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.
出处
《录井工程》
2014年第1期40-43,91-92,共4页
Mud Logging Engineering
关键词
气测录井
烃比折角法
皮克斯勒法
对比
解释
图板
gas logging
refraction angle of hydrocarbon ratios
Pixler Law
compare
interpretation
chart
