CN111946272A - Horizontal well underground communicating vessel and operation method - Google Patents
Horizontal well underground communicating vessel and operation method Download PDFInfo
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- CN111946272A CN111946272A CN201910413820.6A CN201910413820A CN111946272A CN 111946272 A CN111946272 A CN 111946272A CN 201910413820 A CN201910413820 A CN 201910413820A CN 111946272 A CN111946272 A CN 111946272A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 56
- 210000001503 joint Anatomy 0.000 claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000002195 soluble material Substances 0.000 claims description 3
- 239000004636 vulcanized rubber Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000004576 sand Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
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- Geochemistry & Mineralogy (AREA)
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Abstract
The invention relates to a horizontal well underground communicating vessel and an operation method. The horizontal well downhole communicating vessel comprises a communicating vessel female joint and a communicating vessel male joint; the communicating vessel female joint comprises an upper joint, a jacket, a sealing sleeve and a guide shoe plug; the male connector comprises a connector and a plug; the sealing sleeve of the communicating device female joint and the plug of the connector male joint form axial insertion sealing fit, and meanwhile, the communicating device female joint and the connector male joint form axial locking fit. The operation method comprises the following steps: installing a communicating vessel female joint at the bottom of a first well completion pipe column, and running the communicating vessel female joint to a preset position to guide the shoe plug to be dissolved in drilling fluid; the bottom of the second well completion pipe column is provided with a connector male joint for putting in the completion pipe column; the female joint and the male joint realize butt joint locking when the male joint plug is inserted into the female joint sealing sleeve. The butt joint of two well completion pipe columns of the horizontal well communicating well is realized, the problems caused by formation sand production and formation collapse are effectively solved, and convenience is brought to later-stage production and maintenance.
Description
Technical Field
The invention relates to a horizontal well downhole communicating vessel and an operation method in the field of well completion tools.
Background
The communication well is an important means for exploiting resources such as underground brine, coal beds, geothermal heat and the like, the communication well mainly takes butt joint of a horizontal well and a vertical well at present, the communication well in the mode can only be used for connecting stratum channels of two wells, and direct connection between well completion pipe columns cannot be realized, so that the problems of production, poor connectivity, stratum collapse, communication failure and the like caused by stratum sand production are solved.
Chinese patent CN206246093U discloses an oil jacket communicating vessel. The main problem of current oil receiving device with many, the operation is complicated, work load is big, unsafe and anti-pollution effect is poor of equipment. The technical scheme is as follows: the upper joint and the lower joint are connected with an outer barrel, an inner sleeve is arranged in the outer barrel, an oil drainage hole is formed in the upper portion of the wall of the outer barrel, a strip hole is formed in the wall of the outer barrel below the oil drainage hole, a supporting block is connected in the strip hole, a knife edge pin is transversely connected to the supporting block, one end, provided with a groove, of the knife edge pin is arranged in the knife edge, the knife edge is arranged in the groove in the outer wall of the inner sleeve. But the oil jacket communicating vessel still cannot effectively solve the problem of butt joint of a horizontal well and a vertical well pipe column.
The communicated horizontal well is a novel communicated well mode, and a better communicated effect can be obtained by directly communicating and butting two horizontal wells in a stratum. The butt joint of the two well completion pipe columns of the horizontal well communicating well is realized, the problems caused by formation sand production and formation collapse can be effectively solved, and convenience is brought to later-stage production and maintenance.
Disclosure of Invention
Aiming at the condition that the existing butt joint tool for the communicating well of the horizontal well is deficient, the invention provides the underground communicating device of the horizontal well, which aims to solve the problem that the underground pipe column of the communicating well of the horizontal well is rigidly connected and sealed, and the problems of layer sand production, stratum collapse and the like are avoided to bring adverse effects to the communicating well of the horizontal well; the invention also relates to a method for realizing the communication operation of the horizontal well by applying the tool.
