徐家围子地区火山岩储层物性评价方法研究
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摘要
火山岩储层物性评价是气、水层解释的基础工作之一,利用综合录井资料进行火山岩储层物性评价方法研究是一项非常有必要的工作。利用大量综合录井资料,应用统计学理论分析综合录井参数与可钻性之间的相关性,确定火山岩可钻性评价参数,明确了不同钻头类型、不同岩性条件下的钻时与工程参数、地质因素相关性。采用“相关系数加权”、“多元回归分析”提取出了反映岩石特性的特征参数的“相对工程因子”和反映储层物性的特征参数的“相对地质因子”,通过确定标准化和归一化后的各项工程参数相关系数及其贡献权,在实际钻时中扣除地质因素贡献,获得纯工程参数产生的钻时信号“相对工程因子”,来反映储层的物性,“相对工程因子”越大反映储层物性越差。采用多元回归计算“相对地质因子”,“相对地质因子”越大反映储层物性越好。据此建立了利用综合录井资料评价徐家围子火山岩储层物性评价模型及评价标准,并将其应用于火山岩储层评价,进而对徐家围子地区火山岩储层物性评价方法进行了综合研究与探讨,不仅丰富了火山岩储层物性研究理论,同时为加快松辽盆地深层天然气勘探开发步伐、实现天然气资源跨越式发展提供一定的理论支持。
Evaluation of the petrophysical properties of volcanic rock reservoirs is the foundation of Interpretation of gas-bearing or water-bearing. It is important to study on evaluation method of the petrophysical properties of volcanic rock reservoirs,using compound logging data. By using observational compound logging data,correlation analysis of compound logging parameters and drillability of rocks is analyzed by making use of statistics theory,and evaluation parameters of volcanic rock drillability is established. Correlation analysis of drillability time and engineering factors or geological factors is established in the different lithogical conditions and different drill bit types. Relative engineering factor which can reflect feature parameters of rock characteristics and relative geological factor which can reflect feature parameters of reservoir property are extracted through weighted correlation coefficient and multiple regression analysis. by means of setting correlation coefficient and its contribution of engineering factors after the standardization and normalization, contribution of geological factor can be deducted in actual drillability time, and relative engineering factor of drillability time signals which can reflect reservoir property is obtained. "Relative engineering factor”reflecting the greater, the poorer reservoir properties. Using multiple regression, "relative geological factor”is calculated. Relative geological factor“reflecting the larger, the better reservoir properties. Accordingly the use of comprehensive logging data to evaluate volcanic reservoir Xujiaweizi evaluation model and evaluation criteria is established, and it is applied to volcanic reservoir evaluation. Volcanic reservoir evaluation methods are comprehensive study and discussion in the Xujiaweizi area. Not only enrich the study of volcanic reservoir theory, while the deep basin gas to accelerate the pace of exploration and development to realize leap-forward development of natural gas resources to provide some theoretical support.
Evaluation of the petrophysical properties of volcanic rock reservoirs is the foundation of Interpretation of gas-bearing or water-bearing. It is important to study on evaluation method of the petrophysical properties of volcanic rock reservoirs,using compound logging data. By using observational compound logging data,correlation analysis of compound logging parameters and drillability of rocks is analyzed by making use of statistics theory,and evaluation parameters of volcanic rock drillability is established. Correlation analysis of drillability time and engineering factors or geological factors is established in the different lithogical conditions and different drill bit types. Relative engineering factor which can reflect feature parameters of rock characteristics and relative geological factor which can reflect feature parameters of reservoir property are extracted through weighted correlation coefficient and multiple regression analysis. by means of setting correlation coefficient and its contribution of engineering factors after the standardization and normalization, contribution of geological factor can be deducted in actual drillability time, and relative engineering factor of drillability time signals which can reflect reservoir property is obtained. "Relative engineering factor”reflecting the greater, the poorer reservoir properties. Using multiple regression, "relative geological factor”is calculated. Relative geological factor“reflecting the larger, the better reservoir properties. Accordingly the use of comprehensive logging data to evaluate volcanic reservoir Xujiaweizi evaluation model and evaluation criteria is established, and it is applied to volcanic reservoir evaluation. Volcanic reservoir evaluation methods are comprehensive study and discussion in the Xujiaweizi area. Not only enrich the study of volcanic reservoir theory, while the deep basin gas to accelerate the pace of exploration and development to realize leap-forward development of natural gas resources to provide some theoretical support.
