南堡油田浅层低对比度油层识别方法研究

Study on Identification Methods of Shallow Low-contrast Reservoir in Nanpu Oilfield

段健 朱露

DUAN Jian ZHU Lu

中国石油天然气股份有限公司冀东油田分公司, 河北唐山 063200

JiDong OilField Company, CNPC, Tangshan, Hebei 063200, China

由于油藏的沉积环境复杂、油藏构造幅度低、高束缚水饱和度和黏土矿物附加导电性等多个因素的综合影响，南堡油田浅层油藏存在大量低对比度油层及油水同层。通过对36个典型低对比度油层和水层敏感参数的系统研究，提出了5种具有典型意义的低对比度油层识别方法：（1）Rwa（Rt）/Rwa（△SP）-Vsh交会图版法；（2）测井曲线敏感识图法；（3）自然电位幅度差异识别法；（4）基于钙质校正的碳氧比测井法；（5）常规动静态资料综合识别方法。通过矿场实践，南堡油田大量低对比度油层被识别出来并获得工业油流，在低对比度油层的解释中取得了较好的应用效果。

Due to the combined influence of many factors in the reservoir, such as complex sedimentary environment, low amplitude structure, high irreducible water saturation and additional conductivity of clay mineral, there are a lot of low-contrast oil layers and oil-water layers in shallow reservoirs of Nanpu Oilfield. Based on the systematic study of the sensitive parameters of 36 typical low-contrast oil layers and water layers, 5 typical identification methods for low-contrast oil layers have been proposed:(1)Rwa(Rt)/Rwa(△SP)-Vsh intersection pattern method; (2)logging curve sensitivity diagram method; (3)amplitude difference recognition method of natural potential; (4)carbon-oxygen ratio logging method based on calcareous content correction; (5)comprehensive identification method of conventional dynamic and static data. Through the practice of the field, a large number of low-contrast oil layers in Nanpu Oilfield have been identified and obtained industrial oil flow, and good application results have been achieved in the interpretation of low-contrast oil layers.

十二五国家油气重大专项"渤海湾盆地黄骅坳陷滩海开发技术示范工程"（201105050）。

https://doi.org/10.3969/j.issn.1008-2336.2018.04.062