摘要
针对苏里格气田开发的难点，结合径向水平井钻井新工艺特点，开展了在低渗气田实施径向水平井钻井的可行性研究。在不考虑常规水平井对近井壁地带伤害的前提下，通过对常规水平井和径向水平井渗流场的对比分析可知．虽然径向水平井的单个孔眼小而导致单个孔眼产气量约为常规水平井井眼产气量的0．8倍，但是由于其污染小、成本低、周期短、施工便捷等优势，可以方便地采用同层面多口径向水平井眼的方法扩大波及面积，其仍不失为开发低渗气藏、薄油藏的新思路和新方法。
Aiming at difficulties of the Sulige gas field development, the feasibility study of implementation of radial horizontal well drilling in low permeability gasfield is carried out, combined with the new technical features of the radial horizontal well drilling. Under the premise of ignoring near wellbore formation damage of the conventional horizontal well, we can know that, by comparative analysis of percolation （seepage） fields of conventional horizontal wells and radial horizontal wells, although a single eyelet of a radius horizon- tal well is small, so it causes the gas production from it is approximately 0~8 times than that from the single eyelet of conventional horizontal well. But because of its less pollution, low cost, short cycle, convenient construction and other advantages, you can easily use the same horizon and multi-branch radial horizontal wellbores method to enlarge the swept area, which is still regarded as a new idea or new method of developing low-permeability gas reservoirs or thin reservoirs.
关键词
径向水平井
渗流场
地层压力
水平井产量
radial horizontal well
percolation （seepage） field
formation pressure
horizontal weI1 production
