CN103670337B - Split plunger device for continuous production without closing well - Google Patents
Split plunger device for continuous production without closing well Download PDFInfo
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- CN103670337B CN103670337B CN201210346985.4A CN201210346985A CN103670337B CN 103670337 B CN103670337 B CN 103670337B CN 201210346985 A CN201210346985 A CN 201210346985A CN 103670337 B CN103670337 B CN 103670337B
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- well
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- 238000010924 continuous production Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000003139 buffering effect Effects 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 230000000737 periodic effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 241000521257 Hydrops Species 0.000 description 5
- 206010030113 Oedema Diseases 0.000 description 5
- 238000011084 recovery Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000191291 Abies alba Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Abstract
The invention discloses a split plunger device for continuous production without closing a well, which is designed for realizing periodic liquid lifting and improving the production efficiency by utilizing the self energy of a gas well, and comprises an underground buffer device, a split plunger and a wellhead buffer device, wherein the split plunger device comprises a buffer spring and a guide cylinder which are sleeved with a connecting shaft, a setting device which is sleeved with the guide cylinder and connected with a steel wire clamp spring, a split plunger consisting of a plunger body and a split sealing element, a conical sealing rubber cylinder and a sealing cylinder which are connected with an inner supporting ring, a fishing head and a slip which are connected with a main body, an impact rod connected with a main body connecting rod and the like. The integral plunger of the device lifts liquid to a well head, is separated after being impacted by a well head buffer device, falls to the well bottom and is sealed and combined again, and the liquid is lifted periodically by utilizing the self energy of a gas well to reciprocate in an oil pipe under the condition of continuous production without closing the well. The device can improve the production efficiency, break through the well closing limitation of the conventional plunger production, remove accumulated liquid at the bottom of the well and increase the gas production rate of the gas well.
Description
Technical field
The present invention relates to the split type plunger assembly of a kind of responding curve of well quantity-produced, belong to oil gas field drainage gas recovery field.
Background technology
Along with continually developing of Soviet Union's Sulige gas field, part gas well has entered stage middle and later periods of low pressure, low yield, well yield is low, fluid-carrying capability is poor, shaft bottom and pit shaft progressively produce hydrops, and pit shaft hydrops will increase the back pressure of formation, and limits pit shaft production capacity, gas-bearing formation kills completely so that closing well the most at last, causes huge economic loss.Water pumping gas production is the effective ways solving " gas well plug-ging ", is also to excavate one of water-producing gas well productive potentialities and the important measures improving recovery ratio.Plunger lift is one of the important measures solving low pressure, low yield and the slippage of water-beating gas well liquid, also be the water pumping gas production method that gas field is effective and economic and practical both at home and abroad at present, its principle be utilize plunger in oil pipe form solid interface between gas and liquid, reduce gas channelling and liquid falling, thus improve lifting efficiency.
Traditional plunger lift that Soviet Union's Sulige gas field generally adopts needs certain closed-in time, falls back to shaft bottom to make plunger.The longer closed-in time not only can affect gas well yield, but also the liquid that can order about in gas well pours into stratum, reduces the production efficiency of gas well.In addition, the sometimes up stroke of plunger is short, and do not arrive well head, up impact force is excessive sometimes, causes shaft mouth anti-blowout pipe to be destroyed.
Summary of the invention
The object of the present invention is to provide the split type plunger assembly of a kind of responding curve of well quantity-produced, well head buffer moves on in pit shaft by it, does not use GCU, makes Plunger Airlift Draining Gas Recovery simpler and more direct and efficient.
Concrete technical scheme of the present invention is as follows:
The split type plunger assembly of responding curve of well quantity-produced comprises down-hole buffering mechanism, split type plunger and well head buffer three part:
The pulling head of down-hole buffering mechanism is connected with connecting axle, and connecting axle is set with buffer spring and guide shell successively, and guide shell bottom connects the locking cover of taper, and locking cover outside is sleeved on guide shell bottom undergauge cylinder is located in device.Be located in device inwall and be provided with convex shoulder, outer wall is arranged with slips wing groove, wire circlip by pinned connection in groove.
