CN105545255A - Novel oil-field long-acting water-exclusion-oil-exploiting pipe column - Google Patents
Novel oil-field long-acting water-exclusion-oil-exploiting pipe column Download PDFInfo
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- CN105545255A CN105545255A CN201511013574.3A CN201511013574A CN105545255A CN 105545255 A CN105545255 A CN 105545255A CN 201511013574 A CN201511013574 A CN 201511013574A CN 105545255 A CN105545255 A CN 105545255A
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- oil
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- 238000012856 packing Methods 0.000 claims abstract description 32
- 239000003129 oil well Substances 0.000 claims abstract description 18
- 239000010985 leather Substances 0.000 claims description 39
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 210000004907 gland Anatomy 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000005987 sulfurization reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 19
- 238000010276 construction Methods 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000007717 exclusion Effects 0.000 abstract description 4
- 244000309464 bull Species 0.000 abstract 2
- 238000013461 design Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 241000283216 Phocidae Species 0.000 description 6
- 238000007689 inspection Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 230000037361 pathway Effects 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention belongs to the technical field of oil-field long-acting water exclusion oil exploiting, and particularly relates to a novel oil-field long-acting water-exclusion-oil-exploiting pipe column. The novel oil-field long-acting water-exclusion-oil-exploiting pipe column comprises an oil pipe (1), an oil well pump (2), a tail pipe (5) and a bull plug (6), wherein the oil pipe (1), the oil well pump (2), the tail pipe (5) and the bull plug (6) are sequentially connected from top to bottom, and a specially-made valve (3) and a long-acting water-exclusion-oil-exploiting packer (4) are further sequentially connected between the oil well pump (2) and the tail pipe (5) from top to bottom. According to the pipe column, it is achieved that setting, sub releasing and producing are completed through one pipe column, normal oil exploitation is not influenced in the packing period, and the anti-backflow function is achieved in the pump detecting period; when operation in a well shaft is required, the unblocked performance of the well shaft can be guaranteed only by salvaging the long-acting water-exclusion-oil-exploiting packer through a special tool, the construction procedure is greatly simplified, and construction efficiency is improved.
Description
Technical field
The present invention relates to oil field long-acting every the field of adopting, being particularly a kind ofly applicable to cased hole completion and the reverse-filling novel oilfield of the water outlet of reservoir top and sleeve pipe run-down place water outlet is long-acting every adopting tubing string.
Background technology
Along with the continuity of oil field development time, because of reasons such as corrosion, down-hole casing occurs that cover is broken successively, cause stratum and oil reservoir UNICOM, have impact on oil field and normally develops even pollution water source, stratum welding, added up to surpass 20,000 muzzles break well to current PetroChina Company Limited..
The technique comparatively commonly used for the broken well of cover has casing patching, chemical plugging, secondary well cementation, packer every adopting, wherein packer, convenient construction, cost simple every excavating technology low accounts for that the broken well of cover administers more than 80%.
At present for mainly containing two kinds every the technique of adopting, one is adopt traditional Y111, Y211, Y341 etc. are conventional is that the routine of master is every excavating technology every adopting packer, in this type of technique, packer is many is directly connected on flow string lower end, employing screw thread is rigidly connected, in oil recovery process flow string in well in bending or manufacturing process string creep easily cause packer to lose efficacy, once any one down-hole annex such as oil well pump goes wrong must trip out tubing string by deblocking packer, find in application that the packer of the type repeatedly often causes the crimp of packer setting section every adopting, seriously corrosion-damaged, operating mode is deteriorated and causes successively shortening every the cycle of adopting even losing efficacy, therefore overall period of validity is short, for artificial bottom of a well distance liquid level distance more than the oil well of more than 20m and the well of artificial bottom of a well operating mode poor (there are settling sand or small falling object in shaft bottom) inapplicable.; It two be the long-lives such as Y141, Y453, Y445 every adopting packer is that main long-life is every excavating technology, in this type of technique, packer enters to set under needing supporting special setting tool in advance, then enter down after flow string cornice intubate carries out docking and normally produce, adopt special tool to carry out brill mill when needing to trip out, complicated construction technique, cost are high.
Existing patent family product is as Water-isolation oil production packer ZL200520141928.8 etc., although can top water exclusion be realized, but reverse-filling function can not be realized after trip-out, cause and overlap tear water and enter pit shaft and pollute stratum, existing defects in technique to again entering down packer setting every adopting in work progress at trip-out deblocking packer.Therefore, need that to develop a kind of novel oilfield long-acting every excavating technology badly.
Summary of the invention
The object of this invention is to provide a kind of novel oilfield long-acting every adopting tubing string, this tubing string achieves one-trip string and completes and set, give up, produce, normal oil recovery is not affected during packing, during inspection pump, there is reverse-filling function, special tool is adopted to salvage the long-acting smoothness every adopting packer and can ensure pit shaft when needing wellbore operations, greatly simplifie working procedure, improve efficiency of construction.
