南海天然气水合物钻采机理与调控研究进展  

Research Progress on Natural Gas Hydrate Drilling&Production in the South China Sea

作　　者：孙金声[1,2] 程远方 秦绪文[3,4] 孙友宏[5] 金衍 王志远 李淑霞[1] 陆程[4,7] 屈沅治[2] 吕开河 王成文 王金堂[1] 王韧[2] Sun Jinsheng;Cheng Yuanfang;Qin Xuwen;Sun Youhong;Jin Yan;Wang Zhiyuan;Li Shuxia;Lu Cheng;Qu Yuanzhi;Lyu Kaihe;Wang Chengwen;Wang Jintang;Wang Ren(China University of Petroleum(East China),Qingdao 266580;CNPC Engineering Technology R&D Company Limited,Beijing 102206;China Geological Survey,Beijing 100037;Guangzhou Marine Gedogical Survey,Guangzhou 510075;China University of Geosciences(Beijing),Beijing 100083;China University of Petroleum(Beijing),Beijing 102249;Oil and Gas Resources Investigation Center,China Geological Survey,Beijing 100083)

机构地区：[1]中国石油大学(华东),青岛266580 [2]中国石油集团工程技术研究院有限公司,北京102206 [3]中国地质调查局,北京100037 [4]广州海洋地质调查局,广州510075 [5]中国地质大学(北京),北京100083 [6]中国石油大学(北京),北京102249 [7]中国地质调查局油气资源调查中心,北京100083

出　　处：《中国科学基金》2021年第6期940-951,共12页Bulletin of National Natural Science Foundation of China

基　　金：到国家自然科学基金项目(51991360)的资助。

摘　　要：海域天然气水合物试采存在井壁易失稳、井漏、流动安全风险高、储层改造困难、单井日产气量低、稳产时间短等一系列技术难题,水平井、多分支井等有望提高产气量的复杂结构井钻采难度更大。本文基于对国内外水合物钻采研究进展以及已开展天然气水合物勘探、试采工程现状的跟踪调研,总结分析了海域天然气水合物试采面临的关键技术难题,进而根据我国南海天然气水合物试采工程特性,对天然气水合物储层力学特性动态演化规律及工程响应机制、井筒工作液与天然气水合物储层作用机理和调控方法、天然气水合物钻采井筒多相流动障碍形成机制与安全控制方法、储层天然气水合物相变和渗流多场时空演化规律、天然气水合物储层结构改造理论与高效开发模式等方面研究进展进行了论述,以期为我国海域天然气水合物钻采理论及技术的发展提供借鉴。The offshore natural gas hydrate production test is facing a series of technical problems,such as wellbore instability,well leakage,high risk of flow safety,difficulty in reservoir reconstruction,low daily production of a single well,and short time of stable production.Complex structure wells,like horizontal wells and multi-branch wells,which could hopefully increase gas production,are restricted by many obstacles.In this work,the research progress of global hydrate drilling,gas hydrate exploration,production test is tracked and investigated.The key technical problems faced by offshore natural gas hydrate are summarized and analyzed.Combined with the characteristics of the natural gas hydrate production test in the South China Sea,research progress is discussed including hydrate reservoir characteristics,wellbore working fluid technology,multiphase flow obstacle and safety control,hydrate phase transition and reservoir seepage law,reservoir stimulation methods and highly effective development model.The above results are expected to provide a reference for the development of offshore natural gas hydrate drilling&production theory and technology in China.

关 键 词：南海天然气水合物 钻采工程 力学特性 井筒工作液 相变及渗流特征 

分 类 号：TE5[石油与天然气工程—油气田开发工程]