锦610块油藏精细地质研究

发布时间：2019-01-13 09:30

【摘要】：针对锦610块投入开发以来一直没有进行过系统的地质体刻画研究,区块目前存在地层对比、构造解析不合理,沉积规律、储层特征及油水关系认识不清等系列地质体认识问题,严重制约了后期开发调整措施的实施,致使区块开发效果逐渐变差,直至目前全面停产。为了重构地下认识体系,恢复区块生产能力,本文通过综合应用钻完井、测录井及开发动态资料,采用地层对比与划分、精细构造解释、沉积微相研究、储层评价、非均质描述、测井二次解释、地质建模等技术手段,对锦610块的地层划分、断裂特征、构造形态、沉积规律、储层特征及油水分布特征等进行了深入研究,并通过测井二次解释重新建立了有效厚度划分标准,确定了储量计算参数,对储量进行了复算,同时依据区块油藏参数建立了三维地质模型,可视化展示了区块的构造特征、储层物性及油层分布,并与复算储量进行了拟合。研究结果表明:锦610块于楼和兴隆台油层均划分为两个油层组、六个砂岩组;构造形态为斜坡背景的断鼻构造,发育5条断层;沉积体系为扇三角洲前缘亚相,以前缘薄层砂和分流河道微相为主;受沉积相带控制,砂体分布总体上自北西向南东方向减薄;储层岩性以含砾、粗~粉砂级砂岩为主,泥质含量中等;储层物性为高孔、高渗;平面、层间非均质性较强,层内非均质性“中—弱”。油水分布主要受断层控制,各断块的高部位油层集中发育,纵向上呈复合块状特点,断块低部位油水间互明显,上部于楼油层为薄~中(厚)互层状边底水油藏,下部兴隆台油层为薄~中互层状边底水油藏。区块原油性质为普通稠油,地层水水型为NaHCO3型,温度、压力系统均为正常温、压系统。
[Abstract]:Since Block Jin610 was put into development, there has been no systematic study on geological body characterization. At present, there are a series of geological body cognition problems in the block, such as stratigraphic correlation, unreasonable structural analysis, sedimentary law, unclear understanding of reservoir characteristics and oil-water relationship, etc. It seriously restricts the implementation of the later development adjustment measures, resulting in a gradual deterioration of the block development effect, until now, the production has been completely shut down. In order to reconstruct the underground recognition system and restore the production capacity of the block, this paper, through the comprehensive application of drilling and completion, logging and development dynamic data, adopts stratigraphic correlation and division, fine structural interpretation, sedimentary microfacies study, reservoir evaluation, etc. Heterogeneity description, logging secondary interpretation, geological modeling and other technical means are used to deeply study the stratigraphic division, fault characteristics, structural morphology, sedimentary law, reservoir characteristics and oil-water distribution characteristics of block Jin 610. Through the secondary interpretation of logging, the effective thickness division standard is re-established, the calculation parameters of reserves are determined, the reserves are recalculated, and the 3D geological model is established according to the reservoir parameters of blocks, which visualizes the structural characteristics of blocks. The reservoir physical properties and reservoir distribution are fitted to the compound reserves. The results show that the Jin610 and Xinglongtai reservoirs are divided into two reservoirs, six sandstone formations, and five faults, which are faulted nose structure with slope background. The sedimentary system is fan-delta front subfacies with thin-layer sand and distributary channel microfacies in the front margin, which is controlled by sedimentary facies belt, and the distribution of sand body is generally thinned from NW to SE. The lithology of the reservoir is gravel bearing, coarse to silt grade sandstone, medium muddy content, high porosity and high permeability, high plane and interlayer heterogeneity, and "medium to weak" heterogeneity within the layer. The distribution of oil and water is mainly controlled by faults. The high parts of each fault block are concentrated and developed, with the characteristics of composite blocks in the longitudinal direction, obvious oil / water interaction in the lower parts of the fault blocks, and thin, medium (thick) interbedded edge and bottom water reservoirs in the upper part of the block, the upper part of which is thin to medium (thick) interbedded edge and bottom water reservoir. The lower Xinglongtai oil reservoir is thin to middle interbedded edge and bottom water reservoir. The crude oil of the block is ordinary heavy oil, the formation water type is NaHCO3 type, the temperature and pressure system are normal temperature and pressure system.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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