致密砂岩气藏开发后期加密调整方案研究
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摘要
苏14区块位于苏里格气田中区的中南部,区域构造属鄂尔多斯盆地陕北斜坡,目的层位处于二叠系盒8段及山1段,目前开发面临的问题是井网对储量控制程度不够,采收率偏低,亟需制定加密方案达成产建规模。需深入解剖有效砂体结构,确定剩余储量分布,分析井间连通性,建立区块三维精细气藏模型,形成致密砂岩气藏剩余储量评价技术;给出合理的砂体分类及对应合理井网井距,为后续加密井网研究奠定坚实基础,对该气藏的持续高效开发有重要意义。
Su 14 block is located in the middle and south of the central region of sulige gas field, and the area is constructed in the northern shaanxi slope of the ordos basin, with target layer in the He 8 section and Shan 1 section of Permian. At present, the problem of development is that the well network is not enough to control reserves and the recovery is low. Therefore, it is urgent to develop an encryption scheme to reach the scale of production and construction. It is necessary to dissect the effective sand structure, determine the remaining reserves distribution, analyze the connectivity between wells, and establish a 3 D fine gas reservoir model to form the remaining reserves evaluation technique of tight sandstone gas reservoirs. Reasonable sand classification and corresponding reasonable well spacing are given, which lays a solid foundation for subsequent infill well pattern research, and is of great significance to the continuous and efficient development of the gas reservoir.
Su 14 block is located in the middle and south of the central region of sulige gas field, and the area is constructed in the northern shaanxi slope of the ordos basin, with target layer in the He 8 section and Shan 1 section of Permian. At present, the problem of development is that the well network is not enough to control reserves and the recovery is low. Therefore, it is urgent to develop an encryption scheme to reach the scale of production and construction. It is necessary to dissect the effective sand structure, determine the remaining reserves distribution, analyze the connectivity between wells, and establish a 3 D fine gas reservoir model to form the remaining reserves evaluation technique of tight sandstone gas reservoirs. Reasonable sand classification and corresponding reasonable well spacing are given, which lays a solid foundation for subsequent infill well pattern research, and is of great significance to the continuous and efficient development of the gas reservoir.
引文
[1]白振华,詹燕涛,王赢,曾丽媛.苏里格气田苏14井区盒8段河流相砂体展布与演化规律研究[J].岩性油气藏,2013,01:56-62.
[2]周标.苏里格苏14三维区盒8段和山1段储层精细描述[D].西安石油大学,2014.
[3]罗治形,李传亮.老油田经济合理井网密度确定方法探讨[J].断块油气田,2005,06:44-46+91-92.
[4]许进进,李治平.用储量丰度计算法确定气田合理井网密度[J].新疆石油地质,2008,03:397-398.
[5]钟萍萍,彭彩珍.油藏井网密度计算方法综述[J].石油地质与工程,2009,02:60-63.
[6]李建奇,杨志伦,杨显贵,赵传峰.苏6加密井区井网井距优化数值模拟研究[J].石油天然气学报,2010,06:119-121+530.
[2]周标.苏里格苏14三维区盒8段和山1段储层精细描述[D].西安石油大学,2014.
[3]罗治形,李传亮.老油田经济合理井网密度确定方法探讨[J].断块油气田,2005,06:44-46+91-92.
[4]许进进,李治平.用储量丰度计算法确定气田合理井网密度[J].新疆石油地质,2008,03:397-398.
[5]钟萍萍,彭彩珍.油藏井网密度计算方法综述[J].石油地质与工程,2009,02:60-63.
[6]李建奇,杨志伦,杨显贵,赵传峰.苏6加密井区井网井距优化数值模拟研究[J].石油天然气学报,2010,06:119-121+530.