CN202100195U - Minute borehole system for ultra-short radius side drill of continuous oil pipe - Google Patents
Minute borehole system for ultra-short radius side drill of continuous oil pipe Download PDFInfo
- Publication number
- CN202100195U CN202100195U CN2011201841010U CN201120184101U CN202100195U CN 202100195 U CN202100195 U CN 202100195U CN 2011201841010 U CN2011201841010 U CN 2011201841010U CN 201120184101 U CN201120184101 U CN 201120184101U CN 202100195 U CN202100195 U CN 202100195U
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- flexible drive
- joint
- drive shaft
- drive axle
- flexible
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Abstract
The utility model discloses a minute borehole system for an ultra-short radius side drill of a continuous oil pipe, comprising a guider, a flexible drive shaft, a drive motor and a drill head; the flexible drive shaft is arranged in the guider, the drill head is arranged at the output end of the flexible drive shaft, and the drive motor is arranged at the input end of the flexible drive shaft; and the flexible drive shaft comprises more than three drive sections, the drive sections are connected with one another by ball heads, and the drive sections are in surface contact with the ball heads. The ball heads are connected with the drive sections of the flexible drive shaft, and the drive sections are in surface contact with the ball heads, so that the axial area of the flexible drive shaft is enlarged, the service life of the flexible drive shaft is prolonged, and the stability of the device is greatly improved.
Description
Technical field
The utility model relates to a kind of device that is used to improve the small well of sidetracking ultra-short radius of the rate of oil and gas recovery.
Background technology
Super short radial horizontal well is meant a kind of horizontal well that radius of curvature is shorter than conventional short turning radius horizontal well, also is referred to as super short radius horizontal well (Ultrashort Radius Radial Well).The well system of accomplishing this horizontal well is referred to as high energy jet drilling system (Radial Drilling Systems), is called for short RDS.
At present, generally be employed in both at home and abroad and implement sidetracking in the sleeve pipe, this technology is in old well; Take out flow string earlier; Be lowered to power motor, flexible shaft and junk bit tool combinations with oil pipe again, ground pumps into the liquid of certain pressure, and CD-ROM drive motor rotates at a high speed; Motor drives drill bit and rotates at a high speed, and the milling sleeve pipe is windowed.Flexible shaft transmission joint adopts pin to connect in this technology; Because all having passed to, the axial force that flexible shaft bears in sidetracking technology connects on the pin of transmission joint; Pin should bear moment of torsion and bear axial force again, causes down-hole accident so be easy to generate the pin inefficacy.
The utility model content
The technical problem that the utility model will solve provides a kind of drilling miniature borehole on ultra-short radius of coiled tubing system, and this device can improve the stability and the application life of device greatly.
In order to address the above problem, the utility model provides a kind of drilling miniature borehole on ultra-short radius of coiled tubing system to comprise: coiled tubing, guider, flexible drive axle, CD-ROM drive motor and drill bit; Flexible drive axle is installed in the guider, and drill bit is arranged on the output of said flexible drive axle, and CD-ROM drive motor is arranged on the input of said flexible drive axle; Said flexible drive axle comprises the transmission joint that three joints are above, is connected through bulb between the said transmission joint, contacts for face between said transmission joint and the bulb.
Preferably; Said transmission joint comprises top joint, the bottom joint that connects said drill bit that connects said CD-ROM drive motor and is arranged on the above middle segmentum intercalaris of at least one joint between top joint and the bottom joint, the top save with middle segmentum intercalaris between, between the middle segmentum intercalaris and middle segmentum intercalaris be connected through said bulb between the bottom is saved.
The utility model connects the transmission joint of flexible drive axle through adopting bulb, and contact being designed to face between transmission joint and the bulb, thereby has increased the axial area of flexible drive axle, prolongs the application life of flexible drive axle, has improved the stability of installing greatly.It is little to adopt coiled tubing as power transmission shaft a whole set of equipment well site to be taken up an area of, and is more suitable in restricted area of ground condition or offshore platform operation, and has reduced the demand to equipment and manpower, can significantly practice thrift drilling cost.Because continuously pipe need not make up a joint, thus in the process of making a trip circulating mud continuously, minimizing trip time and duty cycle have improved the safety of the speed that makes a trip and operation, avoid the blowout and the lock of tool drilling that possibly cause because of making up a joint.Simultaneously coiled tubing can built-in cable, improve signal with boring transmission, realize well logging during completely.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of flexible drive axle among Fig. 1;
Fig. 3 is the bulb sketch map.