Split type plunger is made up of plunger body and split seal.Plunger body fishing neck connects the inside support ring locked by pin.Be provided with the cone seal packing element of elastic skeleton and outer support ring to be separated by and to be sleeved on inside support ring outer wall.Sealing drum upper inside wall connects inside support ring, and undergauge closed hole upper surface, middle part connects speed limit baffle ring by pin.Split seal stretches into from sealing drum bottom outlet, the O-ring seal sealing undergauge closed hole on its top.
The input head of well head buffer connects main body by pin, fishing head and with its extension hang be connected and the slip sleeve fixed by snap ring on body outer wall.Well head buffer spring is enclosed within the connecting rod of lower body part, and connecting rod bottom connects trip rod.
When apparatus of the present invention are produced, plunger body and split seal are combined into airtight overall plunger in shaft bottom, utilize the thrust of air-flow that gas and liquid are lifted to well head, and not needing increases control head.When lifting is close to well head, well head buffer clashes into overall plunger and causes its split, makes both fall to shaft bottom and is again combined into overall plunger.The present invention can, under responding curve of well quantity-produced condition, utilize gas well self-energy to move back and forth in oil pipe, and property performance period lifts liquid, enhances productivity; The closing well restriction that conventional plunger is produced can be broken through, get rid of shaft bottom hydrops, reduce hydrops to the impact of gas flow, increase gas well gas production.
Accompanying drawing explanation
Fig. 1 a is down-hole buffering mechanism schematic diagram in the split type plunger assembly of responding curve of well quantity-produced.
Fig. 1 b, 1c are that in the split type plunger assembly of responding curve of well quantity-produced, down-hole buffering mechanism is thrown in and sets schematic diagram.
Fig. 2 is split type plunger schematic diagram in the split type plunger assembly of responding curve of well quantity-produced.
Fig. 3 is well head buffer schematic diagram in the split type plunger assembly of responding curve of well quantity-produced.
Fig. 4 is the up stage schematic diagram of the split type plunger assembly of responding curve of well quantity-produced.
Fig. 5 is responding curve of well quantity-produced split type plunger assembly descending phase schematic diagram.
Detailed description of the invention
Further illustrate referring to figs. 1 through 5 pairs of embodiments of the invention:
Embodiment:
The split type plunger assembly of responding curve of well quantity-produced comprises down-hole buffering mechanism, split type plunger and well head buffer three part:
Down-hole buffering mechanism by pulling 1, buffer spring 2, connecting axle 3, guide shell 4, be located in device 5, locking cover 6, wire circlip 8 and bearing pin 7 and form; Pulling 1 is threaded "T"-shaped connecting axle 3, connecting axle 3 is set with successively buffer spring 2 and guide shell 4, the expanding barrel in guide shell 4 top is arranged with two ellipse holes, guide shell 4 bottom is threaded the locking cover 6 of taper, and locking cover 6 outside is that suit guide shell 4 bottom undergauge cylinder is located in device 5; Be located in device 5 inwall and be provided with convex shoulder, outer wall is arranged with slips wing groove, and wire circlip 8 is connected in groove by bearing pin 7.
Split type plunger is made up of the split seal 17 of plunger body and sugarcoated haws string-like; Cylindric fishing neck 9 and inside support ring 10 screwed connection of plunger body, and locked by pin; Be provided with two cone seal packing elements 12 of elastic skeleton 11, outer support ring 13 is separated by and is sleeved on inside support ring 10 outer wall; Sealing drum 15 upper inside wall screwed connection inside support ring 10, undergauge closed hole upper surface, middle part connects speed limit baffle ring 14 by pin; Split seal 17 stretches into from sealing drum 15 bottom outlet, and the O-ring seal 16 on its top seals undergauge closed hole.
Well head buffer by throwing in 18, pin 19, fishing head 20, snap ring 21, slips 22, main body 23, well head buffer spring 24 and trip rod 25 form; Throw in 18 and connect main body 23 by pin 19, fishing head 20 and with its extension hang be connected and the slips 22 fixed by snap ring 21 is enclosed within main body 23; Well head buffer spring 24 is enclosed within the connecting rod of main body 23 bottom, connecting rod bottom screwed connection trip rod 25.
