CN109555471B - Rotary impact type torsion impact generating device and working method thereof - Google Patents
Rotary impact type torsion impact generating device and working method thereof Download PDFInfo
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- CN109555471B CN109555471B CN201811391243.7A CN201811391243A CN109555471B CN 109555471 B CN109555471 B CN 109555471B CN 201811391243 A CN201811391243 A CN 201811391243A CN 109555471 B CN109555471 B CN 109555471B
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- 238000005553 drilling Methods 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000009527 percussion Methods 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 15
- 239000011435 rock Substances 0.000 claims description 10
- 230000003116 impacting Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000737 periodic Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000002829 reduced Effects 0.000 description 4
- 239000007790 solid phase Substances 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 2
- 230000003628 erosive Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002633 protecting Effects 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000670 limiting Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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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
- 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
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/002—Down-hole drilling fluid separation systems
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
Abstract
The invention discloses a rotary percussion type torsion impact generating device and a working method thereof, which solve the problems of lower impact frequency, smaller impact force, complex structure and more easily damaged parts in the prior art, and have the effects of improving single impact force, improving energy utilization efficiency, greatly reducing adverse effects on normal drilling operation while improving stability; the technical scheme is as follows: the device comprises a diversion desanding assembly for preliminary diversion desanding, a turbine motor power assembly for providing rotary power for a rotating shaft, and an impact assembly for providing torsional impact, wherein the impact assembly is arranged at the tail end of a transmission shaft and comprises an impact hammer body capable of rotating along with the transmission shaft and an anvil block matched with the impact hammer body; the impact ram passes through a periodic impact anvil to generate high frequency torsional impacts.
Description
Technical Field
The invention relates to the field of petroleum drilling auxiliary rock breaking tools, in particular to a rotary percussion type torsion impact generating device and a working method thereof.
Background
In the drilling process of high-abrasiveness stratum and soft-hard staggered stratum, the problems that the drill bit has frequent stick-slip vibration, low mechanical drilling speed, easy damage of the drill bit and poor borehole quality are the main technical problems in the prior art, the root of the problem is that the shearing force of the cutting drill bit is not enough to break rock, so that torque is accumulated in a drill string, and when the torque transmitted by the drill bit reaches the breaking strength of the rock, the energy in the drill string is released instantaneously, so that the drill bit vibrates violently, and stick-slip is generated. To this end, the skilled artisan is beginning to explore a method for inhibiting stick-slip vibration, protecting the drilling tool, and improving rate of penetration and borehole quality in difficult formations. The existing research shows that the use of the torsional impact tool can greatly reduce stick-slip vibration, protect a drilling tool and simultaneously improve the mechanical drilling speed.
The current torque impact tool also has the following problems:
(1) the existing tool has a complex structure, more easily damaged parts and shorter effective working time in a severe underground working environment;
(2) the main motion energy of the existing tool comes from the drilling fluid, and the lower energy utilization efficiency of the existing tool greatly improves the pressure drop of the drilling fluid, thereby bringing negative effects to normal drilling construction;
(3) the existing tool has lower impact frequency and smaller impact force, and is difficult to achieve ideal working efficiency.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a rotary percussion type torsion impact generating device and a working method thereof, and the rotary percussion type torsion impact generating device has the effects of improving single impact force, improving energy utilization efficiency, improving stability and greatly reducing adverse effects on normal drilling operation.
The invention adopts the following technical scheme:
a rotary impact type torsional impact generating device comprising:
the diversion desanding component is used for preliminarily shunting and desanding;
a turbine motor power assembly providing rotational power to the rotating shaft;
the impact assembly is arranged at the tail end of the transmission shaft and comprises an impact hammer body capable of rotating along with the transmission shaft and an anvil block matched with the impact hammer body; the impact ram passes through a periodic impact anvil to generate high frequency torsional impacts.
Further, the anvil is connected to the drill bit socket by a locating sleeve for transmitting torsional impacts to the drill bit socket to assist in breaking rock.
Furthermore, the impact hammer body is a double-hammer-head hammer body, and the hammer bodies are symmetrically distributed on two sides of the transmission shaft; an anvil block is arranged outside the hammer body.
Further, the anvil is an annular anvil, and the inside of the annular anvil is provided with a bulge for bearing the impact of a hammer head.
Further, the annular anvil block is connected with the positioning sleeve through a positioning pin;
the two ends of the outer side of the annular anvil block are respectively provided with a positioning hole and a positioning groove, the two sides of the inner part of the positioning sleeve are provided with positioning holes, and the movement of the annular anvil block is restrained by the positioning pins.
