非均质疏松砂岩储层水平井砂液(水)协同产出剖面动态演化机制及模拟

控砂和控水是疏松砂岩油气藏水平井高效开发的主导技术策略，但由于对储层向水平井的流（油气水）固（地层砂）入流剖面认识不清，砂水控制开发效果亟待大幅提高。实际上，由于储层原始非均质性，以及流体和地层砂之间未知的微观协同产出机制，水平井流固产出剖面存在非均质性并且随时间和空间发生动态演化。缺乏对砂水产出剖面动态演化的深刻认识以及由此导致的砂水分治策略，是目前水平井控砂控水开发面临的关键技术瓶颈。项目拟针对上述问题，开展非均质疏松砂岩储层水平井砂液（水）协同产出剖面动态演化机制及其可视化模拟研究，重点探索储层流体和砂粒产出的微观协同机制、长周期流固产出对储层物性影响机制及规律、非均质储层水平井流固产出剖面动态演化模拟及规律，并研究其在水平井砂水协同控制中的应用方法；最终形成一套非均质砂岩储层砂液产出剖面动态演化模拟方法及软件系统，为长井段水平井砂水高效协同控制、开采完井与生产优化提供重要技术支撑。

Sand and water control are main technical strategies for high-efficiency horizontal wells development in loose sandstone oil and gas reservoirs. But, lack of awareness of solid (sand) and fluid (oil, gas and water) inflow profile into wells limits the effect of sand and water control in horizontal wells. In fact, the initial properties of formation or reservoir is of obviously heterogeneous. Sands and fluid are produced from formation with a certain micro synergetic mechanism, which is still not well known. The inflow profile of solid and fluid tend to be also heterogeneous and evolve dynamically with time and space. Generally, lack of deep knowledge of the inflow profile dynamic evolution and the resultant tactics of separated sand-water controlling are the key technical bottlenecks for horizontal wells development. Aiming at the above problems, the research project will focus on the synergetic time-space evolution mechanism and dynamic simulation of solid-fluid inflow profile of horizontal wells in heterogeneous sandstone reservoirs. The detailed study contents involve micro synergetic coordination mechanism of sand-fluid production, the mechanism of affecting law of long-term solid-fluid removal on reservoir properties, and the visual and dynamic simulation of solid-fluid production profile evolution, with final investigation of the application method in systematic sand-water control in long-interval horizontal wells. The objective of the study is to develop an integrated model to simulate the dynamic changing process of solid-fluid inflow profile and the corresponding software package, which can provide key and strong supports for sand-water control, well completion and production optimization.