CN102080512A - Multiposition one-way bypass connection structure for deep-water abandoned well cutting device - Google Patents
Multiposition one-way bypass connection structure for deep-water abandoned well cutting device Download PDFInfo
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- CN102080512A CN102080512A CN2011100009695A CN201110000969A CN102080512A CN 102080512 A CN102080512 A CN 102080512A CN 2011100009695 A CN2011100009695 A CN 2011100009695A CN 201110000969 A CN201110000969 A CN 201110000969A CN 102080512 A CN102080512 A CN 102080512A
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- unidirectional
- deep water
- abandoned well
- access node
- cutter sweep
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Abstract
The invention discloses a multiposition one-way bypass connection structure for a deep-water abandoned well cutting device, which comprises a one-way bypass connection body, a lower communicating pipe, a screw motor load-bearing support and a first non-return valve, wherein the one-way bypass connection body is provided with a shorting water hole and a one-way bypass hole which are connected with each other; the lower communicating pipe and the screw motor load-bearing support form a lower diversion channel which is connected with the one-way bypass hole; the first non-return valve is arranged on the shorting water hole; and a second non-return valve is arranged inside the one-way bypass hole. Due to the adoption of the non-return valves, the opening of the first non-return valve and the closing of the second non-return valve have no effect on the cutting operation. When drilling fluid flows through a middle diversion channel and enters a lower diversion channel, the second non-return valve is opened and the first non-return valve is closed under the gradually increased pressure of the drilling fluid, and hence cement is prevented from entering a screw motor from the lower end of a drilling tool. Therefore, the multiposition one-way bypass connection structure for the deep-water abandoned well cutting device has the advantages of realizing the completion of operations of cutting, salvaging and cementing through the same device, improving the performance of deep-water drilling operations, and reducing the cost of deep-water drilling and mining.
Description
Technical field
The present invention relates to deep water drilling implement field, in particular, improving what relate to is the unidirectional bypass access node of multidigit structure in a kind of deep water abandoned well cutter sweep.
Background technology
In the process of deep water drilling operations such as offshore oil probing, according to an international practice, before not obtaining the approval of national government department, all forbid more than the mud line at well head place, staying any structure.Therefore, remove the outer wellhead that keeps through application individually, most prospect pits all will be with the underwater well head head system from cutting off below the mud line and reclaiming after task is finished, to eliminate the legacy more than the well head place mud line, this just need use deep water abandoned well cutter sweep.
But, surpass 300 meters even 1000 meters or the sea oil drilling and production operation field when darker in the depth of water, present China also is in the starting stage, the domestic special equipment that does not still have independent intellectual property right, what rely on all is to rent external special equipment, has formed the monopolization situation domestic to China; Not only rent and high is used up a large amount of national foreign exchanges, nor is beneficial to the development need of Chinese domestic sea oil drilling and production industry.
Even for the external special equipment that China rents, its cutting and the operation of reclaiming the underwater well head structure are carried out the operation of cementing plug with following drilling rod, also are that subset carries out separate operaton, and cost is higher and efficient is also lower.
Therefore, prior art still haves much room for improvement and develops.
Summary of the invention
The objective of the invention is to, the structure of the unidirectional bypass access node of multidigit in a kind of deep water abandoned well cutter sweep is provided, cutting, salvaging and cementing are finished by same device, improve deep water drilling operation efficient greatly, reduce deep water drilling cost.