Further, the turbine motor power assembly comprises a multi-stage turbine stator and a turbine rotor, the turbine stator and the turbine rotor are alternately arranged, and the turbine rotor is installed on the circumferential outer side of the transmission shaft.
Furthermore, the transmission shaft is arranged in the shell through a positioning bearing, one end of the shell is in threaded connection with the adapter, and the other end of the shell is provided with the drill sleeve;
the diversion desanding assembly is arranged on the inner side of the adapter and one end of the diversion desanding assembly is in contact with the transmission shaft.
Further, the drill sleeve is connected with the shell through a spline, a key groove matched with the spline is formed in the inner side of the shell, and a gap with a set angle is formed between the spline and the key groove.
Furthermore, the diversion desanding component is a diversion filter tube with a plurality of square side runners arranged on the side surface.
The working method of the rotary impact type torsion impact generating device comprises the following steps:
drilling fluid enters the diversion desanding assembly from the adapter for primary desanding and shunting, and the shunted drilling fluid enters the vortex rotor through the first-stage vortex stator to push the vortex rotor to rotate;
the vortex rotor drives the transmission shaft to rotate, the double-hammer-head hammer body rotates along with the transmission shaft, and when the double-hammer-head hammer body is contacted with the bulge of the annular anvil block, impact is generated on the annular anvil block, namely an impact motion stage;
a return movement stage in which the double-hammer body pushes the annular anvil to the outside to continue rotating, and the annular anvil is returned to impact again when the double-hammer body moves to be in contact with the annular anvil again;
high-frequency torsional impact generated by periodically impacting the annular anvil by the double-hammer-head hammer body is transmitted to the drill bit sleeve through the positioning sleeve, and the drill bit sleeve transmits the torsional impact to the drill bit to assist in rock breaking.
Compared with the prior art, the invention has the beneficial effects that:
(1) the diversion desanding assembly can conduct preliminary diversion desanding on drilling fluid, reduces the content of solid-phase particles of the drilling fluid flowing through the turbine motor power assembly, reduces erosion of the solid-phase particles on internal parts of the device, prolongs the service life, simultaneously guarantees reasonable diversion and improves the energy utilization efficiency;
(2) the turbine motor power assembly comprises the turbine stator and the turbine rotor which are alternately arranged, and can ensure the efficient operation of the device; the profile of the turbine blade is optimized by adopting a quintic polynomial method, so that the turbine motor is guaranteed to have better working performance, and the energy utilization efficiency is further improved;
(3) the impact assembly can provide larger instantaneous torsional impact force for drilling and improve the rock breaking capacity of the PDC drill bit; the impact assembly comprises a double-hammer-head hammer body, single impact force of the device is improved, stability of tools is improved, unstable vibration generated by a drill rod in the working process is reduced, and adverse effects of the device on normal drilling operation are greatly reduced while stability is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view of the external structure of the present invention;
FIG. 3 is a view A-A of FIG. 1 of the present invention;
FIG. 4 is a view B-B of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic view of a convertible joint structure of the present invention;
FIG. 6 is a schematic view of the construction of the diversion desanding assembly of the present invention;
FIG. 7 is a schematic view of a turbine blade cascade configuration of the present invention;
FIG. 8 is a schematic view of the impingement assembly of the present invention;
FIGS. 9-10 are schematic views of the dual hammer head hammer body structure of the present invention;
11-13 are schematic views of the annular anvil construction of the present invention;
FIGS. 14-15 are schematic views of the structure of the positioning sleeve of the present invention;
FIG. 16 is a schematic view of the housing structure of the present invention;
FIG. 17 is a schematic view of a drill sleeve configuration of the present invention;
FIG. 18 is a schematic view of the motion of the impact assembly of the present invention;
FIG. 19 is a bucket profile optimization diagram of the present invention;
the device comprises a 1-conversion joint, a 2-diversion desanding component, a 3-shell, a 4-turbine stator, a 5-turbine rotor, a 6-transmission shaft, a 7-positioning bearing, an 8-double-hammer-head hammer body, a 9-annular anvil block, a 10-positioning sleeve, a 11-positioning pin, a 12-drill sleeve, a 13-gap, a 14-first cylindrical section, a 15-second cylindrical section, a 16-square side runner, a 17-hammer head, an 18-positioning hole, a 19-bulge and a 20-positioning groove.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, the prior art has the disadvantages of low impact frequency, small impact force, complex structure and more wearing parts, and the application provides a spinning torque impact generating device and a working method thereof in order to solve the technical problems.
