CN106703695B - The anti-oblique well straightening drill assembly of big bit pressure - Google Patents
The anti-oblique well straightening drill assembly of big bit pressure Download PDFInfo
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- CN106703695B CN106703695B CN201710035169.4A CN201710035169A CN106703695B CN 106703695 B CN106703695 B CN 106703695B CN 201710035169 A CN201710035169 A CN 201710035169A CN 106703695 B CN106703695 B CN 106703695B
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- drill
- thick
- quickly
- jig
- bit
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/10—Correction of deflected boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/16—Drill collars
Abstract
The present invention relates to a kind of big anti-oblique well straightening drill assembly of bit pressure, including drill bit, the thick drilling tool in lower part, drill collar and centralizer, the drill collar include lower part jig drill quickly, top jig drill quickly, the thick drill collar in top, drill bit, the thick drilling tool in lower part, lower part jig drill quickly, centralizer, top jig drill quickly, the thick drill collar in top is sequentially connected.The configuration of the present invention is simple is formed merely with typical well tool combinations, and cost of manufacture and use cost are low, and performance is stablized, and use process will not bring otherwise risk for drillng operation；By the thick drilling tool in lower part, lower part jig drill quickly, centralizer, top jig drill quickly, the composite structure that constitutes of the thick drill collar in top applies powerful pendulum force to drill bit and drill bit tangent bevel promoted to turn to the organic unity that the anti-bias correction in two kinds of drop angle direction acts on, anti-oblique well straightening excellent；When bit pressure is larger, anti-oblique effect is more obvious, and performance is not influenced by downhole condition, is conducive to the raising of bit speed；It can also be used in straight hole drilling, application range is wider.
Description
Technical field
The invention belongs to petroleum works technical fields, are related to drilling equipment, specifically, being related to a kind of petroleum, natural gas
Downhole assembly in drillng operation.
Background technique
The high steep straight prospect pit in stratum and directional well diameter segment deviation control with drilling straight well problem are always to perplex a technology of drilling well circle
Problem.With being continuously increased for drilling depth, which becomes further prominent.The deflecting control tool proposed at present includes conventional
Drilling tool and automatic vertical drilling tool two major classes.Conventional drilling tool mainly include tower drilling tool, pendulum assembly, packed hole assembly, partially
Axis drilling tool, weighting diplocardia spiral stabilizer anti-deflection drilling tool etc., these drilling tools are also referred to as " passive anti-deviation device ", but field application
The result shows that its drop angle ability of this kind of drilling tool is not able to satisfy the requirement of well depth, Holes of Complicated Wells and high-dip structure and large dip angle strata, have
Also seriously to hinder the raising of bit speed to sacrifice bit pressure as condition.Automatic vertical drilling tool mainly has
Power V system, the VertiTak system of BakerHughes Inteq company, the Germany's intelligence of Schlumberger company are public
ZEB system of department etc., these system application effects are preferable, but expense in use is excessively high, and work as stratum high temperature and pressure
When, performance is affected, and promotes and applies also restrained.Therefore, develop it is economical and practical, can adapt to big bit pressure quick drill
Into and the stable anti-oblique well straightening drill assembly of service performance have great importance to the Efficient Development of petroleum resources.
The Chinese invention patent document of 103742074 A of Publication No. CN discloses a kind of deviation prevention and fast drill assembly, tool
Body discloses following technical characteristic: deviation prevention and fast drill assembly includes the drill bit for passing sequentially through threaded connection, eccentric deviation lever
Structure pipe nipple, drill collar, centralizer.Also disclose following characteristics: bias is biased to lever construction pipe nipple, and both ends have drilling tool button, partially
The heart is biased to the axis that lever construction pipe nipple is equipped with through round duct, through round duct, drill bit and drill collar and is overlapped；Bias is biased to
Wall thickness, the wall of side of lever construction pipe nipple side are thin, seamlessly transit between wall thickness part and wall thin part, and bias is biased to lever
The thin side of structure pipe nipple wall is provided with rib close to one end of drill collar.The patent of invention is short by eccentric deviation lever construction
Section strengthens drill bit to effective cutting of the lower borehole wall and reduction drill axis and plumb line angle reciprocation, to reduce hole deviation
Effect.The patent of invention needs the eccentric lever construction pipe nipple of being biased to of special designing to combine with drill bit, drill collar and centralizer
It is able to achieve the effect for reducing hole deviation, is increased manufacturing cost, and result is relatively complicated.
Summary of the invention
It is simple, at low cost it is an object of the invention in view of the foregoing defects the prior art has, provide a kind of structure
The anti-oblique well straightening drill assembly of big bit pressure, may be implemented to apply powerful pendulum force to drill bit and promote using the drill assembly
Drill bit tangent bevel turns to drop angle direction, to reduce hole deviation or correct hole deviation.
