CN103541697B - Anti-fall single packing element downhole choke device - Google Patents
Anti-fall single packing element downhole choke device Download PDFInfo
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- CN103541697B CN103541697B CN201210241337.2A CN201210241337A CN103541697B CN 103541697 B CN103541697 B CN 103541697B CN 201210241337 A CN201210241337 A CN 201210241337A CN 103541697 B CN103541697 B CN 103541697B
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Abstract
The invention discloses a kind of anti-fall single packing element downhole choke device, for improving throttling arrangement sealing, the object extending its application life and stablize and prevent throttling from gliding designs, mainly comprise the locking cover connecting dispenser and body, fishing head on suit body, slips and slips support set, be located at the setting plunger barrel of locking cover below, slips support set in suit on support set, packing element support set, packing element and cylinder jacket, be located at valve and the valve seat of setting plunger barrel bottom, the sand cap that connection cylinder jacket and outer support are overlapped and the anti-fall claw etc. that is connected with adapter sleeve.When the present invention installs, device is easily setting; After installation, packing element and tubing seal good, application life stablize; During salvaging, salvage pin and cut off, body and slips support set move up, and depart from packing element, packing element effectively can be bounced back, make salvaging easy; Anti-fall claw can well be prevented device and move down, avoiding device landing shaft bottom.Good airproof performance of the present invention, application life stablizes.
Description
Technical field
The present invention relates to a kind of anti-fall single packing element downhole choke device, belong to production gas technology field, oil field.
Background technology
Downhole choke technology relies on downhole choke device to realize pit shaft reducing pressure by regulating flow, and after utilizing ground temperature to heat to make throttling, the gas flow temperature of well head returns to the temperature before throttling substantially, to solve many technical barriers that in gas well liquid loading process, pit shaft and ground exist.
At Soviet Union's Sulige gas field, the application of downhole choke technology, by preventing gas hydrates shaping and development to reduction well head and surface gathering system pressure, optimizes ground flow, becomes the key technology of Soviet Union's Sulige gas field exploitation.
Soviet Union's Sulige gas field high pressure is only 1 ~ 2 year campaign, and initial stage pressure drop rate is fast, and the gas well low pressure production cycle is long.Run in order to ensure the steadily normal of Soviet Union's Sulige gas field mesolow gas collection, the working life of underground throttle device must can meet the high pressure campaign of gas well.Along with the exploitation of Soviet Union's Sulige gas field, well yield is more and more lower, and minority stripper well can not normally be produced because of hydrops.For meeting Production requirement, regulating gas well output, adopting water pumping gas production measure and giving full play to gas well deliverability, restriction choke need be salvaged from pit shaft.
The restriction choke of current use because of service time long; packing element easily produces permanent deformation; cause in salvaging process and can not effectively bounce back; and; when pit shaft hydrops is on restriction choke; in order to conducting oil jacket pressure, usually there will be restriction choke and to drop the phenomenon in shaft bottom, cause gas well cannot carry out follow-up gas producing technology test.
Summary of the invention
The object of the present invention is to provide a kind of anti-fall single packing element downhole choke device, its good airproof performance, application life is stable, anti-fall and easily salvage, and the Efficient Development that can be Sulige gas field of reviving provides technical support.
Concrete technical scheme of the present invention is as follows:
Locking cover expanding barrel top, top is threaded gland, and is locked by screw.Dispenser is through gland, and the expanding bar in its top is fixed in the expanding barrel of locking cover top by radial pin, and dispenser bottom undergauge bar inserts in the undergauge cylinder of locking cover bottom.
Locking cover undergauge drum outer wall suit body, body top connects salvages baffle ring, next coming in order suit fishing head, slips and slips support set.Slips top snaps in fishing head bottom hook groove, and is locked in body outer wall slip spider by lock tube.Slips support set is fixed on body bottom by salvaging pin, and the limit baffle ring below body snaps in slips support set inboard wall groove.Master lock cover outer wall convex shoulder mounting slips support set inboard wall groove, inwall convex shoulder mounting locking cover bottom outer wall boss.
