Investigation of Friction Pressure for Hydraulic Fracturing Fluids
Engineering Honours Degree, 2006
University of Adelaide
Hydraulic fracture stimulation technique has become one of the best successful techniques for enhancing the reservoir production performance. The execution of hydraulic fracturing jobs involves pumping fracturing fluid at high rate through several thousands feet of tubing length. This results in high pressure losses through tubing as well as the formation. Frictional pressure loss from fracturing fluids is often identified to be the main limiting factor of hydraulic fracturing jobs as it is difficult to predict. This obviously affects the design of pumping pressure, bottom-hole treating pressure and maximum wellhead pressure during the execution of hydraulic fracturing jobs. Many correlations based on laboratory-generated data are available to predict friction coefficient, but the result of such test has to be scaled up to predict the real time solutions. Hence often correlations using real time data are developed to use in a specific field cases. However these correlations inherit limitations and cannot be applied in other fields. This work attempts to identify the appropriate correlation through comprehensive literature survey. The proposed correlation models are then used to investigate how different parameters related to fracturing fluid and tubing sizes affects the frictional pressure drop. Understanding of parameters affecting frictional pressure drop would allow ways to reduce it (obtain an optimum frictional pressure drop) and able to accurately predict the variation in frictional pressure drop with the changing of parameters.