Technical scheme of the present invention is as follows: the unidirectional bypass access node of the multidigit structure in a kind of deep water abandoned well cutter sweep wherein, comprises that unidirectional bypass connects body, lower communicating tube, screw motor force-bearing base and first one way valve; Unidirectional bypass connects body and is provided with short circuit hydrophthalmia and the unidirectional by-pass prot that is connected; Form the following flow-guiding channel that is connected with unidirectional by-pass prot between the outer wall of the inwall of lower communicating tube and screw motor force-bearing base; First one way valve is arranged on the short circuit hydrophthalmia, is used for shutoff cement and emerges from the upper end that unidirectional bypass connects body; In unidirectional by-pass prot, be provided with second one way valve, be used to block being communicated with of short circuit hydrophthalmia and following flow-guiding channel.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: first one way valve comprises stifled cover, ball valve and cat net; The stifled short circuit hydrophthalmia upper end that is set on; Cat net is connected the lower end of stifled cover, is arranged in the short circuit hydrophthalmia; Ball valve places in the cat net, and maintains the gap between the stifled cover.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: ball valve is a spheroid; The external diameter of spheroid is greater than the internal diameter of stifled cover via hole, and spheroid adds that external diameter behind the cat net is less than the internal diameter of unidirectional bypass short circuit body.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: the sidewall that unidirectional bypass connects body is provided with a plurality of unidirectional by-pass prots that are interspersed.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: second one way valve comprises spool, valve seat and spring; Spring is arranged on the bottom of spool; Valve seat is threaded in unidirectional bypass and connects on the body; Under the elastic force of spring, spool contacts with valve seat, is used for from the unidirectional by-pass prot of inboard shutoff.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: the sidewall of spool is provided with the through hole that is communicated to the bottom spring eye; Spring eye is connected with the short circuit hydrophthalmia.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: the top of spool is provided with lead; The center of valve seat is provided with pilot hole; Lead fits in the pilot hole.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: connect in unidirectional bypass and to be arranged with the lower seal cap on the body; End at lower communicating tube is welded with lower flange; Lower flange is connected on the lower seal cap via bolt.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: the inwall of lower seal cap is provided with the inboard wall groove that is used to hold sealing ring more than the twice; The lower seal cap end face that is connected with lower flange is provided with the end face groove that is used to hold sealing ring.
The unidirectional bypass access node of multidigit structure in the described deep water abandoned well cutter sweep, wherein: the bottom at the lower seal cap is provided with lower sealing cover; The sidewall of lower sealing cover is provided with the inboard wall groove that is used to hold sealing ring.
The unidirectional bypass access node of multidigit structure in a kind of deep water abandoned well cutter sweep provided by the present invention, owing to adopted one way valve, when cutting operation, be positioned at first one-way valve opens on short circuit hydrophthalmia top, be positioned at second closed check valve on the short circuit hydrophthalmia sidewall, cutting operation do not exerted an influence; And after cutting operation is finished, the drilling fluid that hands down via last flow-guiding channel, flow-guiding channel enters down flow-guiding channel in the warp, under the pressure of the drilling fluid that increases gradually, open second one way valve, drilling fluid enters the short circuit hydrophthalmia and closes first one way valve, has blocked cement and has entered screw motor from the drilling tool lower end; Thereby realized finishing cutting, salvaging and cemented operation, improved the operating efficiency of deep water probing greatly, also reduced the cost of deep water drilling by same device.Especially offshore oil probing field had important practical value.
Description of drawings
Fig. 1 is the unidirectional bypass access node of the multidigit structure sectional view in the deep water abandoned well cutter sweep of the present invention.
Fig. 2 is the local A place enlarged drawing in the unidirectional bypass access node of the present invention composition 1.
The specific embodiment
Below with reference to accompanying drawing, the specific embodiment of the present invention and embodiment are described in detail, described specific embodiment in order to explain the present invention, is not to be used to limit the specific embodiment of the present invention only.
The unidirectional bypass access node of multidigit structure in a kind of deep water abandoned well cutter sweep of the present invention, one of its specific embodiment as shown in Figure 1, comprising: unidirectional bypass connects body 600, lower communicating tube 700, screw motor force-bearing base 800 and first one way valve; Unidirectional bypass connects body 600 and is provided with short circuit hydrophthalmia 610 and the inside and outside unidirectional by-pass prot 620 of connection that perforation is connected up and down; Short circuit hydrophthalmia 610 setting that is connected with unidirectional by-pass prot 620; Between the outer wall of the inwall of lower communicating tube 700 and screw motor force-bearing base 800, and and unidirectional bypass connect between the outer wall on body 600 tops common following flow-guiding channel 780 when forming the confession cementing job that is connected with unidirectional by-pass prot 620; First one way valve is arranged on the short circuit hydrophthalmia 610, is used for shutoff cement and emerges from the upper end that unidirectional bypass connects body 600; In unidirectional by-pass prot 620, be provided with second one way valve, be used to block being communicated with of short circuit hydrophthalmia 610 and following flow-guiding channel 780.When carrying out cutting operation, first one way valve is in the state of opening, and the centre bore of screw motor force-bearing base 800 is connected with the short circuit hydrophthalmia 610 that unidirectional bypass connects; Second one way valve is in closing state, and the following flow-guiding channel 780 that cuts off in the lower communicating tube 700 is connected with the short circuit hydrophthalmia 610 that unidirectional bypass connects.
