The Feasibility for Potassium-Based Phosphate Brines To Serve as High-Density Solid-Free Well-Completion Fluids in High-Temperature/High-Pressure Formations
- Hu Jia (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University) | Yao-Xi Hu (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University) | Shan-Jie Zhao (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University) | Jin-Zhou Zhao (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- October 2019
- Document Type
- Journal Paper
- 2,033 - 2,046
- 2019.Society of Petroleum Engineers
- high density, formation damage, Phosphate Brines, Feasibility study, HTHP
- 9 in the last 30 days
- 115 since 2007
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Many oil and gas resources in deep-sea environments worldwide are often located in high-temperature/high-pressure (HT/HP) and low-permeability reservoirs. The reservoir-pressure coefficient usually exceeds 1.6, with formation temperature greater than 180°C. Challenges are faced for well drilling and completion in these HT/HP reservoirs. A solid-free well-completion fluid with safety density greater than 1.8 g/cm3 and excellent thermal endurance is strongly needed in the industry. Because of high cost and/or corrosion and toxicity problems, the application of available solid-free well-completion fluids such as cesium formate brines, bromine brines, and zinc brines is limited in some cases. In this paper, novel potassium-based phosphate well-completion fluids were developed. Results show that the fluid can reach the maximum density of 1.815 g/cm3 at room temperature, which makes a breakthrough on the density limit of normal potassium-based phosphate brine. The corrosion rate of N80 steel after the interaction with the target phosphate brine at a high temperature of 180°C is approximately 0.1853 mm/a, and the regained-permeability recovery of the treated sand core can reach up to 86.51%. Scanning-electron-microscope (SEM) pictures also support the corrosion-evaluation results. The phosphate brine shows favorable compatibility with the formation water. The biological toxicity-determination result reveals that it is only slightly toxic and is environmentally acceptable. In addition, phosphate brine is highly effective in inhibiting the performance of clay minerals. The cost of phosphate brine is approximately 44 to 66% less than that of conventional cesium formate, bromine brine, and zinc brine. This study suggests that the phosphate brine can serve as an alternative high-density solid-free well-completion fluid during well drilling and completion in HT/HP reservoirs.
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Al-Bagoury, M. and Steele, C. 2016. Liquid Weight Material for Drilling and Completion Fluids. Presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, Abu Dhabi, 26–28 January. SPE-178157-MS. https://doi.org/10.2118/178157-MS.
Bennion, D. B., Thomas, F. B., and Ma, T. 2000. Formation Damage Processes Reducing Productivity of Low Permeability Gas Reservoirs. Presented at the SPE Rocky Mountain Regional/Low-Permeability Reservoirs Symposium and Exhibition, Denver, 12–15 March. SPE-60325-MS. https://doi.org/10.2118/60325-MS.
Clarke-Sturman, A. J., Pedley, J. B., and Sturla, P. L. 1986. Influence of Anions on the Properties of Microbial Polysaccharides in Solution. Int. J. Biol. Macromol. 8 (6): 355–360. https://doi.org/10.1016/0141-8130(86)90055-3.
Collins, N. and Thaemlitz, C. 2014. Method for Drilling Using a Drilling and Completion Fluid Comprising a Phosphate Based Blend. US Patent No. 8,901,048.
Collins, N. and Thaemlitz, C. 2015. Phosphate Based Blend for Drilling and Completion Fluid. US Patent No. 9,090,807.
Cowan, K. M. and Hale, A. H. 1994. Drilling and Cementing With Phosphate. US Patent No. 5,311,945.
Downs, J. D. 1993. Formate Brines: Novel Drilling and Completion Fluids for Demanding Environments. Presented at the SPE International Symposium on Oilfield Chemistry, New Orleans, 2–5 March. SPE-25177-MS. https://doi.org/10.2118/25177-MS.
Downs, J. D. 2011. Exposure to Phosphate-Based Completion Brine Under HPHT Laboratory Conditions Causes Significant Gas Permeability Reduction in Sandstone Cores. Presented at the International Petroleum Technology Conference, Bangkok, 15–17 November. IPTC-14285-MS. https://doi.org/10.2523/IPTC-14285-MS.
Downs, J. D., Blaszczynski, M., Turner, J. et al. 2006. Drilling and Completing Difficult HP/HT Wells With the Aid of Cesium Formate Brines—A Performance Review. Presented at the IADC/SPE Drilling Conference, Miami, Florida, 21–23 February. SPE-99068-MS. https://doi.org/10.2118/99068-MS.
