CN204041033U - The rear-mounted restriction choke of the natural gas well - Google Patents
The rear-mounted restriction choke of the natural gas well Download PDFInfo
- Publication number
- CN204041033U CN204041033U CN201420420957.7U CN201420420957U CN204041033U CN 204041033 U CN204041033 U CN 204041033U CN 201420420957 U CN201420420957 U CN 201420420957U CN 204041033 U CN204041033 U CN 204041033U
- Authority
- CN
- China
- Prior art keywords
- slips
- mandrel
- natural gas
- gas well
- packing element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002343 natural gas well Substances 0.000 title claims abstract description 45
- 238000012856 packing Methods 0.000 claims abstract description 67
- 241000239290 Araneae Species 0.000 claims description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003345 natural gas Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses the rear-mounted restriction choke of a kind of natural gas well, belong to natural gas production field.The rear-mounted restriction choke of the described natural gas well comprises interconnective delivery parts, parts, seal member and throttle part are salvaged in grappling.The rear-mounted restriction choke of the natural gas well described in the utility model utilizes chock pressure difference anchoring slips, setting packing element, by packing element elastic force self-unsealing, anchoring in oil pipe, setting, can take out by raising integrally, delivery is completed by wire rope, fishing, have simple to operate, applying flexible, the advantage of dependable performance, without the need to dynamic tubing string in the later maintenance operation that the natural gas well is produced, restriction choke disposable integral can be salvaged and take out, therefore the utility model is used, there is simplification work flow, reduce workload, shorten duty cycle, and reduce the advantage of operating cost.
Description
Technical field
The utility model relates to natural gas production field, particularly the rear-mounted restriction choke of a kind of natural gas well.
Background technology
When adopting Downhole Choking Technology to carry out natural gas production, need to use throttling arrangement, prevent pit shaft and surface line gas hydrate synthesis to reach, reduce surface line operating pressure, improve air-flow fluid-carrying capability, slow down the exciting degree of bottom pressure, and reduce the object of the functions such as gas well shakes out.
At present, apply more downhole choke device and mostly be fixation type throttle device.
Realizing in process of the present utility model, inventor finds that prior art at least exists following problem:
During use, fixation type throttle device enters desired depth under being connected to flow string.Because the work cylinder position of fixation type throttle device is determined, fixation type throttle device operating position not easily adjusts, need move tubing string during later maintenance operation, cause that operating cost is high, workload is large, duty cycle is long, and length directly affected the effect that gas well deliverability recovers duty cycle.Therefore, this type of fixation type throttle device plays due economic benefit to gas well considerable influence.
Utility model content
In order to the fixation type throttle device operating position solving prior art not easily adjusts, and cause that operating cost is high, workload is large and duty cycle long problem, the utility model embodiment provides the rear-mounted restriction choke of a kind of natural gas well, can meet under the requirement of motionless flow string, carried out the rear-mounted restriction choke of the natural gas well by wire rope entirety delivery and fishing.Described technical scheme is as follows:
The rear-mounted restriction choke of a kind of natural gas well, the rear-mounted restriction choke of the described natural gas well comprises interconnective delivery parts, parts, seal member and throttle part are salvaged in grappling,
Described delivery parts comprise disconnection and drag for head, disconnection ring, shear pin, mandrel, dog screw, mandrel nut and top connection, an outer cover then described disconnection ring is dragged in described disconnection, described disconnection ring drags for head by described shear pin with described disconnection and is connected, described mandrel inserts described disconnection and drags for a rear end and coupled, head is dragged in described disconnection and described mandrel limits mutual alignment by described dog screw, described core back-end is connected to described mandrel nut, and described disconnection ring rear end is connected to described top connection;
