CN103850651B - Hydrocyclone leading device - Google Patents
Hydrocyclone leading device Download PDFInfo
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- CN103850651B CN103850651B CN201410117296.5A CN201410117296A CN103850651B CN 103850651 B CN103850651 B CN 103850651B CN 201410117296 A CN201410117296 A CN 201410117296A CN 103850651 B CN103850651 B CN 103850651B
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- 238000005553 drilling Methods 0.000 claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 21
- 239000010432 diamond Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 23
- 239000011435 rock Substances 0.000 claims description 5
- 238000009987 spinning Methods 0.000 claims description 4
- 239000002243 precursor Substances 0.000 claims 3
- 230000001970 hydrokinetic effect Effects 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052796 boron Inorganic materials 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 6
- 230000036346 tooth eruption Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The invention discloses a hydrocyclone leading device used in a drilling process, and provides a novel drilling method. The hydrocyclone leading device consists of a leading head, an impact sleeve, a fixed power ring, an impact revolving wheel and a petal ring. The leading head is provided with PDBC (polycrystalline diamond boron compact) teeth and a nozzle, wherein each tooth is provided with a 20DEG to 25DEG tooth anterior angle, so that the teeth can be better inserted into the stratum. An upper impact cavity and a lower impact cavity are arranged inside the hydrocyclone leading device, a continuous power is produced by drilling liquid through the fixed power ring, an alternating-variable high-frequency circumferential impact force is generated by the drilling liquid through the impact revolving wheel, a high-frequency axial impact force is generated in the upper and lower impact cavities, and the insertion force of the teeth can be increased through the circumferential and axial high-frequency impact force. The hydrocyclone leading device is applicable to the homogenous hard stratum. By utilizing the hydrocyclone leading device, the speed can be improved by 3 to 5 times compared with the conventional drilling tool, the preliminary damage of the teeth can be effectively avoided, the drilling times can be reduced, the well construction period can be shortened, and the drilling cost can be reduced.
Description
Technical Field
The present invention relates generally to the field of oil and gas drilling tools. In particular, it relates to a new drilling tool with boronized diamond compact (PDBC) hydrodynamic rotary leaders and a new drilling method.
Background
In the drilling process of oil and gas, a common PDC (Polycrystalline Diamond Compact) drill bit is widely used at present.
PDC bits are an important technical achievement in the drilling industry, and are a technological breakthrough after roller cone bits in the field of oil bits. The well drilling practice shows that the PDC drill bit works stably, the drilling speed is high, the service life is long, the drill bit accidents are few, the well drilling cost can be greatly reduced, the overall economic benefit of well drilling is improved, and the PDC drill bit is favored in the well drilling field. The PDC drill bit is a high-efficiency rock breaking tool with high drilling speed, long service life and good working stability, but with the advance of petroleum exploration and development to deep strata, hard strata and complex strata are increased, and the complexity of a drilling tool structure is increased. The performance of conventional drilling tools and drilling methods cannot meet specific service requirements.
First, for harder or extremely hard formations, conventional PDC bits have disadvantages in that: the diamond compact of drill bit cutting edge is not good at the working effect in the extremely hard stratum, and the performance can not satisfy the operation requirement, and drilling speed is slow, and the easy early damage of diamond tooth this moment can accelerate the destruction and the inefficacy of PDC drill bit, leads to drill bit life to be short.
Secondly, various rotary percussion or rotary percussion tools used in the drilling operation can only generate axial impact force, so that the phenomena of stick-slip and drill sticking of a drill bit cannot be solved, and the service life of the drill bit can be shortened on the contrary to aggravated unstable drilling. Wherein, the torsional impact generator (patent number: US 6742609B 2) in the prior art adopts a turbine to drive an impact hammer to generate high-frequency torsional impact, and a torsional impact drilling tool (patent application number: 200910058083.9) of the oil university in the southwest utilizes a screw drill to drive the impact hammer, and the two drilling tools have more wearing parts and large consumed pressure drop.
Disclosure of Invention
The invention overcomes the defects in the prior art, provides a hydraulic rotary front guider used in the drilling process and provides a novel drilling method.
In order to solve the technical problems, the invention adopts the following scheme:
the liquid rotation front guider comprises a fixed power ring, an impact rotary wheel, a petal ring, an impact sleeve and a front guide head which are connected in sequence:
the leading head has a plurality of blades with a plurality of teeth thereon, a nozzle in front of each blade,
the impact sleeve is fixedly connected with the fixedly connected power ring and the front guide head,
the upper and lower shafts of the impact rotary wheel are respectively positioned in the lower central hole of the fixed power ring and the upper central hole of the petal ring,
the stationary power ring may generate continuous power,
the impact rotary wheel can generate alternating high-frequency circumferential impact force,
the hydraulic rotary front guider is internally provided with an upper impact cavity and a lower impact cavity, and both the upper impact cavity and the lower impact cavity can generate downward axial impact force.