The technical scheme that the present invention solves the employing of its technical problem is: a kind of novel oilfield is long-acting every adopting tubing string, it comprises the oil pipe, oil well pump, tail pipe, extremely stifled connected successively from top to bottom, it is characterized in that: be also connected with special valve and long-acting every adopting packer between oil well pump and tail pipe from top to bottom in turn.
Described special valve comprises pole cap, normal dog, push rod of pushing the ball, draining pin, special valve top connection, special valve center tap, valve ball, ball-handling snap, valve cover body, valve seat, special valve lower contact;
Special valve center tap top is connected with special valve top connection, special valve lower contact is connected with bottom special valve center tap, mechanism of pushing the ball is provided with in the cavity of special valve top connection, special valve top connection top is extended on mechanism top of pushing the ball, valve ball is provided with in special valve center tap, valve ball is fixed on valve cover body top by ball-handling snap, valve seat is had bottom valve cover body, the diameter of valve ball is less than valve cover body internal diameter, be greater than valve seat middle through-hole internal diameter, the side, middle part of special valve top connection is also provided with the oil leak hole being communicated with outer chamber in special valve top connection, oil leak hole is by the shutoff of draining pin.
Pole cap of pushing the ball, normal dog and push rod of pushing the ball is comprised in described mechanism of pushing the ball, push rod of pushing the ball is placed in the cavity of special valve top connection, push rod of pushing the ball is connected with the internal thread of pole cap bottom inside by external screw thread then outside top, pole cap bottom outside is provided with normal dog, and special valve top connection inside top has blind hole.
Described special valve center tap lower end inner wall has internal thread, the upper end outer wall of special valve lower contact has external screw thread, special valve center tap and special valve lower contact are threaded connection, special valve lower contact upper end inwall has internal thread, valve cover body is connected with the internal thread of special valve lower contact upper end inwall by the external screw thread of its outer wall, there is the step of clamping valve seat, between the upper end internal thread that valve seat is connected to special valve lower contact and step below the upper end internal thread of special valve lower contact.
Described long-acting every adopting that packer comprises packer top connection, intubate, fishing sleeve, packing element, spacer ring, central tube, gear gland, upper cone, locking pin, slips, spring, slip sleeve, lower cone, packer center tap, starts shear pin, sets steel ball, setting ball seat, shear pin of giving up, leather cup, connector, sliding sleeve urceolus, locking steel ball, sliding sleeve, center, back-moving spring, packer lower contact, plug; Described packer top connection is connected with intubate upper end, is socketed with central tube outside the intubate first half; Be positioned on the lower position of packer top connection, intubate, packing element, spacer ring and gear gland are socketed on central tube from top to bottom successively, and described intubate is connected with central tube; In gear gland, the external cylindrical surface of cylindrical hole and upper cone is spacing mutually, the lower end of upper cone and slip sleeve clamping, and slip sleeve is built with slips, and the outer wall of described slips is provided with groove, and groove is built with spring, and inner cylinder face and the lower cone external cylindrical surface of slip sleeve are spacing mutually; Be connected with locking pin between upper cone and central tube, the cone point of described upper cone is relative with the cone point of lower cone; Described lower cone is socketed on the inner side of packer center tap upper end, be connected with startup shear pin between lower cone and packer center tap simultaneously, the lower end of central tube is connected with packer center tap, packer center tap is connected with intubate, the intubate inwall at packer center tap place is fixed with setting ball seat by shear pin of giving up, and packer center tap extenal fixation has leather cup; Described packer center tap lower end is connected with sliding sleeve urceolus by connector, and be socketed with sliding sleeve in sliding sleeve urceolus, sliding sleeve is provided with sliding sleeving hole, and sliding sleeving hole is built with locking steel ball; The described lower end of sliding sleeve urceolus is connected with the upper end of center, and the lower end of center is connected with packer lower contact, and the sliding sleeve chamber be positioned at inside center above sliding sleeve lower end and packer lower contact is provided with back-moving spring, and the lower end of described intubate is connected with plug; Setting ball seat in intubate is provided with and sets steel ball.
The inner side of described packing element, spacer ring and gear gland is provided with the packing element overcoat be socketed on central tube, and the upper end of described upper cone is connected in the lower end of packing element overcoat and keeps off between gland, is provided with sealing mat between described central tube and packing element overcoat.
Sealing ring is provided with between described lower cone and packer center tap;
Sealing ring is equipped with between described central tube and lower cone, between packer center tap and central tube;
Sealing ring is provided with between described setting ball seat and intubate;
Sealing ring is provided with between described sliding sleeve urceolus and sliding sleeve.
The lower end of described described intubate is threaded with plug;
Described packer center tap lower end is threaded with between connector; The lower end of described central tube is threaded with between packer center tap;
The described upper end of sliding sleeve urceolus is threaded with the lower end of connector, and the described lower end of sliding sleeve urceolus is connected with the threaded upper ends of center;
The lower end of described center is threaded with packer lower contact.
