CN103452493A - Special resistance-welding composite sulfur-resistant drill rod and method for manufacturing same - Google Patents
Special resistance-welding composite sulfur-resistant drill rod and method for manufacturing same Download PDFInfo
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- CN103452493A CN103452493A CN2013104390717A CN201310439071A CN103452493A CN 103452493 A CN103452493 A CN 103452493A CN 2013104390717 A CN2013104390717 A CN 2013104390717A CN 201310439071 A CN201310439071 A CN 201310439071A CN 103452493 A CN103452493 A CN 103452493A
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Abstract
The invention discloses a special resistance-welding composite sulfur-resistant drill rod and a method for manufacturing the same. The special resistance-welding composite sulfur-resistant drill rod comprises a drill rod body and a stainless steel pipe. The diameter of the stainless steel pipe is smaller than the inner diameter of a water hole of a male connector of the drill rod body by 0.1-0.3mm, the wall thickness of the stainless steel pipe is 0.5-2mm, the stainless steel pipe is inserted into the drill rod body and clings onto the inner wall of the drill rod body by means of diameter expansion, and then the drill rod body and an end of the stainless steel pipe are hermetically welded, so that the inner wall of the drill rod body is protected. Compared with the prior art, the special resistance-welding composite sulfur-resistant drill rod and the method have the advantages that the diameter of the stainless steel pipe is expanded in a hydraulic mode or a hydrostatic pressure mode or a mechanical mode, so that the composite pipe with the stainless steel pipe and the drill rod body is safe and mild, the surface of the inner wall of the drill rod cannot be damaged, and an excellent corrosion protection effect can be realized; owing to the composite pipe with the drill rod body and the stainless steel pipe, the inner wall of the drill rod is uniform and controllable and is prevented from falling as compared with a coating, and the service pressure is stable; the special resistance-welding composite sulfur-resistant drill rod is high-temperature-resistant, abrasion-resistant and corrosion-resistant; the surface of the special resistance-welding composite sulfur-resistant drill rod is smooth, abrasion is reduced, the flowing efficiency is greatly improved, and the service life of the drill rod is prolonged.
Description
Technical field
The present invention relates to the metal composite pipe technical field, be specifically related to a kind of extraordinary welding resistance composite sulfur resisting drilling rod and manufacture method thereof.
Background technology
Along with the development of market economy, the further increasing of energy demand, the raising of petroleum resources exploration engineering, more deeply, more complicated oil gas field is explored, and the petroleum equipment technical requirements is also mentioned to new step.Original drilling equipment is more shallow because of geology, and lower to the drilling rod requirement, corrosivity is less.Along with the raising of petroleum resources exploration engineering, more darker, mordant oil gas fields are found and exploit, and to also raising of drilling equipment requirement in the past, the corrosion of drilling rod is also more serious.
At present the drilling well personnel of troop are more deeply, adopt the undercoating mode to be protected the drilling rod inner wall corrosion in more complicated drilling well.The undercoating mode has two kinds: a kind of is the paint coatings mode; A kind of is the electroplated coating mode.Wherein the paint coatings mode is used the most extensive.Complicated because of present hole condition, the most of oil gas field is containing H
2s, CO
2, the multiple corrosion composition such as Cr is more and more, wherein with H
2s, CO
2corrosion while coexisting is the most general, and process is the most complicated and harsh, causes drilling engineering technician's very big concern, so proposed especially anticorrosive, non-oxidizability, the condition such as high temperature resistant when the buying drilling rod.For drilling rod corrosion-prone requirement in drilling; petroleum equipment research staff and producers' joint development in recent years; work out a variety of protection drilling rod inwalls and be not subject to caustic solution; all classify as the undercoating method; kind is a lot; wherein extensive with epoxide powder coating research, as the 3M company of the U.S. and Japanese Co., Ltd. of Sumitomo Metal Industries etc. are all the manufacturers of world-renowned epoxy powder.The popularization of this invention, because making the drilling rod inner wall surface smooth, the advantages such as frictional resistance that reduce drilling fluid in the drilling process have obtained good utilization on market, have also improved greatly the application life of anticorrosion drilling rod, have alleviated to a certain extent the etching problem in oil field.But, because profile depth is more shallow, in the complex hole condition operation, drilling rod inwall abrasion resistance or poor, at high temperature easily produce dropping situations, so can not reach the effect of permanent use.The electroplated coating method is to be combined with metal by the electrolytic ion element; but this mode easily causes surperficial small pit defect and produces; in the drilling well use procedure, the effect that paint coatings protection drilling rod inwall is not played by forms of corrosion relatively is slightly poor, applies also corresponding less.
