TY - GEN

T1 - A New Method of Joint Inversion of Seismic and Electromagnetic Magnetotelluric Data for Oil and Gas Prospecting on a Continental Shelf

AU - Molodtsov, D. M.

AU - Bobrov, N. Yu.

AU - Polovkov, V.

PY - 2016

Y1 - 2016

N2 - Abstract An effective method of two-dimensional (2D) joint inversion of seismic and electromagnetic (magnetotelluric, MT) data for oil and gas prospecting on Arctic shelf is developed. The inverted data are the first-arrival traveltimes of seismic waves and the components of MT impedance tensor. The employed regularization allows taking into account various prior information about the models of the medium, that increases reliability of inversion. The method develops structural approach to joint inversion and utilizes several structural constraints: cross-gradient, constraint of parallel/antiparallel orientation of the velocity and resistivity gradients, as well as joint total variation. In the present paper we describe basic principles of seismic traveltime tomography and 2D magnetotellurics as well as the corresponding forward problem solvers, which lie in the core of the inverse problem. We also describe the algorithm of joint inversion and the structural constraints it uses. The efficiency of the proposed

AB - Abstract An effective method of two-dimensional (2D) joint inversion of seismic and electromagnetic (magnetotelluric, MT) data for oil and gas prospecting on Arctic shelf is developed. The inverted data are the first-arrival traveltimes of seismic waves and the components of MT impedance tensor. The employed regularization allows taking into account various prior information about the models of the medium, that increases reliability of inversion. The method develops structural approach to joint inversion and utilizes several structural constraints: cross-gradient, constraint of parallel/antiparallel orientation of the velocity and resistivity gradients, as well as joint total variation. In the present paper we describe basic principles of seismic traveltime tomography and 2D magnetotellurics as well as the corresponding forward problem solvers, which lie in the core of the inverse problem. We also describe the algorithm of joint inversion and the structural constraints it uses. The efficiency of the proposed

U2 - 10.2118/181902-MS

DO - 10.2118/181902-MS

M3 - Conference contribution

SN - 978-1-61399-536-5

SP - 14

BT - SPE Russian Petroleum Technology Conference and Exhibition, 24-26 October, Moscow, Russia, Society of Petroleum Engineers

PB - Society of Petroleum Engineers

T2 - SPE Russian Petroleum Technology Conference 2016, RPTC 2016

Y2 - 24 October 2016 through 26 October 2016

ER -