【摘要】 LNS须家河组二段致密砂岩气藏具有岩性致密、低孔低渗、非均质性强的特点。其砂岩含气储层与页岩夹层的声波传播速度特征相似,常规方法难以有效识别该类含气储层并刻画其平面展布。通过构造及小断层的精细解释确定有利的裂缝发育区,然后在拟声波反演滤除须二段泥质部分的基础上,利用低频增量属性对储层含气性进行检测以降低地震的多解性,在考虑构造裂缝发育程度、流体检测等因素的基础上,确定了研究区须二段有利勘探区域,并建立了有效的储层预测模式,为下一步勘探及井位部署工作提供支持。更多还原

【Abstract】 The favourable fracture development area is determined through the fine interpretation of structure and faults. Then,after filtering the mud through pseudo-acoustic inversion,the gas potential of the reservoir of the 2nd member of Xujiahe formation in LNS area is detected using low frequency increment to decrease the seismic multiplicity. The favourable exploration targets in the 2nd member of Xujiahe formation are determined under considering structure,fracture development and fluid detection result. An effective reservoir prediction mode including fracture prediction and gas detection is established,which provides a technical support for further exploration and well deployment of the studied area.更多还原