CN105317385A - Wear-resistant oil drill pipe joint and production method thereof - Google Patents
Wear-resistant oil drill pipe joint and production method thereof Download PDFInfo
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- CN105317385A CN105317385A CN201410364977.1A CN201410364977A CN105317385A CN 105317385 A CN105317385 A CN 105317385A CN 201410364977 A CN201410364977 A CN 201410364977A CN 105317385 A CN105317385 A CN 105317385A
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Abstract
The invention relates to a novel wear-resistant oil drill pipe joint and a production method thereof. The drill pipe joint comprises a main male joint body and a main female joint body, wherein a wear-resistant layer is arranged on the outer surface of a thick section C of the main male joint body, a wear-resistant layer is arranged on part of a conical transition section B', a thick section C' and a connection section D' of the main female joint body, each wear-resistant layer comprises two surfacing layers E connecting the main joint bodies and 5-10 spray-welding layers F connecting the surfacing layers E, and the surfacing layers E on surfaces where the surfacing layers E and the spray-welding layers F are connected are machined into the saw-tooth shape. The production method of the joint comprises steps as follows: the main joint bodies of a drill pipe are produced; two surfacing layers E are formed on the surface of each main joint body through surfacing; heat treatment is performed on workpieces subjected to surfacing; turning is performed on surfaces of the surfacing layers E and the surfacing layers E are machined into the saw-tooth shape; 5-10 spray-welding layers F are formed on the treated workpiece surfaces through spray-welding; high spots on the surfaces after joint spray-welding are removed, and the whole is polished to be flat and smooth; internal hole punching, turn-milling and thread machining are performed on the workpieces; finally, magnetic powder and ultrasonic flaw detection treatment is performed. The whole joint surface is treated with multiple surface treatment methods, and properties such as wear resistance, corrosion resistance and the like of wear-resistant belts are optimized.
Description
Technical field
The present invention relates to oil drilling equipment field, especially relate to a kind of novel wear-resisting joint of petroleum drill rod and manufacture method thereof.
Background technology
Joint of petroleum drill rod is the pith that oil drill rocker connects, and its condition of work very severe, stressing conditions is very complicated.
Along with oil drilling is more and more darker, and occur inclined shaft, the joint of current local surfacing wear-resistant strip cannot meet instructions for use, and in the process of recovering the oil, sleeve pipe directly contacts with joint matrix surface, and has relative motion, causes the joint life-span to be reduced greatly.In order to solve the problem, people adopt the whole surfaces of kinds of surface processing method butt joint such as optimizing wear-resistant strip abrasion resistance, corrosion resistance to process usually, increase its active time, tool joint, in normal operation engineering, is usually rubbed, bending, reverse, the multiple stress condition such as external and internal pressure, and environment composition is complicated, operation through height of being everlasting corrodes when.
Oil is strategic resource, the blood vessels of industry, national governments all pay much attention to the production of petroleum-based energy, but along with the exploitation in modern age, shallow oil resource is substantially exhausted, so what will face now is deep & ultra-deep well, the especially appearance of inclined shaft, so have higher requirement to joint of petroleum drill rod.In drilling process, drill string comes in contact with internal surface of sleeve pipe to produce in the wellbore and rubs, and moment of torsion and friction are increased, and the effect of attrition of tool joint to sleeve pipe is maximum, because the diameter of tool joint larger than drilling rod body 20% ~ 30%, be easy to contact with internal surface of sleeve pipe and wear sleeve.When contact force is enough large, the lubrication of lubricating film disappears completely, and tool joint and internal surface of sleeve pipe directly contact and create dry friction.
In friction process, the wearing and tearing of tool joint are very serious, and accidental collision just may make tool joint produce fracture; Meanwhile, the wearing and tearing of tool joint also make casing wall thickness thinning, and resistance to collapse decreases.If underestimate this, likely therefore cause the early time discards of drilling failure or Oil/gas Well, cause huge loss to oil field.
