In offshore deepwater drilling, because of the low temperature aroud seafloor, the conventional synthetic-based drilling fluid becomes very thick, resulting in severe loss of drilling fluid during drilling through the deepwater formations with a narrow safe-density window. Therefore, it is important to improve the rheological properties of drilling fluid at deepwater drilling conditions. In this work, by investigating the effects of the key components including the base oil, emulsifier, wetting agent and rheology modifier on the rheological properties of synthetic-based drilling fluid at 4°C to 65°C, the optimal additives were selected, and a synthetic-based drilling fluid with flat-rheology characteristics was developed. It was found that the gas-to-liquid oil had low viscosity at a low temperature, and was suitable for preparing deepwater drilling fluids. The evaluation experiments show that at 4°C to 65°C, the drilling fluid could maintain stable yield point, 10-min Gel and 6 r/min reading value at a density of 0.9-1.5 g/cm3 even after high temperature aging, while the rheological properties of the conventional synthetic-based drilling fluid were significantly influence by the low temperature. Moreover, it showed excellent performance in filtration reduction and shale inhibition, and could maintain good properties even being contaminated by seawater. Therefore, its stable rheological properties at the deepwater drilling temperature range can effectively control the equivalent circulating density, thus reducing the risk of drilling fluid loss during deepwater drilling.
Published in | International Journal of Energy and Power Engineering (Volume 7, Issue 5) |
DOI | 10.11648/j.ijepe.20180705.11 |
Page(s) | 54-58 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2018. Published by Science Publishing Group |
Flat-Rheology, Synthetic-Based Drilling Fluid, Deepwater Drilling, Low Temperature
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APA Style
Tie Geng, Zhengsong Qiu, Hailong Miao, Wei Zhang, Ke Lei. (2018). Performance Evaluation of Synthetic-Based Drilling Fluid with Flat Rheology. International Journal of Energy and Power Engineering, 7(5), 54-58. https://doi.org/10.11648/j.ijepe.20180705.11
ACS Style
Tie Geng; Zhengsong Qiu; Hailong Miao; Wei Zhang; Ke Lei. Performance Evaluation of Synthetic-Based Drilling Fluid with Flat Rheology. Int. J. Energy Power Eng. 2018, 7(5), 54-58. doi: 10.11648/j.ijepe.20180705.11
AMA Style
Tie Geng, Zhengsong Qiu, Hailong Miao, Wei Zhang, Ke Lei. Performance Evaluation of Synthetic-Based Drilling Fluid with Flat Rheology. Int J Energy Power Eng. 2018;7(5):54-58. doi: 10.11648/j.ijepe.20180705.11
@article{10.11648/j.ijepe.20180705.11, author = {Tie Geng and Zhengsong Qiu and Hailong Miao and Wei Zhang and Ke Lei}, title = {Performance Evaluation of Synthetic-Based Drilling Fluid with Flat Rheology}, journal = {International Journal of Energy and Power Engineering}, volume = {7}, number = {5}, pages = {54-58}, doi = {10.11648/j.ijepe.20180705.11}, url = {https://doi.org/10.11648/j.ijepe.20180705.11}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepe.20180705.11}, abstract = {In offshore deepwater drilling, because of the low temperature aroud seafloor, the conventional synthetic-based drilling fluid becomes very thick, resulting in severe loss of drilling fluid during drilling through the deepwater formations with a narrow safe-density window. Therefore, it is important to improve the rheological properties of drilling fluid at deepwater drilling conditions. In this work, by investigating the effects of the key components including the base oil, emulsifier, wetting agent and rheology modifier on the rheological properties of synthetic-based drilling fluid at 4°C to 65°C, the optimal additives were selected, and a synthetic-based drilling fluid with flat-rheology characteristics was developed. It was found that the gas-to-liquid oil had low viscosity at a low temperature, and was suitable for preparing deepwater drilling fluids. The evaluation experiments show that at 4°C to 65°C, the drilling fluid could maintain stable yield point, 10-min Gel and 6 r/min reading value at a density of 0.9-1.5 g/cm3 even after high temperature aging, while the rheological properties of the conventional synthetic-based drilling fluid were significantly influence by the low temperature. Moreover, it showed excellent performance in filtration reduction and shale inhibition, and could maintain good properties even being contaminated by seawater. Therefore, its stable rheological properties at the deepwater drilling temperature range can effectively control the equivalent circulating density, thus reducing the risk of drilling fluid loss during deepwater drilling.}, year = {2018} }
TY - JOUR T1 - Performance Evaluation of Synthetic-Based Drilling Fluid with Flat Rheology AU - Tie Geng AU - Zhengsong Qiu AU - Hailong Miao AU - Wei Zhang AU - Ke Lei Y1 - 2018/11/19 PY - 2018 N1 - https://doi.org/10.11648/j.ijepe.20180705.11 DO - 10.11648/j.ijepe.20180705.11 T2 - International Journal of Energy and Power Engineering JF - International Journal of Energy and Power Engineering JO - International Journal of Energy and Power Engineering SP - 54 EP - 58 PB - Science Publishing Group SN - 2326-960X UR - https://doi.org/10.11648/j.ijepe.20180705.11 AB - In offshore deepwater drilling, because of the low temperature aroud seafloor, the conventional synthetic-based drilling fluid becomes very thick, resulting in severe loss of drilling fluid during drilling through the deepwater formations with a narrow safe-density window. Therefore, it is important to improve the rheological properties of drilling fluid at deepwater drilling conditions. In this work, by investigating the effects of the key components including the base oil, emulsifier, wetting agent and rheology modifier on the rheological properties of synthetic-based drilling fluid at 4°C to 65°C, the optimal additives were selected, and a synthetic-based drilling fluid with flat-rheology characteristics was developed. It was found that the gas-to-liquid oil had low viscosity at a low temperature, and was suitable for preparing deepwater drilling fluids. The evaluation experiments show that at 4°C to 65°C, the drilling fluid could maintain stable yield point, 10-min Gel and 6 r/min reading value at a density of 0.9-1.5 g/cm3 even after high temperature aging, while the rheological properties of the conventional synthetic-based drilling fluid were significantly influence by the low temperature. Moreover, it showed excellent performance in filtration reduction and shale inhibition, and could maintain good properties even being contaminated by seawater. Therefore, its stable rheological properties at the deepwater drilling temperature range can effectively control the equivalent circulating density, thus reducing the risk of drilling fluid loss during deepwater drilling. VL - 7 IS - 5 ER -