One of the technical schemes of the invention is that the horizontal well underground communicating vessel comprises a communicating vessel female joint and a communicating vessel male joint;
the communicating vessel female joint comprises an upper joint, a jacket, a sealing sleeve and a guide shoe plug; the upper part of an upper joint of the communicating vessel female joint is provided with a connecting thread, the outer sleeve is positioned at the lower part of the upper joint, the sealing sleeve is fixed in the outer sleeve in a sealing manner, the upper joint and the sealing sleeve are of hollow structures, the guide shoe plug is fixed at the lower part of the outer sleeve in a sealing manner and is plugged by the upper joint and the sealing sleeve which are of hollow structures, and the guide shoe plug is made of soluble materials;
the male connector comprises a connector and a plug; wherein, the upper part of the connector is provided with connecting threads, the plug and the connector are of a hollow structure, the lower part of the plug is blocked and is circumferentially provided with a circulating space, and the plug seals and fixes the lower part of the connector;
the connector female joint sealing sleeve and the plug of the connector male joint form axial insertion sealing fit, and the connector female joint and the connector male joint form axial locking fit.
The second technical scheme of the invention is the operation method by using the horizontal well underground communicating vessel, which comprises the following steps:
after the first borehole A of the horizontal well communicating well is drilled, a communicating vessel female joint is installed at the bottom of a completion pipe string a, and the completion pipe string a is lowered to a preset position;
a guide shoe plug on the female connector of the communicating vessel is dissolved in the drilling fluid, and the completion pipe string a enters a to-be-butted state after the guide shoe plug is completely dissolved;
after the second borehole B of the horizontal well communicating well is drilled and communicated with the borehole A, a communicating vessel male joint is installed at the bottom of the well completion pipe string B;
a well completion pipe string b is put in, the pipe string is lifted up before the well completion pipe string b is ready to be butted, the original lifting hanging weight of the well completion pipe string b is recorded, and then the well completion pipe string b is continuously put in for butting;
inserting a plug of a male connector of the communicating device into a sealing sleeve of a female connector of the communicating device at the bottom of a well completion string a, and realizing butt joint locking of the female connector of the communicating device and the male connector of the communicating device;
and lifting the completion string b to exceed the original lifting hanging weight, and if the string hanging weight is continuously increased, the butt joint of the communicating vessels is successful, so that a completion string c is formed.
The invention relates to a further optimization scheme of a first horizontal well downhole communicating vessel, which comprises the following steps:
the communicating device female connector and the connector male connector form axial locking fit through a clamp spring and a clamp spring groove which are arranged on the contact surface of the outer sleeve and the plug.
The guide shoe plug is connected and fixed at the lower part of the outer sleeve through a clamp spring.
And a wear-resistant sealing layer is arranged in the sealing sleeve.
The wear-resistant sealing layer of the sealing sleeve is a vulcanized rubber layer.
The upper joint and the outer sleeve, and the connector and the plug are split combined mechanisms connected through threads.
And a sealing element is arranged at the threaded connection part of the upper joint and the outer sleeve.
The invention relates to an operation method for a further optimization scheme of a horizontal well downhole communicating vessel, which comprises the following steps:
after the first borehole A of the horizontal well communicating well is drilled, a communicating vessel female joint is installed at the bottom of a completion pipe string a, and the completion pipe string a is lowered to a preset position;
a guide shoe plug on the female connector of the communicating vessel is dissolved in the drilling fluid, and the completion pipe string a enters a to-be-butted state after the guide shoe plug is completely dissolved;
after the second borehole B of the horizontal well communicating well is drilled and communicated with the borehole A, a communicating vessel male joint is installed at the bottom of the well completion pipe string B;
a well completion pipe string b is put in, the pipe string is lifted up before the well completion pipe string b is ready to be butted, the original lifting hanging weight of the well completion pipe string b is recorded, and then the well completion pipe string b is continuously put in for butting;
inserting a plug of a male connector of the communicating device into a sealing sleeve of a female connector of the communicating device at the bottom of a well completion pipe column a, and embedding a clamp spring of the female connector of the communicating device into a clamp spring groove of the male connector of the communicating device to realize butt joint locking;
and lifting the completion string b to exceed the original lifting hanging weight, and if the string hanging weight is continuously increased, the butt joint of the communicating vessels is successful, so that a completion string c is formed.