Fixed by the first attachment screw between described intubate and central tube; Fixed by the second attachment screw between described packer center tap and intubate; Described leather cup is fixed on outside packer center tap by leather cup skeleton; Be threaded between leather cup skeleton with packer center tap; Described leather cup sulfuration is at the outer wall of leather cup skeleton.
Be connected with anti-loosing screw between described packer center tap and leather cup skeleton, described leather cup skeleton outside screw is connected with sheath.
The invention has the beneficial effects as follows:
1, adopt backward flowing preventing device and long-acting every adopting packer Integrated design first, and have devised the special valve with liquid, pressure transmission function, final and oil field rod-type pumping unit optimum organization, achieve one-trip string to complete and set, give up, produce, greatly simplifie working procedure, improve efficiency of construction;
2, this tubing string adopt steel ball to control setting of packer and give up, intubate controls that backward flowing preventing device opens and closes, sucker rod controls the commutation of special valve, achieve packer setting, lower floor and oil pipe passage UNICOM, pump to exploit and carry out step by step, improve and be constructed into power;
3, this tubing string devises the protection of slips annular space first, forming seal cavity by leather cup and packing element (after setting) makes liquid in slips and pit shaft isolate, significantly improve the working environment of slips, after causing long-term work, still can reduce process pipe string chance card machine rate by easy slide;
4, this technique adopts multiple step format to salvage mode, wherein long-actingly to trip out with process pipe string every adopting packer upper part (top connection+intubate), lower part adopts conventional Fishing Tools to coordinate with fishing sleeve preset in advance, and the later stage that can realize packer smoothly salvages, and greatly reduces salvaging difficulty.
Accompanying drawing explanation
Below in conjunction with embodiment accompanying drawing, the present invention is further described.
Fig. 1 is that a kind of novel oilfield is long-acting every adopting tubing string schematic diagram;
Fig. 2 is special valve arrangement schematic diagram;
Fig. 3 is long-acting every adopting packer construction schematic diagram.
In figure: 1, oil pipe; 2, oil well pump; 3, special valve; 4, long-acting every adopting packer; 5, tail pipe; 6, plug;
301, pole cap; 302, normal dog; 303, to push the ball push rod; 304, draining pin; 305, special valve top connection; 306, special valve center tap; 307, valve ball; 308, ball-handling snap; 309, valve cover body; 310, valve seat; 311, special valve lower contact;
401, packer top connection; 402, intubate; 403, fishing sleeve; 404, packing element overcoat; 405, the first attachment screw; 406, sealing mat; 407, packing element; 408, spacer ring; 409, central tube; 410, gland is kept off; 411, upper cone; 412, locking pin; 413, slips; 414, spring; 415, slip sleeve; 416, lower cone; 417, packer center tap; 418, shear pin is started; 419, steel ball is set; 420, setting ball seat; 421, to give up shear pin; 422, the second attachment screw; 423, leather cup; 424, sheath; 425, anti-loosing screw; 426, leather cup skeleton; 427, connector; 428, sliding sleeve urceolus; 429, locking steel ball; 430, sliding sleeve; 431, center; 432, back-moving spring; 433, packer lower contact; 434, plug.
Detailed description of the invention
Embodiment 1
This novel oilfield as Fig. 1 is long-acting every adopting shown in tubing string schematic diagram, it comprises the oil pipe 1, oil well pump 2, the tail pipe 5, extremely stifled 6 that connect successively from top to bottom, it is characterized in that: be also connected with special valve 3 and long-acting every adopting packer 4 between oil well pump 2 and tail pipe 5 from top to bottom in turn.
As shown in Figure 2, special valve 3 comprise pole cap 301, normal dog 302, push rod 303 of pushing the ball, draining pin 304, special valve top connection 305, special valve center tap 306, valve ball 307, ball-handling snap 308, valve cover body 309, valve seat 310, special valve lower contact 311.
Special valve center tap 306 top is connected with special valve top connection 305, special valve lower contact 311 is connected with bottom special valve center tap 306, mechanism of pushing the ball is provided with in the cavity of special valve top connection 305, special valve top connection 305 top is extended on mechanism top of pushing the ball, valve ball 307 is provided with in special valve center tap 306, valve ball 307 is fixed on valve cover body 309 top by ball-handling snap 308, valve seat 310 is had bottom valve cover body 309, the diameter of valve ball 307 is less than valve cover body 309 internal diameter, be greater than valve seat 310 middle through-hole internal diameter, therefore when mechanism of pushing the ball collided descending contact with valve ball 307 after promotion valve ball 307 press off snap 308 of controlling ball and fall on valve seat 310, now special valve 3 is equivalent to conventional standing valve, the side, middle part of special valve top connection 305 is also provided with the oil leak hole being communicated with outer chamber in special valve top connection 305, oil leak hole is by draining pin 304 shutoff.
