高钢级套管段铣工具优化及性能评价

苗娟; 黄兵; 谢力; 汤明

doi:10.3969/j.issn.1006-6535.2021.02.025

特种油气藏 >

2021 , Vol. 28 >Issue 2: 163 - 170

DOI: https://doi.org/10.3969/j.issn.1006-6535.2021.02.025

钻采工程

高钢级套管段铣工具优化及性能评价

苗娟 ,
黄兵 ,
谢力 ,
汤明

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1.西南石油大学工程学院,四川南充 611130;
2.中国石油川庆钻探工程有限公司,四川广汉 618300;
3.中国石油华北油田分公司,河北廊坊 065700;
4.西南石油大学石油工程学院,四川成都 610500

苗娟(1983—),女,讲师,2007年毕业于西南石油大学化学工程与工艺专业,2010年毕业于该校油气井工程专业,获硕士学位,现从事石油工程方面的教学和科研工作。

收稿日期: 2020-07-06

修回日期: 2020-12-23

网络出版日期: 2022-02-16

基金资助

国家科技重大专项“基于水化进程的泥岩地层井壁坍塌机理研究”(51904260);南充市科技局项目“高性能套管锻铣工具研发”(19SXH0031)

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Optimization and Performance Evaluation of High-grade Steel Casing Section Milling Tools

Miao Juan ,
Huang Bing ,
Xie Li ,
Tang Ming

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1. Engineering College, Southwest Petroleum University, Nanchong, Sichuan 611130, China;
2. CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, Sichuan 618300, China;
3. PetroChina Huabei Oilfield Company, Langfang, Hebei 065700, China;
4. College of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received date: 2020-07-06

Revised date: 2020-12-23

Online published: 2022-02-16

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摘要

套管段铣技术被广泛应用于老井侧钻和废弃井作业,具有广阔的应用前景。针对常规段铣工具在高钢级套管段铣作业中存在的切割时间长、段铣速度慢、进尺短等难题,设计了适用于Φ177.8 mm套管的高性能段铣工具。段铣工具刀片切削齿采用进口高强度高稳定性碳化钨材质,切削刀片齿形结构优化为内凹齿+锐化菱形齿,磨铣刀片齿形结构优化为内凹齿+非均匀布齿结构。通过地面实验和LS-DYNA仿真模拟系统对设计的段铣工具进行了切割和段铣效果评价。结果表明:高钢级套管段铣工具割断套管时间低于5.00 min,段铣速度大于0.8 m/h,单趟段铣平均进尺为10 m左右,套管段铣效率大幅提高。Φ177.8 mm高钢级套管段铣工具具有切割时间短、段铣速度快、单趟进尺长等优势,推广应用前景广阔。

关键词： 段铣工具; 套管; 切削齿; 侧钻; 废弃井; 仿真模拟

本文引用格式

苗娟 , 黄兵 , 谢力 , 汤明 . 高钢级套管段铣工具优化及性能评价[J]. 特种油气藏, 2021 , 28(2) : 163 -170 . DOI: 10.3969/j.issn.1006-6535.2021.02.025

Abstract

Casing section milling technology has applied widely to old wells sidetracking and abandoned wells, with broad application prospects. Aiming at solving the problems of long cutting time, slow milling speed and short footage of conventional section milling tools in the section milling process of high-grade steel casing, high-performance section milling tools were designed for Φ177.8 mm casing. The cutting blade of section milling tool was made of imported tungsten carbide with high strength and high stability. The tooth structure of the cutting blade was optimized as concave teeth + sharpened diamond teeth, and the tooth structure of the milling blade was optimized as concave teeth + non-evenly arranged teeth. The cutting and section milling effects of the designed section milling tool were evaluated by ground experiment and LS-DYNA simulation system. The results showed that the high-grade steel casing section casing cut off the casing within 5.00 min, the section milling speed was more than 0.8 m/h, and the average footage of single section milling was about 10 m. The casing section milling efficiency was improved significantly. Φ177.8 mm high-grade steel casing section milling tool is advantaged by short cutting time, high section milling speed, and long footage of single milling, with wide promotion and application prospects.

Key words： section milling tool; casing; cutting teeth; sidetracking; abandoned well; simulation

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