四川盆地广安气田须四段、须六段致密砂岩气藏气水分布对比

发布时间：2018-01-17 17:24

本文关键词：四川盆地广安气田须四段、须六段致密砂岩气藏气水分布对比　出处：《天然气地球科学》2016年02期 　论文类型：期刊论文

【摘要】：四川盆地广安气田须家河组气藏内气水关系复杂,须四段、须六段气藏各区块产能差异大,对比研究须四段、须六段的气水分布对该致密砂岩气藏的高效开发有重要指导意义。根据广安致密砂岩气田气水层解释难度大的研究现状,提出了一种适合须四段、须六段气水层的解释方法。首先,分段建立须四段、须六段不同类型储层的含水饱和度计算模型,再联合核磁共振与相渗资料求取束缚水饱和度,进一步计算可动水饱和度,结合生产动态资料划分出研究区须四段、须六段气水层的定量识别标准。在广安气田须四段、须六段气水层平面、剖面分布特征识别的基础上进行对比研究,结果显示须四段为大面积气水同层分布,而须六段发育高产"甜点"区,并深入探讨了二者气水分布差异主控因素。表明气源条件差异使得须四段、须六段储层内气藏原始充满程度不一;须四段、须六段储层的构成特征控制着流体的空间分布差异;构造幅度的差异使得须四段、须六段内气水分异呈现不同的分布格局。
[Abstract]:The relationship between gas and water in Xujiahe formation gas reservoir in Guang'an gas field in Sichuan basin is complex, and the productivity of each block of Xujiahe formation gas reservoir in Xujiahe formation is quite different. The distribution of gas and water in the sixth member of Xuzhou formation has important guiding significance for the high efficiency development of the tight sandstone gas reservoir. According to the difficult research situation of gas and water layer interpretation in Guang'an tight sandstone gas field, a new type of gas and water distribution is put forward for the fourth member of Xuzhou gas reservoir. First of all, the calculation model of water saturation of different types of reservoirs in the fourth member and the sixth member is established, and then the irreducible water saturation is obtained by combining nuclear magnetic resonance (NMR) and permeation data. Further calculation of moveable water saturation, combined with production dynamic data, the study area is divided into four and six gas and water layer quantitative identification standard. In Guangan gas field, there are four and six gas and water layer plane. On the basis of the recognition of the profile distribution characteristics, the results show that the four segments of Xuzhou are the same layer distribution of large area of air and water, while the six sections are developed into a high-yield "dessert" area. The main controlling factors of the difference of gas-water distribution between them are discussed in depth. It is shown that the difference of gas source conditions makes the original filling degree of the gas reservoir in the reservoir of the fourth member and the sixth member of Xuzhou different; The spatial distribution of fluids is controlled by the formation characteristics of the reservoir in the fourth and sixth member of Xuzhou formation. The difference of tectonic amplitude makes the different distribution pattern of gas and moisture in the four and six sections of Xuzhou.
【作者单位】：中国石油勘探开发研究院;新疆油田黑油山有限责任公司;
【基金】：国家科技重大专项项目“天然气开发关键技术”(编号:2011ZX05015)资助
【分类号】：P618.13
【正文快照】： Basin[J].Natural Gas Geoscience,2016,27(2):359-370,376.[罗超,贾爱林,何东博,等.四川盆地广安气田须四段、须六段致密砂岩气藏气水分布对比[J].天然气地球科学,2016,27(2):359-370,376.]0引言广安气田位于四川盆地川中低缓褶皱带东部,构造位置上隶属于广安断裂背斜构造带,

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