A kind of telescopic adjustment pipe and the water mixing tubing string with the telescopic adjustment pipeTechnical field
The present invention relates to water mixing recover the oil technical field, more particularly to a kind of telescopic adjustment pipe and have the telescopic adjustment pipeWater mixing tubing string.
Background technology
High solidifying oil makes production fluid along journey heat loss because with higher paraffin content, freezing point is high in exploitation lifting processTemperature constantly declines, and high solidifying oil cooling is solidifying to increase sharply, and flow resistance increase cannot even be flowed, the high solidifying oil generally before well head is reachedJust solidify, after solidification, high solidifying oil does not just flow, and causes sucker rod also move up and down, causes Ka Jing.In actual productionIn, it is necessary to by making pit shaft liquid temperature exceed after freezing point above uniform temperature along Cheng Jiare, oil recovery can be lifted.
Solidifying oil high at present has two kinds of heating recovery methods：1st, hollow stem cable hot line heating pour-point depressing method on pump；2nd, electric heatingOil tube heating viscosity reducing process, both the above method are respectively provided with high energy consumption, invest big shortcoming.Exploited using method 1, average individual wellDay 849 kilowatt hour of power consumption, individual well invest 18.95 ten thousand yuan；740 kilowatt hour of average optimization is exploited using method 2, individual well is thrownProvide 11.6 ten thousand yuan.Therefore, high energy consumption is substantially increased cost for oil production, seriously constrains the high exploitation benefit for coagulating oil.
During the Job Operations of production scene, need to be equipped with water mixing tubing string, injected toward pit shaft by water mixing tubing stringHot water, enables sucker rod heat tracing to produce, it is to avoid condensation.The cumulative water-oil ratio of sucker rod can also be increased, crude oil forms oil-in-water, reducesThe molecule contacts ability of crude oil.After entering down the water mixing tubing string parallel with sucker rod in the wellbore, due to the length of water mixing tubing stringCannot be equipped with accurately, the upper orifice of usual water mixing tubing string is difficult just to be fitted on well head, it is necessary to using the mode such as electrically cutting, will be unnecessaryWater mixing tubing string slice off, then on the water mixing tubing string for cutting off weld a box cupling, water-blending flange device could be installed, on well siteThis operating process is very dangerous, has had a strong impact on the spread of water mixing technique.
The content of the invention
Can not easily be adjusted to solve tubing string height and position, by water mixing tubing string being cut to adjust its length, graspMake unsafe technical problem, the present invention proposes a kind of telescopic adjustment pipe and the water mixing tubing string with the telescopic adjustment pipe, can be withThe length of telescopic adjustment pipe is conveniently adjusted, the upper end of telescopic adjustment pipe adapts to the height of the tool tubular column in the external world.Water mixing pipePost avoids and its upper end is cut, and is suitable for the water-blending flange device of well head by center of rotation pipe, makes double-barreled water addingDP technology technology is able to spread.
The present invention proposes a kind of telescopic adjustment pipe, and the telescopic adjustment pipe includes telescopic component and outer jacket member；
The telescopic component includes central canal, the sleeve pipe being set on the outside of the central canal and is connected on the central canalThe upper box cupling at end；External screw thread is set on the outer wall of the central canal, and arranging on the inwall of described sleeve pipe can be with the external screw thread phaseThe female thread of engagement；First through hole is set on the upper box cupling, and the lower end of first through hole is upper with the central canalOpen communication；
The outer jacket member includes outer tube, lower outer tube, lower pipe nipple and at least one sealing ring, the upper outer tube and describedLower outer tube is spaced and is set on the outside of the central canal；Each sealing ring is successively set on the interior of the upper outer tube from top to bottomBetween the outer wall of the upper end of wall and the central canal, the lower end of the upper outer tube is sealedly connected on the upper end of described sleeve pipe；It is describedThe upper end of lower outer tube is sealedly connected on the lower end of described sleeve pipe, and the upper end of the lower pipe nipple is sealedly connected under the lower outer tubeEnd；Second through hole is set on the lower pipe nipple, and the upper end of second through hole is connected with the under shed of the lower outer tube；
The upper outer tube is stretched out in the upper end of the central canal, and the lower end of the central canal is located at the inner chamber of the outer jacket memberIn；Screw upwards and downward screw by the external screw thread in the female thread, the upper end of the central canalThe inner chamber with outer jacket member described in downward indentation is protruded upward respectively.
Further, the external screw thread is arranged on the middle part of the central canal；
The telescopic component also includes a baffle ring, and the baffle ring is sleeved on the bottom of the central canal, outside the baffle ringInternal diameter of the footpath more than described sleeve pipe；Synchronously moved upwards by the drive baffle ring that protrudes upward of the central canal, until instituteBaffle ring block is stated on the lower surface of described sleeve pipe.