The invention provides a special tool for carrying out underground pipe column butt joint on a horizontal communication well, which has the advantages of realizing effective butt joint of well completion pipe columns of the horizontal communication well, realizing rigid connection and sealing of two well completion pipe columns in the horizontal communication well, effectively solving the problems of production caused by sand production and stratum collapse in the horizontal communication well, meeting the requirements and characteristics of well completion of the horizontal communication well, improving the development effect of the communication well and filling the blank of the well completion tool of the horizontal communication well.
Drawings
FIG. 1 is a schematic view of a female connector of a communicator;
FIG. 2 is a schematic view of a male connector of the connector;
FIG. 3 is a schematic view of a completed structure of the downhole connector in butt joint;
FIG. 4 is a schematic view of the wellbore [ A ] and completion string [ a ];
FIG. 5 is a schematic view of the wellbore [ B ] and completion string [ B ];
FIG. 6 is a schematic structural diagram of a completion string [ c ] after the butting is completed.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Example 1:
a horizontal well downhole communicating vessel comprises a communicating vessel female joint and a communicating vessel male joint; the communicating vessel female joint comprises an upper joint 101, a jacket 102, a sealing sleeve 104 and a guide shoe plug 106; the upper part of an upper joint 101 of the communicating vessel female joint is provided with a connecting thread, a jacket 102 is positioned at the lower part of the upper joint 101, a sealing sleeve 104 is fixed in the jacket 102 in a sealing way, the upper joint 101 and the sealing sleeve 104 are of hollow structures, a guide shoe plug 106 is fixed at the lower part of the jacket 102 in a sealing way and used for plugging the upper joint 101 and the sealing sleeve 104 which are of hollow structures, and the guide shoe plug 106 is made of soluble materials;
the male connector comprises a connector 201 and a plug 203; wherein, the upper part of the connector 201 is provided with connecting threads, the plug 203 and the connector 201 are of a hollow structure, the lower part of the plug 203 is sealed and provided with a circulating space 204 in the circumferential direction, and the plug 203 seals and fixes the lower part of the connector 201;
the sealing sleeve 104 of the communicating vessel female joint and the plug 203 of the connector male joint form axial insertion sealing fit, and the communicating vessel female joint and the connector male joint form axial locking fit.
Example 2:
a method of operating with a horizontal well downhole communicator, comprising:
after the first borehole A of the horizontal well communicating well is drilled, a communicating vessel female joint is installed at the bottom of a completion pipe string a, and the completion pipe string a is lowered to a preset position;
a guide shoe plug 106 on the female connector of the communicating device is dissolved in the drilling fluid, and the completion string a enters a to-be-butted state after the guide shoe plug 106 is completely dissolved;
after the second borehole B of the horizontal well communicating well is drilled and communicated with the borehole A, a communicating vessel male joint is installed at the bottom of the well completion pipe string B;
a well completion pipe string b is put in, the pipe string is lifted up before the well completion pipe string b is ready to be butted, the original lifting hanging weight of the well completion pipe string b is recorded, and then the well completion pipe string b is continuously put in for butting;
inserting a plug 203 of a male connector of the communicating device into a sealing sleeve 104 of a female connector of the communicating device at the bottom of the completion string a, and realizing butt joint locking of the female connector of the communicating device and the male connector of the communicating device;
and lifting the completion string b to exceed the original lifting hanging weight, and if the string hanging weight is continuously increased, the butt joint of the communicating vessels is successful, so that a completion string c is formed.
Example 3:
the further optimization of the horizontal well downhole communicating vessel based on the embodiment 1 comprises the following steps:
the connector female connector and the connector male connector form axial locking fit through a snap spring 105 and a snap spring groove 205 which are arranged on the contact surface of the outer sleeve 102 and the plug 203.
The guide shoe plug 106 is fixed at the lower part of the jacket 102 through a clamp spring 105.
And a wear-resistant sealing layer is arranged in the sealing sleeve 104.
The wear-resistant sealing layer of the sealing sleeve 104 is a vulcanized rubber layer 107.
