Effects of walnut shells on the rheological properties of water-based drilling fluids

In this research, three different water-based drilling fluids were prepared according to American Petroleum Institute (API) standards, and effects of walnut shells on the rheological properties of the samples were studied. The walnut shells of 2-, 4-, and 6-mm samples and their equal weight mixtures of 2-4 mm and 4 6 mm were added to the drilling fluid samples in different concentrations. The aim of this study is to determine the optimum walnut shell size, concentration and polymer concentration to minimize the fluid loss during drilling operations. It was observed that polymer (XT) has the optimum effects on the water-based drilling fluid. The optimum concentration of polymer (XT) with the 6-mm walnut shell is determined as 0.4 g/350 ml.
Energy Sources, Part A: Recovery, Utilization and Environmental Effects


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Oil portion of Tenebrio molitor (yellow mealworm) and Acheta domesticus (house cricket) were examined and it was investigated how the physicochemical properties of the oils changed with High Hydrostatic Pressure Assisted Extraction (HHP-E) and conventional solvent extraction (CE) with hexane. The effect of HHP-E at 500 MPa and 30 and 40 degrees C for 15 min on the properties of oils was compared with the CE. Following the extraction of oil, fatty acid composition, peroxide value, crystallization and melting...
Citation Formats
A. G. Iscan and M. V. Kök, “Effects of walnut shells on the rheological properties of water-based drilling fluids,” Energy Sources, Part A: Recovery, Utilization and Environmental Effects, pp. 1061–1068, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33084.