复合射孔技术研究与应用

复会射孔技术是将射孔完井和高能气体压裂两项技术合二为一,利用炸药和火药的燃速差来实现先射乱后压裂,一次施工完成射孔压裂两个工序。介绍了宴会射孔技术的完井机理、复合射孔器结构、施工设计、施-工艺及在大庆油田的应用。通过对应用效果分析认为,该技术是一项实用、高效、增产的新技术,它简化了现有施工工序,节约了资金,提高了经济效益,具有广阔的推广应用前景。在复合射孔后的井直接进行水力压裂可降低破裂压力,使水力压裂效果更好。

DEVELOPMENT AND APPLICATION OF COMBINED PERFORATION TECHNOLOGY

Combined perforation technology is a technique which comblnes perforation completion and high grade energy gas fracturing in one unit. Both perforation and fracturing can be finished in one operation by use of flaming speed difference of explosives to perforate casing and fracture formations. The paper describes the principle of combined perforation,the structure of the tool, the operation design and its appllcation in Daqing Oil Field. The fleld results show that the technology is applicable and highly efficient and can be used to im prove production. It simplifies existing operation procedures, and the cost also be decreased. It has good prospects for future expansion applications. After running above mentioned oper ation in a well, hydra-fracturing can be carried out. Slnce the formation breakdown pres sure has been decreased, the hydra-fracturing effect could be better.