CAJ | 학술논문

本文以姬塬油田西北部长91储集岩为研究对象，基于岩心及镜下薄片观察，测井资料分析等手段，通过岩石学特征，孔隙类型，物性特征等方面对储层进行研究，分析其储集特征、主控因素并对其评价。结果表明：姬塬西北部长91储集岩主要孔隙类型为剩余原生粒间孔、粒间及粒内溶孔和黏土矿物微孔；其平均孔隙度为9．95％，平均渗透率为1．05mD，属低孔、低-特低渗储层。储层展布及物性主要受沉积环境及成岩作用的影响，分流河道是储层发育最有利相带；压实和胶结作用降低了储层物性，但绿泥石环边胶结对原生粒间孔隙起到保护作用，而长石和浊沸石的溶蚀改善了储层的储集性能。根据沉积特征、物性特征、储集空间等要素划分出五类储层，沿分流河道中心分布的I类和Ⅱ类储层为有利区，分布于分流河道边部的Ⅲ、Ⅳ类储层为较有利区。
본문이희원유전서북부장91저집암위연구대상，기우암심급경하박편관찰，측정자료분석등수단，통과암석학특정，공극류형，물성특정등방면대저층진행연구，분석기저집특정、주공인소병대기평개。결과표명：희원서북부장91저집암주요공극류형위잉여원생립간공、립간급립내용공화점토광물미공；기평균공극도위9．95％，평균삼투솔위1．05mD，속저공、저-특저삼저층。저층전포급물성주요수침적배경급성암작용적영향，분류하도시저층발육최유리상대；압실화효결작용강저료저층물성，단록니석배변효결대원생립간공극기도보호작용，이장석화탁비석적용식개선료저층적저집성능。근거침적특정、물성특정、저집공간등요소화분출오류저층，연분류하도중심분포적I류화Ⅱ류저층위유리구，분포우분류하도변부적Ⅲ、Ⅳ류저층위교유리구。
Based on the observation of core samples,thin sections and well log data analysis method, through the petrography,pore types and reservoir physical properties of the chang-9 1 oil reservoir in the northwest area of Jiyuan oilfield,this article discussed reservoir characteristics,the main controlling factors and the evaluation of reservoir in the study area.The research demonstrates that the main types of the pores in the reservoir are residual primary intergranular pores,intergranular- intragranular dissolved pores and clay minerals micropores.The average porosity and permeability of the the chang-91 oil reservoir is about 9.95% and 1.05mD respectively,so it is a typical reservoir with low porosity and permeability. Development of the reservoirs is obviously controlled by sedimentary evironment and diagenesis. Distributary channel is the best reservoir facies, even the porosity of the reservoir was reduced by compaction and cementation,but the rim cementation of chlorite protected the primary intergranular pores availably.Moreover, the corrosion of feldspar and laumontite also improved the performance of the reservoir.Five types of the reservoir have been distinguished according to the research of its sedimentary characteristics,physical characteristics,reservoir space and so on.Class I and II which distribution along the center of the distributary channel are favorable areas,class Ⅲ and Ⅳ which distribution along the edge of the distributary channel are secondary favorable areas.