![]() It can serve as a guide for the development of safer and more-effective RJD practices. The present work provides a viable and detailed hydraulics-calculation model and design method for RJD, and may be used for both short-term troubleshooting and long-term operation planning. A flow rate of 57.24 L/min was optimal for the case well. Pressure loss calculation is done with reference to flow regime of the fluid. Since the pressure drop is proportional to flow 2 and the flow has decreased by a factor of 3. To maximize the rate of penetration (ROP), the largest flow rate within that interval was selected as the optimum flow rate. Accurate determination of hydraulic parameters such as pressure losses. Hydraulic & Pneumatics Fluids Design and Engineering Data. The optimum flow-rate range was determined by the minimum lateral-extending force, minimum rock-breaking jet-bit-pressure drop, and minimum equipment-safety working pressure. The results show that the pump flow rate should be optimized for different well configurations. ![]() According to the operation profile, the calculated pump pressure will help the field engineer to estimate the working status of downhole tools. The pressure loss of the high-pressure hose and jet bit represents a large proportion of the RJD-system pressure loss (41.2 and 55.8%, respectively). The hydraulics calculations corresponded well with the field data. ![]() Finally, a field case study with six radial laterals in four different layers was conducted by use of our models and optimization method. In this case the friction factor/is obtained from Figure 7.1 or its equivalent. A set of pressure-loss models and a lateral-extending-force model of an RJD system were then established, and a method to optimize the hydraulics of RJD was proposed. In summary, one can calculate pressure drop for Newtonian fluid flow systems in the following manner: 1)Calculate Re from Eq. In this study, the pressure loss, ejector force, and extending resistance of an RJD system were measured at different flow rates at a full-scale RJD experimental facility. However, detailed hydraulics calculations and design methods have not yet been published. Hydraulics design is essential for successful field-drilling operations. Radial-jet-drilling (RJD) technology, which uses a high-pressure water jet, aims to drill tens of laterals from a vertical wellbore. Multilateral-horizontal-well drilling is an efficient approach for stimulating shallow, low-permeability, marginal, and coalbed-methane (CBM) reservoirs.
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