塔里木盆地巴楚地区寒武系肖尔布拉克组储层特征及成因模式

李斌; 彭军; 杨素举; 夏青松; 徐勤琪; 郝悦琪

doi:10.11781/sysydz201706797

塔里木盆地巴楚地区寒武系肖尔布拉克组储层特征及成因模式

doi: 10.11781/sysydz201706797

1.
西南石油大学地球科学与技术学院, 成都 610500
2. 西南石油大学油气藏地质及开发工程国家重点实验室, 成都 610500
3. 中国石化西北油田分公司勘探开发研究院, 乌鲁木齐 830011

基金项目: 油气藏地质及开发工程国家重点实验室基金（PLN201616）和"构造与油气资源"教育部重点实验室基金（TPR-2013-16）资助。

详细信息

作者简介:
李斌(1977-),男,博士,副教授,从事油气成藏的教学和科研工作。E-mail:lbin@swpu.edu.cn。

中图分类号: TE122.2
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出版历程
- 收稿日期: 2017-07-07
- 修回日期: 2017-09-10
- 刊出日期: 2017-11-28

Genetic model and characteristics of the Cambrian Shorebulake reservoir in Bachu area, Tarim Basin

1.
School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu, Sichuan 610500, China
3. Research Institute of Petroleum Exploration and Production, SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China

摘要

摘要: 针对塔里木盆地巴楚地区肖尔布拉克组储层研究较为薄弱的问题，通过多口井岩心观察、薄片鉴定和地化分析，认为该区肖尔布拉克组主要发育晶粒白云岩和泥微晶白云岩，储层物性受岩石结构控制明显，其中细晶白云岩及粉晶白云岩孔渗性能最好。肖尔布拉克组储层储集空间以晶间孔、溶蚀孔洞和裂缝为主，整体上属于低排驱压力细-中孔喉道型，储集性能较好。储层经历多种白云石化作用改造，以埋藏白云石化作用为主，受一定热液作用影响。储层受喜马拉雅期构造作用影响较大，破裂形成的裂缝沟通残余孔隙，多期酸性流体渗入叠加改造，一定程度上增加了储集空间，形成现今优质储层。综合认为巴楚隆起肖尔布拉克组储层在多期构造断裂叠加区域储集能力最好。
- 成因模式 /
- 白云石化 /
- 储层特征 /
- 肖尔布拉克组 /
- 巴楚地区 /
- 塔里木盆地
Abstract: Knowledge of the Cambrian Shorebulake reservoirs in the Bachu area of Tarim Basin is limited at present. Core and microscopic observations as well as geochemical analyses showed that grain dolomites and microcrystalline dolomites are common in the Shorebulake Formation. Reservoir physical properties were obviously influenced by rock structure, and the porosity and permeability of fine-grained and powdery dolomites are the best. The reservoir space in the Shorebulake Formation was mainly composed of intergranular pores, dissolution holes and fractures, with low discharge pressure and fine to medium pore-throats, showing a good reservoir capacity. The diagenetic transformation of the reservoir was dominated by buried dolomitization, and partially affected by hydrothermal activity. The Himalayan movement added fractures to the study area, which enhanced communication of residual pores and helped acid fluid transform reservoirs, increasing reservoir volume to a certain extent and resulting in the present favorable reservoirs. The superimposed area of multi-phase tectonic fractures is considered as a favorable place for the Shorebulake reservoir in the Bachu uplift.
- genetic model /
- dolomitization /
- reservoir feature /
- Shorebulake Formation /
- Bachu area /
- Tarim Basin

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