Further expansion in petroleum drilling and mining industry, the difference differences such as each oil field stratum condition, brought difficulty to the generally popularization of aseptic technic, though the anticorrosion way of the drilling rod of prior art has obtained certain effect, produced very large benefit, but still there are non-refractory, not wear-resisting, incomplete anticorrosion, the easy not enough problem such as aging, can't meet the requirement of specific Oil Field production and application, study deep systematicness and also lack.
Summary of the invention
Purpose of the present invention is exactly the defect existed for prior art, a kind of operation under complex hole condition that can be used for is provided, play high temperature resistant, wear-resisting, corrosion-resistant, do not come off, the texts that do not lose efficacy, a kind of extraordinary welding resistance composite sulfur resisting drilling rod and the manufacture method thereof that extend drilling life of drill pipe.
Its technical scheme is: a kind of extraordinary welding resistance composite sulfur resisting drilling rod; comprise drilling rod body and stainless steel tube; the diameter of described stainless steel tube is less than drilling rod body male joint hydrophthalmia internal diameter 0.1-0.3mm; wall thickness is 0.5～2mm; stainless steel tube is inserted in the drilling rod body; and by hole enlargement, stainless steel tube is close on the drilling rod inner body wall, then welded seal is carried out in the end of drilling rod body and stainless steel tube, protection drilling rod inner body wall.
Wherein, described stainless steel tube is close on the drilling rod inner body wall by hydraulic way, hydrostatic pressing mode or mechanical system hole enlargement.The end of described drilling rod body and stainless steel tube is carried out welded seal by resistance seam welding or brazing mode to the end of bi-material.
4, a kind of manufacture method of extraordinary welding resistance composite sulfur resisting drilling rod, technological process is as follows:
1) the drilling rod inner body wall need be through preheating, interior ball blast derusting by sandblasting dedusting, the clean process of air purge, the drilling rod inner wall cleaning is smooth clean.Stainless steel pipe surface is smooth clean;
2) by two kinds of surfacings, clean materials in the tube assembling together, is about to the stainless steel tube drilling rod body interior of packing into,
Adopt the modes such as hydraulic way, hydrostatic pressing mode or mechanical system hole enlargement to be pressurizeed to drilling rod body and stainless steel tube, when pressure reaches the maximum stress value of permission, and pressurize 5-20 minutes, so that stainless steel tube reaches and is close to the drilling rod inner body wall;
3) use the resistance seam welding mode that stainless steel tube and the roll welding of drilling rod body be close in the drilling rod inwall are carried out firmly closely, from the drilling rod end to end, adopt spiral roll welding, the roll welding welding bead is the way step-by-step system, and its welding bead spacing is 100-200mm.
4) drilling pressure required according to API 7G carries out repeatedly repetition test, make the effective incremental portion of run of steel, whether visually observe stainless steel tube in the inwall of two ends changes, the new product of being close to drilling rod inwall stainless steel tube is carried out to dimension control and nondestructive testing, guarantee that new product meets the correlation technique requirement;
5) by hole enlargement, good stainless steel tube carries out mechanical test and Metallographic Analysis, detect new product and must meet the identical grade of steel mechanical property requirements of API 5DP drilling rod, the resistance seam welding junction is firmly tight, zero defect, stainless steel tube is subject under large pressure condition at the drilling rod body, do not produce the microplasticity distortion, guarantee that weld seam does not break away from, complete the requirement of bimetallic composite drill rod.
The present invention compared with prior art, has following advantage: 1, adopt stainless steel tube and the drilling rod body clad pipe of hydraulic way, hydrostatic pressing mode or mechanical system hole enlargement safe, gentle, can not damage the drilling rod inner wall surface, play good corrosion protection; 2, drilling rod body and stainless steel tube clad pipe can guarantee that the drilling rod inwall is more even, controlled with respect to coating, not come off, and working pressure is stable; 3, there is high temperature resistant, abrasion resistance and corrosion resistance; 4, smooth surface, reduce wear, and greatly improves flow efficiency, extends drilling life of drill pipe.
The accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention.
The specific embodiment
With reference to Fig. 1; a kind of extraordinary welding resistance composite sulfur resisting drilling rod; comprise drilling rod body 1 and stainless steel tube 2; the diameter of described stainless steel tube 2 is less than drilling rod body 1 male joint hydrophthalmia internal diameter 0.1-0.3mm; wall thickness is 0.5～2mm, and stainless steel tube 2 is inserted in drilling rod body 1, and by hole enlargement, stainless steel tube is close in the drilling rod body on 1 wall; again welded seal is carried out in the end 3 of drilling rod body 1 and stainless steel tube 2, protection drilling rod body 1 inwall.Wherein, described stainless steel tube 2 is close on drilling rod body 1 inwall by hydraulic way, hydrostatic pressing mode or mechanical system hole enlargement.The end 3 of described drilling rod body 1 and stainless steel tube 2 is carried out welded seal by resistance seam welding or brazing mode to the end of bi-material.
A kind of manufacture method of extraordinary welding resistance composite sulfur resisting drilling rod, technological process is as follows:
1) the drilling rod inner body wall need be through preheating, interior ball blast derusting by sandblasting dedusting, the clean process of air purge, the drilling rod inner wall cleaning is smooth clean.Stainless steel pipe surface is smooth clean;
2) by two kinds of surfacings, clean materials in the tube assembling together, is about to the stainless steel tube drilling rod body interior of packing into,
Adopt the modes such as hydraulic way, hydrostatic pressing mode or mechanical system hole enlargement to be pressurizeed to drilling rod body and stainless steel tube, when pressure reaches the maximum stress value of permission, and pressurize 5-20 minutes, so that stainless steel tube reaches and is close to the drilling rod inner body wall;
3) use the resistance seam welding mode that stainless steel tube and the roll welding of drilling rod body be close in the drilling rod inwall are carried out firmly closely, from the drilling rod end to end, adopt spiral roll welding, the roll welding welding bead is the way step-by-step system, and its welding bead spacing is 100-200mm;
4) drilling pressure required according to API 7G carries out repeatedly repetition test, make the effective incremental portion of run of steel, whether visually observe stainless steel tube in the inwall of two ends changes, the new product of being close to drilling rod inwall stainless steel tube is carried out to dimension control and nondestructive testing, guarantee that new product meets the correlation technique requirement;
5) by hole enlargement, good stainless steel tube carries out mechanical test and Metallographic Analysis, detect new product and must meet the identical grade of steel mechanical property requirements of API 5DP drilling rod, the resistance seam welding junction is firmly tight, zero defect, stainless steel tube is subject under large pressure condition at the drilling rod body, do not produce the microplasticity distortion, guarantee that weld seam does not break away from, complete the requirement of bimetallic composite drill rod.
Embodiment mono-
A kind of extraordinary welding resistance composite sulfur resisting drilling rod; comprise drilling rod body 1 and stainless steel tube 2; the diameter of described stainless steel tube 2 is less than drilling rod body 1 male joint hydrophthalmia internal diameter 0.2mm; wall thickness is 1mm; stainless steel tube 2 is inserted in drilling rod body 1; and by the hole enlargement of hydrostatic pressing mode, stainless steel tube is close in the drilling rod body on 1 wall, then the resistance seam welding sealing is carried out in the end 3 of drilling rod body 1 and stainless steel tube 2, protection drilling rod body 1 inwall.
A kind of manufacture method of extraordinary welding resistance composite sulfur resisting drilling rod, technological process is as follows:
1) the drilling rod inner body wall need be through preheating, interior ball blast derusting by sandblasting dedusting, the clean process of air purge, the drilling rod inner wall cleaning is smooth clean.Stainless steel pipe surface is smooth clean;
2) by two kinds of surfacings, clean materials in the tube assembling together, is about to the stainless steel tube drilling rod body interior of packing into,
Adopt the hole enlargement of hydrostatic pressing mode to be pressurizeed to the intrinsic stainless steel tube of drilling rod, when pressure reaches the maximum stress value of permission, and pressurize 15 minutes, so that reaching, stainless steel tube is close to the drilling rod inner body wall;
3) use the resistance seam welding mode that stainless steel tube and the roll welding of drilling rod body be close in the drilling rod inwall are carried out firmly closely, from the drilling rod end to end, adopt spiral roll welding, the roll welding welding bead is the way step-by-step system, and its welding bead spacing is 150mm;
4) drilling pressure required according to API 7G carries out repeatedly repetition test, make the effective incremental portion of run of steel, whether visually observe stainless steel tube in the inwall of two ends changes, the new product of being close to drilling rod inwall stainless steel tube is carried out to dimension control and nondestructive testing, guarantee that new product meets the correlation technique requirement;
5) by hole enlargement, good stainless steel tube carries out mechanical test and Metallographic Analysis, detect new product and must meet the identical grade of steel mechanical property requirements of API 5DP drilling rod, the resistance seam welding junction is firmly tight, zero defect, stainless steel tube is subject under large pressure condition at the drilling rod body, do not produce the microplasticity distortion, guarantee that weld seam does not break away from, complete the requirement of bimetallic composite drill rod.
