CAJ | 학술논문

西湖凹陷受区域构造应力场作用，经历了断陷、坳陷和区域沉降三个演化阶段。平北区位于西湖凹陷西部斜坡区中部，在区域构造作用背景下，不同的演化阶段发育了不同规模、不同性质以NE~NNE向为主、NW向为辅的两组断裂。这些断裂平面上具有明显的方向性、南北分段性；垂向上具有分层性。近年来在平北进行了三维地震重采集，通过新三维精细解释，弄清了该区断层发育特征。通过近年在该区的钻探实践证实，该区断裂系统对油气成藏具有明显的控制作用。
서호요함수구역구조응력장작용，경력료단함、요함화구역침강삼개연화계단。평북구위우서호요함서부사파구중부，재구역구조작용배경하，불동적연화계단발육료불동규모、불동성질이NE~NNE향위주、NW향위보적량조단렬。저사단렬평면상구유명현적방향성、남북분단성；수향상구유분층성。근년래재평북진행료삼유지진중채집，통과신삼유정세해석，롱청료해구단층발육특정。통과근년재해구적찬탐실천증실，해구단렬계통대유기성장구유명현적공제작용。
The Xihu Sag has been affected by regional tectonic stress fields related to three stages of evolution: rift, depression, and regional subsidence. The Pingbei area is located in the center of the western slope region of the Xihu Sag. In response to the regional tectonic regime, two sets of faults have formed, trending mainly NE-SW to NNE-SSW with a secondary direction of NW-SE, with different scales and characteristics because of their formation during different evolutionary stages. These faults have preferred orientations and are segmented from north to south. Recently, three-dimensional seismic data have been col ected and interpreted to al ow a thorough investigation of the characteristics of fault development in the Pingbei area. The data show that the accumulation of hydrocarbons in the area is control ed mainly by the fault system.