CN112127810A - Wear-resistant roller for centralizing rod body - Google Patents
Wear-resistant roller for centralizing rod body Download PDFInfo
- Publication number
- CN112127810A CN112127810A CN202011151628.3A CN202011151628A CN112127810A CN 112127810 A CN112127810 A CN 112127810A CN 202011151628 A CN202011151628 A CN 202011151628A CN 112127810 A CN112127810 A CN 112127810A
- Authority
- CN
- China
- Prior art keywords
- wear
- resistant
- installation frame
- wheel
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000009434 installation Methods 0.000 claims abstract description 28
- 239000000969 carrier Substances 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- 238000001771 vacuum deposition Methods 0.000 claims description 5
- 230000003712 anti-aging effect Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 3
- 239000010692 aromatic oil Substances 0.000 claims description 3
- REQPQFUJGGOFQL-UHFFFAOYSA-N dimethylcarbamothioyl n,n-dimethylcarbamodithioate Chemical compound CN(C)C(=S)SC(=S)N(C)C REQPQFUJGGOFQL-UHFFFAOYSA-N 0.000 claims description 3
- VYQNWZOUAUKGHI-UHFFFAOYSA-N monobenzone Chemical compound C1=CC(O)=CC=C1OCC1=CC=CC=C1 VYQNWZOUAUKGHI-UHFFFAOYSA-N 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 36
- 230000002547 anomalous effect Effects 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 accelerator Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1007—Wear protectors; Centralising devices, e.g. stabilisers for the internal surface of a pipe, e.g. wear bushings for underwater well-heads
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
The invention discloses a wear-resistant roller for a centering rod body, which structurally comprises an installation frame, two wheel carriers and a swinging piece, wherein the installation frame is detachably arranged on the centering rod body, an elastic piece is arranged at the joint of the installation frame and the centering rod body, a rotatable wear-resistant wheel body is arranged in each wheel carrier, a movable groove is formed in an opening of the installation frame, the two wheel carriers are movably arranged on the movable groove, the wear-resistant wheel body always extends out of the installation frame, each swinging piece comprises two swinging rods connected through hinges, the joint of the two swinging rods is fixed in the installation frame, the end parts of the two swinging rods are respectively connected to the two wheel carriers one by one, and an adjusting spring is fixed between the two swinging rods.
Description
The technical field is as follows:
the invention relates to the technical field of deepwater drilling and production operation equipment, in particular to a wear-resistant roller for righting a rod body.
Background art:
the centralizer belongs to a well cementation tool, is simple to manufacture, attractive in structure, firm and durable, has large centralizing force, overcomes the defect that the conventional welding type centralizer is easy to generate desoldering, and is a centralizer capable of ensuring the well drilling and cementing quality, and the centralizer can be divided into a roller type centralizer, a sliding block type centralizer, an automatic reversing type centralizer and the like according to the structure, wherein the conventional roller centralizer adopts a roller protruding out of the centralizer and the axis of the roller is perpendicular to the axis of the centralizer, although the friction coefficient of a centralizer rod body and an oil pipe during running is reduced to a certain degree, the centralizer still has the following defects in the actual use process of the roller centralizer: 1. along with the decurrent income of oil pipe, the oil pipe pressure of bottom is great, certain deformation can appear in oil pipe self, the internal diameter that leads to oil pipe appears anomalous shape, when the gyro wheel passes through this position, the gyro wheel can not contact oil pipe sometimes to appear, thereby lead to the gyro wheel to lose the effect of using, secondly, when the gyro wheel contacts the oil pipe inner wall of anomalous shape, the gyro wheel is difficult to laminate completely on oil pipe, the gliding stability about not only having reduced the centralizer, simultaneously this kind of incomplete contact makes the area of contact of gyro wheel and oil pipe little, lead to the gyro wheel wearing and tearing easily, 2, the long-time friction of gyro wheel and oil pipe leads to the gyro wheel wearing and tearing very easily, after wearing and tearing, also hardly change the gyro wheel of wearing and tearing, follow-up maintenance is comparatively.