Input and the manufacturing process of the split type plunger assembly of responding curve of well continuous seepage are as follows:
1. throw in
Down-hole buffering mechanism is thrown in by steel wire operation:
As shown in Fig. 1 b, 1c, before construction, the press-in of two wire circlips 8 is located in device 5 slips wing groove, makes to be located in the device 5 slips wing and be in the state of tightening up (being less than pipe aperture), to ensure that it is unblocked when passing through oil pipe.A pulling special delivery tool of 1 connection, is transferred by piano wire uniform speed slow, on during planned well deep location, carries steel wire, make the crotch of wire circlip 8 stretch into tubing coupling; Steel wire is carried in continuation, and wire circlip 8 is departed from and is located in device 5 slips wing groove, the slips wing flicks, and then transfers steel wire and makes the slips wing embed in tubing coupling; Under hit delivery tool string, locking cover 6 is fallen into and is located in below device 5 inwall convex shoulder, namely down-hole buffering mechanism is successfully located in the wellbore.Meanwhile, special delivery tool pin is cut off, and departs from pulling 1, trips out piano wire and delivery tool string, and down-hole buffering mechanism is thrown in and set successfully.
Utilize gas production wellhead to switch valve and throw in split type plunger:
After closing cellar control gate, christmas tree pressure release, opens test valve, with strong magnetic, split type plunger is put into christmas tree, closes test valve, slowly opens by-pass valve control, above the down-hole buffering mechanism that split type plunger relies on deadweight to drop down onto in pit shaft.
Well head buffer is thrown in by steel wire operation:
As shown in Figure 3, when well head buffer is descending, slips 22 is retracted, arrive pit shaft and close to well head time, above carry steel wire, make main body 23 relatively slips 22 move upward, strut slips 22, make it be engaging on oil pipe; After loosening steel wire completely, more suddenly on carry, the disconnected pin 19 of shake, propose to throw in 18, input work completes.
2. produce
Plunger is up:
After all devices of the split type plunger of responding curve of well continuous seepage are thrown in and are installed, opening well and making production.Now, plunger body and split seal 17 are at shaft bottom seal combination integrally plunger, and gassy and liquid in its both sides and cylinder, form oil pipe packing face.Pressure recover below overall plunger to a certain extent after, promote it and fluid column is up, the hydrops in pit shaft discharged.
Plunger is descending:
After overall plunger and well head buffer bump against, trip rod hits split seal 17 25 times, makes it separate with plunger body, and split seal 17 and plunger body move downward all under gravity.Because split seal 17 is solid rigid bodies, decrease speed is fast, first drops down onto on down-hole buffering mechanism, plunger body then limited speed gear ring 14 to affect falling speed slower.After plunger body falls and clashes into split seal 17, be again combined into airtight overall plunger, rely on gas well energy to start the circulation of next cycle, namely the present invention utilizes gas well self-energy to move back and forth in oil pipe, and performance period lifts liquid.
Claims (2)
1. the split type plunger assembly of responding curve of well quantity-produced, is characterized in that this device comprises down-hole buffering mechanism, split type plunger and well head buffer three part:
The pulling head (1) of down-hole buffering mechanism is connected with connecting axle (3), connecting axle (3) is set with successively buffer spring (2) and guide shell (4), guide shell (4) bottom connects the locking cover (6) of taper, and locking cover (6) outside is sleeved on guide shell (4) bottom undergauge cylinder is located in device (5); Be located in device (5) inwall and be provided with convex shoulder, outer wall is arranged with slips wing groove, and wire circlip (8) is connected in groove by bearing pin (7);
Split type plunger is made up of plunger body and split seal (17); Plunger body fishing neck (9) connects the inside support ring (10) locked by pin; Be provided with the cone seal packing element (12) of elastic skeleton (11) and outer support ring (13) to be separated by and to be sleeved on inside support ring (10) outer wall; Sealing drum (15) upper inside wall connects inside support ring (10), and undergauge closed hole upper surface, middle part connects speed limit baffle ring (14) by pin; Split seal (17) stretches into from sealing drum (15) bottom outlet, O-ring seal (16) the sealing undergauge closed hole on its top;
The input head (18) of well head buffer connects main body (23) by pin (19), fishing head (20) and with its extension hang be connected and be enclosed within main body (23) by the slips (22) that snap ring (21) is fixing; Well head buffer spring (24) is enclosed within the connecting rod of main body (23) bottom, and connecting rod bottom connects trip rod (25).