Setting plunger barrel is located at locking cover below, support set in its outer wall suit.Middle support set top connects overlaps by master lock the lower baffle ring compressed.Middle support set outer wall suit slips support set 11, packing element support set, packing element and cylinder jacket, packing element support set connects slips support set and is fixed by pinning, and cylinder jacket and middle support set are mounted by lug bosses at end part.
Connect the valve seat of being locked by valve pinning in expanding hole, setting plunger barrel bottom, in valve seat, be provided with the valve compressed by pressure cap.Sand cap upper and lower end connects cylinder jacket and outer support cover respectively.The adapter sleeve upper end be located in sand cap connects setting plunger barrel, Connection Card screw claw in lower center hole, and claw screw connects the anti-fall claw being positioned at outer support cover, and outer support cover lower end connects claw and shrinks stopper.
The advantage of the anti-fall single packing element downhole choke device of the present invention is: during installation, device is easily setting; After installation, packing element and tubing seal good, application life stablize; During salvaging, salvage pin and cut off, body and slips support set move up, and depart from packing element, packing element effectively can be bounced back, make salvaging easy; Anti-fall claw can well be prevented device and move down, avoiding device landing shaft bottom.
Accompanying drawing explanation
Fig. 1 is that anti-fall single packing element downhole choke device enters well status architecture schematic diagram.
Fig. 2 is slips support set 11, limit baffle ring 13, master lock cover 14 and lower baffle ring 15 partial enlarged view.
Fig. 3 is that anti-fall single packing element downhole choke device sets status architecture schematic diagram.
Fig. 4 is that anti-fall single packing element downhole choke device salvages status architecture schematic diagram.
Detailed description of the invention
Further illustrate referring to figs. 1 through 4 pairs of embodiments of the invention:
Embodiment:
Locking expanding barrel top, cover 3 top is threaded gland 2, and is locked by screw 5.Dispenser 1 is through gland 2, and the expanding bar in its top is fixed in the expanding barrel of locking cover 3 top by radial pin 4, and its underpart undergauge bar inserts in the undergauge cylinder of locking cover 3 bottom.
Locking cover 3 undergauge drum outer wall suit body 7, baffle ring 6 is salvaged in the screwed connection of body 7 top, next coming in order suit fishing head 8, slips 9 and slips support set 11.Slips 9 top snaps in fishing head 8 bottom hook groove, and is locked in body 7 outer wall slip spider by lock tube 10.Slips support set 11 is fixed on body 7 bottom by salvaging pin 12, and the limit baffle ring 13 below body 7 snaps in slips support set 11 inboard wall groove.Master lock overlaps 14 outer wall convex shoulder mounting slips support set 11 inboard wall grooves, inwall convex shoulder mounting locking cover 3 bottom outer wall boss.
Setting plunger barrel 20 is located at below locking cover 3, support set 19 in its outer wall suit.Middle support set 19 top connects the lower baffle ring 15 being overlapped 14 screw threads compressions by master lock, middle support set 19 outer wall suit slips support set 11, packing element support set 16, packing element 18 and cylinder jacket 21, packing element support set 16 screwed connection slips support set 11 and being fixed by pinning 17, cylinder jacket 21 and middle support set 19 are mounted by lug bosses at end part.
Connect the valve seat 22 of being locked by valve pinning 23 in expanding hole, setting plunger barrel 20 bottom, in valve seat 22, be provided with the valve 24 compressed by pressure cap 25 screw thread.Sand cap 26 upper and lower end respectively internal thread connects cylinder jacket 21 and outer support cover 30.The adapter sleeve 27 upper end internal thread be located in sand cap 26 connects setting plunger barrel 20, Connection Card screw claw 28 in lower center hole, claw screw 28 connects the anti-fall claw 29 of tapering wing formula being positioned at outer support cover 30, and outer support is overlapped 30 lower end internal threads and connected claw contraction stopper 31.
Assembling of the present invention and the course of work as follows:
1. assemble:
Inserted dispenser 1 lower end in locking cover 3 central through hole, inserted by radial pin 4 in the radial direction through hole of delivery tool 1 and locking cover 3, upper gland 2 is lock-screw 5 also.
