马遵敬;刘彦成;李辉;曹鹏飞;

• 1:中海油能源发展股份有限公司工程技术分公司
• 2:中国石油勘探开发研究院
• 3:中联煤层气有限责任公司研发中心

摘要(Abstract)：

鄂尔多斯盆地东缘盒4段含气层普遍具有低阻特征，识别难度较大，且成因机理尚不明确，制约了储层产能评价和预测工作的开展。为实现盒4段致密气藏天然气高效开发，在总结该区低阻气层测井响应特征的基础上，基于岩心分析、地层水组分、测井、试气和生产资料分析，从宏观和微观两个方面入手，开展区内气层低阻成因研究。研究表明：该区低阻气层发育的主控因素有两个方面，宏观上主要由沉积作用和成岩作用从根本上决定储层的岩性、孔隙结构及地层水特征等，控制低阻气层的发育及分布；微观方面主要是因复杂孔隙结构引起高饱和度束缚水(毛细管水)而形成较好的导电网络导致低阻；此外，薄膜型的黏土矿物及金属矿物直接或间接增加导电性引起气层低阻，高矿化度地层水或泥浆侵入以及砂泥岩薄互层亦可引起低阻。

关键词(KeyWords)： 低阻气层;成因机理;盒4段;鄂尔多斯盆地

Abstract:

Keywords:

基金项目(Foundation): 中海油发展科技项目“临兴区块致密砂岩气藏储层伤害评价及预防技术研究”(HFKJ-GJ2020-02);; 中海石油中国有限公司重大科技专项“中联公司上产60亿方关键技术研究”(CNOOC-KJ 135 ZDXM 40)

作者(Authors): 马遵敬;刘彦成;李辉;曹鹏飞;

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