CN106522829A - Churn screw drill for drilling - Google Patents
Churn screw drill for drilling Download PDFInfo
- Publication number
- CN106522829A CN106522829A CN201611058371.0A CN201611058371A CN106522829A CN 106522829 A CN106522829 A CN 106522829A CN 201611058371 A CN201611058371 A CN 201611058371A CN 106522829 A CN106522829 A CN 106522829A
- Authority
- CN
- China
- Prior art keywords
- water cap
- assembly
- inlet opening
- drilling
- baffle plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000001802 infusion Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 239000011253 protective coating Substances 0.000 claims description 2
- 210000001138 tear Anatomy 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000012546 transfer 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
- E21B6/00—Drives for drilling with combined rotary and percussive action
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydraulic Motors (AREA)
Abstract
The invention provides a churn screw drill for drilling. The churn screw drill for drilling comprises a bypass valve assembly, an anti-falling assembly, a motor assembly, a universal shaft assembly and a transmission shaft assembly, wherein the universal shaft assembly comprises a universal shaft assembly housing and a universal shaft; the transmission shaft assembly comprises a water cap and a transmission shaft; the universal shaft, the water cap and the transmission shaft are sequentially connected through screw threads; a main liquid delivery hole is formed in the center of the water cap; a plurality of water cap liquid inflow holes which are evenly distributed in a circular array mode and communicate with the main liquid delivery hole are formed in the side face of the water cap; a liquid delivery channel communicating with the lower end of the main liquid delivery hole is arranged in the center of the transmission shaft; a stop baffle is installed on the inner side of the universal shaft assembly housing; and the water cap liquid inflow holes are covered with the stop baffle when rotated to the stop baffle, so that the total liquid inflow area of the water cap is decreased. The churn screw drill for drilling has the beneficial effects that through the design, torsion and rotation speed of the motor assembly can be periodically changed, thus, a motor can generate continuous torsion while high-frequency low-amplitude torsion impact shock is transferred to a drill bit, and accordingly the jamming and slippage phenomena of the drill bit are avoided.
Description
Technical field
The present invention relates to drilling tool technical field, more particularly, to a kind of drilling well helicoid hydraulic motor that spins.
Background technology
With the continuous development of oil-gas exploration and development, oil gas field accounts for whole Oil/gas Well when middle-deep well, the ratio of ultradeep well
Ratio is continuously increased.But the formation rock intensity of deep-well is big, abrasiveness is high, drillability is poor, makes drilling tool beat serious, ultimately result in
Drilling speed is slow, drilling period length, drilling cost increase.In addition, when drill bit rock breaking capacity is not enough, the drill bit moment of wedging rock stops
Rotation stop is moved, and the energy that drill string rotating is put aside at drill bit reaches the critical value on shearing-crushing stratum, now drill bit moment high speed
Drill string energy is rotated and discharges, subsequently whole drill string enters " card-sliding " circulation.The appearance of " card-sliding " phenomenon, directly causes random
The vibrations of rule, apply much higher than usual on PDC (Polycrystalline Diamond Compact bit) bit teeth
Shock loading, causes drill bit premature failure, can also shorten the use of BHA (bottom hole assembly) BHA
In the life-span, finally can also affect wellbore quality.
Research shows can be by periodically applying the torsional pulse of small size high frequency aiding in drill bit to improve entering drill bit
Efficiency of breaking rock, can effectively alleviate the series of problems caused due to " card-sliding " phenomenon of drill bit or BHA in drilling process.By
This is visible, how to work out a kind of drilling well helicoid hydraulic motor that spins, simultaneously same with providing stable broken rock power for PDC drill bit
When apply frequency low-amplitude torsional pulse the characteristics of shake, so as to significantly reduce the probability of happening of " card-sliding " phenomenon of drill bit, significantly
Rate of penetration is improved, extends bit life, reduced drilling cost, be current those skilled in the art's problem demanding prompt solution.
