CAJ | 학술논문

成藏过程精细解剖是油气富集规律和选区评价研究的基础。通过流体包裹体的显微赋存状态描述、均一温度测定，指出烃类包裹体主要赋存在石英次生加大边和切穿加大边的微裂隙以及方解石胶结物中，均一化温度主频在130～150℃。成岩史与埋藏史分析表明随着烃源岩成熟度的增加，后期生成的高成熟度天然气向上运移，首先将低部位圈闭中的原油驱替到构造高部位的圈闭，形成现今SN189井和SN183井中的油藏，邻近生烃中心的SN115井储层中残余沥青正是这期原油裂解的产物。后期形成的天然气沿断层向上运移聚集，形成SN182井的天然气藏，该井的流体包裹体以天然气为主。因此，沿断层向上倾方向，液烃包体含量越来越少，天然气包裹体含量增多，现今构造高部位为油藏，低部位为气藏，油、气同源。长岭断陷的坳陷区和斜坡区的古构造、砂岩上倾尖灭和砂岩透镜体油气藏是天然气勘探的主要方向。
성장과정정세해부시유기부집규률화선구평개연구적기출。통과류체포과체적현미부존상태묘술、균일온도측정，지출경류포과체주요부존재석영차생가대변화절천가대변적미렬극이급방해석효결물중，균일화온도주빈재130～150℃。성암사여매장사분석표명수착경원암성숙도적증가，후기생성적고성숙도천연기향상운이，수선장저부위권폐중적원유구체도구조고부위적권폐，형성현금SN189정화SN183정중적유장，린근생경중심적SN115정저층중잔여력청정시저기원유렬해적산물。후기형성적천연기연단층향상운이취집，형성SN182정적천연기장，해정적류체포과체이천연기위주。인차，연단층향상경방향，액경포체함량월래월소，천연기포과체함량증다，현금구조고부위위유장，저부위위기장，유、기동원。장령단함적요함구화사파구적고구조、사암상경첨멸화사암투경체유기장시천연기감탐적주요방향。
Research on hydrocarbon accumulation process is the basis for studying hydrocarbon enrichment patterns and identifying favorable areas for petroleum exploration .Based on the microscopic description of fluid inclusion and analysis of homogenization temperature , hydrocarbon inclusions mainly occur in the secondary quartz overgrowth , microfractures crossing these overgrowth and calcite cement .The dominant frequency of homogeneous temperature was 130-150 ℃. The diagenetic history and burial history show that high maturity natural gas migrated upward with maturing of hydrocar -bon source rock and displaced the oil accumulated in the lower traps into the higher traps ,resulting in the formation of Well SN189 and Well SN183 accumulations.Residual asphalt in the Yingcheng Formation in Well SN 115,which is near the hydrocarbon generation center ,was the product of crude oil pyrolysis in this period .Natural gas generated during later period migrated upward along the fault and formed Well SN 182 natural gas pool where the inclusions are mainly of natu-ral gas.As a result,along the fault up-dip direction,the number of liquid hydrocarbon inclusions gradually decreases , while the number of natural gas inclusions gradually increases .Oil accumulated in the higher position ,and gas accumula-ted in the lower parts .The oil and gas share the same hydrocarbon source .Up-dip pinchout sandstone and sandstone lens in the depression and slope area of Changling rift are the main targets for natural gas exploration .