CN103993828B - Method of constructing gradually-increased type transition circular curve well track - Google Patents
Method of constructing gradually-increased type transition circular curve well track Download PDFInfo
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- CN103993828B CN103993828B CN201410094327.XA CN201410094327A CN103993828B CN 103993828 B CN103993828 B CN 103993828B CN 201410094327 A CN201410094327 A CN 201410094327A CN 103993828 B CN103993828 B CN 103993828B
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Abstract
The invention provides a method of constructing a gradually-increased type transition circular curve well track. The method includes the steps of designing the well drilling track, wherein the small angle increasing rate is adopted between a transition section from a straight well section to an angle increasing section and a transition section from the angle increasing section to a horizontal section, the angle is gradually increased, and transition is smooth; then constructing a transition arc from the straight well section to the angle increasing section with a device angle compensation method, and gradually increasing the well deviation at the 5-8 degree/100 m angle increasing rate through a 30 m-50 m combination drill to form a smooth circular curve to enable the angle increasing section to be transited to the horizontal section. The method is applied to the gradually-increased type well drilling track, well drilling friction and torque can be reduced to the maximum degree, the sliding capacity of the drill can be improved, drill blocking and breaking accidents can be reduced, and the service life of the drill can be prolonged.
Description
Technical field
The present invention relates to petroleum drilling engineering technical field, more particularly, to a kind of slow increasing formula excessive circular curve well rail
Mark construction method.
Background technology
The production of oil gas, for example oily gentle, have been carried out many years.For producing these oil gas, in oil field, flatly or many
Mouth well is generally drilled to underground position, and it is commonly referred to as subterranean strata or underground basin.Produce the side of oil gas from underground position
Method generally includes each development phase from Scheme Choice stage to production phase.One of development phase includes drillng operation, its
Form underground position to the fluid path of earth's surface.Drillng operation may include using different equipment, for example Hydraulic Power System, drill bit,
Motor etc., it is used for being drilled into target depth.
At present, conventional horizontal well mostly presses " straight-increasing-horizontal segment " three sections of section constructions processed, in straight well section and increasing hole angle section,
There is obvious flex point, rate of over-all angle change is larger, and well track is unsmooth, and drag and torque is larger between increasing hole angle section and horizontal segment,
Enter difficulty under sleeve pipe and completion tool, drill string is susceptible to Helical Buckling, lead to bit freezing drillling tool twisting off accident to occur, make casing deformation
Or damage.
Content of the invention
The technical problem to be solved is just to above-mentioned technical deficiency, provides one kind to be applied to slow increasing formula
Wellbore trace, can reduce drilling well frictional resistance and moment of torsion to greatest extent, increase the slip ability of drilling tool, can reduce the bit freezing breaking of rod again
Tool accident occurs, and improves the slow increasing formula excessive circular curve well track construction method of the service life of drilling tool.
The technical solution adopted for the present invention to solve the technical problems is:
Slow increasing formula excessive circular curve well track construction method, includes following process:
Carry out the design of wellbore trace first, in " straight well section to increasing hole angle section, increasing hole angle section are to horizontal segment " this two transitions
Between, using less rate of increase of angle, slow increasing hole angle is gently excessive, and the hole deviation before changeover portion and orientation are continuously adjusted
To in designed path, define the oblique of " vertical curve and circular arc line smooth tangent " and " circular arc line is tangent with horizontal line "
Face circular curve well track.
For first vertical curve and circular arc line smooth tangent in excessive circular line, from straight well section excessively to increasing hole angle section,
Strictly control tool face angle, adopt " tool face angle penalty method ", 90-110m before initial orientation, to make less than design (less)
Slope orientation construction, takes slip directional drilling 5-10m, rotates composite drill 10-20m, slowly cumulative mode, to reduce hole deviation side
Position rate of change, makes transition well track smooth.After hole deviation reaches 15～20 °, then return to original design build angle rate construction.
For the Article 2 circular arc line and horizontal line excessive circular line in tangent, from increasing hole angle section excessively to horizontal segment, due to
Hole angle now is general to take the composite drill of 30～50m all at 70～75 ° about, is delayed with 5-8 °/100m rate of increase of angle and increases hole deviation
Form a smooth arc curved transition to horizontal segment.