In order to achieve the above object, the present invention provides a kind of big anti-oblique well straightening drill assembly of bit pressure, including drill bit, lower part
Thick drilling tool, drill collar and centralizer, the drill collar include lower part jig drill quickly, top jig drill quickly, the thick drill collar in top, drill bit, lower part are thick
Drilling tool, lower part jig drill quickly, centralizer, top jig drill quickly, the thick drill collar in top is sequentially connected.
Preferably, the thick drilling tool in lower part, lower part jig drill quickly, top jig drill quickly, the length of the thick drill collar in top, internal diameter and outer diameter root
It is designed and adjusts according to live wellbore actual conditions.
Preferably, the weight of the thick drill collar in top is greater than the weight of the thick drill collar in lower part.
Preferably, the thick drilling tool in lower part is drill collar or other drilling tools, and the outer diameter of the thick drilling tool in lower part is greater than lower part jig drill quickly
Outer diameter, the outer diameter of lower part jig drill quickly are not less than the outer diameter of minimum drill collar in live wellbore.
Preferably, the diametric fit of the outer diameter of the thick drilling tool in lower part and drill bit.
Preferably, the outer diameter of the thick drill collar in top is greater than the outer diameter of top jig drill quickly, and the outer diameter of top jig drill quickly is not less than existing
The outer diameter of minimum drill collar in the wellbore of field.
Preferably, the outer diameter of centralizer is less than the outer diameter of drill bit, and the diametric fit with drill bit.
Preferably, drill bit is to meet drilling engineering drill bit, and centralizer is the common centralizer of drilling well.
Further, when creeping into drop tendency wellbore or in build tendency wellbore, centralizer is fulcrum, and top is slightly bored
The lower borehole wall is quickly lain at, so that quickly intermediate lower bow, bottom upwarp top jig drill, lower part jig drill quickly bends on centre, and bottom is sagging,
While so that drill bit is born the thick drilling tool pendulum force in lower part, drilling direction is directed toward drop angle direction.
Further, when being crept into straight hole, lower part jig drill quickly, top jig drill quickly bend, make the drill set
It closes and is in vortex motion state.
Compared with prior art, the beneficial effects of the present invention are:
(1) structure of downhole assembly provided by the invention is simple, forms merely with typical well tool combinations, cost of manufacture and
Use cost is low compared to existing drilling tool, and performance is stablized, and use process will not bring otherwise wind for drillng operation
Danger.
(2) drill assembly provided by the invention by the thick drilling tool in lower part, lower part jig drill quickly, centralizer, top jig drill quickly, on
The composite structure that the thick drill collar in portion is constituted, which is realized, to be applied powerful pendulum force to drill bit and drill bit tangent bevel is promoted to turn to drop
The organic unity of two kinds of tilted direction anti-bias correction effects, anti-oblique well straightening excellent.
(3) drill assembly provided by the invention anti-oblique effect when bit pressure is larger is more obvious, can discharge bit pressure, and
Performance is not influenced by downhole condition, is conducive to the raising of bit speed.
(4) drill assembly provided by the invention can be used not only for rectifying a deviation, and can also be normally used for straight hole drilling, application
Range is wider.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the anti-oblique well straightening drill assembly of the big bit pressure of the embodiment of the present invention.
Fig. 2 is one schematic diagram of working condition of the anti-oblique well straightening drill assembly of the big bit pressure of the embodiment of the present invention.
Fig. 3 is two schematic diagram of working condition of the anti-oblique well straightening drill assembly of the big bit pressure of the embodiment of the present invention.
1, drill bit, 2, the thick drilling tool in lower part, 3, lower part jig drill quickly, 4, centralizer, 5, top jig drill quickly, 6, the thick drill collar in top.
Specific embodiment
In the following, the present invention is specifically described by illustrative embodiment.It should be appreciated, however, that not into one
In the case where step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiments
In.
Referring to Fig. 1, a kind of big anti-oblique well straightening drill assembly of bit pressure, including sequentially connected drill bit 1, the thick drilling tool 2 in lower part, under
Portion's jig drill quickly 3, centralizer 4, top jig drill quickly 5, the thick drill collar 6 in top.The thick drilling tool in lower part, lower part jig drill quickly, top jig drill quickly, on
Length, internal diameter and the outer diameter of the thick drill collar in portion are designed and adjust according to live wellbore actual conditions.
In use, drill bit 1 is located at shaft bottom, crept into for broken rock；The thick drilling tool 2 in lower part, lower part jig drill quickly 3, centralizer 4, on
Portion's jig drill quickly 5, the thick drill collar 6 in top combine composition composite structure, for changing the stress and drilling direction of drill bit,
To the change Drilling Tendency；The connection of the drill assembly of the thick drill collar in top and upper part.