The upper connector 101 and the outer sleeve 102, the connector 201 and the plug 203 are all split combined mechanisms connected through threads.
And a sealing element 103 is arranged at the threaded connection part of the upper connector 101 and the outer sleeve 102.
Example 4:
the horizontal well downhole communicating vessel operation method according to embodiment 3 includes:
after the first borehole A of the horizontal well communicating well is drilled, a communicating vessel female joint is installed at the bottom of a completion pipe string a, and the completion pipe string a is lowered to a preset position;
a guide shoe plug 106 on the female connector of the communicating device is dissolved in the drilling fluid, and the completion string a enters a to-be-butted state after the guide shoe plug 106 is completely dissolved;
after the second borehole B of the horizontal well communicating well is drilled and communicated with the borehole A, a communicating vessel male joint is installed at the bottom of the well completion pipe string B;
a well completion pipe string b is put in, the pipe string is lifted up before the well completion pipe string b is ready to be butted, the original lifting hanging weight of the well completion pipe string b is recorded, and then the well completion pipe string b is continuously put in for butting;
inserting a plug 203 of a connector male joint 2 into a sealing sleeve 104 of a connector female joint 1 at the bottom of a well completion string a, and embedding a clamp spring 105 of the connector female joint 1 into a clamp spring groove 205 of the connector male joint 2 to realize butt joint locking;
and lifting the completion string b to exceed the original lifting hanging weight, and if the string hanging weight is continuously increased, the butt joint of the communicating vessels is successful, so that a completion string c is formed.
Example 5:
the underground communicating vessel for the horizontal well comprises a communicating vessel female joint and a communicating vessel male joint, wherein the communicating vessel female joint and the communicating vessel male joint are in butt joint to form the complete underground communicating vessel for the horizontal well.
As shown in fig. 1, the female connector mainly comprises an upper connector 101, a jacket 102, a sealing sleeve 104, a guide shoe plug 106 and the like; the concrete structure is as follows: the seal sleeve 104 and the rubber layer 107 mainly have the functions of wrapping the plug 203 of the male connector of the communicating vessel and realizing the integral sealing function of the tool after butt joint; the guide shoe plug 106 is made of soluble metal and is installed on the outer sleeve 102 through clamp spring connection, the function of the guide shoe plug is to provide guidance for the well completion pipe column a during running in, foreign matters are prevented from entering the tool during the running in, the guide shoe plug 106 can be gradually dissolved in drilling fluid after the tool is completely run in, and after the guide shoe plug 106 is completely dissolved, the internal structure of the communicating vessel female joint 1 is opened to enter a state to be butted.
As shown in fig. 2, the male connector joint mainly comprises a connector 201 and a plug 203, and the male connector joint can play a role of guiding the completion string b to run in, and a clamp spring groove 205 arranged on the plug 203 can be embedded into a clamp spring 105 on the female connector joint to connect the male connector joint 2 and the female connector joint together; meanwhile, the plug 203 can also be matched with a sealing sleeve 104 and a rubber layer 107 on a female joint of the communicating vessel to realize the sealing of the inside and the outside of the tool after the two components of the horizontal well downhole communicating vessel are butted; the circulation holes 204 on the plug 203 can realize internal communication between two components of the horizontal well downhole communicator.
As shown in fig. 3, the horizontal well connector is in a complete state after the female connector of the connector is in butt joint with the male connector of the connector.
Example 6:
the following describes a horizontal well downhole communicating vessel and a well completion operation method of a horizontal well communicating well completed by using a sleeve with a diameter of 139.7mm, and the method comprises the following steps:
the method comprises the following steps: assembling the tool, and assembling the communicating device female connector and the connector male connector in advance.
Step two: after a borehole A of a horizontal well communicated well is drilled, preparation for well dredging, casing running operation and well cementation is made, then casing running operation is started, a communicating vessel female joint, a plurality of casings, a blind plate, a packer and a grading hoop are sequentially put in, then the casings are put in and connected to a well mouth, and the tubular column is a well completion tubular column a.
