为了探索高粘稀油油藏降低储层原油粘度、提高渗流能力、增加流度，进一步研究区块加密后提高采收率的新技术、新方法，2006—2008年开展了“蒸汽驱油现场先导试验”。针对油藏原油粘度高、渗透率低、粘土含量高、有效厚度小等特点，开展了室内物模实验，进行了蒸汽驱油可行性研究；应用数值模拟技术优选了注汽参数和驱替方式；开展了地层防膨预处理和井筒隔热技术研究。现场试验3个井组，累积增油1.81×104 t。通过试验研究，给出了低渗高粘稀油油藏适合蒸汽驱油技术的地质条件。

To develop new technology and advanced approaches to reduce viscosity of crude oil reservoirs, increase permeability and improve flow rate of high viscous light oil reservoir, and then further improve recovery of block with more intensive well network, steam-flooding pilot studies were implemented from 2006 to 2008. Based on the formation nature characterized of high viscosity, low permeability, high clay content, and thin effective thickness, in-house physical modeling was undertaken in feasibility study; steam injection parameters and injection methods were optimized with numerical simulation; ground anti-swelling and wellbore heat insulation technologies were carried out; field tests included 3 wells, and cumulative increase of recovery was 1.81×104 t. The studies indicated suitable reservoir geological conditions for steam-flooding extraction of low permeable high viscous light oil reservoir.