西湖凹陷深部储层物性特征及其影响因素

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英文篇名：Physical Characteristics and Influencing Factors of Deep Reservoirs in Xihu Sag 作者：袁竞 ; 陆洋 ; 李喆 英文作者：YUAN Jing;LU Yang;LI Zhe;Institute of Exploration and Development, SINOPEC Shanghai Offshore Oil & Gas Company; 关键词：西湖凹陷 ; 深部储层 ; 次生孔隙 ; 地层构型 英文关键词：Xihu Sag;;deep reservoirs;;secondary pores;;stratigraphic texture 中文刊名：HYSY 英文刊名：Offshore Oil 机构：中国石油化工股份有限公司上海海洋油气分公司勘探开发研究院; 出版日期：2019-06-22 出版单位：海洋石油 年：2019 期：v.39;No.181 语种：中文; 页：HYSY201902003 页数：6 CN：02 ISSN：31-1760/TE 分类号：16-21

摘要

依据已钻井的物性测试、铸体薄片等基础资料,通过分析西湖凹陷深部储层内的沉积、岩石学特征、物性、孔隙类型及分布特征,表明该区砂岩储层的岩石成分相对较杂、成熟度中等,但长石、岩屑等可溶性成分含量高,易被溶蚀形成大量次生孔隙,对储层物性有积极改善作用。保俶斜坡带平湖组砂岩属潮汐三角洲前缘分流河道、潮汐砂坝,"泥包砂"垂向交互方式的地层构型特点有利于形成多期次次生孔隙带;中央背斜带花港组砂体属辫状河道、辫状分流河道微相,砂体分布广,具备下粗上细的地层结构,属"旋回式"侧向交互方式的地层构型,在与深洼泥岩连通的方向上有利于厚层砂体的溶蚀改造,具备形成大型油气藏的有利条件。
        Based on the basic data of physical properties and thin sections, the sedimentary, petrological characteristics, physical properties, pore types and distribution characteristics of the deep reservoirs in Xihu Sag are analyzed. It shows that the deeps and stone reservoirs have multiplicity rock composition and medium component maturity. The content of soluble components such as feldspar and cuttingsis favorable are high. It is easy to be dissolved to form a large number of secondary pores, and has positive effect on the physical properties.The environment of Pinghu Formation in Baochu Slope includes the distributary channel and sand dam of delta.The typical of "mud-encased sand" mode is beneficial to form the secondary pore growth zones with multiple stages. Huagang Formation has a different environment with braided channel and braided distributary channel in the central anticline belt. The sand bodies are extensively distributed. The typical of "cycle" mode is beneficial to the dissolution of thick sand bodies in the direction where the sandstone in the central anticline beltis connected with the mudstone in Santan Depression. And it has favorable conditions for the formation of large oil and gas reservoirs.

引文

[1]妥进才.深层油气研究现状及进展[J].地球科学进展, 2002,17(4):555-571.
    [2]武法东,周平.东海陆架盆地西湖凹陷第三系层序地层与沉积体系分析[M].北京:地质出版社, 2000:111-120.
    [3]郭殿军,王宝辉.低孔低渗储层次生孔隙形成机理及分布预测[J].中外能源, 2010, 15(5):57-59.
    [4]张武,徐发,徐国盛,等.西湖凹陷某构造花港组致密砂岩储层成岩作用与孔隙演化[J].成都理工大学学报(自然科学版),2012, 39(2):122-129.
    [5]刘林玉,陈刚,柳益群,等.碎屑岩储集层溶蚀型次生孔隙发育的影响因素分析[J].沉积学报, 1998, 16(2):97-101.
    [6]朱筱敏.沉积岩石学[M]. 4版.北京:石油工业出版社,2008:53-79.
    [7]徐国盛,徐芳艮,袁海锋,等.西湖凹陷中央反转构造带花港组致密砂岩储层成岩环境演变与孔隙演化[J].成都理工大学学报(自然科学版), 2016, 43(4):385-395.
    [8]刘金水,曹冰,徐志星,等.西湖凹陷某构造花港组沉积相及致密砂岩储层特征[J].成都理工大学学报(自然科学版),2012, 39(2):130-136.
    [9]蔡全升,胡明毅,胡忠贵,等.东海盆地西湖凹陷中央隆起带古近系花港组储层特征及成岩孔隙演化[J].天然气地球科学,2013, 24(4):733-740.
    [10]王乐闻,刘舒,杨彩虹,等.西湖凹陷Y构造带花港组储层特征及物性影响因素分析[J].海洋石油, 2016, 36(4):27-32,100.