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.
作者
孙金声
程远方
秦绪文
孙友宏
金衍
王志远
李淑霞
陆程
屈沅治
吕开河
王成文
王金堂
王韧
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)
出处
《中国科学基金》
CSSCI
CSCD
北大核心
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。
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
natural gas hydrate in the South China Sea
drilling&production engineering
mechanical properties
wellbore working fluid
phase transformation and seepage characteristics
作者简介
通信作者:孙金声,中国石油大学(华东)教授、中国石油集团工程技术研究院有限公司总工程师、中国工程院院士,现任油气钻井技术国家工程实验室主任、非常规油气开发教育部重点实验室主任。承担国家自然科学基金重大项目、重点项目,国家863计划项目、国家科技重大专项和省部级重大科技课题50余项。长期致力于油气井工程理论与技术创新,首创水基钻井液化学成膜理论,发明了抗温240℃高密度水基钻井液和抗温300℃泡沫钻井流体,研发出复杂结构井高性能钻井液。发表学术论文140余篇,授权国家发明专利48件、美国发明专利9件。获国家科技进步奖二等奖2项、国家技术发明奖二等奖1项,Email:sunjsdri@cnpc.com.cn。
