CN108425653A - Gas well Operating Pressure wellhead assembly - Google Patents

Gas well Operating Pressure wellhead assembly Download PDF

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Publication number
CN108425653A
CN108425653A CN201810249621.1A CN201810249621A CN108425653A CN 108425653 A CN108425653 A CN 108425653A CN 201810249621 A CN201810249621 A CN 201810249621A CN 108425653 A CN108425653 A CN 108425653A
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CN
China
Prior art keywords
slips
preventer
gas well
operating pressure
wellhead assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810249621.1A
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Chinese (zh)
Inventor
杨颖辉
强会彬
周健
裕晓志
王大彪
陈伟林
隋凯
王欢
Original Assignee
杨颖辉
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 杨颖辉 filed Critical 杨颖辉
Priority to CN201810249621.1A priority Critical patent/CN108425653A/en
Publication of CN108425653A publication Critical patent/CN108425653A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • E21B19/00Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/16Connecting or disconnecting pipe couplings or joints
    • 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
    • E21B31/00Fishing for or freeing objects in boreholes or wells
    • E21B31/12Grappling tools, e.g. tongs or grabs
    • E21B31/20Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
    • 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
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • 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
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • E21B33/06Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers

Abstract

Gas well Operating Pressure wellhead assembly is related to petroleum machinery, includes the rack of the oil pipe elevating control component and fixed the two of the blowout prevention seal assembly of lower section and top(19), the blowout prevention seal assembly includes from bottom to top sequentially connected first ram preventer(2), closed hydraulic tongs(3), the second ram preventer(5), pressure release valve module(6), spray lubrication device(7)And annular preventer, the oil pipe elevating control component includes bottom end rail(8), master cylinder(10), intermediate transverse girder(12), fixed load-bearing slips(14), fixed anti-jack slips(15), travelling rotating jack-proof slips(16), upper beam(17), travelling lifting slips(18).The present invention have reasonable design, it is small, be readily transported and assemble, using and it is easy to operate, reliable operation, efficient and a large amount of artificial and equipment costs can be saved.