The invention content is as follows:
the object of the present invention is to provide a wear resistant roller for righting a pole body, solving one or more of the above mentioned prior art problems.
In order to solve the technical problems, the innovation points of the invention are as follows: the structure of the device comprises an installation frame, two wheel carriers and a swinging piece, wherein the installation frame is detachably arranged on a righting rod body, and an elastic piece is arranged at the joint of the installation frame and the righting rod body;
the inside of wheel carrier is equipped with rotatable wear-resisting wheel body, and the opening part of installation frame is equipped with the movable groove, and two mobilizable settings of wheel carrier are on the movable groove, and the outside of installation frame is extended all the time to wear-resisting wheel body, and the swing piece includes two hinged joint's swinging arms, and the junction of two swinging arms is fixed in the inside of installation frame, and the tip of two swinging arms is connected respectively one by one on two wheel carriers, is fixed with regulating spring between two swinging arms.
Further, set up the mounting groove on the body of rod is right to the aforesaid, and the inside of mounting groove is equipped with the spout of symmetry, and the both ends of mounting frame are equipped with the cardboard of symmetry, and cardboard slidable installs on the spout.
Further, above-mentioned elastic component includes buffer spring and slider, and buffer spring sets up in the inside of spout, and slider slidable sets up on the spout and with buffer spring fixed connection, is equipped with the draw-in groove on the slider, and the cardboard card makes installation frame detachable card between two sliders in the inside of draw-in groove.
Further, the preparation process of the wear-resistant wheel body comprises the following steps:
s1, preparing wear-resistant rubber;
s2, the wear-resistant rubber in the step S1 is molded into a wear-resistant wheel body;
s3, trimming the two sides of the wear-resistant wheel body in the step S2 to enable the center of the wear-resistant wheel body to form a bulge;
and S4, performing vacuum coating treatment on the protrusions.
Further, in the above step S1, the components of the abrasion resistant rubber include natural rubber, high styrene resin, sulfur, accelerator, antioxidant, carbon black, aromatic oil, zinc oxide, and stearic acid.
Furthermore, the accelerator is any one or more of CBS, M, DM, MZ, TMTM, TMTD, AA and NS.
Further, the anti-aging agent is one or more of 4010NA, RD, ALBA, 3100, EPPD and T501.
Further, the carbon black is one or more of N220, N330, N550, N326 and N660.
The invention has the beneficial effects that:
1. the invention provides a wear-resistant roller for a centering rod body, which is characterized in that according to the distance between a wear-resistant roller body and an oil pipe on an installation frame, the wear-resistant roller body automatically adapts to the distance between the oil pipe through an elastic part, and the wear-resistant roller body is ensured to be attached to the inside of the oil pipe all the time.
2. When irregular radian occurs in the oil pipe, and the wear-resistant wheel body is attached to the inside of the oil pipe, the distance between the two swing rods is adjusted through the adjusting spring according to the attaching radian of the wear-resistant wheel body and the surface of the oil pipe, so that the wheel frame moves to a proper position in the movable groove, the wear-resistant wheel body is ensured to be attached to the oil pipe in a seamless manner, the resistance of sliding friction of the centering rod body in the oil pipe is further reduced through the seamless attachment, meanwhile, the contact area between the wear-resistant wheel body and the oil pipe can be increased through the seamless attachment of the wear-resistant wheel body and the oil pipe, and the wear resistance of the wear-resistant wheel body is further improved.
3. The wear-resistant roller for the centering rod body is provided, the wear-resistant rubber ensures the integral wear-resistant performance of the wear-resistant roller body, when the wear-resistant roller body is attached to the inside of an oil pipe, the protrusion is in contact with the surface of the oil pipe, and the protrusion is subjected to vacuum coating treatment, so that the mechanical property of the protrusion is improved, and the wear-resistant performance of the protrusion is further improved.
4. The mounting frame and the centering rod body are detachably arranged, so that the mounting frame can be conveniently replaced, and when the wear-resistant wheel body on the mounting frame is damaged, the mounting frame can be directly replaced, so that the wear-resistant roller is simple and convenient.
