CN106567691A - Operating method for open-hole and screen-pipe completion and pipe string - Google Patents

Operating method for open-hole and screen-pipe completion and pipe string Download PDF

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Publication number
CN106567691A
CN106567691A CN201610887810.2A CN201610887810A CN106567691A CN 106567691 A CN106567691 A CN 106567691A CN 201610887810 A CN201610887810 A CN 201610887810A CN 106567691 A CN106567691 A CN 106567691A
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CN
China
Prior art keywords
screen casing
tubing string
chamber
slot
plugging material
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.)
Granted
Application number
CN201610887810.2A
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Chinese (zh)
Other versions
CN106567691B (en
Inventor
陶冶
张洪良
邓峰
孔璐琳
刘新云
耿东士
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China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Priority to CN201610887810.2A priority Critical patent/CN106567691B/en
Publication of CN106567691A publication Critical patent/CN106567691A/en
Application granted granted Critical
Publication of CN106567691B publication Critical patent/CN106567691B/en
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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
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02Subsoil filtering
    • E21B43/10Setting of casings, screens, liners or the like in wells
    • 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
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02Subsoil filtering
    • E21B43/08Screens or liners

Abstract

The invention discloses an operating method for open-hole and screen-pipe completion and a pipe string. The operating method for open-hole and screen-pipe completion comprises the following steps that the pipe string is inserted into a shaft, wherein the pipe string comprises at least one screen pipe, a float coupling and a float collar, the float coupling is arranged at the front end of the screen pipe and partitions an inner cavity of the pipe string into a first chamber and a second chamber separated from the first chamber, the float collar is arranged at the rear end of the pipe string and used for blocking the pipe string, and the cutting seams of the screen pipe are blocked with soluble blocking materials; the pipe string is subjected to setting after being inserted into the well bottom; and after the pipe string is subjected to setting, the float coupling is opened to enable the first chamber and the second chamber of the pipe string to communicate. According to the operating method for open-hole and screen-pipe completion and the pipe string, the blocking materials are adopted for blocking the seams of the screen pipe; and the float coupling is connected to the screen pipe for forming the pipe string with the multiple sections containing air, the buoyancy of the screen pipe string is improved, and friction resistance in the inserting process of the screen pipe is reduced, and the inserting difficulty of the screen pipe is effectively lowered.