Research shows, drill string does not make tool joint be the main cause causing casing wear with the mutual friction of internal surface of sleeve pipe phase in wellbore construction between two parties, and drill string be not between two parties in drilling process inevitably.Therefore, key and core that CONTACT WITH FRICTION between drilling rod and sleeve pipe or friction factor are abrasionproofs how is reduced as seen.
Conventional drill joint wear-resistant strip is the wear-resistant strip welding three two centimetres of wide left and right at joint, fuses on tool joint surface as bumps, comes, with the material of sleeve friction, to serve certain protective effect to tool joint in order to replace tool joint; Because the hardness of wear-resistant strip is lower than drilling rod itself, therefore, certain protective effect is served to sleeve pipe; Such protection can meet the requirement of original straight well; wear-resistant strip can protect tool joint; but; but along with oil drilling is more and more darker; the appearance of a lot of inclined shaft now; said structure cannot play the effect of general protection, and the joint of current local surfacing wear-resistant strip cannot meet instructions for use.In deep & ultra-deep well exploration process, due to the existence of the factors such as radial load, whirling motion, oscillation crosswise, along with the growth of drilling time, the lateral force that drill string acts on internal surface of sleeve pipe increases, and causes the problem of sleeve pipe and tool joint wearing and tearing more and more serious.Cause that main cause that drilling tool wear-resistant band lost efficacy has the underground working of stratum abrasiveness, drilling rod, the impact with surfacing technique selected by high-abrasive material.
summary of the invention
The object of the invention is to be unsuitable for inclined shaft working condition for traditional wear-resistant strip abrasion resistance, reduce the problem of drilling efficiency and raising drilling cost, there is provided a kind of simple and reasonable, overall wear resistance and the corrosion resistance of joint are high, long service life, be suitable for the wear-resisting joint of petroleum drill rod of current inclined shaft job requirements, another object of the present invention is to provide a kind of manufacture method of wear-resisting joint of petroleum drill rod.
The object of the present invention is achieved like this, this tool joint comprises male joint main body and female joint main body, described male joint main body comprises thin segment A, tapering transition section B, thick section C and linkage section D from left to right successively, and described female joint main body comprises thin segment A from right to left successively
', tapering transition section B
', thick section C
'with linkage section D
'; The center of described male joint main body and female joint main body is with through hole, and the linkage section D of described male joint main body is with externally threaded tapered protrusion, the linkage section D of described female joint main body
'be band female conical socket, described male joint main body and female joint main body are threaded togather by tapered protrusion and conical socket, the thick section C external surface of described male joint main body with wearing layer, the part conic changeover portion B of described female joint main body
', thick section C
'with linkage section D
'on with wearing layer.
Described wearing layer is made up of with 5 ~ 10 layers of spray-welding coating F being connected overlay cladding E the two-layer overlay cladding E of jointing main body, wherein processed indentation on the overlay cladding E of overlay cladding E and spray-welding coating F joint face.
A manufacture method for wear-resisting joint of petroleum drill rod, the method comprises the following steps:
1., adopt 4145H steel to make fillet of tool joint pins main body and female joint main body according to Api (U.S.) oil drill rocker standard, male joint main body and female joint main body are solid cylinder clavate shape.
2., the two-layer overlay cladding E of iron-based flux-cored wire built-up welding is adopted, overlay cladding E thickness 1.5-4mm on the surface of male joint main body and female joint main body.
3. the workpiece, to step 2. piling postwelding is heat-treated, to eliminate welding stress, concrete steps are as follows:
(1) quench: a, well formula glowing furnace is warming up to 860 DEG C, joint shove charge, heating, is incubated 60 minutes; B, first 5 minutes stirring quenching liquids of coming out of the stove, quenching liquid is the AQ364 aqueous solution, and temperature is adjusted to 34 DEG C ~ 38 DEG C; C, joint hang out burner hearth, enter quenching liquid fast in 10 seconds, and do circumference rotation, are at least 10 minutes cool time;
(2) tempering: well formula tempering furnace is warming up to 580 DEG C, joint shove charge, starts blower fan, and heating, is incubated 120 ~ 180 minutes; Again joint is hung out burner hearth, be cooled to normal temperature.