Embodiment bis-
A kind of extraordinary welding resistance composite sulfur resisting drilling rod; comprise drilling rod body 1 and stainless steel tube 2; the diameter of described stainless steel tube 2 is less than drilling rod body 1 male joint hydrophthalmia internal diameter 0.3mm; wall thickness is 2mm; stainless steel tube 2 is inserted in drilling rod body 1; and by the hydraulic way hole enlargement, stainless steel tube is close in the drilling rod body on 1 wall, then the resistance seam welding sealing is carried out in the end 3 of drilling rod body 1 and stainless steel tube 2, protection drilling rod body 1 inwall.
A kind of manufacture method of extraordinary welding resistance composite sulfur resisting drilling rod, technological process is as follows:
1) the drilling rod inner body wall need be through preheating, interior ball blast derusting by sandblasting dedusting, the clean process of air purge, the drilling rod inner wall cleaning is smooth clean.Stainless steel pipe surface is smooth clean;
2) by two kinds of surfacings, clean materials in the tube assembling together, is about to the stainless steel tube drilling rod body interior of packing into,
Adopt the hydraulic way hole enlargement to be pressurizeed to the intrinsic stainless steel tube of drilling rod, when pressure reaches the maximum stress value of permission, and pressurize 5 minutes, so that reaching, stainless steel tube is close to the drilling rod inner body wall;
3) use the resistance seam welding mode that stainless steel tube and the roll welding of drilling rod body be close in the drilling rod inwall are carried out firmly closely, from the drilling rod end to end, adopt spiral roll welding, the roll welding welding bead is the way step-by-step system, and its welding bead spacing is 100mm;
4) drilling pressure required according to API 7G carries out repeatedly repetition test, make the effective incremental portion of run of steel, whether visually observe stainless steel tube in the inwall of two ends changes, the new product of being close to drilling rod inwall stainless steel tube is carried out to dimension control and nondestructive testing, guarantee that new product meets the correlation technique requirement;
5) by hole enlargement, good stainless steel tube carries out mechanical test and Metallographic Analysis, detect new product and must meet the identical grade of steel mechanical property requirements of API 5DP drilling rod, the resistance seam welding junction is firmly tight, zero defect, stainless steel tube is subject under large pressure condition at the drilling rod body, do not produce the microplasticity distortion, guarantee that weld seam does not break away from, complete the requirement of bimetallic composite drill rod.
Claims (5)
1. an extraordinary welding resistance composite sulfur resisting drilling rod; comprise drilling rod body and stainless steel tube; it is characterized in that: the diameter of described stainless steel tube is less than drilling rod body male joint hydrophthalmia internal diameter 0.1-0.3mm; wall thickness is 0.5～2mm; stainless steel tube is inserted in the drilling rod body; and by hole enlargement, stainless steel tube is close on the drilling rod inner body wall, then welded seal is carried out in the end of drilling rod body and stainless steel tube, protection drilling rod inner body wall.
2. a kind of extraordinary welding resistance composite sulfur resisting drilling rod according to claim 1, it is characterized in that: described stainless steel tube is close on the drilling rod inner body wall by hydraulic way, hydrostatic pressing mode or mechanical system hole enlargement.
3. a kind of extraordinary welding resistance composite sulfur resisting drilling rod according to claim 1, it is characterized in that: the end of described drilling rod body and stainless steel tube is carried out welded seal by resistance seam welding or brazing mode to the end of bi-material.
