Synthesis and characterisation of a multifunctional oil-based drilling fluid additive |
| |
Authors: | Wu-Juan Sun Guo-Qing Tian Hang-Juan Huang Guo-Min Lu Cong-Yu Ke Jun-Feng Hui Xun-Li Zhang |
| |
Institution: | 1.College of Chemistry and Chemical Engineering,Xi’an Shiyou University,Xi’an,People’s Republic of China;2.The 6th Gas Production Plant,PetroChina Changqing Oilfield Company,Xi’an,People’s Republic of China;3.School of Chemical Engineering,Northwest University,Xi’an,People’s Republic of China |
| |
Abstract: | An oil-based drilling fluid additive H-DEA (or humic acid-cocamide diethanolamine) was synthesised using humic acid and cocamide diethanolamine as raw materials. The rheological behaviors of H-DEA showed that the synthesised product has the good properties in both decreasing the filtrate loss and improving rheology property of oil-based drilling fluids compared with other commercially available additives. Under the optimal additive amount of 3%, both API filtrate loss and yield point changed remarkably from 5.40 to 0.41 mL and 9.0 to 25.6 Pa, respectively. Furthermore, differential scanning calorimetry (DSC) showed that H-DEA has good thermal stability in a wide temperature range up to 170 °C. Infrared spectroscopy (IR) and rheological analysis revealed that the possible mechanism of the multifunctional effects may be attributed to the existing of high density of strong polar groups, hydrogen bonds, electrostatic forces, and intermolecular association on H-DEA molecular structure. The results of the study showed that the synthesised H-DEA can be potentially used as a multifunctional oil-based drilling fluid additive in oil-drilling excavation. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|