Description of the drawings:
fig. 1 is a schematic structural view of the side surface of the centralizing rod body of the invention.
Fig. 2 is a structural view of the inside of the installation groove of the present invention.
Fig. 3 is a cross-sectional view of the surface of the wear-resistant wheel body of the present invention.
The specific implementation mode is as follows:
for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Fig. 1 to 3 show an embodiment of the present invention, which structurally includes a mounting frame 1, two wheel carriers 2, and a swinging member 3, wherein the mounting frame 1 is detachably disposed on a righting rod 100, and an elastic member 4 is disposed at a joint between the mounting frame 1 and the righting rod 100;
rotatable wear-resisting wheel body 5 is equipped with in the inside of wheel carrier 2, the opening part of installation frame 4 is equipped with movable groove 12, two movable settings of wheel carrier 2 are on movable groove 12, wear-resisting wheel body 5 extends the outside of installation frame 1 all the time, swinging member 3 includes two hinged joint's swinging arms 31, the junction of two swinging arms 31 is fixed in the inside of installation frame 1, the tip of two swinging arms 31 is connected respectively on two wheel carriers 2 one by one, be fixed with regulating spring 311 between two swinging arms 31.
The working principle of the invention for jointing the wear-resistant wheel body 5 and the oil pipe is as follows: according to the distance between the wear-resistant wheel body 5 on the installation frame 1 and the oil pipe, the wear-resistant wheel body 5 automatically adapts to the distance between the oil pipe through the elastic piece 4, the wear-resistant wheel body 5 is ensured to be attached to the inner part of the oil pipe all the time, secondly, when the inside of the oil pipe has irregular radian and the wear-resistant wheel body 5 is attached to the inside of the oil pipe, according to the attaching radian of the wear-resistant wheel body 5 and the surface of the oil pipe, the distance between the two swinging rods 31 is adjusted through the adjusting spring 311, thereby ensuring that the wheel carrier 2 moves to a proper position in the movable groove 12, ensuring that the wear-resistant wheel body 5 can be seamlessly attached to the oil pipe, this seamless fit further reduces the resistance to sliding friction of the centralizer body 100 within the tubing, meanwhile, the seamless joint of the wear-resistant wheel body 5 and the oil pipe can improve the contact area of the wear-resistant wheel body 5 and the oil pipe, and further the wear resistance of the wear-resistant wheel body 5 is improved.
In the invention, the mounting frame 1 and the centering rod body 100 are detachably arranged, so that the mounting frame 1 can be conveniently replaced, and when the wear-resistant wheel body 5 on the mounting frame 1 is damaged, the mounting frame 1 can be directly replaced, thus being simple and convenient.
In the present invention, to describe the mounting structure of the mounting frame 1 on the centering rod 100 specifically, the centering rod 100 is provided with a mounting groove 6, symmetrical sliding grooves 61 are provided inside the mounting groove 6, symmetrical clamping plates 11 are provided at two ends of the mounting frame 1, and the clamping plates 11 are slidably mounted on the sliding grooves 61.
Above-mentioned elastic component 4 includes buffer spring 41 and slider 42, and buffer spring 41 sets up in the inside of spout 61, slider 42 slidable set up on spout 61 and with buffer spring 41 fixed connection, be equipped with draw-in groove 421 on slider 42, cardboard 11 card makes installation frame 1 detachable card between two sliders 42 in the inside of draw-in groove 421.
In the invention, the mounting frame 1 is detachably mounted in the mounting groove 6 through the clamping plate 11 and the clamping groove 421, and meanwhile, elastic sliding of the mounting frame 1 in the mounting groove 6 is realized through sliding of the sliding block 42 in the sliding groove 61 and buffering adjustment of the buffering spring 41, so that the wear-resistant wheel body 5 is automatically adapted to the distance between oil pipes, and the wear-resistant wheel body 5 is attached to the inside of the oil pipes.
