Abstract: In order to quantitatively analyze and numerically simulate the fracture-height controlled fracturing technology,researches on this technology are conducted in laboratory.Slurry and diverting agent as well as their optimum combination and obstacle effects are determined.A matched equation for discribing the relationship between pressure drop in barriers and sand ratio in diverting agent is put forward.On the basis of these results,the optimum models and their solution of numerical simulation and project design of fracture-height-controlled fracturing are given.According to temperature-field models for wellbore and fracture,3D fracture propagation model and optimum design method for fracturing parameters,a fracture-height controlled fracturing design software is developed.The field application of the technology is made.A good result is obtained.

Key words: fracture technology, fracture height, experimental research, numerical simulation, optimum design, field application

摘要： 对控制裂缝高度的压裂工艺技术进行了定量分析和数值模拟.对控制裂缝高度压裂工艺进行了实验研究,确定了携带液和导向剂的最优组合及其阻挡效果,提出了遮挡层压力降与导向剂砂比的拟合关系式.在此基础上,研究了控制裂缝高度压裂数值模拟和施工设计的方法,提出了施工设计的多目标优化模型及其向单目标优化模型的转化和求解,研制了控制裂缝高度压裂优化设计软件,并给出了该技术的现场应用情况.

关键词: 压裂工艺, 裂缝高度, 实验研究, 数值模拟, 优化设计, 现场应用