CN109306848A - A kind of double revolving speed drilling rigs of twin-stage - Google Patents
A kind of double revolving speed drilling rigs of twin-stage Download PDFInfo
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- CN109306848A CN109306848A CN201710634126.8A CN201710634126A CN109306848A CN 109306848 A CN109306848 A CN 109306848A CN 201710634126 A CN201710634126 A CN 201710634126A CN 109306848 A CN109306848 A CN 109306848A
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- speed change
- assembly
- level
- change commutation
- drill bit
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- 238000005553 drilling Methods 0.000 title claims abstract description 58
- 230000008859 change Effects 0.000 claims abstract description 89
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 22
- 238000010168 coupling process Methods 0.000 claims abstract description 22
- 238000005859 coupling reaction Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 12
- 239000011435 rock Substances 0.000 abstract description 21
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000035515 penetration Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 238000000429 assembly Methods 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 10
- 239000003921 oil Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 210000003456 pulmonary alveoli Anatomy 0.000 description 2
- 210000003781 tooth socket Anatomy 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/006—Mechanical motion converting means, e.g. reduction gearings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to the double revolving speed drilling rigs of one of the industry fields such as oil and gas well drilling, geological prospecting, mine probing, cbm development twin-stage, including outer housing, power assembly, Hooks coupling universal coupling, central axis, speed change commutation input assembly, speed change commutation conversion assembly, speed change commutation output assembly and second level drill bit, level-one bit adapter.The device is mounted on bottom hole assemblies lower part, a small size, which is drilled out, using the high feature of the small drill bit broken rock rate of the first order leads eye, since rock part stress has discharged, to reduce second level larger size drill bit broken rock difficulty, it is improved wellbore entirety rate of penetration, and the control for being conducive to direction of deflection and stick slip vibration, for improving deep-well, ultra-deep well drilling speed, extending drill string and drilling life of bit has important practical significance.Meanwhile the double revolving speed drilling rigs of twin-stage also have the advantages that structure is simple and convenient to operate, is easily installed, is safe and reliable.
Description
Technical field
The present invention relates to a kind of double revolving speed drilling rigs of twin-stage, belong to oil and gas well drilling, CBM Drilling, geology and survey
It visits, mine drilling equipment field.
Background technique
With the fast development of oil-gas field development difficulty increasingly increased with drilling technology, oil gas field wants drilling speed
Ask growing day by day, especially deep-well, ultradeep well, complex structural well (long horizontal sections horizontal well, extended reach well, Multilateral Wells etc.) quantity
It is continuously increased, in drilling process, with the increase of drilling well well depth, not only drilling well head of liquid aggravates shaft bottom chip hold down effect,
And the intensity of formation rock itself, vertical crustal stress, horizontal crustal stress etc. are increase accordingly, and formation rock drillability is deteriorated, and leads
Cause rate of penetration reduce, not only affect the control of wellbore quality, and seriously affect full well drilling period and drilling well at
This.
Drilling practice shows that twin-stage drilling technology drills out a small ruler using the high feature of the small drill bit broken rock rate of the first order
It is very little to lead eye, then when second level larger size drill bit broken rock, since the part stress of rock has discharged, to reduce larger
The difficulty of size drill bit broken rock so that wellbore entirety rate of penetration is improved, and shakes for direction of deflection and drilling tool stick-slip
Dynamic control also has certain positive effect, is a kind of more satisfactory drilling technology.Patent 201210011193.1 mentions one
Kind twin-stage double-speed well drilling tool, although this structure realizes the function that twin-stage bores first two revolving speed, but there are still the followings
Deficiency cannot fully meet the requirement of live drilling technology.(1) second level drill bit is connect with drill string, rotary power and torsion
Square is provided by ground, and the broken rock revolving speed expanded reach of second level drill bit is limited；(2) two-stage drill bit turns to identical, can not achieve two
Effect (the bottom rock compression strength > shearing strength > tensile strength, therefore shearing-crushing more has of grade drill bit shearing-crushing rock
Conducive to the broken of rock)；(3) two-stage drill bit cutting speed difference is big, leads to two-stage drill bit bit pressure unreasonable distribution, it is difficult to play
The advantage of drilling bit high-speed cutting drilling, easily causes two-stage drill bit abrasion unbalanced, influences whole bit speed；(4) cannot expire
The process specifications of slide drilling in sufficient complex structural well drilling process；(5) direction of deflection and drill string not can be effectively controlled
Stick slip vibration.Therefore it is badly in need of designing a kind of actual requirement that can satisfy live drilling technology, and structure is simple, performance can
It leans on, control precision is high, and the double revolving speed drilling rigs of easy to operate downhole double-stage give full play to the advantage of twin-stage drilling technology, drop
The influence of low drillstring vibrations improves the control precision of well track, extends the service life of drill string and drill bit, meets oil gas field and open
Hair mentions drilling engineering the technical requirements of effect.
