南阳凹陷东庄油田气测低显示油气层评价方法  

The evaluation method of oil and gas zones with low gas logging shows in Dongzhuang Oilfield of Nanyang sag.

作　　者：韩小俊 

机构地区：[1]河南石油管理局地质录井公司

出　　处：《录井工程》2009年第2期25-28,共4页Mud Logging Engineering

摘　　要：南阳凹陷东庄油田存在气测显示低的特征,给气测录井异常识别和评价增加了难度,从而影响了录井油气层解释符合率。通过对该油田油气层气测特征的分析研究,根据东庄油田试油层气测参数统计,分别建立了用于区分水层、干层与价值层区的重烃相对含量与Q值解释图板和用于区分油层与油水同层区的C_2和C_3差值与甲烷相对含量解释图板,弥补了因岩屑挑取困难而造成的其他方法评价的不足。将这两套评价方法应用于该油田4口井10个层评价,经试油验证,解释符合率达90%,一定程度上提高了东庄油田油气层的解释符合率。Dongzhuang Oilfield in Nanyang sag presents the features of low gas logging shows,which has brought about certain influences on abnormal distinction and evaluation of gas logging,then affected the interpretation coincidence rate of oil and gas reservoirs.By analysis on gas logging features of oil and gas zones in the field,the author established the interpretation chart of heavy hydrocarbon relative content with Q value to distinguish water,dry,and valuable zones and the interpretation chart of C_2 and C_3 difference value with methane relative content to distinguish oil zone and oilwater zones according to gas logging parameter statistics got from oil tested zones in Dongzhuang Oilfield,which could made up the disadvantages of other methods due to the difficulty to select cutting.These two sets of evaluation methods have been applied for evaluating 10 zones of 4 wells of the oilfield,it was verified by oil testing that the interpretation coincidence rate has reached 90%,increasing the interpretation coincidence rate at certain extent for oil and gas zones in Dongzhuang Oilfield.

关 键 词：东庄油田 气测录井 油气层特征 低显示 解释图板 符合率 

分 类 号：TE112[石油与天然气工程—油气勘探] TE142