CN102242603A - Bottom drilling tool combination with double stabilizers resisting deviation by using prebuckling dynamics - Google Patents
Bottom drilling tool combination with double stabilizers resisting deviation by using prebuckling dynamics Download PDFInfo
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- CN102242603A CN102242603A CN201110199932XA CN201110199932A CN102242603A CN 102242603 A CN102242603 A CN 102242603A CN 201110199932X A CN201110199932X A CN 201110199932XA CN 201110199932 A CN201110199932 A CN 201110199932A CN 102242603 A CN102242603 A CN 102242603A
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Abstract
The invention relates to a bottom drilling tool combination with double stabilizers resisting deviation by using prebuckling dynamics. The combination comprises a drill bit, near-bit stabilizers, a prebuckling short joint, a short drill collar, upper stabilizers and a drill collar, wherein the drill bit is connected with one near-bit stabilizer; the near-bit stabilizers are connected with the prebuckling short joint; the prebuckling short joint is connected with the short drill collar; the short drill collar is connected with one upper stabilizer; the upper stabilizers are connected with the drill stem at the upper part through the drill collar; and an inclined-resistant force is supplied by utilizing the dynamic characteristics of the bottom drilling tool combination, thereby realizing the purpose of resisting deviation. The bottom drilling tool combination provided by the invention has the maximum advantages that the deviation resisting operation can be carried out by utilizing the dynamic characteristics of the bottom drilling tool combination with a prebuckling structure. The drilling tool combination provided by the invention is suitable for mud well drilling and gas well drilling and has the advantages of low cost and good safety.
Description
Technical field
The present invention relates to the field drilling technical field, provide a kind of section of peupendicular hole cheaply deviation prevention and fast drilling assembly, particularly a kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA).
Background technology
The deviation control with drilling straight well of straight hole is a very important difficult problem of puzzlement drilling well circle always.In very long drilling practice process, the drilling technology personnel are exploring a kind of effective deviation control with drilling straight well technology always.These deviation control with drilling straight well technology comprise: pendulum assembly deviation control with drilling straight well technology, meet the eye on every side beat straight technology, lay particular stress on the anti-oblique technology of twin-feed spiral stabilizer, eccentric anti-oblique technology, the anti-oblique technology of big the pressure of the drill.More than these deviation prevention and fast technology, say in a sense all to belong to passive deviation control with drilling straight well technology category.Since the nineties, the deviation control with drilling straight well technology has had new progress again, novel initiative deviation control with drilling straight well technology such as VDS, SDD, VertiTrak, PowerV, Smart Drilling have appearred, China also in the oil field, Tarim Basin high in front of the mountains steep structure, China Petrochemical Industry's formation of marine facies in southern China stratum successful Application VertiTrak, PowerV, Smart Drilling system, and obtained good effect.But, just become the major obstacle that these technology are generally applied at home because the cost of these technology is higher.In the straight well deviation control with drilling straight well drilling process of some high steep structures, the still pendulum of present more use is beaten straight technology.Because the shortcoming of pendulum method is to be difficult to discharge the pressure of the drill, thereby makes bit speed to be improved, and makes drilling benefit be subjected to serious restriction.For this reason, anti-oblique, the eccentric deviation control with drilling straight well technology of big the pressure of the drill etc. is arisen at the historic moment.Although the thinking of development of these methods (should belong to kinetics deviation control with drilling straight well technology category) is very correct, because the research of theoretical side and the defective of calculating aspect, make and do not obtain good effect in the application at the scene of these technology.We can say that the anti-oblique problem of straight well remains a difficult problem that needs to be resolved hurrily cheaply.
Summary of the invention
At defective of the prior art, the purpose of this invention is to provide a kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA), and utilize the dynamics of this specific Bottom Hole Assembly (BHA), on drill bit, form bigger anti-oblique force, and adopt and can reach pendulum assembly and can control hole deviation and do not increase used maximum the pressure of the drill (being called for short pendulum limit the pressure of the drill) the pressure of the drill 150% or more, realize the anti-oblique fast purpose of beating again.It has crucial meaning to control hole deviation, raising rate of penetration, reduction operating cost.
In order to achieve the above object, the present invention adopts following technical proposals:
A kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA), its by drill bit, near-bit stabilizer, prebuckling pipe nipple, stub boring quickly, go up stabilizer and drill collar is formed, described drill bit connects a described near-bit stabilizer, described near-bit stabilizer connects a prebuckling pipe nipple, described prebuckling pipe nipple connects a described stub boring quickly, described stub boring quickly connects a described stabilizer of going up, and the described stabilizer of going up connects upper drilling string by described drill collar; Utilize the dynamics of Bottom Hole Assembly (BHA) to come to provide anti-oblique force, realize the deviation prevention and fast purpose to drill bit.