4. the manufacture method of an extraordinary welding resistance composite sulfur resisting drilling rod, it is characterized in that: technological process is as follows:
1) the drilling rod inner body wall need be through preheating, interior ball blast derusting by sandblasting dedusting, the clean process of air purge, the drilling rod inner wall cleaning is smooth clean.
5. stainless steel pipe surface is smooth clean;
2) by two kinds of surfacings, clean materials in the tube assembling together, is about to the stainless steel tube drilling rod body interior of packing into,
Adopt the modes such as hydraulic way, hydrostatic pressing mode or mechanical system hole enlargement to be pressurizeed to drilling rod body and stainless steel tube, when pressure reaches the maximum stress value of permission, and pressurize 5-20 minutes, so that stainless steel tube reaches and is close to the drilling rod inner body wall;
3) use the resistance seam welding mode that stainless steel tube and the roll welding of drilling rod body be close in the drilling rod inwall are carried out firmly closely, from the drilling rod end to end, adopt spiral roll welding, the roll welding welding bead is the way step-by-step system, and its welding bead spacing is 100-200mm;
4) drilling pressure required according to API 7G carries out repeatedly repetition test, make the effective incremental portion of run of steel, whether visually observe stainless steel tube in the inwall of two ends changes, the new product of being close to drilling rod inwall stainless steel tube is carried out to dimension control and nondestructive testing, guarantee that new product meets the correlation technique requirement;
5) by hole enlargement, good stainless steel tube carries out mechanical test and Metallographic Analysis, detect new product and must meet the identical grade of steel mechanical property requirements of API 5DP drilling rod, the resistance seam welding junction is firmly tight, zero defect, stainless steel tube is subject under large pressure condition at the drilling rod body, do not produce the microplasticity distortion, guarantee that weld seam does not break away from, complete the requirement of bimetallic composite drill rod.
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| CN201310439071.7A CN103452493B (en) | 2013-09-25 | 2013-09-25 | A kind of manufacture method of extraordinary welding resistance composite sulfur resisting drilling rod |
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| CN201310439071.7A CN103452493B (en) | 2013-09-25 | 2013-09-25 | A kind of manufacture method of extraordinary welding resistance composite sulfur resisting drilling rod |
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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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436118A (en) * | 1977-07-25 | 1984-03-13 | Smith International, Inc. | Sleeved drill pipe |
| US4458404A (en) * | 1977-07-25 | 1984-07-10 | Smith International, Inc. | Method of making sleeved drill pipe |
| CN102506236A (en) * | 2011-10-21 | 2012-06-20 | 唐勇 | Bimetallic mechanical compound wear-resistant steel pipe and manufacturing method thereof |
| CN102794601A (en) * | 2011-05-23 | 2012-11-28 | 周照耀 | Method for manufacturing wear-resistant, corrosion-resistant and impact-resistant double-metal composite bend pipe |
| EP2584137A2 (en) * | 2011-10-21 | 2013-04-24 | Weatherford/Lamb Inc. | Wear and buckling resistant drill pipe and repair methods |
-
2013
- 2013-09-25 CN CN201310439071.7A patent/CN103452493B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436118A (en) * | 1977-07-25 | 1984-03-13 | Smith International, Inc. | Sleeved drill pipe |
| US4458404A (en) * | 1977-07-25 | 1984-07-10 | Smith International, Inc. | Method of making sleeved drill pipe |
| CN102794601A (en) * | 2011-05-23 | 2012-11-28 | 周照耀 | Method for manufacturing wear-resistant, corrosion-resistant and impact-resistant double-metal composite bend pipe |
| CN102506236A (en) * | 2011-10-21 | 2012-06-20 | 唐勇 | Bimetallic mechanical compound wear-resistant steel pipe and manufacturing method thereof |
| EP2584137A2 (en) * | 2011-10-21 | 2013-04-24 | Weatherford/Lamb Inc. | Wear and buckling resistant drill pipe and repair methods |
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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| CN103452493B (en) | 2017-06-13 |
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Effective date of registration: 20200916 Address after: No.56 Shengxing Road, Kenli District, Dongying City, Shandong Province Patentee after: Shandong Mingzhu drilling tools Co.,Ltd. Address before: 257000 Shandong Dongying County Economic Development Zone, Kenli province wins Road East head Patentee before: SHANDONG MINGZHU PETROLEUM EQUIPMENT Co.,Ltd. |
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