Described grappling is salvaged parts and is comprised anchor assemblies and salvage assembly, described anchor assemblies comprises slips axle, slip spider, slips, slips starting taper, flower cover, seal head and anti-rotation are surely followed closely, it is outside that described slips axle is socketed described top connection, described slip spider, it is outside that described slips and described slips starting taper are socketed in slips axle in turn, described slips is arranged on described slip spider, described slips starting taper stretches into described slips rear end, described slips starting taper rear end arranges described flower cover, described flower cover is stretched in described top connection rear end, described top connection can be moved relative to described flower cover, described flower cover outer cover then described seal head, described anti-rotation is surely followed closely and is arranged on described seal head, described salvaging assembly comprises slip spider limit screw cap, slip spider limit screw cap is surely followed closely, slips spacing ring, slips spacing ring is surely followed closely, the spacing semi-ring of slips axle and deblocking shear pin, described slip spider limit screw cap is connected to the front end of described slips axle, described slip spider limit screw cap is surely followed closely by described slip spider limit screw cap and is fixed with described slips axle, it is outside that described slips spacing ring is socketed in described slips, described slips spacing ring is surely followed closely by described slips spacing ring and is fixed with described slips, the spacing semi-ring of described slips axle is arranged on described slips axle, the spacing semi-ring of described slips axle can move relative to described slips starting taper, be connected by described deblocking shear pin between described slips starting taper with described slips axle,
Described seal member comprises piston, upper support tube, lower support cylinder, packing element mandrel, packing element and lock ring, described piston is arranged on described flower cover rear end, described packing element core sleeve is connected on described piston exterior, described packing element mandrel overlaps with described flower and is connected, described upper support tube, described packing element and described lower support cylinder are arranged on described packing element mandrel exterior in turn, described upper support tube is connected with described seal head, described piston can move relative to described lower support cylinder, described lock ring is arranged between described packing element mandrel and described piston, by piston described in described lock rings and the relative position between described packing element mandrel,
It is stifled that described throttle part comprises valve seat, valve, valve seat copper packing, valve pressure cap, slot pipe and the end, described valve seat, described valve, described valve seat copper packing and described valve pressure cap are installed on described piston, described valve seat is connected with described valve, described slot pipe is connected to described lower support tube rear end, and the described end is blocked up and is connected to described slot pipe rear end;
Original state, described mandrel nut stretches into described flower cover rear end, and described mandrel end contacts with described piston tip.
Alternatively, head is dragged in described disconnection and described mandrel is threaded connection, and described mandrel and described mandrel nut are threaded connection, and described top connection and described disconnection ring are threaded connection.
Alternatively, described upper support tube and described seal head are threaded connection, described slot pipe and described lower support cylinder are threaded connection, the described end, is blocked up and is threaded connection with described slot, described flower cover is threaded connection with described packing element mandrel, and described valve seat and described valve are threaded connection.
Alternatively, described piston is provided with lock piston tooth, and corresponding described lock ring is provided with lock ring lock tooth, and described lock piston tooth and described lock ring are locked tooth and matched.
Alternatively, described top connection rear end is provided with top connection expansion pawl, and described top connection expansion pawl is provided with distortion groove, and described flower cover front end is provided with expansion pawl, and described flower cover rear end is provided with groove, original state, and described top connection expansion pawl stretches in described groove.
Further, O RunddichtringO is provided with between described packing element mandrel and described piston.
Further, O RunddichtringO is provided with between described packing element mandrel and described upper support tube.
Further, O RunddichtringO is provided with between described packing element mandrel and described lower support cylinder.
Further, O RunddichtringO is provided with between described piston and described lower support cylinder.
Further, O RunddichtringO is provided with between described piston and described valve seat.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
The rear-mounted restriction choke of the natural gas well described in the utility model causes the action of the preliminary grappling tube inner wall of slips by delivering parts, produce slips anchoring, the setting action of packing element, salvage parts by grappling and rear-mounted for the natural gas well described in the utility model restriction choke is anchored on permanent position in oil pipe, the slip spider that during salvaging, fisher captures in grappling salvaging parts carries out the rear-mounted restriction choke raising integrally of the described natural gas well, the annular space between the rear-mounted restriction choke inwall to tube inner wall of the described natural gas well is sealed by seal member, produce chock pressure difference by throttle part and promote pistons work, for the described natural gas well rear-mounted restriction choke packing element is setting, slips anchoring provides power resources.
