CN102373887B - Drill rod and manufacture method thereof - Google Patents

Drill rod and manufacture method thereof Download PDF

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Publication number
CN102373887B
CN102373887B CN201010260427.7A CN201010260427A CN102373887B CN 102373887 B CN102373887 B CN 102373887B CN 201010260427 A CN201010260427 A CN 201010260427A CN 102373887 B CN102373887 B CN 102373887B
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China
Prior art keywords
drilling rod
body
described
pipe body
characterized
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CN201010260427.7A
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Chinese (zh)
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CN102373887A (en
Inventor
赵鹏
王超峰
左宏志
董长富
喻明智
耿鸿明
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宝山钢铁股份有限公司
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Publication of CN102373887A publication Critical patent/CN102373887A/en
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Abstract

The invention provides a drill rod, comprising a pipe body, an external thread joint and an internal thread joint, wherein one end of the pipe body is connected with the external thread joint in a welding way, the other end of the pipe body is connected with the internal thread joint in a welding way, the outer diameter of the pipe body is POD, the inner diameter of the pipe body is PID, the outer diameters of the internal thread joint and the external thread joint are both TJOD, and the inner diameters of the internal thread joint and the external thread joint are both TJID, wherein the constant R meets 5.22>=R=(PID+TJID)/(TJOD-POD)>=4.95. A manufacture method of the drill rod comprises the steps of: thickening two ends of the pipe body of the drill rod; carrying out full-length hardening and tempering treatment on the pipe body; connecting the thickened ends at two ends of the pipe body with the hardened and tempered internal thread joint and external thread joint by means of friction welding; and carrying out hardening and tempering heat treatment on weld joints. The invention can be used for manufacturing an overlarge tonnage drill rod with more than 600 tons and even more than 1000ton tensile load, thereby meeting the working condition requirements of myriameter ultra-deep drilling and 5000m ultra-long horizontal directional traversing.

Description

A kind of drilling rod and manufacture method thereof

Technical field

The present invention relates to a kind of super-tonnage drilling rod and manufacture method thereof.

Background technology

Drilling rod for oil drilling and Horizontal directional through-passing is manufactured according to API standard production.According to API SPEC 5DP standard, the drilling rod of tensile load maximum is Φ 168.28 × 9.19mm S-135 drilling rod, and its tensile load is 436 tons.

Along with the development of petroleum industry and Horizontal directional through-passing industry, the service condition of drilling rod is increasingly severe, and API standard drilling rod has been difficult to meet day by day harsh drilling well and Horizontal directional through-passing job requirements.Along with the intensification of drilling depth and the lengthening of Horizontal directional through-passing length, the tensile load of drilling rod is proposed to high requirement.

In order to meet these requirements, common way is to improve the grade of steel of product, is further increased to even 165 grade of steels of 150 grade of steels by the highest grade of steel S-135 in API standard.For Φ 168.28 × 9.19mm drilling rod, tensile load is brought up to 484 tons by 150 grade of steels, and 165 grade of steels are more brought up to 533 tons.

But for the special deep drilling well of myriametre and these extreme operating modes of 5000m speciality Horizontal directional through-passing, 500 tonnes of drilling rods are still difficult to meet the demands.Industry is desirable to provide a kind of job requirements that has 600 tons of super-tonnage drilling rods that even exceed above 1000 tons of tensile loads and meet the special deep drilling well of myriametre and 5000m speciality Horizontal directional through-passing.

Summary of the invention

The object of the present invention is to provide a kind of super-tonnage drilling rod and manufacture method thereof, application the present invention can produce 600 tons of super-tonnage drilling rods that even exceed above 1000 tons of tensile loads, thereby meets the working condition requirement of the special deep drilling well of myriametre and 5000m speciality Horizontal directional through-passing.

For achieving the above object, drilling rod of the present invention comprises body, male connection and female adapter, and one end of described body is connected with male connection by welding, and the other end is connected with female adapter by welding, and the external diameter of described body is P oD, internal diameter is P iD, the external diameter of described female adapter and male connection is TJ oD, internal diameter is TJ iD, wherein, constant R meets:

5.22 ≥ R = P ID + TJ ID TJ OD - P OD ≥ 4.95 .

Preferably, the SMYS of described body is 931MPa~1138MPa, and the SMYS of described female adapter and male connection is 827MPa~1034MPa.

Preferably, one end of described body is connected with male connection by friction welding, and the other end is connected with female adapter by friction welding.

Preferably, the external diameter P of described body oDfor 168.28mm, the wall thickness of described body is 14~20mm, more preferably 16mm.The external diameter TJ of described female adapter and male connection oDfor 215.9mm, the internal diameter TJ of described female adapter and male connection iDfor 108mm.

