| Issue |
E3S Web Conf.
Volume 560, 2024
The 10th International Conference on Energy Materials and Environment Engineering (ICEMEE 2024)
|
|
|---|---|---|
| Article Number | 01016 | |
| Number of page(s) | 7 | |
| Section | Mineral Resources Utilization and Thermodynamic Engineering | |
| DOI | https://doi.org/10.1051/e3sconf/202456001016 | |
| Published online | 05 August 2024 | |
Research and application of low oil-water ratio organoclay-free oil-based drilling fluid technology
1 CNPC Engeering Technology R&D Company Limited, Beijing 102206, China
2 DRILLING FLUID COMPANY OF XDEC, Karamay 834099, China
* Corresponding author: 365441231@qq.com
This paper introduces the formation and application of a low oil-water ratio organoclay-free oil-based drilling fluid. Shale oil and gas are important alternative energy sources. Due to the extremely complex geological conditions, oil-based drilling fluid technology is commonly used to reduce complexity. Although some achievements have been made, there are still problems such as unstable wellbore, difficult rheological control, and high cost. A stable and low-viscosity water-in-oil emulsion system was successfully prepared by using optimized fatty acid imidazolines emulsifier and alkyl alcohol ether wetting agent, which enabled the oil-based drilling fluid to have a larger solid and water phase capacity. On this basis, a special poly-fatty acid amide rheological modifier was used to assist in the regulation of rheological parameters, resulting in a low-viscosity and high-shear structure of the oil-based drilling fluid. This effectively ensured the efficiency of cuttings carrying while reducing the adverse effects of viscosity on Equivalent Circulating Density(ECD). The low oil-water ratio oil-based drilling fluid technology has been applied in a shale gas drilling platform in southern Sichuan, China, which greatly reduces the cost of oil-based drilling fluid while ensuring drilling efficiency.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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