CAJ | 학술논문

为提高苏里格等多薄层储层改造纵向上有效动用程度差的技术难题.利用前置投球选择性分压方法及模型,进行技术改进与图版研究.结果揭示苏里格气层投球分压裂缝延伸规律,形成投球分压的应力判别新图版,建立提高压开程度的射孔优选方案,得出快速科学分析投球效果的现场判别图版与优化方案.综合应用提高了新型投球分压技术的适应性和针对性,现场应用36井次后,施工周期缩短10~30 d,试油及改造成本仅为原来的20%~50%,为多薄层油气藏储层纵向上的高效动用提供新技术手段.
위제고소리격등다박층저층개조종향상유효동용정도차적기술난제.이용전치투구선택성분압방법급모형,진행기술개진여도판연구.결과게시소리격기층투구분압렬봉연신규률,형성투구분압적응력판별신도판,건립제고압개정도적사공우선방안,득출쾌속과학분석투구효과적현장판별도판여우화방안.종합응용제고료신형투구분압기술적괄응성화침대성,현장응용36정차후,시공주기축단10~30 d,시유급개조성본부위원래적20%~50%,위다박층유기장저층종향상적고효동용제공신기술수단.
Based on method and theory of multi-layering fracturing with pad stage , taken Sulige gasfield tight reservoir as an example, formation stress profile and stress shielding was calculated, A stress charts was put forward in order to improve the drawbacks of conventional multi-layering fracturing with seal balls. Using ball sealing mechanics analysis, Perforation optimization was studied which can improved the effect of multi-layering fracturing, the establishment of the rapid scientific field discriminanl chart also was obtained. The method to improve the comprehensive application of new multi-layering fracturing technology adaptability and pertinence, after 36 wells field application it become more significant effect. The testing period is shortened 10~30 days, oil testing and treatment cost is only the original 20%~50%, it has become the important optional technology for the hydraulic fracturing of multiple payzones with thin thickness.