苏里格气田水平井开发技术经济效果分析

Analysis on Economic Effects of Exploitation Technology for Horizontal Well in Sulige Gas Field

苏里格气田属于典型的三低气藏,储层地质条件复杂,单井产量低,经济有效开发技术难度很大,采用水平井开发后经济效益明显提高。从分析苏里格气田储层特点入手,研究该气田水平井部署地质条件,对该气田采用配套的水平井储层改造技术,气井产量大幅提高。经济分析表明,苏里格气田采用水平井开发税后财务内部收益率为15.5%,高于直井开发税后财务内部收益率(12.02%)。

Sulige Gas Field is typical 'three-lower' reservoir featuring the complex geological conditions in reservoir stratum and low yield of single well. It is rather difficult to exploit it with economical technologies. However, the use of horizontal well development method brings more economic benefits. Starting with the analysis on the reservoir characteristics in Sulige Gas Field, the research has been made to the geological conditions for its horizontal well layout, and the proper reconstruction technology has been applied to the horizontal well reservoir. As a result, the output of gas well is experiencing a sharp increase. The economic analysis showed that the financial internal rate of return(FIRR)in Sulige Gas Field increased after adoption of the horizontal well development method to 15.5 % from 12.02 % of vertical well development.