And before the cementing job time, continue to enter down the drilling fluid of flow-guiding channel 780, increase along with its pressure, open second one way valve, the unidirectional by-pass prot 620 of conducting, drilling fluid enters short circuit hydrophthalmia 610, closes first one way valve, enters the centre bore of screw motor force-bearing base 800 from the upper end of short circuit hydrophthalmia 610 to stop follow-up cement; The following flow-guiding channel 780 of cement from lower communicating tube 700 enters in the short circuit hydrophthalmia 610 that unidirectional bypass connects body 600 and passes in the boring of bottom via unidirectional by-pass prot 620, to carry out the task of cementing plug; Thereby prevented in the cementing process that cement enters the motor of top from the drilling tool lower end, avoided cement heap motor to cause damage.
Compare with existing external deep water abandoned well cutter sweep, the unidirectional bypass access node of multidigit structure in the deep water abandoned well cutter sweep provided by the present invention, owing to adopted one way valve, when cutting operation, be positioned at first one-way valve opens on short circuit hydrophthalmia 610 tops, be positioned at second closed check valve on short circuit hydrophthalmia 610 sidewalls, cutting operation do not exerted an influence; And after cutting operation is finished, the drilling fluid that hands down via last flow-guiding channel, flow-guiding channel enters down flow-guiding channel 780 in the warp, under the pressure of the drilling fluid that increases gradually, open second one way valve, drilling fluid enters short circuit hydrophthalmia 610 and closes first one way valve, has blocked cement and has entered screw motor from the drilling tool lower end; Thereby realized finishing cutting, salvaging and cemented operation, improved the operating efficiency of deep water probing greatly, also reduced the cost of deep water drilling by same device.Especially offshore oil probing field had important practical value.
Compare with existing external cementing plug operation, the unidirectional bypass access node of multidigit structure in the deep water abandoned well cutter sweep that the present invention proposes, because the equipment when having adopted cutting operation carries out cementing job, not only need not change implement, saved material cost, and the dismounting and the replacing time of equipment, the time of having saved Global Operation have greatly been avoided.Especially offshore oil probing field had important practical value.
In the preferred implementation of the unidirectional bypass access node of the multidigit structure in deep water abandoned well cutter sweep of the present invention, as shown in Figure 1, first one way valve comprises stifled cover 920, ball valve 900 and cat net 910; Stifled cover 920 is arranged on short circuit hydrophthalmia 610 upper ends; Cat net 910 is connected the lower end of stifled cover 920, is arranged in the short circuit hydrophthalmia 610; Ball valve 900 places in the cat net 910, and maintains the gap between the stifled cover 920, is convenient to cut with the short circuit hydrophthalmia 610 that centre bore and the unidirectional bypass of conducting screw motor force-bearing base 800 connects.
Be preferably, ball valve 900 is a spheroid, for example: Metal Ball such as steel ball, perhaps nonmetal ball such as stone ball; The external diameter of spheroid is greater than the internal diameter of stifled cover 920 via holes, and spheroid adds that external diameter behind the cat net 910 is less than the internal diameter of unidirectional bypass short circuit body.Cat net 910 specifically can adopt steel mesh to be fixed on the lower end of stifled cover 920.Utilize the inner face of screw motor force-bearing base 800 to push down stifled cover 920.
What deserves to be mentioned is that first one way valve is not limited to the structure of ball valve 900, also can be other forms of one-way valve structures such as cover plate valve, and so-called cover plate valve, concrete structure are the one-way valve structures that replaces spheroid with cover plate.
Preferably, the unidirectional bypass sidewall that connects body 600 is provided with a plurality of unidirectional by-pass prots 620 that are interspersed.Be interspersed, be not arranged on the same horizontal plane, can improve the structural performance that unidirectional bypass connects, be not easy to fracture from unidirectional by-pass prot 620.