In an exemplary embodiment of the present application, as shown in fig. 1-19, a rotary momentum torque impact generating device is provided that includes a housing 3, an adapter 1, a flow directing and grit removing assembly 2, a drive shaft 6, a turbine motor power assembly, an impact assembly, and a bit sleeve 12.
One end of the shell 3 is in threaded connection with the adapter 1, and the other end of the shell 3 is connected with the drill bit sleeve 12 through a spline; because the drill sleeve 12 is mainly used for connecting a drill and transmitting torsional impact generated by the impact assembly to the drill, the torsional impact energy generated by the impact assembly is very valuable, and the drill sleeve 12 is required to transmit as much energy as possible, the influence of the structure of the drill sleeve 12 on the energy transmission efficiency is fully considered, and the energy loss is reduced on the premise of ensuring the strength.
This application forms clearance fit through the spline between drill bit sleeve 12 and the casing 3, reserves sufficient torsion impact motion space for drill bit sleeve 12 to reduce energy loss.
In some embodiments, the end of the drill sleeve 12 is provided with four splines, the splines are 52 °, the housing 3 is fitted with splines 38 °, and a 14 ° gap 13 is formed.
The transmission shaft 6 penetrates through a positioning bearing 7 arranged inside the shell 3, and a diversion coarse sand component 2 is arranged between one end of the transmission shaft 6 and the adapter 1.
The diversion coarse sand component 2 is used for preliminary sand removal and diversion, reduces the content of solid-phase particles of drilling fluid flowing through the turbine motor power component, reduces the erosion of the solid-phase particles to internal parts of the device, prolongs the service life, simultaneously ensures reasonable diversion and improves the energy utilization efficiency.
The diversion coarse sand component 2 is a diversion filter tube with a plurality of square side runners 16 arranged on the side surface, as shown in fig. 6; the diversion coarse sand component 2 comprises a first cylindrical section 14 and a second cylindrical section 15 which are communicated with each other, wherein the second cylindrical section 15 is sleeved at one end of the first cylindrical section 14, and the outer diameter of the second cylindrical section 15 is larger than that of the first cylindrical section 14.
A plurality of square side runners 16 are formed in the side surface of the first cylindrical section 14 and used for circulating drilling fluid; the surface of the second cylindrical section 14 is provided with a through arc-shaped flow passage.
In some embodiments, the lateral sides of the guided grit module 2 are provided with eight square side channels 16.
The turbine motor power assembly comprises a multi-stage turbine stator 4 and a turbine rotor 5, the turbine stator 4 and the turbine rotor 5 are alternately arranged, the turbine rotor 5 is installed on the circumferential outer side of a transmission shaft 6, and the turbine stator 4 is fixed with the inner side of a shell 3.
In some embodiments, the turbine motor power assembly employs a three stage turbine to provide power.
The design optimization of the turbine blade profile is performed by adopting a fifth-order polynomial method, as shown in fig. 7 and 19, the turbine motor power assembly can be guaranteed to have better working performance, and the energy utilization efficiency is further improved.
The working performance of the turbine blade profile curve is greatly different from that of the turbine blade profile curve, so that the working performance of a torsional impact tool can be obviously improved through reasonable turbine blade cascade design, the shape of the blade profile is researched from the relationship between the blade profile and the geometry, and one of the selection principles of the blade profile is that the blade profile has continuous curvature.
The quintic polynomial is used as a molded line equation of the pressure surface and the suction surface of the blade, the blade modeling can be well completed by combining computer aided design, and the specific design condition of the turbine blade profile can be checked by utilizing numerical simulation.
A polynomial fitting curve (polynomial fitting curve) is to select a proper function to fit the data points according to the existing data points, and the relationship between the data is expressed by means of a fitted curve equation. Blade profile section construction has two main types of data: the circular arc straight line data and the discrete point data are more and more extensive in description of the blade profile section by using the discrete points.
The application takes the form ofFunction polynomial of (2) is curved to the section of the blade profileThe line is fitted and described, which has the following advantages:
(1) because the form of the high-order polynomial is relatively simple, the coefficient value related to the shape in the high-order polynomial is changed, different curves with rich defined shapes can be obtained, and the high-order polynomial has good expansibility and automatic generation capability;
(2) because the high-order polynomial can be micro, the curve is smooth and continuous, the flow velocity distribution of the blade profile surface can be improved, and the friction loss is reduced;
(3) each derivative value of the high-order polynomial has definite meaning, and the molded line is flexibly and efficiently adjusted and is simple to calculate; with a polynomial of n-5-7, the curvature variation law is satisfied for the turbodrill blade.
