连续油管压裂管柱机械定位摩擦体数值模拟研究
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- 英文论文题名：Numerical simulation research on mechanical positioning friction body of coiled tubing fracturing string
- 论文作者：孔立宏
- 英文论文作者：Kong Lihong
- 年：2017
- 作者机构：大庆油田有限责任公司采油工程研究院;
- 论文关键词：连续油管 ; 压裂管柱 ; 机械定位 ; 摩擦体 ; 数值模拟
- 英文论文关键词：coiled tubing ; fracturing string ; mechanical positioning ; friction body ; numerical simulation
- 会议召开时间：2017-03-01
- 会议录名称：《采油工程文集》2017年第1辑
- 英文会议录名称：Oil Production Engineering
- 语种：中文
- 分类号：TE934.2
- 学会代码：DQGY
- 学会名称：大庆油田有限责任公司采油工程研究院
- 页数：6
- 文件大小：3287k
- 原文格式：D
摘要
连续油管压裂管柱机械定位摩擦体(以下简称摩擦体)对确定连续油管下入深度、准确改造储层起到至关重要的作用。然而,该部件在下入管柱过程中,与套管内壁的接触增加了压裂工具串底部的摩擦阻力。采用数值模拟分析软件Abaqus,模拟摩擦体与套管内壁接触摩擦过程中接触受力状态及接触摩擦阻力。研究结果表明,摩擦体与套管内壁接触摩擦过程中,最大应力值高达992.2MPa,接触摩擦力范围为100~150N。分析结果可用于优化摩擦体底部应力集中问题,同时,为确定连续油管压裂管柱坐封载荷提供理论依据。
Mechanical positioning friction body of coiled tubing fracturing string(hereinafter referred to as friction body) plays an important role in determining the accurate depth of coiled tubing and stimulating the reservoir accurately. However, the contact between the friction body and the casing inner wall increases the frictionalresistance at the bottom of the fracturing tool string in the running process. The force status and frictional resistance have been simulated during the contacting course of friction body with casing inner wall by numerical simulation analysis software Abaqus. The research results showed that the maximum stress was up to 992. 2MPa, and the contact friction force was ranged from 100 N to 150 N. The analysis results can be used to optimize the stress concentration at the bottom of the friction body. At the same time, it can also provide theoretical basis for calculating the setting load of coiled tubing fracturing string.
Mechanical positioning friction body of coiled tubing fracturing string(hereinafter referred to as friction body) plays an important role in determining the accurate depth of coiled tubing and stimulating the reservoir accurately. However, the contact between the friction body and the casing inner wall increases the frictionalresistance at the bottom of the fracturing tool string in the running process. The force status and frictional resistance have been simulated during the contacting course of friction body with casing inner wall by numerical simulation analysis software Abaqus. The research results showed that the maximum stress was up to 992. 2MPa, and the contact friction force was ranged from 100 N to 150 N. The analysis results can be used to optimize the stress concentration at the bottom of the friction body. At the same time, it can also provide theoretical basis for calculating the setting load of coiled tubing fracturing string.
引文
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[2]李梅,刘志斌,吕双,等.连续油管喷砂射孔环空分段压裂技术在苏里格气田的应用[J].石油钻采工艺,2013,35(4):82-84.
[3]田守嶒,李根生,黄中伟,等.连续油管水力喷射压裂技术[J].天然气工业,2008,28(8):61-63.
[4]李琳,李清忠,张春辉,等.水平井连续油管压裂技术的应用[G]//大庆油田有限责任公司采油工程研究院.采油工程文集2012年第4辑.北京:石油工业出版社,2012:1-3.
[5]高大鹏.连续油管水力喷射环空压裂技术在大庆油田的应用[G]//大庆油田有限责任公司采油工程研究院.采油工程文集2016年第2辑.北京:石油工业出版社,2016:31-35.
[6]朱正喜,曹会,陈沙沙.国内水力喷射压裂工艺技术应用研究进展[J].石油矿场机械,2014,43(12):82-87.
[7]任发俊,贾浩民,张耀刚,等.水平井水力喷射分段改造工艺在靖边气田的应用[J].天然气工业,2011,31(10):57-60.