Summary of the invention
The purpose of the invention is to play twin-stage drilling technology to greatest extent the deep-well, ultra-deep well drilling during
Advantage, mention _ rate of penetration shorten drilling period reduce overall cost while, reduce shaft bottom stick slip vibration harm mention _ well
The control force of rectangle position, extends the service life of drill string and drill bit, provides a kind of double revolving speed drilling rigs of twin-stage.
The technical scheme is that
A kind of double revolving speed drilling rigs of twin-stage include outer housing 1, power assembly 2, Hooks coupling universal coupling 3, central axis 4, speed change commutation
Input assembly 6, speed change commutation conversion assembly 8, speed change commutation output assembly and second level drill bit, level-one bit adapter, in which: power
Assembly 2 is connected to the upper end of central axis 4 by Hooks coupling universal coupling 3, and 4 top of central axis is machined with by-pass prot 5, level-one bit adapter
19 are connected to 4 lower end of central axis, and speed change commutation input assembly 6 is fixedly connected with central axis 4, and speed change commutation conversion assembly 8 passes through
Rotary shaft 9 is mounted in outer housing 1, and speed change commutation output assembly 10 is fixedly connected with second level drill bit 16；Speed change commutation input is total
Cooperate at 6 with speed change commutation conversion assembly 8, speed change commutation conversion assembly 8 and speed change commutation output assembly 10 cooperate；Second level drill bit
Rotatory sealing cooperation is constituted between 16 and outer housing 1 and central axis 4.
Above scheme further include:
Speed change commutation input assembly 6 and speed change commutation conversion assembly 8 and speed change commutation conversion assembly 8 and speed change commutation output are total
It is Alveolus type cooperation at 10.
Pressure-loaded bearing 14 is installed, level-one bit adapter 19 and speed change commutation output are total between outer housing 1 and second level drill bit 16
At pressure-loaded bearing 18 is installed between 10,19 outer wall of level-one bit adapter and 16 inner wall of second level drill bit are inlaid with wear plate, submit
Wrong shape arrangement.
It commutates to design between output assembly 10 and 1 inner wall of outer housing in speed change and is machined with oil storage tank 11, it is close in oil storage tank 11
Envelope has high-temperature and high-presure resistent lubricating oil.
Between second level drill bit 16 and outer housing 1, speed change commutation output assembly 10 and outer housing 1 and central axis 4 between, speed change
Sealing device 12,13,17 and 7 is installed respectively, speed change commutation output assembly 10 is between commutation input assembly 6 and outer housing 1
Bearing 15 is installed between mandrel 4.
Speed change commutation input assembly 6, speed change commutation converts assembly 8, speed change commutation exports the tooth socket ratio of assembly 10 to be a variety of
Combine adjustment structure.
The double revolving speed drilling rigs of twin-stage of the invention are mounted on drill assembly lower part, can connect conventional bit or special drill bit
It connects on level-one bit adapter, when drilling well, drilling fluid drives power assembly rotation, and power assembly passes through in Hooks coupling universal coupling driving
Central axis, central axis drive speed change commutation input assembly rotation, speed change commutation input assembly driving speed change commutation conversion assembly
Rotation, speed change commutation conversion assembly driving speed change commutation output assembly rotation, speed change commutation output assembly driving second level drill bit rotation
Turn, the steering of second level drill bit is different from central axis at this time, according to underground actual condition, can design the more set speed change commutation inputs of processing
The combination of assembly, speed change commutation conversion assembly, speed change commutation output assembly, so as to conveniently realize that second level drill bit turns
Speed is identical or different with level-one drill speed, meets the broken rock requirement of different subsurface environments.
Drilling fluid reaches level-one drill bit after power assembly, through central axis by-pass prot, and by the hydrophthalmia on level-one drill bit
Injection completes the functions such as bottom-hole cleaning landwaste, cooling level-one, second level drill bit, and enters on annular space and return to ground.Theoretical values mould
Quasi- and laboratory experiment the result shows that, level-one drill bit leading second level bit contact shaft bottom and broken rock, and size is smaller, efficiency of breaking rock
High, required energy is small, since the part stress in bottom rock is released, to reduce the broken of second level larger size drill bit
Rock difficulty, while two-stage drill bit turns on the contrary, the effect of torsional shear rock is realized, so that the bit speed of whole wellbore is big
Jin Bi mentions quotient.