As shown in Figure 3, long-actingly comprise packer top connection 401 every adopting packer 4, intubate 402, fishing sleeve 403, packing element 407, spacer ring 408, central tube 409, gear gland 410, upper cone 411, locking pin 412, slips 413, spring 414, slip sleeve 415, lower cone 416, packer center tap 417, start shear pin 418, set steel ball 419, setting ball seat 420, to give up shear pin 421, leather cup 423, connector 427, sliding sleeve urceolus 428, locking steel ball 429, sliding sleeve 430, center 431, back-moving spring 432, packer lower contact 433, parts such as plug 434 grade, described packer top connection 401 is connected with intubate 402 upper end, is socketed with central tube 409 outside intubate 402 first half, be positioned on the lower position of packer top connection 401, fishing sleeve 403, packing element 407, spacer ring 408 and gear gland 410 are socketed on central tube 409 from top to bottom successively, and described fishing sleeve 403 is connected with the upper end of central tube 409, in gear gland 410, the external cylindrical surface of cylindrical hole and upper cone 411 is spacing mutually, the upper end clamping of gear gland 410 and upper cone 411, the lower end of upper cone 411 and slip sleeve 415 clamping, slip sleeve 415 is built with slips 413, and the outer wall of described slips 413 is provided with groove, groove is built with spring 414, and inner cylinder face and lower cone 416 external cylindrical surface of slip sleeve 415 are spacing mutually, the lower end of slip sleeve 415 is connected with lower cone 416, be connected with locking pin 412 between upper cone 411 and central tube 409, the cone point of described upper cone 411 is relative with the cone point of lower cone 416, the present embodiment can realize auto-lock function, namely relies on lower cone 416, slips 413 and the self-locking angle between upper cone 411 with slips 413 to coordinate, simplifies self-locking technique, greatly reduces tool design cost and self-locking mechanism failure probability.Described lower cone 416 is socketed on the inner side of packer center tap 417 upper end, be connected with between lower cone 416 and packer center tap 417 simultaneously and start shear pin 418, the lower end of central tube 409 is connected with packer center tap 417, packer center tap 417 is connected with intubate 402, intubate 402 inwall at packer center tap 417 place is fixed with setting ball seat 420 by shear pin 421 of giving up, packer center tap 417 extenal fixation has leather cup 423, this packer devises leather cup 423 in slips 413 bottom first, after packing element 407(sets) and leather cup 423 between form seal cavity slips 413 isolated with liquid in pit shaft, therefore the working environment of slips 413 is significantly improved, still packer chance card machine rate can be reduced by easy slide after causing long-term work.Described packer center tap 417 lower end is connected with sliding sleeve urceolus 428 by connector 427, and be socketed with sliding sleeve 430 in sliding sleeve urceolus 428, sliding sleeve 430 is provided with sliding sleeving hole, and sliding sleeving hole is built with locking steel ball 429; The lower end of described sliding sleeve urceolus 428 is connected with the upper end of center 431, the lower end of center 431 is connected with packer lower contact 433, the sliding sleeve chamber be positioned at inside center 431 above sliding sleeve 430 lower end and packer lower contact 433 is provided with back-moving spring 432, and the lower end of described intubate 402 is connected with plug 434; Setting ball seat 420 in intubate 402 is provided with and sets steel ball 419.
This is long-acting has carried out Integrated design every adopting packer 4 for integral type by packer, intubate, backward flowing preventing device, achieves one-trip string and completes and set, give up, produce, greatly simplifie construction technology.Only this packer need be connected in oil extraction in oil field tubing string, its tubing string can be designed to (from well head to down-hole): oil pipe+oil well pump+the design is long-acting every adopting packer+tail pipe+extremely stifled, and its Central Plains pump standing valve needs to be replaced by special valve (can overcurrent, overvoltage).Oil pipe is suppressed, when pressure sets to packer startup during 7MPa ~ 10MPa, when pressure to packer during 18MPa ~ 20MPa is given up then pressure release, now adopt intubate 402 to control backward flowing preventing device to open and close, normal oil recovery can be realized, this packer achieves packer setting and lower floor and exploits substep and carry out, and improves and is constructed into power.This packer indoor design fishing sleeve 403, packer complete give up after all stay in pit shaft from fishing sleeve less than 403, drag for lance when needing to adopt when salvaging conventional reversible box cupling and salvage the later stage that fishing sleeve 403 can be caught smoothly to realize packer and salvage.
Embodiment 2
On the basis of embodiment 1, push the ball in mechanism and comprise pole cap 301 of pushing the ball, normal dog 302 and push rod 303 of pushing the ball, push rod 303 of pushing the ball is placed in the cavity of special valve top connection 305, push rod 303 of pushing the ball is connected with the internal thread of pole cap 301 bottom inside by external screw thread then outside top, pole cap 301 bottom outside is provided with normal dog 302, and special valve top connection 305 inside top has blind hole.
