The content of the invention
It is an object of the invention to provide a kind of chute type sub-releasing axle plug, solve hanging capacity present in current bridging plug it is low,Give up in advance and give up pressure problem high.
The present invention is achieved through the following technical solutions：A kind of chute type sub-releasing axle plug, including top connection, connector, onCentral tube, fishing head, jump ring, seating nipple, upper joint sleeve, deblocking pin, give up, sliding pin, set piston, closing piece one, sitOffset nail, closing piece two, upper glue tube base, exterior central tube, lower center tube, packing element, spacer ring, lower rubber cylinder seat, upper centrum, sheath, rightingSlips, spring, hypocentrum, standby cap, lower contact, wherein, top connection is connected with connector, and connector is connected to the upper of upper center tubeEnd, the upper end junction of top connection, connector and upper center tube is sealed by O-ring；The lower end of upper center tube and lower center tubeUpper end is fixedly connected by sliding pin with closing piece one, and pressure transmission hole is provided with lower center tube, and screwed connection is leaned in lower end with lower contact；BeatHead is dragged in the outside of upper center tube, on lower end is connected to by deblocking pin and gives up, outside the interior button given up and the top of lower center tubeThere is spring arm on button connection, the top given up, there is screw thread outside spring arm, and the outer button given up on spring arm connects with the interior button of seating nippleConnect, while leaning on fishing head lower support, fixed by deblocking pin；There is pawl the outside of seating nipple, and the outside of seating nipple is upper companyFemale connector, there is a jump ring between seating nipple and upper joint sleeve, jump ring can mutually be engaged with the pawl outside seating nipple, the bottom of upper joint sleeve andUpper glue tube base screwed connection, upper glue tube base is fixed on lower center tube by closing piece two, seating nipple, give up, upper glue tube base and upper companyFemale connector forms a cavity, inside sets piston, sets piston and is fixed on upper glue tube base by setting pin, while fettering closing pieceOne and closing piece two, the outside of lower center tube is exterior central tube, exterior central tube and upper glue tube base screwed connection；In the outer of exterior central tubeThere are three packing elements and two spacer rings between portion, upper glue tube base and lower rubber cylinder seat；Lower rubber cylinder seat leans on screwed connection, upper vertebra with upper centrumThere is righting slips between body, hypocentrum and sheath, there is spring on righting slips, hypocentrum is connected with lower center tube, sheathBottom connects standby cap, lower contact outer step constraint standby cap and sheath；Slideway long is provided with described upper center tube bottom outer wallWith short slideway, short slideway is obliquely installed and V-type connected into slideway long, and upper center tube bottom is directly run through in slideway bottom long, slidingIn the short slideway that dynamic dowel ends are placed in slideway long and short slideway, and can be slided in slideway long and short slideway.
Further, described slideway long and short slideway are multigroup, respectively along the circumferential uniform arrangement of upper center tube outer wall.
Further, described slideway long and short slideway are three groups.
Further, described hypocentrum is connected with lower center tube by left-hand thread, while locked by safety pin.
Using the good effect of above-mentioned technical proposal：The present invention avoids high pressure or big load above carries cutting pin and given upThe drawbacks of, using the suspension of big load fixing pin, the principle given up without power ramp, it is ensured that release grappling in place, prevents to carryBefore give up, improve water blockoff and shut-in well efficiency, it is to avoid unnecessary waste.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is structural representation of the invention two；
Fig. 3 is the structural representation of upper center tube；
Fig. 4 be in Fig. 3 A-A to sectional elevation；
Fig. 5 is the outer wall tiling schematic diagram of upper center tube.
In figure, 1 top connection, 2 connectors, 3 upper center tubes, 4 fishing heads, 5 jump rings, 6 seating nipples, 7 upper joint sleeves, 8 deblockingsPin, 9 give up, 10 sliding pins, and 11 set piston, 12 closing pieces one, and 13 set pin, 14 closing pieces two, glue tube base on 15, outside 16Central tube, 17 lower center tubes, 18 packing elements, 19 spacer rings, 20 lower rubber cylinders seat, centrum on 21,22 sheaths, 23 righting slips, 24 springs,25 hypocentrums, 26 standby caps, 27 lower contacts, 28 slideways long, 29 short slideways, 30 safety pins.