In sum, the rear-mounted restriction choke of the natural gas well described in the utility model utilizes chock pressure difference anchoring slips, setting packing element, by packing element elastic force self-unsealing, anchoring in oil pipe, setting, can take out by raising integrally, delivery is completed by wire rope, fishing, have simple to operate, applying flexible, the advantage of dependable performance, without the need to dynamic tubing string in the later maintenance operation that the natural gas well is produced, restriction choke disposable integral can be salvaged and take out, therefore the utility model is used, there is simplification work flow, reduce workload, shorten duty cycle, and reduce the advantage of operating cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the natural gas well rear-mounted restriction choke overall structure sectional view that the utility model embodiment provides;
Fig. 2 is the sectional view that parts are salvaged in the delivery parts that provide of the utility model embodiment and grappling;
Fig. 3 is the sectional view of the seal member that provides of the utility model embodiment and throttle part.
In figure, each symbol represents that implication is as follows:
A delivers parts,
Parts are salvaged in B grappling,
C seal member,
D throttle part,
1. slips axle, 2. slip spider, 3. slips, 4. slips spacing ring, 5. slip spider limit screw cap, 6. mandrel, 7. slips starting taper, 8. slips spacing ring is surely followed closely, 9. mandrel nut, 10. dog screw, the spacing semi-ring of 11. slips axle, 12. disconnection rings, 13. disconnect drags for head, 14. shear pins, 15. top connections, 16. slip spider limit screw caps are surely followed closely, 17. deblocking shear pins
Support tube on 21., 22. the one O RunddichtringOs, 23. lower support cylinders, 24. anti-rotations are surely followed closely, 25. slot pipes, 26. seal heads, 27. ends, were blocked up, 28. valves, 29. valve pressure caps, 30. valve seats, 31. the 2nd O RunddichtringOs, 32. valve seat copper packings, 33. pistons, 34. the 3rd O RunddichtringOs, 35. packing element mandrels, 36. the 4th O RunddichtringOs, 37. the 5th O RunddichtringOs, 38. flower covers, 39. lock rings, 40. packing elements.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
As Figure 1-3, the utility model provides the rear-mounted restriction choke of a kind of natural gas well, the rear-mounted restriction choke of the described natural gas well comprises interconnective delivery components A (see Fig. 1), part B (see Fig. 1), seal member C (see Fig. 2) and throttle part D (see Fig. 2) are salvaged in grappling, front-end and back-end in the utility model are all define with the duty of component, such as, deliver components A and be in device foremost
As shown in Figure 2, described delivery components A is for causing the action of the preliminary grappling tube inner wall of slips 3, produce slips 3 grappling, the setting action of packing element 40, described delivery components A comprises disconnection and drags for 13, disconnection ring 12, shear pin 14, mandrel 6, dog screw 10, mandrel nut 9 and top connection 15, 13 outer cover then described disconnection ring 12 is dragged in described disconnection, described disconnection ring 12 drags for 13 by described shear pin 14 and described disconnection and is connected, described mandrel 6 inserts described disconnection and drags for 13 rear end and coupled, described disconnection is dragged for 13 and is limited mutual alignment with described mandrel 6 by described dog screw 10, described mandrel 6 rear end is connected to described mandrel nut 9, described disconnection ring 12 rear end is connected to described top connection 15,
As shown in Figure 2, the permanent position that part B is used for being anchored on by rear-mounted for the natural gas well described in the utility model restriction choke in oil pipe is salvaged in described grappling, the slip spider 2 that during salvaging, fisher captures in grappling salvaging part B carries out the rear-mounted restriction choke raising integrally of the described natural gas well, described grappling is salvaged part B and is comprised anchor assemblies and salvage assembly, described anchor assemblies comprises slips axle 1, slip spider 2, slips 3, slips starting taper 7, flower cover 38 (see Fig. 3), seal head 26 (see Fig. 3) and anti-rotation surely follow closely 24 (see Fig. 3), it is outside that described slips axle 1 is socketed described top connection 15, described slip spider 2, it is outside that described slips 3 and described slips starting taper 7 are socketed in slips axle 1 in turn, described slips 3 is arranged on described slip spider 2, described slips starting taper 7 stretches into described slips 3 rear end, as shown in Fig. 3 and Fig. 1, described slips starting taper 7 rear end arranges described colored cover 38, described colored cover 38 is stretched in described top connection 15 rear end, described top connection 15 can be moved relative to described colored cover 38, described colored cover 38 outer cover then described seal head 26, described