When pole cap 301 is not by collision, the top of special valve top connection 305 is extended in pole cap 301 upper end, pole cap 301 is bounced back by the normal dog 302 of descending its bottom outside of compressing of collision, now pole cap 301, to push the ball push rod 303, normal dog 302 is descending together until the lower surface of pole cap 301 contacts the blind hole end face of special valve top connection 305 inside top, normal dog 302 enters in the lower channel of special valve top connection 305 upper blind bore, push rod 303 of pushing the ball in the process contacts rear promotion valve ball 307 and presses off snap 308 of controlling ball and fall on valve seat 310 with valve ball 307, now special valve 3 is equivalent to conventional standing valve.
Special valve center tap 306 lower end inner wall has internal thread, the upper end outer wall of special valve lower contact 311 has external screw thread, special valve center tap 306 is threaded connection with special valve lower contact 311, special valve lower contact 311 upper end inwall has internal thread, valve cover body 309 is connected with the internal thread of special valve lower contact 311 upper end inwall by the external screw thread of its outer wall, there is the step of clamping valve seat 310, between the upper end internal thread that valve seat 310 is connected to special valve lower contact 311 and step below the upper end internal thread of special valve lower contact 311.
Embodiment 3:
On the basis of embodiment 1, the inner side of described packing element 407, spacer ring 408 and gear gland 410 is provided with the packing element overcoat 404 be socketed on central tube 409.The upper end of described upper cone 411 is connected in the lower end of packing element overcoat 404 and keeps off between gland 410.Described central tube 409 and be provided with sealing mat 406 between packing element 407, lower cone 416 and packer center tap 417; Between described lower cone 416 and packer center tap 417, between described central tube 409 and lower cone 416, between packer center tap 417 and central tube 409, be equipped with sealing ring; Sealing ring is equipped with between setting ball seat 420 and intubate 402, between sliding sleeve urceolus 428 and sliding sleeve 430.Fixed by the first attachment screw 405 between described fishing sleeve 403 and central tube 409; Fixed by the second attachment screw 22 between described packer center tap 417 and intubate 402.The lower end of described intubate 402 with between plug 434, packer center tap 417 lower end with between connector 427, the lower end of central tube 409 is all connected by screw thread with between packer lower contact 433 with between packer center tap 417, between the upper end of sliding sleeve urceolus 428 and the lower end of connector 427, between the lower end of sliding sleeve urceolus 428 and the upper end of the center 431 and lower end of center 431.Described leather cup 423 is fixed on outside packer center tap 417 by leather cup skeleton 26; Be threaded between leather cup skeleton 26 with packer center tap 417; The sulfuration of described leather cup 423 is at the outer wall of leather cup skeleton 26.Anti-loosing screw 25 is also connected with between described packer center tap 417 and leather cup skeleton 26.Also be threaded outside leather cup skeleton 26 sheath 24.
This long-acting assembling process every adopting packer 4: first then spring 414 is put into slips 413 outer wall groove enters slip sleeve 415 hole (being generally 3) from slip sleeve 415 pressure measurement, and then upper cone 411(is generally 2 ~ 3) one end puts into slip sleeve 415 other end and is hung on packing element overcoat 404 outer wall, finally inserted by the central tube 409 installing sealing mat 406; First load onto sealing ring at lower cone 416 inside and outside wall then to insert packer center tap 417(sealing ring and install) in screw in again and start shear pin 418, then central tube 409 inserted lower cone 416 and be threaded with packer center tap 417, locking pin 412 is screwed in after now adjusting the position of upper cone 411, then gear gland 410, packing element 407, spacer ring 408, fishing sleeve 403 is penetrated successively from packing element overcoat 404 top, then the position adjusting fishing sleeve 403 screws in the first attachment screw 405, now completes upper part and installs.
In setting ball seat 420 outer wall groove, first install sealing ring then put into intubate 402 inside, the screwed hole adopting special tool to be pushed into setting ball seat 420 aligns with the screwed hole of intubate 402, then screws in shear pin 421 of giving up; Packer top connection 401 is threaded with intubate 402, now completes mid portion and install.
First load onto sealing ring in sliding sleeve urceolus 428 inside, then the bottom that is threaded with connector 427, top is threaded with center 431, in the hole of sliding sleeve 430, load locking steel ball 429(be generally 2 ~ 3) then put into back-moving spring 432 after penetrate center 431, sliding sleeve urceolus 428, connector 427 inwall successively, finally packer lower contact 433 is threaded with center 431, now completes lower part and install.
Finally mid portion is inserted upper part inside, after the screwed hole of intubate 402 aligns with packer center tap 417 screwed hole, screw in shear pin 421 of giving up again; First by the sulfuration of leather cup skeleton 26(leather cup 423 at leather cup skeleton 26 outer wall) to be inserted in from packer center tap 417 bottom after be threaded with packer center tap 417, then screw in anti-loosing screw 25, finally sheath 24 be threaded with leather cup skeleton 26; Again connector 427 is threaded with packer center tap 417; The last steel ball 419 that will set from top is put into intubate 402 and is namely completed all installation processes.
