CAJ | 학술논문

前中生界不整合是库车东地区一个非常重要的不整合面，是海西晚期运动的直接产物。通过三维地震解释结合钻井和区域地质资料，分析了前中生界不整合的不整合类型、平面分布规律及其对油气藏的控制作用。研究表明，前中生界不整合主要发育平行不整合、异常不整合、削截不整合和超覆不整合。平行不整合分布在阿克库勒凸起，雅克拉断凸东段分布异常不整合，削截不整合与超覆不整合分布在库车拗陷。与不整合相关的圈闭类型有两种，不整合面之上的地层超覆圈闭和不整合面之下的古潜山圈闭。前中生界不整合是油气侧向运移的有利通道，油气沿不整合由拗陷中心向南运移，进入与不整合有关的圈闭后聚集成藏。
전중생계불정합시고차동지구일개비상중요적불정합면，시해서만기운동적직접산물。통과삼유지진해석결합찬정화구역지질자료，분석료전중생계불정합적불정합류형、평면분포규률급기대유기장적공제작용。연구표명，전중생계불정합주요발육평행불정합、이상불정합、삭절불정합화초복불정합。평행불정합분포재아극고륵철기，아극랍단철동단분포이상불정합，삭절불정합여초복불정합분포재고차요함。여불정합상관적권폐류형유량충，불정합면지상적지층초복권폐화불정합면지하적고잠산권폐。전중생계불정합시유기측향운이적유리통도，유기연불정합유요함중심향남운이，진입여불정합유관적권폐후취집성장。
Pre-Mesozoic unconformity is an important unconformity in Kuchedong Area,which is the direct product of the late Hercynian movement. Based on 3D seismic interpretation data,combined with well drilling data and regional geology, we analyzed the main unconformity types,planar distribution of pre-Mesozoic unconformity and its control over oil and gas reservoirs. The research shows that the types of the unconformity can be divided into parallel unconformity,abnormal unconfor-mity,truncation unconformity and overlaping unconformity. Parallel unconformity mainly occurs in Akekule uplift,abnormal unconformity exists in the eastern part of the Yakela faulted uplift,and truncation unconformity and overlaping unconformity occur in Kuqa Depression. There are two types of unconformity related traps;stratigraphic overlaping trap above the unconfor-mity surface and buried hill traps below the unconformity. Pre-Mesozoic unconformity is favorable oil and gas lateral migration channel. Oil and gas migrate along the unconformity from the depression center to south,and enter unconformity related traps forming oil and gas reservoirs.