There is bending at above-mentioned prebuckling pipe nipple middle part, and the bent angle at its curved some place is 0.1 ° ~ 1.5 °, and described prebuckling pipe nipple is whole processing.
Above-mentioned near-bit stabilizer and last stabilizer have 3 ~ 5 spiral righting strips.
The external diameter of above-mentioned near-bit stabilizer is less than the described stabilizer of going up; Described near-bit stabilizer external diameter is less than borehole diameter 6 ~ 18mm, and the described external diameter of stabilizer of going up is less than hole diameter 1 ~ 6mm.
Above-mentioned stub boring quickly must mate with bit diameter with the external diameter of drill collar, satisfies requirement of engineering.
The mid point of above-mentioned near-bit stabilizer to the distance of the bottom of described drill bit is 0.5 ~ 1.1m; Distance between described near-bit stabilizer and the described last stabilizer is between 6 ~ 16m, and hole diameter is big more, and the distance between two stabilizers is got big value.
In order to guarantee to have higher rate of penetration, should adopt suitable the pressure of the drill.The General Definition pendulum assembly can be controlled hole deviation, and not increase used maximum the pressure of the drill be pendulum limit the pressure of the drill, and then the pressure of the drill of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA) can reach more than 150% of pendulum limit the pressure of the drill.
Above-mentioned drill bit is various rock bit or the PDC drill bits that satisfy requirement of engineering.
The present invention has following outstanding advantage compared with prior art:
The invention provides a kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA), its great advantage is to utilize the dynamics of the Bottom Hole Assembly (BHA) of band prebuckling structure to carry out the deviation prevention and fast operation, this drilling assembly is fit to mud drilling and gas drilling, and cost is low, safety is good.
Description of drawings
Fig. 1 is a prebending kinetics deviation control and fast bistable device drilling assembly structural representation.
Fig. 2 is used prebuckling pipe nipple schematic diagram.
Fig. 3 is a stabilizer profile schematic diagram.
Fig. 4 is the anti-oblique force of drill bit that prebending kinetics deviation control and fast bistable device drilling assembly may provide.
The specific embodiment
Below in conjunction with the drawings and specific embodiments embodiments of the invention are described in further detail.
As shown in Figure 1, a kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA), its by drill bit 1, near-bit stabilizer 2, prebuckling pipe nipple 3, stub boring quickly 4, go up stabilizer 5 and drill collar 6 is formed, described drill bit 1 connects a described near-bit stabilizer 2, described near-bit stabilizer 2 connects a prebuckling pipe nipple 3, described prebuckling pipe nipple 3 connects a described stub boring quickly 4, described stabilizer 5 of going up of described stub boring 4 connections quickly, the described stabilizer 5 of going up connects upper drilling string by described drill collar 6; Utilize the dynamics of Bottom Hole Assembly (BHA) to come to provide anti-oblique force, realize the deviation prevention and fast purpose to drill bit.
As shown in Figure 2, there is bending at described prebuckling pipe nipple 3 middle parts, and the bent angle at its curved point 7 places is 0.1 ° ~ 1.5 °, and described prebuckling pipe nipple 3 is whole processing.
As shown in Figure 3, described near-bit stabilizer 2 and last stabilizer 5 have 3 ~ 5 spiral righting strips.
The external diameter of described near-bit stabilizer 2 is less than the described stabilizer 5 of going up; Described near-bit stabilizer 2 external diameters are less than borehole diameter 6 ~ 18mm, and the described external diameter of stabilizer 5 of going up is less than hole diameter 1 ~ 6mm.
Described stub boring quickly 4 and the external diameter of drill collar 6 must mate with bit diameter, satisfy requirement of engineering.
The mid point of described near-bit stabilizer 2 to the distance of the bottom of described drill bit 1 is 0.5 ~ 1.1m; Distance between described near-bit stabilizer 2 and the described last stabilizer 5 is between 6 ~ 16m, and hole diameter is big more, and the distance between two stabilizers is got big value.
The used the pressure of the drill of this drilling assembly can reach pendulum assembly and can control hole deviation and do not increase more than 150% of used maximum the pressure of the drill.
Described drill bit 1 is various rock bit or the PDC drill bits that satisfy requirement of engineering.
Embodiment one: the used prebending kinetics deviation control and fast bistable of 215.9mm well device drilling assembly
215.9mm drill bit+208mm spiral stabilizer+prebuckling pipe nipple (1.0 °)+￠ 165mm stub boring quickly+215mm spiral stabilizer+￠ 165mm drill collar * 54m.
