Optimizing Drill Bits Performance in Highly Unconfined Compressive Strength Formation, Sinai Oil Field, Egypt
Ahmed Yasin1, S. E. Shalaby2, M. S. Farahat3, A. M. Salem4

1Ahmed Yasin*, Petroleum Drilling and Work over Department, Belayim Petroleum Company, Cairo, Egypt.
2Prof. Shohdy El-Maghraby Shalby, Petroleum Department, Faculty of Petroleum and Mining Engineering, Suez, Egypt.
3Prof. Mohamed Shehata Farahat, Petroleum Department, Faculty of Petroleum and Mining Engineering.
4Dr. Adel Mohamed Salem, Petroleum Dapartment, Faculty of Petroleum and Mining Engineering, Suez, Egypt.
Manuscript received on February 25, 2020. | Revised Manuscript received on March 15, 2020. | Manuscript published on March 30, 2020. | PP: 2057-2060 | Volume-8 Issue-6, March 2020. | Retrieval Number: F7427038620/2020©BEIESP | DOI: 10.35940/ijrte.F7427.038620

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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: IIn Belayim Oil field, Sidri concession, 8 1/2″ section is composed of conglomerates with overall Unconfined Compressive Strength (UCS) varies from 25,000 to 40,000 psi. This section was mainly drilled with Polycrystalline Diamond Compact (PDC) bits and Tungsten Carbide Insert (TCI) drill bits. Drilling 1000 meter in 8 1/2″ section needed minimum 6 to 8 drill bits. The average rate of penetration (ROP) was 2.8 (meter per hour) MPH and the average drilled interval was 135 m. The rock bit that had been used in offset wells achieved low ROP and short drilled intervals as well, meanwhile, PDC bit achieved moderate average ROP and relatively short run intervals The operator target was to reduce the drilling time by raising ROP and the drilled interval per drill bit; the hybrid bit was presented to achieve that target. The hybrid bit achieved the highest ROP record and the longest drilled interval in Sidri concession achieving 200 percent improvement from offsets’ average performance. Finally, the paper recommended using three hybrid bit in the first three runs and in the fourth run, where the unconfined compressive strength reached its maximum values, TCI drill bit could be used.
Keywords: Conglomerate Formation, High Unconfined Compressive Strength Formation, Hybrid Drill Bit, Drill Bit Optimization.
Scope of the Article: High Performance Computing.