扇三角洲相储层“甜点”预测技术在涠洲A油田的应用
发布时间：2018-10-26 21:25
【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。
[Abstract]:In order to solve the problem of strong heterogeneity and hard to use reserves in the lower sequence reservoir of Weizhou A oil field in Weizhou Bay Basin, Guangxi, starting from the study of high-resolution sequence stratigraphic framework and sedimentary microfacies, and combining well control to improve the resolution, To guide the fine interpretation and implementation of sand bodies; Furthermore, the two methods of amplitude-statistical analysis of optimal seismic attributes and AVF inversion prediction of porosity are combined to depict high quality reservoirs and to search for "dessert" of reservoirs. Through the application of this technology, the multi-period multi-cycle sedimentary insider of fan delta and the distribution and overlay characteristics of sand bodies in each period are clarified, and the heterogeneity of single sand body is depicted, which makes the spatial distribution of reservoir shape and the change of internal physical properties more accurately described. On the basis of this, well location and well trajectory were adjusted and optimized before the second stage of development in Weizhou A oilfield, and good development results were obtained. This technology has strong pertinence and is fast and effective. It can be used as a typical case of successful application of integrated exploration and development.
【作者单位】： 中海石油(中国)有限公司湛江分公司研究院;
【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)
【分类号】：P618.13
[Abstract]:In order to solve the problem of strong heterogeneity and hard to use reserves in the lower sequence reservoir of Weizhou A oil field in Weizhou Bay Basin, Guangxi, starting from the study of high-resolution sequence stratigraphic framework and sedimentary microfacies, and combining well control to improve the resolution, To guide the fine interpretation and implementation of sand bodies; Furthermore, the two methods of amplitude-statistical analysis of optimal seismic attributes and AVF inversion prediction of porosity are combined to depict high quality reservoirs and to search for "dessert" of reservoirs. Through the application of this technology, the multi-period multi-cycle sedimentary insider of fan delta and the distribution and overlay characteristics of sand bodies in each period are clarified, and the heterogeneity of single sand body is depicted, which makes the spatial distribution of reservoir shape and the change of internal physical properties more accurately described. On the basis of this, well location and well trajectory were adjusted and optimized before the second stage of development in Weizhou A oilfield, and good development results were obtained. This technology has strong pertinence and is fast and effective. It can be used as a typical case of successful application of integrated exploration and development.
【作者单位】： 中海石油(中国)有限公司湛江分公司研究院;
【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)
【分类号】：P618.13
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