Description

The operational method and tubing string of bore hole screen casing
Technical field
The present invention relates to brill Well Completion Engineering of Oil Reservoirs, the operational method and tubing string of more particularly to a kind of bore hole screen casing.
Background technology
As unconventionaloil pool hides the continuous lifting for going deep into and boring completion technique and process matched therewith level of exploitation, big displacement Horizontal well, an ultra shallow layer horizontal well enforcement it is more prevalent.In the face of this kind of well type, affected by self gravitation and frictional resistance, completion set Enter difficulty under pipe and screen casing far above straight well.At present, floating coupling Casing running technology is more ripe, and the technology is using set The floating for managing itself tubing string reduces the friction in decentralization process.Specifically, by floating coupling being added in sleeve pipe and being floated Hoop, so that sleeve pipe produces certain buoyancy in well, reaches the purpose entered under casing safety.But, as screen casing makes pipe Post is presented non-hermetic environments, therefore floating Casing running technology cannot be directly applied in screen casing barefoot completion.
The content of the invention
In order to overcome at least one in the drawbacks described above of prior art, the technical problem to be solved to be to provide A kind of operational method and tubing string of bore hole screen casing.
The present invention concrete technical scheme be:
A kind of operational method of bore hole screen casing, it comprises the following steps:
By tubing string lower going-into-well cylinder, wherein, the tubing string includes at least one screen casing, is arranged on being used for for the screen casing front end The inner chamber of the tubing string is isolated into the floating coupling of mutually isolated first chamber and second chamber, is arranged on after the tubing string The float collar for blocking the tubing string at end, is blocked by solubility plugging material at the slot of the screen casing;
Behind tubing string lower going-into-well bottom, tubing string is set;
After the tubing string sets, opening floating coupling makes the first chamber of the tubing string connect with second chamber.
Preferably, " by tubing string lower going-into-well cylinder " includes:
Determine the predetermined quantity of screen casing;
The screen casing of predetermined quantity, the floating coupling and the float collar are connected to form tubing string.
Preferably, include in step " by tubing string lower going-into-well cylinder ":
The solubility plugging material corresponding with drilling fluid is arranged at the slot of the screen casing, it is described to block The slot of screen casing.
Preferably, " the solubility plugging material corresponding with drilling fluid is arranged on into the slot of the screen casing in step Place " includes:
When drilling fluid is water-base drilling fluid, cutting for the screen casing is arranged on using oil-soluble macromolecule screen casing plugging material At seam, to block the slot of the screen casing.
Preferably, the oil-soluble macromolecule screen casing plugging material is polyethylene.
Preferably, " the solubility plugging material corresponding with drilling fluid is arranged on into the slot of the screen casing in step Place " includes:
When drilling fluid is oil base drilling fluid, cutting for the screen casing is arranged on using water soluble polymer screen casing plugging material At seam, to block the slot of the screen casing.
Preferably, the water soluble polymer screen casing plugging material is polyacrylamide or polyvinyl alcohol.
Preferably, in step " connect the screen casing of predetermined quantity, the floating coupling and the float collar and to form tubing string " Including:
In one section of air column of the space interior sealing formed by floating coupling and screen casing.
Preferably, include in step " after tubing string lower going-into-well cylinder, setting to tubing string ":
Behind tubing string lower going-into-well bottom, hanging setting is adopted to tubing string.
Preferably, include in step " opening floating coupling makes the first chamber of the tubing string connect with second chamber ":
Lysate is injected in the first chamber, to open the stifled of by made by solubility plugging material floating coupling Head.
Preferably, include in step " opening floating coupling makes the first chamber of the tubing string connect with second chamber ":
The plug of floating coupling is bored by drill bit and opened.
Preferably, wrap after step " floating coupling is opened makes the first chamber of the tubing string connect with second chamber " Include:
Dissolving is arranged on the solubility plugging material at the slot of screen casing.
Preferably, include in step " dissolving is arranged on the solubility plugging material at the slot of screen casing ":
According to the solubility plugging material being arranged at the slot of screen casing, blockages relieving fluid is injected into tubing string.
Preferably, " according to the solubility plugging material being arranged at the slot of screen casing, de-plugging is injected into tubing string in step Liquid " includes:
When solubility plugging material is oil-soluble macromolecule plugging material, organic solvent is injected into tubing string.
Preferably, the organic solvent is diesel oil or kerosene.
Preferably, " according to the solubility plugging material being arranged at the slot of screen casing, de-plugging is injected into tubing string in step Liquid " includes:
When solubility plugging material is polyacrylamide, acid solution is injected into tubing string.
Preferably, " according to the solubility plugging material being arranged at the slot of screen casing, de-plugging is injected into tubing string in step Liquid " includes:
