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随着南海西部海域随着勘探实践的深入,寻找优质储层的油气藏难度加大,勘探的领域逐渐向深层、复杂储层拓展,解决“低孔、低渗、低阻”的难题日益迫切;莺歌海盆地气田高含CO2气层的情况,直接影响气田的开发生产效果。本文通过对南海西部海域北部湾盆地、珠江口盆地和莺歌海盆地储层的气测录井和测井资料的综合分析和研究,基于交会图和全概率算法开发了一套油气层优快识别系统,成功高效地解决了南海西部海域复杂储层油气层、高含非烃类CO2气层识别的技术难题,经现场应用,与地层测试对比,对油气层识别的符合率达90%以上,为低品位油气层勘探开发纵深发展提供了可靠的技术保障。
With the deepening of exploration practice in the western South China Sea, it is more and more difficult to search for reservoirs of high quality reservoirs, and the exploration fields gradually expand to deep and complex reservoirs to solve the problem of low porosity, low permeability and low resistance The situation of high CO2 gas layer in Yinggehai Basin gas field directly affects the development and production of gas field. Based on the comprehensive analysis and study of gas logging and logging data in Beibu Gulf Basin, Pearl River Mouth Basin and Yinggehai Basin in the western South China Sea, Identification system, successfully and efficiently solved the technical difficulties in identifying hydrocarbon reservoirs and non-hydrocarbon CO2 gas reservoirs in complex reservoirs in the western South China Sea. According to the field application, compared with the formation test, the coincidence rate of hydrocarbon reservoirs is over 90% , Which provides a reliable technical guarantee for the further development of low-grade oil and gas exploration and development.