涠洲组井壁失稳的应对措施
Response Measures for Wellbore Instability in the Weizhou Formation
艾常明 1莫康荣 2黄飞宇3
作者信息
- 1. 西安石油大学地球科学与工程学院,陕西西安 10705;陕西省油气成藏地质学重点实验室,陕西西安 10705;中海油能源发展股份有限公司工程技术湛江分公司,广东湛江 524057
- 2. 中海石油有限公司湛江分公司,广东湛江 524057
- 3. 中海油能源发展股份有限公司工程技术湛江分公司,广东湛江 524057
- 折叠
摘要
北部湾盆地涠洲组井壁失稳事故频发,井壁失稳后往往导致多个复杂情况连锁反应,少则增加处理时间,多则造成钻具被埋、井眼报废,致使北部湾区域钻井复杂事故发生率一直保持在南海西部乃至中国海洋石油"之首",严重制约北部湾区域钻完井作业.通过理论计算出钻井液安全钻进的密度、预测井壁失稳垮塌周期以及对井身结构进行优化再配合现场钻井液相关工艺措施,提出了如何应对涠洲组井壁失稳的措施,为后续作业提供了思路.
Abstract
the instability accidents of the weizhou formation wellbore in the beibu gulf Basin occur frequently.The instability of the wellbore often leads to multiple complex chain reactions,with some increasing processing time and others causing drilling tools to be buried and wellbore scrapping.As a result,the occurrence rate of complex drilling accidents in the beibu gulf region has always been the highest in the western south china sea and even in china's offshore oil industry,seriously restricting drilling and completion operations in the Beibu Gulf region.This article theoretically calculates the density of drilling fluid for safe drilling,predicts the period of wellbore instability and collapse,and optimizes the wellbore structure in conjunction with on-site drilling fluid related process measures.It proposes measures to deal with wellbore instability in the weizhou formation,providing ideas for subsequent operations.
关键词
石油勘探/井壁失稳/卡钻/泥岩水化Key words
oil exploration/wellbore instability/stuck drill/mudstone hydration引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据