Further, described sleeve pipe includes that the first segmentation and second being sequentially connected from top to bottom is segmented, described first pointInternal diameter of the internal diameter of section more than the described second segmentation, the female thread are arranged on the inwall of second segmentation；
The block shaft shoulder is set on the outer wall of the central canal, and the block shaft shoulder is located at the externally threaded top, passes throughThe block shaft shoulder described in the downward indentation of the central canal is resisted against on the upper surface of second segmentation.
Further, the upper end of the inwall of the upper outer tube arranges first shaft shoulder, and the sealing ring sealing-plug is loaded on describedBetween the outer wall of first shaft shoulder and the central canal；
Gland of the outer jacket member also including ring-type, the gland are sleeved on the outside of the central canal, the glandOuter wall and the inwall of first shaft shoulder between be threaded connection；The bottom of the gland is placed in first shaft shoulder,And the lower surface of the gland is acted against on the upper surface of the sealing ring of the top.
Further, the inwall of the upper outer tube lower end arrange second shaft shoulder, the inwall of second shaft shoulder with it is describedThe upper end of the outer wall of sleeve pipe is threaded connection；
The upper end of the inwall of the lower outer tube arranges the 3rd shaft shoulder, the inwall of the 3rd shaft shoulder and the outer wall of described sleeve pipeLower end be threaded connection.
Used as a kind of enforceable mode, the upper end of the outer wall of the lower pipe nipple passes through tapered thread and the lower outer tubeThe lower end connection of inwall.
Used as a kind of enforceable mode, the external screw thread and the female thread are rectangular thread.
The present invention also proposes a kind of water mixing tubing string, and the water mixing tubing string includes the telescopic adjustment pipe being sequentially connected from top to bottomAnd water injection pipe, the telescopic adjustment pipe is above-mentioned telescopic adjustment pipe, and the lower end of the water injection pipe is mixed with the two-tube of down-hole is placed inWater installations connect, and the height of the upper end of the central canal is adjusted by the stretching motion up and down of central canal, until the first through holeUpper shed can be connected with the water-blending flange device for being placed in well head.
Further, the part that the upper outer tube is stretched out on the central canal is located at the top of the well head.
Further, the lower end of the outer wall of lower pipe nipple is connected with the upper end of the water injection pipe by tapered thread.
The present invention compared to the beneficial effect of prior art is：The telescopic adjustment pipe of the present invention is relative by central canalIn the screw of sleeve pipe, the length of telescopic adjustment pipe can be adjusted, so as to the height of the upper shed of the first through hole is adjusted flexiblyPosition, is made telescopic adjustment pipe adapt to the height of the tool tubular column in the external world, and is easily connected with tool tubular column by upper box cuplingConnect.
The present invention is provided with baffle ring and the block shaft shoulder, and baffle ring limits the stroke that central canal is moved upwards, it is to avoid central canalWhen moving excessive upwards, external screw thread departs from from the upper end of female thread；The block shaft shoulder limits the stroke that central canal is moved downward, and keeps awayWhen exempting from central canal and moving downward excessive, external screw thread departs from from the lower end of female thread, it is ensured that continue between external screw thread and female thread,Reliable screw thread coordinates.In addition, by arranging the shaft shoulder, make the external diameter of the telescopic adjustment pipe of the present invention unanimous between the higher and lower levels, profile rule.
The water mixing tubing string of the present invention, in double-barreled water adding DP technology operation completion, as telescopic adjustment pipe can be convenientlyGround adjustment length, is suitable for the water-blending flange device of well head by center of rotation pipe, it is to avoid need using electrically cutting, electricallyThe uneasy full operation such as weldering, it is not necessary to the upper end of water mixing tubing string is cut, makes double-barreled water adding DP technology technology be able to large areaPromote.
Description of the drawings
Fig. 1 is the schematic front view of the telescopic adjustment pipe of the present invention；
Fig. 2 is the half-section diagram of the sleeve pipe of the telescopic adjustment pipe of the present invention；
Fig. 3 is the half-section diagram of the upper outer tube of the telescopic adjustment pipe of the present invention；
Fig. 4 is the schematic front view of the water mixing tubing string of the present invention.
Reference：
1- telescopic adjustment pipes；
10- central canals；The 12- block shaft shoulders；
20- sleeve pipes；22- first is segmented；24- second is segmented；
The upper box cuplings of 30-；40- baffle rings；
The upper outer tube of 50-；First shaft shoulders of 52-；Second shaft shoulders of 54-；
Outer tube under 60-；Pipe nipple under 70-；
80- sealing rings；90- glands；
2- water injection pipes；3- double-barreled water adding devices；4- water-blending flange devices.
