Cost Analysis of Inhibitive Drilling Fluids

Year 2021, Volume: 6 Issue: 2, 149 - 168, 28.12.2021

Emine Yalman Gabriella Federer Tolga Depci

Abstract

The main objective of this study is to provide a better understanding of inhibitive water-based drilling fluid's central cost drivers. In this study a comparison of costs is provided between two polymer drilling fluid systems used to drill an oil well located in Hungary. In order to deliver fair cost analysis, several factors were considered that contribute to the overall drilling fluids costs, such as products, preparation, equipment, waste management, transportation, personnel, cost per foot drilled, and cost per barrel of the muds. Analysis results reflects on that the change of mud systems differentiates the costs, and also the expenses heavily depend on the consumed products, personnel, and utilized equipment. Other noticeable points which have been concluded from the study are that the cost per foot of KCl/Gypsum/Polymer is € 3.6 higher than the cost per foot generated by gypsum/polymer mud. Moreover, 42% of the total mud costs is given by the first drilled section of the well, while the second section constitutes 58%. Consequently, the overall cost of the mud used in the well was estimated as € 76,797.25 considering all the factors and well diameter. Finally, this research presents a statistical analysis that can be used as a reference for the subsequent perspective wells intended to be drilled at the same field.

Keywords

Drilling fluid, cost, data, inhibitive, drilling.

References

• [1] OPEC, 2020. World oil outlook 2045, ISBN 978-3-9504890-0-2, Vienna, Austria file:///C:/Users/Senator/Downloads/WOO_2020.pdf
• [2] Nascimento, A., Elmgerbi, A., Roohi, A., Prohaska, M., Thonhauser, G., Gonçalves, J. L., Mathias, M. H. “Reverse engineering: a new well monitoring and analysis methodology approaching playing-back drill-rate tests in real-time for drilling optimization”, Journal of Energy Resources Technology 2017: 139; 1-5.
• [3] Hossain, M. E. “Drilling costs estimation for hydrocarbon wells”, Journal of Sustainable Energy Engineering 2015: 3; 3-32.
• [4] Bahari, A., Seyed, A. B. “Drilling cost optimization in a hydrocarbon field by combination of comparative and mathematical methods”, Petroleum Science 2009: 6; 451-463.
• [5] Lummus, J. L. “Drilling optimization”, Journal of Petroleum Technology 1970: 22; 1-379.
• [6] Azar, J. J., Samuel, G. R. “Drilling engineering”, PennWell boks, 2007.
• [7] Bourgoyne Jr, A. T., Millheim, K. K., Chenevert, M. E., Young Jr, F. S. “Applied drilling engineering”, vol. 2 of Society of Petroleum Engineers Textbook Series, Society of Petroleum Engineers, 1991.
• [8] Caenn, R., Darley, H. C., Gray, G. R. “Composition and properties of drilling and completion fluids”, Gulf professional publishing, 2011.
• [9] Rabia, H., “Well engineering & construction”, Entrac Consulting, 2001.
• [10] Skalle, P. “Drilling fluid engineering”, BookBoon, 2011.
• [11] Khodja, M., Khodja-Saber, M., Canselier, J. P., Cohaut, N., Bergaya, F. “Drilling fluid technology: performances and environmental considerations”, Products and services; from R&D to final solutions, 2010.
• [12] Lake, L. W. “Petroleum engineering handbook”, Volume II. Chapter 10-Drilling Problems and Solutions, Soxciety of Petroleum Enginners, 2006.
• [13] Chen, G., Chenevert, M. E., Sharma, M. M., Yu, M. “A study of wellbore stability in shales including poroelastic, chemical, and thermal effects”, Journal of Petroleum Science and Engineering, 2003: 38; 167-176.
• [14] Al-Arfaj, M. K., Amanullah, M. and Mohammed, A. O. “An enhanced experimental method to assess the shale inhibition durability of inhibitive water-based drilling fluids”, In SPE/IADC Middle East Drilling Technology Conference and Exhibition, OnePetro, 2018.
• [15] Al-Arfaj, M. K., Hossain, E., Sultan, A., Amanullah, M., Al-Fuwaires, O., Al-Subai, T. “Preliminary test results of inhibitive water-based muds used to mitigate unconventional shale drilling problems”, International Petroleum Technology Conference, 2014.
• [16] Stephens, M., He, W., Freeman, M., Sartor, G. “Drilling fluids: tackling drilling, production, wellbore stability, and formation evaluation issues in unconventional resource development”, Unconventional Resources Technology Conference, Society of Exploration Geophysicists, American Association of Petroleum Geologists, Society of Petroleum Engineers, 2013.
• [17] Okoro, E. E., Dosunmu, A., Iyuke, S. E. “Data on Cost analysis of drilling mud displacement during drilling operation”, Data in brief, 2018: 19; 535-541.
• [18] Dahl, B., Omland, T. H., Saasen, A. “Optimised solids control in arctic environments” SPE Russian Oil and Gas Exploration and Production Technical Conference and Exhibition, Society of Petroleum Engineers, 2012.
• [19] Irawan, S., Kinif, B. I., Bayuaji, R. “Maximizing drilling performance through enhanced solid control system”, IOP Conference Series: Materials Science and Engineering, IOP Publishing, 2017.