CN102140611A - 135 steel-level drill rod connector and heat treatment process thereof - Google Patents
135 steel-level drill rod connector and heat treatment process thereof Download PDFInfo
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Abstract
The invention relates to a 135 steel-level drill rod connector and a heat treatment process thereof. The drill rod connector comprises the following components in percentage by weight: 0.25-0.32 percent of C, 0.30 percent of or less Si, 0.35-0.80 percent of Mn, 0.015 percent of or less P, 0.008 percent of or less S, 0.15-0.80 percent of Mo, 0.00-1.00 percent of Ni, 0.90-1.50 percent of Cr, 0.30 percent of or less Al, 0.05 percent of or less Nb, 0.10 percent of or less V and the balance of Fe and unavoidable trace elements. The heat treatment process comprises the steps of: heating a roughly processed connector blank to 920-960 DEG C from the room temperature, preserving heat for 0.5-1.5 hours, putting the connector blank into a high-grade oil base quenching medium at 30-50 DEG C, fully cooling the connector blank, then heating the connector blank to 550- 620 DEG C from the room temperature for 50-70 minutes, preserving heat for 1.5-2.5 hours, and then discharging the connector. After heat treatment, the mechanical performances are as follows: the yield strength is 140-160 Ksi (965-1100 MPa), the elongation percentage is larger than or equal to 17 percent, the drill rod connector is longitudinal and is at 20 DEG C below zero and has full size, and the charpy impact energy is higher than or equal to 100 Joules.
Description
Technical field
The present invention relates to a kind of drilling well particularly the high-intensity high-tenacity drill pipe sub and thermal treatment process thereof of deep-well and ultra deep well of being used for, joint of the present invention is 135 grade of steels, belongs to oil and gas drilling and production technology field.
Background technology
Along with the minimizing gradually of drilling technique development and the easy producing oil gas-bearing formation of shallow-layer, drilling depth is in continuous increase, and China will bore the ultra deep well of a large amount of 7000～8000m in recent years, and the deep-sea exploitation is also progressively moved towards in China's marine drilling.For can operation under this harsh hole condition, the oil field be wished and can be provided high strength, high tenacity drilling rod for it.And the highest grade of steel S-135 drilling rod that meets American Petroleum Institute (API) (API) regulation commonly used at present can't satisfy its requirement, Z-140, and the drilling rod of superstrength drilling rods such as V-150 grade of steel and 165 grade of steels is one of effective solutions.Oil drill rocker commonly used is to be formed by friction welding by drill pipe body, drill pipe sub.Herein, what 140,150 and 165 grade of steels were represented is the yield strength grade of body, and in order to mate with these high-strength drill pipe bodys, the grade of steel of joint also will rise to 135 grade of steels by original 120 grade of steels thereupon.In order to ensure the safe handling of drilling tool, grade of steel is high more, and the ballistic work of its coupling requires also just high more.
Test-results shows, joint material 37CrMnMo commonly used, and when its yield strength was 140-160Ksi(965～1100MPa) ,-20 ℃, ballistic work often had only about 50～60J, can't satisfy the performance requriements of 135 steel grade drill pipe joints.
Summary of the invention
The object of the invention is to provide a kind of 135 steel grade drill pipe joint steel, can overcome the existing described weak point of drill pipe sub material 37CrMnMo, its mechanical property is as follows: yield strength is 140～160Ksi(965～1100MPa), unit elongation 〉=17%, vertically,-20 ℃, full-scale, Charpy-V impact power 〉=100J.This joint can be used for 150 and 165 grade of steel high-strength drill pipes.
Described purpose is achieved by the following scheme:
A kind of 135 steel grade drill pipe joints are that the one-tenth by following weight per-cent is grouped into: C 0.25-0.32%, Si≤0.30%, Mn 0.35-0.80%, P≤0.015%, S≤0.008%, Mo 0.15-0.80%, Ni 0.00-1.00%, Cr 0.90-1.50%, Al≤0.03%, Nb≤0.05%, V≤0.10%, surplus are Fe and the trace elements that can not remove.