Specific embodiment
Below in conjunction with accompanying drawing, above-mentioned technical characteristic of the invention and advantage are clearly and completely described, it is clear that instituteThe embodiment of description section Example only of the invention, rather than whole embodiments.
Refer to shown in Fig. 1, the present invention proposes a kind of telescopic adjustment pipe 1, telescopic adjustment pipe 1 includes telescopic component and overcoatComponent.Telescopic component includes central canal 10, sleeve pipe 20 and upper box cupling 30, and sleeve pipe 20 is set on the outside of central canal 10, upper box cupling 30It is connected to the upper end of central canal 10.External screw thread is set on the outer wall of central canal 10, energy and external screw thread are set on the inwall of sleeve pipe 20The female thread being meshed；First through hole is set on upper box cupling 30, and the lower end of the first through hole is connected with the upper shed of central canal 10It is logical.
Outer jacket member includes outer tube 50, lower outer tube 60, lower pipe nipple 70 and at least one sealing ring 80, and upper outer tube 50 is withOuter tube 60 is spaced and is set on the outside of central canal 10.Each sealing ring 80 is successively set on the upper of the inwall of outer tube 50 from top to bottomBetween end and the outer wall of central canal 10, the lower end of upper outer tube 50 is sealedly connected on the upper end of sleeve pipe 20.The upper end of lower outer tube 60 is closeEnvelope is connected to the lower end of sleeve pipe 20, and the upper end of lower pipe nipple 70 is sealedly connected on the lower end of lower outer tube 60；Is arranged on lower pipe nipple 70Two through holes, the upper end of the second through hole are connected with the under shed of lower outer tube 60.
Outer tube 50 is stretched out in the upper end of central canal 10, and the lower end of central canal 10 is located in the inner chamber of outer jacket member；By outerUpwards screw and downward screw of the screw thread in female thread, the upper end of central canal 10 are protruded upward respectively and are contracted downwardsEnter the inner chamber of outer jacket member.
In the present embodiment, during central canal 10 is relative to the up and down motion of sleeve pipe 20, the lower end of central canal 10 is all the timeIn the inner chamber of lower outer tube 60；During 10 downward indentation of central canal, the upper end of central canal 10 is always positioned at the inner chamber of outer tube 50In.First through hole, the inner chamber of central canal 10, lower outer tube 60 are sequentially communicated from top to bottom with the second through hole, form circulationRoad.More preferably, sealing ring 80 is soft sealing material, prevents the liquid in flow channels between upper outer tube 50 and central canal 10Reveal in gap.
The telescopic adjustment pipe 1 of the present invention, by central canal 10 relative to the screw of sleeve pipe 20, can adjust telescopic adjustmentThe length of pipe 1, so as to the height and position of the upper shed of the first through hole is adjusted flexibly, makes telescopic adjustment pipe 1 adapt to the external worldThe height of tool tubular column, and be easily connected with tool tubular column by upper box cupling 30.
Further, the middle part of the centrally disposed pipe of external screw thread 10；Telescopic component also includes a baffle ring 40, and baffle ring 40 is set withIn the bottom of central canal 10, the external diameter of baffle ring 40 is more than the internal diameter of sleeve pipe 20.Drive baffle ring protruded upward by central canal 1040 synchronously move upwards, until 40 block of baffle ring is on the lower surface of sleeve pipe 20.Central canal 10 is limited upwards by baffle ring 40The stroke of motion, it is to avoid when central canal 10 moves excessive upwards, external screw thread depart from from the upper end of female thread, so as to ensure that outer spiral shellThe lasting cooperation of stricture of vagina and female thread.More preferably, the bottom of 40 centrally disposed pipe 10 of baffle ring.
Further, refer to shown in Fig. 2, sleeve pipe 20 includes the first segmentation 22 being sequentially connected from top to bottom and second pointSection 24, the internal diameter of the first segmentation 22 are segmented 24 internal diameter more than second, that is to say, that the internal diameter of the first segmentation 22 is more than central canal10 external diameter；Female thread is arranged on the inwall of the second segmentation 24.The block shaft shoulder 12, block axle are set on the outer wall of central canal 10Shoulder 12 is located at externally threaded top, is resisted against the upper surface of the second segmentation 24 by the downward indentation block shaft shoulder 12 of central canal 10On.The stroke that central canal 10 is moved downward is limited by the block shaft shoulder 12, it is to avoid when central canal 10 moves downward excessive, outer spiral shellStricture of vagina departs from from the lower end of female thread, so as to ensure that lasting, reliable screw thread coordinates between external screw thread and female thread.
