渤海湾盆地防漏堵漏工作研究——以KT1井为例
Techniques of lost circulation prevention and plugging in Bohai Bay Basin:Taking KT1 well as an example
刘涛 1黄连路 1杨金龙 1于建立 1于庆河 1李华1
作者信息
- 1. 中国石油集团海洋工程有限公司钻井分公司,天津 300451
- 折叠
摘要
随着石油勘探开发的不断深入,开发区块的地质愈加复杂,现场施工的防漏堵漏工作越来越受到重视.以渤海湾盆地葵花岛构造KT1井为研究对象,在简要介绍KT1井井身结构、地层分层数据的基础上,分别给出目标井二、三、四井段具体的防漏堵漏措施及现场堵漏方案,而后论述了现场井漏的预防及堵漏的流程,并对有关注意事项进行了较为深入的讨论.最后指出,在钻探开发前,需结合地层特性及井身结构对易漏地层进行精确分析,选择合理的钻井液配比,充分做好防漏堵漏工作;在钻井施工过程中,需注意压力、排量等参数的变化并及时进行调整,同时做好堵漏预案,以便在漏失初期能够采取有效的堵漏方案,从而降低井漏的影响.
Abstract
In deeper oil exploration,geological conditions of fields under development become increasingly complex,and more attention is paid to lost circulation prevention and plugging in on-site construction.Taking the KT1 well drilled in Kuihuadao of Bohai Bay Basin as an example,this paper gives a brief introduction of the well structure and stratigraphic layer data to show specific lost circulation prevention and on-site plugging measures and plans for number two,three,and four target well intervals.Then,lost circulation prevention andplugging process in on-site constructionis summarized with further discussion on the corresponding precautions.It is pointed out that a series of work should be carried out.Before drilling,precise analysis should be conductedon layers prone to leakagewith consideration of the formation's characteristics and wellbore's structure to obtain a proper drilling fluid formula.During drilling,attention should be paid to parameters such as pressure and flow rate,and adjustments should be made in time.At the same time,a lost circulation prevention plan should be prepared so that effective prevention measures can be taken at the early stages of lost circulation to minimize the influence of leakage.
关键词
渤海湾盆地/钻井防漏/堵漏方案/现场施工Key words
Bohai Bay Basin/drilling leakage prevention/pluggingplan/on-site construction引用本文复制引用
出版年
2024
NETL
NSTL
万方数据