CN107893642A - A kind of application method of underground work metal packer - Google Patents

A kind of application method of underground work metal packer Download PDF

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Publication number
CN107893642A
CN107893642A CN201711067647.6A CN201711067647A CN107893642A CN 107893642 A CN107893642 A CN 107893642A CN 201711067647 A CN201711067647 A CN 201711067647A CN 107893642 A CN107893642 A CN 107893642A
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CN
China
Prior art keywords
sealing
metal
hypocentrum
central tube
working assemblies
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CN201711067647.6A
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Chinese (zh)
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CN107893642B (en
Inventor
蔡薇
苏佳
袁芳
肖英亮
徐洪源
李倩
张晓岩
姚佳何
郭洪波
霍建军
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蔡薇
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Priority to CN201711067647.6A priority Critical patent/CN107893642B/en
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Publication of CN107893642B publication Critical patent/CN107893642B/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/126Packers; Plugs with fluid-pressure-operated elastic cup or skirt

Abstract

The present invention relates to a kind of application method of underground work metal packer.Its technical scheme is:The outer wall connection sealing steel bushing of top connection, upper centrum sealing piston are arranged on the central tube and seal the annular space between steel bushing, connected on the outside of the middle and lower part of upper centrum sealing piston by setting shear pin and snap set, and snap is installed in snap set;The bottom of the upper centrum sealing piston is conical head, it is engaged by conical head and metal sealing working assemblies, the bottom of the metal sealing working assemblies is engaged with hypocentrum, and the inwall of hypocentrum passes through hypocentrum composite sealing ring and basepipe seal.Beneficial effect is:Dependable performance of the present invention, it is resistant to more than 450 degree of high temperature, as a result of the stepped construction of open type, namely use metal sealing working assemblies, overcome prior art expansion amplitude it is small the problem of, also overcome the problem of packer that existing elastomeric material or metal are combined with elastomeric material is present.

Description

A kind of application method of underground work metal packer

Technical field

The present invention relates to a kind of underground work device and method, a kind of more particularly to underground work metal packer makes Use method.

Background technology

In oil-gas field development field, packer is to implement oil production by layer, seperated layer water injection, separate stratum fracfturing, acidifying or machinery card The Important Components of the underground injection-production technology such as stifled, packer specifically refers to flexible potted component, and insulates various chis whereby Annular space between writing brush post and well and between tubing string, and completely cut off payzone, (note) liquid, the underground of protection sleeve pipe are produced with control Instrument.Packer is used for being layered in petroleum production engineering, and oil channel is designed with packer, and when setting, piston bush is up, recovers the oil Passage is opened;After setting, upper stressor layer is acted on dummy piston, pushes up packing element, makes deblocking pin from shearing force;Solution Feng Shi, deblocking pin is cut by the frictional force of packing element and sleeve pipe, piston bush is descending, closes oil channel.

Most packer sealing cylinder is typically prepared by elastic composite, can be divided into pressure type, self-sealing and It is compound etc..Compression packer in pressure type is one kind the most universal, such as Y341, K344, Y211 and Y221 model Packer, be mainly made up of upper lower contact, packing element sealing mechanism, setting mechanism, its seal operation principle is:Under packer Well puts tubing string and the slips of setting mechanism is engaged in be formed on internal surface of sleeve pipe and is supported, simultaneously to behind precalculated position by above putting Under the Action of Gravity Field of tubing string, top connection promotes packing element compression, the diameter of packing element is become big, so as to insulate oil sets annular space. By being conformed into the sealing to oil sets annular space to the extruding of the both ends of packing element, but when pressure is excessive, the decrement of packing element It is bigger, easily it is damaged to.And the applying working condition of packing element is extremely complex and harsh:High pressure, high temperature, in oil In medium while also by the erosion of hydrogen sulfide, steam, acid etc..In this environment, elastic composite will occur Oil swell, aging, phenomena such as being excessively crosslinked, the hardness of material is caused to rise, intensity decline, flexibility decrease, cracking resistance mouth increase energy Power is significantly reduced.Therefore early damage is just easily produced when being intended for single use, causes sealing to fail.In oil-gas field development, The mining depth of Oil/gas Well is more and more deeper, with the increase of oil gas well depth, the operating ambient temperature of packing element, pressure Increase therewith, chemical corrosivity is also stronger, therefore, just the packing element of packer is proposed adapt to the higher of above-mentioned bad working environments will Ask.

