靖边气田陕100井区马五_(1+2)储层水平井开发优化

Optimization of horizontal wells development of Mawu_(1+2) Reservoir of Shan100 Well area in Jingbian Gas Field

根据研究区实际的储层特点,对水平井开发的可行性进行了分析。结果表明,陕100井区马五1+2储层地质条件适合水平井开发。在对研究区三维精细地质建模的基础上,采用数值模拟对水平井的井网方式、水平段长度、井排距、开发指标等进行了预测。结果表明,最优的井网形式是水平段平行对称布置,采用同时穿越马五12和马五13的阶梯状水平段的水平井,井距和排距均为2 100 m。预测第10年年末,阶梯状水平井的采出程度为48.78%,比直井的采出程度高16.6%,研究结果可以指导研究区水平井的高效开发。

According to the practical reservoir characteristics of the study area, the feasibility of horizon-tal wells development was analyzed, and the result showed that the reservoir characteristics of study area were suit to develop horizontal wells. Based on the establishment of three-dimensional fine geological modeling of study area, using numerical simulation, the well network pattern, length of the horizontal section, well spac-ing, row spacing and development indicators were predicted. The simulation result showed that the optimal well network was the symmetrical horizontal section, and the horizontal well had echelonment horizontal sections tra-versing the two layers of Mawuf and Mawuf, and the well spacing and row spacing were both 2 100 m. The re-sult of development indicators prediction showed that, after 10 years, the recovery percentage was 48.78 %, which was 16.6 % higher than that of vertical wells. The study result can guide the study area to develop efficiently.