FIELD: oil and gas industry.
SUBSTANCE: there are suggested a method and a device for identification of a value and inverse velocity of a wave in a bed, located around a well. The conception of fresnel volume is applied for kinematics tomography. The fresnel volume reflects the way of an acoustic wave propagation in the vicinity of a well. The implementation of the fresnel volume for data of acoustic survey facilitates a stable solution of an inverse problem and possibility of practical realisation of three dimensional (3-D) tomography. The solution of the inverse problem is achieved by the method of the iterative inverse projection.
EFFECT: facilitates a stable solution of the problem of identification of value and inverse velocity of a wave in a bed, located around a well, and also facilitates a practical realisation of a three dimensional tomography.
42 cl, 6 dwg
