鄂尔多斯盆地北部上古生界陆相含煤碎屑岩系隐蔽气层的识别研究
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摘要
地震数据体结构特征油气预测方法是通过提取地震道的振幅数值,研究其数据排列、组合结构特征与含油气性的关系,以达到定量或半定量预测油气层的目的。针对鄂尔多斯盆地北部上古生界陆相含煤碎屑岩系隐蔽气藏(大牛地气田)成藏控制因素不清,背斜构造和含气特征不明显,无断层作用等特点,利用地震数据体结构特征油气预测法对该区上古生界陆相含煤碎屑岩系的盒2段和盒3段砂岩气层进行了油气预测。结果表明,大牛地气田盒2段和盒3段砂岩气层具有明显的地震数据体结构异常响应特征,并在此基础上,划分了8个有利含气区块,部署了一系列开发井,钻井成功率达85%,取得了显著的经济效益。
Hydrocarbon prediction by applying the structural characteristics of seismic data was a new reservoir prediction technique.The data arrangement and the correlation between their assemblage structural characters and oil-bearing property were studied for the purpose of quantitative and half-quantitative prediction of reservoirs.In allusion to characters of unclear control factors of reservoir formation of hidden reservoirs of upper Paleozoic terrestrial coal clastic rocks(Daniudi Gas Field),the anticlinal structure and oil-bearing property being not obvious without fault action,seismic data were used to predict the structural characteristics Ph2 and Ph3 sandstone gas reservoirs of the upper Palaeozoic terrestrial coal clastic rock.The result indicates that there are obvious abnormal seismic data structural characteristics in Ph2 and Ph3 sandstone gas reservoirs,and on the basis stated,8 favorable gas-bearing zones are divided,a series of development wells are arranged,drilling success rate is up to 85%,obvious economic benefit is obtained.
Hydrocarbon prediction by applying the structural characteristics of seismic data was a new reservoir prediction technique.The data arrangement and the correlation between their assemblage structural characters and oil-bearing property were studied for the purpose of quantitative and half-quantitative prediction of reservoirs.In allusion to characters of unclear control factors of reservoir formation of hidden reservoirs of upper Paleozoic terrestrial coal clastic rocks(Daniudi Gas Field),the anticlinal structure and oil-bearing property being not obvious without fault action,seismic data were used to predict the structural characteristics Ph2 and Ph3 sandstone gas reservoirs of the upper Palaeozoic terrestrial coal clastic rock.The result indicates that there are obvious abnormal seismic data structural characteristics in Ph2 and Ph3 sandstone gas reservoirs,and on the basis stated,8 favorable gas-bearing zones are divided,a series of development wells are arranged,drilling success rate is up to 85%,obvious economic benefit is obtained.
引文
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[3]Lin Changrong,Wang Shangxu,Zhang Yong.Predicting the distribution of reservoirs by applying the method of seismic data structurecharacteristics:Example from the eighth zone in Tahe Oilfield[J].Applied Geophysics,2006,3(4):234～242.
[4]林昌荣,王尚旭,张勇.应用地震数据体结构特征法预测油层分布规律[J].中国石油大学学报(自然科学版),2008,32(2):68～72.
[5]林昌荣.地震数据结构特征与油气预测[J].中国海上油气,2000,14(6):417～421.
[6]林昌荣.应用灰色系统理论预测石油产能的初探[J].中国海上油气,1989,3(4):17～22.
[7]Stockwell J W,Cohen J K.地震数据处理系统——SU3.3处理操作系统指南[M].张绍红,林昌荣译.北京:石油工业出版社,2007.
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[13]邓聚龙.灰色控制系统[M].武汉:华中理工大学出版社,1985.
[14]刘思峰,徐忠祥.灰色系统研究新进展[M].武汉:华中理工大学出版社,1996.
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