Research On Hydraulic Jet Staged Fracturing Technology For Horizontal Well

In recent years, with the deepening exploitation work of oil or gas field?low permeability oil resources difficult to mining in reservoir is growing more and more. Horizontal well and hydraulic fracturing technology is an important means of exploitation of low permeability oil. The horizontal well is a comprehensive prospect of oil recovery technique?in China’s oil and gas field get applied more and more. Because majority of horizontal wells in production capacity does not achieve the desired goals, the implementation of staged fracturing to improve the productivity of horizontal wells in low permeability oil and gas fields is needed. Hydraulic jet fracturing, which integrates perforation, fracturing and isolation, is a new stimulation technology, without mechanical packer, achieving accurately fixed-point jetting, a set of tools for multi-stage fracturing?becoming the key technology to achieve sieve fracturing of horizontal wells.This paper, based on hydraulic jet fracturing technology, takes horizontal wells in low permeability reservoir as the research object. Based on study hydraulic fracturing horizontal well technology at home and abroad?by researching the mechanism of the horizontal well hydraulic jet staged fracturing, analyzing the calculation and field test, we got the following understanding and results:(1) The mechanism of hydraulic fracturing technology in blasting perforation is improved, and the related parameters were analyzed,(2)The calculation model of the hydraulic jet staged fracturing technology related parameters was established, calculated and analyzed.(3)By developing the hydraulic fracturing hydraulic parameter calculation and optimization, the calculation model of different tubing and casing annulus and the fluid in the tubing string friction pressure loss was established.(4)By analyzing and summarizing the application of hydraulic jet fracturing of early stage, we had a thorough understanding of adaptability and limitation of the process, as to ensure the successful implementation of the technology.(5)This paper had optimized the operation parameters of the hydraulic jet staged fracturing of horizontal, summarized the construction situation, validated the optimization ABSTRACT effect.The system study of hydraulic jet separate layer fracturing technology this paper has provided a theoretical basis for hydraulic jet fracturing design, can effectively improve the construction efficiency and application of hydraulic jet separate layer fracturing effect, has a broad application prospects and the guiding significance for improving the low permeability reservoir stimulation. This paper is based on Su Li Ge Gas field Su 10 block S10-31-48 H wells,in the construction of its fracturing,using hydraulic injection fracturing technology, Using the parameters of this paper, sand quantity and displacement are optimized, and through field application, it has good results in yield increasing.