CN212130421U - Corrosion-resistant and wear-resistant double-wall drill pipe body - Google Patents
Corrosion-resistant and wear-resistant double-wall drill pipe body Download PDFInfo
- Publication number
- CN212130421U CN212130421U CN202022426379.6U CN202022426379U CN212130421U CN 212130421 U CN212130421 U CN 212130421U CN 202022426379 U CN202022426379 U CN 202022426379U CN 212130421 U CN212130421 U CN 212130421U
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- Prior art keywords
- pipe body
- plating layer
- wall
- corrosion
- joint
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- 230000007797 corrosion Effects 0.000 title claims abstract description 16
- 238000005260 corrosion Methods 0.000 title claims abstract description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000007747 plating Methods 0.000 claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 24
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 20
- 239000000956 alloy Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 238000005253 cladding Methods 0.000 claims description 4
- 210000002445 nipple Anatomy 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to the field of drill pipes, and provides a corrosion-resistant and wear-resistant double-wall drill pipe body, wherein the inner wall of the outer pipe body is electroplated with a plating layer A, two ends of the outer pipe body are provided with a joint A and a joint B, the joint A is an internal thread, the joint B is an external thread, an inner pipe body is arranged in the outer pipe body, and an annular space is formed between the inner pipe body and the outer pipe body; the outer wall of the inner tube body is electroplated with a plating layer B, the inner wall of the inner tube body is electroplated with a plating layer C, one end of the inner tube body is connected with a connecting short section B through threads, the other end of the inner tube body is connected with a connecting short section A through threads, the connecting short section A is connected with the inner wall of the outer tube body, and through holes are uniformly distributed in the connecting short section A; has the advantages that: the utility model discloses a body and outer body surface form the fine and close nickel base alloy-layer that has certain thickness and hardness including, improve the anticorrosive and wear resistance of double-walled drilling rod in the use, improve the fail safe nature and the life of drilling rod.
Description
Technical Field
The utility model belongs to the technical field of the drilling rod and specifically relates to a corrosion-resistant stand wear and tear double-walled drilling rod body is related to.
Background
In the drilling operation of petroleum, natural gas, geology and geothermol power, the stratum which is easy to leak is often drilled, and the drilling fluid is leaked in the stratum, so that great economic loss is caused to the drilling operation, and great difficulty is brought to the drilling operation. The adoption of gas drilling is an effective drilling mode for drilling the stratum which is easy to leak. In order to more effectively perform gas drilling operation, a special drill rod-a double-wall drill rod capable of establishing an inner annular hollow double-layer drilling fluid channel and an outer annular hollow double-layer drilling fluid channel is developed. The double-wall drill rod consists of an inner layer pipe body and an outer layer pipe body. An annular space is formed between the inner pipe body and the outer pipe body and is a first transmission channel of the drilling fluid (or gas); and an inner hole of the inner-layer pipe body is a second transmission channel of the drilling fluid. Each double-wall drill pipe is connected with the thread of the outer drill pipe to form a drill pipe column so as to transmit torque and bit pressure and bear the pressure of drilling fluid. Because the high-pressure air in gas drilling often contains very high oxygen, even adopts carbon dioxide gas, the outer wall of the inner layer drill pipe body and the inner wall of the outer layer drill pipe body are often corroded in the underground high-temperature and humid environment. Meanwhile, because the returned gas contains a large amount of rock debris, the rock debris flowing at high speed collides with the inner wall of the inner-layer drill pipe body, so that an erosion pit is formed on the inner surface of the inner-layer pipe, and not only is the inner wall of the inner-layer pipe abraded, but also erosion (scouring corrosion) is generated at the same time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the not enough of prior art, and provide a corrosion-resistant stand wear and tear double-walled drilling rod body.
The utility model discloses new technical scheme is: a corrosion-resistant and wear-resistant double-wall drill pipe body comprises an outer pipe body, an inner pipe body, a connecting short section, a connector and a coating, wherein the inner wall of the outer pipe body is electroplated with the coating A, the connector A and the connector B are arranged at two ends of the outer pipe body, the connector A is an internal thread, the connector B is an external thread, the inner pipe body is arranged in the outer pipe body, and an annular space is formed between the inner pipe body and the outer pipe body; the outer wall of the inner pipe body is electroplated with a coating B, the inner wall of the inner pipe body is electroplated with a coating C, one end of the inner pipe body is connected with a connecting short section B through threads, the other end of the inner pipe body is connected with a connecting short section A through threads, the connecting short section A is connected with the inner wall of the outer pipe body, and through holes are uniformly distributed in the connecting short section A.
The connecting short section A is in threaded connection or inserted connection with the inner wall of the outer pipe body.
The plating layer A is nickel-based alloy, and the nickel content is 80%.
The thickness of the plating layer A is 60um, and the hardness is HV 0.1700.
The plating layer B is nickel-based alloy, and the nickel content is 93%.
The thickness of the plating layer B is 80um, and the hardness is HV 0.1800.
The plating layer C is a nickel-based alloy, and the nickel content is 93%.
The thickness of the plating layer C is 80um, and the hardness is HV 0.1800.
The utility model has the advantages that: the utility model discloses a body and outer body surface form the fine and close nickel base alloy-layer that has certain thickness and hardness including, improve the anticorrosive and wear resistance of double-walled drilling rod in the use, improve the fail safe nature and the life of drilling rod.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic diagram of a plated layer structure of a pipe body.
