CN103061691A - Anti-deviation drill collar - Google Patents
Anti-deviation drill collar Download PDFInfo
- Publication number
- CN103061691A CN103061691A CN201110325065XA CN201110325065A CN103061691A CN 103061691 A CN103061691 A CN 103061691A CN 201110325065X A CN201110325065X A CN 201110325065XA CN 201110325065 A CN201110325065 A CN 201110325065A CN 103061691 A CN103061691 A CN 103061691A
- Authority
- CN
- China
- Prior art keywords
- wiper
- drill collar
- wiper block
- block
- deviation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to an anti-deviation drill collar and belongs to the field of drilling tools of oil well drilling. The anti-deviation drill collar comprises upper end threads, a drill collar body, lower end threads and a wiper block. A wrap angle of each wiper block is 120-180 degrees. The wiper block comprises an upper wiper block, a middle wiper block, and a lower wiper block. The three wiper blocks are arranged in a staggered mode sequentially in the circumferential direction with angles among one another being 120 degrees. The three wiper blocks are distributed axially and equidistantly. The three wiper blocks are processed into a whole with the drill collar body. Each wiper block is composed of two wiper units which are distributed symmetrically. Holes are drilled in the wiper units, and abrasion-resistant cemented carbide cylinders are arranged on the wiper units in an inlaying mode. The wrap angle of each two wiper units of each wiper block is 24 degrees. The anti-deviation drill collar is simple in structure, facilitates site operation, can work continuously under wells for a long time, and can adapt to the anti-deviation drilling of long continuous tilted stratum with a small angle.
Description
Technical field
The present invention relates to the petroleum drilling well drilling tool field, especially a kind of can anti-oblique drill collar.
Background technology
All the time, the deviation prevention and fast in the drilling engineering is a stubborn problem all the time., Bohai Sea hollow such as Shengli Oil Field Northern Dongying Area Yan Jia abrupt slope, south slope of Huimin sag, Bin Xian abrupt slope, blue or green south southern hollow, to face south hollow etc. all be easily tiltedly to distinguish.The tilted stratum of these structures has three main characteristics, and the one, the inclination angle is generally less, generally about 10 °, the 2nd, distribute wide, the 3rd, continuous segment length, most more than 1000m, reach individually 3000m.According to statistics over nearly 5 years 132 mouthfuls of above area construction prospect pits, because stratigraphic dip causes 70 mouthfuls of hole deviations, account for 53.03%; Hang up and beat 55 mouthfuls of well straightenings, rent 15 mouthfuls of directional well instrument well straightenings, hang up and beat the well straightening drilling speed and reduce by 54%, every mouthful of well of directional well instrument well straightening seriously restricted bit speed about 12 days, and drilling cost increases, drilling benefit is low, and hole curvature sharply changes, and has affected later stage well logging construction and cementing quality.
Although it is that vertical drill system expense is too high that present state-of-the-art vertical drilling system can be realized deviation prevention and fast, problem well, from the angle of economy, it is more suitable for the high steep structure in wide-angle.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention for domestic and international large section continuous tilt stratum of low-angle provide a kind of simple in structure, be convenient to execute-in-place, can be continuously for a long time underground work, can adapt to large section continuous tilt stratum of low-angle can anti-oblique drill collar, guaranteeing under the not oblique prerequisite, further liberating the pressure of the drill, improve drilling speed.
The present invention realizes by mode by the following technical solutions:
A kind of can anti-oblique drill collar, comprise upper end screw thread, drill collar body, lower end screw thread.It is 120 °-180 ° wiper block that three groups of cornerites are arranged on the drill collar body.Three groups of wiper blocks circumferentially are 120 ° and stagger successively, and axially equidistantly uniform.Wiper block and drill collar body are processed into one.
This can anti-oblique drill collar preferred 150 ° of wiper block cornerite.Wiper block is comprised of two symmetrical righting unit, boring and insert wearable hard alloy cylinder on the righting unit.Cornerite between the two righting unit of wiper block is 24 °.
