CN204646128U - Wear-resistant heavy weight drill pipe - Google Patents
Wear-resistant heavy weight drill pipe Download PDFInfo
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- CN204646128U CN204646128U CN201520139108.9U CN201520139108U CN204646128U CN 204646128 U CN204646128 U CN 204646128U CN 201520139108 U CN201520139108 U CN 201520139108U CN 204646128 U CN204646128 U CN 204646128U
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- drill pipe
- heavy weight
- weight drill
- wear
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Abstract
The utility model discloses a kind of wear-resistant heavy weight drill pipe, comprise body, be positioned at the thick section in the middle part of described body and lay respectively at female adapter section and the male connection section at described body two ends, be all formed with the hardened layer of certain thickness and the width formed by intermediate frequency heat treatment on the surface of described female adapter section, male connection section and thick section.Because internal threads junction, thick section, middle part and male connection section carry out surperficial intermediate frequency heat treatment, its surface is made to produce the hardened layer of certain depth and width, thus enhance the abrasion resistance on heavy weight drill pipe surface, reduce the heavy wear phenomenon of heavy weight drill pipe, extend the application life of heavy weight drill pipe.
Description
Technical field
The utility model relates to drilling applications, particularly relates to a kind of wear-resistant heavy weight drill pipe used in deep-well, Open-Hole Section, abrasive layer wellbore construction process.
Background technology
At present, along with increasing of drilling well under inclined shaft, horizontal well and complicated geological environment condition, Bottom Hole Assembly (BHA) needs a large amount of heavy weight drill pipes, to meet the needs that drilling well is produced.For increasing abrasion resistance, usually at the joint of heavy weight drill pipe and thick section, middle part welding wear-resistant strip, and in use easily occur coming off, the surfacing defect such as crackle.But, due to factors such as drilling speed is high, stratum abrasiveness strong, ultradeep wells, make heavy weight drill pipe joint and middle part thicken weldering part wears serious, cause the early time discards of heavy weight drill pipe, even cause down-hole equipment lost efficacy or occurred accident, not only have impact on drilling well and produce, also add drilling cost.
Summary of the invention
For the feature in deep-well, Open-Hole Section, abrasive layer wellbore construction process, the utility model provides that a kind of drilling rod surface abrasion resistance is high, the heavy weight drill pipe of long service life.
For this reason, the technical solution of the utility model is as follows:
A kind of wear-resistant heavy weight drill pipe, comprise body, be positioned at the thick section in the middle part of described body and lay respectively at female adapter section and the male connection section at described body two ends, be all formed with the hardened layer of certain thickness and the width formed by intermediate frequency heat treatment on the surface of described female adapter section, male connection section and thick section.
Preferably, the length of the hardened layer of described female adapter section and male connection section is 230-300mm, start from the circular bead surface 300mm place of distance internal and external screw thread junction outer end respectively to extend inside inside, male connection section, the thickness of the hardened layer of described interior, nipple section is 6-7mm.
Preferably, the length of the hardened layer of described thick section (3) is the whole thick section length except each 50mm in these two ends, thick section, and the thickness of the hardened layer of this thick section is 2-3mm.
The beneficial effects of the utility model are as follows:
1, adopt intermediate-frequency heat treatment process, Surface hardened layer is carried out to heavy weight drill pipe junction and thick section, middle part, and inside keeps metallographic structure before treatment and performance substantially.The quench-hardened case of certain depth and width makes drilling rod obtain the combination property of high strength, high-wearing feature and high tenacity, effectively prevent phenomenon and the down-hole accident of heavy weight drill pipe heavy wear, extend the application life of drilling tool, meet deep-well, Open-Hole Section, abrasive layer to the needs of heavy weight drill pipe abrasion resistance;
2, heavy weight drill pipe joint two ends reserve certain length and do not carry out Surface heat-treatent, ensure that the mechanical performance of two ends screw thread, simultaneously for rethreading reserves processing length.Two ends, thick section, middle part reserve certain length and do not carry out Surface heat-treatent, prevent the problem that two ends stress is concentrated.
3, the hardness ratio drilling tool wear-resistant band of the cementation zone of this wear-resistant heavy weight drill pipe is slightly high, just can meet the needs of drilling well production on heavy weight drill pipe surface without surfacing wear-resistant strip, stopped in use to occur come off, the surfacing defect such as crackle.