The present invention also provides the manufacture method of above-mentioned drilling rod, comprising:

A. the body two ends of drilling rod thicken processing;

B. body carries out total length modifier treatment;

C. the upset end at body two ends is connected as a single entity by friction welding with female adapter and male connection through modifier treatment;

D. weld seam carries out modified heat treatment.

Preferably, the thickening processing at described body two ends comprises 3 heating, 3 thickenings; Each thickening is thickening simultaneously inside and outside body.

Preferably, the heated length of heating is at least 550mm for the first time.

Preferably, the heat treatment method of described drill pipe body is shrend heat treatment, and the heat treatment method of described internal and external threads joint is oil quenching modifier treatment.

Preferably, described shrend heat treatment comprises by controlling the body injection flow rate different from upset end, makes the body of different wall have identical cooling velocity with upset end, to obtain identical performance.

Preferably, the modified heat treated process for quenching of described weld seam is appearance spray quenching liquid and Nei Biao spray air.

Beneficial effect of the present invention is:

Compared with prior art, adopt the present invention can produce 600 tons of super-tonnage drilling rods that even exceed above 1000 tons of tensile loads, thereby met the working condition requirement of the special deep drilling well of myriametre and 5000m speciality Horizontal directional through-passing.

Brief description of the drawings

Fig. 1 shows the cross section view of a preferred embodiment of drilling rod of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described in further detail.

Fig. 1 is the structural representation of super-tonnage drilling rod, and 1 is drill pipe body, and 2 is drill pipe box, and 4 is drilling rod male connection.Drill pipe body 1 is connected as a single entity and is formed weld seam 3 by friction welding with female adapter 2.Meanwhile, drill pipe body 1 is also connected as a single entity and is formed weld seam 5 by friction welding with male connection 4.Finally, drill pipe body 1 and female adapter 2, a finished product drilling rod of male connection 4 common compositions.

The external diameter of drill pipe body 1 is P oD, internal diameter is P iD.Female adapter 2 is all identical with the internal-and external diameter of male connection 4, and internal and external threads joint external diameter is TJ oD, internal diameter is TJ iD.There is a constant R in drilling rod, meets formula:

5.22 ≥ R = P ID + TJ ID TJ OD - P OD ≥ 4.95 .

According to the manufacture method of drilling rod of the present invention be: process through thickening at body two ends, after thickening, body carries out total length modifier treatment, modified rear body two ends upset end is connected as a single entity by friction welding with the internal and external threads joint of also process modifier treatment, and postwelding carries out weld seam heat treatment.

Wherein, the thickening step of drill pipe body is 3 heating, 3 thickenings.Each thickening is internal-external thickening.The heating for the first time of thickening operation, its heated length is at least 550mm.The manufacture method of drill pipe with internally and externally thickened end is shown in the CN 200510027402.1 that on March 5th, 2008, bulletin was authorized, and by reference its full content is attached in the present invention at this.

The heat treatment method of drill pipe body is shrend heat treatment, and the heat treatment method of internal and external threads joint is oil quenching modifier treatment.One of ordinary skill in the art can such as, according to the concrete technology condition of the concrete material decision reality of steel pipe and internal and external threads joint, heating-up temperature, heat time etc.In addition, by controlling the body injection flow rate different from upset end, make the body of different wall there is identical cooling velocity with upset end, finally obtain identical performance.The modified heat treated process for quenching of weld seam of drilling rod is appearance spray quenching liquid and Nei Biao spray air.

Because drill pipe body and internal and external threads joint are connected as a single entity by friction welding, therefore body and internal and external threads joint can be by adopting different materials, different heat treatment to obtain different performances.

As an example of Φ 168.28 × 16mm drilling rod example, the specific embodiment of the present invention is described below, drill pipe body external diameter P oDfor 168.28mm, wall thickness is 16mm, internal diameter P iDfor 136.28mm; Drilling rod internal and external threads joint external diameter TJ oDfor 215.9mm, internal diameter TJ iDfor 108mm.Can find out from above-described embodiment, the wall thickness of drill pipe body is only 16mm, and the wall thickness of internal and external threads joint is 53.95mm, even if consider the impact of screw thread, wall thickness also exceedes 25mm.Therefore,, under the condition of bearing tensile load, the supporting capacity of drill pipe body is by the supporting capacity much smaller than internal and external threads joint.For these reasons, the intensity of internal and external threads joint can be slightly less than the intensity of drill pipe body.Therefore, for reaching 600 tons of supporting capacitys that even exceed above 1000 tons of tensile loads, the SMYS of drill pipe body is 931MPa~1138MPa, and the SMYS of drill pipe box and male connection is 827MPa~1034MPa.