When solubility plugging material is polyvinyl alcohol, water is injected into tubing string.
The present invention concrete technical scheme be:A kind of tubing string of bore hole screen casing, it includes sleeve pipe, is arranged on sleeve pipe Screen casing, be arranged on the screen casing front end for the inner chamber of the tubing string is isolated into mutually isolated first chamber and the second chamber The floating coupling of room and the float collar for blocking the tubing string of the tubing string rear end is arranged on, at the slot of the screen casing Blocked by solubility plugging material.
Screen pipe opening is sealed using plugging material;Connection floating coupling forms the aeriferous tubing string of multistage in sieve tube segment, carries High screen casing tubing string natural buoyancy, reduces the frictional resistance during screen insertion, so as to effectively reduce entering difficulty under screen casing.
Description of the drawings
Accompanying drawing described here is only used for task of explanation, and is not intended to by any way limit model disclosed by the invention Enclose.In addition, shape and proportional sizes of each part in figure etc. are only schematic, the understanding of the present invention is used to help, and It is not the shape and proportional sizes for specifically limiting each part of the invention.Those skilled in the art under the teachings of the present invention, can Implement the present invention to select various possible shapes and proportional sizes as the case may be.
Fig. 1 is the partial structural diagram of tubing string in the present invention.
The reference of the figures above is:1st, floating coupling;2nd, screen casing;3rd, slot;4th, float collar.
Specific embodiment
With reference to the description of accompanying drawing and the specific embodiment of the invention, the details of the present invention can be clearly understood.But It is, the specific embodiment of invention described herein to be only used for explaining the purpose of the present invention, and can not understands by any way Into being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that any possible change based on the present invention Shape, these are regarded as belonging to the scope of the present invention.
It should be noted that when element is referred to as " being arranged at " another element, it can directly on another element Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ", For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the application The implication that technical staff is generally understood that is identical.Term used in the description of the present application is intended merely to description tool herein The purpose of the embodiment of body, it is not intended that in restriction the application.Term as used herein "and/or" includes one or more The arbitrary and all of combination of related Listed Items.
The invention discloses a kind of operational method of bore hole screen casing 2, it comprises the following steps:
By tubing string lower going-into-well cylinder, wherein, the tubing string includes at least one screen casing 2, is arranged on the use of 2 front end of the screen casing In the inner chamber of the tubing string to be isolated into the floating coupling 1 of mutually isolated first chamber and second chamber, the pipe is arranged on The float collar 4 for blocking the tubing string of post rear end, is blocked by solubility plugging material at the slot 3 of the screen casing 2;
Behind tubing string lower going-into-well bottom, tubing string is set;
After the tubing string sets, opening floating coupling 1 makes the first chamber of the tubing string connect with second chamber.
Solubility plugging material, before entering oil well under tubing string, is arranged on screen casing 2 by the operational method in the embodiment of the present application Slot 3 at, so as to by 2 temporarily sealing of screen casing, so as to increase the buoyancy of screen casing 2, reduce screen casing 2 because rubbing caused by self gravitation Hinder excessive and be difficult to down the risk for entering.After entering under screen casing 2, solubility plugging material is dissolved, so as to realize automatic de-plugging, from And recover 2 function of screen casing.
The beneficial effect brought by the present invention:Using 2 gap of plugging material sealing screen casing;Connection floating coupling 1 is in screen casing 2 Section forms the tubing string that multistage contains air or lightweight drilling fluid, improves 2 tubing string natural buoyancy of screen casing, during reducing entering under screen casing 2 Frictional resistance, so as to effectively reduce entering difficulty under screen casing 2.
In one embodiment, when drilling fluid is water-base drilling fluid, set using 2 plugging material of oil-soluble macromolecule screen casing Put at the slot 3 of the screen casing 2, to block the slot 3 of the screen casing 2.Wherein, 2 envelope of oil-soluble macromolecule screen casing Stifled material is polyethylene.Polyethylene (C2H4)nMaterial passes through ethylene, with triethyl aluminum-iron chloride as catalyst at 70-100 DEG C Polymerization is obtained.The material is water insoluble, stable to alkali.
Polyethylene (C will be provided with slot 32H4)nThe screen casing 2 of material, the floating coupling 1 and the float collar 4 connection shape Into tubing string, and by tubing string lower going-into-well bottom.Wherein, the inner chamber of the tubing string is isolated into the first mutually isolated chamber by floating coupling 1 Room and second chamber.Float collar 4 is arranged on the tubing string rear end, and the tubing string is blocked.
Behind tubing string lower going-into-well bottom, hanging setting is carried out to tubing string.
After tubing string sets, lower drill bit bores the plug for opening floating coupling 1, makes the first chamber and second chamber of the tubing string Connection.
