CN201050340Y - Double-walled drilling faucet - Google Patents
Double-walled drilling faucet Download PDFInfo
- Publication number
- CN201050340Y CN201050340Y CNU2007200123755U CN200720012375U CN201050340Y CN 201050340 Y CN201050340 Y CN 201050340Y CN U2007200123755 U CNU2007200123755 U CN U2007200123755U CN 200720012375 U CN200720012375 U CN 200720012375U CN 201050340 Y CN201050340 Y CN 201050340Y
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- China
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- inner core
- valve base
- valve seat
- top connection
- pin
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- Expired - Fee Related
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Abstract
A double-wall drilling cock for the oil drilling operation is composed of a body, a lower joint of inner tube, rubber sealing rings, a limit pin of the lower valve seat, a valve, a fixed shaft, a limit pin of the upper valve seat, an upper joint of inner tube, an upper valve seat, a drive pin, a limit ring and a lower valve seat. The upper and lower joints of inner tube are in threaded connection, and the upper joint of inner tube is in threaded connection with the body. The lower valve seat is installed on the designed position, and the limit pin of the lower valve seat is used to go around the upper joint of inner tube for the spacing of 120 degree angle. The valve is disposed on a preset position, and the fixed shaft is installed. Afterwards the upper valve seat is rotated in. The limit pin of the upper valve seat is used to go around the upper joint of inner tube for the spacing of 120 degree angle. The limit pin of the lower valve seat, the fixed shaft, the limit pin of the upper valve seat and the upper joint of inner tube are in threaded connection. The drive pin is spaced through the limit ring, and the rubber sealing rings are used for the sealing between each part. Therefore, with this cock, the problem existed in the prior art that the well bore trajectory cannot be controlled in the wireless or cable logging-while-drilling is resolved. The utility model can be applied in the oil drilling operation.
Description
Technical field:
The utility model relates to a kind of double-walled well drilling cock that a kind of oil field petroleum drilling operation is used.
Background technology:
Oil field development at present enters the middle and later periods, because serious and primary stratum in debt, piece stratum, old liberated area low-pressure coefficient has brought problems such as leakage, bit freezing, oil layer pollution to drilling engineering.Low-pressure drilling technology is to solve one of important drilling mode of this class strata drilling difficult problem, the air-filling well-drilling technology is a branch of low-pressure drilling technology, but in application process, also there is certain problem: because need use ball-and-seat from the standpipe gas injection, and be the gas-liquid two-phase stream mode in the drilling rod, make and to use the well dynamic instrument in the directional well, can not utilize wired drilling instrument and MWD to carry out hole trajectory control.Therefore, we study the double-wall pipe low-pressure drilling technology, utilize a kind of special drilling rod with two passages, utilize central tube normally to pump into mud, and the annular space that utilizes central tube and outer tube injects air between the annular space of the drilling rod and the borehole wall, can avoid the gas-liquid mixed state in drill string like this and use ball-and-seat, make wireless or wired drilling become feasible the use of hole trajectory control and mud motor.Excessively be sprayed on the rig floor and blowout takes place when removing double-wall drill pipe for preventing to dismantle in the double-walled hexagonal kelly process mud, cause that rig floor is unclean and remove the dangerous accident of drilling well, and existing common cock is a single layer structure incompatibility double-walled well drilling technology, need a kind of can being connected on kelly bar and the double-wall drill pipe of development, the above mud of controlling party drilling rod sprays and the cock that prevents to remove the double-wall drill pipe blowout is a kind of double-walled well drilling cock.
The utility model content:
The purpose of this utility model is to provide a kind of double-walled well drilling cock.It has solved the air-filling well-drilling that exists in the prior art and need use from the standpipe gas injection and be the gas-liquid two-phase state in ball-and-seat and the drilling rod, makes to use the problem that wired drilling instrument and MWD carry out hole trajectory control and mud motor in the directional well.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of double-walled well drilling cock is made up of body, inner core lower contact, rubber seal, lower valve base position-limitting pin, valve body, fixed axis, upper valve base position-limitting pin, inner core top connection, upper valve base, drive pin, spacing ring, lower valve base; Inner core top connection and inner core lower contact are threaded, the inner core top connection is threaded with body and is spacing, and before it connects, lower valve base is installed to design attitude, being hexagonal angle with 3 lower valve base position-limitting pins around the inner core top connection carries out spacing, the valve body that spheroid perforation is constituted is put into the precalculated position then, and the fixed axis of packing into carries out spacing, reinstall upper valve base, being hexagonal angle with 3 upper valve base position-limitting pins around the inner core top connection carries out spacing, the lower valve base position-limitting pin, fixed axis, the upper valve base position-limitting pin is threaded with the inner core top connection: in the inner core top connection with after body is connected, change drive pin over to precalculated position, carry out spacing with spacing ring to drive pin, prevent that it from outwards coming off, seal with rubber seal between each parts.Between whole cock drilling rod and double-walled hexagonal kelly, the body box is connected with the double-walled hexagonal kelly, and inner core top connection and top double-walled hexagonal kelly inner core lower contact form the plug-in type sealing; The body pin thread is connected with the box of bottom double-wall drill pipe, and the top connection of inner core lower contact and bottom double-wall drill pipe inner core forms the plug-in type sealing, thereby forms the individual passage of gas phase and liquid phase.During the work of double-walled ball-and-seat, when removing double-wall drill pipe, when discovery has blowout unusual: the double-walled well drilling cock is connected on the double-wall drill pipe, with the drive pin half-twist, make the through hole of valve body be in level with special tool, thereby realize obstruct the center slurry channel, prevent that mud from going out from centre bore is counter, after connecting kelly bar, realize the connected state of centre bore in that drive pin is rotated return, thereby realize processing and control blowout; Process makes up a joint: the double-walled well drilling cock has been connected on the double-walled hexagonal kelly when drilling well, dismantle before double-walled kelly bar and the double-wall drill pipe, first with special tool with the drive pin half-twist, make the through hole of valve body be in level, to the obstruct of kelly bar center slurry channel, the above mud of kelly bar can not spray with shackle, connect single after, after kelly bar and drilling rod connect, again drive pin is rotated return, central passage is communicated with.