Description

Gas well Operating Pressure wellhead assembly
Technical field
The present invention relates to petroleum machineries, and in particular to it is a kind of no killing well, not pressure release, do not discharge medium in well under the premise of, The wellhead assembly of workover treatment with pressure is carried out to the natural gas well, shale gas well, coal bed gas well.
Background technology
Recent years large-scale development and the conventional and unconventional natural gas well newly gone into operation opened such as shale gas, coal bed gas well Begin to enter the first maintenance cycle, since domestic gas well is not equipped with down hole sleeve valve generally, the entire pit shaft in the overall process of operation It is filled with high pressure, high pressure gas sprays in well when to avoid well workover, therefore high-density slurry kill-job-must be selected normal in well workover Advise workover treatment or workover treatment with pressure.
The well killing fluid or high-density slurry that kill-job operation uses can push down high pressure gas in well, but well killing fluid or mud meeting It penetrates into stratum and closes microfissure, especially big, high-density slurry kill-job-is damaged to the natural gas well, especially shale gas well capacity After conventional workover treatment, the common natural gas well can lose 20% or more production capacity, and shale gas well may lose 50% or more production capacity, very Selection Operating Pressure is inevitable choice when completely losing gas deliverability to being thoroughly crushed to death, therefore repairing, and wouldn't have with pressure repair Well operations condition be typically chosen halt production shut-in well it is to be repaired.
When workover treatment with pressure, the interior blocking of the following tubular column string of downhole tool is world-class problem, is not solved suitably Method.
At present in gas well operation, some job requirements act the perforating gun of underground, and perforating gun outer diameter face is due to perforating bullet Exploding, it is irregular to cause, and inside and outside penetrating, traditional fishing lance voltage regulator tube technique can not complete such operation;External job service company Due to that can not fulfil assignment, can all select to avoid this well location operation;If the necessary operation of this well location, is generally made using kill-job Industry method can cause well location production capacity degradation.
Invention content
The technical problem to be solved by the present invention is to:There is provided one kind in no killing well, not pressure release, do not discharge medium premise in well Under, the wellhead assembly of workover treatment with pressure is carried out to the natural gas well, shale gas well, coal bed gas well.
Technical solution of the invention is:Gas well Operating Pressure wellhead assembly, including the blowout prevention seal assembly of lower section and The rack of the oil pipe elevating control component of top and fixed the two, the blowout prevention seal assembly include from bottom to top sequentially connected It is first ram preventer, closed hydraulic tongs, the second ram preventer, pressure release valve module, spray lubrication device, first annular anti- Spray apparatus, the second annular preventer, the oil pipe elevating control component include bottom end rail, master cylinder, intermediate transverse girder, fixed load-bearing card Watt, fixed anti-jack slips, travelling rotating jack-proof slips, upper beam, travelling lifting slips, fixed load-bearing slips and fixed anti-top are blocked It watt is from bottom to top connected in turn above the second annular preventer, master cylinder cylinder body is fixedly connected with bottom end rail, the work of master cylinder Stopper rod is fixedly connected with driving upper beam with upper beam and moves up and down, and move about rotating jack-proof slips and travelling lifting slips and upper beam It is fixedly connected.
The solution have the advantages that:Reasonable design of the present invention, it is small, be readily transported and assemble, use and operation side Just, reliable operation, efficient and a large amount of artificial and equipment costs can be saved.
It uses closed hydraulic tongs and has been used for out the downhole tool without interior blocking and tubing string;It is provided with spray in a device Lubricating arrangement, the device are located at lower annular preventer hereinafter, in operation when upper lifting pipe post string, and spray equipment can be to tubing string string list Face is sprayed water or oil, and friction coefficient and frictional force when tubular column string being made to pass through annular preventer glue core have to be declined by a relatively large margin, reduces Annular preventer glue core is worn, and avoids electrostatic accumulation;Two-stage decompression is carried out using upper and lower two annular preventers, it will be in well Pressure equalization improves the sealing reliability and service life of annular preventer at the pressure difference up and down of two-stage annular preventer; Chamber section constant-pressure liquid supply between two-stage annular preventer, the liquid segment can infiltrate column surface when playing lower tubular column, logical in tubing string Lubricating action from when crossing annular preventer glue core up and down, while the constant pressure liquid section can auxiliary seal mine gas.
Apparatus of the present invention can use a kind of certain workflow:Equipment high pressure lumen shackle with pressure-fishing lance voltage regulator tube technique, The tubular column string all without interior blocking including being risen out comprising downhole tool under with pressure condition gets around interior blocking problem, thoroughly solves Certainly without interior blocking tubular column string shop problem.
Apparatus of the present invention can use the closed hydraulic tongs in blowout prevention seal assembly to be dismantled step by step in device high pressure chest Body of perforating gun is taken out with fishing lance or dipper, has solved perforation hole rifle problem paragraph by paragraph, under production capacity caused by avoiding kill-job operation Drop problem.
Description of the drawings
Fig. 1 is the structural schematic diagram of blowout prevention seal assembly of the present invention and oil pipe elevating control components;
Fig. 2 is the structural schematic diagram of rack section of the present invention.
Specific implementation mode
As illustrated in fig. 1 and 2, gas well Operating Pressure wellhead assembly, including the blowout prevention seal assembly of lower section and the oil pipe of top The rack 19 of elevating control component and fixed the two, the blowout prevention seal assembly include from bottom to top sequentially connected first flashboard Preventer 2, closed hydraulic tongs 3, the second ram preventer 5, pressure release valve module 6, spray lubrication device 7 and annular preventer, The oil pipe elevating control component includes bottom end rail 8, master cylinder 10, intermediate transverse girder 12, fixed load-bearing slips 14, fixed anti-top card Watts 15, travelling rotating jack-proof slips 16, upper beam 17, travelling lifting slips 18, fixed load-bearing slips 14 and fixed anti-jack slips 15 are from bottom to top connected to 13 top of the second annular preventer in turn, and 10 cylinder body of master cylinder is fixedly connected with bottom end rail 8, master cylinder 10 piston rod is fixedly connected with driving upper beam 17 with upper beam 17 and moves up and down, travelling rotating jack-proof slips 16 and travelling lifting Slips 18 is fixedly connected with upper beam 17.