Its ad hoc structure parameter following (concrete symbol is referring to Fig. 1):
Wherein,
Be the mid point of near-bit stabilizer 2 distance to the bottom of described drill bit 1;
Arrive the distance of described near-bit stabilizer 2 mid points for the curved point 7 of prebuckling pipe nipple 3;
Be two distances between the stabilizer;
Be drill bit 1 external diameter;
External diameter for near-bit stabilizer 2;
External diameter for last stabilizer 5;
Be body external diameter between near-bit stabilizer 2 and the drill bit 1;
External diameter for prebuckling pipe nipple 3;
Be stub boring 4 external diameter quickly;
External diameter for drill collar 6;
Internal diameter for drilling assembly;
Bent angle for prebuckling pipe nipple 3.
Corresponding prevents oblique force result of calculation as shown in Figure 4 relatively, and its value is-11.09kN.
As a comparison, the tiltedly anti-or drop angle Bottom Hole Assembly (BHA) of present more employing is a pendulum assembly:
215.9mm drill bit+￠ 165mm drill collar * 18m+212mm spiral stabilizer+￠ 165mm drill collar * 9m+212mm spiral stabilizer+￠ 165mm drill collar * 54m.The maximum characteristics of this combination must adopt little the pressure of the drill to hang up and beat when height is constructed suddenly exactly, though can prevent that tiltedly rate of penetration is very low.For example utilize this drilling assembly Shengli Oil Field forever 552 wells, 2024～2852.23m well section use, maximum the pressure of the drill 40kN, maximum hole deviation reaches 10 °, rate of penetration is less than 2 meters/hour.And prebending kinetics deviation control and fast bistable device drilling assembly offset well forever the identical well section of 559 wells use, maximum the pressure of the drill can reach 60kN, only 3.62 ° of maximum hole deviations, rate of penetration reaches 9.52 meters/hour.
Embodiment two: the used prebending kinetics deviation control and fast bistable of 311.2mm well device drilling assembly
311.2mm drill bit+301mm spiral stabilizer+prebuckling pipe nipple (0.7 °)+￠ 203mm stub boring quickly+311mm spiral stabilizer+￠ 203mm drill collar * 54m.
Its ad hoc structure parameter following (concrete symbol is referring to Fig. 1):
＝0.9m；
＝1.1m,
=12m，
=311.2mm,
=301mm,
=311mm，?
=203mm，
=203mm
=203mm,
?=71.4?mm，
=0.7°。
Claims (5)
1. prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA), it is characterized in that, it is by drill bit (1), near-bit stabilizer (2), prebuckling pipe nipple (3), stub boring is (4) quickly, last stabilizer (5) and drill collar (6) are formed, described drill bit (1) connects a described near-bit stabilizer (2), described near-bit stabilizer (2) connects a prebuckling pipe nipple (3), described prebuckling pipe nipple (3) connects a described stub boring quickly (4), described stub boring quickly (4) connects a described stabilizer (5) of going up, and the described stabilizer (5) of going up connects upper drilling string by described drill collar (6);
There is bending at described prebuckling pipe nipple (3) middle part, and the bent angle that its curved point (7) is located is 0.5 ° ~ 1.5 °, and described prebuckling pipe nipple (3) is whole processing;
Described near-bit stabilizer (2) and last stabilizer (5) have 3 ~ 5 spiral righting strips;
The external diameter of described near-bit stabilizer (2) is less than the described stabilizer (5) of going up; Described near-bit stabilizer (2) external diameter is less than borehole diameter 6 ~ 18mm, and the described external diameter of stabilizer (5) of going up is less than hole diameter 1 ~ 6mm;
The mid point of described near-bit stabilizer (2) to the distance of the bottom of described drill bit (1) is 0.5 ~ 1.1m; Distance between described near-bit stabilizer (2) and the described last stabilizer (5) is between 6 ~ 16m, and hole diameter is big more, and the distance between two stabilizers is got big value; Utilize the dynamics of Bottom Hole Assembly (BHA) to come to provide anti-oblique force, realize the deviation prevention and fast purpose to drill bit.
2. a kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA) according to claim 1 is characterized in that, the described stub boring quickly external diameter of (4) and drill collar (6) must mate with bit diameter, satisfies requirement of engineering.
3. a kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA) according to claim 1 is characterized in that, the used the pressure of the drill of this drilling assembly can reach pendulum assembly and can control hole deviation and do not increase more than 150% of used maximum the pressure of the drill.
