CN110595817B - Downhole tool rotation condition simulation platform - Google Patents

Abstract

The invention relates to the technical field of underground drilling precision instrument testing in oil and gas field drilling operation, in particular to a rotary working condition simulation platform of an underground tool. The underground tool simulation device is reasonable and compact in structure and simple to manufacture, the underground tool can simulate underground rotation through the driving mechanism, the underground tool, the slip ring shaft and the test rotating shaft can be fixedly installed together with the axle center through the left installation frame and the right installation frame, the measurement precision is improved, the test cable can smoothly output signals to the processing unit in the test process through the arrangement of the wire passing channel, the processing unit can analyze the signals transmitted by the first output cable and the second output cable, the stability and the reliability of the underground tool during working are ensured, and the drilling operation is safe and reliable.

Description

Downhole tool rotation condition simulation platform

Technical Field

The invention relates to the technical field of underground precision instrument testing while drilling in oil and gas field drilling operation, in particular to a platform for simulating the rotation working condition of an underground tool.

Background

In the field of petroleum drilling and production, the technology of directional wells and horizontal wells is an important technology for improving the crude oil recovery rate and stabilizing the oil field yield, particularly for complex oil and gas reservoirs, the drilling rate and the well track control of the complex oil and gas reservoirs are always main factors for restricting the reduction of the drilling and production cost, the formation information data acquired by an accurate measurement while drilling instrument has a decisive effect on improving the drilling rate and the well track control, and is the guarantee of success or failure of drilling of one well.

Disclosure of Invention

The invention provides a downhole tool rotation working condition simulation platform, overcomes the defects of the prior art, and can effectively solve the problem that a downhole tool simply and clearly completes a simulated downhole rotation test on the ground.

The technical scheme of the invention is realized by the following measures: a rotary working condition simulation platform of an underground tool comprises a test platform, a left mounting rack, a driving shaft, a driving mechanism, a right mounting rack, a connecting mechanism, a via-hole slip ring, an encoder assembly and a processing unit, wherein the left mounting rack and the right mounting rack capable of fixing the underground tool are fixedly arranged on the upper side of the middle part of the test platform at intervals from left to right, the driving shaft is arranged in the left mounting rack, the right end of the driving shaft can be fixedly arranged with the left end of the underground tool, the left end of the driving shaft is in transmission connection with the driving mechanism which is arranged on the left side of the driving shaft and can adjust the rotating speed, the connecting mechanism is arranged in the right mounting rack, the left end of the connecting mechanism can be fixedly arranged with the right end of the underground tool, a first via-line channel which is communicated from left to right is arranged in the center of the left, be equipped with the slip ring axle in the via hole sliding ring, slip ring axle left end is in the same place with connection mechanism right-hand member fixed mounting, slip ring axle left part is equipped with the third wire passing channel, via hole sliding ring left side is equipped with and can loops through the third wire passing channel, first wire passing channel and second wire passing channel back and downhole tool electrical connection's test cable together, via hole sliding ring right side is equipped with can test downhole tool rotational speed, position gamma and nearly bit well inclined processing unit electrical connection's first output cable together, sliding ring axle right side is equipped with the encoder subassembly, be equipped with the test pivot of left end and slip ring axle right-hand member fixed mounting together in the encoder subassembly, encoder subassembly right-hand member is equipped with the second output cable that can be in the same place with processing unit electrical connection.

The following is further optimization or/and improvement of the technical scheme of the invention:

the driving mechanism can comprise a driving motor and a speed regulating device, the upper side of the front end of the test platform corresponding to the left side of the driving shaft is fixedly provided with the driving motor, the right end of the driving motor is provided with an output shaft, the right end of the output shaft is in transmission connection with the left end of the driving shaft through a belt pulley, the rear part of the driving motor is provided with the speed regulating device which is electrically connected with the driving motor, and the lower side of the speed regulating device is arranged together with the upper side of the middle part.

Above-mentioned left mounting bracket can include left axle bed, drive shaft and chuck, test platform left part upper end fixed mounting has left axle bed, install the drive shaft that both ends are located its both sides respectively in the left axle bed, drive shaft right-hand member fixed mounting has the chuck, drive shaft left end outside fixed mounting has driven synchronous pulley, output shaft right-hand member fixed mounting has driving synchronous pulley, driving synchronous pulley and driven synchronous pulley outside are equipped with the hold-in range, the hold-in range is end to end's annular, driving synchronous pulley and driven synchronous pulley's the outside links together with the inboard corresponding position cooperation of hold-in range respectively.

