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T油田发育浅海相碳酸盐岩储层,岩性主要为灰岩、白云岩以及之间的过渡类型。由于碳酸盐岩储层广泛发育裂缝,而仅通过常规测井资料和成像测井资料无法深入分析裂缝有效性。为此,研究用正交偶极声波(WSTT)资料结合成像测井资料进行裂缝评价,主要进行了有效性和渗透性的评价。研究证实,成像图上拾取的张开缝并不一定是有效缝。该油田白垩系C地层裂缝区域有效性最好,A、B次之,D最差。通过偶极声波资料的应用,对T油田的裂缝有了更深入的认识。
T oilfield development of shallow marine carbonate reservoir, lithology is mainly limestone, dolomite and transitional type between. Due to the extensive development of fractures in carbonate reservoirs, fracture validity can not be analyzed in depth by conventional well logging and imaging logging data. To this end, the study using orthogonal dipole sound (WSTT) data combined with imaging logging data for fracture evaluation, mainly for the effectiveness and permeability evaluation. The research confirmed that the open slits picked up on the image are not necessarily effective seams. The fractured area of Cretaceous C in the oil field is the best, followed by A and B, and D is the worst. Through the application of dipole sonic data, we can get a deeper understanding of the cracks in T oilfield.