CAJ | 학술논문

综合运用岩心、物性数据、钻采资料、试油和测井解释等资料,运用分布函数曲线法、含油产状法、孔隙度—渗透率交会法及试油法,共同确定查干凹陷苏一段碎屑岩有效储层物性下限值,并根据试油结果进行验证.在此基础上分析了岩性、成岩作用和沉积相对有效储层的影响.结果表明,辫状河三角洲前缘水下分流河道砂体物性最好,其次为扇三角洲前缘水下分流河道砂体,滑塌浊积扇砂体物性最差; 从不同岩性的孔隙度分布区间来看,有效储层主要发育在砂砾岩及细砂岩中,含砾砂岩次之,砾状砂岩及粉砂岩有效储层发育最差.压实作用减少的孔隙度平均为16.96%,胶结作用减少的孔隙度平均为8.5%,对有效储层物性变差影响较大; 酸性溶蚀作用增加的孔隙度平均为5.28%,可改善储层物性.总体上,储层物性主要受到沉积相和成岩作用两大因素控制,沉积相对有效储层的控制作用强于成岩作用.
종합운용암심、물성수거、찬채자료、시유화측정해석등자료,운용분포함수곡선법、함유산상법、공극도—삼투솔교회법급시유법,공동학정사간요함소일단쇄설암유효저층물성하한치,병근거시유결과진행험증.재차기출상분석료암성、성암작용화침적상대유효저층적영향.결과표명,변상하삼각주전연수하분류하도사체물성최호,기차위선삼각주전연수하분류하도사체,활탑탁적선사체물성최차; 종불동암성적공극도분포구간래간,유효저층주요발육재사력암급세사암중,함력사암차지,력상사암급분사암유효저층발육최차.압실작용감소적공극도평균위16.96%,효결작용감소적공극도평균위8.5%,대유효저층물성변차영향교대; 산성용식작용증가적공극도평균위5.28%,가개선저층물성.총체상,저층물성주요수도침적상화성암작용량대인소공제,침적상대유효저층적공제작용강우성암작용.
Based on the drilling core, physical property, drilling, well testing and well logging data, the lower property limit of the first member of Suhongtu Formation in Chagan Sag was determined by applying distribution function curve meth-od, occurrence method of oiliness, convergence method of porosity and permeability and production test method which were certificated by actual data measurement. On this basis, we analyzed the effects of lithology, sedimentary facies, and dia-genetic on the formation of effective reservoir rocks. Results showed that:the physical property of braid river-deltaic front subaqueous distributary channel was the best, secondly was the fan-deltaic front subaqueous distributary channel, and the physical property of fluxoturbidite sand body was the worst. From different proportion area property occupied of different li-thology of view, effective reservoir mainly developed in fine conglomerate and sandstone, pebbly sandstone was the second, and brecciated sandstones and siltstones were the worst. In diagenesis, compaction was 16. 96%. The averaging decreasing property because of cementation was 8. 5% and its influence to effective reservoir was obvious. The averaging decreasing property because of acidic corrosion was 5. 28%, having significant results on reconstructing reservoir as preponderance val-id reservoir. On the whole, reservoir properties were controlled mainly by raw material basis and diagenesis, and the con-trol on valid reservoir of sedimentary facies was stronger than lithology.