The left mounting frame can further comprise a left limiting nut and a left retaining ring, a left limiting thread is arranged on the outer side of the driving shaft corresponding to the position between the right side of the driven synchronous pulley and the left side of the left shaft seat, the left retaining ring is arranged on the outer side of the driving shaft corresponding to the left position of the left shaft seat, and the left limiting nut is arranged on the outer side of the driving shaft corresponding to the left position of the left retaining ring.

The connecting mechanism can comprise a connecting shaft, a near bit joint and an ejector rod, wherein the right mounting frame is internally and fixedly provided with the connecting shaft, two ends of the connecting shaft are respectively positioned at two sides of the right mounting frame, the center of the connecting shaft is provided with a first connecting hole which is communicated with the left and the right, the inner side of the left end of the connecting shaft is provided with the ejector rod which is fixedly arranged together through threaded connection, the left end of the ejector rod is positioned at the left side of the connecting shaft, the center of the ejector rod is provided with a second connecting hole which is communicated with the left and the right, the left side of the ejector rod is provided with the near bit joint, the center of the right end of the near bit joint is provided with a third connecting hole, the outer side of the right, the second connecting hole and the first connecting hole form a first wire passing channel, and a second wire passing channel communicated with the third connecting hole is arranged on the outer side of the right part of the drill bit joint.

The connecting mechanism can also comprise a pressing plate, a right limiting nut, a right retaining ring and a right fixing nut, wherein the upper part of the near bit joint is provided with a through groove which is communicated from left to right and has an upward opening, the matrix in the through groove is distributed with at least four screw holes, the inside of the through groove is provided with the pressing plate capable of fixing a test cable, the pressing plate corresponding to each screw hole is provided with a connecting hole, the inside of each connecting hole is provided with a fixing bolt with the lower end and the fixing bolt in the screw hole corresponding to the corresponding position, the upper side and the lower side of the left end of the ejector rod are respectively provided with a limiting block, the outer side of the left end of the ejector rod is clamped in a third connecting hole with the same outline as the ejector rod, the right part of the ejector rod is fixedly installed with the left part of the connecting shaft through threaded connection, the outer side of the ejector rod corresponding to the, and a right fixing nut is arranged on the outer side of the connecting shaft corresponding to the right position of the right retaining ring.

The connecting mechanism can also comprise a fixed end cover, the right side of the right mounting frame is fixedly provided with the fixed end cover, the right part of the fixed end cover is provided with a mounting hole which is communicated with the left and the right, the outer side of the middle part of the through hole slip ring is fixedly arranged in the mounting hole, the middle part of the through hole slip ring is provided with a slip ring shaft, the left end and the right end of the slip ring shaft are respectively positioned at the two sides of the slip ring shaft, the left part, a fifth connecting hole which is communicated up and down is arranged in the middle of the slip ring shaft corresponding to the position between the right end of the connecting shaft and the left end of the via hole slip ring, a sixth connecting hole which can form a third wire passing channel with the fifth connecting hole is arranged in the center of the left end of the slip ring shaft, and a test cable which can sequentially pass through the sixth connecting hole, the fifth connecting hole, the first connecting hole, the second connecting hole, the third connecting hole, the second wire passing channel and the wire passing groove and is electrically connected with the underground tool is arranged on the left side of the via hole slip ring.

The encoder component can comprise an encoder, a fixing plate and a coupler, a fixing plate is fixedly mounted on the upper side of the right side of the test platform corresponding to the right position of the fixing end cover, two mounting holes which are communicated in the left and right are formed in the corresponding position of the upper portion of the fixing plate, an encoder is mounted in the two mounting holes, a test rotating shaft with the left end located on the left of the fixing plate is arranged in the encoder, the left of the test rotating shaft is connected with the right of the sliding ring shaft through a coupler, and a second output cable which can be electrically connected with a processing unit is arranged.