Live Full Scale Unit Analysis of application result shows that Xinjiang region deep-well upper formation drilling speed improves 74.1%, lower part
Stratum drilling speed improves 48.6%, and deflecting control is good, and ground pump energy consumption reduces by 33.7%;Sichuan province deep-well upper formation
Drilling speed improves 72.9%, and understratum drilling speed improves 43.7%, and wellbore quality meets design standard, and bit grinding loss rate reduces, and realizes
The purpose of low energy consumption, fast drilling well.Since two-stage drill bit can independently rotate broken rock, a kind of double revolving speed drilling wells of twin-stage
Device can realize that the rapidly and efficiently drilling of complex structural well, sharpest edges are in conjunction with conventional Underwell guide tool, by
It is turned to level-one drill bit on the contrary, revolving speed is adjustable, by accurately calculating, matching rationally, it will be able to eliminate underground and lead in second level drill bit
Influence (reaction torque is the critical issue urgently solved in current domestic conventional navigational drilling techniques) to tool reaction torque, favorably
Stabilization in drilling tool face improves the control of complex structural well (long horizontal sections horizontal well, extended reach well, Multilateral Wells etc.) track
Precision.
The double revolving speed drilling rigs of twin-stage of the invention for deep-well, ultradeep well, complex structural well efficient quick drill into, well
The control of body quality, reduces energy consumption and overall cost, increases economic efficiency with important the service life for extending drill bit and drilling tool
Meaning, while also having broken external technology (rotary steerable drilling technology) monopolization in complex structural well control process aspect, it is real
The purpose for completing complex structural well using low-cost technologies is showed, there is important social value and economic value.Also there is knot
Structure design is simple, reliable performance, it is easy to operate the features such as.
Detailed description of the invention
Fig. 1 is the double revolving speed drilling rig example structure schematic diagrams of a kind of twin-stage proposed according to the present invention.
In figure: 1_ outer housing, 2- power assembly, 3- Hooks coupling universal coupling, 4- central axis, 5- by-pass prot, the commutation of 6- speed change are defeated
Enter assembly, 7- sealing device, 8- speed change commutation conversion assembly, 9- rotary shaft, 10- speed change commutation output assembly, 11- oil storage tank,
12- sealing device, 13- sealing device, 14- pressure-loaded bearing, 15- bearing, 16- second level drill bit, 17- sealing device, 18- backup rolls
It holds, 19- level-one bit adapter.
Specific embodiment
Carry out the present invention is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
Such as Fig. 1, a kind of double revolving speed drilling rigs of twin-stage include outer housing 1, power assembly 2, Hooks coupling universal coupling 3, central axis 4, become
Quick change exports assembly and second level drill bit, level-one bit adapter to input assembly 6, speed change commutation conversion assembly 8, speed change commutation,
In: power assembly 2 is connected to the upper end of central axis 4 by Hooks coupling universal coupling 3, and 4 top of central axis is machined with by-pass prot 5, level-one
Bit adapter 19 is connected to 4 lower end of central axis, and speed change commutation input assembly 6 is fixedly connected with central axis 4, and speed change commutation conversion is total
It is mounted in outer housing 1 at 8 by rotary shaft 9, speed change commutation output assembly 10 is fixedly connected with second level drill bit 16；Speed change commutation
It inputs assembly 6 and speed change commutation conversion assembly 8 cooperates, speed change commutation conversion assembly 8 and speed change commutation output assembly 10 cooperate；Two
Rotatory sealing cooperation is constituted between grade drill bit 16 and outer housing 1 and central axis 4；.
Embodiment 2
On the basis of above-described embodiment 1 further include: speed change commutation input assembly 6 is changed with speed change commutation conversion assembly 8 and speed change
It is Alveolus type cooperation to conversion assembly 8 and speed change commutation output assembly 10.
Pressure-loaded bearing 14 is installed, level-one bit adapter 19 and speed change commutation output are total between outer housing 1 and second level drill bit 16
At pressure-loaded bearing 18 is installed between 10,19 outer wall of level-one bit adapter and 16 inner wall of second level drill bit are inlaid with wear plate, submit
Wrong shape arrangement.
Embodiment 3
On the basis of the above embodiments further include: commutate to design between output assembly 10 and 1 inner wall of outer housing in speed change and process
There is oil storage tank 11, high-temperature and high-presure resistent lubricating oil is sealed in oil storage tank 11.
Between second level drill bit 16 and outer housing 1, speed change commutation output assembly 10 and outer housing 1 and central axis 4 between, speed change
Sealing device 12,13,17 and 7 is installed respectively, speed change commutation output assembly 10 is between commutation input assembly 6 and outer housing 1
Bearing 15 is installed between mandrel 4.
Speed change commutation input assembly 6, speed change commutation converts assembly 8, speed change commutation exports the tooth socket ratio of assembly 10 to be a variety of
Combine adjustment structure.
