平北地区完井液储层伤害分析  

Analysis of the Damage of Completion Fluid to Reservoirs

作　　者：王家航 贾凤龙 田壮壮 高东亮 陆国琛 马海燕 Wang Jiahang;Jia Fenglong;Tian Zhuangzhuang;Gao Dongliang;Lu Guochen;Ma Haiyan(SINOPEC Shanghai Offshore Oil&Gas Company,Shanghai 200120,China)

机构地区：[1]中国石油化工股份有限公司上海海洋油气分公司,上海200120

出　　处：《科学技术创新》2022年第3期14-17,共4页Scientific and Technological Innovation

摘　　要：海上平北地区凝析气藏区块具有低孔低渗、敏感性强的特点,完井液对储层的伤害问题缺乏足够认识。本文系统评价了完井液的储层伤害情况,并对相关机制进行分析,明确甲酸盐完井液/隐形酸完井液的侵入会使岩心渗透率下降,渗透率大的岩心受影响更大,且发现岩心被完井液污染后亲水性增强、亲油性减弱。对比发现,隐形酸完井液对岩心的影响大于甲酸盐完井液,为下一步完井液体系的优化提供参考。In Pingbei area condensate gas reservoir block of my country,formate completion fluids and implicit acid completion fluids were selected as the main completion fluids at the initial stage of development.In recent years,the issue of pollution of completion fluids to the reservoir has gradually gained attention.Based on this,this article evaluates the reservoir damage of the completion fluid and analyzes the related mechanisms.It is clear that the intrusion of formate completion fluid and implicit acid completion fluid will reduce core permeability,and cores with high permeability will be more affected.And it was found that the hydrophilicity of the core was increased and the lipophilicity decreased after being contaminated by the completion fluid.By comparison,the impact of the implicit acid completion fluid on the core is greater than that of the formate completion fluid,which provides a reference for the optimization of the completion fluid system in the next step.

关 键 词：凝析气藏 完井液 储层伤害 渗透率伤害 

分 类 号：TE358[石油与天然气工程—油气田开发工程]