Further, the material of tooth is boronized diamond compact.
Preferably, the crown shape curve model of the leading head is as follows:
the parameters are the parabolic parameters of the outer cone of the liquid rotation front guider,；
wherein,
-is the nominal outer radius of the liquid cyclone forerunner;
the crown radius (the circle center of the arc and the radius of the parabola axis);
-is the crown arc radius;
-the inner cone depth of the hydrodynamic front guide;
-is the outer cone height;
-the slope of the inner cone straight line.
Preferably, the teeth have a tooth rake angle of 20 to 25 degrees.
Preferably, the number of blades on the leading head is 4 to 9.
Preferably, the number of nozzles in front of each blade is 1 or 2.
Preferably, the teeth have a length of 13.44 mm.
Preferably, the upper impingement cavity has a diameter D1 of 60 to 120 millimeters and a height H1 of 0.35D1 to 0.4D 1.
Preferably, the lower impingement cavity has a diameter D2 of 50 to 95 millimeters and a height H2 of 0.7D2 to 0.9D 2.
A method of drilling a well using a hydraulic pilot comprising the steps of:
connecting the upper part of the hydraulic front guider to the upper drilling tool, enabling the hydraulic front guider to rotate along with the upper drilling tool,
the drilling fluid flows into the fixed power ring to generate continuous power,
the drilling fluid flows through the impact rotary wheel to generate alternating high-frequency circumferential impact force,
the drilling fluid flows through the annulus of the valve,
the drilling fluid enters the upper impact cavity, a first downward axial impact force is generated in the upper impact cavity,
the drilling fluid flows through the main central hole of the leading head,
the drilling fluid enters the lower impact cavity to generate a second downward axial impact force in the lower impact cavity,
the first impact force, the second impact force and the alternating high-frequency circumferential impact force are transmitted to the teeth through the front guide head and act on the rock at the bottom of the well.
The invention has the beneficial effects that:
firstly, drilling fluid generates continuous power through a fixed power ring, alternating power is generated through an impact rotary wheel, high-frequency axial impact is generated through an upper impact cavity and a lower impact cavity under the action of the drilling fluid force, the high-frequency axial impact improves the cleaning effect on one hand, and the biting force of teeth is increased on the other hand. The hydraulic rotary front guider can skillfully convert the fluid energy of partial drilling fluid into high-frequency, circumferential-torsional and impact-type well bottom mechanical rock breaking power and directly acts on the hydraulic rotary front guider, the drilling tool capable of generating high-frequency small-amplitude torsional impact can enable the hydraulic rotary front guider to stably drill, other drilling tools such as a turbine or a screw rod and the like do not exist in the drilling tool, the number of easily damaged parts is small, the consumed pressure drop is small, and the service life is long.
Secondly, a boronized diamond compact (PDBC) is adopted for cutting teeth of the front guide head to replace a conventional Polycrystalline Diamond Compact (PDC), and the boronized diamond compact teeth are more wear-resistant and more impact-resistant than any other teeth; the tooth rake angle of 20-25 degrees determined by repeated experiments is different from the tooth rake angle of other similar products, and the special working mode is more favorable for being eaten into the stratum.
Finally, according to the characteristics of the PDBC liquid rotary front guider, optimized front guider section data, the number of blades, the size of cutting teeth and other liquid rotary front guider parameters are determined through a large number of simulations and experiments, so that drilling is stable, and the direction is easy to control.
The hydraulic rotary front guider belongs to a brand new drilling tool, is provided with a PDBC hydraulic rotary front guider, has low manufacturing cost, high processing efficiency and small processing difficulty, and is particularly suitable for homogeneous extremely hard strata. The novel drilling tool effectively utilizes high-frequency circumferential and axial impact force generated by drilling fluid, and the speed is increased by 3-5 times compared with that of a conventional drilling method.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
fig. 1 is a structural view of a hydrodynamic introducer.
Fig. 2 is a front view of the lead head.
Fig. 3 is a cross-sectional view of the blade.
Fig. 4 is a flow chart of the operation of the liquid rotation leader.