In consideration of calculation simplification as much as possible in the design process, the quintic polynomial is adopted for profile construction of the blade, the front edge and the rear edge are connected by arcs, and a second-order continuous derivative is arranged at the connecting point, so that the obtained blade profile does not have redundant inflection points, and the design requirement is met.
Pressure surface y with bladespAnd suction surface ysThe profile equations are respectively:
yp＝a0+a1x+a2x2+a3x3+a4x4+a5x5(1)
ys＝b0+b1x+b2x2+b3x3+b4x4+b5x5(2)
setting a pressure surface coordinate: first point (x)p1，yp1) Last point (x)pn，ypn)；
Suction surface coordinates: first point (x)s1，ys1) Last point (x)sn，ysn)；
Solving first derivative y 'of coordinates'p1、y′pn、y′s1、y′snAnd the second derivative y ″)p1、y″pn、y″s1、y″sn
And (3) substituting the parameters into the formula (1) and the formula (2), solving by MATLAB software, and determining the pressure surface and suction surface profile line equations of the blade.
And then generating the obtained blade profile according to the profile equation, and stretching to construct the blade.
The final cascade parameters obtained were:
then, the internal main flow field is analyzed through ANSYS software, and the speed field and the pressure cloud chart of the turbine blade are used for analyzing, so that the reasonable design of the turbine blade is proved, and finally the arranged turbine blade cascade can fully utilize the energy of the drilling fluid to meet the design requirement.
The impact assembly is arranged on the circumferential outer side of the transmission shaft 6 and is arranged close to one end of the drill bit sleeve 12, and comprises an impact hammer body, an anvil block, a positioning pin 11 and a positioning sleeve 10, wherein the impact hammer body is arranged on one side of the transmission shaft 6, the anvil block is arranged on the circumferential outer side of the impact hammer body, and the anvil block is connected with the positioning sleeve 10 through the positioning pin 11.
The impact hammer body is a double-hammer-head hammer body 8, the structure of the double-hammer-head hammer body 8 is shown in figures 9-10 and comprises a hammer body and two hammers 17, the two hammers 17 are distributed on two sides of the hammer body, and the two hammers 17 are arranged at a certain distance along the axial direction of the hammer body.
The design of the double-hammer head hammer body 8 improves single impact force, improves the stability of the tool, reduces unstable vibration generated to a drill rod in the working process, and greatly reduces adverse effects on normal drilling operation while improving the stability.
The anvil is an annular anvil 9, and the inside of the annular anvil 9 is provided with a bulge 19 for bearing the impact of a hammer.
The two ends of the outer side of the annular anvil block 9 are respectively provided with a positioning hole 18 and a positioning groove 20, the two sides of the inner part of the positioning sleeve 10 are provided with positioning holes, a positioning pin 11 is arranged in the positioning hole 18 at one side of the annular anvil block 9 and the positioning hole at the position corresponding to the positioning sleeve, the positioning groove 20 at the other side of the annular anvil block 9 and the positioning hole at the position corresponding to the positioning sleeve are also provided with a positioning pin 11, and the movement of the annular anvil block 9.
The working process of the torsion impact generating device is as follows:
during operation, drilling fluid flows through the adapter 1 and enters the diversion desanding assembly 2, and the diversion desanding assembly 2 conducts preliminary desanding and shunting on the drilling fluid.
The drilling fluid after the shunting sand removal enters the turbine rotor 5 after entering the first-stage turbine stator 4, the drilling fluid pushes the turbine rotor 5 to rotate, the turbine rotor 5 drives the transmission shaft 6 to rotate, the rotation shaft 6 transmits energy to the double-hammer-head hammer body 8, the double-hammer-head hammer body 8 rotates fast along with the transmission shaft 6, and when the double-hammer-head hammer body 8 contacts with the protrusions of the upper annular anvil block 9 and the lower annular anvil block 9, impact is generated on the annular anvil blocks 9, namely, an impact motion stage is realized.
At the same time, the double-hammer-head hammer body 8 pushes the annular anvil 9 to the outside so as to continue rotating, and when the double-hammer-head hammer body 8 moves to the other side and contacts the annular anvil 9 again, the annular anvil 9 is reset so as to impact again, namely, a reset movement stage.
The double-hammer-head body 8 periodically impacts the annular anvil 9 to generate high-frequency torsional impact, the annular anvil 9 is restrained inside the positioning sleeve 10 through the positioning pin 11, the positioning pin 11 transmits torsional impact generated by the double-hammer-head body 8 impacting the annular anvil 9 to the positioning sleeve 10, the positioning sleeve 10 is connected with the drill bit sleeve 12, the positioning sleeve 10 transmits the torsional impact to the drill bit sleeve 12, and the drill bit sleeve 12 transmits the torsional impact to a drill bit to assist in rock breaking.