The device also comprises a base, support columns, support nuts and support assemblies, wherein the test platform is rectangular, four corners of the test platform are respectively provided with a fixing hole which is communicated from top to bottom, each fixing hole is internally provided with a support column, the lower end of the support column is fixedly arranged with the corresponding position of the upper end of the base below the test platform, the upper side of the test platform corresponding to the position of each fixing hole is provided with the support nut which is arranged with the support column corresponding to the corresponding position, at least two support assemblies are arranged on the test platform corresponding to the position between the driving shaft and the right mounting rack at intervals from left to right, each support assembly comprises a riding wheel support, a connecting bolt, an adjusting screw and a connecting table, at least two connecting tables are arranged on the lower side of the test platform corresponding to the position between the driving shaft and the right mounting rack at intervals from left to right, the middle part of each connecting table is provided with a, the connecting bolts capable of fixedly mounting the connecting table and the test platform together are arranged in each long circular hole, at least two adjusting holes which are communicated up and down are arranged at the left and right sides of the upper end of the test platform corresponding to the position between the long circular holes at intervals, a riding wheel support capable of moving up and down in each adjusting hole is arranged in each adjusting hole, each connecting table is provided with a threaded hole which is communicated up and down, and an adjusting screw rod with the upper end mounted together with the center of the lower end of the riding wheel support is arranged in each threaded hole.

The underground tool simulation device is reasonable and compact in structure and simple to manufacture, the underground tool can simulate underground rotation through the driving mechanism, the left mounting frame and the right mounting frame can fixedly mount the underground tool, the slip ring shaft and the test rotating shaft together with the same axis, the measurement precision is improved, the test cable can smoothly output signals to the processing unit in the test process through the arrangement of the first wire passing channel, the second wire passing channel and the third wire passing channel, the processing unit can analyze the signals transmitted by the first output cable and the second output cable, the stability and the reliability of the underground tool during working are ensured, and the drilling operation is safe and reliable.

Drawings

FIG. 1 is a schematic sectional view of the preferred embodiment of the present invention.

Fig. 2 is a schematic top view of the structure of fig. 1.

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2.

Fig. 4 is a block diagram of the circuit configuration of fig. 1.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 1.

The codes in the figures are respectively: 1 is a test platform, 2 is a driving shaft, 3 is a first output cable, 4 is a second output cable, 5 is a test cable, 6 is an output shaft, 7 is a speed adjusting device, 8 is a left shaft seat, 9 is a chuck, 10 is a driving motor, 11 is a left limit nut, 12 is a left check ring, 13 is a connecting shaft, 14 is a first connecting hole, 15 is a right shaft seat, 16 is a near bit joint, 17 is a wire passing groove, 18 is a third connecting hole, 19 is a fourth connecting hole, 20 is a mandril, 21 is a second connecting hole, 22 is a limit block, 23 is a right limit nut, 24 is a right check ring, 25 is a pressure plate, 26 is a right fixing nut, 27 is a fixing end cover, 28 is a slip ring shaft, 29 is a fifth connecting hole, 30 is a sixth connecting hole, 31 is an encoder, 32 is a fixing plate, 33 is a coupler, 34 is a test rotating shaft, 35 is a base, 36 is a support column, 37 is a support nut, 38 is a riding wheel support, 39 is a connecting bolt, 40 is an adjusting screw rod, 41 is a connecting table, 42 is a second wire passing channel, 43 is a via hole slip ring, 44 is a downhole tool, and 45 is a processing unit.

Detailed Description

The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.

In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention is further described with reference to the following examples and figures:

as shown in the attacheddrawings 1, 2, 3 and 5, the underground tool rotation working condition simulation platform comprises a test platform 1, a left mounting frame, adriving shaft 2, a driving mechanism, aright mounting frame 15, a connecting mechanism, a viahole slip ring 43, an encoder assembly and aprocessing unit 45, wherein the left mounting frame and the right mounting frame capable of fixing anunderground tool 44 are fixedly arranged on the upper side of the middle part of the test platform 1 at intervals from left to right, thedriving shaft 2 is arranged in the left mounting frame, the right end of thedriving shaft 2 can be fixedly arranged with the left end of theunderground tool 44, the left end of thedriving shaft 2 is in transmission connection with the driving mechanism which is positioned on the left side of the driving shaft and can adjust the rotating speed, the connecting mechanism is arranged in the right mounting frame, the left end of the connecting mechanism can be fixedly arranged with the right end of theunderground tool 44, a first wire passing channel which is communicated from left to right is arranged, a viahole slip ring 43 is installed on the right side of the right mounting frame, aslip ring shaft 28 is arranged in the viahole slip ring 43, the left end of theslip ring shaft 28 is fixedly installed together with the right end of the connecting mechanism, a third wire passing channel is arranged on the left side of theslip ring shaft 28, a first output cable 3 which can be electrically connected with anunderground tool 44 after passing through the third wire passing channel and the secondwire passing channel 42 is arranged on the left side of the viahole slip ring 43, a first output cable 3 which can be electrically connected with aprocessing unit 45 capable of testing the rotating speed of theunderground tool 44, the azimuth gamma and the near-bit inclination is arranged on the right side of the viahole slip ring 43, an encoder assembly is arranged on the right side of theslip ring shaft 28, atest rotating shaft 34 which is fixedly installed together with the right end of theslip ring shaft 28 is arranged in the encoder assembly, and a second output cable.

