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产品展厅>>项目研发>>深层大气田控水开发基础理论及技术方法研究

气井合理配产是气井开发一直在探索,但远没有解决的课题。由于不同气田的地质条件(裂缝、基岩、溶洞等)、完井方式(射孔、压裂等)、边底水位置、数量等不同,配产方式也不相同。例如中石油磨溪龙王庙是裂缝-孔洞(隙)型气藏,克拉2气田为孔隙型,而迪那是裂缝-孔隙型,中石化川科及元坝等大气田是典型的海相沉积,储层埋藏深,是含有天然型裂缝的储集体,通过酸化式压裂可获得高产气量。

由于龙王庙、克拉及川科等气藏地层条件的差异,气藏流动模式也各不相同,试井资料解释、生产数据分析及数值模拟等大型计算分析所依赖的渗流模型也不相同。因此难以形成一种配产模型和标准,也难以获得气井配产统一的公式,甚至对复杂地质构造和开发模型,渗流数学方程都难以建立(或存在流动方程也难以求解)。因此,本项目将从气井配产、理论公式、室内实验、等效数值模拟及大数据等四个方面进行全面研究,力争在气井配产基础理论上有所突破,从而指导我国大气田开发。

考虑水侵优势通道指数的气井合理配产方法研究:完成见水时间理论推导,敏感参数分析,初步完成大数据材料整理

不同类型储层驱替与渗吸过程相对渗透率曲线研究:完成样品驱替与渗吸实验,完成分子动力学建模

考虑相渗滞后和水封气效应的等效数值模拟方法研究:完成等效数值模拟方法研究完成水封气水膜测量实验,继续分子动力学计算

基于大数据分析的气田开发优化技术政策研究:完成大数据分析,筛选出见水时间影响因素,给出合理配产方法

我公司多年来进行气田控水开发研究,针对不同气田的地质条件(裂缝、基岩、溶洞等)不同,完井方式(射孔、压裂等)不同,边底水位置、数量等不同,研究气井配产理论;以气田控水开发和提高采收率为目标,开展基础理论与技术方法研究,未来在我国大气田开发有很好的领先优势。

Products>>Project Development>>Research on key exploration well technology in Jungar basin of oil testing company in 2020

With the increasing exploration and development efforts in Jungar basin, the exploration and development objects are becoming more and more complex, the reservoir quality is becoming more and more diverse, the coexistence of "low porosity, low permeability, low production" and "high temperature, high pressure and high production" is presented, and the well conditions and working conditions are getting worse, which leads to the increasing difficulty of exploration and development. At the same time, limited by the unfavorable factors such as the difficulty of field data acquisition and low utilization degree, after comprehensive benefit evaluation, our company combined with the field experience, compiled a practical program to conduct real-time analysis for the field test data, quickly evaluate the reservoir, effectively identify and prevent the risks, correctly guide the field production, and ensure the successful production of safety oil test operation and post well completion.

At present, the lower southern margin of Jungar basin has made a historic breakthrough, showing great exploration potential and bright prospects. However, the geological conditions in the southern margin of Jungar basin are complex, and the understanding of exploration is low. Through technical research on the target block and breaking through the bottleneck technical problems, the matching technology for oil and gas reservoir testing of the middle lower combination reservoirs in the southern margin of Jungar basin will be initially formed, which will provide support for the construction of large oil and gas areas in the southern margin.

Through the steps of theoretical model establishment, software programming, field application, improvement and optimization, a set of dynamic analysis technology of well testing data suitable for Jungar basin is formed.

Study on high pressure physical parameters of oil, gas and water.

Theoretical study of gas-liquid two-phase vertical pipe flow in wellbore.

Study on calculation method of IPR (inflow performance) and OPR (outflow performance) curves for oil and gas wells.

Research on Optimization Design of oil and gas well production system.

The software for wellbore node analysis of oil and gas wells is developed and applied in the field.

Our company has long carried out the theoretical research and software development of oil and gas nodes, mainly focusing on the formation seepage, wellbore pipe flow, oil and gas nozzle throttling and productivity prediction of each well, providing the integrated production system optimization from underground to throttle valve to surface. According to the geological characteristics and reservoir characteristics of conventional oil and gas reservoirs, shale gas reservoirs and tight gas reservoirs, the factors restricting the production of oil and gas wells are found out, and the production process and recovery factor are optimized, which has important guiding significance for the productivity prediction of oil and gas wells and the optimization of production system, and has great advantages while similar companies don’t have.

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