4., turning overlay cladding E surface, ensure overlay cladding E thickness 1.5-4mm, and be processed into the zigzag meeting surfacing requirement, to increase the adhesion between overlay cladding E and spray-welding coating F, roughness requirements is at Ra6.3-Ra0.4.
5., 4. step is processed after surface of the work carry out surfacing process, obtain 5 ~ 10 layers of spray-welding coating F, spray-welding coating F thickness 0.5-2.5mm.
6., in order to reduce the frictional force of joint and sleeve pipe, removed by the surface height point after joint surfacing, entirety polishes flat smooth, improves surface roughness Ra 25-Ra0.4.
7. the workpiece that, effects on surface process completes carries out inner punching, turnning and milling screw thread process.
8., finally magnetic powder inspection is carried out, ultrasonic testing/ ultrasonic examination process.
The present invention has the following advantages and good effect:
1, structure of the present invention is to meet now novel drilling model; the appearance of inclined shaft; the drilling rod protection of original wear-resistant strip pattern can not meet new Service Environment; inclined shaft operation can be worn and torn entirety; be not the place of wear-resistant strip, so in order to better protection, whole joint entirety protected; utilize the high-abrasive material newly developed to adopt metalwork butt joint entirety to process, play a protective role.
2, the present invention adopts kinds of surface processing method butt joint surface integral to process, and optimizes the performances such as wear-resistant strip abrasion resistance, corrosion resistance.
3, the structure of the present invention to original tool joint is improved, and carry out integral protection, length of service is longer, and abrasion environment that can be new in the face of all down-holes,
4, the present invention is that the whole surface of butt joint processes, and checks and accepts application life, is suitable for the requirement of inclined shaft and more heavy duty service operating mode.
Accompanying drawing explanation
Fig. 1 is wear-resisting joint of petroleum drill rod overall structure schematic diagram.
Fig. 2 is male joint agent structure schematic diagram of the present invention.
Fig. 3 is female joint agent structure schematic diagram of the present invention.
Fig. 4 is I place's structure for amplifying schematic diagram at wearing layer position of the present invention.
Detailed description of the invention
Shown in accompanying drawing 1,2,3: this tool joint comprises male joint main body 1 and female joint main body 2, described male joint main body 1 comprises thin segment A, tapering transition section B, thick section C and linkage section D from left to right successively, and described female joint main body 2 comprises thin segment A from right to left successively
', tapering transition section B
', thick section C
'with linkage section D
'; The center of described male joint main body 1 and female joint main body 2 is with through hole 3, and the linkage section D of described male joint main body 1 is with externally threaded tapered protrusion 4, the linkage section D of described female joint main body 2
'it is the female conical socket 5 of band, described male joint main body 1 and female joint main body 2 are threaded togather by tapered protrusion 4 and conical socket 5, the thick section C external surface of described male joint main body 1 with wearing layer 6, the part conic changeover portion B of described female joint main body 2
', thick section C
'with linkage section D
'on with wearing layer 6.
Shown in accompanying drawing 4: described wearing layer 6 is made up of with 5 ~ 10 layers of spray-welding coating F being connected overlay cladding E the two-layer overlay cladding E of jointing main body, wherein processed indentation on the overlay cladding E of overlay cladding E and spray-welding coating F joint face, the thickness of described overlay cladding E is 1.5-4mm, and the thickness of spray-welding coating F is 0.5-2.5mm.
1., adopt 4145H steel to make fillet of tool joint pins main body 1 and female joint main body 2 according to Api (U.S.) oil drill rocker standard, male joint main body 1 and female joint main body 2 are solid cylinder clavate shape.
2., the two-layer overlay cladding E of iron-based flux-cored wire built-up welding is adopted, overlay cladding E thickness 1.5-4mm on the surface of male joint main body 1 and female joint main body 2.
