The Procedure Of Onshore Pipeline Decommission

Pipeline Decommissioning procedure varies depending on the location of the pipelines. Thus, these procedures can be broadly divided into offshore and onshore categories.

Offshore pipelines include oil supply lines and underwater pipelines. The process of Decommissioning of Pipelines in both these locations are more or less similar. The process includes pipeline recovery, evacuation in-situ and safeguarding on-site for further recovery. However, there are offshore operators who prefer evacuation and conservation processes as pipeline recovery is a very expensive way in relation to manpower and capital charges.

Onshore Pipeline Decommissioning process, on the other hand, is a less complicated and cheaper procedure though its functioning is almost similar to offshore decommissioning.

The sole responsibility of fitting, functioning, pipeline safety and final decommissioning rests on the owners or operators. There are also certain government rules and laws which make it a compulsory responsibility of the oil and gas agency owners to take care of the health and safety of its workers and citizens of the place.

Onshore Pipeline Decommissioning includes activities that are done for pipeline networks situated on the land or below the ground surface. These procedures include:

·        Pipeline rinsing with inert gas,

·        Cleaning of pipeline

·        Detachment of shrinking pipelines from the sources of the supply of products

·        Recovery of pipeline and reuse in different processes

Onshore decommissioning favours recovery of pipeline and workers can direct the materials into fragments of metal for reusing into different fruitful components or recycle these so that they can be used in alternative locations.

Detachment is an important factor in Pipeline Decommissioning

Decommissioning Of Pipeline demands disconnection or detachment of all running lines that are to be secluded from gas reservoirs and other types of storages and the active transferable elements. This step of decommissioning ensures a safe and secure conversion or change of lines from active to inactive position.

Evacuating Or Weeding Out The Gas Lines

Removal of the gas lines can be done with an inert gas such as nitrogen. It drives out any residual oil/gas remained within the pipeline space. Inert gases check the hazards from fire or explosions from a decommissioned line by discarding inflammable materials and making the flow line still and static.

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