CN203626609U - Screw drill combination for slant well section - Google Patents
Screw drill combination for slant well section Download PDFInfo
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- CN203626609U CN203626609U CN201320571842.3U CN201320571842U CN203626609U CN 203626609 U CN203626609 U CN 203626609U CN 201320571842 U CN201320571842 U CN 201320571842U CN 203626609 U CN203626609 U CN 203626609U
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Abstract
The utility model relates to a screw drill combination for a slant well section. The screw drill combination comprises a drill bit, a screw drill, a back pressure valve, a wireless while-drilling directional sub, a non-magnetic drill collar, a cross-over sub, forty-five heavy weight drill pipes and a drill pipe. A pin of the drill bit is connected with a lower box of the screw drill, an upper box of the screw drill is connected with a lower pin of the back pressure valve, an upper box of the back pressing valve is connected with a lower pin of the wireless while-drilling directional sub, the upper box of the wireless while-drilling directional sub is connected with the lower pin of the non-magnetic drill collar, the upper box of the non-magnetic drill collar is connected with the lower pin of the cross-over sub, the upper box of the cross-over sub is connected with the lower pins of the heavy weight drill pipes, the forty-five heavy weight drill pipes are connected sequentially from bottom to top, and upper boxes of the heavy weight drill pipes are connected with the drill pipe. The screw drill is improved in order to achieve the objective of one-step drilling to form a 'total slant-well-section inverted flexible drill', in other words, a common drill collar is omitted for little-well slant directional section drilling, kickoff point starts according to the concept of completing the slant well section by one-step drilling, and the inverted drill combination is used.
Description
Technical field
The utility model relates to a kind of lower curved section helicoid hydraulic motor combination.
Background technology
Lower curved section is the key link of horizontal well, the casing program that Su Lige block gas water horizontal well adopts is at present designed to directly-increases-steady-increasing-Ping, before target, apart from designing general control at 350-500 meters, before target, the size of distance is determining the length of lower curved section and the curvature of lower curved section.Natural gas horizontal well lower curved section adopts " rock bit+1.25o screw rod " combination, and compound rate of increase of angle reaches 2.1-3.3o/30 rice, slip rate of increase of angle 7.5-9 o/30 rice.But rock bit is restricted service time, easily cause lost cone risk.Improve by the personalization of PDC drill bit afterwards, use 1.25 degree screw rods to coordinate PDC drill bit slip boring means face stable in high angle hole section, slip drilling efficiency is high, but very low 0-10 ° of hole deviation scope directive efficiency, therefore basically form the lower curved section Construction Mode of " gear wheel orientation, PDC drill bit increasing hole angle ".
Utility model content
The technical problems to be solved in the utility model is to provide a kind of lower curved section helicoid hydraulic motor combination, to overcome the defect existing in prior art.
The technical solution of the utility model is: a kind of lower curved section helicoid hydraulic motor combination, is characterized in that:
Comprise drill bit, helicoid hydraulic motor, back pressure valve, wireless drilling orientation joint, non magnetic drill collar, crossover sub, heavy weight drill pipe and drilling rod; Wherein, drill bit pin thread is connected with helicoid hydraulic motor bottom box, helicoid hydraulic motor top box is connected with back pressure valve bottom pin thread, back pressure valve top box is connected with wireless drilling orientation joint bottom pin thread, wireless drilling orientation joint top box is connected with non magnetic drill collar bottom pin thread, non magnetic drill collar top box is connected with crossover sub bottom pin thread, crossover sub top box is connected with heavy weight drill pipe bottom pin thread, 45 heavy weight drill pipes are connected from bottom to top successively, and heavy weight drill pipe top box is connected with drilling rod.
Described outside diameter is 215.9mm, and pin thread button-type is 431;
Described helicoid hydraulic motor external diameter is 172mm, and bottom box button-type is 430; Top box button-type is 460;
Described back pressure valve bottom pin thread button-type is 461, and top box button-type is 460;
Described wireless drilling orientation joint bottom pin thread button-type is 461, and top box button-type is 460;
Described non magnetic drill collar external diameter is 165mm, and bottom pin thread button-type is 461, and top box button-type is 460;
Described crossover sub bottom pin thread button-type is 461, and top box button-type is 410;
Described heavy weight drill pipe external diameter is 127mm, and bottom pin thread button-type is 411, and top box button-type is 410.