引文
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[2] S.K.Sanyal, S.Juprasert, M.Jusbasche. An evaluation of rhyolite-basalt-volcanic ash sequence from well logs[J]. 20st SPWLA annual lagging symposium transactions, Oklahoma, 1979, 23-59.
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[5]黄隆基,范宜仁.火山岩测井评价的地质和地球物理基础[J].测井技术,1997,21(5): 341-344.
[6]朱爱丽,吴伯福,武江.火成岩的测井评价—大港油田枣北地区应用实例[J].测井技术, 1997,21(5):345-350.
[7]范宜仁,黄隆基,代诗华.交会图技术在火成岩岩性和裂缝识别中的应用[J].测井技术, 1999,23(1):53-56.
[8]陈建文,魏斌,李长山,等.火山岩岩性的测井识别[J].地学前缘,2000,7(4):458-467.
[9]黄布宙,潘保芝.松辽盆地北部深层火成岩测井响应特征及岩性划分[J],石油物探,2001, 40(3):42-47.
[10]丁秀春.测井响应在火成岩储层研究中的应用[J].特种油气藏,2003,10(1):69-72.
[11]赵建,高福红.测井资料交会图法在火山岩岩性识别中的应用[J].世界地质,2003, 22(2):136-140.
[12]杨申谷,杨光明.大洼油田火山岩岩相分析[J].江汉石油学院学报,2003,25(4):12-14.
[13]魏斌,陈建文,李长山,等.徐家围子断陷火山岩岩性的测井识别技术[J].特种油气藏,2003,10(1):73-75.
[14] Buzhou Huang,Baozhi Pan.Characteristics of Log Responses and Lithology etermination of Igneous Rock Reservoirs[J].Journal of Geophysics and Engineering,2004,1:51-55.
[15]王薇,李红娟,杨学峰.徐深气田火山岩储层岩性与流体性质测井识别研究[J].国外测井技术,2006,1(1):6-9.
[16]李舟波,王祝文.科学钻探中的元素测井技术[J].地学前缘,1998,5(1):119-130.
[17]袁祖贵,楚泽涵.一种新的测井方法(ECS)在王庄稠油油藏中的应用[J].核电子学与探测技术,2003,23(5):417-423.
[18]刘绪纲,孙建孟,郭云峰.元素俘获谱测井在储层综合评价中的应用[J].测井技术, 2005,29(3):236-239.
[19]程华国,袁祖贵.用地层元素测井(ECS)资料评价复杂地层岩性变化[J].核电子学与探测技术,2005,25(3):233-238.
[20]张剑,谯晓容,曹云安,等.火山岩储集层岩性识别的研究及应用[J].中外能源,2006, 11(4):46-51.
[21]王拥军,冉启全,童敏,等.ECS测井在火山岩岩性识别中的应用[J].国外测井技术, 2006,21(1):13-16.
[22]于景才,原福堂,邱辉丽,等.测井新技术在复杂岩性地层中的地质应用[J].石油天然气学报(江汉石油学院学报),2005,27(2):345-348.
[23]魏涛,田洪,赵立新.CBIL(井周声波成像测井)测井在火成岩地层中的应用[J].测井技术,1997,21(1):32-38.
[24]高秋涛,黄思赵,时新芹.用FM I测井研究砾岩、火山岩储层[J].测井技术,1998,22(增刊):56-59.
[25]陈钢花,吴文圣,毛克文.利用地层微电阻率扫描图像识别岩性[J].石油勘探与开发, 2001,28(2):53-55.
[26]于代国,孙建孟,王焕增,等.测井识别岩性新方法—支持向量机方法[J].大庆石油地质与开发,2005,24(5):93-95.
[27]杨斌,匡立春,孙中春,等.一种用于测井油气层综合识别的支持向量机方法[J].测井技术,2005,29(6):511-514.
[28]杨斌,匡立春,施泽进,等.一种基于核学习的储集层渗透率预测新方法[J].物探化探计算技术,2005,27(2):119-123.
[29]李新虎.基于不同测井曲线参数集的支持向量机岩性识别对比[J].煤田地质与勘探, 2007,35(3):72-75.
[30]宋延杰,张剑风,阎伟林,等.基于支持向量机的复杂岩性心测井识别方法[J].大庆石油学院学报,2007,31(5):43-45.
[31]刘得军,冉群英,王斌,等.支持向量机在大庆齐家凹陷测井解释中的应用[J].石油物探,2007,46(2):156-161.
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