CN111197481A - Bearing drilling tool of measurement and control instrument while drilling - Google Patents
Bearing drilling tool of measurement and control instrument while drilling Download PDFInfo
- Publication number
- CN111197481A CN111197481A CN201811284976.0A CN201811284976A CN111197481A CN 111197481 A CN111197481 A CN 111197481A CN 201811284976 A CN201811284976 A CN 201811284976A CN 111197481 A CN111197481 A CN 111197481A
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- drilling tool
- drilling
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- sealing
- cover plate
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- 238000005553 drilling Methods 0.000 title claims abstract description 131
- 238000005259 measurement Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 107
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 241001212149 Cathetus Species 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling And Boring (AREA)
Abstract
The invention relates to a bearing drilling tool of a measurement and control instrument while drilling, which belongs to the field of tools while drilling and comprises a drilling tool body, wherein a flow passage for circulating drilling fluid is arranged in the drilling tool body; a sealing cover plate is arranged on the side face of the drilling tool body, and a sealed circuit and a sensor cavity are arranged between the sealing cover plate and the drilling tool body; electronic devices and sensors of the measurement and control while drilling instrument are installed in the circuit and the sensor cavity. The invention is provided with the circuit and the sensor cavity, can bear the electronic components and the sensor of the measurement and control instrument, has larger bearing space and also ensures the safety of the instrument.
Description
Technical Field
The invention relates to a bearing drilling tool of a measurement and control while drilling instrument, in particular to a bearing drilling tool of a measurement and control while drilling instrument with a high-pressure-resistant oversized cavity, and belongs to the field of measurement and control while drilling tools.
Background
In the oil drilling operation, along with the gradual deepening of the drilling difficulty, the drilling engineering has higher and higher requirements on measurement and control instruments while drilling. The size of a circuit and a sensor which can be borne by a drilling tool structure of the measurement-while-drilling instrument is an important standard for measuring the structural design of the measurement-while-drilling instrument. How to ensure the safety and the service life of an instrument structure becomes a difficult problem in the field of structural design while improving the sizes of a carried circuit and a sensor.
Disclosure of Invention
Aiming at the problems, the invention provides a bearing drilling tool of a measurement and control while drilling instrument, which is provided with a circuit and a sensor cavity, can bear electronic components and sensors of the measurement and control instrument, has larger bearing space and also ensures the safety of the instrument.
The invention provides a bearing drilling tool of a measurement and control while drilling instrument, which comprises:
the drilling tool comprises a drilling tool body, wherein a flow passage for circulating drilling fluid is arranged in the drilling tool body; and
a sealing cover plate is arranged on the side surface of the drilling tool body, and a sealed circuit and a sensor cavity are arranged between the sealing cover plate and the drilling tool body;
electronic devices and sensors of the measurement and control while drilling instrument are installed in the circuit and the sensor cavity.
The invention has the further improvement that a drilling tool joint surface is arranged on the side wall of the drilling tool body, and a first groove is arranged on the drilling tool joint surface; a sealing cover plate combining surface is arranged on the sealing cover plate, and a second groove is arranged on the sealing cover plate combining surface;
the drilling tool joint surface is connected with the sealing cover joint surface, and the first groove and the second groove jointly form a circuit and a sensor cavity.
The invention is further improved in that an outer ring sealing groove and an inner ring sealing groove are arranged on the joint surface of the sealing cover plate, the inner ring sealing groove is arranged outside the edge of the second groove, and the outer ring sealing groove is arranged outside the edge of the inner ring sealing groove.
The invention has the further improvement that an outer sealing ring is arranged in the sealing groove of the outer ring; an inner sealing ring is arranged in the inner ring sealing groove.
The invention has the further improvement that a sealing ring bracket is also arranged in the inner ring sealing groove, and the section of the sealing ring bracket is in a right trapezoid shape;
the inclined edge of the right trapezoid is in contact with the inner sealing ring, and the long bottom edge of the right trapezoid faces the circuit and the sensor cavity.
The invention is further improved in that the central axis of the flow passage and the central axis of the joint surface of the drilling tool are respectively positioned on two sides of the central axis of the drilling tool body.
The invention is further improved in that the outer wall of the sealing cover plate is arc-shaped, the radian of the side wall of the drilling tool body is the same as that of the outer wall of the sealing cover plate, and the drilling tool body and the sealing cover plate jointly form a columnar structure.
The drilling tool body is further improved in that two inertia moment balance grooves are formed in the drilling tool body and are respectively located on two sides of the flow channel.