The content of the invention
In order to solve the above problems, the invention provides one kind can provide stable broken rock power while applying for PDC drill bit
Plus the drilling well helicoid hydraulic motor that spins of frequency low-amplitude torsional pulse vibrations.
A kind of drilling well helicoid hydraulic motor that spins of the present invention, including the by-pass valve assembly being from top to bottom sequentially connected, it is anti-lost always
Into, motor assembly, universal axle assembly and driving-shaft assembly.The universal axle assembly includes universal drive shaft assembly shell and is located at described
Inside universal drive shaft assembly shell and the universal drive shaft that arranges of coaxial line, the driving-shaft assembly includes water cap and power transmission shaft, institute
State universal drive shaft, the water cap and the power transmission shaft and pass sequentially through screwed connection and fix.
The water cap center is provided with main infusion hole, the water cap side be provided with multiple rounded arrays be uniformly distributed and with institute
State the water cap inlet opening that main infusion hole connects, circular array that the water cap inlet opening is constituted, the main inlet opening are and institute
The setting of water cap coaxial line is stated, the center transmission shaft offers the liquid supplying passage being connected with the main infusion hole lower end；
During work, the mud of aided drilling equipment slush pump output is entered by the by-pass valve assembly and passes through the motor assembly and institute
State universal axle assembly and the liquid supplying passage is entered into by the water cap inlet opening and reached in the bit port of drilling tool again.
Choked flow baffle plate is installed on the inside of the universal drive shaft assembly shell, the choked flow baffle plate is outer with the water cap inlet opening
Port is located at same level height, can be hidden by the choked flow baffle plate when the water cap inlet opening is turned at the choked flow baffle plate
Cover, make total feed liquor area of the water cap diminish.
Further, the quantity of the water cap inlet opening is four；The choked flow baffle plate width is more than the water cap feed liquor
The aperture in hole and be less than two times of apertures.
Further, the side of the water cap is for cylindric, and the choked flow baffle plate is one block of steel plate with radian, the resistance
On the inside of stream baffle plate, cambered surface is brought into close contact with the water cap outer ledge.
Further, the water cap inlet opening is inclined upwardly setting along the main infusion hole central axis, the main transfusion
Angle between hole and the water cap inlet opening is 40-60 °.
Further, the protection painting that Anti-erosion weares and teares is scribbled on the choked flow baffle plate and the contact surface of the water cap inlet opening
Layer.
A kind of drilling well helicoid hydraulic motor that spins of the present invention, compared with prior art with advantages below：
First, the drilling well with the helicoid hydraulic motor that spins by being multiple and rounded battle array by the quantitative design of water cap inlet opening
Row are uniformly distributed, and the circular array of water cap inlet opening composition, main inlet opening are arranged with water cap coaxial line, and center transmission shaft is opened up
There is the liquid supplying passage being connected with main infusion hole lower end, the feed liquor area of choked flow baffle plate periodically-varied water cap can be made.By
In drilling tool operationally, the drilling fluid such as mud flows through by-passing valve into the motor in motor assembly, imports and exports to form one in motor
Level pressure difference promotes the rotor rotation of motor, and moment of torsion and rotating speed are passed to drill bit by universal drive shaft and power transmission shaft, hence with
This periodic change can make motor pressure drop and flow through motor assembly drilling fluid such as mud uniform flow that respective cycle also occurs
Change, and then the torsion and rotating speed of periodically-varied motor assembly generation.Using this torsion for having frequency in drilling process
Changing with rotating speed enables motor to produce lasting torsion and pass to drill bit with the vibrations of frequency low-amplitude torsional pulse, so as to significantly
The probability of happening of " card-sliding " phenomenon of drill bit is reduced, rate of penetration is greatly improved, is extended bit life, reduce drilling cost.
