东海低渗储层气井产水来源综合判别方法  

Comprehensive discriminated method for producing-water source of low permeability reservoirs in East China Sea

作　　者：田彬 盛志超[1] 刘梦颖[1] 王健伟[1] 李久娣[2] 盛蔚[1] TIAN Bin;SHENG Zhichao;LIU Mengying;WANG Jianwei;LI Jiudi;SHENG Wei(Institute of Exploration and Development,SINOPEC Shanghai Offshore Oil & Gas Company,Shanghai 200120,China;Oilfield Development Management Department of 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勘探开发研究院,上海200120 [2]中国石油化工股份有限公司上海海洋油气分公司油田开发管理部,上海200120

出　　处：《复杂油气藏》2019年第1期64-68,共5页Complex Hydrocarbon Reservoirs

摘　　要：随着东海油气田勘探开发力度的进一步加大,一些低渗透气田也陆续投入了开发,与常规的中高渗气田不同,部分位于低渗储层的气井缺乏无水采气期,在投产初期即出现了不同程度的产水现象。为了明确气井的产水类型,为后续开发技术政策的调整提供技术指导,研究建立了低渗储层气井产水来源的综合判别方法,对东海一在产低渗气田的产水类型进行了分析。研究表明:低渗储层可能分布范围较广的气水过渡带,位于其中的气井投产后会有可动水产出,通过合理调整配产,可有效延缓井筒积液,保障气田平稳生产。With the further development of oil-gas fields in the East China Sea, some low permeability gas fields have been developed. Differing from the conventional high permeability gas fields, some gas wells in low permeability reservoirs begin to produce water at the beginning of the production and lack of waterless gas recovery period. In order to clarify the producing water type of gas wells and provide technical guidance for the adjustment of subsequent development technical policies, a comprehensive discrimination method for the source of producing water in gas wells of low permeability reservoirs was established. The study showed that there might be a wide range of gas-water transition zone in the low-permeability reservoir, in which a certain amount of movable water will be produced after the gas well is put into production. By reasonable production allocation, the liquid loading in the wellbore can be effectively delayed to ensure the stable production of the gas field.

关 键 词：低渗气藏 水源识别 毛细管压力 层内可动水 

分 类 号：TE348[石油与天然气工程—油气田开发工程]