The invention has the further improvement that a plurality of screw holes are arranged on the combining surface of the drilling tool, and screw through holes are arranged on the sealing cover plate at the positions corresponding to the screw holes; the screw hole and the screw through hole are connected through a screw.
The invention is further improved in that a plurality of arc-shaped sawtooth structures with outward openings are arranged on the outer sealing ring, and the sawtooth structures surround the screw through holes.
Compared with the prior art, the invention has the advantages that:
the bearing drilling tool of the measurement and control while drilling instrument is provided with the circuit and the sensor cavity, can bear electronic components and sensors of the measurement and control instrument, has a larger bearing space, and also ensures the safety and the service life of the instrument.
Drawings
FIG. 1 is a schematic diagram of a drill-while-drilling tool-carrying drilling tool according to an embodiment of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic illustration of the construction of a drill body according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a sealing cover plate according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a drill-while-drilling tool-carrying drilling tool according to an embodiment of the present invention; showing the assembled relationship of the drill body and the sealing cover plate.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
The meaning of the reference symbols in the drawings is as follows: 1. the drilling tool comprises a drilling tool body, 2, a sealing cover plate, 3, a circuit and sensor cavity, 11, a drilling tool joint surface, 12, a first groove, 13, an inertia moment balance groove, 14, a flow channel, 15, a screw hole, 16, a connecting screw thread, 20, a sealing cover plate joint surface, 21, a second groove, 22, an inner ring sealing groove, 23, a sealing ring bracket, 24, an inner sealing ring, 25, an outer ring sealing groove, 26, an outer sealing ring, 27, screw through holes, 28, screws, 29 and a sawtooth structure.
Detailed Description
The invention will be further explained with reference to the drawings.
FIG. 1 schematically shows a measurement-while-drilling instrument carrying a drilling tool according to an embodiment of the invention. The bearing drilling tool of the measurement and control while drilling instrument is provided with the circuit and the sensor cavity, can bear electronic components and sensors of the measurement and control instrument, has a larger bearing space, and also ensures the safety and the service life of the instrument.
As shown in fig. 1, the measurement and control while drilling instrument according to the present embodiment carries a drilling tool, which includes a drilling tool body 1. The drilling tool body 1 is of a columnar structure, a flow channel 14 is arranged in the drilling tool body 1, and drilling fluid flows through the flow channel 14. The flow passage 14 is provided along the longitudinal direction of the tool body 1 and penetrates the tool body 1. Two ends of the drilling tool body 1 are respectively provided with a connecting screw thread 16 for connecting with other underground equipment. The side of the drilling tool body 1 is provided with a sealing cover plate 2, and a sealed circuit and sensor cavity 3 is arranged between the sealing cover plate 2 and the drilling tool body 1. Wherein, the circuit and the sensor cavity 3 are internally provided with an electronic device and a sensor of a measurement and control instrument while drilling.
In the load-bearing drilling tool of the measurement and control while drilling instrument according to the embodiment, a circuit and sensor cavity 3 is arranged between the drilling tool body 1 and the sealing cover plate 2, and the diameter of the circuit and sensor cavity 3 is about one third of the outer diameter of the drilling tool body 1. Through set up electron device and sensor in circuit and the sensor cavity 3, increased the size of cavity, improved the security and the life of equipment. Preferably, the drilling tool body 1 and the sealing cover plate 2 are made of non-magnetic steel materials, and the yield strength is not lower than 1000 MPa. The drilling tool body 1 is provided with a connecting screw thread 16 for external equipment fittings of an instrument. A tapping position is left between the circuit and sensor cavity 3 and the connecting screw thread 16, and the length is about 200 mm.
In one embodiment, the side wall of the drill body 1 is provided with a drill joint surface 11, and the drill joint surface 11 is preferably a plane. In this embodiment, the sealing cover plate 2 is provided with a sealing cover plate combining surface 20, and the sealing cover plate combining surface 20 is attached to and fixedly connected with the drilling tool combining surface 11. In this embodiment, a first groove 12 is disposed on the drilling tool coupling surface 11, a second groove 21 is disposed on the sealing cover coupling surface 20, and the first groove 12 and the second groove 21 together form the circuit and sensor cavity 3.
In the measurement-while-drilling instrument bearing drilling tool according to the embodiment, the drilling tool body 1 and the sealing cover plate 2 are connected through a drilling tool joint surface and a sealing cover plate joint surface to form a detachable and fixed connection mode, so that the drilling tool is convenient to detach and assemble, and internal electronic devices are conveniently replaced and maintained.
