海上多层稠油蒸汽吞吐地层热量利用率的影响规律研究

Study on the Influence of Heat Utilization in Multi-layer Heavy Oil Steam

目前,中国海洋石油平台开发的钻完井投资和工程投资一直居高不下,热采开发经济效益不够理想。注热过程中进入油层有效热量的多少,直接影响开发效果的好坏,提高注入热量的热利用效率是保证热采开发效果、提高海上油田经济效益的重要方面。为精确计算多层稠油热利用率,文章根据某海上油田地质油藏特征,建立多层稠油边水油藏典型理论模型,利用数值模拟技术,开展地质油藏参数以及储层和流体的热物性参数对地层热利用率的影响规律和对开发效果的影响研究,最终为提高蒸汽吞吐地层热利用率和开发效果提供理论基础。

At present, the drilling and completion investment and project investment of offshore oil platform development in China have been high, and the economic benefits of thermal production development are not ideal. The amount of effective heat flowing into the oil layer during the heat injection process directly affects the development effect. Improving the thermal utilization efficiency of the injected heat is an important aspect to ensure the development effect of thermal production and improve the economic benefits of offshore oilfields. In order to accurately calculate the thermal utilization rate of the multilayer heavy oil,according to the characteristics of the geological reservoir of an offshore oilfield, establish the typical theoretical model of the water reservoir of the multilayer heavy oil side, and provide the theoretical basis ofimproving the thermal utilization rate and development effect.