anti-rotation is surely followed closely 24 and is arranged on described seal head 26, as shown in Figure 2, described salvaging assembly comprises slip spider limit screw cap 5, slip spider limit screw cap surely follows closely 16, slips spacing ring 4, slips spacing ring surely follows closely 8, the spacing semi-ring 11 of slips axle and deblocking shear pin 17, described slip spider limit screw cap 5 is connected to the front end of described slips axle 1, described slip spider limit screw cap 5 is surely followed closely 16 by described slip spider limit screw cap and is fixed with described slips axle 1, it is outside that described slips spacing ring 4 is socketed in described slips 3, described slips spacing ring 4 is surely followed closely 8 by described slips spacing ring and is fixed with described slips 3, the spacing semi-ring of described slips axle 11 is arranged on described slips axle 1, the spacing semi-ring of described slips axle 11 can move relative to described slips starting taper 7, be connected by described deblocking shear pin 17 between described slips starting taper 7 with described slips axle 1,
As shown in Figure 3, described seal member C is for sealing the annular space between the rear-mounted restriction choke inwall to tube inner wall of the described natural gas well, described seal member C comprises piston 33, upper support tube 21, lower support cylinder 23, packing element mandrel 35, packing element 40 and lock ring 39, described piston 33 is arranged on described colored cover 38 rear end, it is outside that described packing element mandrel 35 is socketed in described piston 33, described packing element mandrel 35 is connected with described colored cover 38, described upper support tube 21, it is outside that described packing element 40 and described lower support cylinder 23 are arranged on described packing element mandrel 35 in turn, described upper support tube 21 is connected with described seal head 26, described piston 33 can move relative to described lower support cylinder 23, described lock ring 39 is arranged between described packing element mandrel 35 and described piston 33, the relative position between described piston 33 and described packing element mandrel 35 is locked by described lock ring 39,
As shown in Figure 3, described throttle part D is for generation of chock pressure difference and promote piston 33 and work, and then promotion slips 3 is anchored to tube inner wall, extruding packing element 40 is setting in tube inner wall, limit gas flow and enter oil pipe by throttling valve 28, described throttle part D comprises valve seat 30, valve 28, valve seat copper packing 32, valve pressure cap 29, slot pipe 25 and the end stifled 27, described valve seat 30, described valve 28, described valve seat copper packing 32 and described valve pressure cap 29 are installed on described piston 33, they are that the described natural gas well rear-mounted restriction choke packing element 40 is setting, slips 3 anchoring provides power resources, described valve seat 30 is connected with described valve 28, described slot pipe 25 is connected to described lower support cylinder 23 rear end, the described end stifled 27, is connected to described slot pipe 25 rear end, it is passages that air-flow enters restriction choke that described slot pipe 25 and the described end block up 27, described slot pipe 25 and the described end, blocked up on 27 and have slot, described slot is for filtering the sand grains in certain particle size range,
See Fig. 1, also can see Fig. 2 and Fig. 3, original state, described mandrel nut 9 stretches into described colored cover 38 rear end, and described mandrel 6 end contacts with described piston 33 top.
Alternatively, as shown in Figure 2, described disconnection is dragged for 13 and is threaded connection with described mandrel 6, and described mandrel 6 is threaded connection with described mandrel nut 9, and described top connection 15 is threaded connection with described disconnection ring 12.
Alternatively, as shown in Figure 3, described upper support tube 21 is threaded connection with described seal head 26, described slot pipe 25 is threaded connection with described lower support cylinder 23, the described end stifled 27, is threaded connection with described slot, described colored cover 38 is threaded connection with described packing element mandrel 35, and described valve seat 30 is threaded connection with described valve 28.
Alternatively, as shown in Figure 3, described piston 33 is provided with lock piston tooth (not marking in figure), corresponding described lock ring 39 is provided with lock ring lock tooth (not marking in figure), described lock piston tooth (not marking in figure) and described lock ring are locked tooth (not marking in figure) and are matched, lock engaging of tooth (not marking in figure) by lock piston tooth (not marking in figure) and lock ring to limit piston 33 and can only move upward, guarantee that relative distance between upper support tube 21 and lower support cylinder 23 is constant and reach the effect keeping the setting state of packing element 40.
