Study On The Fluid Formulation Of Hydraulic Fracturing In Water Well

China has a low share of water resources per capita,and groundwater resources are of great value to China's development.The exploitation of groundwater by means of water wells is also increasing year by year.Because of the complexity of groundwater migration and burial,many wells are scrapped because of the small amount of water,and the new wells may also have a small amount of water,resulting in a waste of economy.Hydraulic fracturing technology helps to improve these problems.Hydraulic fracturing technology originates from oil and gas fields.It is a technology to increase production of oil and gas wells by forming a highly conductive fracture network around wellbore.The development of fracturing technology has formed complex fracturing technology,huge and professional fracturing equipment.The fracturing equipment and fracturing fluid used in oil and gas fields are more complex,and the higher construction cost restricts the application of fracturing technology in common wells and geothermal wells.Hydraulic fracturing technology is a relatively new technology in water well industry.Hydraulic fracturing of water wells causes fracturing of rocks in wells.The purpose is to expand the existing cracks in the bedrock and to extend the existing cracks to the farther strata to produce new cracks,thus expanding the aquifer network for water supply to the wells,and the flow can flow more quickly and smoothly into the wells.Hydraulic fracturing is a kind of water well development technology.And it is a more economical way to increase the water output of wells.Therefore,it is of great value to study low cost and environmentally friendly hydraulic fracturing fluid for ordinary wells.Based on the research project of increasing water in bedrock water wells in CHEGS,this paper studied on the hydraulic fracturing fluid used in water wells.The goal is to minimize damage to aquifer.Materials used should be environmentally friendly,easy to draw and cost saving.Based on previous studies on plant gel,the crosslinking and gel breaking properties of gel were explored.The suitable plant gel was selected for indoor experiment about proportioning test and related performancetest.To explore a more suitable reagent ratio.For shallow carbonate well,this papaer explored the sustained release acid fracturing fluid.The purpose is to extend the effective distance of acid solution improving permeability and increasing water yield.By selecting suitable reagents,correlation ratio test and performance test were carried out,and the ratio of slow-release acid with suitable performance and good performance was explored.