In one embodiment, the sealing cover coupling surface 20 is provided with an outer ring sealing groove 25 and an inner ring sealing groove 22. And an outer ring sealing groove 25 is arranged on the joint surface of the sealing cover plate, and the outer ring sealing groove 25 is arranged outside the inner ring sealing groove 22. The inner ring sealing groove 22 is arranged outside the edge of the second groove 21, and pressure-bearing metal is arranged between the inner ring sealing groove 22 and the first groove 12, and the thickness of the pressure-bearing metal is not less than four millimeters.
In a preferred embodiment, an outer sealing ring 26 is arranged in the outer ring sealing groove 25; an inner sealing ring 24 is arranged in the inner ring sealing groove 22. The outer and inner sealing rings 26, 24 are preferably resilient sealing rings. The sealing effect can be enhanced by providing the outer sealing ring 26 and the inner sealing ring 24. The circuit and the sensor cavity 3 are kept sealed, and drilling fluid or other impurities are prevented from entering the circuit and the sensor cavity 3 to damage electronic devices.
In a preferred embodiment, a seal ring bracket 23 is disposed in the inner ring seal groove 22, the seal bracket 23 is disposed on the upper portion of the inner seal ring, and the seal bracket is used for being padded in the inner ring seal groove 22, so that the inner seal ring 24 is in a compressed state, and the sealing effect is enhanced.
In one embodiment, the cross-section of the ligating bracket 23 is a right trapezoid. Wherein the hypotenuse of the right trapezoid contacts the inner sealing ring 24, the long bottom side of the right trapezoid facing the circuit and sensor cavity 3. Preferably, the material of the seal ring bracket 23 is PEEK, the long bottom side of the right trapezoid of the cross section of the seal ring bracket 23 faces the circuit and sensor cavity 3, and the short bottom side faces the pressure source. The included angle between the hypotenuse and the cathetus of the right trapezoid is about 10-15 degrees. By arranging the seal ring bracket 23, the seal ring and the seal ring bracket 23 do not fill the whole sealed cavity in the environment below 175 ℃.
In the measurement and control while drilling instrument load-bearing drilling tool according to the embodiment, the inner ring sealing groove 22 and the outer ring sealing groove 25 are arranged to realize two sealing for the circuit and the sensor cavity 3. Through two seals, can seal high-pressure mud outside circuit and sensor cavity 3 effectively. The area enclosed by the outer ring sealing ring is enlarged as much as possible and must be more than twice of the area enclosed by the inner ring sealing ring. The strength of the sealing cover plate 2 is checked and verified by using a finite element numerical calculation method, and a high-temperature high-pressure test of more than half an hour is required.
In one embodiment, a flow passage 14 is provided in the drill body 1, and the flow passage 14 is eccentrically arranged. The center of the flow passage 14 is offset from the outer wall of the tool body 1 at the center of the circle and is disposed opposite to the tool joint surface 11. The center of the flow passage 14 and the drill tool joint surface 11 are arranged on one side of the center of the circle where the outer wall is located, and the drill tool joint surface 11 is arranged on the other side. In a preferred embodiment, the flow passage 14 inside the drill body 1 is a cylindrical bore with a surface roughness greater than 1.6 μm and the centre of which is connected to the centre of the circuitry and sensor cavity 3 through the centre of the circle on which the outer wall of the drill body 1 lies.
In one embodiment, the cross section of the sealing cover plate 2 is a segment, and the surface of the sealing cover plate 2 opposite to the sealing cover plate combining surface 20 is an outer wall which is arc-shaped. The radian of the outer wall is the same as that of the outer wall of the drilling tool body 1, and the radian can be matched. When the sealing cover plate 2 is connected to the outer wall, the drilling tool body 1 and the sealing cover plate 2 jointly form a columnar structure.
In one embodiment, two moment of inertia balance grooves 13 are provided on the drill body 1, the moment of inertia balance grooves 13 are provided on the outer wall of the drill body 1, and the moment of inertia balance grooves 13 are respectively located at both sides of the flow passage 14.
In the measurement-while-drilling instrument bearing drilling tool according to the embodiment, the inertia distance balancing structure groove is additionally arranged at the 3 sections of the circuit and the sensor cavity, so that the one-dimensional vector of the inertia distance difference value at every ten degrees interval meets the requirement of checking the inertia distance vector corresponding to the material, the maximum rotating speed and the maximum dog-leg degree designed by the instrument, and the distance between the core of the circuit of the instrument and the 3 sections of the sensor cavity and the axis of the instrument is not more than 1 mm.
