关于吉林大情字井油田测井解释方法的研究

Research of Jilin Daqingzi Oil Field Well Logging Interpretation Methods

吉林大情字井油田油藏属于构造环境下的岩性油气藏,整体以岩性控制为主,油气成藏条件比较复杂,构造幅度低,油水分异作用差;主要目的层多为低孔低渗储层,且泥质含量高、束缚水饱和度高、地层水矿化度差异大;导致不同层位或同一层位不同部位油、水识别标准不一致,造成解释过程中油、水层识别困难。通过对大情字井油田主要开发目的层存在的解释问题开展储层评价方法研究,建立不同区块不同地层的油、水解释标准,建立孔隙度、渗透率解释模型,形成一套适合吉林油田特点的油、水层解释评价技术,最终实现提高测井解释符合率的目的,使测井解释在油田开发中更好地发挥作用。

The oil pool of Jilin Daqingzi Oil Field is lithologic hydrocarbon reservoir. It is mainly controlled by lithologic character with complex hydrocarbon accumulation, low amplitude structure and less oil-water differentiation. The main strata is low porosity and low permeability reservoir with high shale content, high bound water saturation and large discrepancy of the formation water salinity. It causes the different standards of the oil-water identification in different layers or the different parts in the same layer. And it causes the difficulty in oil and water identification in the interpretation process. Aiming at the interpretation problems in major development target layer of Daqingzi Oil Field, this paper conducts the reservoir assessment methods research. The different oil-water interpretation standards for different blocks and layers are established. The porosity and permeability interpretation model is set.Finally a suitable oil-water interpretation assessment technology is formed for the oil field in Jilin to improve the coincidence rate of well logging interpretation. Therefore, the well logging interpretation can make more contributions to oil field development.