For the ease of the dismounting of the above-mentioned drill assembly of the present invention, as preferred design, drill bit 1, the thick drilling tool 2 in lower part, lower part
Jig drill quickly 3, centralizer 4, top jig drill quickly pass sequentially through threaded connection between 5, the thick drill collar 6 in top.
When being crept into drop tendency wellbore, in order to creep into drill bit along drop angle direction, to the above-mentioned drill set of the present invention
It closes and carries out preferred design, the weight of the thick drill collar in top is greater than the weight of the thick drilling tool in lower part, on top under the action of thick drill collar weight,
The top of the thick drilling tool in lower part is tilted to wellbore flash, and drill bit is promoted to creep into along drop angle direction.
In order to meet the needs of drilling engineering, convenient for the use of drill assembly, bit speed is improved, to the above-mentioned brill of the present invention
Tool combination carries out preferred design, and the thick drilling tool in lower part is drill collar or other drilling tools, and the outer diameter of the thick drilling tool in lower part is greater than lower part jig drill
Outer diameter quickly, the outer diameter of lower part jig drill quickly are not less than the outer diameter of minimum drill collar in live wellbore.
In order to meet the needs of drilling engineering, raising bit speed carries out preferred design to the above-mentioned drill assembly of the present invention,
The outer diameter of the thick drilling tool in lower part and the diametric fit of drill bit.
In order to meet the needs of drilling engineering, convenient for the use of drill assembly, bit speed is improved, to the above-mentioned brill of the present invention
Tool combination carries out preferred design, and the outer diameter of the thick drill collar in top is greater than the outer diameter of top jig drill quickly, and the outer diameter of top jig drill quickly is not small
On site in wellbore minimum drill collar outer diameter.
In order to meet the needs of drilling engineering, convenient for the use of drill assembly, bit speed is improved, to the above-mentioned brill of the present invention
Tool combination carries out preferred design, and the outer diameter of centralizer is less than the outer diameter of drill bit, and the diametric fit with drill bit.
The above-mentioned drill assembly of the present invention, drill bit are to meet drilling engineering drill bit, and drilling well normal drill bit can be used, can also
Using the drill bit of other special designings, as long as meeting drilling engineering use.Centralizer is the common centralizer of drilling well, can be adopted
With spiral centering device or straight rib centralizer.
The above-mentioned anti-oblique well straightening mechanism of drill assembly is to apply powerful pendulum force and rush to drill bit using the thick drilling tool in lower part
Drill bit tangent bevel is set to turn to drop angle direction to realize the anti-oblique well straightening of synergy.Below with reference to the drillng operation in different wellbores
The anti-oblique correction of the above-mentioned drill assembly of the present invention is illustrated.
Embodiment one: implementing drillng operation in drop tendency wellbore using above-mentioned drill assembly, in drilling, referring to figure
2, centralizer 4 serves as fulcrum role, uses as fulcrum, and the thick drill collar 6 in top lies at the lower borehole wall, so that top jig drill quickly 5
The lower bow in centre, bottom upwarp, lower part jig drill quickly among 3 on bend, bottom is sagging, and drill bit 1 is made to bear thick 2 pendulum force of drilling tool in lower part
Meanwhile drilling direction is directed toward drop angle direction, applies powerful pendulum force to realize to drill bit while promoting drill bit tangent bevel
It turns to drop angle direction and carrys out the anti-oblique well straightening of synergy.
Embodiment two: implementing drillng operation in build tendency wellbore using above-mentioned drill assembly, in drilling, referring to figure
3, centralizer 4 serves as fulcrum role, uses as fulcrum, and the thick drill collar 6 in top lies at the lower borehole wall, so that top jig drill quickly 5
The lower bow in centre, bottom upwarp, lower part jig drill quickly among 3 on bend, bottom is sagging, and drill bit 1 is made to bear thick 2 pendulum force of drilling tool in lower part
Meanwhile drilling direction is directed toward drop angle direction, applies powerful pendulum force to realize to drill bit while promoting drill bit tangent bevel
It turns to drop angle direction and carrys out the anti-oblique well straightening of synergy.
Embodiment three: implementing drillng operation using above-mentioned drill assembly in straight hole, in drilling, lower part jig drill quickly 3,
Top jig drill quickly 5 bends, and the drill assembly is made to be in vortex motion state.Situ of drilling well application shows bottom drilling assembly whirlpool
Dynamic state has deviation control with drilling straight well effect, and therefore, the operation in straight hole, the above-mentioned drill assembly of the present invention is imitated with deviation control with drilling straight well
Fruit.
Above-described embodiment is used to explain the present invention, rather than limits the invention, in spirit and right of the invention
It is required that protection scope in, to any modifications and changes for making of the present invention, both fall within protection scope of the present invention.