Alternatively, as shown in Figure 2, also can see Fig. 1, described top connection 15 rear end is provided with top connection expansion pawl (not marking in figure), described top connection expansion pawl (not marking in figure) is provided with distortion groove (not marking in figure), as shown in Figure 3, also can see Fig. 1, described colored cover 38 front end is provided with expansion pawl (not marking in figure), described colored cover 38 rear end is provided with groove (not marking in figure), original state, see Fig. 1, described top connection expansion pawl (not marking in figure) is stretched in described groove (not marking in figure).
Operating principle of the present utility model is as follows:
See Fig. 2, operation thrown in by the rear-mounted restriction choke of the natural gas well described in the utility model:
When going into the well, be connected to disconnection by wire rope to drag on 13 and send into designated depth, upper body wire rope slips 3 is preliminary grappling tube inner wall under Gravitative Loads, break shear pin 14 by wire rope after grappling is painstaking and pull on moving mandrel 6 up i.e. drive top connection 15 release plunger 33 working space, specific operation process is as follows:
The rear-mounted restriction choke of the described natural gas well by after entering desired depth under wire rope slowly on carry, now, slips 3 is preliminary grappling tube inner wall under Gravitative Loads, slips 3 has also strutted and has stung tight tube inner wall by slips starting taper 7, continue upwards to lift after wire rope is painstaking, shear pin 14 is cut off, after this carry on continuing, disconnection Lao Tou13Dai moving mandrel 6, mandrel nut 9, when dog screw 10 goes upward to the lower surface of disconnection ring 12, top connection 15 can be driven up by disconnection ring 12, now, mandrel nut 9 has walked to the step place that top connection 15 lower end has the deformable segments of the expansion pawl of distortion groove, the external diameter of expansion pawl deformable segments lower end can reduce diameter and the groove of flower cover 38 (see Fig. 3) inwall in skidding off under upper lifting force effect, continuation is carried the inner chamber that expansion pawl can be forced to slip into slips axle 1, continuation is carried all parts just can extracting delivery components A out and complete delivery operation.
As shown in Figure 3, the rear-mounted restriction choke sealing operation of the natural gas well described in the utility model:
After top connection 15 release plunger 33 working space, the valve 28 in throttle part D promotes slips starting taper 7 and struts, extrudes slips 3 under chock pressure difference effect, makes slips 3 be anchored in tube inner wall; After top connection 15 release plunger 33 working space, the valve 28 in throttle part D promotes lower support cylinder 23 and extrudes packing element 40 under chock pressure difference effect, makes packing element 40 compressive strain and be adjacent to tube inner wall to form sealing, and specific operation process is as follows:
As shown in Figure 2, expansion pawl under delivery operation top connection 15 slips into rapidly slips axle 1 inner chamber in the process of slips axle 1 inner chamber and can form negative pressure, as shown in Figure 3, it is up rapidly that this negative pressure promotes piston 33 under the acting in conjunction of superposition valve 28 chock pressure difference, can promote lower support cylinder 23 and extrude packing element 40 and expand and be adjacent to tube inner wall and form sealing when piston 33 goes upward to the step end face of lower support cylinder 23.Deliver in operation on to propose action be continue, carry out rapidly, to ensure that piston 33 can have enough kinetic energy and strength to promote rapidly lower support cylinder 23 and extrude packing element 40, also promote slips starting taper 7 (see Fig. 2) simultaneously, make slips 3 (see Fig. 2) be anchored in tube inner wall.During gas well continuous production, the thrust that chock pressure difference produces of valve 28, the formation that packing element 40 can be made stable seals, and makes slips 3 (see Fig. 2) reliably be anchored at tube inner wall.
