CAJ | 학술논문

通过岩心观察并综合利用普通薄片、铸体薄片和扫描电镜分析等资料，对须二段储层岩石学特征、物性及孔隙结构特征、成岩作用、成岩矿物、成岩环境、所处成岩阶段和成岩演化序列等进行了研究。结果表明，须二段储层经历压实压溶、胶结、溶蚀和破裂等成岩作用，现今处于中成岩 A 期。根据成岩作用类型和强度、成岩矿物及其对储层物性的影响划分出3种成岩相：强压实自生矿物胶结相、强压实不稳定组分溶蚀相和破碎裂缝相。选取了对成岩相较敏感的声波时差、电阻率、自然伽马、密度和中子5条常规测井曲线和成像测井资料，通过岩心资料刻度测井建立了各成岩相的测井识别标准，将成岩相进行剖面展开和平面成图。再根据有利成岩相的平面展布规律，对蓬莱地区须二段优质储层发育带进行了预测，认为平面上的斜坡中部为主要的优质储集层发育区。
통과암심관찰병종합이용보통박편、주체박편화소묘전경분석등자료，대수이단저층암석학특정、물성급공극결구특정、성암작용、성암광물、성암배경、소처성암계단화성암연화서렬등진행료연구。결과표명，수이단저층경력압실압용、효결、용식화파렬등성암작용，현금처우중성암 A 기。근거성암작용류형화강도、성암광물급기대저층물성적영향화분출3충성암상：강압실자생광물효결상、강압실불은정조분용식상화파쇄렬봉상。선취료대성암상교민감적성파시차、전조솔、자연가마、밀도화중자5조상규측정곡선화성상측정자료，통과암심자료각도측정건립료각성암상적측정식별표준，장성암상진행부면전개화평면성도。재근거유리성암상적평면전포규률，대봉래지구수이단우질저층발육대진행료예측，인위평면상적사파중부위주요적우질저집층발육구。
In order to find out distribution zones of high-quality reservoirs in Penglai area,based normal thin sections,casting thin sections,scanning electron microscope analysis data and core data,the reservoirs have been worked on lithological characteristics, reservoir property and pore structure, diagenesis,diagenetic minerals, diagenetic environment, diagenetic stage and diagenetic evolution sequence in Member 2 of Xujiahe Formation.The results show that the reservoirs have experienced diagenesis such as compaction,cementation,corrosion,and fracture,it is now in the stage A of middle diagenetic stage.Three types of diagenetic facies are divided based on diagenesis,diagenetic minerals and their effect on the reservoir quality, these facies include high compaction-authentic minerals cementation facies,high compaction-corrosion of unstable components facies,and tectonic fracture facies.According to various well logging response characteristics,five normal logging curves and imaging logging data which are sensitive to the diagenetic facies are chosen to characterize diagenetic facies,which include compensated neutron logging(CNL),density logging(DEN ),acoustic slowness (AC),natural gamma ray(GR),resistivity log(R t )and EMI,different types of diagenetic facies has various response characteristics on various logging curve and their combination,and the vertical and plane distribution of diagenetic facies can be figured out with well logging data.The favorable diagenetic facies are used to optimize favorable regions of oil and gas bearing zones.The high quality reservoir distributed in the middle part of the slope on the plane surface.