Research And Application Of Fenugreek Gum Fracturing Fluid System

At the moment the use of guar gum is the largest amount of fracturing fluid.But with the price of guar gum rapid increases in price increase sevenfold over the past four years, making exploration costs greatly improved. This also makes seeking new low price, the stock of wealth of fracturing fluid. Coumadin gum is the active ingredient, in the nature stock very much, and the physical and chemical properties of fenugreek gum fracturing fluid in full compliance with the applicable.Laboratory experiments show that Physical and chemical properties of fenugreek gum fully content the requirements of fracturing fluid thickener,and with a1%aqueous solution of borax in accordance with the volume ratio of100:2were mixed, the mixed solution have good crosslinking properties.The developed fenugreek gum fracturing fluid system is fenugreek gum+bactericide+potassium+CF-6+pH regulator+demulsifier+GCL-150+breaker. This system still can retaining the good crosslinking at-4℃, and82seconds to form a jelly can pick hanging; the performance of resistancing temperature and shear is good at30℃to120℃; at a lower temperature, gel fracturing fluid can be started within4h broken plastic, and at higher temperatures to complete thorough broken plastic; in addition it has the characteristics of small filtration and low friction.Site application shows that the fracturing fluid system crosslinking time delay of150seconds or so, to meet the construction process of the fracturing fluid delay requirements. The flowback rate reached87.5%. Measured at15℃viscosity of the glue breaking1.50mPa-s, pH is7. it has the characteristics of selected large, high performance, low cost.