As shown in Figure 2, the rear-mounted restriction choke fishing of the natural gas well described in the utility model:
During fishing, transfer fishing socket fast in the position apart from the rear-mounted restriction choke of the described natural gas well about 10 meters, make it to accelerate the descending slip spider limit screw cap 5 that can make and enter fishing socket inner chamber, the claw of fishing socket inner chamber can block slip spider limit screw cap 5.After this, slowly on carry fishing socket until deblocking shear pin 17 is cut off by slips axle 1; Continue to carry wire rope slowly painstaking to wire rope, now, the spacing semi-ring 11 of wire rope Yin Kawa axle is stuck in step place in slips starting taper 7 and painstaking, and meanwhile, the expansion pawl that the step place of slips axle 1 lower end has also discharged colored cover 38 (see Fig. 3) upper end reduces the space needed for diameter.Afterwards, wait about one minute, see Fig. 3, treat that the parts such as lower support cylinder 23, piston 33, lock ring 39, packing element mandrel 35 are pushed into initial position downwards by packing element 40 its own resilient, spend cover 38 to be subject to packing element mandrel 35 traction force effect downwards simultaneously, make the expansion pawl of flower cover 38 upper end slip into the internal diameter of seal head 26 downwards and continue slide downward along this internal diameter, be separated with tube inner wall until packing element 40 returns to uncompressed state packing element 40 external diameter.So far, transfer wire rope rapidly, see Fig. 2 and Fig. 3, in the component of slips starting taper less than 7 and Fig. 3, all component can fall under Gravitative Loads, in Fig. 2 slips starting taper 7 just discharge slips 3 be separated from tube inner wall needed for space, again slowly on carry wire rope and all component of rear-mounted for described natural gas well restriction choke can be salvaged out in the lump in oil pipe.
In sum, the rear-mounted restriction choke of the natural gas well described in the utility model utilizes chock pressure difference anchoring slips 3, setting packing element 40, by packing element 40 elastic force self-unsealing, anchoring in oil pipe, setting, can take out by raising integrally, delivery is completed by wire rope, fishing, have simple to operate, applying flexible, the advantage of dependable performance, without the need to dynamic tubing string in the later maintenance operation that the natural gas well is produced, rear-mounted for described natural gas well restriction choke disposable integral can be salvaged and take out, therefore the utility model is used, there is simplification work flow, reduce workload, shorten duty cycle, and reduce the advantage of operating cost.
Further, be provided with O RunddichtringO between described packing element mandrel 35 and described piston 33, namely the 4th O RunddichtringO 36, makes sealing effectiveness better by said structure.
Further, be provided with O RunddichtringO between described packing element mandrel 35 and described upper support tube 21, namely an O RunddichtringO 22, makes sealing effectiveness better by said structure.
Further, be provided with O RunddichtringO between described packing element mandrel 35 and described lower support cylinder 23, namely the 5th O RunddichtringO 37, makes sealing effectiveness better by said structure.
Further, be provided with O RunddichtringO between described piston 33 and described lower support cylinder 23, namely the 3rd O RunddichtringO 34, makes sealing effectiveness better by said structure.
