[1]杨红霞,陈雪昆,田雨桐,等.玛湖凹陷斜坡区下乌尔禾组沸石类矿物形成机理[J].新疆石油地质,2019,(06):658.[doi:10.7657/XJPG20190604]
　YANG Hongxia,CHEN Xuekun,TIAN Yutong,et al.Forming Mechanism of Zeolites in Lower Wuerhe Formation in Slope Area of Mahu Sag[J].Xinjiang Petroleum Geology,2019,(06):658.[doi:10.7657/XJPG20190604]
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玛湖凹陷斜坡区下乌尔禾组沸石类矿物形成机理()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2019年06期
页码:
658
栏目:
出版日期:
2019-12-01

文章信息/Info

Title:
Forming Mechanism of Zeolites in Lower Wuerhe Formation in Slope Area of Mahu Sag
文章编号:
1001-3873（2019）06-0658-08
作者:
杨红霞 1; 陈雪昆2; 田雨桐3; 王剑1; 李璐璐1; 雷海艳1
(1.中国石油 新疆油田分公司 实验检测研究院,新疆 克拉玛依 834000;2. 中国石油 新疆油田分公司 采油一厂,新疆 克拉玛依 834000;3.中国地质大学(北京) 能源学院，北京 100083)
Author(s):
YANG Hongxia1;  CHEN Xuekun2;  TIAN Yutong3; WANG Jian1;  LI Lulu1;  LEI Haiyan1
(1.Research Institute of Experiment and Detection, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China; 2.No.1 Oil Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China; 3.School of Energy Resources, China University of Geosciences, Beijing 100083, China)
关键词:
玛湖凹陷; 斜坡区; 下乌尔禾组; 砂砾岩储集层; 沸石类矿物; 成因模式; 形成机理
Keywords:
Mahu sag;  slope area;  lower Wuerhe formation;  sandy conglomerate reservoir;  zeolite mineral;  genesis model;  forming mechanism
分类号:
TE112.23
DOI:
10.7657/XJPG20190604
文献标志码:
A
摘要:
准噶尔盆地玛湖凹陷斜坡区下乌尔禾组储集层中发现大量的沸石胶结物，为明确沸石类矿物对储集层质量和含油性的影响，利用岩石薄片、铸体薄片、扫描电镜、能谱、电子探针、阴极发光、全岩衍射和包裹体等实验方法，研究了沸石类矿物的特征、种类和分布规律，明确了储集层中沸石类矿物的形成机理，揭示了沸石发育与储集层含油性的关系。研究表明，玛湖凹陷斜坡区下乌尔禾组储集层中发育5种沸石类矿物，以浊沸石为主，见少量的片沸石，微量的方沸石、斜发沸石和辉沸石，常见片沸石与浊沸石共生，少量的斜发沸石与片沸石共生。沸石的分布受沉积相带的控制，浊沸石主要分布于孔渗较好的扇三角洲前缘，片沸石分布于扇三角洲平原前端。沸石类矿物成因有2类3种，即交代成因模式（斜长石的钠长石化和火山物质蚀变）和胶结成因模式，以胶结成因模式为主。成岩早期沸石的析出增强了储集层的抗压实能力，储集层得以保留了部分原生孔隙，为中成岩阶段酸性流体的注入和溶蚀作用提供了流动通道；成藏期沸石溶蚀有利于形成优质储集层。
Abstract:
A large number of zeolite cements have been found in the reservoirs of the lower Wuerhe formation in the slope area of Mahu sag, Junggar basin. In order to clarify the influences of zeolite minerals on reservoir quality and oil-bearing property, the experimental methods such as rock thin section, casting thin section, SEM, energy spectrum, electron probe, cathodoluminescence, whole-rock diffraction and inclusions have been used to research the characteristics, types and distribution of zeolite minerals. Furthermore, the formation mechanism of zeolite minerals in reservoirs is clarified and the relationship between the development of zeolite and oil-bearing property of reservoirs is revealed. The results show that five kinds of zeolite minerals are developed in the reservoirs of the lower Wuerhe formation in the slope area of Mahu sag. The zeolites are mainly consisted of laumontite with small amounts of heulandite and trace amounts of analcime, clinoptilolite and stilbite. The heulandite commonly coexists with laumontite and small amounts of clinoptilolite coexists with heulandite. The distribution of zeolites is controlled by sedimentary facies, the laumontite is mainly developed in the fan delta front with relatively good porosity and permeability and the heulandite is developed in the front of fan delta plain. The genesis of zeolite minerals can be divided into three types of two categories, namely metasomatic genesis model caused by plagioclase albitization and volcanic material alteration and cementation genesis model which is the dominant. The precipitation of zeolite in the early stage of diagenesis enhanced the ability of reservoir to resist normal compaction so that partial primary pores could be preserved, which provided flow channels for acid fluid and dissolution in the middle stage of diagenesis. The dissolution of zeolite during hydrocarbon accumulation period is beneficial to the high quality reservoir formation

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更新日期/Last Update: 2019-11-25