New single trip staged fracturing technology with packer isolation in horizontal wells

Key words:  oil well production  oil production equipment  fracturing  staged fracturing  horizontal well  packer isolation  finite element analysis

Abstract:

By analyzing the status of horizontal staged fracturing technology, a new type of single trip staged fracturing technology with packer isolation in horizontal wells was proposed, and its string structure, process principle and innovation were given. The mechanical analysis for the string was carried out by using ABAQUS finite element analysis software. The results show that the new fracturing string can achieve fracturing process design requirements. The innovations of the new technology is to complete 2-3 layers staged fracturing in single trip, design a packer with a long rubber to fix the string and reduce the occurrence of accidents, design anti sand tool part to effectively prevent sand from going into tool and causing fracturing accident. With non slip anchor tool, counter washing wells can be realized, and the whole fracturing with simple construction can be completed in one day, which can effectively save time and operating costs.