摘要
针对广西北部湾盆地涠洲A油田流一段下层序储层非均质性强、储量难以动用的问题,从高分辨率层序地层格架和沉积微相研究出发,并结合井控提高分辨率技术,指导砂体精细解释和落实;进而利用振幅统计分析优选地震属性和AVF反演预测孔隙度2种方法相融合刻画优质储层,寻找储层"甜点"。通过该技术的应用,厘清了扇三角洲多期多旋回沉积内幕及各期砂体的展布、叠置特征,刻画了单砂体内部非均质特征,使储层空间展布形态和内部物性变化得以精细描述;以此为依据,涠洲A油田在二期开发实施前,对井位、井轨迹进行了调整及优化,实施后取得了较好的开发效果。该技术针对性较强,快速有效,可以作为勘探开发一体化成功应用实施的典型案例。
There are strong heterogeneity problems in the lower sequence of L1 formation in Weizhou A Oil- field, and the reservoir is difficult to develop. Focusing on these issues, the sand body is interpreted care- fully based on the study of high resolution sequence stratigraphic framework and sedimentary microfacies in combination with the technology of well-controlled and increased resolution improvement. Through the method of amplitude statistics analysis and AVF inversion in predicting porosity, the high quality reservoir is described and the ＂sweet point＂ reservoir is found. Through the application of this technology, the multi-period and multi-cycle sedimentary characters and the distribution of the sand bodies are recognized, and the characteristics of internal heterogeneity of single sand bodies are described. Therefore, the spatial distribution pattern and the internal physical property of the reservoir are precisely described. Based on the results above, the well location and trajectory are adjusted and optimized before the second development phase of Weizhou A Oilfield. The implementation of the technology leads to the good development results. This technology is hence highly targeted, fast and effective, and can be regarded as a typical case of explo- ration and development integration.
出处
《地质科技情报》
CSCD
北大核心
2017年第6期279-285,共7页
Geological Science and Technology Information
基金
国家重大课题专项"南海西部海域低渗油藏勘探开发关键技术"(2016ZX05024-006)
关键词
储层“甜点”
高分辨率层序地层格架
沉积微相
井控提高分辨率技术AVF反演
＂sweet point＂ reservoir
high resolution sequence stratigraphic framework
sedimentary micro-facies
well-controlled and increased resolution technology
AVF inversion