Embodiment 1

Φ 168.28 × 16mm drilling rod

This drill pipe body external diameter P oDfor 168.28mm, wall thickness is 16mm, internal diameter P iDfor 136.28mm; Drilling rod internal and external threads joint external diameter TJ oDfor 215.9mm, internal diameter TJ iDfor 108mm.The R value of drilling rod is

P ID + TJ ID TJ OD - P OD = 5.13 ,

Meet 5.22 >=5.13 >=4.95 requirement.

Process through thickening at drill pipe body two ends, and after thickening, body carries out total length modifier treatment, and modified rear body two ends upset end is connected as a single entity by friction welding with the internal and external threads joint of also process modifier treatment, and postwelding carries out weld seam heat treatment.

Wherein, the thickening step of drill pipe body is 3 heating, 3 thickenings.Each thickening is internal-external thickening.The heating for the first time of thickening operation, its heated length is at least 550mm.The heat treatment method of drill pipe body is shrend heat treatment, and the heat treatment method of internal and external threads joint is oil quenching modifier treatment.By controlling the body injection flow rate different from upset end, make the body of different wall there is identical cooling velocity with upset end, finally obtain identical performance.The modified heat treated process for quenching of weld seam of drilling rod is appearance spray quenching liquid and Nei Biao spray air.

In the time that the SMYS of body is 931MPa, when the SMYS of joint is 827MPa, the tensile load of drilling rod is 726 tons.

In the time that the SMYS of body is 1034MPa, when the SMYS of joint is 827MPa, the tensile load of drilling rod is 807 tons.

In the time that the SMYS of body is 1138MPa, when the SMYS of joint is 827MPa, the tensile load of drilling rod is 888 tons.

Embodiment 2

Φ 168.28 × 14mm drilling rod

This drill pipe body external diameter P oDfor 168.28mm, wall thickness is 14mm, internal diameter P iDfor 140.28mm; Drilling rod internal and external threads joint external diameter TJ oDfor 215.9mm, internal diameter TJ iDfor 108mm.The R value of drilling rod is

P ID + TJ ID TJ OD - P OD = 5.21 ,

Meet 5.22 >=5.21 >=4.95 requirement.

Process through thickening at drill pipe body two ends, and after thickening, body carries out total length modifier treatment, and modified rear body two ends upset end is connected as a single entity by friction welding with the internal and external threads joint of also process modifier treatment, and postwelding carries out weld seam heat treatment.

Wherein, the thickening step of drill pipe body is 3 heating, 3 thickenings.Each thickening is internal-external thickening.The heating for the first time of thickening operation, its heated length is at least 550mm.The heat treatment method of drill pipe body is shrend heat treatment, and the heat treatment method of internal and external threads joint is oil quenching modifier treatment.By controlling the body injection flow rate different from upset end, make the body of different wall there is identical cooling velocity with upset end, finally obtain identical performance.The modified heat treated process for quenching of weld seam of drilling rod is appearance spray quenching liquid and Nei Biao spray air.

In the time that the SMYS of body is 931MPa, when the SMYS of joint is 827MPa, the tensile load of drilling rod is 644 tons.

In the time that the SMYS of body is 1034MPa, when the SMYS of joint is 827MPa, the tensile load of drilling rod is 715 tons.

In the time that the SMYS of body is 1138MPa, when the SMYS of joint is 827MPa, the tensile load of drilling rod is 787 tons.

Embodiment 3

Φ 168.28 × 20mm drilling rod

This drill pipe body external diameter P oDfor 168.28mm, wall thickness is 20mm, internal diameter P iDfor 128.28mm; Drilling rod internal and external threads joint external diameter TJ oDfor 215.9mm, internal diameter TJ iDfor 108mm.The R value of drilling rod is

P ID + TJ ID TJ OD - P OD = 4.96 ,

Meet 5.22 >=4.96 >=4.95 requirement.

Process through thickening at drill pipe body two ends, and after thickening, body carries out total length modifier treatment, and modified rear body two ends upset end is connected as a single entity by friction welding with the internal and external threads joint of also process modifier treatment, and postwelding carries out weld seam heat treatment.

Wherein, the thickening step of drill pipe body is 3 heating, 3 thickenings.Each thickening is internal-external thickening.The heating for the first time of thickening operation, its heated length is at least 550mm.The heat treatment method of drill pipe body is shrend heat treatment, and the heat treatment method of internal and external threads joint is oil quenching modifier treatment.By controlling the body injection flow rate different from upset end, make the body of different wall there is identical cooling velocity with upset end, finally obtain identical performance.The modified heat treated process for quenching of weld seam of drilling rod is appearance spray quenching liquid and Nei Biao spray air.