Second, the drilling well is located at sustained height with water cap inlet opening with choked flow baffle plate in the helicoid hydraulic motor that spins, then work as choked flow
The length of baffle plate can meet masking water cap inlet opening, change the purpose of drilling well flow velocity slightly larger than water cap inlet opening aperture, this
Sample not only makes choked flow baffle plate more compact to take up room so as to reduce which, and the also installation and operation for drilling tool provides facility.In order to
Further reduce the volume of choked flow baffle plate, so the quantity of water cap inlet opening is set to four, choked flow baffle plate width is more than water cap
The aperture of inlet opening and be less than two times of apertures.At the same time, this design also causes choked flow baffle plate to cover just a water every time
Cap inlet opening, so that drilling well flow velocity periodically reduces a quarter, the motor pressure drop and drilling well produced by the decrement
Flow velocity is more obvious, and this period of change is easier to meet the requirement of frequency low-amplitude torsion, and then shakes beneficial to frequency is reached
The more particularly suitable torsional pulse vibrating effect of width size.
3rd, the drilling well causes the resistance that increase to water cap rotation in order to reduce choked flow baffle plate with the helicoid hydraulic motor that spins,
So choked flow baffle plate is set to the steel plate with radian, and with plate on the inside of on the outside of cambered surface and water cap the face of cylinder be brought into close contact, due to institute
State that both curvature are identical so this is designed to reduce the degree of wear each other, simultaneously as contact surface more agree with can be with
The choked flow ability of reinforcing choked flow baffle plate.In addition, the protective coating by Anti-erosion abrasion is coated on both contact surfaces
Can reach further reduces the purpose of the degree of wear, so that the service life of water cap and choked flow baffle plate is significantly extended.
4th, the drilling well with the helicoid hydraulic motor that spins in order that drilling fluid more smoothly enters water cap by universal axle assembly
In inlet opening, so water cap inlet opening is designed as structure acclivitous along main infusion hole central axis.By main infusion hole with
It is then in order that greater number of drilling fluid pours in water cap at faster speed and enters that angle between water cap inlet opening is 40-60 °
Fluid apertures, so as to improve the transfer efficiency of drilling fluid.
Description of the drawings
Fig. 1 is that the present invention is intended to along longitudinal section view of its center axis；
Fig. 2 is transverse sectional view of the present invention along line A-A.
In figure：1st, by-pass valve assembly, 2, anti-lost assembly, 3, motor assembly, 4, universal axle assembly, 5, drive assembly, 401,
Choked flow baffle plate, 402, universal drive shaft assembly shell, 501, water cap, 502, water cap inlet opening, 503, power transmission shaft.
Specific embodiment
In order to be better understood from the present invention, the present invention is further retouched with reference to specific embodiments and the drawings
State.
Fig. 1 includes drilling tool top half structure chart a and the latter half structure chart b.As shown in Figure 1-2, the present invention is
A kind of drilling well helicoid hydraulic motor that spins, it is by by-pass valve assembly 1, anti-lost assembly 2, motor assembly 3, universal axle assembly 4, power transmission shaft
Assembly 5 is constituted.Universal drive shaft in universal axle assembly 4 uses screwed connection successively with water cap 501 and power transmission shaft 503.Connected using screw thread
The purpose for connecing is to realize being detachably connected and simplify installation steps, so as to improve assembly and disassembly efficiency.
Choked flow baffle plate 401 is installed corresponding with 502 position of water cap inlet opening on the inside of universal drive shaft assembly shell 402.Resistance
Stream baffle plate 401 has Anti-erosion wear protection coating with 502 contacts area of water cap inlet opening, it is possible to increase choked flow baffle plate 401
Working life.
During work, the mud as drilling fluid is exported by drilling assistance slush pump, these mud flow through by-passing valve and enter
Enter the motor in motor assembly 3, import and export the rotor rotation to form that certain pressure reduction promotes motor in motor, and by moment of torsion and rotating speed
Drill bit is passed to by universal drive shaft and power transmission shaft 503.Mud flows through motor assembly 3 and universal axle assembly 4 passes through water cap inlet opening
502 enter into.Why it is because as drilling fluid from mud
The characteristics of mud has suitable for hole wall unstable formations such as loose, cranny development, easy collapsing and breaking, water-swellable peelings.