Described drilling rod external diameter is 127mm, and bottom pin thread button-type is 411, and top box button-type is 410.
The angle of the curved housing of described helicoid hydraulic motor is 1.5o.
Described drill bit is polycrystalline diamond compact bit.
Technique effect of the present utility model is:
By preferred screw rod model, improve guiding PDC drill bit personalized designs, in order to make the cutting teeth of same area there is identical wear extent, extend as much as possible the cutting teeth life-span, adopt and waited cutting layout design, adopt more shallow inner cone and shorter outer cone cross-section structure, the tool-face stability and the application life that strengthen drill bit simultaneously.Raising carcass material comprehensive physical performance, the common drill bit of its wing aspect ratio increases approximately 50%, and the stability of drill bit is strengthened greatly; Long gauge design prevents that in horizontal well drill bit from circling round effectively, makes drill bit work more steadily and on stabilizing tool face have unique advantage.Dark chip removal runner design, can more effectively make drilling cuttings leave in time shaft bottom, avoid repetition fragmentation, prevent bit balling, make cross flow layer in shaft bottom can cover whole drill bit in conjunction with the central nozzle at high dip angle, be conducive to the cooling of drill bit cleaning and cutting teeth, effectively improve the compound rate of increase of angle of lower curved section PDC drill bit, improve hole trajectory control ability, effectively improve lower curved section efficiency of construction.Adopt 1 non magnetic drill collar, 45 Ф 127mm heavy weight drill pipes, reduce drilling tool structure rigidity.The optimization of the drilling tool of lower curved section is mainly to improve for realizing the target of boring for a time, form " full lower curved section upside-down mounting flexible drill string ", be The Small Well tiltedly directed section creep into and removed common drill collar, kickoff point (KOP) just starts the thinking of having bored lower curved section according to a time, use inverted drill string combines.
Accompanying drawing explanation
Fig. 1 is drill bit schematic diagram;
Fig. 2 is helicoid hydraulic motor schematic diagram;
Fig. 3 is back pressure valve schematic diagram;
Fig. 4 is wireless drilling orientation joint schematic diagram;
Fig. 5 is non magnetic drill collar schematic diagram;
Fig. 6 is crossover sub schematic diagram;
Fig. 7 is heavy weight drill pipe schematic diagram;
Fig. 8 is drilling rod schematic diagram;
Fig. 9 is the schematic diagram of lower curved section helicoid hydraulic motor composite entity structure.
The specific embodiment
The utility model relates to drilling technology field in oil, natural gas exploration and development process, use " PDC+ screw rod " to combine compound rate of increase of angle for Su Lige block natural gas horizontal well lower curved section lower, optimize screw rod model, effectively improve the compound rate of increase of angle of lower curved section.
Referring to Fig. 1 to Fig. 9, the concrete structure of a kind of lower curved section helicoid hydraulic motor combination that the utility model relates to is:
Comprise drill bit, helicoid hydraulic motor, back pressure valve, wireless drilling orientation joint, non magnetic drill collar, crossover sub, heavy weight drill pipe and drilling rod; Wherein,
Drill bit pin thread is connected with helicoid hydraulic motor bottom box, helicoid hydraulic motor top box is connected with back pressure valve bottom pin thread, back pressure valve top box is connected with wireless drilling orientation joint bottom pin thread, wireless drilling orientation joint top box is connected with non magnetic drill collar bottom pin thread, non magnetic drill collar top box is connected with crossover sub bottom pin thread, crossover sub top box is connected with heavy weight drill pipe bottom pin thread, 45 heavy weight drill pipes are connected from bottom to top successively, (identical drilling rod is connected with drilling rod heavy weight drill pipe top box from bottom to top successively with drilling rod connection, mainly determine according to lower curved section length).
Outside diameter described in the utility model is 215.9mm, and pin thread button-type is 431;
Described helicoid hydraulic motor external diameter is 172mm, and bottom box button-type is 430; Top box button-type is 460;
Described back pressure valve bottom pin thread button-type is 461, and top box button-type is 460;
Described wireless drilling orientation joint bottom pin thread button-type is 461, and top box button-type is 460;
Described non magnetic drill collar external diameter is 165mm, and bottom pin thread button-type is 461, and top box button-type is 460;
Described crossover sub bottom pin thread button-type is 461, and top box button-type is 410;
Described heavy weight drill pipe external diameter is 127mm, and bottom pin thread button-type is 411, and top box button-type is 410.
