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作 者:成友友 穆龙新[1] 朱恩永 张培军 郭春秋[1] 冷有恒 魏占军 陈鹏羽[1] 邢玉忠[1] 程木伟[1] 史海东[1] 张良杰[1]
机构地区:[1]中国石油勘探开发研究院,北京100083 [2]中国石油天然气勘探开发公司,北京100034 [3]CNPC International (TURKMENISTAN), Ashgabat 744000, Turkmenistan
出 处:《石油勘探与开发》2017年第1期89-96,共8页Petroleum Exploration and Development
基 金:国家科技重大专项“阿姆河右岸中区天然气开发示范工程”(2011ZX05059);中国石油天然气集团公司重大专项“土库曼斯坦阿姆河右岸上产165亿方天然气开发关键技术研究与应用”(2011E-2505)
摘 要:以土库曼斯坦阿姆河右岸气田为例,系统研究碳酸盐岩气藏气井出水规律及机理。阿姆河右岸碳酸盐岩气藏主要出水来源为凝析水、工程液和地层水,根据单一与混合2种出水来源,分别建立水性-水气比判别法和氯离子守恒判别法,以此甄别出产出地层水的气井。通过建立产水诊断曲线,将气井出水规律划分为"1型"、"2型"和"3型"3种模式。结合储集层静、动态研究成果综合分析认为:"1型"出水模式气井的储集层类型以孔隙(洞)型为主,出水机理为底水沿基质孔隙的锥进;"2型"出水模式气井的储集层类型以裂缝-孔隙型为主,出水机理为底水沿天然裂缝的突进;"3型"出水模式气井的储集层类型以缝洞型为主,出水机理为底水沿大型缝洞的上窜。The mechanisms of carbonate gas reservoirs were systematically studied with the Right Bank Field of Amu Darya Gas Field, Turkmenistan, as an example. Water produced from the reservoirs has three sources, condensate water, engineering fluids and formation water. The fluid physical property and water-gas ratio (WGR) method for the single component conditions and the chloridion conservation method for the multi-components conditions were established to identify the components contained in the production fluids. A water production diagnosing curve, which refers to the degree of reserve recovery as a function of the water-gas ratio in the log-log coordinate curve, was then established and the formation water producing wells were divided into three patterns, i.e. Type 1, Type 2, and Type 3. Through in-depth studies of the static and dynamic reservoir characteristics of each pattern, the following understandings were attained: The reservoirs of Type 1 are mainly porous, and the water producing mechanism is bottom water coning along matrix pores; the reservoirs of Type 2 are mainly fractured-porous, and the bottom water produces basically through the natural fracture system; the reservoirs of Type 3 are mainly fractured-cavity, and the bottom water produces basically through large-scale fractures and caves.
关 键 词:土库曼斯坦 阿姆河盆地 碳酸盐岩气藏 出水来源 出水机理 产水诊断曲线
分 类 号:TE344[石油与天然气工程—油气田开发工程]
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