Wherein: 1. outer body, 2, inner body, 3, connection nipple A, 4, joint A, 5, joint B, 6, connection nipple B, 7, cladding A, 8, cladding B, 9, cladding C.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A corrosion-resistant and wear-resistant double-wall drill pipe body comprises an outer pipe body 1, an inner pipe body 2, a connecting short section, a joint and a plating layer, wherein the plating layer A7 is electroplated on the inner wall of the outer pipe body 1, the joint A4 and the joint B5 are arranged at two ends of the outer pipe body 1, the joint A4 is an internal thread, the joint B5 is an external thread, the inner pipe body 2 is installed in the outer pipe body 1, and an annular space is formed between the inner pipe body 2 and the outer pipe body 1; the outer wall of the inner tube body 2 is plated with a plating layer B8, the inner wall of the inner tube body 2 is plated with a plating layer C9, one end of the inner tube body 2 is connected with a connecting short section B6 through threads, the other end of the inner tube body 2 is connected with a connecting short section A3 through threads, the connecting short section A3 is connected with the inner wall of the outer tube body 1, and through holes are uniformly distributed in the connecting short section A3.
The connecting short section A3 is in threaded connection or insertion connection with the inner wall of the outer tube body 1.
The plating layer A7 is a nickel-based alloy, and the nickel content is 80%.
The thickness of the plating layer A7 is 60um, and the hardness is HV 0.1700.
The plating layer B8 is a nickel-based alloy, and the nickel content is 93%.
The thickness of the plating layer B8 is 80um, and the hardness is HV 0.1800.
The plating layer C9 is a nickel-based alloy, and the nickel content is 93%.
The thickness of the plating layer C9 is 80um, and the hardness is HV 0.1800.
During the use, drilling fluid flows into the well bottom from the well head through an annular space between an inner pipe body 2 and an outer pipe body 1, and the drilling fluid carrying rock debris flows to the well head from the well bottom through the inner wall of the inner pipe body 2, so that the rock debris is brought to the ground.
Claims (8)
1. The utility model provides a corrosion-resistant stand wear and tear double-walled drilling rod body, includes outer body (1), interior body (2), connects nipple joint, joint and cladding material, its characterized in that: the inner wall of the outer pipe body (1) is electroplated with a plating layer A (7), two ends of the outer pipe body (1) are provided with a joint A (4) and a joint B (5), the joint A (4) is an internal thread, the joint B (5) is an external thread, an inner pipe body (2) is arranged in the outer pipe body (1), and an annular space is formed between the inner pipe body (2) and the outer pipe body (1); the outer wall of the inner pipe body (2) is electroplated with a plating layer B (8), the inner wall of the inner pipe body (2) is electroplated with a plating layer C (9), one end of the inner pipe body (2) is connected with a connection short section B (6) through threads, the other end of the inner pipe body (2) is connected with a connection short section A (3) through threads, the connection short section A (3) is connected with the inner wall of the outer pipe body (1), and through holes are uniformly distributed on the connection short section A (3).
2. A corrosion and wear resistant double wall drill pipe body as claimed in claim 1, wherein: the connecting short section A (3) is in threaded connection or inserted connection with the inner wall of the outer pipe body (1).
3. A corrosion and wear resistant double wall drill pipe body as claimed in claim 1, wherein: the plating layer A (7) is nickel-based alloy, and the nickel content is 80%.
4. A corrosion and wear resistant double wall drill pipe body as claimed in claim 1 or 3, wherein: the thickness of the plating layer A (7) is 60um, and the hardness is HV 0.1700.
5. A corrosion and wear resistant double wall drill pipe body as claimed in claim 1, wherein: the plating layer B (8) is nickel-based alloy, and the nickel content is 93%.
6. A corrosion and wear resistant double wall drill pipe body as claimed in claim 1 or 5, wherein: the thickness of the plating layer B (8) is 80um, and the hardness is HV 0.1800.
7. A corrosion and wear resistant double wall drill pipe body as claimed in claim 1, wherein: the plating layer C (9) is nickel-based alloy, and the nickel content is 93%.
8. A corrosion and wear resistant double wall drill pipe body as claimed in claim 1 or 7 wherein: the thickness of the plating layer C (9) is 80um, and the hardness is HV 0.1800.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022426379.6U CN212130421U (en) | 2020-10-28 | 2020-10-28 | Corrosion-resistant and wear-resistant double-wall drill pipe body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022426379.6U CN212130421U (en) | 2020-10-28 | 2020-10-28 | Corrosion-resistant and wear-resistant double-wall drill pipe body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212130421U true CN212130421U (en) | 2020-12-11 |
Family
ID=73685706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022426379.6U Active CN212130421U (en) | 2020-10-28 | 2020-10-28 | Corrosion-resistant and wear-resistant double-wall drill pipe body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212130421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901086A (en) * | 2021-02-05 | 2021-06-04 | 中国石油天然气集团有限公司 | Erosion-resistant composite aluminum alloy drill rod and manufacturing process thereof |
-
2020
- 2020-10-28 CN CN202022426379.6U patent/CN212130421U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901086A (en) * | 2021-02-05 | 2021-06-04 | 中国石油天然气集团有限公司 | Erosion-resistant composite aluminum alloy drill rod and manufacturing process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A corrosion-resistant and wear-resistant double wall drill pipe body Effective date of registration: 20230330 Granted publication date: 20201211 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Pledgor: Shandong Weima Equipment Technology Co.,Ltd. Registration number: Y2023980036780 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20201211 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Pledgor: Shandong Weima Equipment Technology Co.,Ltd. Registration number: Y2023980036780 |