This can have the following new design feature by anti-oblique drill collar: the wiper block that at three groups of cornerites of common drill collar increase is 150 °, three groups of wiper blocks circumferentially are 120 ° and stagger successively, simultaneously axially equidistantly uniform, middle centralizer need be positioned at drill collar middle part, drill collar up and down two ends reserve slips, safety slip and on unload clasp forceps length.
Each group wiper block of three groups of wiper blocks is comprised of two symmetrical righting unit, and the cornerite between the two righting unit is 24 °, the gear type wearable hard alloy cylinder of boring and insert Ф 12mm * 8mm on the righting unit.Righting unit upper/lower terminal and left and right bilateral are processed rational chamfering to guarantee downhole safety.Except gear type wearable hard alloy cylinder, this can be the integrated design by anti-oblique drill collar, is conducive to downhole safety.Other parameter of drill collar and requirement meet SY/T5144-2007 " drill collar " standard.
The invention has the beneficial effects as follows: anti-oblique drill collar of the present invention and vertical drilling tool structure compared be simple, be convenient to execute-in-place, can be continuously for a long time in underground work, can adapt to anti-oblique the creeping on large section continuous tilt stratum of low-angle, further liberate the pressure of the drill, improve drilling speed.
Description of drawings
Fig. 1 is the anti-oblique drill collar structural representation of a kind of embodiment.
Fig. 2 is anti-oblique drill collar wiper block and cross section, the righting unit enlarged diagram among Fig. 1.
Fig. 3 is that the B of Fig. 2 is to view.
Among the figure: 1. upper end screw thread; 2. go up wiper block; 3. middle wiper block; 4. descend wiper block; 5. drill collar body; 6. lower end screw thread; 7. righting unit; 8. cylindrical hole.
The specific embodiment
Now the invention will be further described in conjunction with specification drawings and specific embodiments.
With reference to accompanying drawing 1, can comprise upper end screw thread 1, drill collar body 5, lower end screw thread 6 by anti-oblique drill collar, be 150 ° wiper block at three groups of cornerites of drill collar body 5 increases, three groups of wiper blocks circumferentially are 120 ° and stagger successively, and are simultaneously axially equidistantly uniform.Centralizer need be positioned at drill collar middle part, drill collar up and down two ends reserve slips, safety slip and on unload clasp forceps length.Upper end screw thread 1 is connected with the top drill collar, and lower end screw thread 6 directly is connected with drill bit, and upper wiper block 2, middle wiper block 3 and lower wiper block 4 are processed into one with drill collar body 5.
Each group wiper block with reference to 2, three groups of wiper blocks of accompanying drawing is comprised of two symmetrical righting unit 7, and the cornerite between the two righting unit is 24 °.
With reference to accompanying drawing 3, be drilled with the gear type wearable hard alloy cylinder of cylindrical hole 8 and insert Ф 12mm * 8mm on the righting unit 7.Righting unit upper/lower terminal and left and right bilateral are processed rational chamfering to guarantee downhole safety.Except gear type wearable hard alloy cylinder, this can be the integrated design by anti-oblique drill collar, is conducive to downhole safety.Other parameter of drill collar and requirement meet SY/T5144-2007 " drill collar " standard.
Claims (5)
- One kind can anti-oblique drill collar, comprise upper end screw thread (1), drill collar body (5), lower end screw thread (6), it is characterized in that: it is 120 °-180 ° wiper block that three groups of cornerites are arranged on the drill collar body (5); Three groups of wiper blocks circumferentially are 120 ° and stagger successively, and axially equidistantly uniform; Wiper block and drill collar body (5) are processed into one.
- 2. according to claim 1 can anti-oblique drill collar, it is characterized in that: the cornerite of described wiper block is 150 °.
- 3. according to claim 1 can anti-oblique drill collar, it is characterized in that: described wiper block is comprised of two symmetrical righting unit (7), righting unit (7) upper boring and insert wearable hard alloy cylinder.
- 4. according to claim 3 can anti-oblique drill collar, it is characterized in that: the cornerite between the two righting unit (7) of described wiper block is 24 °.
