川中低渗油气田开采新工艺应用评价

川中磨溪气田是一个含边水、低渗、含硫的视孔隙性的整装气田,强腐蚀性一直以来制约着天然气的生产;而油藏具有特低孔渗、裂缝性和强烈非均质性,一般采用衰竭式开采,压力降低较快,采出难度增加,采用挤凝析油解堵、小泵深抽、玻璃钢油管防腐、渗吸注水二次采油、化学清防蜡等一系列配套的新工艺、新技术和工具后,较大地提高了原油采收率,增产效果显著.

Application of New Production Technology in Low Permeability Oil/Gas Field of Central Sichuan

Moxi gas field in Central Sichuan is a porous gas field with edge water - bearing , low - permeability and sulfur bearing . It has stronger corrosivity, with the result that the production of natural gas is restricted . For the features of the reservoir are low permeability, fractured and heterogeneity, natural depletion make pressure reduct and increase the difficulty of production. Through adopting a series of matching new technology and tools, such as squeeze gas condensate plug removal, glass tube corrosion prevention, chemical paraffin control ect., the producible oil index is increased, and stimulation effect is obvious.