In such scheme, described tool face angle increases orientation in i quadrant increasing hole angle, increases orientation in quadrant drop angle, as
Limit drop angle subtracts orientation, subtracts orientation in iv quadrant increasing hole angle, with the change of tool face angle, reaches increasing hole angle, drop angle, increasing hole angle variable-azimuth, fall
The tiltedly purpose of variable-azimuth.Deflecting in three-dimensional horizontal well, from straight well section excessively to increasing hole angle section, when Borehole Azimuth off-design,
Increasing hole angle is carried out with turning round orientation simultaneously, and because hole angle and azimuth are all being continually changing at any time, the tool face angle being previously set also exists
It is continually changing.
The construction method of above 2 transition curves, can make transition well track smooth, reduce drag and torque, reduce
Side force, improves the handling capacity of tubing string and survey tool, avoids to greatest extent and be susceptible to Helical Buckling at 2 flex points
Lead to drillling tool twisting off and tubing string to damage, enter to create favorable conditions under the safety being later stage completion tubular column.
The main beneficial effect of the present invention is:
The inventive method can reduce drilling well frictional resistance and moment of torsion to greatest extent, increase the slip ability of drilling tool, can subtract again
Few bit freezing drillling tool twisting off accident occurs, and improves the service life of drilling tool.
Brief description
Fig. 1 is embodiment of the present invention wellbore trace profile；
In figure: 1 straight well section, 2 increasing hole angle sections, 3 horizontal segments, 4 first excessive circular lines, 5 second excessive circular lines.
Specific embodiment
With reference to specific embodiment, the embodiment of the present invention is further described:
Slow increasing formula excessive circular curve well track construction method, includes following process:
Carry out the design of wellbore trace first, as shown in Figure 1 " straight well section 1 arrives increasing hole angle section 2, increasing hole angle section 2 arrives horizontal segment 3 "
Between this two transitions, using less rate of increase of angle, slow increasing hole angle is gently excessive, and the hole deviation before changeover portion and orientation are connected
Continue and be constantly adjusted in designed path, define one " vertical curve and circular arc line smooth tangent " and " circular arc line and a water
Horizontal line is tangent " the circular arc with inclined plane well track.
For vertical curve and circular arc line smooth tangent in the first excessive circular line 4, from straight well section excessively to increasing hole angle section, sternly
Lattice control tool face angle, according to the tool face angle w of any point on the inclined-plane circular arc that professor Han Zhiyong derivesiComputing formula:
Increase orientation in formula and take " " number, subtract orientation and take " ten " number.
Can be seen that from formula, the tool face angle of inclined-plane circular arc is as hole angle and azimuthal change and changes, and wants
Holding meanss angle constant it is necessary at any time adjust tool-face, adopt " tool face angle penalty method ", 100m before initial orientation, to be less than
Design (less) build angle rate orientation construction, takes slip directional drilling 10m, rotates composite drill 20m, slowly cumulative mode, with
Reduce direction of deflection rate of change, so that transition well track is smoothed.After hole deviation reaches 20 °, then return to original design deflecting
Rate is constructed.
For circular arc line and horizontal line the second excessive circular line 5 in tangent, from increasing hole angle section excessively to horizontal segment, due to this
When hole angle general take the composite drill of 40m all at 70～75 ° about, delayed with 8 °/100m rate of increase of angle and increase hole deviation and form one
Smooth arc curved transition is to horizontal segment.
In the present embodiment, described tool face angle i quadrant increasing hole angle increase orientation, quadrant drop angle increase orientation, as
Limit drop angle subtracts orientation, subtracts orientation in iv quadrant increasing hole angle, with the change of tool face angle, reaches increasing hole angle, drop angle, increasing hole angle variable-azimuth, fall
The tiltedly purpose of variable-azimuth.Deflecting in three-dimensional horizontal well, from straight well section excessively to increasing hole angle section, when Borehole Azimuth off-design,
Increasing hole angle is carried out with turning round orientation simultaneously, and because hole angle and azimuth are all being continually changing at any time, the tool face angle being previously set also exists
It is continually changing.
The construction method of above 2 transition curves, can make transition well track smooth, reduce drag and torque, reduce
Side force, improves the handling capacity of tubing string and survey tool, avoids to greatest extent and be susceptible to Helical Buckling at 2 flex points
Lead to drillling tool twisting off and tubing string to damage, enter to create favorable conditions under the safety being later stage completion tubular column.
Protection scope of the present invention is not limited to the above embodiments it is clear that those skilled in the art can be to this
Bright carry out various change and deformation without deviating from scope and spirit of the present invention.If these are changed and deformation belongs to present invention power
In the range of profit requirement and its equivalent technologies, then the intent of the present invention also comprises these changes and deforms.