- According to claim 3 or 4 described can anti-oblique drill collar, it is characterized in that: the gear type wearable hard alloy cylinder of boring insert Ф 12mm * 8mm on the righting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110325065XA CN103061691A (en) | 2011-10-24 | 2011-10-24 | Anti-deviation drill collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110325065XA CN103061691A (en) | 2011-10-24 | 2011-10-24 | Anti-deviation drill collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103061691A true CN103061691A (en) | 2013-04-24 |
Family
ID=48104550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110325065XA Pending CN103061691A (en) | 2011-10-24 | 2011-10-24 | Anti-deviation drill collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103061691A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3268274A (en) * | 1964-05-25 | 1966-08-23 | Exxon Production Research Co | Spiral blade stabilizer |
| US4403668A (en) * | 1981-12-07 | 1983-09-13 | Ramsey Rickey H | Stabilizing drill collar |
| CN2769497Y (en) * | 2005-03-09 | 2006-04-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Offset stabilizing device |
| CN101761312A (en) * | 2008-12-01 | 2010-06-30 | 徐天元 | Drilling rod with ladder guide sleeve |
| US7845434B2 (en) * | 2005-03-16 | 2010-12-07 | Troy Lee Clayton | Technique for drilling straight bore holes in the earth |
| CN202300233U (en) * | 2011-10-24 | 2012-07-04 | 中国石油化工股份有限公司 | Anti-inclination drill collar |
-
2011
- 2011-10-24 CN CN201110325065XA patent/CN103061691A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3268274A (en) * | 1964-05-25 | 1966-08-23 | Exxon Production Research Co | Spiral blade stabilizer |
| US4403668A (en) * | 1981-12-07 | 1983-09-13 | Ramsey Rickey H | Stabilizing drill collar |
| CN2769497Y (en) * | 2005-03-09 | 2006-04-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Offset stabilizing device |
| US7845434B2 (en) * | 2005-03-16 | 2010-12-07 | Troy Lee Clayton | Technique for drilling straight bore holes in the earth |
| CN101761312A (en) * | 2008-12-01 | 2010-06-30 | 徐天元 | Drilling rod with ladder guide sleeve |
| CN202300233U (en) * | 2011-10-24 | 2012-07-04 | 中国石油化工股份有限公司 | Anti-inclination drill collar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103850711B (en) | Salt hole air reserved storeroom twin-well banking process | |
| CN203905815U (en) | Double-core reaming bit with multiple stages of reaming bodies | |
| CN202338240U (en) | Borehole cleaning tool | |
| CN103147734A (en) | Method for multi-section hydraulic fracture along coal layer of underground coal mine | |
| CN105201494A (en) | Method for performing ground stress test by using complete equipment | |
| CN204457433U (en) | Anti-inclination composite drilling tool | |
| CN103147788A (en) | Positive pressure and negative pressure combined gas drainage process by pressurizing coal body of thick coal seam | |
| CN204040909U (en) | Anti-oblique packed hole assembly is used in underground heat exploitation | |
| CN108331558B (en) | Horizontal well for gas layer and drilling and fracturing method of horizontal well | |
| CN206816642U (en) | A kind of construction bolting apparatus | |
| CN204299559U (en) | A kind of multi-lateral horizontal well system | |
| CN105298392A (en) | Quick broaching method and structure | |
| CN202300233U (en) | Anti-inclination drill collar | |
| CN102041965A (en) | Coal mine underground over-broken abnormal zone drilling method | |
| CN103061691A (en) | Anti-deviation drill collar | |
| CN207960501U (en) | Can fast drilling multistage drill bit | |
| CN103485719B (en) | A kind of gas water horizontal well drilling rig structure | |
| CN103867124B (en) | A kind of multi-lateral horizontal well system for coal bed gas being applicable to monoclinal structure | |
| CN203847138U (en) | Self-propelled hollow grouting anchor rod | |
| CN203856490U (en) | Self-driven hollow grouting anchor bolt | |
| CN203847013U (en) | Petroleum screw drilling tool | |
| CN203334956U (en) | Multi-branch horizontal well system suitable for coalbed methane of uniclinal structure | |
| CN202946014U (en) | Directional deflection bit | |
| CN207813517U (en) | Anti- mud drum reducing centralizer | |
| CN204827313U (en) | Tail pipe milling gets through and prevents inclined to one side grinder utensil with clutch formula |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130424 |