2. the split type plunger assembly of responding curve of well quantity-produced as claimed in claim 1, when it is characterized in that this device is produced, plunger body and split seal (17) are combined into airtight overall plunger in shaft bottom, utilize the thrust of air-flow that gas and liquid are lifted to well head; When lifting is close to well head, well head buffer clashes into overall plunger and causes its split, makes both fall to shaft bottom and is again combined into overall plunger, utilize gas well self-energy to move back and forth in oil pipe, and property performance period lifts liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210346985.4A CN103670337B (en) | 2012-09-18 | 2012-09-18 | Split plunger device for continuous production without closing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210346985.4A CN103670337B (en) | 2012-09-18 | 2012-09-18 | Split plunger device for continuous production without closing well |
Publications (2)
| Publication Number | Publication Date |
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| CN103670337A CN103670337A (en) | 2014-03-26 |
| CN103670337B true CN103670337B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210346985.4A Active CN103670337B (en) | 2012-09-18 | 2012-09-18 | Split plunger device for continuous production without closing well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653712A (en) * | 2018-12-27 | 2019-04-19 | 西南石油大学 | A kind of high-angle wells and horizontal wells plunger lift system |
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| CN104358546B (en) * | 2014-11-12 | 2017-02-15 | 中国石油天然气股份有限公司 | Underground movable automatic intermittent water lifting tool |
| CN104806229B (en) * | 2015-04-01 | 2017-07-18 | 西南石油大学 | Plunger lift water pumping gas production production logging system and its control method |
| CN105201817B (en) * | 2015-10-15 | 2018-09-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Without the split type plunger of pedestal and liquid discharging gas producing technique |
| CN105604525A (en) * | 2015-12-16 | 2016-05-25 | 中国石油天然气股份有限公司 | Multi-stage plunger gas lift device and process for combined pipe column |
| CN105952421B (en) * | 2016-06-28 | 2018-09-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of split type plunger steel wire pumping equipment |
| CN106014346B (en) * | 2016-06-30 | 2018-06-01 | 中国石油天然气股份有限公司 | Method and device for water drainage and gas production by speed string matched with plunger gas lift |
| CN107313750B (en) * | 2017-06-08 | 2023-08-11 | 中国石油天然气集团有限公司 | Plunger gas lift drain |
| CN109184624B (en) * | 2018-11-13 | 2024-01-26 | 中国石油化工股份有限公司 | Well-closing-free type continuous lifting plunger drainage and extraction device and construction method |
| CN110332108B (en) * | 2019-08-05 | 2024-04-19 | 宋艳艳 | Split type plunger device for continuous automatic liquid discharge |
| CN111101883A (en) * | 2019-12-16 | 2020-05-05 | 中国石油天然气股份有限公司 | Underground buffering seating device suitable for horizontal well plunger gas lift and working method thereof |
| CN111058803B (en) * | 2019-12-16 | 2023-08-22 | 中国石油天然气股份有限公司 | Plunger gas lift drainage gas production device for combined pipe column and drainage gas production method thereof |
| CN116066025B (en) * | 2021-12-27 | 2024-03-08 | 中国石油天然气集团有限公司 | Plunger clamping device |
| CN117449804B (en) * | 2023-12-25 | 2024-03-19 | 克拉玛依新科澳石油天然气技术股份有限公司 | Mechanical self-paraffin removal device and paraffin removal method |
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| CN103670337A (en) | 2014-03-26 |
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