元素俘获测井在绥中36-1油田的应用

Application of Elemental Capture Spectroscopy to Suizhong 36-1 Oil Field

任宏 李欣 穆贵鹏 郭喜佳

REN Hong LI Xin MU Guipeng GUO Xijia

中海油能源发展股份有限公司监督监理技术分公司, 天津 300452

CNOOC Energy Technology & Services Ltd. Supervision & Technology Co., Tianjin 300452, China

由于井眼条件、钻井液等因素的影响, 利用常规测井资料处理得到的岩性剖面会存在一定偏差, 造成储层孔隙度计算不精确甚至流体性质判别失误。元素俘获测井(ECS)是斯伦贝谢公司研发的新一代测量地层元素的测井技术, 利用其资料确定黏土含量及类型从而获得精确的岩性剖面, 结合常规测井数据可以准确计算地层孔隙度, 提高测井解释的符合率。介绍了ECS测井原理及其仪器参数, 通过在绥中36-1油田的应用, 阐述ECS的测井优势, 对该技术的推广应用有着重要意义。

Influenced by many factors, such as borehole condition and drilling fluids, the lithological profile obtained by the conventional logs will be in disagreement with the actual, resulting in poor accuracy in calculation results of reservoir porosity, and even failure in fluid property identification. ECS (Elemental Capture Spectroscopy) is a new well-logging technology developed by Sch-lumberger used for obtaining the formation elements, which can obtain accurate clay contents and clay types, obtaining better lithology profile. Besides, the ECS can be used to calculate the porosity accurately, improving the coincidence rate in logging data interpretation by combining with compensated density and compensated neutron log. In this paper, the principle and instrument parameters of ECS are introduced, and the advantage of ECS is described. Through application in SZ36-1 oil field, it has proved that ECS is very successful in logging data interpretation, and significant in application.

https://doi.org/10.3969/j.issn.l008-2336.2013.04.070