Preferably, above-mentioned 135 steel grade drill pipe joints are grouped into by the one-tenth of following weight per-cent: C 0.25-0.28%, Si 0.20-0.23%, Mn 0.45-0.50%, P 0.006%, S 0.004%, Mo 0.50-0.55%, Ni 0.55-0.60%, Cr 0.95-1.00%, Al 0.02%, V 0.08-0.10%, and surplus is Fe and the trace elements that can not remove.
Preferably, above-mentioned 135 steel grade drill pipe joints are grouped into by the one-tenth of following weight per-cent: C 0.26-0.30%, Si 0.26-0.28%, Mn 0.75-0.80%, P≤0.015%, S≤0.005%, Mo 0.70-0.80%, Cr 1.30-1.40%, Al 0.02%, Nb 0.03%, and surplus is Fe and the trace elements that can not remove.
Also preferably, above-mentioned 135 steel grade drill pipe joints are grouped into by the one-tenth of following weight per-cent: C 0.28-0.32%, Si 0.26-0.28%, Mn 0.70-0.76%, P≤0.015%, S≤0.005%, Mo 0.15-0.20%, Ni 0.90-1.00%, Cr 1.00-1.10%, Al 0.02%, and surplus is Fe and the trace elements that can not remove.
135 above-mentioned steel grade drill pipe joint thermal treatment process, rough machined described 135 steel grade drill pipe joint blanks were elevated to 920～960 ℃ with 80～100 minutes by room temperature, be incubated after 0.5～1.5 hour, put into 30～50 ℃ of oil base quenchants, and fully cooling, and then be elevated to 550～620 ℃ by room temperature with 50～70 minutes, come out of the stove after being incubated about 1.5～2.5 hours.After the thermal treatment, grain fineness number 〉=8.0 grade.
Beneficial effect of the present invention: compare with conventional joint material 37CrMnMo, the present invention (reduces C, Mn content by ingenious collocation alloying element, adjust Cr, Mo equal size, have a mind to add Ni, Nb and V etc.), under the prerequisite that guarantees joint hardening capacity, obtained good, stable mechanical property again, and, all production units for example forging equipment, heat treatment furnace etc. can adopt existing equipment, and the thermal treatment process wide ranges very easily realizes producing in batches.
Embodiment
By chemical ingredients requirement of the present invention, three heat steel have been refined.Continuous casting and rolling becomes satisfactory round steel respectively then.Round steel is cut into certain-length, forges into NC50 joint blank.Rough machined three batches of joints are respectively got 10 of 10 joints and same specification 37CrMnMo joints, heat-treat in batches, after the thermal treatment, chemical analysis, stretching and shock test are carried out in sampling.
Thermal treatment process of the present invention is: rough machined joint blank was elevated to 920～960 ℃ with 80～100 minutes by room temperature, be incubated after 0.5～1.5 hour, put into 30～50 ℃ of oil base quenchants, and fully cooling, and then be elevated to 550～620 ℃ by room temperature with 50～70 minutes, come out of the stove after being incubated about 1.5～2.5 hours.
Below joint material 37CrMnMo just commonly used and the joint of the present invention mechanical property (mean values of each 10 joint) that is processed into 135 steel grade drill pipe joints compare, its chemical ingredients (is weight percentage, surplus is an iron) see Table 1, its mechanical property sees Table 2.
As can be seen from Table 2, strength of joint of the present invention can be handled the level of 140～160Ksi, and its ballistic work up to 120J about, be 2 times of ordinary couplings.Joint of the present invention can be used to produce the matched junction of 150 and 165 steel grade drill pipes.
Claims (5)
1. a steel grade drill pipe joint is characterized in that, is that the one-tenth by following weight per-cent is grouped into: C 0.25-0.32%, Si≤0.30%, Mn 0.35-0.80%, P≤0.015%, S≤0.008%, Mo 0.15-0.80%, Ni 0.00-1.00%, Cr 0.90-1.50%, Al≤0.03%, Nb≤0.05%, V≤0.10%, surplus is Fe and the trace elements that can not remove.
2. a kind of 135 steel grade drill pipe joints according to claim 1 is characterized in that, adopt one or more compositions of following weight ratio: C 0.25-0.28%, Si 0.20-0.23%, Mn 0.45-0.50%, P 0.006%, and S 0.004%, Mo 0.50-0.55%, Ni 0.55-0.60%, Cr 0.95-1.00%, Al 0.02%, V 0.08-0.10%, surplus is Fe and the trace elements that can not remove.