China Patent Publication No. CNI 356452A, patent name are《Packer for high-temp thermal recovery》, it discloses a kind of gold Belong to forced seal structure, its dependable performance, be resistant to 450 DEG C of high temperature, but because what is sealed is that swollen alliteration opens metal wave Line pipe, it is close to internal surface of sleeve pipe and reach sealing function, and rugosity is in before metal bellows distending, the problem of it is present It is:Tube wall can not possibly be made thick, and the diameter of swollen head must be close to the casing inner diameter sealed, therefore expansion amplitude is small, be not suitable for Inner wall coarse, the sleeve pipe of poor dimensional precision.

China Patent Publication No. CN103015943A, patent name are《A kind of metal sealing mechanism of packer》, by cylinder, Swollen head and compression spring composition.One section of cylinder endoporus is in round platform hole, on the external cylindrical surface of cylinder, is formed with two groups of quantity phases With, parallel to axis circumferentially equally distributed gaps, from the round platform hole bottom of cylinder, bottom surface extends upwardly in one group of gap; Each gap in another group of gap is all located at the center in adjacent two gap of previous group respectively, and under the round platform hole away from cylinder Bottom surface certain distance rises, and extends to the other end of cylinder.Swollen head is the round estrade with centre bore.In the endoporus of cylinder, if It is equipped with compression spring.Coordinated by the Wedged of swollen head and cylinder, the cylindrical column diameter of metallic cylinder is swollen, to oil jacket annular space Play firm, tight packing effect.Sealing mechanism employs metal material, and its heatproof, pressure-resistant and corrosion resistance are all notable More than the packing element sealing on common packer, it is particularly suitable for high temperature, high-pressure oil-gas well.But its problem of still having, is:It is right The requirement of cylinder is very high, and the cooperation of cylinder and swollen head easily caused because there is junk can not clamping the problem of, and then The problem of causing that packing can not be realized, also a problem are that expansion amplitude is small, it is difficult to meet field requirement.

China Patent Publication No. CN206299367U, patent name are《A kind of metal sealing packer》, including top connection, Gauge cylinder, expansion tube and lower contact;The upper and lower ends of the expansion tube are connected with top connection and lower contact respectively;The expansion Pipe is by the heavy wall section positioned at middle part and is symmetricly set on two thin segments of both sides above and below heavy wall section and forms, heavy wall section and thin-walled Section is integral type structure, and the wall thickness of heavy wall section is more than thin segment wall thickness;The gauge cylinder shares two, is slidably mounted on institute respectively State two thin segments of expansion tube;Auxiliary rubber sealing ring is additionally provided with the heavy wall section of the expansion tube.The metal sealing seals Every device with expansion of metal seal based on, supplemented by rubber seal, seal section expansion rate is high, and it is small that tubing string enters well risk, sets rear pressure-resistant Poor ability is strong, Sealing period length, and high temperature resistant property is good, applied widely, can reduce operating cost, reduces operating risk.But It is that the problem of it is present is:Due to being sealed using metal bound rubber, so, still deposited without thoroughly solution rubber seal The problem of.

The content of the invention

The purpose of the present invention is aiming at drawbacks described above existing for prior art, there is provided a kind of underground work is insulated with metal The application method of device, not only solve high temperature resistant, it is corrosion-resistant and pressure-resistant the problem of, and avoid there is junk and can not clamping The problem of.

The application method for a kind of underground work metal packer that the present invention mentions, it is characterized in that comprising the following steps:

First, assembling underground work metal packer, by central tube(15)Between upper and lower joint, and in top connection(1) External screw thread connection sealing steel bushing(3), in sealing steel bushing(3)Inside install centrum sealing piston(5), and pass through setting shear pin(16) It is connected to sealing steel bushing(3)The snap set of bottom(6)On;In central tube(15)Middle part be provided with metal sealing working assemblies (9), upside and upper centrum sealing piston(5)Coordinate, downside and hypocentrum(10)Coordinate, after the completion of position to be insulated under lower going-into-well Put;

2nd, when setting, suppressed by wellhead assembly, highly pressurised liquid passes through inlet opening(17)Into sealing steel bushing(3)With central tube (15)Between annular space, centrum sealing piston in promotion(5)Shear pin will be unsealed(12)Cut, and move down, due to hypocentrum (10)Taper be less than upper centrum sealing piston(5)The taper of the lower vertebra head of bottom, so promoting metal sealing working assemblies (9)It is displaced outwardly and is brought into close contact with casing wall, now, due to upper centrum sealing piston(5)Outer wall be provided with gingival cyst of mucous gland in the newborn line, with lock Spring(7)Gingival cyst of mucous gland in the newborn step coordinate latched position, realize packing;