Working mechanism of the present invention is following (with 5
1/
2it is example that the cover of 〞 oil pipe completion breaks well construction):
1, normal lower brill
This packer is mainly used in the broken well top water exclusion of oil field cover, its completion tubular column can be designed to (from well head to down-hole): oil pipe+oil well pump+the design is long-acting every adopting packer+tail pipe+extremely stifled, its Central Plains pump standing valve needs to be replaced by special valve (can overcurrent, overvoltage), is drilled into design attitude connected pipes and hangs under normal.
2, set packer
Connect pump truck to suppress in oil pipe, when pressurization reaches 7MPa ~ 10MPa, long-acting every adopting the startup shear pin 418 of packer 4, locking pin 412 cuts off successively, pressure continues to rise, pressure promote lower cone 416 and successively promote slips 413, slip sleeve 415, upper cone 411, gear gland 410 up, meanwhile packing element 407 is compressed, after slips 413 supporting sleeve is firm, packing element 407 continues to be compressed formation top seal, leather cup 423 forms bottom self sealss, and therefore slips is in seal cavity.Continue to suppress when pressure is cut off more than shear pin 421 of giving up during 18MPa ~ 20MPa, set steel ball 419 and fall into plug 434 top with setting ball seat 420, now ball seat pressure release shows that instrument sets completely and gives up.
3, normal oil recovery and inspection pump
Lower oil well pump, sucker rod touch pump, now the pole cap 301 of special valve 3 is bounced back by the descending compressing normal dog 302 of collision, now pole cap 301, push rod 303 of pushing the ball, normal dog 302 are descending together until the lower surface of pole cap 301 contacts special valve top connection 305 upper blind bore end face, normal dog 302 enters in the lower channel of special valve top connection 305 upper blind bore, push rod 303 of pushing the ball in the process contacts rear promotion valve ball 307 and presses off snap 308 of controlling ball and fall on valve seat 310 with valve ball 307, now special valve 3 is equivalent to conventional standing valve; Normal oil recovery can be started after production wellhead and oil pumper are installed, the now eyelet alignment of long-acting sliding sleeve urceolus 428 and sliding sleeve 430 every adopting packer 4, bottom oil layer, through forming feed pathway between this hole and oil well pump, separates normal oil recovery completely with packer top.
When needing inspection pump, lay down oil pumper and production wellhead, trip out sucker rod, in oil pipe, freely deliver a special little latus rectum weighted lever clash into the draining pin 304 cutting off special valve 3, in lift pipe string process, in oil pipe, residual oil can be back in sleeve pipe by this oil leak hole, then flow string is tripped out, be fixed on sleeve pipe by slips 413 because packer has set therefore remainder, therefore the second attachment screw 422 is cut off, packer top connection 401, intubate 402 is separated with other parts, tripping out tubing string is: long-acting packer top connection 401 and the intubate 402 every adopting packer 4 of oil pipe 1+ oil well pump 2+ special valve 3+, now the long-acting locking steel ball 429 every adopting packer 4 loses the inner support of intubate 402, sliding sleeve 430 is promoted up under the effect of back-moving spring 432, feed pathway is closed, even if also can not be communicated with under High Pressure Difference, flow string can be tripped out and carry out pump detection and workover, packer is not communicated with up and down and has reverse-filling function in the process.
Inspection pump terminates rear lower flow string: oil pipe 1+ oil well pump 2+ special valve 3(must change draining pin 304)+long-acting packer top connection 401 and intubate 402 every adopting packer 4, the long-acting intubate 402 every adopting packer 4 makes sliding sleeve 430 descending until the eyelet alignment of sliding sleeve urceolus 428 and sliding sleeve 430 forms feed pathway again by pushing away locking steel ball 429, can start again to recover the oil.
4, packer is salvaged
When packer salvaged by needs, first according to inspection pump program, sucker rod, flow string are tripped out, then F73mm instrument oil pipe+F73mm box cupling is adopted to drag under lance salvages (reversible), carrying on after fishing spear catches the long-acting fishing sleeve 403 every adopting packer 4 drives packing element overcoat 404, upper cone 411, slip sleeve 415 up successively, simultaneously slips 413, lower cone 416 bounce backs deblocking, and upper lifting pipe post can complete the salvaging of this packer.
To sum up, the present invention be directed to the broken well top water exclusion of oil field cover and the Special packer that designs, this packer is combined with oil field rod-type pumping unit oil production technology, one-trip string can be realized complete and set, give up, produce, normal oil recovery and the supporting backward flowing preventing device of Integrated design is not affected during packing, during inspection pump, there is reverse-filling function, need to adopt special tool to carry out salvaging during wellbore operations.Concrete advantage comprises as follows:
The first, packer involved in the present invention is integral type, has carried out Integrated design by packer, intubate, backward flowing preventing device, achieves one-trip string and completes and set, give up, produce, greatly simplifie construction technology.
