Research And Application Of Fracturing Technology Of Large Deviated Well In Banshen Block

The fracturing technique of sewing network is a new fracturing technique developed by north American shale gas fracturing in recent years.The technique can be used to crack open multiple fractures and form a seaming system in the near well and the seam length,thus increasing the drainage area and improving the effect.The deep part of the south deep block which in the risk cooperation project of Great Wall drilling and Dagang oilfield is middle and low porosity,ultra-low permeability reservoir.The initial production is not high and the decline is fast,and the oil well stimulation and decreasing decrease need to be realized through reservoir modification.In this paper,the feasibility of fracturing reconstruction of reservoir fractures in the block is analyzed by studying the rock mineral,mechanical parameters,natural fracture and ground stress of banshen 5-1 reservoir.In this paper,a series of fracturing fluid systems suitable for banshen 5-1 were developed by comparing the performance,rheological properties,performance and sand carrying performance of several different fracturing fluid systems.This paper studies the blocks fracturing process,the stratification of the blocks with high Angle Wells is the main type of well completion,contrasts analysis of the multiple layered process,optimizing the suitable technology,optimize the tubing,tools,packer and other supporting equipment,guarantee the effect of fracturing operation.In the process of construction,the process of variable displacement,multi-particle size,slug type and sand is adopted to guarantee the effect of reservoir reconstruction.