岩溶风化壳型含水气藏气水分布特征及开发技术对策——以鄂尔多斯盆地高桥区下古气藏为例

发布时间：2018-02-02 12:11

本文关键词： 风化壳含水气藏气藏特征气水控制因素储渗体划分开发技术对策　出处：《天然气地球科学》2017年05期 　论文类型：期刊论文

【摘要】：岩溶风化壳型气藏是一种重要的碳酸盐岩气藏类型,在我国广泛分布于鄂尔多斯盆地、塔里木盆地和四川盆地。受地层水影响,岩溶风化壳型含水气藏的开发面临极大的难题。该类气藏主要表现为储层大面积展布、多层含气,储层薄、丰度低、非均质性强,气井动态特征差异较大,生产井受地层水影响严重等特征。气水分布主要受区域构造背景、气源的充足程度、小幅度构造、储层的非均质性、沟槽的分布及构造反转的地质过程等因素影响。高桥地区完钻水平井动静态特征分析表明,地层水影响是造成水平井生产效果较差的主要因素。针对动态和静态方法在研究地层水分布特征的过程中存在的各自的缺点和不足,结合各自的优点,首次采用动静态结合的方法进行储渗体类型划分,将储层划分为高渗无水、高渗凝析水、高渗封存水、低渗封存水、低渗凝析水和低渗无水6种储渗体,同时在平面上明确各类储渗体分布特征。在气水分布控制因素及储渗体分布特征基础上,制定了岩溶风化壳型含水气藏开发技术对策,为该类气藏科学高效开发提供技术支撑。
[Abstract]:Karst weathered crust gas reservoir is an important type of carbonate gas reservoir, which is widely distributed in Ordos Basin, Tarim Basin and Sichuan Basin. The development of karst weathering crust type water-bearing gas reservoir is faced with great difficulties. This kind of gas reservoir is mainly characterized by large area distribution of reservoir, multi-layer gas bearing, thin reservoir, low abundance, strong heterogeneity and great difference of gas well dynamic characteristics. The distribution of gas and water is mainly affected by the regional tectonic background, the adequacy of gas source, the small amplitude structure, and the heterogeneity of reservoir. The distribution of grooves and the geological process of tectonic inversion are influenced by the analysis of dynamic and static characteristics of horizontal wells in Gaoqiao area. The influence of formation water is the main factor causing the poor production effect of horizontal wells. In view of the shortcomings and shortcomings of dynamic and static methods in the study of formation water distribution characteristics, combined with their respective advantages. For the first time, the method of combining dynamic and static state is used to divide the reservoir into six types: high permeability and no water, high permeability condensate water, high permeability storage water, low permeability water storage, low permeability condensate water and low permeability and no water. On the basis of controlling factors of gas-water distribution and characteristics of reservoir and permeability distribution, the technical countermeasures for the development of karst weathered crust type water-bearing gas reservoirs are made. It provides technical support for the scientific and efficient development of this kind of gas reservoir.
【作者单位】：中国石油勘探开发研究院;中国石油长庆油田公司第六采气厂;
【基金】：“十三五”国家重大科技专项“复杂天然气藏开发关键技术”(编号:2016ZX05015)资助
【分类号】：P618.13;TE37
【正文快照】： 2.中国石油长庆油田公司第六采气厂,陕西西安710018)28(5):801-811.[闫海军,贾爱林,冀光,等.岩溶风化壳型含水气藏气水分布特征及开发技术对策——以鄂尔多斯盆地高桥区下古气藏为例[J].天然气地球科学,2017,28(5):801-811.]0引言“喀斯特(Karst)”一词源于100多年前南斯拉夫

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