Abstract:
This thesis aims to assist evacuating Block 5A crude through designing of a
new 185 km Pipeline from WHCC to Fula.
The selected pipeline’s grade is API 5L X65 (with minimum specific yield
strength (MSYS) of 65,000 psi (4,485 barg)) for ANSI class 600. The
maximum allowable operating pressure (MAOP) of 99.28 barg (1440 psi)
is used in which shall be termed to be equivalent to the design pressure
(DP) for all selected outside pipeline’s diameters which are ranged from 8
inches to 22 inches and later the range has been shorten to be from 10
inches to 16 inches due to flow velocities’ restrictions.
The design is conducted into step by step approach, driven by process
hydraulic study which is started by determination of pipe wall thickness
based on the desired throughput and given maximum allowable operating
pressure (MAOP) for the selected pipe’s grade and nominal outside pipe’s
diameters range considering the corrosion allowance of 0.063 inches and
then calculating of the inside pipe’s diameters which are led to
determination of flow velocities and Reynolds numbers and then finding
the friction factors. Furthermore the calculation of the total pressure
required to transport liquid through a pipeline taking into account the
elevation profile of the pipeline and required delivery pressure at the
terminus. For a given pipeline system, the hydraulic horsepower, brake
horsepower, and engine horsepower calculations were illustrated. For
normal operation with 40 KBOPD maximum, the hydraulic test has
dictated that the pumping stations are required in the initial and final points
of the pipeline. There are no heaters or any other necessary chemical is
envisaged to assist flow of the liquid.