When the 3rd, unsealing, rotated by wellhead assembly, due to locking nail(13)Shearing force be more than deblocking shear pin(12)Shearing Power, unseal shear pin(12)Cut, central tube(15)Rotation is realized, due to hypocentrum(10)It is installed between lower contact locking Nail(13), hypocentrum(10)With lower contact synchronous rotary and move down so that metal sealing working assemblies(9)Under loosening Move, and then make metal sealing working assemblies(9)Shrink, so, metal sealing working assemblies(9)Retract in situ, realize dress The solution put, which is sealed up, to be carried.

Preferably, above-mentioned central tube(15)With hypocentrum(10)Between be provided with deblocking shear pin(12), lower contact(14)With under Centrum(10)Between be provided with locking nail(13), and the central tube(15)With lower contact(14)Between be designed as left-hand thread, pass through rotation Turn central tube(15), shear pin will be unsealed(12)Cut, simultaneously because lower contact(14)Provided with locking nail(13), realize central tube (15)Rotation, and then make metal sealing working assemblies(9)Shrink, snap(7)Return, upper centrum sealing piston(5)Upwards It is mobile, final metal sealing working assemblies(9)Retract in situ.

Preferably, above-mentioned hypocentrum(10)Taper be less than upper centrum sealing piston(5)The taper of the lower vertebra head of bottom.

The beneficial effects of the invention are as follows:Dependable performance of the present invention, more than 450 degree of high temperature is resistant to, as a result of opening The stepped construction of formula, that is, using metal sealing working assemblies, overcome prior art expansion amplitude it is small the problem of, The problem of packer that existing elastomeric material or metal are combined with elastomeric material is present is overcome, is sealed and lived by upper centrum Plug moves down, and promotes and is moved outside metal sealing working assemblies, real until being bonded closely with casing wall, then by snap latched position Now insulate;During deblocking, by the rotation of central tube, drive hypocentrum and lower contact to move down, make metal sealing working assemblies loose Dynamic return, until being fully retracted, so as to which whole metal packer is above carried to pithead position;

Further, since the structure of the opening seal operation ring design in metal sealing working assemblies is novel and ingenious, Ke Yishi Extend out or shrink while existing multigroup opening seal operation ring, and the internal diameter for the seal operation ring that is open is different, realize with outside The perfect cooperation expanded and shunk, when its is setting, fully achieve sealing, can withdraw completely it is achieved thereby that all-metal envelope during deblocking Every meeting the requirement of the deep-well and heavy oil wells in oil exploitation;And avoid prior art there is junk and can not clamping The problem of;

The present invention answers by using metal sealing working assemblies made of all-metal and upper centrum composite sealing ring 8 and hypocentrum Sealing ring 11 and ring gasket 2 are closed, whole device all using metal parts, can overcome lacking for existing rubber packer Fall into, certainly, in terms of high temperature resistant and pressure, the packer that is combined also superior to rubber with metal.

Brief description of the drawings

Accompanying drawing 1 is the structural representation of the present invention;

Accompanying drawing 2 is the structural representation when present invention realizes packing;

Accompanying drawing 3 is that the part of metal sealing working assemblies is scattered schematic diagram;

In upper figure:Top connection 1, ring gasket 2, sealing steel bushing 3, combined bidirectional sealing ring 4, upper centrum sealing piston 5, snap Set 6, snap 7, upper centrum composite sealing ring 8, metal sealing working assemblies 9, hypocentrum 10, hypocentrum composite sealing ring 11, Unseal shear pin 12, locking nail 13, lower contact 14, central tube 15, setting shear pin 16, inlet opening 17.

Embodiment

The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein preferred real Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.