The annular preventer is connected and composed by first annular preventer 9 and the second annular preventer 13.
Water cavity short circuit 11 is equipped between 9 and second annular preventer 13 of the first annular preventer.
First ram preventer, 2 lower section is connect equipped with rotary flange 1 with well head.
Collar detecting device 4 is equipped between 3 and second ram preventer 5 of the closed hydraulic tongs.
The rack 19 is constituted by two sections be at least detachably connected.
19 bottom of the rack is connect equipped with hydraulic pressure stabilizer blade with ground.
The swing stabilizer blade 22 that the hydraulic pressure stabilizer blade includes fixing leg 20 and is hinged on by support arm 21 in rack.
Rotary flange is mounted on wellhead assembly bottom, and lower flange can freely revolve when with being connect by operation gas well mouth Turn, without rotary operation equipment complete machine, is conducive to the layout of working well, promotes operation convenience.
First ram preventer should include at least three layers of flashboard:Half envelope flashboard(Closing well when for there is tubing string in well), it is complete Seal flashboard(Closing well when in well without tubing string), shear ram(Occur to cut when the state of emergency when for there is tubing string in well Tubing string and closing well);Should also include one layer of safety slip flashboard in ram preventer to promote operation convenience and safety. Ram preventer can be three flashboards or four flashboards of an entirety, can also be connected by arbitrary 1-3 individual ram preventers It connects and is composed.
The effect of closed hydraulic tongs is to carry out shackle to the pipe fitting specified on working string in complete machine high pressure lumen, To complete the highly difficult unconventional Operating Pressure projects such as back-off with pressure, dismounting downhole tool with pressure, fishing lance voltage regulator tube;It is in shape with pressure The tubular column string all without interior blocking including being risen out under state comprising downhole tool gets around interior blocking problem, thoroughly solves without interior stifled Fill in the core work component of tubular column string shop problem.
Collar detecting device is the component of a detect operation tubing string diameter change, and rolling is pushed by constant hydraulic pressure Wheel group clamping operation tubing string, when the box cupling of working string is by detection device roller group, due to diameter become greatly by roller group to Outer promotion, the hydraulic pressure cavity pressure for turning off detection device rise.Detection device central processing unit acquires pressure oscillation data, passes through The amplitude of pressure rise judges that by roller group be box cupling or downhole tool(Diameter is than pipe box cupling bigger).In addition to roller group Contact detection method, collar detecting device can also select other structures form or operation principle form, such as electromagnetic eddy Contactless detection method etc..
Second ram preventer is mainly used for coordinating closed hydraulic tongs realization back-off with pressure, dismounting well with pressure in a device The functions such as lower tool, fishing lance voltage regulator tube, and used as back-up safety closing well preventer;Ram preventer should include at least one layer Flashboard:Blind rams, to complete shackle and upper lifting pipe post to ram preventer or more to working string in closed hydraulic tongs When, blowout prevention seal assembly high pressure chest is closed, top and the bottom are separated;To promote operation convenience and safety, in ram preventer Should also include one and half envelope flashboards.Ram preventer can be two flashboards of an entirety, can also be by arbitrary individually Ram preventer connection is composed.
The effect of pressure release valve module is one outlet being controllably opened and closed of setting in the middle part of operation device under pressure, can be under it After the arbitrary sealing blowout-preventing in portion closes shut-in well, the pressure inside blowout prevention seal assembly is discharged;Or complete setting oil in operation After pipe hanger shut-in well, the pressure of entire operation device under pressure inner cavity is discharged.Pressure release valve module should include an at least high pressure four-way(Or Threeway), the relief valve that surges(For remote control), a manual relief valve(For closing for a long time or the relief valve that surges It is closed when failure);To promote operation convenience and safety, pressure release valve module generally uses high pressure four-way, surges equipped with two Relief valve, two manual relief valves, extra branch can be used as carrying out safety backup, can also be used as balance manifold and use.
Spray lubrication device is the gas pressure of sealing well oil pipe and casing annulus in gas well operation upper lifting pipe post Power, the glue core of annular preventer needs the oil pipe surface tightly coated out, and the tubing string outer surface gone out from well is generally all It is dry, will produce severe friction between the two, and the right angle step of pipe box cupling is forced through glue core, glue core can be caused rapid Abrasion tearing consumption, reduces the glue core service life;And electrostatic is gathered on glue core, security risk is brought to operation.Spray lubrication device It can be while operation device under pressure upper lifting pipe post acts, to column surface spray lubrication liquid, according to operating environmental condition Difference, lubricating fluid can be water, anti-icing fluid or fluid, can reduce friction coefficient, reduce abrasion and glue core Splitting, And contribute to the release of electrostatic.
Annular blowout prevention is the primary seal part of device, is proposed out of well real by the two annular preventers when working string Existing dynamic sealing.In operation low pressure well, the two can be used alone to promote the convenience for replacing glue core;In operation high-pressure well When, the two can use simultaneously, realize two-stage decompression, reduce the attrition rate of each glue core.Two are used at the same time When annular preventer, two annular preventers may be constructed a closing chamber with water cavity short circuit between the two, to this chamber perseverance Pressure is for lubricating fluid(Water, anti-icing fluid, various fluid etc.)Rubbing for two annular preventer glue cores can be significantly improved in operation process Wiping state reduces abrasion;Spherical blow-out preventer is more reliable compared with gas medium to the sealing of water or other liquid, and the water in water cavity can Assistance seals air pressure in well and lubricates upper spherical blow-out preventer glue core when playing pipe operation, while spherical glue core is not easy to gather electrostatic; The presence of water cavity is easier to judge whether the closing pressure of two spherical blow-out preventers is reasonable;Pressure reduction with classification can reduce single spherical glue core Upper and lower pressure difference reduces spherical glue core abrasion.
