注热水吞吐联合水平井压裂开采水合物数值模拟研究  

Numerical Simulation of Hydrate Recovery by Hot Water Injection Huff and Puff Combined with Horizontal Well Fracturing

作　　者：朱旭晨 杨旭刚 胡杰 孟凡嵩 朱钰青 刘欢 凌童 梁永星 王志猛 ZHU Xu-chen;YANG Xu-gang;HU Jie;MENG Fan-song;ZHU Yu-qing;LIU Huan;LING Tong;LIANG Yong-xing;WANG Zhi-meng(China Oilfield Services Limited,Tianjin 300450,China;CNOOC Research Institute Ltd.,Beijing 100028,China)

机构地区：[1]中海油田服务股份有限公司,天津300450 [2]中海油研究总院有限责任公司,北京100028

出　　处：《价值工程》2023年第33期127-129,共3页Value Engineering

摘　　要：天然气水合物是一种新兴的、储量丰富的清洁能源,但如何高效、持续地开发水合物仍然是困扰科学界的难题。并且中国南海神狐海域赋存泥质孔隙型水合物,储层物性较差,更是加大了水合物的开发难度。为此,提出了一种注热水吞吐联合水平井压裂开采水合物的方法,并通过数值模拟验证了其可行性,同时进行了敏感性分析,模拟结果表明:该方法能够提高水合物分解的波及面积,并为储层提供大量热以保证水合物高效持续的分解,具备良好的可行性。相比于导流能力和裂缝半长,注入温度和日注入量才是影响注热水吞吐联合水平井压裂开采水合物开采效果的重要因素。Natural gas hydrate is a new and abundant clean energy,but how to develop hydrate efficiently and continuously is still a difficult problem for the scientific community.In addition,the Shenhu sea area in the South China Sea has argillaceous pore type hydrate,which has poor physical properties of the reservoir,increasing the difficulty of hydrate development.For this reason,a method of hot water injection huff and puff combined with horizontal well fracturing for hydrate production is proposed,and its feasibility is verified through numerical simulation.At the same time,sensitivity analysis is carried out.The simulation results show that this method can improve the coverage area of hydrate decomposition,and provide a lot of heat for the reservoir to ensure the efficient and sustainable decomposition of hydrate,with good feasibility.Compared with the conductivity and fracture half length,the injection temperature and daily injection volume are the important factors affecting the hydrate production effect of combined horizontal well fracturing with hot water huff and puff.

关 键 词：天然气水合物 数值模拟 压裂 注热水 水平井 

分 类 号：TE122[石油与天然气工程—油气勘探]