摘要
水平井分段压裂是开发低渗难动用储量的重要技术手段,该技术在储集层横向分布稳定,纵向有一定厚度且连续性好的低渗气藏中应用已较为成熟,但在强非均质性气藏中的应用仍有待研究。为此,针对苏53区块低渗致密、低丰度、横向砂体不连续和纵向砂泥岩薄互层显著等特点,通过气藏数值模拟和三维裂缝模拟,对水平井段长度、水平井分压级数、裂缝参数和关键施工参数等进行了优化研究,得到了苏53区块水平井分段压裂优化参数组合。该研究对提高苏里格气田水平井开发效果具有指导意义。
The horizontal well staged fracturing is an important technological means for developing low permeable and hard -to -recover reserves.The technology has been used well in low permeable gas -reservoirs with steady lateral distri-bution and certain thickness and good continuity in vertical direction.However,it remains to be studied in strong heteroge-neous gas -reservoirs.In view of characteristics of Su 53 block,such as low permeability and tight,low abundance,lateral sandbody discontinuity,obvious thin sand -shale interbeds in vertical direction,and so on,it was optimally studied on hori-zontal section length,number of fractures and key parameters of fracturing.The study results are significant for improving the level of Sulige Gasfield development.
出处
《复杂油气藏》
2015年第2期79-83,共5页
Complex Hydrocarbon Reservoirs
基金
国家科技重大专项"低渗
特低渗透油气田经济开发关键技术(二期)"(编号:2011ZX05013)
关键词
苏53区块
水平井
分段压裂
气藏模拟
裂缝模拟
参数优化
Su53 block
horizontal well
staged fracturing
gas reservoir simulation
fracture simulation
parameter optimization
