水平井蒸汽辅助重力驱双模研究初探

A BI-MODEL RESEARCH ON STEAM-ASSISTED GRAVITY DRIVE

蒸汽辅助重力驱是水平井结合注蒸汽技术开采稠油的一种方式。国内在这一技术的研究和应用上几乎还是空白。本研究将通过物模及数模的双重工作，结合我国油藏地质特点验证这一新技术在我国应用的可行性。通过研究，对蒸汽辅助重力驱开采中的一些规律有了较为明确的认识，并对某些参数作了初步筛选。此项工作对蒸汽辅助重力驱技术在我国的推广应用有着一定的参考价值。

Steam-Assisted Gravity Drive is a mathod for heavy oil recovery which combines the techniques of horizontal well and thermal recovery. The most important character of this technique is that it utilizes the gravity override in steam-drive process, and therefore greatly enhances efficiency in thermal utilization. Most of the pioneer experiments in the world were mainly carried out in Cannada, and satisfactory results of this technique have been obtained. The present paper explores the possibility of application of this new technique in China, through physical model experiments and a great deal of numerical simulation reserch, and taking into accout geological conditions of some reservoirs in China. Some new understanding on the rules of Steam-Assisted Gravity Drive have been gained and a preliminary work to screen some paramenters has been done. Obviousoly, the study is of useful in promoting the application of Steam-Assisted Gravity Drive techniques in China.