天然气地球科学 ›› 2022, Vol. 33 ›› Issue (4): 556571.doi: 10.11764/j.issn.1672-1926.2021.11.004
王珂1,2(),张荣虎1,2,王俊鹏1,2,余朝丰1,2,杨钊1,2,唐雁刚3
Ke WANG1,2(),Ronghu ZHANG1,2,Junpeng WANG1,2,Chaofeng YU1,2,Zhao YANG1,2,Yan′gang TANG3
摘要:
塔里木盆地库车坳陷北部构造带和克拉苏构造带处于同一区域构造背景,发育相似的石油地质条件,含气目的层系分别为侏罗系阿合组和白垩系巴什基奇克组,储层特征是造成勘探开发效果差异的重要因素。系统开展阿合组与巴什基奇克组储层特征对比,对2个构造带的勘探开发均具有重要启示意义。利用岩心、薄片和成像测井等资料,从储层沉积背景、储层基质与裂缝特征以及储层敏感性等角度出发,开展阿合组和巴什基奇克组的储层特征对比分析,并在此基础上得到了2点勘探开发启示。结果表明:构造样式是控制优质储层分布的重要因素,克拉苏构造带构造样式主要为逆冲推覆作用下形成的断背斜,背斜长轴为巴什基奇克组裂缝性储层的有利分布区,在此部署井位有较大概率获得高产;北部构造带构造样式复杂,多因素控制下的阿合组裂缝—孔隙型储层成因机制和优质储层预测还需开展深入研究。储层特征与流体环境是储层改造措施制定的重要依据,巴什基奇克组储层方解石胶结物含量高、地层流体为酸性、储层酸敏性弱、构造裂缝发育,可采用酸化和压裂并举的储层改造措施;阿合组储层方解石胶结物含量低、地层流体为碱性、储层具中等酸敏性、构造裂缝较发育,储层改造措施应以压裂为主。
中图分类号:
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