Experimental study on the effects of cement contamination in a water based mud

Eric Broni-Bediako, Richard Amorin

Abstract view|594|times       PDF download|158|times

Abstract


 

Drilling mud is used to ensure save and cost-effective drilling operations. In every phase of the drilling operation, contaminants are encountered which directly affect the properties of the drilling mud. The severity of drilling mud contamination depends on the type of drilling mud used, the type of contaminant and the degree of contamination. In most drilling operations, cement contamination occurs one or more times when casing strings are cemented and the plugs are drilled out. Drilling mud is discarded when cement contamination is too high such that it is practically unreasonable to treat it. It is therefore important to monitor the mud's properties against contamination to ensure the basic functions of the mud. To perform effective monitoring of a drilling mud requires proper knowledge of the drilling mud chemistry, properties, and contaminants. This will help oil operators to apply the right control measures and treatment methods during drilling operations. This paper presents an experimental study on the effect of various concentrations of cement contamination on some physical properties of water based mud (WBM). Four mud samples were prepared of which three of them were contaminated with 10 g, 20 g and 30 g of class G cement. Rheological properties at temperatures of 25 °C, 40 °C and 60 °C as well as the pH, fluid loss and density of the mud were determined. The findings showed that the yield point and gel strength at all test temperatures increased as the concentration level of cement increased. However, the plastic viscosity decreased slightly with cement concentration of 10 g and 20 g and further increased with 30 g of cement contamination at 40 °C and 60 °C. The fluid loss, density as well as the pH of the WBM increased gradually as the concentration of cement increased. It is recommended that the effect of cement contamination in WBM at temperatures higher than 60 °C should be investigated.

Cited as: Broni-Bediako, E., Amorin, R. Experimental study on the effects of cement contamination in a water based mud. Advances in Geo-Energy Research, 2019, 3(3): 314-319, doi: 10.26804/ager.2019.03.09


Keywords


Cement, contaminant, fluid loss, gel strength, rheology, plastic viscosity, yeild point

Full Text:

PDF

References


Abduo, M.I., Dahab, A.S., Abuseda, H., et al. Comparative study of using water-based mud containing multiwall carbon nanotubes versus oil-based mud in HPHT fields. Egypt. J. Petrol. 2016, 25: 459-464.

Amoco. Drilling fluid manual. Amoco Production Company, 1994.

Amorin, R. Drilling fluids. Unpublished BSc Lecture Notes, Tarkwa, University of Mines and Technology, 2016.

Annis, M.R., Smith, M.V. Drilling Fluid Technology. USA, Exxon Company, 1996.

Awele, N. Investigation of additives on drilling mud performance with Tonder geothermal drilling as a case study. Esbjerg, Aalborg University, 2014.

Bahand, S., Ghabezloo, S., Duc, M., et al. Effect of the hydration temperature on the microstructure of Class G cement: C-S-H composition and density. Cem. Concr. Res. 2017, 95(3): 270-281.

Dankwa, O.K., Appau, O.P., Broni-Bediako, E. Evaluating the effects of monovalent and divalent salts on the rheological properties of water based mud. Open Petrol. Eng. J. 2018, 11(1): 98-106.

Darley, H.C.H., Gray, G.R. Composition and Properties of Drilling and Completion Fluids. Houston, USA, Gulf Professional Publisher, 1988.

Dhiman, A.S. Rheological properties and corrosion characteristics of drilling mud additives. Nova Scotia, Dalhousie University, 2012.

Henaut, I., Pasquier, D., Rovinetti, S., et al. HP-HT drilling mud based on environmently friendly fluorinated chemicals. Oil Gas Sci. Technol. 2015, 70(6): 917-930.

Joel, O.F., Ndubuisi, E.C., Ikeh, L. Effect of cement contamination on come properties of drilling mud. Paper SPE 163023 Presented at Nigerian Annual International Conference and Exhibition, Abuja, Nigeria, 6-8 August, 2012.

Khodja, M., Khodja-Saber, M., Canselier, J.P., et al. Drilling fluid technology: Performances and environmental considerations. Intechopen Access Publisher, 2010.

Makinde, F.A., Adejumo, A.D., Ako, C.T., et al. Modelling the effects of temperature and ageing time on the rheological properties of drilling fluids. Pet. Coal 2011, 53(3): 167-182.

Mitchell, R.F., Lake, L.W. Petroleum Engineering Handbook: Drilling Engineering. USA, SPE, 2006.

Mohamadian, N., Ghorbani, H., Wood, D. Rheological and filtration characteristics of drilling fluids enhanced by nanoparticles with selected additives: An experimental study. Adv. Geo-Energy Res. 2018, 2(3): 228-236.

Nash, V.E. Role of exchangeable cations in viscosity of clay suspensions. Clays Clay Miner. 2013, 7(1): 328-342.

Nasser, J., Jesil, A., Mohiuddin, T., et al. Experimental investigation of drilling fluid performance as nanoparticles. World J. Nano Sci. Eng. 2013, 3: 57-61.

Ogbeide, P.O., Igbinere, S.A. The effect of additives on rheological properties of drilling fluid in highly deviated wells. Futo J. Ser. 2016, 2(2): 68-82.

Shah, S.N., Shanker, N.H., Ogugbue, C.C. Future challenges of drilling fluids and their rheological measurements. Paper AADE-10-DF-HO-41 Presented at 2010 AADE Fluids Conference and Exhibition, Hilton Houston North, Houston, Texas, 6-7 April, 2010.

Yunita, P., Irawan, S., Kania, D. Optimization of water-based drilling fluid using non-ionic and anionic surfactant additives. Procedia Eng. 2016, 148: 1184-1190.


Refbacks

  • There are currently no refbacks.


Copyright (c) 2019 The Author(s)

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Copyright ©2018. All Rights Reserved