According to the requirement, the viahole slip ring 43 may be a known technology, for example, an 12-path 2A miniature via hole slip ring with an inner diameter of 5mm and an outer diameter of 22mm, the via hole slip ring includes a stator, a rotor, a stator outgoing line and a rotor outgoing line, the stator outgoing line is a first output cable 3, the rotor outgoing line is atest cable 5, the encoder component may include anencoder 31 of a known technology, for example, anencoder 31 of a TRD-2E1000B, theencoder 31 is provided with an encoder outgoing line, the encoder outgoing line is asecond output cable 4, and theprocessing unit 45 is a known technology, for example, an industrial control computer capable of operating near-bit test software. In the using process, the connecting mechanism is arranged, thedownhole tool 44 can be reliably fixed and can be connected with thetesting rotating shaft 34 in a transmission way, thedownhole tool 44 can simulate the downhole rotation through the driving mechanism, thedownhole tool 44, theslip ring shaft 28 and thetesting rotating shaft 34 can be fixedly installed together with the same axis through the left mounting rack and the right mounting rack, the measurement precision is improved, the testing cable can be kept static relative to thedownhole tool 44 in the testing process through the arrangement of the first wire passing channel, the secondwire passing channel 42 and the third wire passing channel, the signal is smoothly output to theprocessing unit 45, the rotating speed change condition of thedownhole tool 44 in the rotating process can be accurately detected through the encoder component, and the signals transmitted by the first output cable 3 and thesecond output cable 4 can be analyzed through the arrangement of theprocessing unit 45, the rotation speed, the azimuth gamma and the near-bit well deviation of thedownhole tool 44 are calculated, so that the stability and the reliability of thedownhole tool 44 during working are ensured, and the drilling operation is safe and reliable.

The underground tool rotation working condition simulation platform can be further optimized or/and improved according to actual needs:

as shown in the attacheddrawings 1 and 2, the driving mechanism comprises a driving motor 10 and a speed regulating device 7, the driving motor 10 is fixedly mounted on the upper side of the front end of the test platform 1 corresponding to the left side position of thedriving shaft 2, an output shaft 6 is arranged at the right end of the driving motor 10, the right end of the output shaft 6 is connected with the left end of thedriving shaft 2 through a belt wheel in a transmission manner, the speed regulating device 7 electrically connected with the driving motor 10 is arranged behind the driving motor 10, and the lower side of the speed regulating device 7 is mounted together with the corresponding position of the upper side.

The drive motor 10 may be of a known type, such as a dc motor, and the speed control device 7 may be of a known type, such as a 1HP dc motor speed controller, as required. In the use process, thedownhole tool 44 can rotate at different rotating speeds through the arrangement, the downhole work condition can be simulated, and the reliability of the test work is improved.

As shown in the accompanyingdrawings 1, 2, left side mounting bracket includesleft axle bed 8 and chuck 9, 1 left part upper end fixed mounting of test platform has leftaxle bed 8, installdrive shaft 2 that both ends are located its both sides respectively in theleft axle bed 8, 2 right-hand member fixed mounting of drive shaft havechuck 9, 2 left end outside fixed mounting of drive shaft have driven synchronous pulley, 6 right-hand member fixed mounting of output shaft has driving synchronous pulley, driving synchronous pulley and driven synchronous pulley outside are equipped with the hold-in range, the hold-in range is end to end's annular, driving synchronous pulley and driven synchronous pulley's the outside links together with the inboard corresponding position cooperation of hold-in range respectively.

