School of Geosciences in China University of Petroleum��Qingdao 266580��Shandong��China

The focusing inversion method of gravity gradient tensor data based on depth weighting was pro- posed to avoid“resting on”phenomenon of inversion results�� In the classic Tikhonov regularization theory frame- work��a minimum support functional was introduced to constrain inversion model��which can avoid instability of in- verse problem solution�� And the index depth weighting function was also added in the model objective function to o- vercome the accumulation of density occurring at shallow depths�� Some single components of gravity gradient tensor and their joint- components of theoretical models were inverted based on regularized focusing inversion�� which proves the validity of the regularized focusing inversion method with depth weighting function�� The proposed method was applied to the practical data of Sebei 1 gas field��and the inversion results could well reflect the position of the gas field��