Embodiment 1, a kind of underground work metal packer that the present invention mentions, its technical scheme are:Including top connection 1st, ring gasket 2, sealing steel bushing 3, combined bidirectional sealing ring 4, upper centrum sealing piston 5, snap set 6, snap 7, upper centrum Composite sealing ring 8, metal sealing working assemblies 9, hypocentrum 10, hypocentrum composite sealing ring 11, deblocking shear pin 12, locking nail 13rd, lower contact 14, central tube 15, setting shear pin 16, the upper end of the central tube 15 are connected with top connection 1, the outer wall of top connection 1 Connection sealing steel bushing 3, upper centrum sealing piston 5 are arranged on the central tube 15 and seal the annular space between steel bushing 3, and upper centrum is close Seal on the outside of the middle and lower part of piston 5 and be connected by setting shear pin 16 with snap set 6, snap 7 is installed in snap set 6;The upper centrum The bottom of sealing piston 5 is conical head, is engaged by conical head and metal sealing working assemblies 9, the metal sealing The bottom of working assemblies 9 is engaged with hypocentrum 10, and the inwall of hypocentrum 10 is by hypocentrum composite sealing ring 11 with Heart pipe 15 seals, and is provided with deblocking shear pin 12 and locking nail 13 in the outer wall of hypocentrum 10, and hypocentrum 10 passes through 13 Hes of locking nail Screw thread is connected with lower contact 14, is connected by unsealing shear pin 12 with central tube 15.

Referring to the drawings 1 and 2, metal sealing working assemblies 9 of the invention include nine groups of opening seal operation rings, using gold Category material is made, for example stainless steel or alloy material are made, wherein, the outer wall section of first group of opening seal operation ring is cone Shape structure, is provided with the first connection bump in the downside of first group of opening seal operation ring, second group of opening seal operation ring it is outer Wall section is right-angled trapezium, and the upper surface of right-angled trapezium is provided with the second connecting groove, with first group of opening seal operation ring Connection bump coordinates, and the lower surface of right-angled trapezium is provided with the second connection bump, the outer wall section of the 3rd group of opening seal operation ring For the loop configuration with unfilled corner, and upper surface sets the 3rd connecting groove, and lower surface is provided with the 3rd connection bump;4th opening sealing Standard annulus is respectively adopted in building ring, the 5th opening seal operation ring, the 6th opening seal operation ring;7th opening seal operation Ring is identical with the structure of the 3rd opening seal operation ring, and installation direction is opposite;8th opening seal operation ring and the second opening are close The structure of envelope building ring is identical, and installation direction is opposite;The structure of 9th opening seal operation ring and the first opening seal operation ring Identical, installation direction is opposite.

Wherein, the 3rd group of opening seal operation ring, the 4th opening seal operation ring, the 5th opening seal operation ring, the 6th The internal diameter of opening seal operation ring and the opening seal operation rings of seven is identical;Second group of opening seal operation ring and the 8th opening The internal diameter of seal operation ring is identical, and more than the internal diameter of the 4th opening seal operation ring;First group of opening seal operation ring It is identical with the internal diameter of the 9th opening seal operation ring, and more than the internal diameter of second group of opening seal operation ring, so make nine groups to open Mouthful seal operation ring can form a whole structure, be internally formed the shape that a section is inclined-plane and coordinate with upper hypocentrum, Outside forms circular configuration and forms sealing and packing function with casing-contact.

The upper end of snap set 6 is connected with sealing steel bushing 3, and the snap 7 in snap set 6 is provided with gingival cyst of mucous gland in the newborn step, passes through gingival cyst of mucous gland in the newborn The gingival cyst of mucous gland in the newborn line of step and the upper outer wall of centrum sealing piston 5 coordinates, and centrum sealing piston 5 is fixed on relevant position.

Deblocking shear pin 12 is provided between central tube 15 and hypocentrum 10, locking nail is provided between lower contact 14 and hypocentrum 10 13, and left-hand thread is designed as between the central tube 15 and lower contact 14, by pivot pipe 15, deblocking shear pin 12 is cut, Simultaneously because lower contact 14 is provided with locking nail 13, the rotation of central tube 15 is realized, and then receive metal sealing working assemblies 9 Contracting, the return of snap 7, upper centrum sealing piston 5 moved up, and final metal sealing working assemblies 9 are retracted original position.

The shearing force of above-mentioned locking nail 13 is more than the shearing force of deblocking shear pin 12;Preferably, the taper of above-mentioned hypocentrum 10 Less than the taper of the lower vertebra head of the upper bottom of centrum sealing piston 5.

The bottom interior wall of above-mentioned hypocentrum 10 is provided with trapezoidal left-hand thread, is connected by trapezoidal left-hand thread with the outer wall of central tube 15, When rotating forward central tube, deblocking shear pin 12 is cut, and hypocentrum 10 is driven to rotate(Moreover, hypocentrum and the gravity of lower contact are made With making it rotate and move down and easily realize), due to being installed on locking nail 13, hypocentrum 10 between hypocentrum 10 and lower contact With lower contact synchronous rotary and move down, metal sealing working assemblies 9 and then bounce back.