Claims (4)
1. a kind of anti-oblique well straightening drill assembly of big bit pressure, including drill bit, the thick drilling tool in lower part, drill collar and centralizer, which is characterized in that
The drill collar include lower part jig drill quickly, top jig drill quickly with the thick drill collar in top, drill bit, the thick drilling tool in lower part, lower part jig drill quickly, righting
Device, top jig drill are quickly, the thick drill collar in top is sequentially connected；The thick drilling tool in lower part, lower part jig drill quickly, top jig drill quickly, the thick drill collar in top
Length, internal diameter and outer diameter be designed and adjust according to live wellbore actual conditions；The weight of the thick drill collar in top is greater than lower part
The weight of thick drilling tool；The thick drilling tool in lower part is drill collar or other drilling tools, and the outer diameter of the thick drilling tool in lower part is greater than lower part jig drill quickly outer
Diameter, the outer diameter of lower part jig drill quickly are not less than the outer diameter of minimum drill collar in live wellbore；The outer diameter of the thick drilling tool in lower part and drill bit it is straight
Diameter cooperation；The outer diameter of the thick drill collar in top is greater than the outer diameter of top jig drill quickly, and the outer diameter of top jig drill quickly is not less than in live wellbore
The outer diameter of minimum drill collar；When being crept into straight hole, lower part jig drill quickly, top jig drill quickly bend, make the drill assembly
In vortex motion state.
2. the anti-oblique well straightening drill assembly of big bit pressure as described in claim 1, which is characterized in that the outer diameter of centralizer is less than drill bit
Outer diameter, and the diametric fit with drill bit.
3. the anti-oblique well straightening drill assembly of big bit pressure as claimed in claim 1 or 2, which is characterized in that drill bit is to meet spudder
Journey drill bit, centralizer are the common centralizer of drilling well.
4. the anti-oblique well straightening drill assembly of big bit pressure as described in claim 1, which is characterized in that in drop tendency wellbore or increase
In oblique trend wellbore when drilling, centralizer is fulcrum, and the thick drill collar in top lies at the lower borehole wall, so that top jig drill is quickly under centre
Bow, bottom upwarps, and lower part jig drill quickly bends on centre, and bottom is sagging, while so that drill bit is born the thick drilling tool pendulum force in lower part, drilling
It is directed toward drop angle direction in direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035169.4A CN106703695B (en) | 2017-01-18 | 2017-01-18 | The anti-oblique well straightening drill assembly of big bit pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035169.4A CN106703695B (en) | 2017-01-18 | 2017-01-18 | The anti-oblique well straightening drill assembly of big bit pressure |
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| CN106703695A CN106703695A (en) | 2017-05-24 |
| CN106703695B true CN106703695B (en) | 2019-10-18 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278083B (en) * | 2018-01-24 | 2023-08-01 | 西南石油大学 | Downhole tool for realizing automatic vertical drilling by utilizing cam four-bar mechanism |
| CN108071342B (en) * | 2018-01-31 | 2023-09-29 | 吉林大学 | Adjustable reposition of redundant personnel unbalance weight synergism formula drilling tool |
| CN109281612A (en) * | 2018-09-29 | 2019-01-29 | 中国石油大学(华东) | A kind of high speed rotating drilling anti-inclining drill combination |
| CN111140173B (en) * | 2019-12-30 | 2021-06-01 | 中煤科工集团西安研究院有限公司 | Horizontal directional core drilling straightening and deviation correcting drilling tool and drilling method |
| CN113513265A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Rigid-flexible deformation anti-deviation quick drilling tool combination |
| CN112610158B (en) * | 2020-12-14 | 2022-09-13 | 中国石油大学(华东) | Intelligent vertical drilling system and drilling method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4015673A (en) * | 1974-07-11 | 1977-04-05 | Standard Oil Company (Indiana) | Directional drilling system |
| CN1018747B (en) * | 1990-05-09 | 1992-10-21 | 四川石油管理局钻采工艺研究所 | Combined lower drill tool for decreasing batter of well |
| CN2545351Y (en) * | 2002-04-27 | 2003-04-16 | 石油勘探开发科学研究院钻井工艺研究所 | Counterclockwise drilling tool assembly |
| CN202900044U (en) * | 2012-11-16 | 2013-04-24 | 中国石油天然气股份有限公司 | Double stabilizer prebuckling dynamics pendulum drilling assembly |
| CN103742074B (en) * | 2013-12-25 | 2015-12-30 | 中国石油大学(华东) | A kind of deviation prevention and fast drilling assembly |
| CN203783463U (en) * | 2014-03-18 | 2014-08-20 | 四川海沃石油工程技术有限公司 | Anti-deviation straight-drilling combined drilling tool for drilling engineering |
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