A GoM upstream operator experienced problematic pressure differentials. Over a period of time this resulted in heavy paraffin deposition and ultimately caused several pigs to become stuck in the 6” flowline. Upon an evaluation of available remediation methods, an extended reach mechanical solution was selected to remove the lodged pigs and properly remediate the paraffin deposition.
Diameter: 6 inch
Length: 18,980 feet
Pipe Schedule: 40
Scope of Work
Mechanically remediate the flowline with patented eelReel technology.
Plugged flowline shut in production with no other means of product transportation.
48-hour window of notice for planning and execution.
Riser access for flowline unavailable.
A documented possible bend in the flowline.
Several pigs were stuck in the flowline from previous attempts to eliminate restriction.
Plan of Execution
Assessment and evaluation of previous work performed on the pipeline provided sound engineering procedure.
Fluid handling and chemical equipment SME provided valuable risk management and hazard identification.
Project Preparation and Setup
Expedited planning and engineering enabled the client to respond quickly.
SME with pipeline infrastructure enabled quick identification of proper tie-in connection and associated equipment.
SIMOPS operations alongside marine vessel operators and coil tubing contractor.
Cantilever system enabled the pipeline to be lifted from the sea floor to the marine Liftboat for tool accessibility and launch.
Technical Achievements & Benefits
Executed 24-Hour SIMOPS schedule.
Patented tool design allowed for variance of back pressure control, which enabled single-run trips and minimal wear on tool infrastructure. This advantage greatly minimized the job schedule and project costs compared to other available pipeline remediation technology.
Successfully removed 125 bbls heavy paraffin throughout the pipeline.
Removed 3 stuck pigs within the flowline.
Tool mobilization within 48 hours of notice.
Successful re-use of chemical throughout the project prevented unwarranted waste.
Projected completed with zero incidents and no environmental impact.