A kind of application method for underground work metal packer that the present invention mentions, comprises the following steps:

First, assembling underground work metal packer, between central tube 15 is arranged on into upper and lower joint, and in 1 outer spiral shell of top connection Line connection sealing steel bushing 3, installs centrum sealing piston 5, and be connected to sealing steel by setting shear pin 16 in sealing steel bushing 3 Cover on the snap set 6 of 3 bottoms;Metal sealing working assemblies 9 are provided with the middle part of central tube 15, upside is lived with the sealing of upper centrum Plug 5 coordinates, and downside coordinates with hypocentrum 10, after the completion of position to be insulated under lower going-into-well;

2nd, when setting, suppressed by wellhead assembly, because the bottom of underground work metal packer is provided with blind plugging(In figure not Show, be existing conventional techniques), highly pressurised liquid by inlet opening 17 enter sealing steel bushing 3 and central tube 15 between annular space, push away Dynamic upper centrum sealing piston 5 cuts deblocking shear pin 12, and moves down, because the taper of hypocentrum 10 seals less than upper centrum The taper of the lower vertebra head of the bottom of piston 5, so promoting metal sealing working assemblies 9 to be displaced outwardly and closely pasted with casing wall Close, now, because the outer wall of upper centrum sealing piston 5 is provided with gingival cyst of mucous gland in the newborn line, coordinate latched position with the gingival cyst of mucous gland in the newborn step of snap 7, it is real Now insulate;

When the 3rd, unsealing, rotated by wellhead assembly, because the shearing force of locking nail 13 is more than the shearing force of deblocking shear pin 12, solution Envelope shear pin 12 is cut, and central tube 15 realizes rotation, due to being installed on locking nail 13, hypocentrum between hypocentrum 10 and lower contact 10 and lower contact synchronous rotary and move down, moved down so that metal sealing working assemblies 9 loosen, and then make metal sealing Working assemblies 9 are shunk, and so, metal sealing working assemblies 9 are retracted original position, and the solution of realization device, which is sealed up, to be carried.

In addition, the structure of upper centrum composite sealing ring 8 and hypocentrum composite sealing ring 11 is as follows:Including one group of left becket With two groups of right beckets, left becket is clipped in the centre of right becket, and the left becket is connected with upper and lower centrum, Right becket is connected with central tube, realizes mechanical seal, avoids asking using service life existing for rubber seal is shorter Topic.

The present invention is by using metal sealing working assemblies made of all-metal and upper centrum composite sealing ring 8 and lower vertebra Bluk recombination sealing ring 11 and ring gasket 2, whole device all using metal parts, can overcome existing rubber packer Defect, certainly, in terms of high temperature resistant and pressure, the packer that is combined also superior to rubber with metal.

Embodiment 2, a kind of underground work metal packer that the present invention mentions, difference from Example 1 is this hair The metal sealing working assemblies 9 of bright use include seven groups of opening seal operation rings, and three groups of both sides are same as Example 1, in Between use one group of metal sealing working assemblies 9, and the length of middle metal sealing working assemblies 9 is more than other openings Seal operation ring, similarly solve the problems, such as to mention in embodiment 1, worked by using metal sealing made of all-metal Sub-assembly, the defects of existing rubber packer can be overcome, certainly, in terms of high temperature resistant and pressure, also superior to rubber and gold Belong to the packer combined;

Embodiment 3, a kind of underground work metal packer that the present invention mentions, difference from Example 1 is that the present invention adopts Metal sealing working assemblies 9 include five groups of opening seal operation rings, and two groups of both sides are same as Example 1, and centre is adopted With one group of metal sealing working assemblies 9, and the length of middle metal sealing working assemblies 9 is more than other opening sealings Building ring, similarly solve the problems, such as to mention in embodiment 1.

In addition, the center pipe outer wall in the side of snap 7, the raised line of a longitudinal direction can be installed on, during for unsealing, center The return of pipe rotation forces snap 7, is more beneficial for the return of centrum sealing piston 5, the metal sealing of top half is worked and combines Part 9 is easier return, so as to quickly reclaim whole underground work metal packer.