3. the workpiece, to step 2. piling postwelding is heat-treated, to eliminate welding stress, concrete steps are as follows:
(1) quench: a, well formula glowing furnace is warming up to 860 DEG C, joint shove charge, heating, is incubated 60 minutes; B, first 5 minutes stirring quenching liquids of coming out of the stove, quenching liquid is the AQ364 aqueous solution, and temperature is adjusted to 34 DEG C ~ 38 DEG C; C, joint hang out burner hearth, enter quenching liquid fast in 10 seconds, and do circumference rotation, are at least 10 minutes cool time;
(2) tempering: well formula tempering furnace is warming up to 580 DEG C, joint shove charge, starts blower fan, and heating, is incubated 120 ~ 180 minutes; Again joint is hung out burner hearth, be cooled to normal temperature.
4., turning overlay cladding E surface, ensure overlay cladding E thickness 1.5-4mm, and be processed into the zigzag meeting surfacing requirement, to increase the adhesion between overlay cladding E and spray-welding coating F, roughness requirements is at Ra6.3-Ra0.4.
5., 4. step is processed after surface of the work carry out surfacing process, obtain 5 ~ 10 layers of spray-welding coating F, spray-welding coating F thickness 0.5-2.5mm.
6., in order to reduce the frictional force of joint and sleeve pipe, removed by the surface height point after joint surfacing, entirety polishes flat smooth, improves surface roughness Ra 25-Ra0.4.
7. the workpiece that, effects on surface process completes carries out inner punching, turnning and milling screw thread process.
8., finally magnetic powder inspection is carried out, ultrasonic testing/ ultrasonic examination process.
Claims (3)
1. a wear-resisting joint of petroleum drill rod, it is characterized in that: this tool joint comprises male joint main body (1) and female joint main body (2), described male joint main body (1) comprises thin segment (A), tapering transition section (B), thick section (C) and linkage section (D) from left to right successively, and described female joint main body (2) comprises thin segment (A '), tapering transition section (B '), thick section (C ') and linkage section (D ') from right to left successively, the center of described male joint main body (1) and female joint main body (2) is with through hole (3), the linkage section (D) of described male joint main body (1) is with externally threaded tapered protrusion (4), the linkage section (D ') of described female joint main body (2) is the female conical socket of band (5), described male joint main body (1) and female joint main body (2) are threaded togather by tapered protrusion (4) and conical socket (5), thick section (C) external surface of described male joint main body (1) is with wearing layer (6), the part conic changeover portion (B ') of described female joint main body (2), with wearing layer (6) on thick section (C ') and linkage section (D ').
2. the wear-resisting joint of petroleum drill rod of one according to claim 1, it is characterized in that: described wearing layer (6) is made up of with 5 ~ 10 layers of spray-welding coating (F) being connected overlay cladding (E) the two-layer overlay cladding (E) of jointing main body, wherein go up processed indentation at the overlay cladding (E) of overlay cladding (E) and spray-welding coating (F) joint face, the thickness of described overlay cladding (E) is 1.5-4mm, and the thickness of spray-welding coating (F) is 0.5-2.5mm.