Theleft axle seat 8 may be a conventional one, such as a vertical double row tapered roller bearing seat. In use, with such an arrangement, thedownhole tool 44 can be mounted coaxially with thedrive shaft 2, improving the accuracy of the test.

As shown in fig. 1 and 2, the left mounting rack further comprises a left limit nut 11 and aleft check ring 12, a left limit thread is arranged on the outer side of thedriving shaft 2 corresponding to the position between the right side of the driven synchronous pulley and the left side of theleft shaft seat 8, theleft check ring 12 is arranged on the outer side of thedriving shaft 2 corresponding to the left position of theleft shaft seat 8, and the left limit nut 11 is arranged on the outer side of thedriving shaft 2 corresponding to the left position of theleft check ring 12.

Theleft retainer 12 may be of a known art, such as a shaft retainer, as desired. In the use, can makedrive shaft 2 andleft axle bed 8 fixed more reliable through such setting, avoid in the test process, axial displacement's the condition appears indrive shaft 2.

As shown in fig. 1, 2 and 5, the connection mechanism includes aconnection shaft 13, anear bit joint 16 and apush rod 20, theright mounting frame 15 is internally and fixedly provided with theconnection shaft 13 with two ends respectively located at two sides thereof, the center of theconnection shaft 13 is provided with afirst connection hole 14 which is through left and right, the inner side of the left end of theconnection shaft 13 is provided with thepush rod 20 which is fixedly installed together through threaded connection, the left end of thepush rod 20 is located at the left side of theconnection shaft 13, the center of thepush rod 20 is provided with asecond connection hole 21 which is through left and right, the left side of thepush rod 20 is provided with thenear bit joint 16, the center of the right end of thenear bit joint 16 is provided with athird connection hole 18, the outer side of the right end of thedownhole tool 44 can be fixedly installed in the fourth connection hole 19, thethird connection hole 18, thesecond connection hole 21 and thefirst connection hole 14 form a first, asecond wire passage 42 communicating with the third connectinghole 18 is provided near the outer side of the right portion of thebit adapter 16.

Theright mounting bracket 15 may be any known technique, such as a vertical double row tapered roller bearing housing, and the right end of thedownhole tool 44 is fixedly secured to the left end of thenear bit joint 16 by a threaded connection. In the use process, the connectingshaft 13 and thedownhole tool 44 can be reliably and fixedly installed together, and the first wire passing channel and the secondwire passing channel 42 are arranged, so that signals of thedownhole tool 44 in the test process can be smoothly transmitted to the viahole slip ring 43 on the right side of theright mounting frame 15 through thetest cable 5, and the structural complexity of the downhole tool testing device is reduced.

As shown in the attacheddrawings 1, 2 and 5, the connecting mechanism further comprises apressing plate 25, a right limitingnut 23, aright retainer ring 24 and aright fixing nut 26, the upper part of thenear bit joint 16 is provided with aline passing groove 17 which is through from left to right and has an upward opening, at least four screw holes are distributed in theline passing groove 17 in a matrix manner, thepressing plate 25 capable of fixing thetest cable 5 is arranged in theline passing groove 17, a connecting hole is arranged on thepressing plate 25 corresponding to each screw hole, a fixing bolt with a lower end and positioned in the screw hole corresponding to the lower end is arranged in each connecting hole, the upper and lower sides of the left end of theejector rod 20 are respectively provided with alimiting block 22, the outer side of the left end of theejector rod 20 is clamped in a third connectinghole 18 with the same contour as the outer side of theejector rod 20, the right part of theejector rod 20 is fixedly installed with the left part of the connectingshaft 13 through threaded connection, the, theright retaining ring 24 with the left side contacting with the right side of theright mounting frame 15 is installed on the outer side of the right part of the connectingshaft 13, and theright fixing nut 26 is installed on the outer side of the connectingshaft 13 corresponding to the right side of theright retaining ring 24.

Theright retainer ring 24 may be of a known type, such as a shaft retainer, as desired. In the use, through setting upline recess 17 andclamp plate 25, can fixtest cable 5 inline recess 17, avoid in the test process,test cable 5breaks test cable 5 along withnear bit joint 16 is rotatory, can guarantee going on smoothly of test work, through setting upright stop nut 23,right fender circle 24 andright fixation nut 26, can make the stable fixed mounting of connectingaxle 13 inboard atright mounting bracket 15, withejector pin 20 stable with connectingaxle 13 fixed mounting together, improve the degree of accuracy of test result.

