震测逆推结合古构造复原之三维地层孔隙压力梯度分析-中国矿冶工程.PDF

震測逆推結合古構造復原之三維地層孔隙 壓力梯度分析* A nalysis of 3D Formation Pore Pressure Gradient by Integrating Seismic Inversion and Structural Restoration* 1 2 1 1 1 2 1 1 S.C. Fuh , Y.L. Yang , C.P. Lee , L.C. Feng In th i s st u dy, st r u ct u r e r e st or at ion Kan and Swan( 2001) and seism ic inver sion were integr ated to construct Kan and Swan (2001) geopressure model to overcome the multi P-sonic trend p r ob lem o c cu r r e d in t h e sou t hw e st er n foothill of Taiwan . The geopressure model systematically predict the p seudo 3D pore f lu id p r e ssu r e gr a d ient in H sin sh i an d Kan and Swan Yunkung area . P-sonic logs from 9 wells t : P(z)/z were used to estimate the amount of uplift = 10.3 Kpa/M+0.018127* t+0.000115*( t)2 at the well locations. Pressure data from 5 ( 1). wells were used to perform the multi-linear (2). regression of pressure gradient prediction equations in the paleo-depth domain : P(z)/z 2 =10.3 Kpa/M+0.018127*t+0.000115*(t) . (3). The pseudo 3D pore fluid pressure gradient (4). d et er m i n e d i n t h i s st u dy sh ow e d t h at th e over pr essu r ed zon e in th e N iaot su i for m at ion p enetr at ed by the H SS-1 well extends southwestward to the Yunkung area. 關鍵詞： Key words: