鄂尔多斯盆地G区块储层有利区预测
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摘要
鄂尔多斯盆地G区块位于伊陕斜坡南部,构造平缓,断裂不发育。下奥陶统马家沟组为海相碳酸盐岩沉积环境,前人研究表明马家沟组储层品质是影响其成藏的主要因素,古岩溶斜坡带储层品质较好,为其成藏有利区。为了展现马家沟组顶部构造特征,寻找储层有利区,根据G区二维地震资料,进行地震品质分析、测井特征分析,使用频次直方图法对测井曲线进行一致性校正,在此基础上对各井进行精细标定,并完成该区的地震解释;利用测井速度曲线,构建G区块速度场,绘制马家沟组顶部深度域构造图,并最终给出储层有利区的预测。
Block G is located in the south of Yishan slope in Erdos Basin.The structure is smooth and the fault does not develop well.Majiagou formation of Lower Ordovician is regarded as marine facies with carbonate rock.The previous study indicated that the Majiagou reservation quality is affecting its main factors.The quality of the ancient karst slope is good.In order to reveal the characteristics of the top structure in Majiagou formation and locate the favorable reservation section,based on 2-D seismic data of Block G,the seismic quality and logging characteristics are analyzed,and the logging curve is corrected consistently.On the basis of this,the seismic data interpretation in this section is completed and the velocity field in Block G is established by the use of logging velocity curve.Finally,the deep structure map of Majiagou formation has been drawn,which makes the predication of the favorable section.
Block G is located in the south of Yishan slope in Erdos Basin.The structure is smooth and the fault does not develop well.Majiagou formation of Lower Ordovician is regarded as marine facies with carbonate rock.The previous study indicated that the Majiagou reservation quality is affecting its main factors.The quality of the ancient karst slope is good.In order to reveal the characteristics of the top structure in Majiagou formation and locate the favorable reservation section,based on 2-D seismic data of Block G,the seismic quality and logging characteristics are analyzed,and the logging curve is corrected consistently.On the basis of this,the seismic data interpretation in this section is completed and the velocity field in Block G is established by the use of logging velocity curve.Finally,the deep structure map of Majiagou formation has been drawn,which makes the predication of the favorable section.
引文
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[11]邹德江,于兴河,王晓畅,等.油藏研究中测井曲线标准化优化方法探讨[J].石油地质与工程,2007,21(4):55~57.
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[2]夏明军,戴金星,邹才能,等.鄂尔多斯盆地南部加里东期岩溶古地貌与天然气成藏条件分析[J].石油勘探与开发,2007,34(3):291~315.
[3]阎荣辉,白海峰,刘宝宪,等.鄂尔多斯盆地南缘下奥统统马家沟组马六段成藏条件分析[J].天然气地球科学,2009,20(5):738~743.
[4]杨承运,吴朝东.鄂尔多斯盆地奥陶系马家沟组碳酸盐岩沉积-成岩微相研究[J].地学前缘,1998,5(4):266.
[5]李贤庆.鄂尔多斯盆地中部气田地层流体特征与天然气成藏[M].北京:地质出版社,2005.120~122.
[6]雷宇,王凤琴,刘红军,等.鄂尔多斯盆地中生界页岩气成藏地质条件[J].天然气与石油,2011,29(16):49~54.
[7]肖亮,初玉林,张宏生,等.测井资料识别气层方法研究[J].工程地球物理学报,2006,3(6):470~472.
[8]Doveton JH,Bomemann E.Log normalization bytrend surface analysis[J].The Log Analyst,1981,22(4):3~8.
[9]滑爱军.鄂尔多斯大牛地气田测井资料标准化方法研究[J].河南石油,2006,20(2):31~33.
[10]陈东,夏宏泉,范翔宇,等.基于趋势面分析法的测井资料标准化研究[J].测井与射孔,2007,10(2):43~45.
[11]邹德江,于兴河,王晓畅,等.油藏研究中测井曲线标准化优化方法探讨[J].石油地质与工程,2007,21(4):55~57.
[12]雍世和,洪有密.测井资料综合解释与数字处理[M].北京:石油工业出版社,1982.
[13]陆基孟.地震勘探原理[M].北京:石油工业出版社,1993.
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