3. a kind of 135 steel grade drill pipe joints according to claim 1, it is characterized in that, adopt one or more compositions of following weight ratio: C 0.26-0.30%, Si 0.26-0.28%, Mn 0.75-0.80%, P≤0.015%, S≤0.005%, Mo 0.70-0.80%, Cr 1.30-1.40%, Al 0.02%, and Nb 0.03%, and surplus is Fe and the trace elements that can not remove.
4. a kind of 135 steel grade drill pipe joints according to claim 1, it is characterized in that, adopt one or more compositions of following weight per-cent: C 0.28-0.32%, Si 0.26-0.28%, Mn 0.70-0.76%, P≤0.015%, S≤0.005%, Mo 0.15-0.20%, Ni 0.90-1.00%, Cr 1.00-1.10%, Al 0.02%, and surplus is Fe and the trace elements that can not remove.
5. arbitrary described 135 steel grade drill pipe joint thermal treatment process of claim 1～4, it is characterized in that, rough machined described 135 steel grade drill pipe joint blanks were elevated to 920～960 ℃ with 80～100 minutes by room temperature, be incubated after 0.5～1.5 hour, put into 30～50 ℃ of oil base quenchants, and fully cooling, and then be elevated to 550～620 ℃ by room temperature with 50～70 minutes, come out of the stove after being incubated about 1.5～2.5 hours.
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| CN2011100660972A CN102140611A (en) | 2011-03-18 | 2011-03-18 | 135 steel-level drill rod connector and heat treatment process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787274A (en) * | 2012-08-21 | 2012-11-21 | 宝山钢铁股份有限公司 | Ultra-high-ductility high-strength drill rod and manufacturing method thereof |
| CN103233113A (en) * | 2013-04-28 | 2013-08-07 | 江苏曙光石油钻采设备有限公司 | Heat treatment process of welded type weighted drill rod joint |
| CN103867136A (en) * | 2013-12-30 | 2014-06-18 | 中国石油天然气集团公司 | Method for improving wear resistance of drill pipe female adapter |
| CN104894487A (en) * | 2015-06-25 | 2015-09-09 | 江苏沙钢集团淮钢特钢股份有限公司 | High-strength high-toughness steel for valves of oil drilling platforms and technology for manufacturing high-strength high-toughness steel |
| CN107575171A (en) * | 2017-10-21 | 2018-01-12 | 中国石油集团渤海钻探工程有限公司 | A kind of drilling rod and its application method for salt-water drilling fluid |
| CN107988553A (en) * | 2017-11-28 | 2018-05-04 | 钢铁研究总院 | A kind of high tenacity high speed axles steel and its heat treatment method |
| CN109972038A (en) * | 2019-04-01 | 2019-07-05 | 宝钢特钢韶关有限公司 | A kind of ultradeep well tool joint steel and its manufacturing method |
| CN110484818A (en) * | 2019-09-03 | 2019-11-22 | 山东钢铁股份有限公司 | A kind of petroleum rubber core of lubricator supporter steel and its production method |
| CN111394662A (en) * | 2020-05-08 | 2020-07-10 | 内蒙古第一机械集团有限公司 | Anti hydrogen sulfide drill collar |
| CN111471926A (en) * | 2020-04-09 | 2020-07-31 | 烟台大学 | Pipe joint and preparation method thereof |
| CN112662950A (en) * | 2020-12-16 | 2021-04-16 | 黑龙江建龙钢铁有限公司 | Oil casing pipe capable of resisting corrosion of carbon dioxide and hydrogen sulfide and production process thereof |
| CN112813359A (en) * | 2021-01-06 | 2021-05-18 | 包头钢铁（集团）有限责任公司 | Medium-carbon low-alloy high-strength hydrogen sulfide corrosion-resistant oil well pipe |
| WO2023206818A1 (en) * | 2022-04-29 | 2023-11-02 | 南京钢铁股份有限公司 | 120ksi-steel-grade high-strength high-toughness high-hydrogen sulfide-resistance hot-rolled steel round bar used for drill pipe joint, and preparation method therefor |