Description of reference numerals:
1. the device comprises a fixed power ring, 2, an impact rotary wheel, 3, a petal ring, 4, an impact sleeve, 5, a front guide head, 6, teeth, 7, a nozzle, 8, an upper impact cavity, 9, a lower impact cavity, 10 and a blade.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments. It should be understood that the preferred embodiments described herein are only for illustrating the technical solutions of the present invention, and are not intended to limit the present invention.
The boronized diamond composite material has been obtained through corresponding research and preparation methods, for example, by taking boron-containing graphite and artificial diamond as raw materials and performing experiments in a thermodynamic stable region of the diamond. The invention does not discuss the preparation method, but researches the technical scheme of using the boronized diamond composite material for the liquid spinning front guider. Research related to the use of boronized diamond composites for the specific design of drill bits or drill heads has not been found to be relevant to the prior art.
Fig. 1 is a structural view of a hydrodynamic introducer. As shown in figure 1, the liquid rotation front guider comprises a fixed power ring 1, an impact rotary wheel 2, a flower valve ring 3, an impact sleeve 4 and a front guide head 5 which are connected in sequence. Wherein, leading head 5 has a plurality of blades 10, there are a plurality of teeth 6 on blades 10, each blade 10 has nozzle 7 in front.
The connection relationship among the above-mentioned parts is:
the impact sleeve 4 is fixedly connected with the fixedly connected power ring 1 and the front guide head 5. The nozzle 7 and the teeth 6 are fixed to the front header 5. The impacting sleeve 4 and the leading head 5 are now screwed together and in operation the relatively motionless annulus 3 is placed over the impacting cavity of the impacting sleeve 4. The fixed power ring 1 and the impact sleeve 4 are connected together through threads, and do not move relatively during operation. The upper and lower shafts of the impact rotary wheel 2 are respectively placed in the lower central hole of the fixed power ring 1 and the upper central hole of the petal ring 3.
The internal power generated by the hydraulic rotary front guider comprises:
the stationary power ring 1 can generate continuous power. The impact rotor 2 can generate alternating high-frequency circumferential impact force. The hydraulic rotary front guider is internally provided with an upper impact cavity 8 and a lower impact cavity 9, and both the upper impact cavity 8 and the lower impact cavity 9 can generate downward axial impact force.
Because the conventional diamond bit has poor working effect in an extremely hard stratum, Polycrystalline Diamond Compact (PDC) teeth are easy to damage in advance. Preferably, the teeth 6 are boronized diamond compact (PDBC) teeth. The PDBC teeth are more wear-resistant and impact-resistant than any other teeth, the performances of the boronized diamond compact are different from those of the diamond compact, and the PDBC teeth are particularly suitable for homogeneous extremely hard strata.
The structure of the liquid rotation front guider is different from that of a common diamond drill bit, and the liquid rotation front guider is provided with an impact rotary wheel 2, an upper impact cavity and a lower impact cavity and can generate alternating high-frequency circumferential and axial impact force.
Preferably, the diameter D1 of the upper impingement cavity 8 is 60 to 120 millimeters, and the height H1 of the upper impingement cavity 8 is 0.35D1 to 0.4D 1.
Preferably, the diameter D2 of the lower impingement cavity 9 is 50 to 95 millimeters, and the height H2 of the lower impingement cavity 9 is 0.7D2 to 0.9D 2.
For the shape design of the crown part of the liquid rotary front guider, a great number of experiments prove that the shape curve model of the crown part of the front guider, which is suitable for the PDBC liquid rotary front guider, is adopted as follows:
the parameters are the parabolic parameters of the outer cone of the liquid rotation front guider,；
wherein,
-is the nominal outer radius of the liquid cyclone forerunner;
the crown radius (the circle center of the arc and the radius of the parabola axis);
-is the crown arc radius;
-the inner cone depth of the hydrodynamic front guide;
-is the outer cone height;
-the slope of the inner cone straight line.
According to the design, a shallow inner cone and a short parabolic crown profile are adopted for an outer cone, the continuous transition of the shoulder profile of the parabolic liquid rotation front guide can eliminate the load of a concentration point, the projection density of the cutting teeth from the nose part of the liquid rotation front guide to the gauge protection part is increased, the protection of the cutting teeth is facilitated, and the capability of the front guide head in penetrating through a drill layer and the capability of reinforcing the gauge protection are increased. The outer cone short parabola can reduce the contact area of the front guide head and the well wall, so that the friction force between the front guide head and the well wall and the swirling of the liquid cyclone front guide device are reduced, and the design also has the advantages of easiness in tooth arrangement and convenience in processing.
Fig. 2 is a front view of the lead head.
In fig. 2, several nozzles 7 of the head 5 are exemplarily indicated, which are numbered: "1 #", "2 #", "3 #", "4 #", "5 #", "6 #", "7 #", and "8 #". The number of the nozzles 7 may be appropriately set as needed.
