齐家地区泉头组四段成岩作用及其对储层物性的影响  

Diagenesis and Its Effect on Physical Properties of Reservoir of No.4 Section of Quantou Formation in North Qijia Area

作　　者：熊庆莉 

机构地区：[1]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《西部探矿工程》2014年第4期27-30,35,共5页West-China Exploration Engineering

基　　金：国家重大科技专项(编号:2011ZX05001-001-04)资助

摘　　要：对松辽盆地齐家地区泉头组四段砂岩岩石学特征、孔隙类型与物性特征、胶结物类型及成岩作用的详细研究表明,泉头组四段储集层岩石类型以长石岩屑砂岩和岩屑长石砂岩为主,主要的成岩作用包括机械压实、胶结作用、交代作用、溶解作用,成岩演化处于中成岩阶段A期和B期。压实作用是导致砂岩储层质量变差的主要原因之一;碳酸盐是造成砂岩物性降低的主要胶结物,其次是石英次生加大,再次是粘土矿物胶结。长石和方解石的溶解作用是次生孔隙发育的主要控制因素,从而改善砂岩储层质量。Detailed study on the rock property, pore types, measured porosity and permeability, cement and diagenesis of sandstones of the Member 4 Quantou Formation reservoir in North Qijia area of Songliao Basin indicates that the reservoir mainly consists of feldspathic litharenite and litharenite arkose. The main diagenesis includes mechanical compaction, cementation, metasomatism and dissolution, which evolvement is at A and B stage of middle phase of diagenesis. Compaction is one of the main factors which reduced the reservoir quality. Carbonate is the major cement resulting in the loss of porosity, secondly quartz overgrowths and followed by clay mineral. The dissolution of feldspar and calcite in the reservoir rocks is the main factor of the development of the secondary porosity, which can improve reservoir quality of the sandstones.

关 键 词：成岩作用 泉头组四段 储层物性 齐家地区 松辽盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]