Mining of Mineral Deposits

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Determination of the suitable drilling operating parameters in different geological formations El-Sharara Oil Field (South-Western Libya)

M.A. Sayed1, G.Y. Boghdady1, W.R. Abdellah1

1University of Assiut, Assiut, Egypt


Min. miner. depos. 2018, 12(3):1-8


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      ABSTRACT

      Purpose. The objective of this study is to determine the best operating conditions for the most notable drilling parameters (i.e. weight on bit (WOB), rotary drilling speed (RPM), and characteristics of drilling fluid) using field data obtained from El-Sharara Oil Field.

      Methods. The used data has been extracted from daily drilling reports of well named (NC-186/K04h) field. Such data contains information about the geological formations, casing strings, drill-bits, fuel consumption, flow rate of drilling fluid and other drilling parameters.

      Findings. The results reveal that, the lower geological formations of El-Sharara Oil Field, the harder are the upper formations. Therefore, it is recommended to apply heavy loads (i.e. WOB of 45000 lb) with low drilling speed (i.e. 100 rpm) in the lower formations; and to apply small loads (i.e. WOB of 19000 lb) with high drilling speed (i.e. 160 rpm) in the upper formations.

      Originality. This study evaluates the performance of drilling operation based on the interaction between rock formations and machine drilling parameters.

      Practical implications. Understanding such interaction between rock formations and machine drilling parameters will remarkably improve the rate of penetration (ROP) in the related geological formations. Consequently, the overall drilling costs will be reduced in terms of drilling time, life of drill-bit and fuel consumption.

      Keywords: improvement of drilling operation, operating parameters, rock properties, oil well drilling, El-Sharara Oil Field


      REFERENCES

Abdellah, W. (2007). Drilling parameters in relation to penetration rates, as a tool to predict the type of rock. PhD Thesis. Assiut, Egypt: University of Assiut.

Abouzeid, A.A., & Cooper, A.G. (2003). Experimental verification of drilling simulator. In 9th International Conference on Mining, Petroleum and Metallurgical Engineering. Ismailia, Egypt: Suez Canal University.

Ali, M., Abdellah, W., & Abd El-Aal, A. (2016). Drillability prediction using regression analysis for some Egyptian rocks. International Journal of Research in Engineering and Technology, 05(10), 138-149.
https://doi.org/10.15623/ijret.2016.0510023

Bilgin, N., & Kahraman, S. (2003). Drillability prediction in rotary blast hole drilling. In International Mining Congress and Exhibition of Turkey. Antalya, Turkey.

Clark-Lowes, D.D. (2008). The oil reserves of Libya-discovered, produced and yet to find: from analysis of the impact of recent new ideas from the reserve base. In AAPG International Conference and Exhibition. Cape Town, South Africa.

Dahl, F., Grøv, E., & Breivik, T. (2007). Development of a new direct test method for estimating cutter life, based on the Sievers’ J miniature drill test. Tunnelling and Underground Space Technology, 22(1), 106-116.
https://doi.org/10.1016/j.tust.2006.03.001

EL-Biblawi, M., Sayed, M., Mohamed, M., & EL-Rawy, W. (2007a). Some drilling parameters as a tool to predict diffe-rent categories of rocks. Journal of Engineering Sciences, 35(4), 995-1008.

El-Biblawi, M., Sayed, M., Mohamed, M., El-Rawy, W. (2007b). Effect of weight on bit and rotary speed on drilling rate and specific energy using different rocks. In International Conference on Mining, Petroleum and Metallurgical Engineering. Assiut, Egypt: University of Assiut.

El-Biblawi, M., Sayed, M., Boghdady, G., & Hamdallah, H. (2012). Effect of operating parameters and formation pro-perties on penetration rate in some sandstone rocks by using diamond core bit. Journal of Engineering Sciences, 40(2), 581-594.

Fello, N. (2001). Depositional environments, diagenesis and reservoir modelling of concession NC115, Murzuq Basin, SW Libya. PhD Thesis. Durham, United Kingdom: University of Durham.

Kahraman, S. (1999). Rotary and percussive drilling prediction using regression analysis. International Journal of Rock Mechanics and Mining Sciences, 36(7), 981-989.
https://doi.org/10.1016/s0148-9062(99)00050-9

Mellor, M. (1972). Normalization of specific energy values. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 9(5), 661-663.

Osgouei, R. (2007). Rate of penetration estimation model for directional and horizontal wells. MSc Thesis. Ankara, Turkey: Middle East Technical University.

Pathinkar, A.G., & Misra, G.B. (1980). Drillability of rocks in percussive drilling from “energy per unit volume” as determined with a microbit. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 32(9), 1407-1410.
https://doi.org/10.1016/0148-9062(81)90698-7

Sayed, M. (1992). Development and optimization of drilling system. PhD Thesis. Assiut, Egypt: University of Assiut.

Sayed, M. (1994). A mathematical model of single bit tooth to relate some drilling parameters. Journal of Engineering Science, 22(2), 219-226.

Sayed, M. (2001). Relation between operating parameters and bit performance in diamond core drilling. In International Conference on Mining, Petroleum and Metallurgical Engineering. Assiut, Egypt: University of Assiut.

Sayed, M. (2009). Fundamentals of rock drilling. Course for 2nd year mining students. Assiut, Egypt: University of Assiut.

Sayed, M. (2014). Drilling methods and their applications. Course for 3rd year mining students. Assiut, Egypt: University of Assiut.

Sayed, M., & Boghdady, G. (2010). Optimization of diamond core bit performance utilizing high rotary speed in drilling limestone rocks. Journal of Engineering Sciences, 38(6), 1531-1543.
https://doi.org/10.1016/0148-9062(72)90016-2

Seifabad, M.C., & Ehteshami, P. (2013). Estimating the drilling rate in Ahvaz oil field. Journal of Petroleum Exploration and Production Technology, 3(3), 169-173.
https://doi.org/10.1007/s13202-013-0060-3

Selim, AA, & Bruce, WE. (1970). Prediction of penetration rate for percussive drilling. US Bureau of Mines RI 7396.

Teale, R. (1965). The concept of specific energy in rock dril-ling. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 2(1), 57-73.
https://doi.org/10.1016/0148-9062(65)90022-7

Wijk, G. (1991). Rotary drilling prediction. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 28(1), 35-42.
https://doi.org/10.1016/0148-9062(91)93231-t

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