Exemplary embodiments 4
Power assembly 2 is connected to the upper end of central axis 4 by Hooks coupling universal coupling 3, is machined with by-pass prot 5 on central axis 4, speed change is changed
It is fixedly connected to input assembly 6 with central axis 4, speed change commutation conversion assembly 8 is mounted on outer housing 1, and speed change commutation output is total
It at installation bearing 15 between 10 and central axis 4, and is fixedly connected with second level drill bit 16, speed change commutation input assembly 6 and outer housing 1
It is installed between inner wall and sealing device 13, second level is installed between sealing device 7, speed change commutation output assembly 10 and 1 inner wall of outer housing
Sealing device 12, speed change commutation input assembly 6 and speed change commutation conversion assembly are installed respectively between 1 outer wall of drill bit 16 and outer housing
8 cooperations, speed change commutation conversion assembly 8 and speed change commutation output assembly 10 cooperate, in speed change commutation output assembly 10 and outer housing 1
Design is machined with oil storage tank 11 between wall, and pressure-loaded bearing 14, level-one bit adapter 19 are installed between second level drill bit 16 and outer housing 1
It is connected to 4 lower end of central axis, level-one bit adapter 19 and speed change commutation output assembly 10 install pressure-loaded bearing 18, and level-one drill bit connects
First 19 outer wall and 16 inner wall of second level drill bit are inlaid with wear plate.
The device of above-described embodiment is mounted on drill assembly lower part, and conventional bit or special drill bit can be connected to level-one brill
On head connector, when drilling well, drilling fluid drives power assembly rotation, power assembly by Hooks coupling universal coupling driving central axis rotation,
Central axis drives speed change commutation input assembly rotation, speed change commutation input assembly driving speed change commutation conversion assembly rotation, speed change
Commutation conversion assembly driving speed change commutation output assembly rotation, speed change commutation output assembly drive second level bit, and at this time two
The steering of grade drill bit is different from central axis, according to underground actual condition, can design the processing more conversion of set speed change input assemblies, speed change
The combination of commutation conversion assembly, speed change commutation output assembly, so as to conveniently realize second level drill speed and level-one
Drill speed is identical or different, meets the broken rock requirement of different subsurface environments.Drilling fluid is after power assembly, by central axis
Through-hole reaches level-one drill bit, and is sprayed by the hydrophthalmia on level-one drill bit, completes bottom-hole cleaning landwaste, cooling level-one, second level drill bit
Etc. functions, and enter annular space on return to ground.
Claims (1)
1. a kind of double revolving speed drilling rigs of twin-stage, it is characterized in that include outer housing (1), power assembly (2), Hooks coupling universal coupling (3),
Central axis (4), speed change commutation input assembly (6), speed change commutation conversion assembly (8), speed change commutation output assembly and second level drill bit,
Level-one bit adapter, in which: power assembly (2) is connected to the upper end of central axis (4), central axis (4) by Hooks coupling universal coupling (3)
Top is machined with by-pass prot (5), and level-one bit adapter (19) is connected to central axis (4) lower end, speed change commutation input assembly (6) with
Central axis (4) is fixedly connected, and speed change commutation conversion assembly (8) is mounted in outer housing (1) by rotary shaft (9), speed change commutation
Output assembly (10) is fixedly connected with second level drill bit (16)；Speed change commutation input assembly (6) is matched with speed change commutation conversion assembly (8)
It closes, speed change commutation conversion assembly (8) and speed change commutation output assembly (10) cooperation；Second level drill bit (16) and outer housing (1) and in
Rotatory sealing cooperation is constituted between mandrel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710634126.8A CN109306848A (en) | 2017-07-29 | 2017-07-29 | A kind of double revolving speed drilling rigs of twin-stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710634126.8A CN109306848A (en) | 2017-07-29 | 2017-07-29 | A kind of double revolving speed drilling rigs of twin-stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109306848A true CN109306848A (en) | 2019-02-05 |
Family
ID=65204953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710634126.8A Withdrawn CN109306848A (en) | 2017-07-29 | 2017-07-29 | A kind of double revolving speed drilling rigs of twin-stage |
Country Status (1)
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| CN (1) | CN109306848A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215477A (en) * | 2021-12-16 | 2022-03-22 | 中国石油天然气股份有限公司 | Bidirectional rotary drilling multi-branch fishbone well completion production increasing tool |
-
2017
- 2017-07-29 CN CN201710634126.8A patent/CN109306848A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215477A (en) * | 2021-12-16 | 2022-03-22 | 中国石油天然气股份有限公司 | Bidirectional rotary drilling multi-branch fishbone well completion production increasing tool |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190205 |
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| WW01 | Invention patent application withdrawn after publication |