The leading head 5 employs multiple blades 10, exemplarily labeled in fig. 2: "A", "B", "C", "D", "E", "F". The appropriate tooth arrangement density can be reasonably arranged according to the drilling requirement of a specific stratum. As shown in figure 2, 1-2 nozzles 7 are arranged in front of each blade 10, so that the hydraulic power can be reasonably designed according to needs, the cleaning is sufficient, and the hydraulic cleaning and cooling effects are improved.
Preferably, the liquid rotary front guider can adopt 4-9 blades, the density of teeth is suitable for the drilling requirement of a homogeneous extremely hard stratum at the moment, the cutting teeth on the same blade are ensured not to interfere with each other during installation, and the design of the blades and the distribution of the cutting teeth are favorable for improving the stability of the liquid rotary front guider; the front of each blade is provided with 1-2 nozzles, so that each blade can be cleaned sufficiently.
Fig. 3 is a cross-sectional view of the blade.
The particular tooth rake angle that the blade 10 has and the dimensions of the teeth 6 are shown in fig. 3, in particular:
special tooth front angle: the tooth rake angle of the blade of the conventional PDC drill bit is generally 10-20 degrees. In the embodiment of the invention, the PDBC liquid rotation front guider has different angles due to different material characteristics, the tooth front angle of the tooth 6 is 20-25 degrees, and the angle is determined through experiments and is different from the tooth front angle of a common PDC drill bit. The front angle of the tooth is more beneficial to being eaten into the stratum under the special working mode of homogenizing extremely hard stratum; meanwhile, the rake angle of the teeth can ensure that the wear resistance of the teeth can be best exerted.
For the size of the teeth 6: in the embodiment of the invention, the length of the edge of the tooth 6 is 13.44 mm, other values can be selected, and experiments prove that the appropriate feeding force can be ensured by adopting the 13.44 mm tooth.
In general, the tooth rake angle of 20-25 degrees matched by the 13.44 mm tooth is beneficial to the tooth to be eaten into the stratum and the wear resistance of the tooth is best exerted.
Fig. 4 is a flow chart of the operation of the liquid rotation leader.
As shown in fig. 4, the working process of the liquid rotation leader is as follows:
1) connecting the upper part of the hydraulic front guider to the upper drilling tool, enabling the hydraulic front guider to rotate along with the upper drilling tool,
2) the drilling fluid flows into the fixed power ring 1 to generate continuous power,
3) the drilling fluid flows through the impact rotary wheel 2 to generate alternating high-frequency circumferential impact force,
4) the drilling fluid flows through the annulus 3 of the flower,
5) the drilling fluid enters the upper impact cavity 8, a first downward axial impact force is generated in the upper impact cavity 8,
6) the drilling fluid flows through the main central bore of the leading head 5,
7) the drilling fluid enters the lower impact cavity 9 to generate a second downward axial impact force in the lower impact cavity 9,
8) the first impact force, the second impact force and the alternating high-frequency circumferential impact force are transmitted to the teeth 6 through the front guide head 5 and act on the rock at the bottom of the well.
In conclusion, the hydraulic rotary front guider creatively adopts PDBC teeth with proper performance and has high-frequency impact force in the circumferential direction and the axial direction, so that the working effect in an extremely hard stratum is greatly improved, and the early damage of the teeth is avoided.
The hydraulic rotary front guider can greatly improve the drilling effect of an extremely hard bottom layer, greatly improve the footage and the drilling speed of single well descending, reduce the tripping times, shorten the well construction period and reduce the drilling cost.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, wherein the details which are not described in detail are all within the common general knowledge of the skilled person in the art. The scope of the invention is indicated by the appended claims, and all changes that come within the spirit and scope of the invention, including all equivalents and modifications, are intended to be embraced therein.