Claims (2)
1. delay increasing formula transition arc curve well track construction method, include following process:
Carry out the design of wellbore trace first, between straight well section to increasing hole angle section, this two changeover portions of increasing hole angle section to horizontal segment, adopt
Use less rate of increase of angle, slow increasing hole angle gentle transition, the hole deviation before changeover portion and orientation are continuously adjusted to design
In track, form vertical curve and circular arc line smooths tangent, and the circular arc with inclined plane that a circular arc line is tangent with horizontal line
Well track；
For first vertical curve and circular arc line smooth tangent in transition circle camber line, be transitioned into increasing hole angle section from straight well section, strictly
Control tool face angle, using tool face angle penalty method, 90-110m before initial orientation, less than design build angle rate orientation construction, to adopt
Take slip directional drilling 5-10m, rotate composite drill 10-20m, slowly cumulative mode, to reduce direction of deflection rate of change, make transition
Section well track smooths, and after hole deviation reaches 15～20 °, then returns to original design build angle rate construction；
For the Article 2 circular arc line and horizontal line transition circle camber line in tangent, it is transitioned into horizontal segment from increasing hole angle section, take 30～
The composite drill of 50m, delays increasing hole deviation one smooth arc of formation with 5-8 °/100m rate of increase of angle and curves into horizontal segment.
2. as claimed in claim 1 delay increasing formula transition arc curve well track construction method it is characterised in that: described dress
Angle setting increases orientation in i quadrant increasing hole angle, increases orientation in quadrant drop angle, subtracts orientation in quadrant drop angle, in the iv quadrant increasing hole angle side of subtracting
Position.
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| CN103993828B true CN103993828B (en) | 2017-01-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747165B (en) * | 2015-01-27 | 2017-06-13 | 中国石油天然气股份有限公司 | Three-dimensional horizontal well body profile design method |
| CN107882505B (en) * | 2016-09-28 | 2019-08-20 | 中国石油化工股份有限公司 | Track control method based on steering drilling tool working characteristics |
| CN109138985B (en) * | 2017-06-26 | 2021-11-02 | 中国石油天然气股份有限公司 | Method and device for determining full-angle change rate of pipeline directional drilling crossing track |
| CN107762411B (en) * | 2017-12-05 | 2019-03-01 | 重庆科技学院 | Continuous pipe well drilling rail method for correcting error |
| CN112100796B (en) * | 2019-06-18 | 2024-05-28 | 中国石油天然气集团有限公司 | Drilling track determination method and device for preventing casing in shale gas well from being damaged |
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| CN101832105A (en) * | 2010-04-28 | 2010-09-15 | 李孝勇 | Method for well drilling and cementing of radial horizontal well with ultra-short radius and equipment thereof |
| RU2421586C1 (en) * | 2009-12-14 | 2011-06-20 | Общество с ограниченной ответственностью "УПРАВЛЯЮЩАЯ КОМПАНИЯ "Татбурнефть" ООО "УК "Татбурнефть" | Procedure for construction of horizontal well in devonian strata |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2270907C1 (en) * | 2004-07-26 | 2006-02-27 | ОАО НПО "Буровая техника" | Method for directed well drilling along smooth path |
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|---|---|---|---|---|
| RU2421586C1 (en) * | 2009-12-14 | 2011-06-20 | Общество с ограниченной ответственностью "УПРАВЛЯЮЩАЯ КОМПАНИЯ "Татбурнефть" ООО "УК "Татбурнефть" | Procedure for construction of horizontal well in devonian strata |
| CN101832105A (en) * | 2010-04-28 | 2010-09-15 | 李孝勇 | Method for well drilling and cementing of radial horizontal well with ultra-short radius and equipment thereof |
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| 三维Z形斜面圆弧井眼轨迹控制技术;王伟;《石油钻采工艺》;20070815;第29卷(第4期);第10-12页 * |
| 开口等边三角形内切圆弧水平井的轨迹控制;谢学明等;《江汉石油科技》;20101225;第20卷(第4期);第36-39页 * |
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Effective date of registration: 20200710 Address after: 100027 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: SINOPEC Group Co-patentee after: SINOPEC JIANGHAN OILFIELD SERVICE Corp. Address before: 433121 No. 57 Xianfeng Road, Guanghua office, Qianjiang, Hubei 1 Patentee before: NO.1 DRILLING WELL COMPANY OF SINOPEC JIANGHAN PETROLEUM ENGINEERING Co.,Ltd. |
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