迪那2气田储层连通性及动用性评价
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摘要
迪那2气田具有压力系数高、非均质性强、物性差、局部裂缝发育等特点。该气田截止2012年底,产能建设及井网部署已基本完成,需要对整个气藏的连通性及储量动用程度进一步深化认识,并以此为依据优化新井部署,指导迪那2气田科学、合理、高效地开发。利用钻井、地震、测井、测试等资料,通过采用地层对比、断裂刻画、隔夹层评价等地质手段定性的分析了气藏平面及纵向的连通情况,采用压力动态分析、MDT测试结果对地质认识加以验证,最终得到了迪那2气田平面及纵向均连通性好且可动用程度高这一新认识,为迪那2气田的开发决策提供了科学依据,也为该类油气藏连通性评价及储量动用提供可靠的技术方法及思路。
In Dina 2 gasfield, most gas reservoirs are characterized by high pressure coefficient, strong heterogeneity, poor petrophysical property, and partly developed factures. By the end of 2012, both productivity construction and well-pattern arrangement were basically completed for this field. However, it needs to deepen our understanding of the connectivity and available reserves for the whole reservoir so as to optimize new well arrangement and guarantee its scientific and reasonable development. Based on some drilling, seismic, well-logging, and testing data, the reservoir connectivity in horizon and in vertical is qualitatively analyzed by means of some methods including stratigraphic correlation, fracture depiction, and interbed evaluation. Validated by pressure-transient analysis and MDT testing, a new geological understanding that Dina 2 has good connectivity both in horizon and in vertical has been obtained. It provides not only scientific basis for field development but also a reliable technology for evaluating connectivity and available reserves of other similar reservoirs.
In Dina 2 gasfield, most gas reservoirs are characterized by high pressure coefficient, strong heterogeneity, poor petrophysical property, and partly developed factures. By the end of 2012, both productivity construction and well-pattern arrangement were basically completed for this field. However, it needs to deepen our understanding of the connectivity and available reserves for the whole reservoir so as to optimize new well arrangement and guarantee its scientific and reasonable development. Based on some drilling, seismic, well-logging, and testing data, the reservoir connectivity in horizon and in vertical is qualitatively analyzed by means of some methods including stratigraphic correlation, fracture depiction, and interbed evaluation. Validated by pressure-transient analysis and MDT testing, a new geological understanding that Dina 2 has good connectivity both in horizon and in vertical has been obtained. It provides not only scientific basis for field development but also a reliable technology for evaluating connectivity and available reserves of other similar reservoirs.
引文
1 朱玉双,孙卫,马广明,等.陵二西区三间房组油藏储层动用状况分析[J].西北大学学报,2008,38(1):104-106.
2 候加根.文南油田文79断块区沙二下亚段沉积微相与开发效果分析[J].石油勘探与开发,2000,27(6):65-67.
3 穆龙新.裂缝储层地质模型的建立[J].石油勘探与开发,1995,22(6):78-82.
4 林承焰,侯连华,董春梅.应用统计学方法识别隔夹层-以辽河西部凹陷沙3段为例[J].石油实验地质,1997,19(3):245-250.
5 雍自权,杨锁,钟韬,等.大涝坝地区巴什基奇克组隔夹层特征及分布规律[J].成都理工大学学报,2010,37(1):50-54.
6 朱东亚,胡文,曹学伟,等.临南油田隔夹层类型划分及其分布规律研究[J].地球科学:中国地质大学学报,2004,29(2):211-218.
7 王改云,杨少春,廖飞燕,等.辫状河储层中隔夹层的层次结构分析[J].天然气地球科学,2009,20(3):378-382.
2 候加根.文南油田文79断块区沙二下亚段沉积微相与开发效果分析[J].石油勘探与开发,2000,27(6):65-67.
3 穆龙新.裂缝储层地质模型的建立[J].石油勘探与开发,1995,22(6):78-82.
4 林承焰,侯连华,董春梅.应用统计学方法识别隔夹层-以辽河西部凹陷沙3段为例[J].石油实验地质,1997,19(3):245-250.
5 雍自权,杨锁,钟韬,等.大涝坝地区巴什基奇克组隔夹层特征及分布规律[J].成都理工大学学报,2010,37(1):50-54.
6 朱东亚,胡文,曹学伟,等.临南油田隔夹层类型划分及其分布规律研究[J].地球科学:中国地质大学学报,2004,29(2):211-218.
7 王改云,杨少春,廖飞燕,等.辫状河储层中隔夹层的层次结构分析[J].天然气地球科学,2009,20(3):378-382.
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