The hypomere of master cylinder cylinder body is connected and fixed with bottom end rail in oil pipe elevating control component, the piston rod of master cylinder with it is upper Crossbeam is connected and fixed, and constitutes a telescopic closing frame shape.The upper end of master cylinder, bottom end rail in oil pipe elevating control component It is connected and fixed, is fixed with blowout prevention seal assembly flanged joint in the middle part of bottom end rail, oil pipe elevating control group with the epimere of complete machine frame Part, by master cylinder uplift force, the reaction force of lower pressure, ground, Huo Zhejing is reached by complete machine frame by this three groups of fixed points The gas well mouth that preventer seal assembly lower end is connected and fixed reaches in stratum.
Each slips is unidirectional self-lock type slips in oil pipe elevating control component.Two sets of stationary slips are installed on annular blowout prevention Device upper surface, effect are after clamping working string that tubing string fixation is motionless in the original location.Two sets of traveling slips are respectively arranged in The both sides up and down of upper beam after traveling slip clamping working string, can be driven by master cylinder and be made under stationary slip releasing orientation Industry tubing string moves up and down.The combination of two sets of traveling slips may be implemented one and hang a card working method, device can be significantly increased and exist The safety of operation in the case of high pressure, big well depth, while reducing labor intensity of operating staff.
Tubing string fixes load-bearing slips, travelling lifting slips is downward clamping, opens up, and both can bear operation Tubing string gravity, travelling lifting slips can also drive working string uplink under the promotion of master cylinder extending action, complete with pressure Pipe operation;Or it carries out pulling out operation by force when tubing string is met and blocked.Fixed anti-jack slips, travelling rotating jack-proof slips be upward clamping, It opens downwards, both can bearing air pressure in well, to the upper top power of working string, travelling rotating jack-proof slips can also be in main oil Under the pulling of cylinder contractive action, drives top power in working string confrontation to decline by force, complete lowering-in operation with pressure.Two groups of fixing cards Watt or two groups of traveling slips all can or respectively clamping tubing string synchronous in upper and lower both direction, thoroughly avoid altering pipe or pipe column falling well Risk.
Current gas well operation device under pressure is generally only equipped with a set of fixed anti-jack slips, a set of travelling anti-jack slips, no Has the ability for lifting working string upwards, the operation device under pressure under this configuration can only coordinate workover rig to carry out work with pressure Industry proposes working string when remaining tubing string weight is more than the upper top power of air pressure in well to tubing string in well by workover rig;Until well Interior residue tubing string weight is less than could be carried out by operation device under pressure when upper top power of the air pressure in well to tubing string go out operation. Pushing tubing string operation is carried out by operation device under pressure when lowering-in operation starts, until running string weight is slightly larger than air pressure pair in well When the upper top power of tubing string, changes and lowering-in operation is continued by workover rig.The gas well operation device under pressure of the present invention, is equipped with fixed load-bearing Slips, travelling lifting slips, the whole process operation of whole mouth well can be completed by self power, without workover rig coordinate, only need to One telescopic topmast rod-type arm is set on itself frame(0.5-2 tons of elevating capacity), accept transhipment operation device under pressure and rise The single oil pipe gone out.
Travelling rotating jack-proof slips can rotate while clamping tubing string with tubing string, it is ensured that in back-off with pressure, fall Go out under the special operation conditions such as downhole tool to remain to make tubing string to be in complete clamping slave mode.Power swivel or top can be coordinated to drive Carry out rotation workover treatment project with pressure;Or complete back-off with pressure with hydraulic tongs cooperation, the important operating mode such as pour out downhole tool; Improve the operational security under important operating mode and special operation condition.Travelling rotating jack-proof slips allows to have after clamping tubing string certain Freely up and down domain of walker, domain of walker meet working string and once complete the requirement of button or shackle.Due to this floating property, And this slips directly drives tension-type push form structure using double oil cylinders(Without lever mechanism), can thoroughly avoid bi-directional slip same When clamping after the case where not opening locked simultaneously.
Travelling lifting slips can also select the revotating card tile-type number for having rotation function.Travelling rotating jack-proof slips, travelling are lifted Rotary drive assembly can be installed by rising slips, after slips clamping working string, can be driven by slips by rotary drive assembly Working string rotates, and so that gas well operation device under pressure is not depended on turntable or top drive, independently the works such as realization back-off with pressure, overhaul with pressure Industry project.
The stand arrangement of gas well operation device under pressure is used to install the whole work packages for carrying wellhead assembly, and frame can be with It is overall structure, 2-3 part can also be divided into, the frame in attached drawing embodiment is divided into two parts, and the two is transported respectively And it is combined into one in operation field.
When rack uses two parts, installation rotary flange, ram preventer, closed hydraulic tongs, box cupling in hypomere rack Detection device, hypomere rack provide middle level workbench, and platform can connect outer inclined ladder with full guardrail, built-in cat ladder;Under Section rack use horizontal structure, lower end provide can be individually operated 4 fixed hydraulic stabilizer blades, 4 swing type hydraulic branch Foot has the supporting surface of bigger relative to other operation device under pressure, coordinates subsidiary high/low bearing, anti-sunken support plate, can be Complete machine is adjusted to vertical state under arbitrary well site condition and well head height, long-time stable reliably supports wellhead assembly, really Protect job safety.Wellhead assembly all other work packages are installed in epimere rack, are provided in top layer workbench and two layers Workbench, every layer of platform has full guardrail, and has built-in cat ladder to communicate;In addition top layer platform can connect outer inclined ladder and escape is slided Ladder.