After the first chamber of the tubing string is connected with second chamber, if the target zone entered under screen casing 2 is oil reservoir, the sieve Pipe 2 can the de-plugging automatically after oil is met.
In one preferred embodiment, after the first chamber in the tubing string is connected with second chamber, if under screen casing 2 The target zone for entering is not oil reservoir or in order that polythene material dissolving more thoroughly, can be injected such as diesel oil, kerosene lamp organic solvent solution It is stifled.
In one embodiment, when drilling fluid is oil base drilling fluid, using 2 plugging material of water soluble polymer screen casing, Such as polyacrylamide materials are arranged at the slot 3 of the screen casing 2, to block the slot 3 of the screen casing 2.Wherein, poly- third Acrylamide (C3H5NO)n, the material passes through acrylamide, with (NH under 50-60 DEG C of weak acid environment4)2S2O8For catalyst Polymerization is obtained.The material is practically insoluble in the common organic solvents such as gasoline, kerosene, diesel oil, benzene, toluene and dimethylbenzene.Use the material Made by material, temporarily stifled screen casing 2 can be used in oil base drilling fluid, using injection when boring well-flushing after plug behind 2 lower going-into-well bottom of screen casing Acid soak de-plugging.The ambient temperature that the de-plugging of the material needs is more than 150 DEG C.
Screen casing 2, the floating coupling 1 and the float collar 4 that polyacrylamide materials are provided with slot 3 are connected to be formed Tubing string, and by tubing string lower going-into-well bottom.Wherein, the inner chamber of the tubing string is isolated into mutually isolated first chamber by floating coupling 1 And second chamber.The floating coupling 1 is made up of soluble material, can be opened in the presence of lysate.Float collar 4 is arranged on institute Tubing string rear end is stated, and the tubing string is blocked, in one section of air column of tubing string interior sealing, so as to improve the buoyancy of the tubing string.
Behind tubing string lower going-into-well bottom, hanging setting is carried out to tubing string.
After tubing string sets, the plug of floating coupling 1 is bored by drill bit and opened, make the first chamber and second of the tubing string Chamber.
After the first chamber of the tubing string is connected with second chamber, acid solution can be injected into the tubing string (can be Hydrochloric acid, nitric acid or oxalic acid) carry out de-plugging.
In one embodiment, when drilling fluid is oil base drilling fluid, using 2 plugging material of water soluble polymer screen casing, Such as polyvinyl alcohol (C2H4O)nMaterial is arranged at the slot 3 of the screen casing 2, to block the slot 3 of the screen casing 2.Its In, the material non-toxic is harmless, insoluble in the organic solvents such as gasoline, kerosene, diesel oil, more than 95 DEG C water solubles.
By calculating, when the initial riding position of floating coupling is selected at the transition resistance angle of sieve tube segment, screen casing rubs Resistance load is minimum, is easiest to screen insertion.Enter 2 tubing string of screen casing and leave buoyancy needed for the borehole wall under horizontal segment to determine screen casing 2 under calculating Quantity.
Screen casing 2, the floating coupling 1 and the float collar 4 of polyvinyl alcohol material will be provided with the slot 3 of predetermined quantity Connection forms tubing string, and by tubing string lower going-into-well bottom.Wherein, the inner chamber of the tubing string is isolated into mutually isolated by floating coupling 1 First chamber and second chamber.The floating coupling 1 is made up of soluble material, can be opened in the presence of lysate.Float collar 4 The tubing string rear end is arranged on, and the tubing string is blocked.Preferably, note in the space formed by floating coupling 1 and screen casing 2 Enter air, so as to improve the buoyancy of the tubing string.
Behind tubing string lower going-into-well bottom, hanging setting is carried out to tubing string.
After tubing string sets, the plug of floating coupling 1 is bored by drill bit and opened, make the first chamber and second of the tubing string Chamber.
After the first chamber of the tubing string is connected with second chamber, acid solution can be injected into the tubing string and be solved It is stifled.
With reference to shown in Fig. 1, the invention also discloses a kind of tubing string of bore hole screen casing 2, it includes sleeve pipe, is arranged on sleeve pipe On screen casing 2, be arranged on 2 front end of the screen casing for by the inner chamber of the tubing string be isolated into mutually isolated first chamber and The floating coupling 1 of second chamber, and the float collar 4 for blocking the tubing string of the tubing string rear end is arranged on, the screen casing 2 Slot 3 at blocked by solubility plugging material.
It should be noted that in the description of the present application, term " first ", " second " etc. are only used for describing purpose and difference , there is no sequencing between the two in similar object, can not be interpreted as indicating or imply relative importance.Additionally, In the description of the present application, unless otherwise stated, " multiple " are meant that two or more.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with The difference of other embodiment, between each embodiment identical similar part mutually referring to.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art Scholar will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.It is all according to the present invention Equivalence changes or modification that spirit is made, should all be included within the scope of the present invention.