Step three: and after the casing running operation of the completion pipe string a is completed, pressing the completion pipe string a from the wellhead, and completing the expansion sealing and the opening of the grading hoops of the packer.
Step four: and (5) starting the well cementation operation of the well completion pipe column a, and introducing a collision pressure rubber plug into the well completion pipe column a after cement slurry is injected to replace collision pressure.
Step five: and the guide shoe plug 106 of the communicating vessel female joint starts to be gradually dissolved after the set setting operation is started, and the dissolving is completed before the borehole B of the horizontal well communicating well is drilled, so that the communicating vessel female joint enters a state to be butted.
Step six: and after the well B of the horizontal well communicating well is drilled, preparing for drifting, casing running and well cementation, and ensuring that a drifting drill bit can enter the well A of the horizontal well communicating well until the bottom of the communicating device female joint.
Step seven: and (3) starting casing running operation, sequentially running the male connector of the communicating vessel, a plurality of casings, the blind plate, the packer and the grading hoop, and then running the casing, wherein the casing is a well completion pipe column b.
Step eight: and when the connector male joint on the completion string b is lowered to the position 3m before the butt joint position, lifting the completion string b to record the hanging weight of the completion string b, then lowering the completion string b to the butt joint position, inserting the plug 203 of the connector male joint into the sealing sleeve 204 of the connector female joint, and embedding the clamp spring 107 of the connector female joint into the clamp spring groove 205 of the connector male joint.
Step nine: and if the string b of the well completion is lifted above the original lifting hanging weight, and the string hanging weight is continuously increased, the butt joint of the underground communicating vessel of the horizontal well is successful.
Step ten: and (5) starting the well cementation operation of the well completion pipe column b, and introducing a collision pressure rubber plug into the well completion pipe column a after cement slurry is injected to replace collision pressure.
Step eleven: and respectively putting mill shoes into the completion pipe string a and the completion pipe string b through small drill rods, and drilling out the grading hoops and the blind plates in the two completion pipe strings.
Step twelve: and after the drilling and plugging of the two pipe columns are finished, the horizontal well bores are communicated to form a complete horizontal well communicating well completion pipe column c.
Claims (9)
1. A horizontal well downhole communicating vessel comprises a communicating vessel female joint and a communicating vessel male joint; the method is characterized in that:
the communicating device female joint comprises an upper joint [101], a jacket [102], a sealing sleeve [104] and a guide shoe plug [106 ]; the upper part of an upper joint [101] of a communicating device female joint is provided with a connecting thread, an outer sleeve [102] is positioned at the lower part of the upper joint [101], a sealing sleeve [104] is fixed in the outer sleeve [102] in a sealing way, the upper joint [101] and the sealing sleeve [104] are of hollow structures, a guide shoe plug [106] is fixed at the lower part of the outer sleeve [102] in a sealing way and plugs the upper joint [101] and the sealing sleeve [104] of hollow structures, and the guide shoe plug [106] is made of soluble materials;
the male connector comprises a connector [201] and a plug [203 ]; wherein, the upper part of the connector [201] is provided with connecting threads, the plug [203] and the connector [201] are of a hollow structure, the lower part of the plug [203] is blocked, a circulating space [204] is arranged in the circumferential direction, and the plug [203] seals and fixes the lower part of the connector [201 ];
the connector female joint sealing sleeve [104] and the plug [203] of the connector male joint form axial insertion sealing fit, and the connector female joint and the connector male joint form axial locking fit.
2. The horizontal well downhole communicator of claim 1, wherein: the communicating device female joint and the connector male joint form axial locking fit through a snap spring [105] and a snap spring groove [205] which are arranged on the contact surface of the outer sleeve [102] and the plug [203 ].
3. The horizontal well downhole communicator of claim 2, wherein: the guide shoe plug [106] is connected and fixed at the lower part of the outer sleeve [102] through a clamp spring [105 ].
4. The horizontal well downhole communicator of claim 1, 2 or 3, wherein: and a wear-resistant sealing layer is arranged in the sealing sleeve [104 ].
5. The horizontal well downhole communicator of claim 4, wherein: and the wear-resistant sealing layer of the sealing sleeve [104] is a vulcanized rubber layer [107 ].
