气测录井解释评价的一种新方法——烃比折角法
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摘要
建立在烃比值基础上的皮克斯勒法是形成最早、实用性较强的一种气测录井解释评价方法,多年来在储集层流体性质分析判断中发挥了重要作用,然而随着油气勘探程度和气测录井检测分析精度的提高,该方法表现出了一定的局限性。借鉴皮克斯勒法,在尝试应用皮克斯勒烃比值倒数(C2/C1、C3/C1、C4/C1)的基础上,通过对该烃比值参数在储集层解释评价中大量的试验性研究,创建了气测录井烃比折角法。该方法的优势是反映储集层的含油性和含水性更加准确,突出特点是通过烃比值点连线在C3/C1比值点的折角能明确反映含水性,在很大程度上弥补了皮克斯勒法在储集层含水性解释评价方面的不足;劣势是对储集层的含气性尚不能有效评价。与应用皮克斯勒法对比分析表明,采用气测录井烃比折角法不但使油层解释更加准确,而且可有效识别油水同层与水层。
On the basis of the hydrocarbon ratio,Pixler Law is the earliest formation of practical gas logging interpretation and evaluation method and plays an important role over the years in reservoir fluid analysis and the nature determination,but the method showed some limitations with the improvement of oil and gas exploration degree and the accuracy of gas logging detection and analysis.Making use of Pixler Law,trying toapply the reciprocals of Pixler hydrocarbon ratios(C2/C1,C3/C1,C4/C1)and experimental study on the hydrocarbon ratios in reservoir interpretation and evaluation,refraction angle of hydrocarbon ratios for gas logging was created.Its advantage is to reflect reservoir oil and water content more precisely.The hydrocarbon ratios of C2/C1,C3/C1and C4/C1were connected in a broken line,the prominent feature is that water content can be reflected more clearly by the angular of the line at the point of hydrocarbon ratio C3/C1,which solved the limitations of interpretation and evaluation of Pixler Law in reservoir fluid properties.Its disadvantage is that no effective evaluation for reservoir gas has been reached yet.Comparative analysis with Pixler Law showed that the use of refraction angle of hydrocarbon ratios not only can make the interpretation for oil reservoirs more accurately,but also effectively identify oil-water layers and water layers.
On the basis of the hydrocarbon ratio,Pixler Law is the earliest formation of practical gas logging interpretation and evaluation method and plays an important role over the years in reservoir fluid analysis and the nature determination,but the method showed some limitations with the improvement of oil and gas exploration degree and the accuracy of gas logging detection and analysis.Making use of Pixler Law,trying toapply the reciprocals of Pixler hydrocarbon ratios(C2/C1,C3/C1,C4/C1)and experimental study on the hydrocarbon ratios in reservoir interpretation and evaluation,refraction angle of hydrocarbon ratios for gas logging was created.Its advantage is to reflect reservoir oil and water content more precisely.The hydrocarbon ratios of C2/C1,C3/C1and C4/C1were connected in a broken line,the prominent feature is that water content can be reflected more clearly by the angular of the line at the point of hydrocarbon ratio C3/C1,which solved the limitations of interpretation and evaluation of Pixler Law in reservoir fluid properties.Its disadvantage is that no effective evaluation for reservoir gas has been reached yet.Comparative analysis with Pixler Law showed that the use of refraction angle of hydrocarbon ratios not only can make the interpretation for oil reservoirs more accurately,but also effectively identify oil-water layers and water layers.
引文
[1]姚汉光.国外使用的一些气测录井解释方法[C]∥《录井技术》编辑部.录井技术文集(第一集).北京:石油工业出版社,1999:111-119.
[2]耿长喜,刘丽萍,夏峥寒.录井解释评价技术面临的困难与挑战[J].录井工程,2006,17(1):18-20.
[3]余明发,边环玲,庄维,等.气测录井皮克斯勒图板解释方法适用性解析[J].录井工程,2013,24(1):14-19.
[4]宋昌顺,张晋元.鄂北地区气测现场解释评价研究[J].录井工程,2006,17(增):24-28.
[5]侯平,史卜庆,郑俊章,等.利用气测录井简易参数法判别油、气、水层[J].录井工程,2009,20(1):21-24.
[6]大港油田科技丛书编委会.录井技术[M].北京:石油工业出版社,1996:87-107.
[7]李俊国,吴淑琴,苏沛强,等.歧口凹陷低电阻率油气层分布规律研究[J].录井工程,2012,23(4):69-73.
[8]大港油田科技丛书编委会.油气藏与分布[M].北京:石油工业出版社,1999:55-72.
[9]李三明,方锡贤,薛宗安,等.宝浪油田气测变化规律及解释方法改进[J].录井工程,2006,17(1):21-24.
[10]侯平,史卜庆,郑俊章,等.应用录井资料综合判别油、气、水层方法[J].录井工程,2008,19(3):1-8.
[2]耿长喜,刘丽萍,夏峥寒.录井解释评价技术面临的困难与挑战[J].录井工程,2006,17(1):18-20.
[3]余明发,边环玲,庄维,等.气测录井皮克斯勒图板解释方法适用性解析[J].录井工程,2013,24(1):14-19.
[4]宋昌顺,张晋元.鄂北地区气测现场解释评价研究[J].录井工程,2006,17(增):24-28.
[5]侯平,史卜庆,郑俊章,等.利用气测录井简易参数法判别油、气、水层[J].录井工程,2009,20(1):21-24.
[6]大港油田科技丛书编委会.录井技术[M].北京:石油工业出版社,1996:87-107.
[7]李俊国,吴淑琴,苏沛强,等.歧口凹陷低电阻率油气层分布规律研究[J].录井工程,2012,23(4):69-73.
[8]大港油田科技丛书编委会.油气藏与分布[M].北京:石油工业出版社,1999:55-72.
[9]李三明,方锡贤,薛宗安,等.宝浪油田气测变化规律及解释方法改进[J].录井工程,2006,17(1):21-24.
[10]侯平,史卜庆,郑俊章,等.应用录井资料综合判别油、气、水层方法[J].录井工程,2008,19(3):1-8.