Claims (18)

1. a kind of operational method of bore hole screen casing, it is characterised in that it comprises the following steps:
By tubing string lower going-into-well cylinder, wherein, the tubing string include at least one screen casing, be arranged on the screen casing front end for by institute The inner chamber for stating tubing string is isolated into the floating coupling of mutually isolated first chamber and second chamber, is arranged on the tubing string rear end For blocking the float collar of the tubing string, blocked by solubility plugging material at the slot of the screen casing;
Behind tubing string lower going-into-well bottom, tubing string is set;
After the tubing string sets, opening floating coupling makes the first chamber of the tubing string connect with second chamber.
2. the operational method of bore hole screen casing according to claim 1, it is characterised in that bag in " by tubing string lower going-into-well cylinder " Include:
Determine the predetermined quantity of screen casing;
The screen casing of predetermined quantity, the floating coupling and the float collar are connected to form tubing string.
3. the operational method of bore hole screen casing according to claim 1, it is characterised in that in step " by tubing string lower going-into-well Cylinder " includes:
The solubility plugging material corresponding with drilling fluid is arranged at the slot of the screen casing, to block the screen casing Slot.
4. the operational method of bore hole screen casing according to claim 3, it is characterised in that " will be with drilling fluid pair in step The solubility plugging material answered is arranged at the slot of the screen casing " include:
When drilling fluid is water-base drilling fluid, the slot of the screen casing is arranged on using oil-soluble macromolecule screen casing plugging material Place, to block the slot of the screen casing.
5. the operational method of bore hole screen casing according to claim 4, it is characterised in that the oil-soluble macromolecule screen casing Plugging material is polyethylene.
6. the operational method of bore hole screen casing according to claim 3, it is characterised in that " will be with drilling fluid pair in step The solubility plugging material answered is arranged at the slot of the screen casing " include:
When drilling fluid is oil base drilling fluid, the slot of the screen casing is arranged on using water soluble polymer screen casing plugging material Place, to block the slot of the screen casing.
7. the operational method of bore hole screen casing according to claim 6, it is characterised in that the water soluble polymer screen casing Plugging material is polyacrylamide or polyvinyl alcohol.
8. the operational method of bore hole screen casing according to claim 2, it is characterised in that in step " by predetermined quantity Screen casing, the floating coupling and the float collar connect to form tubing string " include:
In one section of air column of the space interior sealing formed by floating coupling and screen casing.
9. the operational method of bore hole screen casing according to claim 1, it is characterised in that in step " in tubing string lower going-into-well After cylinder, tubing string is set " include:
Behind tubing string lower going-into-well bottom, hanging setting is adopted to tubing string.
10. the operational method of bore hole screen casing according to claim 1, it is characterised in that " open floating coupling in step The first chamber of the tubing string is made to connect with second chamber " include:
Lysate is injected in the first chamber, to open the plug of the floating coupling by made by solubility plugging material.
The operational method of 11. bore hole screen casings according to claim 1, it is characterised in that " open floating coupling in step The first chamber of the tubing string is made to connect with second chamber " include:
The plug of floating coupling is bored by drill bit and opened.
The operational method of 12. bore hole screen casings according to claim 1, it is characterised in that " floating coupling is opened in step The first chamber of the tubing string is made to connect with second chamber " include afterwards:
Dissolving is arranged on the solubility plugging material at the slot of screen casing.
The operational method of 13. bore hole screen casings according to claim 1, it is characterised in that " dissolving is arranged on sieve in step Solubility plugging material at the slot of pipe " includes:
According to the solubility plugging material being arranged at the slot of screen casing, blockages relieving fluid is injected into tubing string.
The operational method of 14. bore hole screen casings according to claim 13, it is characterised in that in step " according to being arranged on Solubility plugging material at the slot of screen casing, injects blockages relieving fluid into tubing string " include:
When solubility plugging material is oil-soluble macromolecule plugging material, organic solvent is injected into tubing string.
The operational method of 15. bore hole screen casings according to claim 14, it is characterised in that the organic solvent is diesel oil Or kerosene.
The operational method of 16. bore hole screen casings according to claim 13, it is characterised in that in step " according to being arranged on Solubility plugging material at the slot of screen casing, injects blockages relieving fluid into tubing string " include:
When solubility plugging material is polyacrylamide, acid solution is injected into tubing string.
17. the operational method of bore hole screen casing according to claim 13, it is characterised in that in step " according to being arranged on Solubility plugging material at the slot of screen casing, injects blockages relieving fluid into tubing string " include:
When solubility plugging material is polyvinyl alcohol, water is injected into tubing string.
18. a kind of tubing strings of bore hole screen casing, it is characterised in that it includes sleeve pipe, the screen casing being arranged on sleeve pipe, is arranged on institute State screen casing front end the floating coupling for the inner chamber of the tubing string to be isolated into mutually isolated first chamber and second chamber, And the float collar for blocking the tubing string of the tubing string rear end is arranged on, material is blocked by solubility at the slot of the screen casing Material closure.
CN201610887810.2A 2016-10-11 2016-10-11 Method of operating an open hole screen and tubular string Active CN106567691B (en)