When each water cap inlet opening 502 is turned at choked flow baffle plate 401 can it is covered live, now water cap 501 is always entered
Liquid level product can diminish.The feed liquor area of water cap 501 can periodically be changed using choked flow baffle plate 401, motor pressure drop and stream is made
3 drilling well flow velocity of Jing motor assemblies changes, and then changes torsion and rotating speed that motor assembly 3 is produced.Utilize in drilling process
This torsion for having frequency and rotating speed change enables motor to produce lasting torsion and pass with the vibrations of frequency low-amplitude torsional pulse
Pass drill bit.
Above embodiments of the invention are described in detail, but the content have been only presently preferred embodiments of the present invention,
It is not to be regarded as limiting practical range of the invention.All impartial changes made according to the scope of the invention and improvement etc., all should
Still belong within this patent covering scope.
Claims (5)
1. a kind of drilling well helicoid hydraulic motor that spins, including the by-pass valve assembly (1), anti-lost assembly (2) being from top to bottom sequentially connected,
Motor assembly (3), universal axle assembly (4) and driving-shaft assembly (5), it is characterised in that：The universal axle assembly (4) is including universal
Axle assembly housing (402) and the universal drive shaft arranged positioned at the universal drive shaft assembly shell (402) inside coaxial line, it is described
Driving-shaft assembly (5) includes water cap (501) and power transmission shaft (503), the universal drive shaft, the water cap (501) and the power transmission shaft
(503) pass sequentially through screwed connection to fix；
Water cap (501) center is provided with main infusion hole, and water cap (501) side is provided with multiple rounded arrays and is uniformly distributed
And the water cap inlet opening (502) connected with the main infusion hole, circular array that the water cap inlet opening (502) is constituted, institute
State main inlet opening to arrange with the water cap (501) coaxial line, power transmission shaft (503) center offers and the main infusion hole
The liquid supplying passage that lower end is connected；During work circulation flushing medium drilling fluid by the by-pass valve assembly (1) into rear stream
Motor assembly described in Jing (3) and the universal axle assembly (4) to enter into the liquid by the water cap inlet opening (502) defeated
Passage is sent to be reached in the bit port of drilling tool again；
Choked flow baffle plate (401), the choked flow baffle plate (401) and the water are installed on the inside of the universal drive shaft assembly shell (402)
The external port of cap inlet opening (502) is located at same level height, when the water cap inlet opening (502) turns to the choked flow baffle plate
(401) can be covered in by the choked flow baffle plate (401) during place, make total feed liquor area of the water cap (501) diminish.
2. the drilling well helicoid hydraulic motor that spins according to claim 1, it is characterised in that：The water cap inlet opening (502)
Quantity is four；Choked flow baffle plate (401) width is more than the aperture of the water cap inlet opening (502) and is less than two times of apertures.
3. the drilling well helicoid hydraulic motor that spins according to claim 1, it is characterised in that：The side of the water cap (501) is
Cylindric, the choked flow baffle plate (401) is one block of steel plate with radian, cambered surface and the water on the inside of the choked flow baffle plate (401)
Cap (501) outer ledge is brought into close contact.
4. the drilling well helicoid hydraulic motor that spins according to claim 1, it is characterised in that：Water cap inlet opening (502) edge
The main infusion hole central axis is inclined upwardly setting, the angle between the main infusion hole and the water cap inlet opening (502)
For 40-60 °.
