CN201125690Y - Horizontal well horizontal segment increased slanting core drill tool combination - Google Patents
Horizontal well horizontal segment increased slanting core drill tool combination Download PDFInfo
- Publication number
- CN201125690Y CN201125690Y CNU2007203054920U CN200720305492U CN201125690Y CN 201125690 Y CN201125690 Y CN 201125690Y CN U2007203054920 U CNU2007203054920 U CN U2007203054920U CN 200720305492 U CN200720305492 U CN 200720305492U CN 201125690 Y CN201125690 Y CN 201125690Y
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- core
- screw rod
- taking
- drill bit
- straight screw
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Abstract
The utility model discloses a horizontal well horizontal section increased core-taking drilling assembly, which comprises a drill bit (1), a core-taking tube (3), a safety joint (4), a straight screw rod (5), an LWD instrument (6), a non-magnetism drill collar (7), a drill rod (8), and stabilizers (2, 2A) which are arranged between the drill bit (1) and the core-taking tube (3) and between the straight screw rod (5) and the LWD instrument (6), the various parts are in screwed connection in sequence according to fore-mentioned order. The drilling assembly may carry on path adjustment along with the core-taking section, realize the continuous core-taking work, and guarantee the harvest rate of a rock core.
Description
Technical field:
The utility model relates to the petroleum drilling engineering core bit.
Background technology:
Original horizontal well horizontal segment core bit combination is a cover angle holding assembly, the track angle of inclination that is promptly got out is fixed, when track need be adjusted when increasing hole deviation, often to trip out former drilling tool, be lowered to the drilling assembly (not being with coring tube) that has single curved screw rod, carry out increasing hole angle, when reaching predetermined hole angle, pull out of hole again and exchange the core drilling assembly for.Change single curved screw rod institute drilling well section owing to can't be with coring tube, this well section just can not be got core, interruption occurred, promptly can't realize continous sampling, can directly have influence on the core yield rate like this, is difficult to satisfy the geology designing requirement.
The utility model content:
In order to solve existing technical problem in the background technology, the utility model provides a kind of can increase the drilling assembly of carrying out increasing hole angle with getting core well section angle of inclination, and this drilling assembly can realize the continous sampling operation, thereby guarantees the yield rate of core.
For solving the problems of the technologies described above, horizontal well horizontal segment increasing hole angle core bit combination of the present utility model, comprise drill bit, coring tube, safety joint, straight screw rod, the LWD instrument, non magnetic drill collar, drilling rod, also comprising stabilizer between drill bit and the coring tube and between straight screw rod and the LWD instrument, wherein each parts is threaded successively according to aforementioned order.
The utlity model has following beneficial effect: because on original drilling assembly, increase by two stabilizers, two stabilizers play point action, utilize the principle of lever, by changing the distance of adjusting between two stabilizers, can change the stress of bottomhole assembly, make coring tube and straight screw rod under the effect of the pressure of the drill, produce flexural deformation, thereby make drill bit produce skew force, reach the purpose of increasing hole angle.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
1, drill bit, 2,2A, stabilizer, 3, coring tube, 4, safety joint, 5, straight screw rod, 6, the LWD instrument, 7, non magnetic drill collar, 8, drilling rod
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, horizontal well horizontal segment increasing hole angle core bit combination of the present utility model, comprise drill bit (1), coring tube (3), safety joint (4), straight screw rod (5), LWD instrument (6), non magnetic drill collar (7), drilling rod (8), also comprising stabilizer (2,2A) between drill bit (1) and the coring tube (3) and between straight screw rod (5) and the LWD instrument (6), wherein each parts is threaded successively according to aforementioned order.
Horizontal well horizontal segment bistable device increasing hole angle core bit is combined in and drops into on-the-spot the use in August, 2006.The drilling assembly of this technology is carried out field trial at flat 35 wells of apricot 6-1-.Bistable device increasing hole angle core bit makes up 5 the well sections of going into the well altogether, 82.08 meters on accumulative total drilling depth, the oblique performance difference of the real drilling well of drilling tool in these 5 sections, distribution is 1.81～5.03 °/100m, average 3.57 °/100m of rate of deviation, predict 3.29 °/100m of average rate of deviation, error is-7.84%.Realization horizontal well horizontal segment is got the purpose that increases hole deviation in the core process.176.39 meters of the flat the longest continuous coring well of the 35 wells sections of apricot 6-1-, the total yield 99.15% of coring, continous sampling well segment length creates domestic record.
Claims (1)
1, a kind of horizontal well horizontal segment increasing hole angle core bit combination, comprise drill bit (1), coring tube (3), safety joint (4), straight screw rod (5), LWD instrument (6), non magnetic drill collar (7), drilling rod (8) is characterized in that: also comprising stabilizer (2,2A) between drill bit (1) and the coring tube (3) and between straight screw rod (5) and the LWD instrument (6), wherein each parts is threaded successively according to aforementioned order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203054920U CN201125690Y (en) | 2007-11-20 | 2007-11-20 | Horizontal well horizontal segment increased slanting core drill tool combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203054920U CN201125690Y (en) | 2007-11-20 | 2007-11-20 | Horizontal well horizontal segment increased slanting core drill tool combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125690Y true CN201125690Y (en) | 2008-10-01 |
Family
ID=39999161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203054920U Expired - Fee Related CN201125690Y (en) | 2007-11-20 | 2007-11-20 | Horizontal well horizontal segment increased slanting core drill tool combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125690Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994496A (en) * | 2010-09-17 | 2011-03-30 | 北京奥瑞安能源技术开发有限公司 | Method for treating drilling tool jamming accident in coalbed methane multi-branch horizontal well |
| CN110388190A (en) * | 2019-08-13 | 2019-10-29 | 中国海洋石油集团有限公司 | A kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery |
-
2007
- 2007-11-20 CN CNU2007203054920U patent/CN201125690Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994496A (en) * | 2010-09-17 | 2011-03-30 | 北京奥瑞安能源技术开发有限公司 | Method for treating drilling tool jamming accident in coalbed methane multi-branch horizontal well |
| CN101994496B (en) * | 2010-09-17 | 2013-06-19 | 北京奥瑞安能源技术开发有限公司 | Method for treating drilling tool jamming accident in coalbed methane multi-branch horizontal well |
| CN110388190A (en) * | 2019-08-13 | 2019-10-29 | 中国海洋石油集团有限公司 | A kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery |
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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: 20081001 Termination date: 20121120 |