In one embodiment, the drill engaging surface 11 is provided with a plurality of screw holes 15, and the screw holes 15 are provided with threads. A screw through hole 27 is formed in the position, opposite to the screw hole 15, of the sealing cover plate 2, and the screw through hole 27 is divided into two sections, namely a through hole close to one side of the joint surface of the sealing cover plate, is small in diameter and is used for extending into a screw rod; the through hole close to one side of the outer wall has a larger diameter and is used for bearing the screw head. The screw hole 15 and the screw passing hole 27 are connected by a screw 28. The screw 28 is preferably a non-magnetic steel screw made of austenitic stainless steel and having a yield strength of not less than 900 mpa. The installation method of the non-magnetic steel screw group adopts a diagonal sequence tightening method.
In the measurement and control while drilling instrument according to this embodiment, the drilling tool joint surface 11 is provided with a plurality of screw holes 15, and the sealing cover plate 2 is provided with a plurality of screw through holes 27, and connected by screws 28. The mode of connecting through the screw is not only connected firmly, still convenient to detach and equipment.
In one embodiment, the seal cover bonding surface and the drill bonding surface 11 each have a surface roughness of greater than 0.8 μm. The area enclosed by the outer ring sealing groove 25 is more than twice of the area enclosed by the inner ring sealing groove 22. After the measurement and control while drilling instrument described in this embodiment carries a drilling tool and completes the overall assembly, the instrument needs to be loaded with pressure and torque, so as to achieve the effect of stress relief.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A measurement-while-drilling instrument bearing drilling tool is characterized by comprising:
the drilling tool comprises a drilling tool body (1), wherein a flow channel (14) for circulating drilling fluid is arranged in the drilling tool body (1); and
a sealing cover plate (2) is arranged on the side surface of the drilling tool body (1), and a sealed circuit and sensor cavity (3) is arranged between the sealing cover plate (2) and the drilling tool body (1);
wherein, the circuit and the sensor cavity (3) are internally provided with an electronic device and a sensor of a measurement and control instrument while drilling.
2. The measurement-while-drilling instrument bearing drilling tool as recited in claim 1, wherein a drilling tool joint surface (11) is provided on a side wall of the drilling tool body (1), and a first groove is provided on the drilling tool joint surface (11); a sealing cover plate combining surface (20) is arranged on the sealing cover plate (2), and a second groove (21) is arranged on the sealing cover plate combining surface (20);
the drilling tool joint surface (11) is connected with the sealing cover joint surface (20), and the first groove (12) and the second groove (21) jointly form a circuit and a sensor cavity (3).
3. The measurement-while-drilling instrument carrier drilling tool according to claim 2, wherein an outer ring sealing groove (25) and an inner ring sealing groove (22) are arranged on the sealing cover plate joint surface (20), the inner ring sealing groove (22) is arranged outside the edge of the second groove (21), and the outer ring sealing groove (25) is arranged outside the edge of the inner ring sealing groove (22).
4. The measurement-while-drilling instrument carrier drilling tool as claimed in claim 3, wherein an outer sealing ring (26) is arranged in the outer ring sealing groove (25); an inner sealing ring (24) is arranged in the inner ring sealing groove (22).
5. The measurement-while-drilling instrument bearing drilling tool as claimed in claim 3 or 4, wherein a sealing ring bracket (23) is further arranged in the inner ring sealing groove (22), and the cross section of the sealing ring bracket (23) is a right trapezoid;
the inclined side of the right trapezoid is in contact with the inner sealing ring (24), and the long bottom side of the right trapezoid faces the circuit and the sensor cavity (3).
6. The measurement-while-drilling instrument carrying drilling tool as recited in any one of claims 2 to 5, characterized in that the central axis of the flow passage (14) and the central axis of the drilling tool joint surface (11) are respectively located on both sides of the central axis of the drilling tool body (1).
7. The measurement-while-drilling instrument bearing drilling tool as recited in claim 6, wherein the outer wall of the sealing cover plate (2) is arc-shaped, the radian of the side wall of the drilling tool body (1) is the same as that of the outer wall of the sealing cover plate (2), and the drilling tool body (1) and the sealing cover plate (2) jointly form a columnar structure.
8. The measurement-while-drilling instrument bearing drilling tool as claimed in claim 7, wherein two moment of inertia balancing grooves (13) are arranged on the drilling tool body (1), and the moment of inertia balancing grooves (13) are respectively located on two sides of the flow passage (14).
