Current Volume 7
Manufacturing Process Of 30 × 1 Inches Pin and Box Premium Threaded Casing Connection for Deep Offshore Wells
Abstract
Well casing is necessary after the drilling of the wellbore in order to consolidate the well, to protect the wellbore from falling, to protect the fresh water aquifers by preventing the drilling fluids used or oil to seep into the underground water reservoirs, and to facilitate the execution of drilling and completion operations. The main function of casing and tubing threads is to contain wellbore pressure and provide structural integrity to the well. For this purpose, pipe casing is used, consisting of casings assembled together by threaded casing connections. The emerging challenges in oil and gas exploration and production activities in deep and ultra deep waters in harsh environments necessitates the need to develop innovative threaded casing connections and design methodology capable of containing wellbore pressures and ensuring structural integrity to the well. Premium threaded casing connection has been a proven technology to ensure the integrity of drilled wells in deep offshore oil and gas drilling and completions. They are suitable for HTHP (high temperature, high pressure) wells, the connection has longer coupling, and provides better strength and stealing properties. This paper brings forward the detailed manufacturing processes of 30 X 1 inches PIN (male) and BOX (female) premium threaded casing connection for a typical West Africa deepwater offshore project that serves as conduit. A Computer Numerical Control (CNC) machine is used with a G-code programme to run the CNC machine to thread and insert the top and bottom seal of the casing connectors. A step by step detailed manufacturing process from the raw forged material to the machining of the finish casing connectors are elaborated in this paper to provide better understanding and for research purpose.
Keywords
Premium Threaded Casing Connection, Computer Numerical Control (CNC) Machine, G-Code Programme, Deep Offshore HTHP Wells, And Manufacturing Process.
Citations
IRE Journals:
Tekena Cyrus Ikpaki , Godloves Tondie Nonju
"Manufacturing Process Of 30 × 1 Inches Pin and Box Premium Threaded Casing Connection for Deep Offshore Wells" Iconic Research And Engineering Journals Volume 7 Issue 1 2023 Page 313-321
IEEE:
Tekena Cyrus Ikpaki , Godloves Tondie Nonju
"Manufacturing Process Of 30 × 1 Inches Pin and Box Premium Threaded Casing Connection for Deep Offshore Wells" Iconic Research And Engineering Journals, 7(1)
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