2017年12月第36卷第6期
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
DOI：10.19597/J.ISSN.1000-3754.201701060
渤海海域旅大16构造沙三段沉火山碎屑岩
储层物性及形成机理
刘晓健王清斌冯冲卢欢郝轶伟
（中海石油有限公司天津分公司，天津300459）
Dee.，2017 Vol. 36 No. 6
摘要：潮海海域旅大16构造沙三段沉火山碎屑岩储层受火山碎屑物质和沉积作用双重控制，但优质储层形成机理尚不清楚。综合应用井壁取心、铸体薄片、测井曲线等资料，对沉火山碎屑岩储层致密成因及相对高渗储层主控因素进行了研究。结果表明：临近物源区的储层岩石成分成熟度和结构成熟度较低，成岩过程中形成大量搭桥状伊利石充填了孔隙，富铁、镁的安山岩岩屑蚀变析出细小黄铁矿品族，呈星散状密集分布在粒间，储层中毛管束缚水含量高是储层致密的主要成因；沉积期风化淋滤作用及后期成岩作用形成的高岭石对储层起到支撑和保护作用，酸性火山岩岩屑在埋藏过程中生成大量环颗粒分布的维品石英，能够起到抗压实和抑制伊利石
生长的作用，酸性火山岩岩屑相对易溶蚀面形成次生孔隙，是局部相对高渗储层的主要成因。关键词：旅大16构造；沉火山碎屑岩；储层；致密成因；形成机理
中图分类号：TE122.2
文献标识码：A
文章编号：1000-3754（2017）06-0040-07
PHYSICALPROPERTIESANDTHEIRGENERATINGMECHANISMSFOR
MEMBERSHA-3SEDIMENTARYPYROCLASTICROCK RESERVOIRSINSTRUCTURELD-16OFBOHAIBAY
LIU Xiaojian,WANG Oingbin,FENG Chong,LU Huan,HAO Yiwei
(Bohai Petroleum Institute of CNOOC Co Lud.Tianjin Branch,Tianjin 300459,China)
Abstract: Member Sha-3 sedimentary volcaniclastic reservoirs in Structure LD-16 of Bohai Bay are both controlled by the volcaniclastic matters and sedimentation, but the forming mechanisms of the high-quality reservoir are still left in the air. Comprehensively integrated with the sidewall coring, cast thin section, well logging data and so on, the compactness genesis and the key origin of the high-permeability reservoir of the sedimentary volcaniclastic reser-voir were researched. The results show that the maturities of both the reservoir rock components and the structures quality near the provenances are rather lower, a large number of the bridge-like illite are generated during the dia-genesis and fill the pores, the fine pyrite crystals are precipitated by the ferrite/magnesium-enriched andesite debris alteration and densely distributed between the particles, a large number of the capillary irreducible water in the res-ervoir is the key origin of the compactness; the kaolinite resulted from the weathering and leaching actions during
收稿日期：2017-01-25
改回日期：2017-07-05
基金项目：国家科技重大专项“近海隐藏蔽油气藏勘探技术”（2011ZX05023-002)；中海油重大科技项目“中国近海低孔
低渗油气藏勘探开发关键技术与实践”（CNOOC-KJ125ZDXM07LTD-TJ-02）。
作者简介：刘晓健，男，1987年生，工程师，从事沉积储层方面研究工作。E-mail;liuxj14@cnooc.com.cn
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