4. a kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA) according to claim 1 is characterized in that described drill bit (1) is various rock bit or the PDC drill bits that satisfy requirement of engineering.
5. a kind of prebending kinetics deviation control and fast bistable device Bottom Hole Assembly (BHA) according to claim 1 is characterized in that, this drilling assembly is fit to mud drilling and gas drilling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110199932XA CN102242603A (en) | 2011-07-18 | 2011-07-18 | Bottom drilling tool combination with double stabilizers resisting deviation by using prebuckling dynamics |
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| CN201110199932XA CN102242603A (en) | 2011-07-18 | 2011-07-18 | Bottom drilling tool combination with double stabilizers resisting deviation by using prebuckling dynamics |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828691A (en) * | 2012-08-01 | 2012-12-19 | 中国石油天然气集团公司 | Packed hole deviation control and near-drill-bit decompression compound way-type drilling unit |
| CN105917073A (en) * | 2014-01-30 | 2016-08-31 | 兰德马克绘图国际公司 | Depth range manager for drill string analysis |
| CN107576353A (en) * | 2017-07-31 | 2018-01-12 | 上海大学 | A kind of fast appraisement method of pre-bending BHA working condition |
| CN107965278A (en) * | 2016-10-20 | 2018-04-27 | 中国石油化工股份有限公司 | A kind of drill assembly |
| CN108868607A (en) * | 2018-04-11 | 2018-11-23 | 上海大学 | A kind of gas drilling control wedged bottom portion hole assembly design method |
| CN113944428A (en) * | 2020-07-15 | 2022-01-18 | 中国石油化工股份有限公司 | Quality-improving and speed-increasing drilling tool for oil and gas well |
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| US4394881A (en) * | 1980-06-12 | 1983-07-26 | Shirley Kirk R | Drill steering apparatus |
| CN2632291Y (en) * | 2003-07-10 | 2004-08-11 | 上海大学 | Pre-curved dynamic quick operating connect joint against slant drilling |
| CN101260783A (en) * | 2008-02-29 | 2008-09-10 | 上海大学 | Prebending kinetics deviation control and fast drilling method |
| CN201396067Y (en) * | 2009-05-07 | 2010-02-03 | 中国石油天然气股份有限公司 | Down-hole drilling tool for increasing mechanical drilling rate of slim holes |
| CN201874463U (en) * | 2010-12-07 | 2011-06-22 | 中国石油集团西部钻探工程有限公司 | Safety anti-deviation drilling tool with half-piece type centralizers |
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Patent Citations (5)
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| US4394881A (en) * | 1980-06-12 | 1983-07-26 | Shirley Kirk R | Drill steering apparatus |
| CN2632291Y (en) * | 2003-07-10 | 2004-08-11 | 上海大学 | Pre-curved dynamic quick operating connect joint against slant drilling |
| CN101260783A (en) * | 2008-02-29 | 2008-09-10 | 上海大学 | Prebending kinetics deviation control and fast drilling method |
| CN201396067Y (en) * | 2009-05-07 | 2010-02-03 | 中国石油天然气股份有限公司 | Down-hole drilling tool for increasing mechanical drilling rate of slim holes |
| CN201874463U (en) * | 2010-12-07 | 2011-06-22 | 中国石油集团西部钻探工程有限公司 | Safety anti-deviation drilling tool with half-piece type centralizers |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828691A (en) * | 2012-08-01 | 2012-12-19 | 中国石油天然气集团公司 | Packed hole deviation control and near-drill-bit decompression compound way-type drilling unit |
| CN105917073A (en) * | 2014-01-30 | 2016-08-31 | 兰德马克绘图国际公司 | Depth range manager for drill string analysis |
| CN107965278A (en) * | 2016-10-20 | 2018-04-27 | 中国石油化工股份有限公司 | A kind of drill assembly |
| CN107965278B (en) * | 2016-10-20 | 2020-07-03 | 中国石油化工股份有限公司 | Drilling tool combination |
| CN107576353A (en) * | 2017-07-31 | 2018-01-12 | 上海大学 | A kind of fast appraisement method of pre-bending BHA working condition |
| CN107576353B (en) * | 2017-07-31 | 2019-07-23 | 上海大学 | A kind of fast appraisement method of pre-bending bottom drilling assembly working condition |
| CN108868607A (en) * | 2018-04-11 | 2018-11-23 | 上海大学 | A kind of gas drilling control wedged bottom portion hole assembly design method |
| CN113944428A (en) * | 2020-07-15 | 2022-01-18 | 中国石油化工股份有限公司 | Quality-improving and speed-increasing drilling tool for oil and gas well |
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Application publication date: 20111116 |