高压低渗气藏水平井水力喷射分段压裂工艺技术

新场上沙溪庙组气藏为典型的低孔、低渗高压致密气藏，水平井分段压裂技术是该类储层高效开发的有效手段。针对地层压力高、分段手段有限等难点，将水力喷射压裂与多级滑套分层压裂工具相结合，形成了高压低渗气藏水平井水力喷射分段压裂工艺技术。该技术具有不动管柱连续分段改造、不带封隔器、管柱容易起出等特点。在xs311H和XS21—1...

Hydrojet staged fracturing technology for horizontal wells in tight gas reservoir with high -pressure and low -permeability

Shaximiao gasfield is a typical tight gas reservoir having low porosity and high permeability, and the staged fracturing technology for horizontal well is an effective mean for such reservoir development. Aiming at the difficulties on the high formation pressure and the limited stage separating means, etc. , the hydraulic fracturing is combined with the multi -stage sleeve stratified fracturing tool ,to form a hydrojet staged fracturing technology for horizontal wells in tight gas reservoir with high pressure and low permeability. The technology has charactreristics of continuous staged stimulation with the fixed string,without packer,and easy lifting string. The technology was applied in XS311H and XS21 -1H well. After fracturing,gas production reached 16.1×10^4m^3/d and 4.3 ×10^4m^3/d,respectively.