As shown in fig. 1, 2 and 5, the connecting mechanism further includes a fixedend cap 27, the right side of theright mounting frame 15 is fixedly provided with the fixedend cap 27, the right portion of the fixedend cap 27 is provided with a left-right through mounting hole, the outer side of the middle portion of the through-hole slip ring 43 is fixedly mounted in the mounting hole, the middle portion of the through-hole slip ring 43 is provided with aslip ring shaft 28, the left end and the right end of which are respectively located at two sides of theslip ring shaft 28, the left portion of theslip ring shaft 28 is fixedly mounted with the right portion of the connectingshaft 13 through a threaded connection, the middle portion of theslip ring shaft 28 corresponding to the position between the right end of the connectingshaft 13 and the left end of the through-hole slip ring 43 is provided with a fifth connectinghole 30 capable of forming a third wire passing channel with the fifth connectinghole 29, and the left side of the throughslip ring 43 is, Asecond wire passage 42 and a test cable electrically connected to thedownhole tool 44 behind thewire groove 17.

In the use process, the arrangement ensures that thetest cable 5 is relatively static with thedownhole tool 44, the connectingshaft 13, the near-bit joint 16 and theejector rod 20, so that thetest cable 5 can smoothly input signals to theprocessing unit 45 for calculation.

As shown in fig. 1, 2, 5, the encoder subassembly includesencoder 31,fixed plate 32 andshaft coupling 33, 1 upper side fixed mounting of the test platform right side that corresponds the right-hand position of fixedend cover 27 has fixedplate 32, two holes of the installation that link up aboutfixed plate 32 upper portion corresponds the position and is equipped with, installencoder 31 in two holes of the installation, be equipped with thetest pivot 34 that the left end is located thefixed plate 32 left side inencoder 31, thetest pivot 34 left part links together throughshaft coupling 33 with theslip ring axle 28 right part,encoder 31 right-hand member downside is equipped with can be connected togethersecond output cable 4 withprocessing unit 45 electricity.

In the use process, by the arrangement, theencoder 31 can be effectively protected in the test process, the service life of the invention is prolonged, and the use cost is reduced.

As shown in the attached figures 1, 2 and 3, the testing device further comprises abase 35, supportingcolumns 36, supportingnuts 37 and bracket assemblies, wherein the testing platform 1 is rectangular, four corners of the testing platform 1 are respectively provided with a fixing hole which is through from top to bottom, each fixing hole is internally provided with a supportingcolumn 36, the lower end of each supporting column is fixedly installed with the upper end of thebase 35 which is positioned below the testing platform 1, the upper side of the testing platform 1 which corresponds to the position of each fixing hole is provided with a supportingnut 37 which is installed with the supportingcolumn 36 which corresponds to the position, at least two bracket assemblies are arranged on the testing platform 1 which corresponds to the position between thedriving shaft 2 and theright mounting rack 15 at intervals from left to right, each bracket assembly comprises ariding wheel bracket 38, a connectingbolt 39, an adjustingscrew 40 and a connecting table 41, at least two connecting tables 41 are arranged on the lower side of the testing platform 1 which corresponds to the, the test platform 1 corresponding to the front side and the rear side of each connectingplatform 41 is provided with the long round holes, the connectingplatforms 41 can move left and right along the long round holes, each long round hole is internally provided with a connectingbolt 39 capable of fixedly mounting theconnecting platforms 41 and the test platform 1 together, the upper end of the test platform 1 corresponding to the position between the long round holes is provided with at least two adjusting holes which are communicated up and down at intervals, each adjusting hole is internally provided with ariding wheel support 38 capable of moving up and down on the inner side of the riding wheel support, each connectingplatform 41 is provided with threaded holes which are communicated up and down, and each threaded hole is internally provided with an adjustingscrew 40 of which the upper end is mounted with the center of the.

