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简要论述了偶极横波成像(DSI)测井的测井原理和各向异性的处理方法,阐述了利用DSI横波各向异性资料评价地层各向异性和地应力方向的理论依据。对准噶尔盆地董2井碎屑岩地层的偶极横波成像(DSI)测井资料进行了处理分析,并利用处理结果对该井的地层各向异性和地层最大水平地应力进行了评价。研究表明,DSI测井的横波各向异性资料在判断地层各向异性、确定地应力方面具有良好的应用前景。
The logging principle and anisotropic processing method of dipole shear wave imaging (DSI) logging are briefly discussed. The theoretical basis for evaluating the anisotropy of formation and the direction of geostress using the shear wave anisotropy data of DSI is expounded. The dipole shear imaging (DSI) logging data of clastic rocks in Dong 2 well in Junggar Basin are analyzed and processed. The strata anisotropy and the maximum horizontal formation stress of the well are evaluated by the results. The research shows that the shear wave anisotropy data of DSI logging have good application prospect in determining the anisotropy of formation and determining the geostress.