准噶尔盆地玛北地区三叠系百口泉组岩石物理相

doi:10.12108/yxyqc.20210110

岩性油气藏 ›› 2021, Vol. 33 ›› Issue (1): 99–108.doi: 10.12108/yxyqc.20210110

准噶尔盆地玛北地区三叠系百口泉组岩石物理相

杨凡凡^1,2, 姚宗全^1,2, 杨帆³, 德勒恰提·加娜塔依^1,2, 张磊⁴, 曹天儒^1,2

1. 新疆大学地质与矿业工程学院, 乌鲁木齐 830046;
2. 新疆大学中亚地质矿产信息集成自治区重点实验室, 乌鲁木齐 830046;
3. 中国石油勘探开发研究院, 北京 100083;
4. 中国石油新疆油田分公司勘探开发研究院, 新疆克拉玛依 834000

收稿日期:2020-08-24 修回日期:2020-10-26 出版日期:2021-02-01 发布日期:2021-01-25
通讯作者: 姚宗全(1989-),男,博士,副教授,主要从事石油地质、沉积储层、油气储层表征与建模方面的教学与研究工作。Email:407465819@qq.com。 E-mail:407465819@qq.com
作者简介:杨凡凡(1993-),男,新疆大学在读硕士研究生,研究方向为沉积储层学。地址:(830046)新疆乌鲁木齐市天山区延安路1230号新疆大学南校区。Email:1501810992@qq.com
基金资助:
国家自然科学基金青年项目“辫-曲体系的探地雷达相及其定量三维沉积构型研究”（编号：41902109）、国家科技重大专项“准噶尔盆地岩性地层油气藏分布规律与目标评价”（编号：2017ZX05001004）、新疆大学博士启动基金“红山嘴地区中下侏罗统含煤层系层序格架下的沉积体系演化及储层表征”（编号：62031224725）、新疆维吾尔自治区天池博士计划“红山嘴地区中下侏罗统含煤层系层序格架下的沉积体系演化及储层表征”（编号：62008028）和新疆维吾尔自治区研究生科研创新项目“准噶尔盆地三台油田侏罗系头屯河组沉积环境研究”（编号：XJ2020G042）联合资助

Petrophysical facies of Triassic Baikouquan Formation in northern Mahu Sag,Junggar Basin

YANG Fanfan^1,2, YAO Zongquan^1,2, YANG Fan³, DELECHIATI Ganatayi^1,2, ZHANG Lei⁴, CAO Tianru^1,2

1. School of Geology and Mining Engineering, Xinjiang University, Urumqi 830046, China;
2. Key Laboratory of Central Asia Geology and Mineral Information Integration Autonomous Region, Xinjiang University, Urumqi 830046, China;
3. PetroChina Research Institute Petroleum Exploration and Development, Beijing 100083, China;
4. Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China

Received:2020-08-24 Revised:2020-10-26 Online:2021-02-01 Published:2021-01-25

摘要/Abstract

摘要： 准噶尔盆地玛北地区三叠系百口泉组储层非均质性较强，多因素综合分析成为近年来精细储层研究的重要手段。通过岩心、铸体薄片、测井曲线、粒度等资料，开展综合储层沉积微相、成岩相和裂缝相特征的岩石物理相研究，并对所划分的岩石物理相进行聚类分析，开展对研究区有利储层的预测。结果表明：①扇三角洲沉积微相主要发育分流河道、辫状分支水道、水下分流河道及水下分流间湾等4种微相；②成岩相包括3种致密化成岩相（压实致密成岩相、伊/蒙充填成岩相和硅质胶结成岩相）和2种扩容性成岩相（绿泥石衬边弱溶蚀成岩相和不稳定组分溶蚀成岩相）；③在平缓斜坡背景下，由于局部发育水平缝，裂缝密度小于1条/m，对储层物性影响较小；④遵循“沉积微相+成岩相+裂缝相”叠合原则，厘定了岩石物理相的分类，划分出了水下分流河道-绿泥石衬边弱溶蚀成岩相等10种岩石物理相；⑤PF1对应Ⅰ类储层，物性最好，主要发育在百二段，百三段发育规模较小；PF2对应Ⅱ类储层，物性中等，在百口泉组储层中相对较发育；PF3对应Ⅲ类储层，物性相对较差，在百三段较为发育。玛北地区岩石物理相的研究方法，可以为百口泉组油气扩边勘探提供指导。

关键词: 岩石物理相, 沉积微相, 成岩相, 百口泉组, 三叠系, 玛湖坳馅, 准噶尔盆地

Abstract: The reservoir heterogeneity of Triassic Baikouquan Formation in northern Mahu Sag of Junggar Basin is strong,and multi factor comprehensive analysis has become an important means of fine reservoir research in recent years. Through core description,casting thin section,logging curve and grain size analysis,the studies on petrophysical facies including reservoir sedimentary microfacies,diagenetic facies and fracture facies were carried out,and cluster analysis on the divided petrophysical facies was carry out to predict favorable reservoirs in the study area. The results show that:(1)Fan delta sedimentary microfacies are mainly composed of distributary channel, braided branch channel,underwater distributary channel and underwater distributary bay.(2)Diagenetic facies include three kinds of tight diagenetic facies(compacted tight diagenetic facies,illite/smectite filling diagenetic facies and siliceous cementation diagenetic facies)and two kinds of dilatancy diagenetic facies(chlorite lining weak dissolution diagenetic facies and unstable component dissolution diagenetic facies).(3)Under the background of gentle slope,the fracture density is less than 1/m due to the local development of horizontal fractures, which has little impact on reservoir physical properties.(4)According to the superposition principle of "sedimentary microfacies + diagenetic facies + fracture facies",the classification of petrophysical facies was determined, and 10 kinds of petrophysical facies were divided,such as underwater distributary channel-chlorite lining weak dissolution diagenesis facies and so on.(5)PF1 corresponds to type Ⅰ reservoir,with the best reservoir physical properties,mainly developed in Bai 2 member,and the development scale of the Bai 3 member is relatively small. PF2 corresponds to type Ⅱ reservoir with medium physical properties and relatively developed in Baikouquan Formation. PF3 corresponds to type Ⅲ reservoir,with relatively poor physical properties and relatively developed in Bai 3 member. The research method of petrophysical facies in northern Mahu Sag can provide guidance for oil and gas exploration of Baikouquan Formation.

Key words: petrophysical facies, sedimentary microfacies, diagenetic facies, Triassic, Baikouquan Formation, Mahu Sag, Junggar Basin

中图分类号:

TE122.2

杨凡凡, 姚宗全, 杨帆, 德勒恰提·加娜塔依, 张磊, 曹天儒. 准噶尔盆地玛北地区三叠系百口泉组岩石物理相[J]. 岩性油气藏, 2021, 33(1): 99–108.

YANG Fanfan, YAO Zongquan, YANG Fan, DELECHIATI Ganatayi, ZHANG Lei, CAO Tianru. Petrophysical facies of Triassic Baikouquan Formation in northern Mahu Sag,Junggar Basin[J]. Lithologic Reservoirs, 2021, 33(1): 99–108.

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准噶尔盆地玛北地区三叠系百口泉组岩石物理相

Petrophysical facies of Triassic Baikouquan Formation in northern Mahu Sag,Junggar Basin

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