新型钻井液成膜剂的研制及其在埕海油田的应用

张朔; 蒋官澄; 郭海涛; 汤新国; 金海锋

doi:10.3969/j.issn.1001-0890.2013.02.009

新型钻井液成膜剂的研制及其在埕海油田的应用

doi: 10.3969/j.issn.1001-0890.2013.02.009

1.
中国石油大学(北京)石油工程学院, 北京 102249;
2.
中国石油大港油田分公司, 天津 300289

详细信息

作者简介:
张朔(1986-),男,安徽阜阳人,2007年毕业于中国石油大学(华东)信息与计算科学专业,2011年获常州大学化工过程机械专业硕士学位,在读博士研究生,主要从事油气层损害与保护、油田化学等方面的研究工作。联系方式zhangshuo915@sina.com。

中图分类号: TE254.⁺4
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出版历程
- 收稿日期: 2012-10-09
- 修回日期: 2013-01-24
- 刊出日期: 2013-04-19

Development of New Film-Forming Agent for Drilling Fluids and Application in Chenghai Oilfield

1.
Petroleum Engineering College, China University of Petroleum, Beijing, 102249, China;
2.
Dagang Oilfield Branch of CNPC, Tianjin, 300289, China

摘要

摘要: 为了降低埕海油田钻井过程中外来流体对储层的损害,基于成膜钻井液技术的基本理论,以苯乙烯、丙烯酸丁酯单体为原料,采用乳液聚合的方法,以过硫酸铵为引发剂,合成了新型钻井液成膜剂LCM-8。室内试验表明:埕海油田上部钻井液中加入成膜剂LCM-8后,流变性能能够满足携岩要求;能在岩心污染端形成一个渗透率极低的封堵带,封堵率可达90%以上;返排渗透率恢复率大于90%。新型钻井液成膜剂LCM-8在埕海油田2口井的储层钻进过程中进行了应用,结果表明,上部钻井液加入该成膜剂后,其性能能满足钻井要求,2口井的表皮系数为-2.31和-3.11,而未用该成膜剂2口邻井的表皮系数为-0.27和0.23。这说明,成膜剂LCM-8能满足埕海油田钻井要求,实现钻井过程中的储层保护。
- 钻井液 /
- 成膜剂 /
- 防止地层损害 /
- 封堵 /
- 表皮系数 /
- 埕海油田
Abstract: In order to reduce the reservoir damage caused by foreign fluid during drilling in Chenghai Oilfield,a new film-forming agent LCM-8 had been developed using styrene,butyl acrylate monomer and trigger ammonium persulfate,by emulsion polymerization method based on the film-forming technology.Laboratory tests showed that rheological properties of the drilling fluid could be gotten to carry cuttings after adding LCM-8,which could form a plugging area with low permeability at the polluted end of the core.The plugging rate and flowback permeability recovery rate could be higher than 90%.LCM-8 had been applied in two wells in Chenghai Oilfield,the results showed that the drilling fluid for the upper well section could meet the drilling demand after adding the film-forming agent,resulting in skin factors of -2.31 and -3.11 respectively,while the skin factors of two adjacent wells were -0.27 and 0.23 respectively without adding the film forming agent.It showed that LCM-8 could meet the demand of drilling and reservoir protection in Chenghai Oilfield.
- Drilling fluid /
- film-forming agent /
- prevent formation damage /
- plugging /
- skin factor /
- Chenghai Oilfield

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