Influence of additives on the friction and wear reduction of oil-based drilling fluid
| Autor: | Pixiang Lan, Andreas A. Polycarpou, Mohammad Hossein Ghamary, Larry L. Iaccino, Mohammad Humood, Xiaoying Bao |
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| Rok vydání: | 2019 |
| Předmět: |
musculoskeletal diseases
Materials science education 02 engineering and technology Drill string 0203 mechanical engineering Drilling fluid otorhinolaryngologic diseases Materials Chemistry Composite material chemistry.chemical_classification Drill Drilling Surfaces and Interfaces equipment and supplies 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films 020303 mechanical engineering & transports Hydrocarbon chemistry Mechanics of Materials Drag Lubrication 0210 nano-technology human activities Casing |
| Zdroj: | Wear. :151-160 |
| ISSN: | 0043-1648 |
| DOI: | 10.1016/j.wear.2019.01.028 |
| Popis: | In comparison to conventional vertical hole drilling, extended reach drilling wells with long horizontal section require higher driving torque due to the increased drag on the drill string, drill column, casing and other equipment. This has led to higher friction and wear on the drilling equipment. Friction and wear preventive properties of oil-based drilling fluid is therefore important to keep oil extraction economical and sustainable. The addition of small concentrations of hydrocarbon additives to drilling fluid has shown significant positive effects on these properties. In this study, improvements in friction and wear properties of drilling fluid with the use of friction reduction additives was analyzed using a four-ball experimental configuration. Experiments resulted in wear in boundary and mixed lubrication regimes due to significant metal-metal interaction. The results showed that liquid friction reduction additives with long hydrocarbon tails and high metal affinity polar heads achieved better performance than additives that contained molybdenum dialkyldithiocarbamate. Energy dispersive spectroscopy results indicated lower levels of salts and corrosive chemicals on the surface of the wear scars for the best preforming additives. |
| Databáze: | OpenAIRE |
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