CN202520243U - 一种防卡瓦咬伤钻杆 - Google Patents

一种防卡瓦咬伤钻杆 Download PDF

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Publication number
CN202520243U
CN202520243U CN 201220125451 CN201220125451U CN202520243U CN 202520243 U CN202520243 U CN 202520243U CN 201220125451 CN201220125451 CN 201220125451 CN 201220125451 U CN201220125451 U CN 201220125451U CN 202520243 U CN202520243 U CN 202520243U
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China
Prior art keywords
drill pipe
thick
bite
pipe body
walled
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Expired - Lifetime
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CN 201220125451
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English (en)
Inventor
吴陈
陈长青
王青林
李齐富
刘智超
司长江
李斌
纪海涛
张彦申
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Bohai Equipment Manufacturing Co Ltd
Bohai NKK Drill Pipe Co Ltd
Original Assignee
中国石油集团渤海石油装备制造有限公司
渤海能克钻杆有限公司
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Priority to CN 201220125451 priority Critical patent/CN202520243U/zh
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Publication of CN202520243U publication Critical patent/CN202520243U/zh
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Abstract

本实用新型公开了一种防卡瓦咬伤钻杆,它包括钻杆公接头、钻杆管体和钻杆母接头,另外在钻杆管体和钻杆母接头之间焊接有厚壁管,厚壁管外径与钻杆管体的加厚端外径一致。在卡瓦与钻杆的咬合部位焊接了耐咬合的厚壁管,可防卡瓦咬伤、减少咬痕,提高了钻杆的使用寿命。

Description

一种防卡瓦咬伤钻杆
技术领域
本实用新型涉及一种钻杆。
背景技术
随着钻井的发展,钻井的深度、水平段的长度等均大幅度增加,钻井对钻杆的要求越来越高,要求提供高质量的钻具,提高钻井效率。为了减少起下钻时间,提高钻井效率,在倒换钻具时普遍采用“一卡一吊”的起下钻方式,由于采用卡瓦,在距离母端600-900mm产生卡瓦咬伤,长时间使用容易造成钻杆刺穿事故。
实用新型内容
本实用新型要解决的技术问题是提供一种防卡瓦咬伤钻杆,它具有防卡瓦咬伤、减少咬痕和提高钻杆使用寿命等特点。
为解决上述技术问题,本实用新型所采取的技术方案是:它包括钻杆公接头、钻杆管体和钻杆母接头,另外在钻杆管体和钻杆母接头之间焊接有厚壁管,厚壁管外径与钻杆管体的加厚端外径一致。
本实用新型进一步改进在于:厚壁管内径与钻杆管体的加厚端内径一致,厚壁管的长度为700mm-1400mm。
采用上述技术方案所产生的有益效果在于:在卡瓦与钻杆的咬合部位焊接了耐咬合的厚壁管,厚壁管内径和外径与钻杆管体的加厚端一致,使摩擦焊接更加牢固,可防卡瓦咬伤、减少咬痕,提高了钻杆的使用寿命。
附图说明
图1是本实用新型的结构示意图。
在附图中:1、钻杆公接头;2、钻杆管体;3、钻杆母接头;4、厚壁管;5、焊缝。
具体实施方式
由图1所示的实施例可知,它包括钻杆公接头1、钻杆管体2和钻杆母接头3,另外在钻杆管体2和钻杆母接头3之间通过摩擦焊接有厚壁管4,厚壁管4内径和外径与钻杆管体2的加厚端一致,材质可选为4137H,材料强度可选为120Ksi,根据卡瓦与钻杆咬合位置,其长度可选为700mm-1400mm。
工作原理:
在卡瓦与钻杆的咬合部位焊接了耐咬合的厚壁管,可防卡瓦咬伤、减少咬痕,提高了钻杆的使用寿命。

Claims (2)

1.一种防卡瓦咬伤钻杆,包括钻杆公接头(1)、钻杆管体(2)和钻杆母接头(3),其特征在于:在钻杆管体(2)和钻杆母接头(3)之间焊接有厚壁管(4),所述厚壁管(4)外径与钻杆管体(2)的加厚端外径一致。
2.根据权利要求1所述的一种防卡瓦咬伤钻杆,其特征在于所述厚壁管(4)内径与钻杆管体(2)的加厚端内径一致,所述厚壁管(4)的长度为700mm-1400mm。
CN 201220125451 2012-03-29 2012-03-29 一种防卡瓦咬伤钻杆 Expired - Lifetime CN202520243U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220125451 CN202520243U (zh) 2012-03-29 2012-03-29 一种防卡瓦咬伤钻杆

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220125451 CN202520243U (zh) 2012-03-29 2012-03-29 一种防卡瓦咬伤钻杆

Publications (1)

Publication Number Publication Date
CN202520243U true CN202520243U (zh) 2012-11-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104100212A (zh) * 2013-04-15 2014-10-15 上海海隆石油钻具有限公司 抗挤毁咬伤保护钻杆

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104100212A (zh) * 2013-04-15 2014-10-15 上海海隆石油钻具有限公司 抗挤毁咬伤保护钻杆

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C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20210222

Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen

Patentee after: CHINA NATIONAL PETROLEUM Corp.

Patentee after: CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd.

Patentee after: BOHAI NKK DRILLING PIPE Co.,Ltd.

Address before: 300457 building 3, Tianjin Binhai Service Outsourcing Industrial Park, 19 West Road, Tanggu, Tianjin.

Patentee before: CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd.

Patentee before: BOHAI NKK DRILLING PIPE Co.,Ltd.

TR01 Transfer of patent right
CX01 Expiry of patent term

Granted publication date: 20121107

CX01 Expiry of patent term