CAJ | 학술논문

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—1H井完成了3段分段压裂施工，压后分别获天然气无阻流量16．1×10^4m^3／d和4．3×10^4m^3／d，取得较好的增产效果。
신장상사계묘조기장위전형적저공、저삼고압치밀기장，수평정분단압렬기술시해류저층고효개발적유효수단。침대지층압력고、분단수단유한등난점，장수력분사압렬여다급활투분층압렬공구상결합，형성료고압저삼기장수평정수력분사분단압렬공예기술。해기술구유불동관주련속분단개조、불대봉격기、관주용역기출등특점。재xs311H화XS21—1H정완성료3단분단압렬시공，압후분별획천연기무조류량16．1×10^4m^3／d화4．3×10^4m^3／d，취득교호적증산효과。
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.