Further, be provided with O RunddichtringO between described piston 33 and described valve seat 30, namely the 2nd O RunddichtringO 31, makes sealing effectiveness better by said structure.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. the rear-mounted restriction choke of the natural gas well, is characterized in that, the rear-mounted restriction choke of the described natural gas well comprises interconnective delivery parts, parts, seal member and throttle part are salvaged in grappling,
Described delivery parts comprise disconnection and drag for head, disconnection ring, shear pin, mandrel, dog screw, mandrel nut and top connection, an outer cover then described disconnection ring is dragged in described disconnection, described disconnection ring drags for head by described shear pin with described disconnection and is connected, described mandrel inserts described disconnection and drags for a rear end and coupled, head is dragged in described disconnection and described mandrel limits mutual alignment by described dog screw, described core back-end is connected to described mandrel nut, and described disconnection ring rear end is connected to described top connection;
Described grappling is salvaged parts and is comprised anchor assemblies and salvage assembly, described anchor assemblies comprises slips axle, slip spider, slips, slips starting taper, flower cover, seal head and anti-rotation are surely followed closely, it is outside that described slips axle is socketed described top connection, described slip spider, it is outside that described slips and described slips starting taper are socketed in slips axle in turn, described slips is arranged on described slip spider, described slips starting taper stretches into described slips rear end, described slips starting taper rear end arranges described flower cover, described flower cover is stretched in described top connection rear end, described top connection can be moved relative to described flower cover, described flower cover outer cover then described seal head, described anti-rotation is surely followed closely and is arranged on described seal head, described salvaging assembly comprises slip spider limit screw cap, slip spider limit screw cap is surely followed closely, slips spacing ring, slips spacing ring is surely followed closely, the spacing semi-ring of slips axle and deblocking shear pin, described slip spider limit screw cap is connected to the front end of described slips axle, described slip spider limit screw cap is surely followed closely by described slip spider limit screw cap and is fixed with described slips axle, it is outside that described slips spacing ring is socketed in described slips, described slips spacing ring is surely followed closely by described slips spacing ring and is fixed with described slips, the spacing semi-ring of described slips axle is arranged on described slips axle, the spacing semi-ring of described slips axle can move relative to described slips starting taper, be connected by described deblocking shear pin between described slips starting taper with described slips axle,
Described seal member comprises piston, upper support tube, lower support cylinder, packing element mandrel, packing element and lock ring, described piston is arranged on described flower cover rear end, described packing element core sleeve is connected on described piston exterior, described packing element mandrel overlaps with described flower and is connected, described upper support tube, described packing element and described lower support cylinder are arranged on described packing element mandrel exterior in turn, described upper support tube is connected with described seal head, described piston can move relative to described lower support cylinder, described lock ring is arranged between described packing element mandrel and described piston, by piston described in described lock rings and the relative position between described packing element mandrel,
It is stifled that described throttle part comprises valve seat, valve, valve seat copper packing, valve pressure cap, slot pipe and the end, described valve seat, described valve, described valve seat copper packing and described valve pressure cap are installed on described piston, described valve seat is connected with described valve, described slot pipe is connected to described lower support tube rear end, and the described end is blocked up and is connected to described slot pipe rear end;
Original state, described mandrel nut stretches into described flower cover rear end, and described mandrel end contacts with described piston tip.
2. the rear-mounted restriction choke of the natural gas well according to claim 1, is characterized in that, head is dragged in described disconnection and described mandrel is threaded connection, and described mandrel and described mandrel nut are threaded connection, and described top connection and described disconnection ring are threaded connection.
3. the rear-mounted restriction choke of the natural gas well according to claim 1, it is characterized in that, described upper support tube and described seal head are threaded connection, described slot pipe and described lower support cylinder are threaded connection, the described end, is blocked up and is threaded connection with described slot, described flower cover is threaded connection with described packing element mandrel, and described valve seat and described valve are threaded connection.
4. the rear-mounted restriction choke of the natural gas well according to claim 1, is characterized in that, described piston is provided with lock piston tooth, and corresponding described lock ring is provided with lock ring lock tooth, and described lock piston tooth and described lock ring are locked tooth and matched.
5. the rear-mounted restriction choke of the natural gas well according to claim 1, it is characterized in that, described top connection rear end is provided with top connection expansion pawl, described top connection expansion pawl is provided with distortion groove, described flower cover front end is provided with expansion pawl, described flower cover rear end is provided with groove, original state, and described top connection expansion pawl stretches in described groove.
6. the rear-mounted restriction choke of the natural gas well according to claim 1, is characterized in that, is provided with O RunddichtringO between described packing element mandrel and described piston.
7. the rear-mounted restriction choke of the natural gas well according to claim 1, is characterized in that, is provided with O RunddichtringO between described packing element mandrel and described upper support tube.
8. the rear-mounted restriction choke of the natural gas well according to claim 1, is characterized in that, is provided with O RunddichtringO between described packing element mandrel and described lower support cylinder.
9. the rear-mounted restriction choke of the natural gas well according to claim 1, is characterized in that, is provided with O RunddichtringO between described piston and described lower support cylinder.