The tug bracket, adjusting bolt and connecting table 41 can constitute, as required, a technique known in the art, such as a roller-type mechanical payoff stand. In the use process, the coaxiality of thedriving shaft 2, thedownhole tool 44, thenear bit joint 16, theejector rod 20, the connectingshaft 13, theslip ring shaft 28 and thetest rotating shaft 34 in the test process can be ensured through the arrangement, the accuracy of the test result is improved, and the service life of the invention can also be prolonged.

The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.

Claims (8)

1. A rotary working condition simulation platform of an underground tool is characterized by comprising a test platform, a left mounting frame, a driving shaft, a driving mechanism, a right mounting frame, a connecting mechanism, a via sliding ring, an encoder assembly and a processing unit, wherein the left mounting frame and the right mounting frame which can fix the underground tool are fixedly arranged on the upper side of the middle part of the test platform at intervals from left to right, the driving shaft is arranged in the left mounting frame, the right end of the driving shaft can be fixedly arranged with the left end of the underground tool, the left end of the driving shaft is connected with the driving mechanism which is arranged on the left side of the driving shaft and can adjust the rotating speed in a transmission way, the connecting mechanism is arranged in the right mounting frame, the left end of the connecting mechanism can be fixedly arranged with the right end of the underground tool, a first line passing channel which is communicated from left to right is arranged in the center of the left end, a slip ring shaft is arranged in the via hole slip ring, the left end of the slip ring shaft is fixedly arranged with the right end of the connecting mechanism, the left part of the slip ring shaft is provided with a third wire passing channel, the left side of the via hole slip ring is provided with a test cable which can be electrically connected with a downhole tool after passing through the third wire passing channel, the first wire passing channel and the second wire passing channel in sequence, the right side of the via hole slip ring is provided with a first output cable which can be electrically connected with a processing unit capable of testing the rotating speed, the azimuth gamma and the near bit inclination of the downhole tool, the right side of the slip ring shaft is provided with an encoder assembly, a test rotating shaft is arranged in the encoder assembly, the left end of the encoder assembly is fixedly arranged with the right end of the slip ring shaft, the right end of the encoder assembly is provided with a second output cable which can be electrically connected with the processing unit, the, the connecting shaft center is provided with a first connecting hole which is communicated with the left and right, the inner side of the left end of the connecting shaft is provided with an ejector rod which is fixedly installed together through threaded connection, the left end of the ejector rod is positioned at the left side of the connecting shaft, the center of the ejector rod is provided with a second connecting hole which is communicated with the left and right, the left side of the ejector rod is provided with a near bit joint, the center of the right end of the near bit joint is provided with a third connecting hole, the outer side of the left end of the ejector rod is fixedly installed in the third connecting hole, the center of the left end of the near bit joint is provided with a fourth connecting hole communicated with the third connecting hole, the outer side of the right end of the downhole tool can be fixedly installed in the fourth connecting hole, the third.

2. The downhole tool rotating condition simulation platform according to claim 1, wherein the driving mechanism comprises a driving motor and a speed regulating device, the driving motor is fixedly mounted on the upper side of the front end of the test platform corresponding to the left side of the driving shaft, an output shaft is arranged at the right end of the driving motor, the right end of the output shaft is in transmission connection with the left end of the driving shaft through a belt pulley, the speed regulating device electrically connected with the driving motor is arranged behind the driving motor, and the lower side of the speed regulating device is mounted with the corresponding position of the upper side of the middle part of the test platform.

3. The downhole tool rotation condition simulation platform according to claim 2, wherein the left mounting frame comprises a left shaft seat, a driving shaft and a chuck, the left shaft seat is fixedly mounted at the upper end of the left portion of the test platform, the driving shaft with two ends respectively located at two sides of the left shaft seat is mounted in the left shaft seat, the chuck is fixedly mounted at the right end of the driving shaft, a driven synchronous pulley is fixedly mounted at the outer side of the left end of the driving shaft, a driving synchronous pulley is fixedly mounted at the right end of the output shaft, synchronous belts are arranged at the outer sides of the driving synchronous pulley and the driven synchronous pulley, the synchronous belts are in an annular shape with the end to end, and the outer sides of the.

4. The downhole tool rotation condition simulation platform according to claim 3, wherein the left mounting bracket further comprises a left limit nut and a left check ring, a left limit thread is arranged on the outer side of the driving shaft corresponding to a position between the right side of the driven synchronous pulley and the left side of the left shaft seat, the left check ring is arranged on the outer side of the driving shaft corresponding to the left side of the left shaft seat, and the left limit nut is arranged on the outer side of the driving shaft corresponding to the left side of the left check ring.