3. a manufacture method for wear-resisting joint of petroleum drill rod, is characterized in that: the method comprises the following steps:
1., adopt 4145H steel to make fillet of tool joint pins main body (1) and female joint main body (2) according to Api (U.S.) oil drill rocker standard, male joint main body (1) and female joint main body (2) are solid cylinder clavate shape;
2., the iron-based two-layer overlay cladding of flux-cored wire built-up welding (E) is adopted, overlay cladding (E) thickness 1.5-4mm on the surface of male joint main body (1) and female joint main body (2);
3. the workpiece, to step 2. piling postwelding is heat-treated, to eliminate welding stress, concrete steps are as follows:
(1) quench: a, well formula glowing furnace is warming up to 860 DEG C, joint shove charge, heating, is incubated 60 minutes; B, first 5 minutes stirring quenching liquids of coming out of the stove, quenching liquid is the AQ364 aqueous solution, and temperature is adjusted to 34 DEG C ~ 38 DEG C; C, joint hang out burner hearth, enter quenching liquid fast in 10 seconds, and do circumference rotation, are at least 10 minutes cool time;
(2) tempering: well formula tempering furnace is warming up to 580 DEG C, joint shove charge, starts blower fan, and heating, is incubated 120 ~ 180 minutes; Again joint is hung out burner hearth, be cooled to normal temperature;
4., turning overlay cladding (E) surface, ensure overlay cladding (E) thickness 1.5-4mm, and be processed into the zigzag meeting surfacing requirement, to increase the adhesion between overlay cladding (E) and spray-welding coating (F), roughness requirements is at Ra6.3-Ra0.4;
5., 4. step is processed after surface of the work carry out surfacing process, obtain 5 ~ 10 layers of spray-welding coating (F), spray-welding coating (F) thickness 0.5-2.5mm;
6., in order to reduce the frictional force of joint and sleeve pipe, removed by the surface height point after joint surfacing, entirety polishes flat smooth, improves surface roughness Ra 25-Ra0.4;
7. the workpiece that, effects on surface process completes carries out inner punching, turnning and milling screw thread process;
8., finally magnetic powder inspection is carried out, ultrasonic testing/ ultrasonic examination process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364977.1A CN105317385A (en) | 2014-07-29 | 2014-07-29 | Wear-resistant oil drill pipe joint and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364977.1A CN105317385A (en) | 2014-07-29 | 2014-07-29 | Wear-resistant oil drill pipe joint and production method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105317385A true CN105317385A (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410364977.1A Pending CN105317385A (en) | 2014-07-29 | 2014-07-29 | Wear-resistant oil drill pipe joint and production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826120A (en) * | 2017-02-10 | 2017-06-13 | 江苏德圣能源环保设备工程有限公司 | The preparation method of aluminium alloy oil drill rocker |
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|---|---|---|---|---|
| CN1603429A (en) * | 2004-11-01 | 2005-04-06 | 江苏曙光石油钻具有限公司 | Heat treatment process for joint of petroleum drill rod |
| CN2809191Y (en) * | 2005-03-29 | 2006-08-23 | 江苏曙光石油钻具有限公司 | High seal and high strength petroleum drill rod joint |
| CN201071685Y (en) * | 2007-08-24 | 2008-06-11 | 格兰特（江苏）钻具有限公司 | Abrasion-proof belt structure for petroleum drill lever joint |
| CN102364034A (en) * | 2011-10-28 | 2012-02-29 | 江苏曙光石油钻采设备有限公司 | Petroleum drill rod joint outer wall same-base wear-resistant strip and thermal treatment process |
| CN202900059U (en) * | 2012-10-29 | 2013-04-24 | 中国石油化工股份有限公司 | Non-magnetic pressure bearing drilling rod |
-
2014
- 2014-07-29 CN CN201410364977.1A patent/CN105317385A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603429A (en) * | 2004-11-01 | 2005-04-06 | 江苏曙光石油钻具有限公司 | Heat treatment process for joint of petroleum drill rod |
| CN2809191Y (en) * | 2005-03-29 | 2006-08-23 | 江苏曙光石油钻具有限公司 | High seal and high strength petroleum drill rod joint |
| CN201071685Y (en) * | 2007-08-24 | 2008-06-11 | 格兰特（江苏）钻具有限公司 | Abrasion-proof belt structure for petroleum drill lever joint |
| CN102364034A (en) * | 2011-10-28 | 2012-02-29 | 江苏曙光石油钻采设备有限公司 | Petroleum drill rod joint outer wall same-base wear-resistant strip and thermal treatment process |
| CN202900059U (en) * | 2012-10-29 | 2013-04-24 | 中国石油化工股份有限公司 | Non-magnetic pressure bearing drilling rod |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826120A (en) * | 2017-02-10 | 2017-06-13 | 江苏德圣能源环保设备工程有限公司 | The preparation method of aluminium alloy oil drill rocker |
| CN106826120B (en) * | 2017-02-10 | 2018-09-14 | 江苏德圣能源环保设备工程有限公司 | The preparation method of aluminium alloy oil drill rocker |
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Application publication date: 20160210 |