5. the drilling well helicoid hydraulic motor that spins according to any one in claim 1-4, it is characterised in that：The choked flow gear
The protective coating that Anti-erosion weares and teares is scribbled on plate (401) and the contact surface of the water cap inlet opening (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058371.0A CN106522829A (en) | 2016-11-27 | 2016-11-27 | Churn screw drill for drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058371.0A CN106522829A (en) | 2016-11-27 | 2016-11-27 | Churn screw drill for drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106522829A true CN106522829A (en) | 2017-03-22 |
Family
ID=58357117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611058371.0A Pending CN106522829A (en) | 2016-11-27 | 2016-11-27 | Churn screw drill for drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106522829A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894756A (en) * | 2017-04-13 | 2017-06-27 | 西南石油大学 | A kind of hydraulic blow helicoid hydraulic motor |
| CN106948753A (en) * | 2017-05-08 | 2017-07-14 | 西南石油大学 | A kind of pulsed drilling fluid hammer |
| CN107246238A (en) * | 2017-08-01 | 2017-10-13 | 西南石油大学 | A kind of integration impact mud motor |
| CN110374495A (en) * | 2019-08-26 | 2019-10-25 | 山东陆海石油技术股份有限公司 | A kind of high frequency circumferential direction impact type spiral drilling rig structure |
| CN111577120A (en) * | 2020-04-29 | 2020-08-25 | 北京工业大学 | Torsional impact screw drill |
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|---|---|---|---|---|
| CN202745686U (en) * | 2012-08-16 | 2013-02-20 | 熊继有 | Impact screw drilling tool |
| CN103883246A (en) * | 2014-03-31 | 2014-06-25 | 青岛金江源工贸有限公司 | Efficient positive displacement motor drill under well |
| CN104822894A (en) * | 2012-11-30 | 2015-08-05 | 国民油井华高有限公司 | Downhole pulse generating device for through-bore operations |
| US20150259983A1 (en) * | 2010-07-23 | 2015-09-17 | Baker Hughes Incorporated | Components and motors for downhole tools and methods of applying hardfacing to surfaces thereof |
| WO2016041049A1 (en) * | 2014-09-19 | 2016-03-24 | Anderson, Charles Abernethy | Apparatus and method for creating tunable pressure pulse |
| US9322217B1 (en) * | 2015-02-11 | 2016-04-26 | Danny T. Williams | Downhole adjustable mud motor |
| US20160245022A1 (en) * | 2015-02-25 | 2016-08-25 | Axon Ep, Inc. | Power section and transmission of a downhole drilling motor |
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2016
- 2016-11-27 CN CN201611058371.0A patent/CN106522829A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150259983A1 (en) * | 2010-07-23 | 2015-09-17 | Baker Hughes Incorporated | Components and motors for downhole tools and methods of applying hardfacing to surfaces thereof |
| CN202745686U (en) * | 2012-08-16 | 2013-02-20 | 熊继有 | Impact screw drilling tool |
| CN104822894A (en) * | 2012-11-30 | 2015-08-05 | 国民油井华高有限公司 | Downhole pulse generating device for through-bore operations |
| CN103883246A (en) * | 2014-03-31 | 2014-06-25 | 青岛金江源工贸有限公司 | Efficient positive displacement motor drill under well |
| WO2016041049A1 (en) * | 2014-09-19 | 2016-03-24 | Anderson, Charles Abernethy | Apparatus and method for creating tunable pressure pulse |
| US9322217B1 (en) * | 2015-02-11 | 2016-04-26 | Danny T. Williams | Downhole adjustable mud motor |
| US20160245022A1 (en) * | 2015-02-25 | 2016-08-25 | Axon Ep, Inc. | Power section and transmission of a downhole drilling motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894756A (en) * | 2017-04-13 | 2017-06-27 | 西南石油大学 | A kind of hydraulic blow helicoid hydraulic motor |
| CN106948753A (en) * | 2017-05-08 | 2017-07-14 | 西南石油大学 | A kind of pulsed drilling fluid hammer |
| CN107246238A (en) * | 2017-08-01 | 2017-10-13 | 西南石油大学 | A kind of integration impact mud motor |
| CN107246238B (en) * | 2017-08-01 | 2021-04-27 | 西南石油大学 | Integrated impact downhole power drilling tool |
| CN110374495A (en) * | 2019-08-26 | 2019-10-25 | 山东陆海石油技术股份有限公司 | A kind of high frequency circumferential direction impact type spiral drilling rig structure |
| CN111577120A (en) * | 2020-04-29 | 2020-08-25 | 北京工业大学 | Torsional impact screw drill |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
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