5. The downhole tool rotation condition simulation platform according to claim 1, wherein the connection mechanism further comprises a pressing plate, a right limiting nut, a right retainer ring and a right fixing nut, the upper portion of the drill bit joint is provided with a line passing groove which is communicated from left to right and has an upward opening, at least four screw holes are distributed in the line passing groove in a matrix manner, the line passing groove is internally provided with a pressing plate capable of fixing a test cable, the pressing plate corresponding to each screw hole is provided with a connection hole, each connection hole is internally provided with a fixing bolt having a lower end and being positioned in the screw hole corresponding to the lower end, the upper and lower sides of the left end of the ejector rod are respectively provided with a limiting block, the outer side of the left end of the ejector rod is clamped in a third connection hole having a contour identical with that of the ejector rod, the right portion of the ejector rod is fixedly installed together with the left portion of the connection shaft through threaded connection, the right retaining ring with the left side contacting with the right side of the right mounting frame is installed on the outer side of the right portion of the connecting shaft, and a right fixing nut is installed on the outer side of the connecting shaft corresponding to the right position of the right retaining ring.

6. The downhole tool rotation condition simulation platform according to claim 5, wherein the connection mechanism further comprises a fixed end cap, the right side of the right mounting frame is fixedly provided with the fixed end cap, the right part of the fixed end cap is provided with a through hole, the outer side of the middle part of the through hole slip ring is fixedly arranged in the through hole, the middle part of the through hole slip ring is provided with a slip ring shaft, the left end and the right end of the slip ring shaft are respectively arranged at two sides of the slip ring shaft, the left part of the slip ring shaft is fixedly arranged with the right part of the connecting shaft through a threaded connection, the middle part of the slip ring shaft corresponding to the position between the right end of the connecting shaft and the left end of the through hole slip ring is provided with a through hole, the through hole slip ring shaft is provided with a sixth connection hole, the slip ring can sequentially pass through the sixth connection hole, the fifth connection hole, And the second wire passing channel and the test cable are electrically connected with the downhole tool after passing the wire groove.

7. The downhole tool rotating working condition simulation platform according to claim 6, wherein the encoder assembly comprises an encoder, a fixed plate and a coupler, the fixed plate is fixedly mounted on the upper side of the right portion of the test platform corresponding to the right position of the fixed end cover, the two mounting holes which are communicated left and right are formed in the corresponding position of the upper portion of the fixed plate, the encoder is mounted in the two mounting holes, a test rotating shaft is arranged in the encoder, the left end of the test rotating shaft is located on the left side of the fixed plate, the left portion of the test rotating shaft is connected with the right portion of the slip ring shaft through the coupler, and a second output cable which can be electrically connected with.

8. The downhole tool rotating condition simulation platform according to claim 1, 2, 3, 4, 5, 6, or 7, further comprising a base, support columns, support nuts, and support assemblies, wherein the test platform is rectangular, four corners of the test platform are provided with fixing holes which are vertically communicated, each fixing hole is internally provided with a support column, the lower end of each support column is fixedly installed with the upper end of the base below the test platform at a position corresponding to the upper end of the test platform, the upper side of the test platform corresponding to each fixing hole is provided with a support nut installed with the support column at a corresponding position, at least two support assemblies are arranged on the test platform corresponding to the position between the driving shaft and the right mounting rack at intervals from left to right, each support assembly comprises a riding wheel support, a connecting bolt, an adjusting screw and a connecting table, at least two connecting tables are arranged at intervals from left to right on the lower, every connects the platform middle part all to be equipped with about link up and the ascending recess of opening, it can follow its slotted hole that removes to correspond all to be equipped with on the test platform of every connection platform front and back both sides position, all be equipped with the connecting bolt that can be in the same place with connection platform and test platform fixed mounting in every slotted hole, the interval is equipped with two at least regulation holes that link up from top to bottom about the test platform upper end that corresponds position between the slotted hole, all be equipped with the riding wheel support that can reciprocate in its inboard in every regulation hole, the screw hole that link up from top to bottom all is equipped with on every connection platform, every threaded hole is equipped with upper end and riding wheel support lower extreme central authorities and installs adjusting screw together.

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