Further, as shown in Figure 2, second one way valve comprises spool 630, valve seat 650 and spring 630; Spring 630 is arranged on the bottom of spool 630; Valve seat 650 is threaded in unidirectional bypass and connects on the body 600; Under the elastic force of spring 630, spool 630 contacts with valve seat 650, is used for from the unidirectional by-pass prot 620 of inboard shutoff.Spring 630 can adopt cylindrical compression spring 630.
Concrete, can be provided with the through hole 631 that is communicated to the bottom spring eye on the sidewall of spool 630; Spring eye is connected with short circuit hydrophthalmia 610.
Preferably, the top of spool 630 is provided with lead; The center of valve seat 650 is provided with pilot hole; Lead fits in the pilot hole.
Further, as shown in Figure 1, connect in unidirectional bypass and to be arranged with lower seal cap 640 on the body 600; Be welded with lower flange 710 in the end of lower communicating tube 700; Lower flange 710 is connected on the lower seal cap 640 via bolt.
Concrete, the inwall of lower seal cap 640 is provided with the inboard wall groove that is used to hold sealing ring more than the twice; Lower seal cap 640 end faces that are connected with lower flange 710 are provided with the end face groove that is used to hold sealing ring.
Be preferably, be provided with lower sealing cover 650 in the bottom of lower seal cap 640; The sidewall of lower sealing cover 650 is provided with the inboard wall groove that is used to hold sealing ring.
Industrial applicibility
In deep water probing and drilling field, multidigit bypass short circuit structure and cementing plug operational method thereof in the deep water abandoned well cutter sweep of the present invention are independent research fully, can be described as to have filled up a Chinese domestic blank; And the China sea water front is longer, and the marine site of bordering on the sea is vast, for the development of the domestic sea oil drilling and production industry of China, and the monopoly position of breaking external colleague, all have important intellectual property strategy and be worth.
Should be understood that; the above only is preferred embodiment of the present invention; be not sufficient to limit technical scheme of the present invention; for those of ordinary skills; within the spirit and principles in the present invention; can be increased and decreased according to the above description, replacement, conversion or improvement; for example; substitute ball valve 900 in first one way valve with the cover plate valve; replace second one way valve etc. in the unidirectional by-pass prot 620 with other one way valves; and all these increases and decreases, replacement, conversion or improve after technical scheme, all should belong to the protection domain of claims of the present invention.
Claims (10)
1. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep is characterized in that, comprises that unidirectional bypass connects body, lower communicating tube, screw motor force-bearing base and first one way valve; Unidirectional bypass connects body and is provided with short circuit hydrophthalmia and the unidirectional by-pass prot that is connected; Form the following flow-guiding channel that is connected with unidirectional by-pass prot between the outer wall of the inwall of lower communicating tube and screw motor force-bearing base; First one way valve is arranged on the short circuit hydrophthalmia, is used for shutoff cement and emerges from the upper end that unidirectional bypass connects body; In unidirectional by-pass prot, be provided with second one way valve, be used to block being communicated with of short circuit hydrophthalmia and following flow-guiding channel.
2. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 1, it is characterized in that: first one way valve comprises stifled cover, ball valve and cat net; The stifled short circuit hydrophthalmia upper end that is set on; Cat net is connected the lower end of stifled cover, is arranged in the short circuit hydrophthalmia; Ball valve places in the cat net, and maintains the gap between the stifled cover.
3. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 2, it is characterized in that: ball valve is a spheroid; The external diameter of spheroid is greater than the internal diameter of stifled cover via hole, and spheroid adds that external diameter behind the cat net is less than the internal diameter of unidirectional bypass short circuit body.
4. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 1 is characterized in that: the sidewall that unidirectional bypass connects body is provided with a plurality of unidirectional by-pass prots that are interspersed.
5. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 1, it is characterized in that: second one way valve comprises spool, valve seat and spring; Spring is arranged on the bottom of spool; Valve seat is threaded in unidirectional bypass and connects on the body; Under the elastic force of spring, spool contacts with valve seat, is used for from the unidirectional by-pass prot of inboard shutoff.
6. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 5 is characterized in that: the sidewall of spool is provided with the through hole that is communicated to the bottom spring eye; Spring eye is connected with the short circuit hydrophthalmia.
7. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 5, it is characterized in that: the top of spool is provided with lead; The center of valve seat is provided with pilot hole; Lead fits in the pilot hole.
8. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 1 is characterized in that: connect in unidirectional bypass and be arranged with the lower seal cap on the body; End at lower communicating tube is welded with lower flange; Lower flange is connected on the lower seal cap via bolt.
9. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 8, it is characterized in that: the inwall of lower seal cap is provided with the inboard wall groove that is used to hold sealing ring more than the twice; The lower seal cap end face that is connected with lower flange is provided with the end face groove that is used to hold sealing ring.
10. the unidirectional bypass access node of the multidigit structure in the deep water abandoned well cutter sweep according to claim 8, it is characterized in that: the bottom at the lower seal cap is provided with lower sealing cover; The sidewall of lower sealing cover is provided with the inboard wall groove that is used to hold sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110000969 CN102080512B (en) | 2011-01-05 | 2011-01-05 | Multiposition one-way bypass connection structure for deep-water abandoned well cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110000969 CN102080512B (en) | 2011-01-05 | 2011-01-05 | Multiposition one-way bypass connection structure for deep-water abandoned well cutting device |
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| Publication Number | Publication Date |
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| CN102080512A true CN102080512A (en) | 2011-06-01 |
| CN102080512B CN102080512B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110000969 Active CN102080512B (en) | 2011-01-05 | 2011-01-05 | Multiposition one-way bypass connection structure for deep-water abandoned well cutting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505557A (en) * | 2018-12-19 | 2019-03-22 | 贵州高峰石油机械股份有限公司 | A kind of device for being completed at the same time sub-sea drilled wells and salvaging with capping operation |
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| CN85106208A (en) * | 1985-08-19 | 1987-02-18 | 马来亚大学 | Pump |
| EP0679796A2 (en) * | 1994-04-29 | 1995-11-02 | Halliburton Company | Ball valve |
| EP1138873A1 (en) * | 2000-03-30 | 2001-10-04 | Halliburton Energy Services, Inc. | System and method for communicating hydraulic control to a wireline retrievable downhole device |
| CN2820441Y (en) * | 2005-06-06 | 2006-09-27 | 中国海洋石油总公司 | Hydropower self rotary controllable abradant jet flow cutting device |
| CN101550811A (en) * | 2009-05-08 | 2009-10-07 | 深圳远东石油工具有限公司 | Lifting full water depth outer suspension clutch unlock underwater well head cutting recovery combined tool |
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2011
- 2011-01-05 CN CN 201110000969 patent/CN102080512B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106208A (en) * | 1985-08-19 | 1987-02-18 | 马来亚大学 | Pump |
| EP0679796A2 (en) * | 1994-04-29 | 1995-11-02 | Halliburton Company | Ball valve |
| EP1138873A1 (en) * | 2000-03-30 | 2001-10-04 | Halliburton Energy Services, Inc. | System and method for communicating hydraulic control to a wireline retrievable downhole device |
| CN2820441Y (en) * | 2005-06-06 | 2006-09-27 | 中国海洋石油总公司 | Hydropower self rotary controllable abradant jet flow cutting device |
| CN101550811A (en) * | 2009-05-08 | 2009-10-07 | 深圳远东石油工具有限公司 | Lifting full water depth outer suspension clutch unlock underwater well head cutting recovery combined tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505557A (en) * | 2018-12-19 | 2019-03-22 | 贵州高峰石油机械股份有限公司 | A kind of device for being completed at the same time sub-sea drilled wells and salvaging with capping operation |
| CN109505557B (en) * | 2018-12-19 | 2023-10-31 | 贵州高峰石油机械股份有限公司 | Device for simultaneously completing fishing and well sealing operation of submarine oil well |
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| CN102080512B (en) | 2013-03-20 |
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Owner name: CNOOC RESEARCH INSTITUTE SHENZHEN FAR EAST OIL DRI Effective date: 20130401 Owner name: CHINA MARINE PETROLEUM GENERAL CO. Free format text: FORMER OWNER: SHENZHEN FAR EAST OIL DRILLING ENGINEERING CO., LTD. Effective date: 20130401 |
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Effective date of registration: 20130401 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Patentee after: Shenzhen Far East Oil Drilling Engineering Co., Ltd. Address before: 518068 Guangdong city of Shenzhen province Nanshan District Chiwan Oil Mansion, 15 Floor Patentee before: Shenzhen Far East Oil Drilling Engineering Co., Ltd. |