Ezzat, A. M., Gamal, M., and D’Angelo, S. 2008. High Density Brine-Based Drill-In Fluid Improved Reservoir Producibility in Gas Field Offshore Egypt. Presented at the SPE North Africa Technical Conference and Exhibition, Marrakech, Morocco, 12–14 March. SPE-112950-MS. https://doi.org/10.2118/112950-MS.
Falana, O. M., Hoxha, B. B., Veldman, R. et al. 2012. Formulations and Uses of Drilling Fluids Containing Viscosified Phosphate Brine. US Patent Application No. 13/117,304.
Falana, O. M., Ugwu, E. U., Veldman, R. et al. 2010. High Density Phosphate Brines and Methods for Making and Using Same. US Patent Application No. 12,473,805.
Fleming, N., Moland, L. G., Svanes, G. et al. 2016. Formate Drilling and Completion Fluids: Evaluation of Potential Well-Productivity Impact, Valemon. SPE Prod & Oper 31 (1): 22–28. SPE-174217-PA. https://doi.org/10.2118/174217-PA.
Goud, M. C. and Joseph, G. 2006. Drilling Fluid Additives and Engineering to Improve Formation Integrity. Presented at the SPE/IADC Indian Drilling Technology Conference and Exhibition, Mumbai, 16–18 October. SPE-104002-MS. https://doi.org/10.2118/104002-MS.
ISO 13503-3:2005, Petroleum and Natural Gas Industries—Completion Fluids and Materials—Part 3: Testing of Heavy Brines. 2005. Geneva, Switzerland: ISO.
ISO 11348-3:2007, Water Quality—Determination of the Inhibitory Effect of Water Samples on the Light Emission of Vibrio Fischeri (Luminescent Bacteria Test)—Part 3: Method Using Freeze-Dried Bacteria. 2007. Geneva, Switzerland: ISO.
Javora, P. H., Berry, S. L., Stevens, R. F. et al. 2006. A New Technical Standard for Testing of Heavy Brines. Presented at the SPE International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, 15–17 February. SPE-98398-MS. https://doi.org/10.2118/98398-MS.
Jøntvedt, E., Fjeldheim, M., Løchen, J. et al. 2018. Deployment of Cesium Formate Drill-In and Openhole Completion Fluid in the Martin Linge High Pressure, High Permeability Gas Reservoir Enhances Total’s Operational Efficiency and Radically Improves Well Performance. Presented at the SPE International Conference and Exhibition on Formation Damage Control, Lafayette, Louisiana, 7–9 February. SPE-189550-MS. https://doi.org/10.2118/189550-MS.
Sanders, D. C. 1981. High-Density Fluid Compositions. US Patent No. 4,292,183.
Sangka, N. B. and Budiman, H. 2010. New High-Density Phosphate-Based Completion Fluid: A Case History of Exploration Wells: KRE-1, BOP-1, TBR-1, and KRT-1 in Indonesia. Presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, Lima, Peru, 1–3 December. SPE-139169-MS. https://doi.org/10.2118/139169-MS.
Sangka, N. B. and Budiman, H. 2016. Application of Nitrate Based Fluid as a Completion Fluid. Presented at the Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, 7–10 November. SPE-182953-MS. https://doi.org/10.2118/182953-MS.
Sikorski, C. F. 1985. Oil Well Completion Fluid. US Patent No. 4,521,316.
Zha, W., Galindo, K., Zhou, H. et al. 2015. Thermally Stable Brine-Based Drill-In Fluids. Presented at the SPE European Formation Damage Conference and Exhibition, Budapest, Hungary, 3–5 June. SPE-174175-MS. https://doi.org/10.2118/174175-MS.
Zhou, H., Deville, J. P., and Davis, C. L. 2015a. Novel High Density Brine-Based Drill-In Fluids Significantly Increased Temperature Limit for HP/HT Applications. Presented at the SPE/IADC Drilling Conference and Exhibition, London, 17–19 March. SPE-173075-MS. https://doi.org/10.2118/173075-MS.
Zhou, H., Deville, J. P., and Davis, C. L. 2015b. Novel Thermally Stable High-Density Brine-Based Drill-In Fluids for HP/HT Applications. Presented at the SPE Middle East Oil & Gas Show and Conference, Manama, Bahrain, 8–11 March. SPE-172659-MS. https://doi.org/10.2118/172659-MS.