Claims (8)

1. gas well Operating Pressure wellhead assembly, including the oil pipe elevating control component of the blowout prevention seal assembly of lower section and top and solid Both fixed rack(19), which is characterized in that the blowout prevention seal assembly is anti-including from bottom to top sequentially connected first flashboard Spray apparatus(2), closed hydraulic tongs(3), the second ram preventer(5), pressure release valve module(6), spray lubrication device(7)And annular Preventer, the oil pipe elevating control component includes bottom end rail(8), master cylinder(10), intermediate transverse girder(12), fixed load-bearing slips (14), fixed anti-jack slips(15), travelling rotating jack-proof slips(16), upper beam(17), travelling lifting slips(18), fixed to hold Heavy truck watt(14)With fixed anti-jack slips(15)From bottom to top it is connected to the second annular preventer in turn(13)Top, master cylinder (10)Cylinder body and bottom end rail(8)It is fixedly connected, master cylinder(10)Piston rod and upper beam(17)It is fixedly connected with driving upper beam (17)It moves up and down, move about rotating jack-proof slips(16)Slips is lifted with travelling(18)With upper beam(17)It is fixedly connected.
2. gas well Operating Pressure wellhead assembly as described in claim 1, which is characterized in that the annular preventer is by the first ring Shape preventer(9)With the second annular preventer(13)It connects and composes.
3. gas well Operating Pressure wellhead assembly as claimed in claim 2, which is characterized in that the first annular preventer(9) With the second annular preventer(13)Between be equipped with water cavity short circuit(11).
4. gas well Operating Pressure wellhead assembly as described in claim 1, which is characterized in that first ram preventer(2) Lower section is equipped with rotary flange(1)It is connect with well head.
5. gas well Operating Pressure wellhead assembly as described in claim 1, which is characterized in that the closed hydraulic tongs(3)With Second ram preventer(5)Between be equipped with collar detecting device(4).
6. gas well Operating Pressure wellhead assembly as described in claim 1, which is characterized in that the rack(19)By at least removable Unload two sections of compositions of connection.
7. gas well Operating Pressure wellhead assembly as described in claim 1 or 6, which is characterized in that the rack(19)Bottom is set There is hydraulic pressure stabilizer blade to be connect with ground.
8. gas well Operating Pressure wellhead assembly as claimed in claim 7, which is characterized in that the hydraulic pressure stabilizer blade includes fixed branch Foot(20)With pass through support arm(21)The swing stabilizer blade being hinged in rack(22).
CN201810249621.1A 2018-03-26 2018-03-26 Gas well Operating Pressure wellhead assembly Pending CN108425653A (en)

