底水稠油热采温度场影响因素物理模拟研究

利用高温底水物理模拟实验系统,以渤海LD底水油田为例,依据目标层位的储层特征,填物理模型,开展高温底水物理模拟试验研究。模拟研究了热水驱和蒸汽驱、直井和水平井、注蒸汽温度、水平井井筒距底水距离条件下温度场的变化特征。实验研究结果表明,热采驱替方式、井型、水平井筒的位置、注蒸汽温度对底水稠油油藏热采时温度场的形成发育都有明显的影响。温度场的变化决定稠油油藏中油层被加热的范围,影响着底水稠油热采开发效果。利用高温底水物理模拟研究热采温度场的实验技术可为渤海底水稠油热采开发方案的制定提供技术支持,可推广应用在渤海底水稠油热采开发的研究中。

Factors affecting bottom water temperature field in heavy oil thermal recovery with physical simulation method

According to the characteristics of bottom-water reservoir of LD Oilfield in Bo hai Bay, the physical simulation experiments of high-temperature and bottom-water reservoir were carried by using artificial sand-packing models to study thechange rules of temperature field. The change features of temperature field have been studied with different in fluencing factors, such as the displacement mode of hot water flooding, steam flooding, vertical wells, horizontal wells, steam temperature and the distance of horizontal well bore to bottom water. The experimental results showed that thermal displacement, shaft type, horizontal shaft position, the steam temperature of thermal recovery in heavy oil reservoir with bottom water formation and development of temperature field has a significant impact, and changes of temperature field of heavy oil reservoirs in oil reservoir heating, Affect the development effect of bottom water in heavy oil thermal recovery. Using high-temperature bottom water physical simulation experiment for temperature field study on thermal recovery technology for thermal recovery in viscous oil in Bohai Bay with bottom water development programme was established to provide technical support. Lips in the Bohai Bay water thermal recovery in heavy oil development by the end of the study.