10. the rear-mounted restriction choke of the natural gas well according to any one of claim 1-9 claim, is characterized in that, is provided with O RunddichtringO between described piston and described valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420420957.7U CN204041033U (en) | 2014-07-29 | 2014-07-29 | The rear-mounted restriction choke of the natural gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420420957.7U CN204041033U (en) | 2014-07-29 | 2014-07-29 | The rear-mounted restriction choke of the natural gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041033U true CN204041033U (en) | 2014-12-24 |
Family
ID=52241711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420420957.7U Expired - Fee Related CN204041033U (en) | 2014-07-29 | 2014-07-29 | The rear-mounted restriction choke of the natural gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041033U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503718A (en) * | 2017-09-22 | 2017-12-22 | 中国石油集团西部钻探工程有限公司 | Underground throttle device |
| CN111042778A (en) * | 2019-11-26 | 2020-04-21 | 宝鸡瑞林石油机电设备有限责任公司 | Multiple-time seat-seal preset type throttler |
| CN112302583A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Restrictor and outer working barrel |
| CN117553445A (en) * | 2024-01-09 | 2024-02-13 | 浙江拓感科技有限公司 | Infrared detector quick start integrated refrigerator subassembly |
-
2014
- 2014-07-29 CN CN201420420957.7U patent/CN204041033U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503718A (en) * | 2017-09-22 | 2017-12-22 | 中国石油集团西部钻探工程有限公司 | Underground throttle device |
| CN107503718B (en) * | 2017-09-22 | 2024-04-26 | 中国石油天然气集团有限公司 | Downhole choke |
| CN112302583A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Restrictor and outer working barrel |
| CN112302583B (en) * | 2019-07-29 | 2023-03-14 | 中国石油化工股份有限公司 | Restrictor and outer working barrel |
| CN111042778A (en) * | 2019-11-26 | 2020-04-21 | 宝鸡瑞林石油机电设备有限责任公司 | Multiple-time seat-seal preset type throttler |
| CN117553445A (en) * | 2024-01-09 | 2024-02-13 | 浙江拓感科技有限公司 | Infrared detector quick start integrated refrigerator subassembly |
| CN117553445B (en) * | 2024-01-09 | 2024-03-22 | 浙江拓感科技有限公司 | Infrared detector quick start integrated refrigerator subassembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204041033U (en) | The rear-mounted restriction choke of the natural gas well | |
| CN203374238U (en) | Integrated dust squeezing bridge plug capable of being taken out | |
| CN103470239B (en) | A kind of continuous fracturing technology method of dragging with pressure | |
| CN202047772U (en) | Expansion and salvage integrated expansion pipe assembly | |
| CN201013335Y (en) | Water injection well pressure-working technique pipe column | |
| CN203961903U (en) | Oil-pipe bridge plug | |
| CN104594817B (en) | A kind of tubing anchor with triple functions | |
| CN113790040A (en) | Oil extraction method of jet pump of series-connection type ultra-deep oil well | |
| CN204716194U (en) | A kind of bridging plug and releasing gadget thereof | |
| CN107780862A (en) | Underground throttle device fishing device | |
| CN204098834U (en) | A kind of oil tube anchor device | |
| CN204920865U (en) | Shale gas well mouth main control valve area is pressed and is changed device | |
| CN204175261U (en) | A kind of restriction choke | |
| CN215632885U (en) | Automatic cleaning underground throttle for composite rubber cylinder bulging sealing sand setting | |
| CN210858651U (en) | Dissolvable special oil pipe bridge plug for under-pressure operation | |
| CN103306655B (en) | A kind of dragging staged fracturing method with pressure | |
| CN207033402U (en) | Ground gas extraction drilling well platen sealing device | |
| CN204827359U (en) | But integration modus ponens oil recovery bridging plug | |
| CN108533234A (en) | Horizontal well fixed tubular column sublevel fill stoping and kit | |
| CN201276993Y (en) | Novel anti-propping slips | |
| CN211666671U (en) | Collecting ball type adapter | |
| CN204435330U (en) | The interim ecological bleeder pipe plugging system of a kind of water power hydraulic engineering | |
| CN203847359U (en) | Oil well pump and oil extraction system of submersible linear motor shaft | |
| CN104514528B (en) | Reducer packing element lytic agent delivery device | |
| CN110965957B (en) | Blocking tool in oil pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |