GATE was responsible for developing the overall Aseng Water Injection System Basis of Design.

GATE undertook a chemical vendor qualification process on behalf of Noble to procure the best suited chemical and chemical support for both the Aseng and Alen assets based on their fluids, and system along with their specific operational needs.

GATE was involved in formulating the strategy for hot oil circulation and pigging operations for Chissonga. The hot oil circulation study involved optimization of the hot oil injection pressures and temperatures required to displace the cold dead leg in the pigging loop following an extended shutdown. The pigging study involved optimizing the pigging frequency, topsides injection pressures and pig velocities taking into account the production function for the entire life of the field.

GATE was responsible for the flow assurance modeling to support Detailed Engineering, Final Commissioning and Startup and Operations Readiness for the Aseng Development. This included steady-state and transient modeling of the production, gas injection, and water injection systems.

GATE was approached by Tullow to provide a detailed view of the several options available in the industry for remediation of hydrate plugs in oil and gas lines, merits and demerits of each strategy and their applicability to the Jubilee field. The project also involves developing detailed procedures for hydrate remediation/removal for Jubilee considering the available topsides and subsea infrastructure.

After an in-line inspection of a pipeline in West Africa, a client discovered significant wall loss in the first three miles of the line. The tool also returned significant wax deposits, casting doubt on the current wax management efforts in place.

The wells producing to the pipeline historically produced H2S; however, the worst offenders were shut-in quickly after it was discovered that they were producing extremely high concentrations of the sour gas.

A West Africa field operator witnessed an abnormal increase in pressure topsides when the flowline circulation pump was used to pump dead oil into the production line. No increase in subsea pressure was observed. Operational history prior to blockage hinted at the possibility of the presence of one or both wax and hydrate blockages in the production line. Depressurization options were limited by the blocked gas lift line.