Drilling Fluid Hydraulic Parameter Optimum Design & The Development Of Software System

Drilling fluid is one of the most significant techniques to improve the penetrationrate and to quicken the exploration steps. The optimum design of hydraulic parametersis one of the key problems of drilling fluid. The aim of the optimum design of hydraulic parameters is to utilize hydraulicenergy effectively, improve the drilling rate, and reduce the cost of drilling. This paper studied the important theories in the field of drilling fluid. The authorfirst emphasized the classic rheological models such as Newtonian model, BinghamPlastic model, Power Law model, Casson model, and Herschel-Buckley model.Secondly, the author focused on the calculation of Renolds and the judgement ofdrilling fluid flow regimes. Thirdly, the author researched the problem of frictionalpressure loss, drilling bit pressure loss, the equivalent circulating density(ECD), jetdrilling, and the boundary condition of optimum water power path. Last but not theleast, the author paid attention to the analysis of surging pressure. Through the combination of the theories mentioned above and the latest researchresults, the author developed 'Drilling Fluid Hydraulic Parameter Optimum DesignSystem' using the high level computer language 'Delphi'. The software can choose rheological parameters by regression analyzing, it alsocan utilize the local data and laboratory data, can add the operator's experience into thedesign work, so it can realize the optimum design of drilling fluid hydraulicparameters. The development of this software can save a lot of manpower, material andfinancial resources for the design of drilling fluid.