It is described above, only it is the part preferred embodiment of the present invention, any those skilled in the art may profit Equivalent technical scheme is changed or is revised as with the technical scheme of above-mentioned elaboration.Therefore, the technology according to the present invention Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.

Claims (3)

  1. A kind of 1. application method of underground work metal packer, it is characterized in that comprising the following steps:
    First, assembling underground work metal packer, by central tube(15)Between upper and lower joint, and in top connection(1) External screw thread connection sealing steel bushing(3), in sealing steel bushing(3)Inside install centrum sealing piston(5), and pass through setting shear pin(16) It is connected to sealing steel bushing(3)The snap set of bottom(6)On;In central tube(15)Middle part be provided with metal sealing working assemblies (9), upside and upper centrum sealing piston(5)Coordinate, downside and hypocentrum(10)Coordinate, after the completion of position to be insulated under lower going-into-well Put;
    2nd, when setting, suppressed by wellhead assembly, highly pressurised liquid passes through inlet opening(17)Into sealing steel bushing(3)With central tube (15)Between annular space, centrum sealing piston in promotion(5)Shear pin will be unsealed(12)Cut, and move down, due to hypocentrum (10)Taper be less than upper centrum sealing piston(5)The taper of the lower vertebra head of bottom, so promoting metal sealing working assemblies (9)It is displaced outwardly and is brought into close contact with casing wall, now, due to upper centrum sealing piston(5)Outer wall be provided with gingival cyst of mucous gland in the newborn line, with lock Spring(7)Gingival cyst of mucous gland in the newborn step coordinate latched position, realize packing;
    When the 3rd, unsealing, rotated by wellhead assembly, due to locking nail(13)Shearing force be more than deblocking shear pin(12)Shearing Power, unseal shear pin(12)Cut, central tube(15)Rotation is realized, due to hypocentrum(10)It is installed between lower contact locking Nail(13), hypocentrum(10)With lower contact synchronous rotary and move down so that metal sealing working assemblies(9)Under loosening Move, and then make metal sealing working assemblies(9)Shrink, so, metal sealing working assemblies(9)Retract in situ, realize dress The solution put, which is sealed up, to be carried.
  2. 2. the application method of underground work metal packer according to claim 1, it is characterized in that:The central tube (15)With hypocentrum(10)Between be provided with deblocking shear pin(12), lower contact(14)With hypocentrum(10)Between be provided with locking nail (13), and the central tube(15)With lower contact(14)Between be designed as left-hand thread, pass through pivot pipe(15), shear pin will be unsealed (12)Cut, simultaneously because lower contact(14)Provided with locking nail(13), realize central tube(15)Rotation, and then make metal sealing Working assemblies(9)Shrink, snap(7)Return, upper centrum sealing piston(5)Move up, final metal sealing work combination Part(9)Retract in situ.
  3. 3. the application method of underground work metal packer according to claim 1, it is characterized in that:The hypocentrum (10)Taper be less than upper centrum sealing piston(5)The taper of the lower vertebra head of bottom.
CN201711067647.6A 2017-11-03 2017-11-03 A kind of application method of underground work metal packer CN107893642B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003042486A3 (en) * 2001-11-12 2003-11-27 David Paul Brisco Collapsible expansion cone
CN203905893U (en) * 2014-06-19 2014-10-29 荆州市赛瑞能源技术有限公司 Hydraulic packer capable of being taken out
CN105239955A (en) * 2015-10-28 2016-01-13 中国石油天然气股份有限公司 Step-by-step unsealing anchor packer for gas well
US20160069151A1 (en) * 2014-09-10 2016-03-10 Baker Hughes Incorporated Interventionless method of setting a casing to casing annular packer
CN206144513U (en) * 2016-10-31 2017-05-03 天津汇铸石油设备科技有限公司 Hydraulic packer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003042486A3 (en) * 2001-11-12 2003-11-27 David Paul Brisco Collapsible expansion cone
CN203905893U (en) * 2014-06-19 2014-10-29 荆州市赛瑞能源技术有限公司 Hydraulic packer capable of being taken out
US20160069151A1 (en) * 2014-09-10 2016-03-10 Baker Hughes Incorporated Interventionless method of setting a casing to casing annular packer
CN105239955A (en) * 2015-10-28 2016-01-13 中国石油天然气股份有限公司 Step-by-step unsealing anchor packer for gas well
CN206144513U (en) * 2016-10-31 2017-05-03 天津汇铸石油设备科技有限公司 Hydraulic packer

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