苏里格气田水平井整体开发技术优势与条件制约——以苏53区块为例

苏里格气田是典型的低渗、低压、低丰度岩性气藏,单井产量低,建井数量多,直井开发经济效益较差。为提高单井产量,改善气田开发效果,进一步提高开发效益,转换开发方式,开展气藏水平井开发技术攻关,取得了阶段性成果。在苏53区块开展水平井整体开发试验,利用水平井整体开发建成10.0×108m3/a天然气生产能力,是苏里格气田唯一的水平井整体开发建设的区块。由于受到气藏埋藏深、储层非均质性强、气水关系复杂、经济技术条件等因素影响,继续扩大气田水平井整体开发规模受到制约。通过有利条件与不利因素的分析研究,可以促进水平井整体开发技术的推广,更多地应用于类似气藏的开发。

Technical advantages and limitations of integrated development of Sulige gas field with horizontal wells: a case study with Block Su53

Sulige gas field is a typical lithologic gas reservoir with low permeability,low pressure and low abundance,has a large number of vertical wells with low single well production and poor economic benefits.In order to improve gas field development,technical researches on development with horizontal wells have been conducted and achieved initial results.An integrated development test with horizontal wells was carried out in Block Su53,and a gas production capacity of 10.0×108m3/a has been established,making this block the only block of integrated development with horizontal wells in Sulige gas field.Expanding the scale of integrated development with horizontal wells in this gas field is restricted by factors such as deep burial depth,severe reservoir heterogeneity,complicated gas/water relationship,and economic and technical conditions.However,analysis of the pros and cons will help expand the application of the technology in the development of similar gas reservoirs.