高能气体压裂技术在陇东油区的应用实践

APPLICATION OF HIGH ENERGY GAS FRACTURING TECHNOLOGY IN LONGDONG AREA IN CHANGQING OILFILD

边底水油藏是长庆油田陇东油区内一个重要的油藏类型 (开发区块有 12个 ,动用地质储量 2 5 97×10 4 t,占全厂含油面积的 17 3% ) ,存在着油层物性好、压力系数偏低 ,油层易受到伤害的特点 ,尤其是其储层地质条件的局限性 ,给其开发过程中增产措施的选择带来一定困难。近几年通过在具代表性的华池油田、元城油田的开发实践中的不断研究、试验、探索 。

The bottom and edge- water reservoir is one of the important oil reservoirs in Longdong area of Changqing Oilfield(those oil bearing area is about 44.9 square kilometers and the geologic reserve developed is up to 2597×10 4 ton, it occupies 17.3 percent of all the factory's oil-bearing area.). The formation has the features of fine physical characteristics and low pressure coefficient, thus the formations are apt to be injured easily. Particularly, for the formation has some limitations of geologic condition, so it is very difficult in selecting the techniques to increase the production. In the past several years, through research, experiment and explore, a series of mature techniques are formed in the practice in Huachi and Yuancheng Oilfield.