The second, this packer adopts the stepped design starting shear pin and shear pin bearing strength of giving up to set (7MPa ~ 10MPa) and give up (18MPa ~ 20MPa) to the startup controlling packer, adopt intubate mechanical type to control backward flowing preventing device to open and close, achieve packer setting and lower floor to exploit substep and carry out, improve and be constructed into power.
Three, this packer devises leather cup in slips bottom first, between packing element (after setting) and leather cup, form seal cavity makes liquid in slips and pit shaft isolate, therefore significantly improve the working environment of slips, after causing long-term work, still can reduce packer chance card machine rate by easy slide.
Four, this packer indoor design fishing sleeve, packer complete give up after all stay in pit shaft below fishing sleeve, drag for lance when needing to adopt when salvaging conventional reversible box cupling and salvage the later stage that fishing sleeve can be caught smoothly to realize packer and salvage.
Five, the self-locking of this packer relies on lower cone, slips and the self-locking angle between upper cone with slips to coordinate, because this simplify self-locking technique, greatly reducing tool design cost and self-locking mechanism failure probability.
The part do not described in detail in present embodiment belongs to the known conventional means of the industry, does not describe one by one here.More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (10)
1. a novel oilfield is long-acting every adopting tubing string, it comprise connect successively from top to bottom oil pipe (1), oil well pump (2), tail pipe (5), dead stifled (6), it is characterized in that: between oil well pump (2) and tail pipe (5), be also connected with special valve (3) and long-acting every adopting packer (4) from top to bottom in turn.
2. a kind of novel oilfield according to claim 1 is long-acting every adopting tubing string, it is characterized in that: described special valve (3) comprises pole cap (301), normal dog (302), push rod of pushing the ball (303), draining pin (304), special valve top connection (305), special valve center tap (306), valve ball (307), ball-handling snap (308), valve cover body (309), valve seat (310), special valve lower contact (311);
Special valve center tap (306) top is connected with special valve top connection (305), special valve center tap (306) bottom is connected with special valve lower contact (311), mechanism of pushing the ball is provided with in the cavity of special valve top connection (305), special valve top connection (305) top is extended on mechanism top of pushing the ball, valve ball (307) is provided with in special valve center tap (306), valve ball (307) is fixed on valve cover body (309) top by ball-handling snap (308), valve seat (310) is arranged at valve cover body (309) bottom, the diameter of valve ball (307) is less than valve cover body (309) internal diameter, be greater than valve seat (310) middle through-hole internal diameter, the side, middle part of special valve top connection (305) is also provided with the oil leak hole being communicated with the interior outer chamber of special valve top connection (305), oil leak hole is by draining pin (304) shutoff.
3. a kind of novel oilfield according to claim 2 is long-acting every adopting tubing string, it is characterized in that: in described mechanism of pushing the ball, comprise pole cap of pushing the ball (301), normal dog (302) and push rod of pushing the ball (303), push rod (303) of pushing the ball is placed in the cavity of special valve top connection (305), push rod (303) of pushing the ball is connected with the internal thread of pole cap (301) bottom inside by external screw thread then outside top, pole cap (301) bottom outside is provided with normal dog (302), and special valve top connection (305) inside top has blind hole.
4. a kind of novel oilfield according to claim 2 is long-acting every adopting tubing string, it is characterized in that: described special valve center tap (306) lower end inner wall has internal thread, the upper end outer wall of special valve lower contact (311) has external screw thread, special valve center tap (306) and special valve lower contact (311) are threaded connection, special valve lower contact (311) upper end inwall has internal thread, valve cover body (309) is connected with the internal thread of special valve lower contact (311) upper end inwall by the external screw thread of its outer wall, there is below the upper end internal thread of special valve lower contact (311) step of clamping valve seat (310), between the upper end internal thread that valve seat (310) is connected to special valve lower contact (311) and step.