Accompanying drawing explanation
Fig. 1 is the structural representation of wear-resistant heavy weight drill pipe of the present utility model.
In figure: 1, female adapter; 2, body; 3, thick section; 4, male connection.
Detailed description of the invention
Be described in detail below in conjunction with the structure of accompanying drawing to wear-resistant heavy weight drill pipe of the present utility model.
Figure 1 shows that a kind of wear-resistant heavy weight drill pipe used in deep-well, Open-Hole Section, abrasive layer wellbore construction process, it comprises body 2, be positioned at the thick section 3 in the middle part of body 2 and lay respectively at female adapter section 1 and the male connection section 4 at body 2 two ends, is all formed with the hardened layer of certain thickness and the width formed by intermediate frequency heat treatment on the surface of described female adapter section 1, male connection section 4 and thick section 3.
Particularly, the length of the hardened layer of described female adapter section 1 and male connection section 4 is 230-300mm, start inwardly from distance circular bead surface 300mm place, internal and external screw thread junction 1,4 outer end respectively, extension inside male connection section 1,4, the thickness of the hardened layer of described interior, nipple section 1,4 is 6-7mm.
The length of the hardened layer of described thick section 3 is whole thick section 3 length except each 50mm in these two ends, thick section 3, and the thickness of the hardened layer of this thick section 3 is 2-3mm.
Body 2, thick section, middle part 3, female adapter section 1 and male connection section 4 are integrally formed, described female adapter section 1, thick section, middle part 3 and male connection section 4 carry out surperficial intermediate frequency heat treatment, its surface is made to produce the hardened layer of certain depth and width, thus enhance the abrasion resistance on heavy weight drill pipe surface, reduce the heavy wear phenomenon of heavy weight drill pipe, extend the application life of heavy weight drill pipe.
Claims (3)
1. a wear-resistant heavy weight drill pipe, comprise body (2), be positioned at the thick section (3) at body (2) middle part and lay respectively at female adapter section (1) and the male connection section (4) at body (2) two ends, it is characterized in that: the hardened layer being all formed with certain thickness and the width formed by intermediate frequency heat treatment on the surface of described female adapter section (1), male connection section (4) and thick section (3).
2. wear-resistant heavy weight drill pipe according to claim 1, it is characterized in that: the length of the hardened layer of described female adapter section (1) and male connection section (4) is 230 ~ 300mm, inside from distance internal and external screw thread junction (1,4) circular bead surface 300mm place, male connection section (1,4) inner side extends respectively, and the thickness of the hardened layer of described internal and external screw thread junction (1,4) is 6 ~ 7mm.
3. wear-resistant heavy weight drill pipe according to claim 1, it is characterized in that: the length of the hardened layer of described thick section (3) is whole thick section (3) length except this thick section (3) two ends 50mm, the thickness of the hardened layer of this thick section (3) is 2 ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520139108.9U CN204646128U (en) | 2015-03-11 | 2015-03-11 | Wear-resistant heavy weight drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520139108.9U CN204646128U (en) | 2015-03-11 | 2015-03-11 | Wear-resistant heavy weight drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646128U true CN204646128U (en) | 2015-09-16 |
Family
ID=54098891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520139108.9U Expired - Fee Related CN204646128U (en) | 2015-03-11 | 2015-03-11 | Wear-resistant heavy weight drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204646128U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461158A (en) * | 2017-08-31 | 2017-12-12 | 山西风雷钻具有限公司 | High strength friction welds heavy weight drill pipe |
| CN110628994A (en) * | 2019-10-30 | 2019-12-31 | 澳普洛钻探工具(无锡)有限公司 | Production process of sealing drill rod |
-
2015
- 2015-03-11 CN CN201520139108.9U patent/CN204646128U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461158A (en) * | 2017-08-31 | 2017-12-12 | 山西风雷钻具有限公司 | High strength friction welds heavy weight drill pipe |
| CN110628994A (en) * | 2019-10-30 | 2019-12-31 | 澳普洛钻探工具(无锡)有限公司 | Production process of sealing drill rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210715 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 |