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Application Number Priority Date Filing Date Title
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CN106567691B CN106567691B (en) 2020-04-10

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Cited By (9)

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CN108071374A (en) * 2018-01-30 2018-05-25 天津盛鑫华瑞石油技术有限公司 Anti- mud drum screen casing
CN108457626A (en) * 2017-12-28 2018-08-28 中国石油天然气集团公司 A kind of dissolution type sand bridge screen casing
CN109611061A (en) * 2018-11-29 2019-04-12 中国海洋石油集团有限公司 A method of floating tripping in screen casing
CN110130863A (en) * 2019-04-26 2019-08-16 托普威尔石油技术股份公司 A kind of toe-end valve
CN110242232A (en) * 2018-03-09 2019-09-17 成都汉科石油技术有限公司 A kind of tubing string and construction technology having cleaned well for high temperature and pressure oil/gas well
CN110500065A (en) * 2019-09-20 2019-11-26 德州众凯石油科技有限公司 The screen construction of oil/gas well floatability tripping in
CN110513053A (en) * 2018-05-22 2019-11-29 中国石油化工股份有限公司 Soluble oil pipe column
CN111691865A (en) * 2020-06-29 2020-09-22 中国石油天然气股份有限公司 Perforation crack initiation-free method for cased well
CN117514088A (en) * 2024-01-05 2024-02-06 四川圣诺油气工程技术服务有限公司 Method for pressing long screen pipe under pressure

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108457626A (en) * 2017-12-28 2018-08-28 中国石油天然气集团公司 A kind of dissolution type sand bridge screen casing
CN108071374A (en) * 2018-01-30 2018-05-25 天津盛鑫华瑞石油技术有限公司 Anti- mud drum screen casing
CN110242232A (en) * 2018-03-09 2019-09-17 成都汉科石油技术有限公司 A kind of tubing string and construction technology having cleaned well for high temperature and pressure oil/gas well
CN110513053A (en) * 2018-05-22 2019-11-29 中国石油化工股份有限公司 Soluble oil pipe column
CN109611061A (en) * 2018-11-29 2019-04-12 中国海洋石油集团有限公司 A method of floating tripping in screen casing
CN110130863A (en) * 2019-04-26 2019-08-16 托普威尔石油技术股份公司 A kind of toe-end valve
CN110500065A (en) * 2019-09-20 2019-11-26 德州众凯石油科技有限公司 The screen construction of oil/gas well floatability tripping in
CN110500065B (en) * 2019-09-20 2024-03-08 德州众凯石油科技有限公司 Screen pipe structure capable of being floated and lowered into oil-gas well
CN111691865A (en) * 2020-06-29 2020-09-22 中国石油天然气股份有限公司 Perforation crack initiation-free method for cased well
CN117514088A (en) * 2024-01-05 2024-02-06 四川圣诺油气工程技术服务有限公司 Method for pressing long screen pipe under pressure
CN117514088B (en) * 2024-01-05 2024-04-05 四川圣诺油气工程技术服务有限公司 Method for pressing long screen pipe under pressure

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