This application work efficiency is good, ability utilization efficiency is high, long service life, provides powerful support for the high-efficient broken rock of PDC, and the use of this technique can show reduction drilling cost.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A rotary percussion type torque impact generating device, comprising:
the diversion desanding component is used for preliminarily shunting and desanding;
a turbine motor power assembly providing rotational power to the rotating shaft;
the impact assembly is arranged at the tail end of the transmission shaft and comprises an impact hammer body capable of rotating along with the transmission shaft and an anvil block matched with the impact hammer body; the impact hammer body passes through the impact anvil periodically to generate high-frequency torsional impact;
the anvil block is connected with the drill bit sleeve through the positioning sleeve, and the positioning sleeve is used for transmitting torsional impact to the drill bit sleeve to assist in rock breaking;
the impact hammer body is a double-hammer-head hammer body, and the anvil block is an annular anvil block; the annular anvil is internally provided with a bulge for bearing hammer impact, the bulge is used for generating impact on the annular anvil when the double-hammer body is contacted with the bulge of the annular anvil, namely an impact motion phase, the double-hammer body pushes the annular anvil to the outside so as to continue rotating, and when the double-hammer body moves to the other side and is contacted with the annular anvil again, the annular anvil is reset so as to impact again, namely a reset motion phase.
2. The rotary percussion type torsional impact generating device according to claim 1, wherein the hammer bodies are symmetrically distributed on both sides of the transmission shaft; an anvil block is arranged outside the hammer body.
3. A rotary impact type torsional impact generating device according to claim 2, wherein the annular anvil is connected to the positioning sleeve by a positioning pin;
the two ends of the outer side of the annular anvil block are respectively provided with a positioning hole and a positioning groove, the two sides of the inner part of the positioning sleeve are provided with positioning holes, and the movement of the annular anvil block is restrained by the positioning pins.
4. A rotary percussion type torque impact generating device according to claim 1, wherein the turbine motor power assembly includes a multi-stage turbine stator and a turbine rotor, and the turbine stator and the turbine rotor are alternately arranged, and the turbine rotor is mounted on the circumferential outer side of the transmission shaft.
5. The rotary percussion type torsional impact generating device according to claim 1, wherein the transmission shaft is mounted inside a housing through a positioning bearing, one end of the housing is in threaded connection with the adapter, and the other end of the housing is provided with a drill sleeve;
the diversion desanding assembly is arranged on the inner side of the adapter and one end of the diversion desanding assembly is in contact with the transmission shaft.
6. The percussion torque impact generator of claim 5, wherein the drill sleeve is connected to the housing by splines, and the housing has key slots on its inside for engaging with the splines, the splines forming a predetermined angular gap with the key slots.
7. The rotary percussion torque impact generator according to claim 1, wherein the diversion desanding assembly is a diversion filter tube with a plurality of square side flow channels on its side.
8. The working method of the rotary percussion type torsion impact generating device according to any one of claims 1 to 7, wherein the drilling fluid enters the diversion desanding assembly from the adapter for primary desanding and shunting, and the shunted drilling fluid enters the turbine rotor through the first stage turbine stator to push the turbine rotor to rotate;
the turbine rotor drives the transmission shaft to rotate, the double-hammer-head hammer body rotates along with the transmission shaft, and when the double-hammer-head hammer body is contacted with the bulge of the annular anvil block, impact is generated on the annular anvil block, namely an impact motion stage;
a return movement stage in which the double-hammer body pushes the annular anvil to the outside to continue rotating, and the annular anvil is returned to impact again when the double-hammer body moves to be in contact with the annular anvil again;
high-frequency torsional impact generated by periodically impacting the annular anvil by the double-hammer-head hammer body is transmitted to the drill bit sleeve through the positioning sleeve, and the drill bit sleeve transmits the torsional impact to the drill bit to assist in rock breaking.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391243.7A CN109555471B (en) | 2018-11-21 | 2018-11-21 | Rotary impact type torsion impact generating device and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811391243.7A CN109555471B (en) | 2018-11-21 | 2018-11-21 | Rotary impact type torsion impact generating device and working method thereof |
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| CN109555471B true CN109555471B (en) | 2020-10-27 |
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| US6742609B2 (en) * | 2001-05-11 | 2004-06-01 | United Diamond Ltd. | Rotational impact drill assembly |
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| CN203701951U (en) * | 2014-01-22 | 2014-07-09 | 中国石油大学(华东) | Torsion impact generator |
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