Claims (6)
1. The utility model provides a liquid revolves preceding ware, is including fixed power ring (1), impact gyrostat (2), flower valve ring (3), impact cover (4) and leading leader (5) that connect gradually, its characterized in that:
the leading head (5) is provided with a plurality of blades (10), a plurality of teeth (6) are arranged on the blades (10), a nozzle (7) is arranged in front of each blade (10),
the impact sleeve (4) is fixedly connected with the fixed power ring (1) and the front guide head (5),
the upper and lower shafts of the impact rotary wheel (2) are respectively positioned in the lower central hole of the fixed power ring (1) and the upper central hole of the petal ring (3),
the fixed power ring (1) can generate continuous power,
the impact rotary wheel (2) can generate alternating high-frequency circumferential impact force,
the liquid cyclone guider is internally provided with an upper impact cavity (8) and a lower impact cavity (9), the upper impact cavity (8) can generate a first downward axial impact force, and the lower impact cavity (9) can generate a second downward axial impact force;
the teeth (6) are made of boronized diamond compacts;
the crown shape curve model of the leading head is as follows:
p2-the parameters of the parabola of the external cone of the drill bit,
wherein,
r-is the nominal outer radius of the drill bit;
r0the crown radius (the circle center of the arc and the radius of the parabola axis);
r is the radius of the crown top arc;
b-is the inner cone depth of the drill bit;
b1-is the outer cone height;
k is the slope of the inner cone straight line;
the diameter D1 of the upper impingement cavity (8) being 60 to 120 mm, the height H1 of the upper impingement cavity (8) being 0.35D1 to 0.4D 1;
the diameter D2 of the lower impact chamber (9) is 50 to 95 mm, and the height H2 of the lower impact chamber (9) is 0.7D2 to 0.9D 2.
2. The liquid spinning precursor according to claim 1, wherein: the teeth (6) have a tooth rake angle of 20 to 25 degrees.
3. The liquid spinning precursor according to claim 1, wherein: the number of the blades (10) on the front guide head (5) is 4-9.
4. The liquid spinning precursor according to claim 1, wherein: the number of the nozzles (7) in front of each blade (10) is 1 or 2.
5. The hydrokinetic front guide according to claim 1 or 2, wherein: the edge length of the teeth (6) is 13.44 mm.
6. A method of drilling a well using the hydrodynamic front of any of claims 1-5, the method comprising the steps of:
1) connecting the upper part of the hydraulic front guider to the upper drilling tool, enabling the hydraulic front guider to rotate along with the upper drilling tool,
2) the drilling fluid flows into the fixed power ring (1) to generate continuous power,
3) the drilling fluid flows through the impact rotary wheel (2) to generate alternating high-frequency circumferential impact force,
4) the drilling fluid flows through the annulus (3),
5) the drilling fluid enters the upper impact cavity (8) to generate a first downward axial impact force in the upper impact cavity (8),
6) the drilling fluid flows through the main central hole of the leading head (5),
7) the drilling fluid enters the lower impact cavity (9) to generate a second downward axial impact force in the lower impact cavity (9),
8) the first axial impact force, the second axial impact force and the alternating high-frequency circumferential impact force are transmitted to the teeth (6) through the front guide head (5) and act on the rock at the bottom of the well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410117296.5A CN103850651B (en) | 2014-03-27 | 2014-03-27 | Hydrocyclone leading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410117296.5A CN103850651B (en) | 2014-03-27 | 2014-03-27 | Hydrocyclone leading device |
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| CN103850651A CN103850651A (en) | 2014-06-11 |
| CN103850651B true CN103850651B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410117296.5A Expired - Fee Related CN103850651B (en) | 2014-03-27 | 2014-03-27 | Hydrocyclone leading device |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381825A (en) * | 1981-08-27 | 1983-05-03 | Strata Bit Corporation | Drill bit nozzle |
| CN102383735A (en) * | 2011-06-23 | 2012-03-21 | 中国石油大学(华东) | Ultrahigh-pressure drillbit runner system for underground booster and a construction method thereof |
| CN103210171A (en) * | 2010-10-08 | 2013-07-17 | 贝克休斯公司 | Composite materials including nanoparticles, earth-boring tools and components including such composite materials, polycrystalline materials including nanoparticles, and related methods |
| CN203271584U (en) * | 2013-03-29 | 2013-11-06 | 温州加达机械制造有限公司 | Well-drilling water-pressure torsional impact device |
-
2014
- 2014-03-27 CN CN201410117296.5A patent/CN103850651B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381825A (en) * | 1981-08-27 | 1983-05-03 | Strata Bit Corporation | Drill bit nozzle |
| CN103210171A (en) * | 2010-10-08 | 2013-07-17 | 贝克休斯公司 | Composite materials including nanoparticles, earth-boring tools and components including such composite materials, polycrystalline materials including nanoparticles, and related methods |
| CN102383735A (en) * | 2011-06-23 | 2012-03-21 | 中国石油大学(华东) | Ultrahigh-pressure drillbit runner system for underground booster and a construction method thereof |
| CN203271584U (en) * | 2013-03-29 | 2013-11-06 | 温州加达机械制造有限公司 | Well-drilling water-pressure torsional impact device |
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|---|---|
| CN103850651A (en) | 2014-06-11 |
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