Fishing head 8 is enclosed within body 7 outer wall, and screws on salvaging baffle ring 6.Slips 9 upper end is embedded fishing head 8, and is fastened in body 7 slip spider by slips cover for seat 10, then overlap upper slips support set 11.Body 7 is enclosed within locking cover 3, loads limit baffle ring 13, tighten and salvage pin 12.
Loaded from cylinder jacket 21 bottom by middle support set 19, put packing element 18, packing element support set 16 and lower baffle ring 15, after tightening master lock cover 14, overall loading slips support set 11, tightens packing element support set 16 with pin 17.
Valve 24 is loaded valve seat 22, then valve seat 22 is loaded in expanding hole, setting plunger barrel 20 bottom, tighten pressure cap 25 and valve pin 23.Then, support set 19 setting plunger barrel 20 being loaded in cylinder jacket 21.
Tighten adapter sleeve 27 and overlap 30 and sand cap 26 with setting plunger barrel 20, sand cap 26 with cylinder jacket 21, outer support, by claw screw 28, anti-fall claw 29 is fixed on adapter sleeve 27 lower end, tighten claw and shrink stopper 31, complete assembling.
2. throw in (see figure 2):
Steel wire operation connects dispenser 1 by tool string, enter under restriction choke to projected depth, on carry tool string and make slips 9 and oil pipe locking, continuation is proposed jarring and cut off radial pin 4, dispenser 1 opposing body 7 moves up, drive locking cover 3 to throw off master lock cover 14, trip out pit shaft with tool string, complete restriction choke and throw in.
Pit shaft air pressure promotes setting plunger barrel 20 and drives cylinder jacket 21 up, makes packing element 18 Expansion sealing oil pipe, drives anti-fall claw 29 to eject from claw contraction stopper 31 simultaneously and contacts with oil pipe, prevent from gliding.
3. salvage (see figure 3):
Enter well by tool string connection Special fishing tool and catch fishing head 8, upwards jarring makes slips 9 and oil pipe depart from, jarring force upwards makes body 7 drive slips support set 11 up together with packing element support set 16, cut off after salvaging pin 12, slips support set 11 makes packing element 18 bounce back with relative the pulling open of middle support set 19, when can avoid carrying, packing element 18 rubs oil pipe, makes salvaging easier.In addition, if throttling moves down, when the anti-fall claw 29 ejected runs into oil pipe joint hoop, on its wing, tapering can stop descending and abscission joint hoop, and when it is up, on the wing, tapering can abscission joint hoop smoothly.
Claims (2)
1. an anti-fall single packing element downhole choke device, is characterized in that:
Locking cover expanding barrel top, (3) top is threaded gland (2), and is locked by screw (5); Dispenser (1) is through gland (2), and the expanding bar in its top is fixed in the expanding barrel of locking cover (3) top by radial pin (4), and its underpart undergauge bar inserts in the undergauge cylinder of locking cover (3) bottom;
Locking cover (3) undergauge drum outer wall suit body (7), body (7) top connects salvages baffle ring (6), next coming in order suit fishing head (8), slips (9) and slips support set (11); Slips (9) top snaps in fishing head (8) bottom hook groove, and is locked in body (7) outer wall slip spider by lock tube (10); Slips support set (11) is fixed on body (7) bottom by salvaging pin (12), and the limit baffle ring (13) of body (7) below snaps in slips support set (11) inboard wall groove; Master lock cover (14) outer wall convex shoulder mounting slips support set (11) inboard wall groove, inwall convex shoulder mounting locking cover (3) bottom outer wall boss;
Setting plunger barrel (20) is located at locking cover (3) below, support set (19) in its outer wall suit; Middle support set (19) top connects the lower baffle ring (15) compressed by master lock cover (14); Middle support set (19) outer wall suit slips support set (11), packing element support set (16), packing element (18) and cylinder jacket (21), packing element support set (16) connects slips support set (11) and is fixed by pinning (17), and cylinder jacket (21) and middle support set (19) are mounted by lug bosses at end part;
Connect the valve seat (22) of being locked by valve pinning (23) in expanding hole, setting plunger barrel (20) bottom, in valve seat (22), be provided with the valve (24) compressed by pressure cap (25); Sand cap (26) upper and lower end connects cylinder jacket (21) and outer support cover (30) respectively; Adapter sleeve (27) upper end be located in sand cap (26) connects setting plunger barrel (20), Connection Card screw claw (28) in lower center hole, claw screw (28) connects the anti-fall claw (29) being positioned at outer support cover (30), and outer support cover (30) lower end connects claw and shrinks stopper (31).
