| 低渗透凝析气藏储层损害特征及钻井液保护技术 |
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| 引用本文： | 耿娇娇,鄢捷年,邓田青,鄢小琳,舒勇.低渗透凝析气藏储层损害特征及钻井液保护技术[J].石油学报,2011,32(5):893-899. |
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| 作者姓名： | 耿娇娇 鄢捷年 邓田青 鄢小琳 舒勇 |
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| 作者单位： | 1中国石油大学石油工程教育部重点实验室 北京 102249； 2中国石油长城钻探工程有限公司 北京 100101； 3中国石油勘探开发研究院 北京 100083 |
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| 基金项目： | 国家自然科学基金项目(No.50974129); 国家科技重大专项(2009ZX05009-005)联合资助 |
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| 摘 要： | 低渗透凝析气藏储层孔喉细小，渗透性差，黏土含量高，非均质性严重，因而容易因各种入井工作液侵入储层造成水敏、水锁等损害，并经常发生其特有的反凝析损害。结合吐哈油田巴喀低渗透凝析气藏，系统分析了低渗透凝析气藏的储层损害特征。室内评价实验表明，水锁是该储层的主要损害因素之一，渗透率损害率为65.23% ~ 91.01%。在该区原用聚磺钻井液基础上，优选可有效降低油/水界面张力的表面活性剂，应用成膜技术与理想充填 “协同增效”的储层保护新方法，优化设计出保护储层低损害钻井液；通过开展配伍性、动态污染等实验对该钻井液的储层保护特性进行了评价。室内实验结果表明，该钻井液具有良好的流变性与配伍性，可使储层岩心的渗透率恢复值从63.2%增至84.7%，具有明显的储层保护效果。
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| 关 键 词： | 低孔隙低渗透 凝析气藏 反凝析损害 低损害钻井液 储层保护 |
| 收稿时间： | 2010-11-09 |
| 修稿时间： | 2011-01-20 |
Characteristics of formation damage and protection drilling fluids for condensate gas reservoirs with low-permeability |
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| GENG Jiaojiao,YAN Jienian,DENG Tianqing,YAN Xiaolin,SHU Yong.Characteristics of formation damage and protection drilling fluids for condensate gas reservoirs with low-permeability[J].Acta Petrolei Sinica,2011,32(5):893-899. |
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| Authors: | GENG Jiaojiao YAN Jienian DENG Tianqing YAN Xiaolin SHU Yong |
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| Affiliation: | GENG Jiaojiao1 YAN Jienian1 DENG Tianqing1 YAN Xiaolin2 SHU Yong3 (1.Key Laboratory for Petroleum Engineering of the Ministry of Education,China University of Petroleum,Beijing 102249,China,2.Great Wall Drilling Company Ltd.,CNPC,Beijing 100101,3.Research Institute of Petroleum Exploration & Development,PetroChina,Beijing 100083,China) |
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| Abstract: | Condensate gas reservoirs with low-permeability are characterized by a tiny size of pore throats,poor permeability,high content of clay minerals and severe heterogeneity.Therefore,this type of reservoirs is susceptible to the damage of water sensitivity,water blocking,etc.caused by invasion fluids,and frequently to the damage of specific retrograde condensation.We analyzed mechanisms of formation damage systematically based on reservoir characteristics of the Baka condensate gas reservoir with low-permeabil... |
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| Keywords: | low-porosity and low-permeability condensate gas reservoir retrograde condensation damage low-damaging drilling fluid formation damage control |
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