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石油实验地质  2017, Vol. 39 Issue (5): 610-617    DOI: 10.11781/sysydz201705610
盆地·油藏 本期目录 | 过刊浏览 |
四川盆地寒武系洗象池组储层基本特征及主控因素研究
林怡1, 陈聪1,2, 山述娇1, 曾乙洋1, 刘鑫1, 陈友莲1
1. 中国石油 西南油气田公司 勘探开发研究院, 成都 610041;
2. 油气藏地质及开发工程国家重点实验室(成都理工大学), 成都 610072
Reservoir characteristics and main controlling factors of the Cambrian Xixiangchi Formation in the Sichuan Basin
Lin Yi1, Chen Cong1,2, Shan Shujiao1, Zeng Yiyang1, Liu Xin1, Chen Youlian1
1. Research Institute of Exploration and Development, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610041, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China
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摘要: 四川盆地寒武系天然气资源量大,上寒武统洗象池组作为一个极具潜力的含气层系,目前勘探程度整体较低,其储层特征及主控因素尚不明确,有待深入研究。利用岩心、薄片及分析化验资料对洗象池组储层岩石类型、储集空间、物性及发育控制因素进行综合研究,认为洗象池组储集岩主要为颗粒白云岩,其次为细(粉)晶白云岩;储集空间包括孔隙、溶洞和裂缝,储层类型为裂缝—孔隙(洞)型;物性总体表现为“低孔低渗”的特征,局部含高孔渗层段,储层非均质性较强。从分布特征上来看,洗象池组储层纵向叠置,横向连续性较差,川中地区往东到GT2井开始出现厚层储层,再向川东五百梯地区储层有所减薄。盆地边缘的习水、奉节一带储层成带分布,厚度较川中地区薄。储层发育受沉积相控制作用明显,颗粒滩发育区内储层发育程度较高,此外,建设性成岩作用及构造破裂作用也对储层发育有积极影响。
关键词 储层特征颗粒白云岩储层主控因素洗象池组四川盆地    
Abstract:The middle and lower Cambrian Xixiangchi Formation in the Sichuan Basin is a gas-bearing formation with a good potential. Its exploration degree is still very low at present, and the reservoir characteristics and main controls are not clear. Core, thin section and testing data were integrated to study the rock types, reservoir space, physical properties and controlling factors of the Xixiangchi reservoirs. The Xixiangchi reservoirs are mainly grain dolomites, followed by aplite-dolomites. The reservoir space includes pores, caves and fractures, and the reservoir type is fracture-pore type. The physical properties of the reservoirs are characterized by low porosity and low permeability, and locally high porosity and high permeability, showing a strong heterogeneity. For the distribution, the Xixiangchi reservoirs vertically stacked and have a poor lateral continuity. Thick reservoirs appear from the central Sichuan Basin to well GT 2 in the east, and then thinned in Wubaiti area. In Fengjie and Xishui areas at the basin edge, reservoirs distribute as belts, and are thinner compared to those in the basin center. Reservoir development was controlled by sedimentary facies obviously. In the grain shoal area, reservoirs have a high development degree. Besides, constructive diagenesis and tectonic fracture have positive effects on reservoir development.
Key wordsreservoir characteristics    grain dolomite    reservoir main controls    Xixiangchi Formation    Sichuan Basin
收稿日期: 2017-03-07     
ZTFLH:  TE122.2  
基金资助:国家科技重大专项“大型油气田及煤层气开发”(2011ZX05004-005)资助。
作者简介: 林怡(1987—),女,硕士,工程师,油气地质与勘探专业.E-mail:linyi02cc@163.com.
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引用本文:

林怡, 陈聪, 山述娇, 曾乙洋, 刘鑫, 陈友莲. 四川盆地寒武系洗象池组储层基本特征及主控因素研究[J]. 石油实验地质, 2017, 39(5): 610-617.
Lin Yi, Chen Cong, Shan Shujiao, Zeng Yiyang, Liu Xin, Chen Youlian. Reservoir characteristics and main controlling factors of the Cambrian Xixiangchi Formation in the Sichuan Basin. PETROLEUM GEOLOGY & EXPERIMENT, 2017, 39(5): 610-617.

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http://www.sysydz.net/CN/10.11781/sysydz201705610      或      http://www.sysydz.net/CN/Y2017/V39/I5/610

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