2. anti-fall single packing element downhole choke device as claimed in claim 1, is characterized in that locking cover expanding barrel top, (3) top is threaded gland (2); Baffle ring (6) is salvaged in the screwed connection of body (7) top; Middle support set (19) top connects the lower baffle ring (15) compressed by master lock cover (14) screw thread; Packing element support set (16) screwed connection slips support set (11); Pressure cap (25) screw thread compresses valve (24); Sand cap (26) upper and lower end respectively internal thread connects cylinder jacket (21) and outer support cover (30); Adapter sleeve (27) upper end internal thread connects setting plunger barrel (20); Claw screw (28) connects the anti-fall claw of the tapering wing formula (29) being positioned at outer support cover (30); Outer support cover (30) lower end internal thread connects claw and shrinks stopper (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241337.2A CN103541697B (en) | 2012-07-12 | 2012-07-12 | Anti-fall single packing element downhole choke device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241337.2A CN103541697B (en) | 2012-07-12 | 2012-07-12 | Anti-fall single packing element downhole choke device |
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| Publication Number | Publication Date |
|---|---|
| CN103541697A CN103541697A (en) | 2014-01-29 |
| CN103541697B true CN103541697B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210241337.2A Active CN103541697B (en) | 2012-07-12 | 2012-07-12 | Anti-fall single packing element downhole choke device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587293B (en) * | 2016-02-23 | 2018-03-09 | 中国石油天然气股份有限公司 | A kind of box cupling located type underground is with production device |
| 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 |
| 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 |
| CN111075407B (en) * | 2019-12-18 | 2024-01-30 | 中国石油天然气股份有限公司 | Underground throttling production device for gas well full life cycle and application method thereof |
| CN113338838B (en) * | 2020-03-02 | 2023-05-26 | 中国石油天然气股份有限公司 | Preset downhole choke, downhole choke process pipe column and gas production pipe column |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3584684A (en) * | 1969-06-02 | 1971-06-15 | Halliburton Co | Retrievable packer apparatus for use in a well bore and method of prolonging its operating life |
| CN2471929Y (en) * | 2001-01-11 | 2002-01-16 | 中国石油天然气股份有限公司 | Underground choke and fishing tool therefor |
| CN101798913A (en) * | 2010-03-10 | 2010-08-11 | 中国石油天然气股份有限公司 | Differential pressure underground throttle device |
| CN201627572U (en) * | 2010-02-25 | 2010-11-10 | 中国石油天然气股份有限公司 | Downhole choke |
| CN202745835U (en) * | 2012-07-12 | 2013-02-20 | 中国石油天然气股份有限公司 | Anti-slipping single rubber sleeve underground throttling device |
-
2012
- 2012-07-12 CN CN201210241337.2A patent/CN103541697B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3584684A (en) * | 1969-06-02 | 1971-06-15 | Halliburton Co | Retrievable packer apparatus for use in a well bore and method of prolonging its operating life |
| CN2471929Y (en) * | 2001-01-11 | 2002-01-16 | 中国石油天然气股份有限公司 | Underground choke and fishing tool therefor |
| CN201627572U (en) * | 2010-02-25 | 2010-11-10 | 中国石油天然气股份有限公司 | Downhole choke |
| CN101798913A (en) * | 2010-03-10 | 2010-08-11 | 中国石油天然气股份有限公司 | Differential pressure underground throttle device |
| CN202745835U (en) * | 2012-07-12 | 2013-02-20 | 中国石油天然气股份有限公司 | Anti-slipping single rubber sleeve underground throttling device |
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| Publication number | Publication date |
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| CN103541697A (en) | 2014-01-29 |
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