Further, refer to shown in Fig. 3, the upper end of the inwall of upper outer tube 50 arranges first shaft shoulder 52, and sealing ring 80 is closeBlocking is loaded between first shaft shoulder 52 and the outer wall of central canal 10.Gland 90 of the outer jacket member also including ring-type, gland 90 are set withIt is threaded connection between the inwall in the outside of central canal 10, the outer wall of gland 90 and first shaft shoulder 52；The bottom of gland 90It is placed in first shaft shoulder 52, and the lower surface of gland 90 is acted against on the upper surface of sealing ring 80 of the top.
Further, as shown in figure 3, the inwall of upper outer tube 50 lower end arrange second shaft shoulder 54, second shaft shoulder 54 it is interiorWall is threaded connection with the upper end of the outer wall of sleeve pipe 20.The upper end of the inwall of lower outer tube 60 arranges the 3rd shaft shoulder, the 3rd shaft shoulderInwall be threaded connection with the lower end of the outer wall of sleeve pipe 20.By the setting of the above-mentioned shaft shoulder, outer tube 50, sleeve pipe can be made20th, the external diameter of lower outer tube 60 is identical, and the external diameter of the telescopic adjustment pipe 1 of the present invention is unanimous between the higher and lower levels, so that telescopic adjustment pipe 1 is outerShape rule.
Used as a kind of enforceable mode, the upper end of the outer wall of lower pipe nipple 70 passes through the inwall of tapered thread and lower outer tube 60Lower end connection.
Used as a kind of enforceable mode, external screw thread and female thread are rectangular thread, make central canal 10 and sleeve pipe 20 itBetween transmission efficiency it is higher.More preferably, the pitch of rectangular thread can be made larger.
Refer to shown in Fig. 4, the present invention also proposes a kind of water mixing tubing string, and water mixing tubing string includes what is be sequentially connected from top to bottomTelescopic adjustment pipe 1 and water injection pipe 2, the lower end of water injection pipe 2 are connected with the double-barreled water adding device 3 for being placed in down-hole, by central canal 10Stretching motion up and down adjustment central canal 10 upper end height, until the first through hole upper shed can be placed in mixing for well headWater flange apparatus 4 connect.
The water mixing tubing string of the present invention, in double-barreled water adding DP technology operation completion, as telescopic adjustment pipe 1 can be convenientlyGround adjustment length, is suitable for the water-blending flange device 4 of well head by center of rotation pipe 10, it is to avoid need to make in prior artThe uneasiness full operation such as electricity consumption gas cutting, electrogas welding, it is not necessary to the upper end of water mixing tubing string is cut, double-barreled water adding DP technology skill is madeArt is able to spread.
Further, the part that outer tube 50 is stretched out on central canal 10 is located at the top of well head, convenient use instrumental purposeIn central canal 10, so that central canal 10 rotates.
Further, the lower end of the outer wall of lower pipe nipple 70 is connected with the upper end of water injection pipe 2 by tapered thread, makes lower pipe nippleTransmission efficiency between 70 and water injection pipe 2 is higher, such that it is able to rapidly connect.
The use process of the water mixing tubing string of the present invention is as follows：When double-barreled water adding DP technology operation completion, by outer spiral shellStricture of vagina is rotated against with female thread, and the length adjustment by the telescopic adjustment pipe 1 of water mixing tubing string is the state most grown, then by flexible tune1 time the top to water injection pipe 2 of section pipe, it is ensured that the upper end of telescopic adjustment pipe 1 is higher by well head.
Then turned clockwise the part for adjusting that central canal 10 stretches out upper outer tube 50 with pipe wrench, due to the outer spiral shell of central canal 10The interaction of the female thread of stricture of vagina and sleeve pipe 20, and lower pipe nipple 70 is connected to the upper end of water injection pipe 2, lower pipe nipple 70, lower outer tube60 and sleeve pipe 20 be sequentially connected from top to bottom, fix the position of sleeve pipe 20.Turn clockwise central canal 10, and central canal 10 is relativeDecline in 20 spiral of sleeve pipe, until upper box cupling 30 drops to the height of requirement, the water-blending flange device 4 that can install well head isOnly.
Particular embodiments described above, has been carried out further to the purpose of the present invention, technical scheme and beneficial effectDescribe in detail, it will be appreciated that the foregoing is only the specific embodiment of the present invention, the protection being not intended to limit the present inventionScope.Particularly point out, to those skilled in the art, it is all within the spirit and principles in the present invention, done any repairChange, equivalent, improvement etc., should be included within the scope of the present invention.