Described drilling rod external diameter is 127mm, and bottom pin thread button-type is 411, and top box button-type is 410.
The angle of the curved housing of the helicoid hydraulic motor in the utility model, selecting camber is 1.5o.
Drill bit in the utility model is polycrystalline diamond compact PDC drill bit.
Lower curved section adopts " PDC drill bit+1.5o screw rod " orientation, very fast when this cover drilling tool composite drill, compound rate of increase of angle reaches 1.2-2o/30 rice, slip rate of increase of angle reaches 5.4-6.6o/30 rice, stop the risk of lost cone, improve the efficiency of construction of lower curved section, met Su Lige block horizontal well lower curved section construction requirement.Along with continually developing of horizontal well, this block geologic structure has had certain understanding, by three sections of sections processed of be optimized for directly-micro-increasing-increasing of casing program, increases compound drilling well section, has reduced the ratio of sliding and creeping into, thereby improves the rate of penetration of lower curved section.The shortest construction period 3.29 days at present, long period 18.92 days, speed-raising space is very big.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (4)
1. a lower curved section helicoid hydraulic motor combination, is characterized in that: comprise drill bit, helicoid hydraulic motor, back pressure valve, wireless drilling orientation joint, non magnetic drill collar, crossover sub, heavy weight drill pipe and drilling rod; Wherein, drill bit pin thread is connected with helicoid hydraulic motor bottom box, helicoid hydraulic motor top box is connected with back pressure valve bottom pin thread, back pressure valve top box is connected with wireless drilling orientation joint bottom pin thread, wireless drilling orientation joint top box is connected with non magnetic drill collar bottom pin thread, non magnetic drill collar top box is connected with crossover sub bottom pin thread, crossover sub top box is connected with heavy weight drill pipe bottom pin thread, 45 heavy weight drill pipes are connected from bottom to top successively, and heavy weight drill pipe top box is connected with drilling rod.
2. lower curved section helicoid hydraulic motor combination according to claim 1, is characterized in that:
Described outside diameter is 215.9mm, and pin thread button-type is 431;
Described helicoid hydraulic motor external diameter is 172mm, and bottom box button-type is 430; Top box button-type is 460;
Described back pressure valve bottom pin thread button-type is 461, and top box button-type is 460;
Described wireless drilling orientation joint bottom pin thread button-type is 461, and top box button-type is 460;
Described non magnetic drill collar external diameter is 165mm, and bottom pin thread button-type is 461, and top box button-type is 460;
Described crossover sub bottom pin thread button-type is 461, and top box button-type is 410;
Described heavy weight drill pipe external diameter is 127mm, and bottom pin thread button-type is 411, and top box button-type is 410;
Described drilling rod external diameter is 127mm, and bottom pin thread button-type is 411, and top box button-type is 410.
3. lower curved section helicoid hydraulic motor combination according to claim 1, is characterized in that: the angle of the curved housing of described helicoid hydraulic motor is 1.5o.
4. lower curved section helicoid hydraulic motor combination according to claim 1, is characterized in that: described drill bit is polycrystalline diamond compact bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571842.3U CN203626609U (en) | 2013-09-16 | 2013-09-16 | Screw drill combination for slant well section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571842.3U CN203626609U (en) | 2013-09-16 | 2013-09-16 | Screw drill combination for slant well section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203626609U true CN203626609U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320571842.3U Expired - Fee Related CN203626609U (en) | 2013-09-16 | 2013-09-16 | Screw drill combination for slant well section |
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| Country | Link |
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| CN (1) | CN203626609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395975A (en) * | 2020-04-16 | 2020-07-10 | 中国石油天然气集团有限公司 | Two-opening one-trip drilling tool combination suitable for construction of oil well horizontal well and construction method thereof |
-
2013
- 2013-09-16 CN CN201320571842.3U patent/CN203626609U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395975A (en) * | 2020-04-16 | 2020-07-10 | 中国石油天然气集团有限公司 | Two-opening one-trip drilling tool combination suitable for construction of oil well horizontal well and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20210916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |