Drilling And Completion

Drilling and Completion.
Course Work Of Drilling and Completion.

Eng. Guido Piccone.
Science and the built Environment 2010-2011 M-Level.
10th of December 2010

Course Work 1- Drilling and Completion

Table of Content
Introduction ............................................................................................................................... 3 Case Study No. 1:“Redevelopment of the Ebughu Field” ..................................................... 4 1. 2. 3. 4. 5. Situational Context ............................................................................................................... 4 Field Development & Re-development problems ................................................................. 5 Re-development engineering solutions................................................................................ 6 Re-development Benefits..................................................................................................... 8 Case Study Conclussions .................................................................................................... 8

Case Study No. 2: “Redevelopment of a Matured Multilayered Carbonate OffshoreField Through High-Technology Horizontal and Multilateral Wells”. ............................................. 9 6. 7. 8. 9. Situational Context ............................................................................................................... 9 Field Development & Re-development problems ............................................................... 10 Re-development engineeringsolutions .............................................................................. 11 Re-development Benefits................................................................................................... 12

10. Case Study Conclussions .................................................................................................. 13 Conclusions............................................................................................................................ 15 References .............................................................................................................................. 16

Table of Figures
Figure 1. Ebughu Location Map .................................................................................................. 4 Figure 2.Production Performance of the Ebughu Field ............................................................... 5 Figure 3. Ebughu Standard vs. All in One Completion ................................................................ 8

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Course Work 1- Drilling and Completion

Introduction
This reports aims to analyses and discuss the drilling and completion problems, strategies, benefitsand lesson learned from the two cases studies mentioned below: 1. “Case Study: Redevelopment of the Ebughu Field”. R.A. Clark, A.A. Afemari, T.E. Ezeukwu and H. Awi, Addax Petroleum Development (Nigeria) Ltd. SPE 65199. Society of Petroleum Engineers, 2000. 2. “Redevelopment of a Matured Multilayered Carbonate Offshore Field Through HighTechnology Horizontal and Multilateral Wells”. Rajesh Kumar,SPE, S. Ramanan, SPE, and J.L. Narasimham, SPE, Oil & Natural Gas Corporation. SPE 97520-PA. Society of Petroleum Engineers, 2007. The Redevelopment of the Ebughu Field deals with the aggressive redevelopment plan and execution carried out in a period of 10 month by Addax in the offshore Ebughu oil field located at the eastern Niger delta in Nigeria in 1999. Since its discovery in 1988, the fieldproduction was low and filled only 10% of the total capacity of the platform up to 1998. The low production rate was associated mostly to the reservoir being a thin layer containing viscous oil. In 1998, Addax started an oil field review and redevelopment plan, which increased the production from the previous 1000stb/day up to 10000stb/day in 1999, completed the platform capacity and also...