In the time that the SMYS of body is 931MPa, when the SMYS of joint is 1034MPa, the tensile load of drilling rod is 884 tons.

In the time that the SMYS of body is 1034MPa, when the SMYS of joint is 1034MPa, the tensile load of drilling rod is 982 tons.

In the time that the SMYS of body is 1138MPa, when the SMYS of joint is 1034MPa, the tensile load of drilling rod is 1080 tons.

Application the present invention can produce 600 tons of super-tonnage drilling rods that even exceed above 1000 tons of tensile loads, thereby has met the working condition requirement of the special deep drilling well of myriametre and 5000m speciality Horizontal directional through-passing.Therefore the drilling rod that, adopts patent of the present invention to produce is specially adapted to the construction of highly difficult engineering of the worlds such as the special deep-well of myriametre and 5000m speciality Horizontal directional through-passing.

Claims (11)

1. a drilling rod, is characterized in that, described drilling rod comprises body, male connection and female adapter, and one end of described body is connected with male connection by welding, and the other end is connected with female adapter by welding, and the external diameter of described body is P oD, internal diameter is P iD, the external diameter of described female adapter and male connection is TJ oD, internal diameter is TJ iD, wherein, constant R meets:
5.22 ≥ R = P ID + TJ ID TJ OD - P OD ≥ 4.95
Wherein P oDfor 168.28mm, the SMYS of described body is 931MPa, and the SMYS of described female adapter and male connection is 827MPa;
Described drilling rod is by the method manufacture that comprises following steps:
A. the body two ends of drilling rod thicken processing, and the thickening processing at described body two ends comprises 3 heating, 3 thickenings;
B. body carries out total length modifier treatment;
C. the upset end at body two ends is connected as a single entity by friction welding with female adapter and male connection through modifier treatment;
D. weld seam carries out modified heat treatment.
2. drilling rod according to claim 1, is characterized in that, one end of described body is connected with male connection by friction welding, and the other end is connected with female adapter by friction welding.
3. drilling rod according to claim 1, is characterized in that, the external diameter TJ of described female adapter and male connection oDfor 215.9mm.
4. drilling rod according to claim 1, is characterized in that, the internal diameter TJ of described female adapter and male connection iDfor 108mm.
5. drilling rod according to claim 4, is characterized in that, the wall thickness of described body is 14~20mm.
6. drilling rod according to claim 5, is characterized in that, the wall thickness of described body is 16mm.
7. drilling rod according to claim 1, is characterized in that, each thickening is thickening simultaneously inside and outside body.
8. drilling rod according to claim 1, is characterized in that, the heated length of heating is at least 550mm for the first time.
9. drilling rod according to claim 1, is characterized in that, the heat treatment method of described body is shrend heat treatment, and the heat treatment method of described female adapter and male connection is oil quenching modifier treatment.
10. drilling rod according to claim 9, is characterized in that, described shrend heat treatment comprises the injection flow rate by being controlled at body and upset end place, makes the body of different wall have identical cooling velocity with upset end, to obtain identical performance.
11. drilling rods according to claim 1, is characterized in that, the modified heat treated process for quenching of described weld seam is appearance spray quenching liquid and Nei Biao spray air.
CN201010260427.7A 2010-08-23 2010-08-23 Drill rod and manufacture method thereof CN102373887B (en)

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Application Number Priority Date Filing Date Title
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CN102373887B true CN102373887B (en) 2014-12-03

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103775002A (en) * 2012-10-22 2014-05-07 宝山钢铁股份有限公司 Large-specification drill pipe and manufacturing method thereof
CN104108002A (en) * 2013-04-19 2014-10-22 宝山钢铁股份有限公司 Method for manufacturing super 13Cr friction welding drill rod
CN105696948A (en) * 2016-04-08 2016-06-22 中石化石油工程技术服务有限公司 Drill rod for well repair side tracking

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6244631B1 (en) * 1999-03-02 2001-06-12 Michael Payne High efficiency drill pipe
CN2670579Y (en) * 2003-10-29 2005-01-12 宝山钢铁股份有限公司 Drill rod for deep operation
CN100372627C (en) * 2005-06-30 2008-03-05 宝山钢铁股份有限公司 Making process of drill pipe with internally and externally thickened end
CN100467627C (en) * 2006-02-27 2009-03-11 宝山钢铁股份有限公司 Drilling-rod weld heat-treatment quenching method and apparatus
CN100422374C (en) * 2006-04-04 2008-10-01 无锡西姆莱斯石油专用管制造有限公司 Anti-sulfur drill rod and method for manufacturing the same
CN101117683A (en) * 2006-07-31 2008-02-06 宝山钢铁股份有限公司 High-performance hydrogen sulfide corrosion resistant oil drill rocker and its heat treatment process

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