歧口凹陷沙一段下部碳酸盐岩储层的成岩后生作用研究  

EPIDIAGENESIS OF CARBONATE ROCKS (?)N THE FIRST SUBGROUP OF SHAHEJAI FORMATION IN GIKOU DEPRESSON

作　　者：邓运华 张服民[2] 

机构地区：[1]渤海石油公司研究院 [2]大港油田研究院

出　　处：《石油学报》1990年第4期33-40,共8页Acta Petrolei Sinica

摘　　要：大港油田歧口凹陷沙一段下部碳酸盐岩经历了白云岩化、去白云岩化、胶结、溶蚀、压实、压溶、重结晶及裂缝形成等成岩后生作用。其中溶蚀作用、去白云岩化作用、重结晶作用、裂缝的形成等,对储层有利,尤其是溶蚀作用极大地改善了储层的储集性能;而白云岩化作用、后期胶结作用、压实、压溶作用等,对储层有不利的影响。王徐庄油区为好的储层,歧北凹陷西端为好一中等储层,周清庄油区为中等储层,扣村地区为中一差储层。The epidiagenesis undergone in conbonate rocks of lower SHA-1 in Gikou depression of Dagang oil field includes dolomitization, dedolomi-tization, cementation, dissolution, compaction, pressolution, recrystalliza-tion and fracturing etc. Furthermore, the dissolution, dedolomitization,recrystallization and fracturing is faborable for the reservoir; espically, the dissolution improved greatly the reservoir properties, while dolomit-itation, later-cementation, compaction, and pressoluticn are unfavorable to the reservoir, It is shown that the good, good-moderate, moderate and moderate-poor reservoirs are developed respectively in Wangxizhuang, western Gikou depression, Zhougingzhuang and Kouchen areas.

关 键 词：凹陷 碳酸盐岩 储层 成岩后生作用 

分 类 号：P618.130.2[天文地球—矿床学]