EFFECTS OF DRILLING MUD CONTAMINATION ON THE PROPERTIES OF WAXY CRUDE OIL

  • Azuraien Japper-Jaafar Centre for Advanced and Professional Education (CAPE), Universiti Teknologi PETRONAS
  • Petrus Tri Bhaskoro Mechanical Engineering Department, Universiti Teknologi PETRONAS
  • Muhammad Hassanei Heykal Azmi Mechanical Engineering Department, Universiti Teknologi PETRONAS
  • Mior Zaiga Sariman GTS/PD&T, PETRONAS Sdn. Bhd., Kuala Lumpur, Malaysia
  • Rohaizad Norpiah GTS/PD&T, PETRONAS Sdn. Bhd., Kuala Lumpur, Malaysia
  • Muhamad Hazri Shahpin Laboratory Facility and Support Unit (LFSU, Universiti Teknologi PETRONAS

Abstract

Contamination of crude oil with drilling mud normally occurs during drilling process. The contamination may change the properties of crude oil leading to inaccurate assessment of the first extracted crude oil. Incorrect prediction of crude oil properties and behavior will subsequently lead to under- or over-designing of the upstream and midstream facilities. Therefore, the work aims to investigate the effects of drilling mud contamination on waxy crude oil properties such as pour point temperature, wax appearance temperature (WAT) and the yield strength of the waxy crude oil gel. Measurements conducted on the drilling mud contaminated mixture show no effect on the pour point, minimal changes to the WAT and considerable increase to the viscosity and yield stress values. Bottle test results indicate that drilling mud free oil layer which should be used in characterizing the crude oil exist only after 24 hours of gravity settling.


Keywords: Drilling mud contamination, waxy crude oil properties, yield stress.

References

[1] S.P. Srivastava, J. Handoo, K.M. Agrawal, and G.C. Joshi, “Phase transition studies in n-alkanes and petroleum-related waxes - A review,” J. Phys. Chem. Solids, vol. 54, no. 6, pp. 639–670, 1993.
[2] A. Japper-Jaafar, P.T. Bhaskoro, L.L. Sean, M.Z. Sariman, and H. Nugroho, “Yield stress measurement of gelled waxy crude oil: Gap size requirement,” J. Nonnewton. Fluid Mech., vol. 218, pp. 71–82, 2015.
[3] P. Singh, R. Venkatesan, H.S. Fogler, and N. Nagarajan, “Formation and aging of incipient thin film wax-oil gels,” AIChE J., vol. 46, no. 5, pp. 1059– 1074, 2000.
[4] P. Kondapi and F.M.C. Technologies, “Today’s Top 30 Flow Assurance Technologies : Where Do They Stand ?,” in Oshore Technology Conference, 6-9 May 2013, houston, Texas, USA.
[5] H. Barnes, “A review of the slip (wall depletion) of polymer solutions, emulsions and particle suspensions in viscometers: Its cause, character, and cure,” Int. J. Multiph. Flow, vol. 22, p. 132, 1996.
[6] A.S. Yoshimura and R.K. Prudhomme, “Wall Slip Effects on Dynamic Oscillatory Measurements,” J. Rheol. (N. Y. N. Y)., vol. 32, p. 575, 1988.
[7] P. S. GmbH, Pour Point Tester PPT 45150. 2004.
[8] L.T. Wardhaugh and D.V. Boger, “Measurement of the unique ow properties of waxy crude oils,” Chem. Eng. Res. Des., vol. 65, no. 1, pp. 74–83, 1987.
[9] C. Chang, D. Boger, and Q. Nguyen, “The yielding of waxy crude oils,” Ind Chem Eng Res, vol. 37, pp. 1551–1559, 1998.
Published
2018-10-30
How to Cite
JAPPER-JAAFAR, Azuraien et al. EFFECTS OF DRILLING MUD CONTAMINATION ON THE PROPERTIES OF WAXY CRUDE OIL. Platform : A Journal of Engineering, [S.l.], v. 2, n. 1, p. 2-14, oct. 2018. ISSN 2636-9877. Available at: <http://myjms.mohe.gov.my/index.php/paje/article/view/4410>. Date accessed: 19 dec. 2018.