Specific embodiment
Technical scheme is described further below in conjunction with the accompanying drawings, but be should not be construed as to limit of the inventionSystem：
Fig. 1 is structural representation of the invention, and Fig. 2 is structural representation of the invention two, Fig. 3 Shi Tu1Zhong Shang centersThe structural representation of pipe, Fig. 4 be in Fig. 3 A-A to sectional elevation, Fig. 5 is the outer wall tiling schematic diagram of upper center tube, such as schemes instituteShow, a kind of chute type sub-releasing axle plug, including top connection 1, connector 2, upper center tube 3, fishing head 4, jump ring 5, seating nipple 6, onAdapter sleeve 7, deblocking pin 8,9, sliding pin 10 of giving up, set piston 11, closing piece 1, set pin 13, closing piece 2 14, onGlue tube base 15, exterior central tube 16, lower center tube 17, packing element 18, spacer ring 19, lower rubber cylinder seat 20, upper centrum 21, sheath 22, rightingSlips 23, spring 24, hypocentrum 25, standby cap 26, lower contact 27, wherein, top connection 1 is connected with connector 2, and connector 2 is connectedIn the upper end of upper center tube 3, the upper end junction of top connection 1, connector 2 and upper center tube 3 is sealed by O-ring.Upper center tube 3The upper end of lower end and lower center tube 17 be fixedly connected by sliding pin 10 and closing piece 1, be provided with pressure transmission on lower center tube 17Screwed connection is leaned in hole, lower end with lower contact 27.In the outside of upper center tube 3, lower end is connected to by deblocking pin 8 loses fishing head 4On hand 9, the 9 interior button of giving up is connected with being detained outside the top of lower center tube 17, and spring arm is arranged at 9 top of giving up, and has silk outside spring armButton, the outer button given up on 9 spring arms is connected with the interior button of seating nipple 6, while leaning on the lower support of fishing head 4, consolidates by deblocking pin 8It is fixed.There is pawl the outside of seating nipple 6, and the outside of seating nipple 6 is upper joint sleeve 7, there is jump ring 5 between seating nipple 6 and upper joint sleeve 7,Jump ring 5 can mutually be engaged with the pawl outside seating nipple 6, the bottom of upper joint sleeve 7 and the screwed connection of upper glue tube base 15, upper glue tube base15 are fixed on lower center tube 17 by closing piece 2 14, seating nipple 6, give up 9, upper glue tube base 15 and one sky of formation of upper joint sleeve 7Chamber, inside sets piston 11, sets piston 11 and is fixed on upper glue tube base 15 by setting pin 13, while fettering the He of closing piece 1Closing piece 2 14, the outside of lower center tube 17 is exterior central tube 16, exterior central tube 16 and the screwed connection of upper glue tube base 15.At outer centerThere are three packing elements 18 and two spacer rings 19 between outside, upper glue tube base 15 and the lower rubber cylinder seat 20 of pipe 16.Lower rubber cylinder seat 20 with it is upperCentrum 21 leans on screwed connection, there is righting slips 23 between upper centrum 21, hypocentrum 25 and sheath 22, has spring on righting slips 2324, hypocentrum 25 is connected with lower center tube 17, the bottom connection standby cap 26 of sheath 22, the outer step of lower contact 27 constraint standby cap26 and sheath 22.Be provided with slideway long 28 and short slideway 29 on the described bottom outer wall of upper center tube 3, short slideway 29 be obliquely installed andV-type is connected into slideway long 28, the bottom of upper center tube 3 is directly run through in the bottom of slideway long 28, and the end of sliding pin 10 is placed in cunning longIn short slideway 29 in road 28 and short slideway 29, and can be slided in slideway long 28 and short slideway 29.The present invention changes existingHave sub-releasing axle plug needs to cut the mode of pin, the short slideway that sliding pin is placed in slideway long and short slideway when giving upIt is interior, realize giving up in the conversion of slideway by sliding pin, avoid high pressure or big load is above carried and cuts the disadvantage that pin is given upEnd.
Further, in order that the used time more facilitates, described slideway long 28 and short slideway 29 are multigroup, respectively along upperThe circumferential uniform arrangement of the outer wall of central tube 3.Specifically, described slideway long 28 and short slideway 29 are three groups.
