塔北地区奥陶系碳酸盐岩颗粒滩沉积特征及分布规律

doi:10.3969/j.issn.1673-8926.2018.01.005

岩性油气藏 ›› 2018, Vol. 30 ›› Issue (1): 46–54.doi: 10.3969/j.issn.1673-8926.2018.01.005

塔北地区奥陶系碳酸盐岩颗粒滩沉积特征及分布规律

宋倩¹, 马青¹, 刘莹², 滕怡葳³

1. 西南石油大学地球科学与技术学院, 成都 610500;
2. 中联煤层气国家工程研究中心有限责任公司, 北京 100095;
3. 中国石油川庆钻探工程有限公司地质勘探开发研究院, 成都 610213

收稿日期:2017-03-03 修回日期:2017-05-06 出版日期:2018-01-21 发布日期:2018-01-21
第一作者:宋倩(1990-),女,西南石油大学在读硕士研究生,研究方向为沉积学及储层地质学。地址:(610050)四川省成都市新都区新都大道8号西南石油大学地球科学与技术学院。Email:olddreammaker_s@outlook.com
通信作者: 马青(1962-),男,副教授,主要从事油气地质综合研究方面的工作。Email:656812599@qq.com。
基金资助:
国家重大科技专项“塔里木盆地海相碳酸盐岩油气资源潜力、有利勘探区带评价与目标优选研究”（编号：2011ZX5004-004）资助

Sedimentary characteristics and distribution regularities of Ordovician carbonate grainstone shoals in Tabei area,NW China

SONG Qian¹, MA Qing¹, LIU Ying², TENG Yiwei³

1. School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China;
2. National Engineering Research Center of China United Coalbed Methane Corporation Ltd., Beijing 100095, China;
3. Geological Exploration and Development Research Institute of CNPC Chuanqing Drilling Engineering Company Limited, Chengdu 610213, China

Received:2017-03-03 Revised:2017-05-06 Online:2018-01-21 Published:2018-01-21

摘要/Abstract

摘要： 为了深入研究塔北地区奥陶系碳酸盐岩颗粒滩沉积特征与分布规律。利用地震、测井、岩心和薄片等资料，分析了塔北地区奥陶系一间房组和良里塔格组的岩石学特征，颗粒滩体的沉积特征、垂向组合和分布规律等，并探讨了颗粒滩发育的主控因素与良里塔格组颗粒滩发育储层的可能性。结果表明：塔北地区一间房组为浅水宽缓台地，垂向上发育厚层颗粒滩和生物礁，颗粒滩体呈连片状分布，点礁分散于缓坡高能带，沉积微相主要为内碎屑滩、藻粒滩、生屑滩和鲕粒滩等；良里塔格组为弱镶边型台地，垂向上发育中厚层颗粒滩和生物礁丘，颗粒滩体呈片状分布于台缘洼地中，环绕古隆起呈环带状展布，沉积微相主要为内碎屑滩、藻粒滩、生屑滩、鲕粒滩和核形石滩等。颗粒滩体的发育主要受海平面相对变化、水体能量和古地貌影响，良里塔格组颗粒滩的发育规模虽不如一间房组，但其台缘带的颗粒滩仍可发育良好储层，为塔北地区潜在的油气储层段。

关键词: 非达西渗流, 致密气藏, 压裂水平井, 气水两相, 产能

Abstract: The data of seismic,logging,core and thin sections were used to analyze the petrology characteristics, sedimentary characteristics,vertical depositional combination and distribution regularities of Ordovician Yijianfang Formation and Lianglitage Formation in northern Tarim Basin,and the main controlling factors of carbonate shoals development and the possibility about effective reservoir development of Lianglitage Formation were discussed. The results show that the sedimentary microfacies of Yijianfang Formation can be divided into four types:intraclastic shoal,algaeclastic shoal,bioclastic shoal and oolitic shoal. Tabei area was shallow and width platform during the Yijianfang Formation depositional stage,thick-layer grainstone shoal and reefs were developed vertically. The platform grainstone shoals present plate-like with good lateral continuity,and the reefs scattered among high-energy zones. The sedimentary microfacies of Lianglitage Formation can be divided into five types:intraclastic shoal,algae clastic shoal,bioclastic shoal,oolitic shoal and oncolite shoal. Tabei area turned into weak rimmed platform during the Lianglitage Formation depositional stage. The water was deep and less high-enegry facies developed. Medium-thick layer grainstone shoals and reefs were developed vertically. The grainstone shoals distributed as plate-like among the depression,and around the paleo-uplift as circle-type distribution. The development of grainstone shoals was mainly affected by relative sea level change,hydrodynamic conditions and paleogeomorphology. The development scale of grainstone shoal during Lianglitage Formation depositional stage is less than that of Yijianfang Formation depositional stage,however,the grainstone shoals in platform margin still could develop into effective reservoir,which is potential oil-gas reservoir.

Key words: non-Darcy flow, tight gas reservoir, fractured horizontal wells, gas-water two phase, productivity

中图分类号:

TE122.2

宋倩, 马青, 刘莹, 滕怡葳. 塔北地区奥陶系碳酸盐岩颗粒滩沉积特征及分布规律[J]. 岩性油气藏, 2018, 30(1): 46–54.

SONG Qian, MA Qing, LIU Ying, TENG Yiwei. Sedimentary characteristics and distribution regularities of Ordovician carbonate grainstone shoals in Tabei area,NW China[J]. Lithologic Reservoirs, 2018, 30(1): 46–54.

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塔北地区奥陶系碳酸盐岩颗粒滩沉积特征及分布规律

Sedimentary characteristics and distribution regularities of Ordovician carbonate grainstone shoals in Tabei area,NW China

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