动静态资料相结合的气井连通性分析——以克拉美丽气田火山岩气藏为例
摘要
克拉美丽气田是近年来准噶尔盆地天然气勘探的一个重大发现。针对该气田火山岩气藏内幕结构复杂,储层非均质性强、井间产能差异大的特征,提出了动静态资料相结合的气井连通性分析方法:首先利用试井、试采及油气水性质等动态资料从开发角度对相邻井进行井间连通性分析,然后结合地质以及地震资料对火山岩体轮廓和内幕结构精细刻画的成果,进一步确定井间连通情况。以滴西18井区为例,采用上述气井连通性分析方法分析认为:DX182、DX1824是连通的,DX1804可能与DX18或者DX1805连通,其余井间的连通性较差。在研究区的应用结果表明,该分析方法对单井开发动态趋势预测与实际符合率达到80%以上,为克拉美丽气田开发方案的编制提供了可靠的基础数据。
The Kelameili Gas Field,another major discovery in natural gas exploration in the Junggar Basin,is featured by complex internal structures,heterogeneous reservoirs and great disparities in gas production capacity among different wells.In view of this,a new method is proposed to analyze the well connectivity through both dynamic and static data.First,the well connectivity of neighboring wells is discussed from the development perspective based on the well-testing and trial production data and the properties of oil,gas and water of these wells.Then the details of well connectivity are determined by referring to the fine descriptions of the profile and internal structures of volcanic rocks in this area based on geological and seismic data.In a case study from the wellblock Dixi 18,this analysis method showed that good connectivity was found between DX182 and DX1824 wells;possible connectivity existed between DX1804 and DX18 or DX1805 wells;but the inter-well connectivity among other wells were very poor.In conclusion,the prediction of the dynamic trend of a single well's development in this study area agrees well with the actual result with the accuracy ratio of more than 80%,providing basic data for formulating a proper development plan of the Kelameili Gas Field.
The Kelameili Gas Field,another major discovery in natural gas exploration in the Junggar Basin,is featured by complex internal structures,heterogeneous reservoirs and great disparities in gas production capacity among different wells.In view of this,a new method is proposed to analyze the well connectivity through both dynamic and static data.First,the well connectivity of neighboring wells is discussed from the development perspective based on the well-testing and trial production data and the properties of oil,gas and water of these wells.Then the details of well connectivity are determined by referring to the fine descriptions of the profile and internal structures of volcanic rocks in this area based on geological and seismic data.In a case study from the wellblock Dixi 18,this analysis method showed that good connectivity was found between DX182 and DX1824 wells;possible connectivity existed between DX1804 and DX18 or DX1805 wells;but the inter-well connectivity among other wells were very poor.In conclusion,the prediction of the dynamic trend of a single well's development in this study area agrees well with the actual result with the accuracy ratio of more than 80%,providing basic data for formulating a proper development plan of the Kelameili Gas Field.
引文
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[3]彭彩珍,郭平,贾闽惠,等.火山岩气藏开发现状综述[J].西南石油大学学报,2006,28(50):69-72.
[4]林向洋,苏玉平,郑建平,等.准噶尔盆地克拉美丽气田复杂火山岩储层特征及控制因素[J].地质科技情报,2011,30(6):28-37.
[5]庄惠农.气藏动态描述与试井[M].2版.北京:石油工业出版社,2009.
[6]雷群,万玉金.生产动态分析理论与实践[M].北京:石油工业出版社,2008.
[7]HUANG Xuri,GAJRAJ A,KELKAR M.The impact ofintegrating static and dynamic data in quantifying uncer-tainties in the future prediction of multi-phase systems[J].SPE Formation Evaluation,1997,12(4):263-270.
[8]徐涛,孙贺东.应用流动测试和生产数据对火山岩地层进行连续性评价[J].国外油田工程,2005,21(12):21-24.
[9]李骞,李相方.凝析气藏生产过程中气油比异常原因分析[J].天然气工业,2011,31(6):63-65.
[10]王延杰,张玉亮,刘念周,等.克拉美丽气田石炭系火成岩有利储集层预测[J].新疆石油地质,2010,31(1):7-9.
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