Performance Evaluation of Lightweight Oilwell Cements

Abstract:

Drilling through depleted zones and weak formation can prove troublesome since the fracture resistance reduces from its normal boundary [1]. To successfully drill a hole section requires the selection of a low density cement slurry to prevent loss circulation while not exceeding the fracture resistance of the formations exposed. Large number of loss circulation will greatly impact the drilling cost and rig time. This research is focusing on the performance studies of lightweight oilwell cements using foam and cenosphere as the lightweight agents. All tests were conducted according to API Recommended Practice 10B-2. Three performance tests have been conducted such as density test, free water test and compressive strength test. The comparison was made at different percentage of lightweight agents e.g. 10, 20, 30 and 40 percent by weight of cement (%BWOC) respectively. The findings show the performances of formulated foam cement and cenosphere cement are within API limit. However, foam cement can reduce the density of set cement in about 8% greater than the cenosphere cement.

• Periodical: Advanced Materials Research (Volume 1119)
• Pages: 657-661
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1119.657
• Online since: July 2015
• Authors: Arina Sauki*, Muhammad Ilham Juanda, Azlinda Azizi, Mohammad Asadullah, Tengku Amran Tengku Mohd, Nurul Aimi Ghazali, Nur Hashimah Alias
• Keywords: Cenosphere, Compressive Strength, Density, Foam, Free Water

References

[1] P. Revil, B. Jain, Schlumberger Dowell, A New Approach to Designing High Performance Lightweight Cement Slurries for Improved Zonal Isolation in Challenging Situations, IADC/SPE47830, (1998).

DOI: 10.2118/47830-ms

[2] M. A. Addis, Brent In-Fill Drilling Programme: Problems Associated With Drilling Depleted Reservoirs, SPE/IADC 67441, (2000).

DOI: 10.2118/67741-ms

[3] T. Kjostvedt, New Technologiy for Laboratory Mixing of Foam Cement to Better Reflect Onsite Mixing Method, (2011).

[4] Konstantinos, et al "Relationship between Engineering Properties, Mineralogy, & Microstructure in Cement-Based Hydroceramic Material cured at 200-350oc, (2008).

[5] A. Samsuri, S. K. Subbiah, Improvement of Blended Cement Characteristics as Possible Alternative for Oil Well Cement, (1997).

[6] O. Taiwo and J. Ogbonna, Institude of Petroleum Studies, University of Port Harcourt, Nigeria Foam Cementing Design and Application: A Cure For Low Gradient Associated Problems in Deepwater Operations in the Gulf of Mexico, SPE150767, (2011).

DOI: 10.2118/150767-ms

[7] T. Maeland, Evaluation of Foam Cementing the Reservoir Liner in Deviated Wells on the Ekofisk M Platform, (2009).

[8] T. Kjostvedt, New Technology for Laboratory Mixing of Foam Cement to Better Reflect Onsite Mixing Method, (2011).

[9] M. A. Addis, Brent In-Fill Drilling Programme: Problems Associated With Drilling Depleted Reservoirs, SPE/IADC 67441 (2000).

DOI: 10.2118/67741-ms

[10] Halliburton Laboratory Procedures Manual: Foam Slurry Testing, Part 3, Vol. 4, pp.3-20, (2000).