西湖凹陷气测录井烃气指数图版的应用

Application of Gas Logging Hydrocarbon Index in Xihu Sag

庄建建 杨彩虹 颜方方

ZHUANG Jianjain YANG Caihong YAN Fangfang

中国石油化工股份有限公司上海海洋油气分公司研究院, 上海 200120

Institute of SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, China

传统的气测录井油气判别方法如PIXLER、烃三角图法等具有区域局限性,不能直接用于西湖凹陷的油气层评价。通过对研究区已钻井的多个测试层气测录井数据进行统计,计算出烃气湿度指数和烃气密度指数,建立了适合西湖凹陷探区的气测烃气指数图版。8口井共计9个测试层的验证有效性为77.8%,表明该图版判别方法具有较好的应用效果,可以为现场快速评价油气层提供有效参考。

Traditional oil and gas discrimination methods by gas survey logging, such as P1XLER and hydrocarbon triangular plot, has great limitations, and can not be directly used to evaluate hydrocarbon characteristics in Xihu Sag. By collecting lots of hydro-carbon component data of test formation in study area, we figure out the hydrocarbon humidity index and hydrocarbon density index and finally establish the hydrocarbon gas index plot for Xihu Sag. 9 test layers of 8 wells are used to test the validity and the number is 77.8%, indicating that the index illustration method is effective and can be a good guide for field assessment of oil and gas layers.

https://doi.org/10.3969/j.issn.1008-2336.2013.02.094