In the invention, the preparation process of the wear-resistant wheel body 5 comprises the following steps:
s1, preparing wear-resistant rubber;
s2, the wear-resistant rubber in the step S1 is molded into the wear-resistant wheel body 5;
s3, trimming the two sides of the wear-resistant wheel body 5 in the step S2 to form a bulge 51 at the center position of the wear-resistant wheel body 5;
and S4, performing vacuum coating treatment on the protrusion 51.
In the invention, the wear-resistant rubber ensures the whole wear-resistant performance of the wear-resistant wheel body 5, when the wear-resistant wheel body 5 is attached to the inside of an oil pipe, the protrusion 51 is in contact with the surface of the oil pipe, and the mechanical property of the protrusion 51 is improved by performing vacuum coating treatment on the protrusion 51, so that the wear-resistant performance of the protrusion 51 is further improved.
In the present invention, in the above step S1, the components of the abrasion resistant rubber include natural rubber, high styrene resin, sulfur, an accelerator, an antioxidant, carbon black, aromatic oil, zinc oxide, and stearic acid.
In the invention, the accelerator is any one or more of CBS, M, DM, MZ, TMTM, TMTD, AA and NS.
In the invention, the anti-aging agent is one or more of 4010NA, RD, ALBA, 3100, EPPD and T501.
In the present invention, the carbon black is one or more selected from the group consisting of N220, N330, N550, N326 and N660.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a wear-resisting gyro wheel for righting the body of rod which characterized in that: the structure of the device comprises an installation frame (1), two wheel carriers (2) and a swinging piece (3), wherein the installation frame (1) is detachably arranged on a righting rod body (100), and an elastic piece (4) is arranged at the joint of the installation frame (1) and the righting rod body (100);
the inside of wheel carrier (2) is equipped with rotatable wear-resisting wheel body (5), the opening part of installation frame (4) is equipped with movable groove (12), two the mobilizable setting of wheel carrier (2) is in on movable groove (12), extend all the time wear-resisting wheel body (5) the outside of installation frame (1), swing piece (3) are including two hinged joint's swinging arms (31), two the junction of swinging arms (31) is fixed the inside of installation frame (1), two the tip of swinging arms (31) is two one by one respectively on wheel carrier (2), two be fixed with between swinging arms (31) regulating spring (311).
2. A wear roller for a centralizing rod in accordance with claim 1, characterized in that: set up mounting groove (6) on righting the body of rod (100), the inside of mounting groove (6) is equipped with spout (61) of symmetry, the both ends of installation frame (1) are equipped with cardboard (11) of symmetry, cardboard (11) slidable install on spout (61).
3. A wear roller for a centralizing rod in accordance with claim 2, characterized in that: elastic component (4) include buffer spring (41) and slider (42), buffer spring (41) set up the inside of spout (61), slider (42) slidable set up on spout (61) and with buffer spring (41) fixed connection, be equipped with draw-in groove (421) on slider (42), cardboard (11) card make installation frame (1) detachable card two in the inside of draw-in groove (421) between slider (42).
4. A wear roller for a centralizing rod in accordance with claim 3, characterized in that: the preparation process of the wear-resistant wheel body (5) comprises the following steps:
s1, preparing wear-resistant rubber;
s2, the wear-resistant rubber in the step S1 is molded into a wear-resistant wheel body (5);
s3, trimming two sides of the wear-resistant wheel body (5) in the step S2 to enable the center position of the wear-resistant wheel body (5) to form a bulge (51);
s4, carrying out vacuum coating treatment on the protrusion (51).
5. A wear roller for a centralizing rod in accordance with claim 4, characterized in that: in the step S1, the components of the abrasion-resistant rubber include natural rubber, high styrene resin, sulfur, an accelerator, an anti-aging agent, carbon black, aromatic oil, zinc oxide, and stearic acid.
6. A wear roller for a centralizing rod in accordance with claim 5, characterized in that: the accelerant is any one or more of CBS, M, DM, MZ, TMTM, TMTD, AA and NS.
7. A wear roller for a centralizing rod in accordance with claim 6, characterized in that: the anti-aging agent is one or more of 4010NA, RD, ALBA, 3100, EPPD and T501.