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Application Number Priority Date Filing Date Title
CN201810249621.1A CN108425653A (en) 2018-03-26 2018-03-26 Gas well Operating Pressure wellhead assembly

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Application Number Priority Date Filing Date Title
CN201810249621.1A CN108425653A (en) 2018-03-26 2018-03-26 Gas well Operating Pressure wellhead assembly

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Publication Number Publication Date
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CN201810249621.1A Pending CN108425653A (en) 2018-03-26 2018-03-26 Gas well Operating Pressure wellhead assembly

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109655223A (en) * 2018-11-15 2019-04-19 东北石油大学 Target holder for blasting impact sample mechanics properties testing system
CN110259404A (en) * 2019-05-24 2019-09-20 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 A kind of pit shaft operation device under pressure
CN111622705A (en) * 2020-07-28 2020-09-04 东营市正能石油科技有限公司 Universal annular blowout preventer for oil field wellhead
CN111878016A (en) * 2020-08-05 2020-11-03 四川圣诺油气工程技术服务有限公司 Under-pressure back-off device for gas well and oil pipe lifting method
CN112459732A (en) * 2020-12-15 2021-03-09 中国石油天然气集团有限公司 Operation method for safely passing neutral point by tripping tubular column in process of operating under pressure
CN112483028A (en) * 2020-12-11 2021-03-12 中国石油集团渤海钻探工程有限公司 Quick control device for releasing clamping of under-pressure reversing in well
CN113250627A (en) * 2021-06-29 2021-08-13 四川圣诺油气工程技术服务有限公司 Oil pipe centering device for operation under pressure
CN114352270A (en) * 2022-03-18 2022-04-15 四川圣诺油气工程技术服务有限公司 Identification system for tubing operation coupling without killing well

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109655223A (en) * 2018-11-15 2019-04-19 东北石油大学 Target holder for blasting impact sample mechanics properties testing system
CN109655223B (en) * 2018-11-15 2020-06-02 东北石油大学 Target frame for mechanical property detection system of blasting impact sample
CN110259404A (en) * 2019-05-24 2019-09-20 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 A kind of pit shaft operation device under pressure
CN110259404B (en) * 2019-05-24 2021-05-28 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 Shaft under-pressure operation device
CN111622705A (en) * 2020-07-28 2020-09-04 东营市正能石油科技有限公司 Universal annular blowout preventer for oil field wellhead
CN111622705B (en) * 2020-07-28 2020-10-16 东营市正能石油科技有限公司 Universal annular blowout preventer for oil field wellhead
CN111878016A (en) * 2020-08-05 2020-11-03 四川圣诺油气工程技术服务有限公司 Under-pressure back-off device for gas well and oil pipe lifting method
CN112483028A (en) * 2020-12-11 2021-03-12 中国石油集团渤海钻探工程有限公司 Quick control device for releasing clamping of under-pressure reversing in well
CN112459732A (en) * 2020-12-15 2021-03-09 中国石油天然气集团有限公司 Operation method for safely passing neutral point by tripping tubular column in process of operating under pressure
CN113250627A (en) * 2021-06-29 2021-08-13 四川圣诺油气工程技术服务有限公司 Oil pipe centering device for operation under pressure
CN113250627B (en) * 2021-06-29 2021-09-10 四川圣诺油气工程技术服务有限公司 Oil pipe centering device for operation under pressure
CN114352270A (en) * 2022-03-18 2022-04-15 四川圣诺油气工程技术服务有限公司 Identification system for tubing operation coupling without killing well
CN114352270B (en) * 2022-03-18 2022-05-10 四川圣诺油气工程技术服务有限公司 Identification system for collar in snubbing pipe tripping operation

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