CAJ | 학술논문

基于岩屑、岩心分析化验及生产动态等资料,对姬塬油田长4＋5储层的岩石学特征、成岩作用进行了研究。该区储层砂岩类型以长石砂岩为主,岩屑质长石砂岩次之;储层岩石经历了机械压实作用、胶结作用和溶蚀作用等成岩作用。根据姬塬油田延长组长4＋5储层成岩作用参数及其定量评价标准,判别长4＋5储层视压实率值范围为43%～64%,属于中等压实,视溶蚀率在40%～80%之间,属中-强溶蚀,视胶结率值均大于70%,均属于强胶结。
기우암설、암심분석화험급생산동태등자료,대희원유전장4＋5저층적암석학특정、성암작용진행료연구。해구저층사암류형이장석사암위주,암설질장석사암차지;저층암석경력료궤계압실작용、효결작용화용식작용등성암작용。근거희원유전연장조장4＋5저층성암작용삼수급기정량평개표준,판별장4＋5저층시압실솔치범위위43%～64%,속우중등압실,시용식솔재40%～80%지간,속중-강용식,시효결솔치균대우70%,균속우강효결。
This paper discusses the petrology and digenesis of the Chang 4＋5 reservoir in Jiyuan oilfield on basis of the cuttings,cores,and other data.The results show the reservoir rocks are mainly arkose and lithic arkose which undertakes digenetic processes including mechanical compaction,cementation and dissolution.In addition,the apparent compaction percentage of the reservoir varies from 43% to 64% with the moderate compaction,while the apparent dissolution is from 40% to 80% with moderate to strong dissolution,and the apparent cementation has a higher value than 70% with strong cementation.