The beneficial effects of the utility model are relatively simple for structure, are suitable for; This cock can the above mud of controlling party drilling rod sprays and generation blowout when preventing to remove double-wall drill pipe; This cock also can be avoided the gas-liquid mixed state in drill string and use ball-and-seat, makes with the use of boring hole trajectory control and mud motor and becomes feasible; Keep the rig floor cleaning, do not pollute rig floor.
Description of drawings:
Accompanying drawing is an overall structure schematic diagram of the present utility model.
Among the figure: 1, body, 2, the inner core lower contact, 3, rubber seal, 4, lower valve base position-limitting pin 5, valve body, 6, fixed axis, 7, the upper valve base position-limitting pin, 8, the inner core top connection, 9, upper valve base, 10, drive pin, 11, spacing ring, 12, lower valve base.
The specific embodiment:
As shown in the figure: a kind of double-walled well drilling cock is by body 1, inner core lower contact 2, rubber seal 3, lower valve base position-limitting pin 4, valve body 5, fixed axis 6, upper valve base position-limitting pin 7, inner core top connection 8, upper valve base 9, drive pin 10, spacing ring 11, lower valve base 12 is formed: inner core top connection 8 and inner core lower contact 2 are threaded, inner core top connection 8 is threaded with body 1 and is spacing, and before it connects, lower valve base 12 is installed to design attitude, being hexagonal angle with 3 lower valve base position-limitting pins 4 around inner core top connection 8 carries out spacing, the valve body 5 that spheroid perforation is constituted is put into the precalculated position then, and the fixed axis 6 of packing into carries out spacing, changing upper valve base 9 over to, being hexagonal angle with 3 upper valve base position-limitting pins 7 around inner core top connection 8 carries out spacing, lower valve base position-limitting pin 4, fixed axis 6, upper valve base position-limitting pin 7 is threaded with inner core top connection 8: in inner core top connection 8 with after body 1 is connected, change drive pin 10 over to precalculated position, carry out spacing with 11 pairs of drive pins of spacing ring 10, prevent that it from outwards coming off, seal with rubber seal 3 between each parts.
Claims (1)
1. a double-walled well drilling cock is by body (1), inner core lower contact (2), rubber seal (3), lower valve base position-limitting pin (4), valve body (5), fixed axis (6), upper valve base position-limitting pin (7), inner core top connection (8), upper valve base (9), drive pin (10), spacing ring (11), lower valve base (12) is formed, it is characterized in that: inner core top connection (8) and inner core lower contact (2) are threaded, inner core top connection (8) is threaded with body (1) and is spacing, and before it connects, lower valve base (12) is installed to design attitude, being hexagonal angle with 3 lower valve base position-limitting pins (4) around inner core top connection (8) carries out spacing, the valve body (5) that spheroid perforation is constituted is put into the precalculated position then, and the fixed axis 6 of packing into carries out spacing, reinstall upper valve base (9), being hexagonal angle with 3 upper valve base position-limitting pins (7) around inner core top connection (8) carries out spacing, lower valve base position-limitting pin (4), fixed axis (6), upper valve base position-limitting pin (7) is threaded with inner core top connection (8): in inner core top connection (8) with after body (1) is connected, change drive pin (10) over to precalculated position, with spacing ring (11) drive pin (10) is carried out spacing, between each parts with rubber seal (3) sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200123755U CN201050340Y (en) | 2007-05-29 | 2007-05-29 | Double-walled drilling faucet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200123755U CN201050340Y (en) | 2007-05-29 | 2007-05-29 | Double-walled drilling faucet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050340Y true CN201050340Y (en) | 2008-04-23 |
Family
ID=39336824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200123755U Expired - Fee Related CN201050340Y (en) | 2007-05-29 | 2007-05-29 | Double-walled drilling faucet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050340Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134114A (en) * | 2015-10-10 | 2015-12-09 | 中国石油集团川庆钻探工程有限公司 | Reverse circulation gas drilling tool combination structure |
| CN107461162A (en) * | 2017-07-07 | 2017-12-12 | 成都西南石大石油工程技术有限公司 | A kind of gas lift reverse circulation drilling well method and BHA device |
| CN112160710A (en) * | 2020-09-09 | 2021-01-01 | 中国石油天然气集团有限公司 | Power tap control device |
-
2007
- 2007-05-29 CN CNU2007200123755U patent/CN201050340Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134114A (en) * | 2015-10-10 | 2015-12-09 | 中国石油集团川庆钻探工程有限公司 | Reverse circulation gas drilling tool combination structure |
| CN107461162A (en) * | 2017-07-07 | 2017-12-12 | 成都西南石大石油工程技术有限公司 | A kind of gas lift reverse circulation drilling well method and BHA device |
| CN112160710A (en) * | 2020-09-09 | 2021-01-01 | 中国石油天然气集团有限公司 | Power tap control device |
| CN112160710B (en) * | 2020-09-09 | 2022-05-17 | 中国石油天然气集团有限公司 | Power tap control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20110529 |