斜井压裂大型真三轴模拟试验研究  

LARGE-SCALE THREEDIMENSIONAL SIMULATION TEST FOR DIRECTIONAL PERFORATION AND FRACTUREINGT IN DEFLECTED WELL

作　　者：贾长贵[1] 李明志[2] 邓金根[1] 田常青[2] 常丽芳[2] 

机构地区：[1]中国石油大学(北京),北京102249 [2]中国石油化工股份有限公司中原油田分公司

出　　处：《西南石油大学学报（自然科学版）》2007年第2期135-137,共3页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家"十五"重点科技攻关项目"中国大中型油(气)田勘探开发关键技术研究"(2003BA613A-07)的部分成果

摘　　要：通过大型真三轴模拟试验,研究了井斜角,井眼方位角、射孔方式对斜井压裂裂缝起裂压力、起裂位置及裂缝延伸规律的影响,得到了不同参数条件下裂缝起裂和延伸的直观认识。探索通过定向射孔形成一条平整大裂缝的途径,从而降低水力压裂地层的破裂压力,改善裂缝形态,提高压裂成功率,为优化斜井地层射孔方案及水力压裂设计提供依据。实验结果对于提高斜井水力压裂技术水平,改善压裂增产效果具有重要作用。Through large-scale three-dimensional simulation test, the influence of hole deviation angle, azimuth angle and perforation orientation on opening pressure, position, and extention rule of fracture created in fractured deflected hole is researched. Visual description on opening and extention is achieved under different parameter condition. A way is sought to make a big level fracture by means of directional perforation to reduce the breakdown pressure of formation, improve the shape of fracture and enhance the success rate for deflected hole fracturing treatment. According to it, perforation project and hydraulic fracturing design can be objectively optimized. The experimental conclusion is important to improve fracturing stimulation treatment technology and postfracturing response for deflected hole.

关 键 词：射孔 斜井 压裂 裂缝 试验 

分 类 号：TE355[石油与天然气工程—油气田开发工程]