| CN117448691A (en) * | 2023-12-12 | 2024-01-26 | 江苏沙钢集团淮钢特钢股份有限公司 | Corrosion-resistant large-specification petroleum production and packaging spare steel and manufacturing method thereof |
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| WO2014029328A1 (en) * | 2012-08-21 | 2014-02-27 | 宝山钢铁股份有限公司 | Super high toughness and high strength drill rod and manufacturing process therefor |
| US10227828B2 (en) | 2012-08-21 | 2019-03-12 | Baoshan Iron & Steel Co., Ltd. | Ultra-high toughness and high strength drill pipe and manufacturing process thereof |
| CN102787274A (en) * | 2012-08-21 | 2012-11-21 | 宝山钢铁股份有限公司 | Ultra-high-ductility high-strength drill rod and manufacturing method thereof |
| CN103233113A (en) * | 2013-04-28 | 2013-08-07 | 江苏曙光石油钻采设备有限公司 | Heat treatment process of welded type weighted drill rod joint |
| CN103867136A (en) * | 2013-12-30 | 2014-06-18 | 中国石油天然气集团公司 | Method for improving wear resistance of drill pipe female adapter |
| CN103867136B (en) * | 2013-12-30 | 2016-02-10 | 中国石油天然气集团公司 | For improving the method for drill pipe box abrasion resistance |
| CN104894487A (en) * | 2015-06-25 | 2015-09-09 | 江苏沙钢集团淮钢特钢股份有限公司 | High-strength high-toughness steel for valves of oil drilling platforms and technology for manufacturing high-strength high-toughness steel |
| CN107575171A (en) * | 2017-10-21 | 2018-01-12 | 中国石油集团渤海钻探工程有限公司 | A kind of drilling rod and its application method for salt-water drilling fluid |
| CN107988553A (en) * | 2017-11-28 | 2018-05-04 | 钢铁研究总院 | A kind of high tenacity high speed axles steel and its heat treatment method |
| CN109972038B (en) * | 2019-04-01 | 2021-07-20 | 宝钢特钢韶关有限公司 | Steel for ultra-deep well drill rod joint and manufacturing method thereof |
| CN109972038A (en) * | 2019-04-01 | 2019-07-05 | 宝钢特钢韶关有限公司 | A kind of ultradeep well tool joint steel and its manufacturing method |
| CN110484818A (en) * | 2019-09-03 | 2019-11-22 | 山东钢铁股份有限公司 | A kind of petroleum rubber core of lubricator supporter steel and its production method |
| CN110484818B (en) * | 2019-09-03 | 2020-08-14 | 山东钢铁股份有限公司 | Steel for rubber core support of oil blowout preventer and production method thereof |
| CN111471926A (en) * | 2020-04-09 | 2020-07-31 | 烟台大学 | Pipe joint and preparation method thereof |
| CN111394662A (en) * | 2020-05-08 | 2020-07-10 | 内蒙古第一机械集团有限公司 | Anti hydrogen sulfide drill collar |
| CN112662950A (en) * | 2020-12-16 | 2021-04-16 | 黑龙江建龙钢铁有限公司 | Oil casing pipe capable of resisting corrosion of carbon dioxide and hydrogen sulfide and production process thereof |
| CN112813359A (en) * | 2021-01-06 | 2021-05-18 | 包头钢铁（集团）有限责任公司 | Medium-carbon low-alloy high-strength hydrogen sulfide corrosion-resistant oil well pipe |
| CN112813359B (en) * | 2021-01-06 | 2022-04-15 | 包头钢铁（集团）有限责任公司 | Medium-carbon low-alloy high-strength hydrogen sulfide corrosion-resistant oil well pipe |
| WO2023206818A1 (en) * | 2022-04-29 | 2023-11-02 | 南京钢铁股份有限公司 | 120ksi-steel-grade high-strength high-toughness high-hydrogen sulfide-resistance hot-rolled steel round bar used for drill pipe joint, and preparation method therefor |
| CN117448691A (en) * | 2023-12-12 | 2024-01-26 | 江苏沙钢集团淮钢特钢股份有限公司 | Corrosion-resistant large-specification petroleum production and packaging spare steel and manufacturing method thereof |
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Application publication date: 20110803 |