5. a kind of novel oilfield according to claim 1 is long-acting every adopting tubing string, it is characterized in that: described long-actingly comprise packer top connection (401) every adopting packer (4), intubate (402), fishing sleeve (403), packing element (407), spacer ring (408), central tube (409), gear gland (410), upper cone (411), locking pin (412), slips (413), spring (414), slip sleeve (415), lower cone (416), packer center tap (417), start shear pin (418), set steel ball (419), setting ball seat (420), to give up shear pin (421), leather cup (423), connector (427), sliding sleeve urceolus (428), locking steel ball (429), sliding sleeve (430), center (431), back-moving spring (432), packer lower contact (433), plug (434), described packer top connection (401) is connected with intubate (402) upper end, is socketed with central tube (409) outside intubate (402) first half, be positioned on the lower position of packer top connection (401), intubate (403), packing element (407), spacer ring (408) and gear gland (410) are socketed on central tube (409) from top to bottom successively, and described intubate (403) is connected with central tube (409), the external cylindrical surface of gear gland (410) interior cylindrical hole and upper cone (411) is spacing mutually, the lower end of upper cone (411) and slip sleeve (415) clamping, slip sleeve (415) is built with slips (413), the outer wall of described slips (413) is provided with groove, groove is built with spring (414), and inner cylinder face and lower cone (416) external cylindrical surface of slip sleeve (415) are spacing mutually, be connected with locking pin (412) between upper cone (411) and central tube (409), the cone point of described upper cone (411) is relative with the cone point of lower cone (416), described lower cone (416) is socketed on the inner side of packer center tap (417) upper end, be connected with between lower cone (416) and packer center tap (417) simultaneously and start shear pin (418), the lower end of central tube (409) is connected with packer center tap (417), packer center tap (417) is connected with intubate (402), intubate (402) inwall at packer center tap (417) place is fixed with setting ball seat (420) by shear pin of giving up (421), and packer center tap (417) extenal fixation has leather cup (423), described packer center tap (417) lower end is connected with sliding sleeve urceolus (428) by connector (427), and be socketed with sliding sleeve (430) in sliding sleeve urceolus (428), sliding sleeve (430) is provided with sliding sleeving hole, and sliding sleeving hole is built with locking steel ball (429), the lower end of described sliding sleeve urceolus (428) is connected with the upper end of center (431), the lower end of center (431) is connected with packer lower contact (433), the sliding sleeve chamber that center (431) inner side is positioned at sliding sleeve (430) lower end and packer lower contact (433) top is provided with back-moving spring (432), and the lower end of described intubate (402) is connected with plug (434), setting ball seat (420) in intubate (402) is provided with and sets steel ball (419).
6. a kind of novel oilfield according to claim 5 is long-acting every adopting tubing string, it is characterized in that: the inner side of described packing element (407), spacer ring (408) and gear gland (410) is provided with the packing element overcoat (404) be socketed on central tube (409), the upper end of described upper cone (411) is connected in the lower end of packing element overcoat (404) and keeps off between gland (410), is provided with sealing mat (406) between described central tube (409) and packing element overcoat (404).
7. a kind of novel oilfield according to claim 5 is long-acting every adopting tubing string, it is characterized in that: be provided with sealing ring between described lower cone (416) and packer center tap (417);
Sealing ring is equipped with between described central tube (409) and lower cone (416), between packer center tap (417) and central tube (409);
Sealing ring is provided with between described setting ball seat (420) and intubate (402);
Sealing ring is provided with between described sliding sleeve urceolus (428) and sliding sleeve (430).
8. a kind of novel oilfield according to claim 5 is long-acting every adopting tubing string, it is characterized in that: the lower end of described described intubate (402) is threaded with plug (434);
Described packer center tap (417) lower end is threaded with between connector (427); The lower end of described central tube (409) is threaded with between packer center tap (417);
The upper end of described sliding sleeve urceolus (428) is threaded with the lower end of connector (427), and the lower end of described sliding sleeve urceolus (428) is connected with the threaded upper ends of center (431);
The lower end of described center (431) is threaded with packer lower contact (433).
9. a kind of novel oilfield according to claim 5 is long-acting every adopting tubing string, it is characterized in that: fixed by the first attachment screw (405) between described intubate (403) and central tube (409); Fixed by the second attachment screw (422) between described packer center tap (417) and intubate (402); Described leather cup (423) is fixed on packer center tap (417) outside by leather cup skeleton (26); Be threaded between leather cup skeleton (26) with packer center tap (417); The outer wall of described leather cup (423) sulfuration in leather cup skeleton (26).
10. a kind of novel oilfield according to claim 5 is long-acting every adopting tubing string, it is characterized in that: be connected with anti-loosing screw (425) between described packer center tap (417) and leather cup skeleton (426), described leather cup skeleton (426) outside screw is connected with sheath (424).
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| CN107013190A (en) * | 2017-06-03 | 2017-08-04 | 中国石油化工股份有限公司 | Steam flooding well flow string and implementation |
| CN110410031A (en) * | 2019-06-14 | 2019-11-05 | 中国石油天然气股份有限公司 | It returns and is inserted every adopting THE REPRODUCTION TECHNOLOGY WITH tubing string and method at the top of a kind of casing damaged well expandable casing patching |
| CN111561296A (en) * | 2020-04-30 | 2020-08-21 | 中国石油天然气股份有限公司 | Underground switch device and method for controlling pressure in shaft |
| CN113047805A (en) * | 2021-06-01 | 2021-06-29 | 东营市海天自动化工程有限责任公司 | Self-sealing type oil field packer for oil field exploitation |
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| CN110410031B (en) * | 2019-06-14 | 2021-09-28 | 中国石油天然气股份有限公司 | Casing damage well expansion pipe patching top back-plugging separate-mining production-recovery complex production process pipe column and method |
| CN111561296A (en) * | 2020-04-30 | 2020-08-21 | 中国石油天然气股份有限公司 | Underground switch device and method for controlling pressure in shaft |
| CN113047805A (en) * | 2021-06-01 | 2021-06-29 | 东营市海天自动化工程有限责任公司 | Self-sealing type oil field packer for oil field exploitation |
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