碳酸盐岩气藏气井出水机理分析——以土库曼斯坦阿姆河右岸气田为例

发布时间：2018-06-05 01:02

本文选题：土库曼斯坦 + 阿姆河盆地　；参考：《石油勘探与开发》2017年01期

【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。
[Abstract]:Taking the gas field on the right bank of the Amu River of Turkmenistan as an example, the rule and mechanism of the outlet water of carbonate gas reservoir are systematically studied. The main effluent sources of carbonate gas reservoirs on the right bank of Amu River are condensate water, engineering fluid and formation water. According to the single and mixed water sources, the water-water / water gas ratio discrimination method and the chlorine ion conservation discrimination method are established respectively. In this way, gas wells producing formation water are identified. Through the establishment of water production diagnosis curve, the rule of gas well effluent is divided into "1 type", "2 type" and "3 type". Based on the comprehensive analysis of reservoir static and dynamic research results, it is concluded that the reservoir types of "type 1" outlet gas wells are mainly pore (hole) type. The outlet mechanism is the coning of bottom water along the matrix pore, the reservoir type of "type 2" outlet model is mainly fracture-pore type, the mechanism of outlet water is the penetration of bottom water along natural fracture, and the reservoir type of "type 3" outlet model gas well is mainly fracture-cavity type. The mechanism of effluent is the upward channeling of bottom water along the large joint and hole.
【作者单位】：中国石油勘探开发研究院;中国石油天然气勘探开发公司;CNPC
【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)
【分类号】：TE37

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