CAJ | 학술논문

受技术条件限制，以往采区地震资料多采用叠后时间偏移处理方法。实践证明该方法在地层倾角大、断层发育等地质条件复杂地区，很难准确成像。采用Kirchhoff叠前时间偏移的方法，合理配置参数，可以有效解决速度横向变化不大但倾角变化剧烈条件下三维地震成像精度低的问题。通过对淮北某矿区三维地震老资料应用叠前时间偏移处理结果表明：经过叠前时间偏移处理得到的数据体，其反射波特征明晰，经解释修正原断层7条、否定原断层2条、新发现断层4条，其中修正后的DF3断层已得到矿方的揭露验证，地震解释的断层性质、空间位置与实际揭露情况吻合良好。
수기술조건한제，이왕채구지진자료다채용첩후시간편이처리방법。실천증명해방법재지층경각대、단층발육등지질조건복잡지구，흔난준학성상。채용Kirchhoff첩전시간편이적방법，합리배치삼수，가이유효해결속도횡향변화불대단경각변화극렬조건하삼유지진성상정도저적문제。통과대회북모광구삼유지진로자료응용첩전시간편이처리결과표명：경과첩전시간편이처리득도적수거체，기반사파특정명석，경해석수정원단층7조、부정원단층2조、신발현단층4조，기중수정후적DF3단층이득도광방적게로험증，지진해석적단층성질、공간위치여실제게로정황문합량호。
Limited by technical conditions, previous winning district seismic data processing mostly uses poststack time migration. Prac-tices have shown that the method used in complicated geological condition areas with high strata dip angle, developed faults etc. can hardly to get accurate images. Using Kirchhoff prestack time migration with reasonable parameter configuration can effectively resolve low accuracy of 3D seismic imaging under not large transverse velocity changing but abrupt dip angle variation conditions. The prestack time migration processed result of old 3D seismic data from a Huaibei mine area has shown that the data volume after prestack time migration processing has shown clear reflection characteristics. After interpretation, corrected 7 original interpreted faults, 2 de-nied, 4 newly found, in which, the corrected DF3 has revealed and validated by the coalmine side. The seismic data interpreted fault characters and spatial location can commendably accord with practically revealed.