9. The measurement-while-drilling instrument bearing drilling tool as recited in any one of claims 2 to 8, wherein a plurality of screw holes (15) are provided on the drilling tool joint surface (11), and screw through holes (27) are provided on the sealing cover plate (2) at positions opposite to the screw holes (15); the screw hole (15) and the screw through hole (27) are connected through a screw (28).
10. The measurement-while-drilling instrument carrier drilling tool as claimed in claim 9, wherein a plurality of arc-shaped sawtooth structures (29) with outward openings are arranged on the outer sealing ring (26), and the sawtooth structures (29) surround the screw through holes (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811284976.0A CN111197481A (en) | 2018-10-31 | 2018-10-31 | Bearing drilling tool of measurement and control instrument while drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811284976.0A CN111197481A (en) | 2018-10-31 | 2018-10-31 | Bearing drilling tool of measurement and control instrument while drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111197481A true CN111197481A (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811284976.0A Pending CN111197481A (en) | 2018-10-31 | 2018-10-31 | Bearing drilling tool of measurement and control instrument while drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111197481A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809939A (en) * | 2022-06-10 | 2022-07-29 | 山东万洋石油科技有限公司 | Near-bit measuring instrument with azimuth gamma measurement function |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196451A (en) * | 1997-04-09 | 1998-10-21 | 江汉石油管理局钻头厂 | Bearing seal structure |
| CN1298057A (en) * | 2000-12-13 | 2001-06-06 | 江汉石油钻头股份有限公司 | Bearing sealing structure for rotary drill bit |
| CN2793324Y (en) * | 2005-04-14 | 2006-07-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Gamma drilling measuring instrument for declination and location of well |
| CA2804224A1 (en) * | 2013-01-25 | 2014-07-25 | Alex Baranov | Multiple sensor array seismic tool |
| CN104747179A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Stratum density measuring while drilling instrument based on deuterium-tritium accelerator neutron source |
| CN106678341A (en) * | 2017-02-17 | 2017-05-17 | 黄溧震 | Miniature reducer |
| CN107725032A (en) * | 2016-08-12 | 2018-02-23 | 中石化石油工程技术服务有限公司 | A kind of seal shock-proof structure of high temperature and high pressure environment lower component |
-
2018
- 2018-10-31 CN CN201811284976.0A patent/CN111197481A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196451A (en) * | 1997-04-09 | 1998-10-21 | 江汉石油管理局钻头厂 | Bearing seal structure |
| CN1298057A (en) * | 2000-12-13 | 2001-06-06 | 江汉石油钻头股份有限公司 | Bearing sealing structure for rotary drill bit |
| CN2793324Y (en) * | 2005-04-14 | 2006-07-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Gamma drilling measuring instrument for declination and location of well |
| CA2804224A1 (en) * | 2013-01-25 | 2014-07-25 | Alex Baranov | Multiple sensor array seismic tool |
| CN104747179A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Stratum density measuring while drilling instrument based on deuterium-tritium accelerator neutron source |
| CN107725032A (en) * | 2016-08-12 | 2018-02-23 | 中石化石油工程技术服务有限公司 | A kind of seal shock-proof structure of high temperature and high pressure environment lower component |
| CN106678341A (en) * | 2017-02-17 | 2017-05-17 | 黄溧震 | Miniature reducer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809939A (en) * | 2022-06-10 | 2022-07-29 | 山东万洋石油科技有限公司 | Near-bit measuring instrument with azimuth gamma measurement function |
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Effective date of registration: 20220130 Address after: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Applicant after: SINOPEC OILFIELD SERVICE Corp. Applicant after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant after: Sinopec Jingwei Co.,Ltd. Applicant after: Geological measurement and Control Technology Research Institute of Sinopec Jingwei Co.,Ltd. Address before: 100101 Beichen West Road, Chaoyang District, Beijing 8 Beichen world center, block A 703. Applicant before: SINOPEC OILFIELD SERVICE Corp. Applicant before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant before: Sinopec Shengli Petroleum Engineering Co.,Ltd. Measurement and Control Technology Center While Drilling |
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Effective date of registration: 20221214 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: SINOPEC Group Applicant after: SINOPEC OILFIELD SERVICE Corp. Applicant after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant after: Sinopec Jingwei Co.,Ltd. Applicant after: Geological measurement and Control Technology Research Institute of Sinopec Jingwei Co.,Ltd. Address before: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Applicant before: SINOPEC OILFIELD SERVICE Corp. Applicant before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant before: Sinopec Jingwei Co.,Ltd. Applicant before: Geological measurement and Control Technology Research Institute of Sinopec Jingwei Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200526 |
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| RJ01 | Rejection of invention patent application after publication |