In order to prevent from giving up unsuccessfully, it is impossible to which the situation for acting bridging plug occurs, and described hypocentrum 25 is leaned on lower center tube 17Left-hand thread is connected, while locked by safety pin 30.When lower center tube is rotated forward, safety pin can be cut, by hypocentrum and it is lower inHeart pipe falls out, unfreezing.
When chute type sub-releasing axle plug is gone into the well, top connection 1 is connected to 27/8〃On oil pipe pin thread, lower contact 27 connects other undergroundsInstrument, under to projected depth in well, just suppressed from oil pipe, under the effect of the pressure, liquid enters from the pressure transmission hole of lower center tube 17Enter, it is up that promotion sets piston 11, cutting sets pin 13, under pressure, while upper glue tube base 15 is descending, closing piece two14 upspring；Now closing piece 1 also loses constraint and upsprings, and the suspending weight that pressure and the instrument are born all falls on sliding pin 10；Upper glue tube base 15 is continued traveling downwardly, and promotes the packing element 18, two of exterior central tube 16, three spacer ring 19, lower rubber cylinder seat 20 and upper centrum 21Simultaneously descending, in the presence of thrust, the conical surface of upper centrum 21 and hypocentrum 25 promotes righting 23 compression springs 24 of slips outsideExpansion, is anchored on casing wall.Glue tube base 15 is gone up under the effect of the pressure and exterior central tube 16 continues traveling downwardly three packing elements of compression18, packing element 18 is sealed oil sets annular space.Drive upper joint sleeve 7 descending while upper glue tube base 15 is descending, upper joint sleeve 7With the jump ring 5 between seating nipple 6 also along the pawl up-downgoing on the outer wall of seating nipple 6, the grappling of righting slips 23 firmly, glueWhen the compression of cylinder 18 is completed, jump ring 5 is stuck on the pawl of the outer wall of seating nipple 6, now completes the task of grappling and release, and oil pipe stopsJust suppress.
After completing grappling release, anchoring effect is soundd out into tubing string decentralization, after confirmation, upper lifting pipe post is realized giving up.ImplementedJourney is that, when tubing string is transferred and soundd out, the sliding pin 10 in the short slideway of upper center tube 3 enters in slideway long in decentralization,The related upper center tube 3 of upper lifting pipe post is up, and long slideway of the sliding pin 10 from central tube 3 is slipped downwards always, upper center tubePropose, complete to give up.
When operation needs to salvage chute type sub-releasing axle plug again, 2 are connected using Special fishing tool7/8〃Oil pipe lower going-into-wellInterior, Special fishing tool collides stuck with fishing head, and upper lifting pipe post completes deblocking, salvages task.Implementation process is fishing toolCollide stuck with fishing head 4, during upper lifting pipe post, fishing head 4 is up to cut deblocking pin 8, and fishing head 4 continues up, fishing head 4On outer step be stuck on the interior step of seating nipple 6, now give up 9 top spring arm in the bottom Nei Zhi of no fishing head 4In the case of support, to contract, buckled outside the spring on 9 of giving up and lose kneading with the interior junction of buckleing of seating nipple 6, given up and 9 openBegin descending, related lower center tube 17, hypocentrum 25, sheath 22, upper centrum 21 are descending, and now righting slips 23 loses inner support,Return unfreezing is shunk under the effect of spring 24, packing element 18 shrinks return in the presence of elasticity, so as to complete unfreezing, deblocking appointBusiness.
After the completion of grappling release, in the case where that cannot complete to give up, upper lifting pipe post to suspending weight is rotated forward, now rightingSlips 23 is stuck on casing wall, and upper centrum 21, hypocentrum 25 and sheath 22 and its top accessory are all motionless, only upper center tube 3,Lower center tube 17 and lower contact 27 now cut safety pin 30 with tubing string rotating forward, hypocentrum 25 and lower center tube 17Left-hand thread junction is fallen out, and reaches the purpose of unfreezing deblocking, and safety acts tubing string.
The drawbacks of present invention avoids high pressure or big load above carries cutting pin and given up, it is outstanding using big load fixing pinThe principle hang, given up without power ramp, it is ensured that release grappling in place, prevents to give up in advance, improves water blockoff and shut-in well efficiency, keeps awayExempt from unnecessary waste.