8. A wear roller for a centralizing rod in accordance with claim 7, wherein: the carbon black is any one or more of N220, N330, N550, N326 and N660.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151628.3A CN112127810A (en) | 2020-10-26 | 2020-10-26 | Wear-resistant roller for centralizing rod body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151628.3A CN112127810A (en) | 2020-10-26 | 2020-10-26 | Wear-resistant roller for centralizing rod body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112127810A true CN112127810A (en) | 2020-12-25 |
Family
ID=73853808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011151628.3A Withdrawn CN112127810A (en) | 2020-10-26 | 2020-10-26 | Wear-resistant roller for centralizing rod body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112127810A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5785125A (en) * | 1996-10-21 | 1998-07-28 | Tiw Corporation | Mechanical thru-tubing centralizer |
| CN201306133Y (en) * | 2008-11-27 | 2009-09-09 | 徐荣恩 | Variable-nominal-diameter centralizer |
| US20100018698A1 (en) * | 2008-07-25 | 2010-01-28 | Stephen Randall Garner | Tubing centralizer |
| CN102181084A (en) * | 2011-04-07 | 2011-09-14 | 四川省成都市华泰橡塑制品有限公司 | Rubber for vehicle shock absorber |
| CN202493251U (en) * | 2011-12-23 | 2012-10-17 | 中国石油化工股份有限公司 | Umbrella-opening aiding device for horizontal well logging |
| CN204526665U (en) * | 2014-11-27 | 2015-08-05 | 安徽嘉木橡塑工业有限公司 | A kind of rubber tire |
| CN205534830U (en) * | 2016-04-05 | 2016-08-31 | 武汉理工大学 | Pipeline robot |
| CN210737759U (en) * | 2019-08-23 | 2020-06-12 | 广东绘宇智能勘测科技有限公司 | Crawler-type drainage pipeline desilting robot |
| CN111594065A (en) * | 2020-06-10 | 2020-08-28 | 张雪蓉 | Composite sucker rod centering device for oil field |
| CN211448542U (en) * | 2020-08-04 | 2020-09-08 | 胜利方兰德石油装备股份有限公司 | Energy-saving anti-corrosion wear-resistant wrapped sucker rod |
-
2020
- 2020-10-26 CN CN202011151628.3A patent/CN112127810A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5785125A (en) * | 1996-10-21 | 1998-07-28 | Tiw Corporation | Mechanical thru-tubing centralizer |
| US20100018698A1 (en) * | 2008-07-25 | 2010-01-28 | Stephen Randall Garner | Tubing centralizer |
| CN201306133Y (en) * | 2008-11-27 | 2009-09-09 | 徐荣恩 | Variable-nominal-diameter centralizer |
| CN102181084A (en) * | 2011-04-07 | 2011-09-14 | 四川省成都市华泰橡塑制品有限公司 | Rubber for vehicle shock absorber |
| CN202493251U (en) * | 2011-12-23 | 2012-10-17 | 中国石油化工股份有限公司 | Umbrella-opening aiding device for horizontal well logging |
| CN204526665U (en) * | 2014-11-27 | 2015-08-05 | 安徽嘉木橡塑工业有限公司 | A kind of rubber tire |
| CN205534830U (en) * | 2016-04-05 | 2016-08-31 | 武汉理工大学 | Pipeline robot |
| CN210737759U (en) * | 2019-08-23 | 2020-06-12 | 广东绘宇智能勘测科技有限公司 | Crawler-type drainage pipeline desilting robot |
| CN111594065A (en) * | 2020-06-10 | 2020-08-28 | 张雪蓉 | Composite sucker rod centering device for oil field |
| CN211448542U (en) * | 2020-08-04 | 2020-09-08 | 胜利方兰德石油装备股份有限公司 | Energy-saving anti-corrosion wear-resistant wrapped sucker rod |
Non-Patent Citations (1)
| Title |
|---|
| 姚博;刘美玲;张翠萍;韩新民: "新型抽油机悬绳器光杆自动扶正装置", 石油机械 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201225 |