6. The horizontal well downhole communicator of claim 4, wherein: the upper connector [101] and the outer sleeve [102], the connector [201] and the plug [203] are split combined mechanisms connected through threads.
7. The horizontal well downhole communicator of claim 6, wherein: and a sealing element (103) is arranged at the threaded connection position of the upper connector (101) and the outer sleeve (102).
8. A method of operating using the horizontal well downhole communicator of claim 1, comprising:
after the first well hole [ A ] of the horizontal well communicating well is drilled, a communicating vessel female joint is installed at the bottom of a well completion pipe string [ a ], and the well completion pipe string [ a ] is lowered to a preset position;
a guide shoe plug [106] on the female joint of the communicating vessel is dissolved in the drilling fluid, and the completion pipe string [ a ] enters a to-be-butted state after the guide shoe plug [106] is completely dissolved;
after the second well hole [ B ] of the horizontal well communicating well is drilled and communicated with the well hole [ A ], a communicating vessel male joint is arranged at the bottom of a well completion pipe column [ B ];
a well completion pipe string [ b ] is put in, the pipe string is lifted up before the well completion pipe string [ b ] is ready to be butted, the original lifting hanging weight of the well completion pipe string [ b ] is recorded, and then the well completion pipe string [ b ] is continuously put in for butting;
a plug [203] of a male connector of the communicating device is inserted into a sealing sleeve [104] of a female connector at the bottom of a well completion string [ a ], and meanwhile, the female connector of the communicating device and the male connector of the communicating device realize butt joint locking;
and lifting the completion string [ b ] to exceed the original lifting hanging weight, and if the string hanging weight is continuously increased, the butt joint of the communicating vessels is successful to form a completion string [ c ].
9. A method of operating a horizontal well downhole communicator according to any of claims 2-4, comprising:
after the first well hole [ A ] of the horizontal well communicating well is drilled, a communicating vessel female joint is installed at the bottom of a well completion pipe string [ a ], and the well completion pipe string [ a ] is lowered to a preset position;
a guide shoe plug [106] on the female joint of the communicating vessel is dissolved in the drilling fluid, and the completion pipe string [ a ] enters a to-be-butted state after the guide shoe plug [106] is completely dissolved;
after the second well hole [ B ] of the horizontal well communicating well is drilled and communicated with the well hole [ A ], a communicating vessel male joint is arranged at the bottom of a well completion pipe column [ B ];
a well completion pipe string [ b ] is put in, the pipe string is lifted up before the well completion pipe string [ b ] is ready to be butted, the original lifting hanging weight of the well completion pipe string [ b ] is recorded, and then the well completion pipe string [ b ] is continuously put in for butting;
a plug [203] of a male connector [2] of the communicating device is inserted into a sealing sleeve [104] of a female connector [1] at the bottom of a well completion string [ a ], and a clamp spring [105] of the female connector [1] of the communicating device is embedded into a clamp spring groove [205] of the male connector [2] of the communicating device to realize butt joint locking;
and lifting the completion string [ b ] to exceed the original lifting hanging weight, and if the string hanging weight is continuously increased, the butt joint of the communicating vessels is successful to form a completion string [ c ].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910413820.6A CN111946272A (en) | 2019-05-17 | 2019-05-17 | Horizontal well underground communicating vessel and operation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910413820.6A CN111946272A (en) | 2019-05-17 | 2019-05-17 | Horizontal well underground communicating vessel and operation method |
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| CN111946272A true CN111946272A (en) | 2020-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343555A (en) * | 2020-11-24 | 2021-02-09 | 中国海洋石油集团有限公司 | Relay well development method for expanding offshore oil and gas reserve utilization range |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343555A (en) * | 2020-11-24 | 2021-02-09 | 中国海洋石油集团有限公司 | Relay well development method for expanding offshore oil and gas reserve utilization range |
| CN112343555B (en) * | 2020-11-24 | 2022-11-18 | 中国海洋石油集团有限公司 | Relay well development method for expanding offshore oil and gas reserve utilization range |
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