The specific embodiment
Like Fig. 1, shown in 2, the utility model comprises: coiled tubing 1, guider 4, flexible drive axle 5, CD-ROM drive motor 3 and drill bit 6; Flexible drive axle 5 is installed in the guider 4, and drill bit 6 is arranged on the output of flexible drive axle 5, and CD-ROM drive motor 3 is arranged on the input of flexible drive axle 5; Flexible drive axle 5 comprises the transmission joint that three joints are above, is connected through bulb 7 between the transmission joint, contacts for face between transmission joint and the bulb 7.Oil flow in the coiled tubing 1 is rotated CD-ROM drive motor 3, thereby drives flexible drive axle 5 rotations.
The concrete set-up mode of flexible drive axle 5 is like Fig. 2, shown in 3; Above-mentioned transmission saves and comprises that the top that connects CD-ROM drive motor 3 is saved 53, connects the bottom joint 51 of drill bit 6 and is arranged on top joint 53 and the middle segmentum intercalaris 52 more than at least one joint between 51 is saved in the bottom; Between top joint 53 and the middle segmentum intercalaris 52, between the middle segmentum intercalaris 53 and middle segmentum intercalaris 53 be connected through bulb 7 between the bottom saves 51, and the mode that the face that is contacts is connected.Bulb 7 links to each other with bottom joint 51, middle segmentum intercalaris 52 and top joint 53 through pin 54.Like this, when flexible drive axle 5 rotates, because the power that applies is to be dispersed on the entire contact surface, the therefore intensity of flexible drive axle 5 greatly, thus prolonged application life of flexible drive axle 5, and improved the stability of device.
In sum; More than be merely the preferred embodiment of the utility model; It is not the protection domain that is used to limit the utility model; Therefore, any modification of being done within all spirit and principles at the utility model, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (2)
1. a drilling miniature borehole on ultra-short radius of coiled tubing system is characterized in that: comprise coiled tubing, guider, flexible drive axle, CD-ROM drive motor and drill bit; Flexible drive axle is installed in the guider, and drill bit is arranged on the output of said flexible drive axle, and CD-ROM drive motor is arranged on the input of said flexible drive axle; Said flexible drive axle comprises the transmission joint that three joints are above, is connected through bulb between the said transmission joint, contacts for face between said transmission joint and the bulb.
2. the system of claim 1; It is characterized in that: said transmission joint comprises top joint, the bottom joint that connects said drill bit that connects said CD-ROM drive motor and is arranged on the above middle segmentum intercalaris of at least one joint between top joint and the bottom joint, the top save with middle segmentum intercalaris between, between the middle segmentum intercalaris and middle segmentum intercalaris be connected through said bulb between the bottom is saved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201841010U CN202100195U (en) | 2011-06-02 | 2011-06-02 | Minute borehole system for ultra-short radius side drill of continuous oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201841010U CN202100195U (en) | 2011-06-02 | 2011-06-02 | Minute borehole system for ultra-short radius side drill of continuous oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100195U true CN202100195U (en) | 2012-01-04 |
Family
ID=45386211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201841010U Expired - Lifetime CN202100195U (en) | 2011-06-02 | 2011-06-02 | Minute borehole system for ultra-short radius side drill of continuous oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104428481A (en) * | 2012-06-21 | 2015-03-18 | 普拉德研究及开发股份有限公司 | Directional drilling system |
-
2011
- 2011-06-02 CN CN2011201841010U patent/CN202100195U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104428481A (en) * | 2012-06-21 | 2015-03-18 | 普拉德研究及开发股份有限公司 | Directional drilling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120104 |
|
| CX01 | Expiry of patent term |