龙岗东龙会场区块飞仙关组气藏储层特征研究及有利区优选
发布时间：2019-01-05 15:19
【摘要】：四川盆地北部礁、滩气藏领域经过多年来的研究,取得了一系列的成果认识,对该区的滚动开发起到了重要的指导作用。本文以沉积学、有机地球化学、储层地质学、开发地质学、油气地质学、构造地质学等理论为基础,综合应用研究区及邻区内已有的钻井、录井、测井等资料,开展了龙岗东部龙会场区块飞仙关组地层划分与对比、鲕粒滩展布规律、储层特征、储层发育控制因素、有利区优选等方面的研究。 基于区域上飞仙关组向上变浅旋回特点,以沉积旋回理论为指导,建立了相似岩性特征的地层划分方案及地层格架,将研究区飞仙关组划分为5个旋回,详细而准确界定了各级旋回特征。同时,建立了相应的沉积相模式,将研究区飞仙关组沉积相划分为：开阔台地相、局限台地相、蒸发台地相、海槽相-斜坡相带和若干个亚相、微相,其中台缘相为最有利储集相带。在台缘相区内Ⅱ、Ⅲ旋回是鲕粒坝(滩)发育的时期,Ⅱ旋回单层厚度最大,横向分布最为稳定,云化强烈,储层发育最好。 区内主要发育裂缝孔隙性鲕滩储层,岩性主要为鲕粒白云岩和亮晶鲕粒灰岩,以Ⅲ类储层为主,少见Ⅰ、Ⅱ类。沉积相、构造裂缝、成岩作用是本区飞仙关组储层三大受控因素,其中优质鲕滩储层发育主要受混合水白云石化及两期埋藏溶蚀作用等地质因素影响。 研究认为,台地边缘相带为最有利富集区,随海槽逐渐关闭、台地增生,原斜坡相-海槽过渡区为次有利区。结合最新三维地震成果,计算得有利相带面积为334.61km2,三维鲕滩“亮点'面积为212.96km2,鲕滩储层最有利的发育区域面积约为178km2。借用前期参数成果,计算了龙会场、铁山南鲕滩气藏储量,分别为27.216×108m3、46.79×108m3。并在各典型气藏开展了18个圈闭资源量估算,18个圈闭的总面积为133.77km2,总资源量为325.43×108m3。
[Abstract]:After many years of research in the field of reef and beach gas reservoir in northern Sichuan basin, a series of achievements have been obtained, which plays an important role in guiding the rolling development of the area. This paper is based on the theories of sedimentology, organic geochemistry, reservoir geology, development geology, oil and gas geology, tectonic geology, etc. The stratigraphic division and correlation of the Feixianguan formation, the distribution law of oolitic beach, reservoir characteristics, reservoir development control factors, favorable area selection and so on are studied. Based on the upward shallow cycle characteristics of the Feixianguan formation in the region, and guided by the sedimentary cycle theory, the stratigraphic division scheme and stratigraphic framework with similar lithologic characteristics are established, and the Feixianguan formation in the study area is divided into five cycles. Detailed and accurate definition of the characteristics of cycles at all levels. The sedimentary facies of the Feixianguan formation are divided into open platform facies, limited platform facies, evaporation platform facies, trough facies, slope facies and several subfacies, microfacies. The platform margin facies is the most favorable reservoir zone. The 鈪，
本文编号：2401943
[Abstract]:After many years of research in the field of reef and beach gas reservoir in northern Sichuan basin, a series of achievements have been obtained, which plays an important role in guiding the rolling development of the area. This paper is based on the theories of sedimentology, organic geochemistry, reservoir geology, development geology, oil and gas geology, tectonic geology, etc. The stratigraphic division and correlation of the Feixianguan formation, the distribution law of oolitic beach, reservoir characteristics, reservoir development control factors, favorable area selection and so on are studied. Based on the upward shallow cycle characteristics of the Feixianguan formation in the region, and guided by the sedimentary cycle theory, the stratigraphic division scheme and stratigraphic framework with similar lithologic characteristics are established, and the Feixianguan formation in the study area is divided into five cycles. Detailed and accurate definition of the characteristics of cycles at all levels. The sedimentary facies of the Feixianguan formation are divided into open platform facies, limited platform facies, evaporation platform facies, trough facies, slope facies and several subfacies, microfacies. The platform margin facies is the most favorable reservoir zone. The 鈪，
本文编号：2401943
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