Method for the removal of deposits accumulated in the pipelines of transport of gas
AssigneeChimec S.p.A.
InventorsMarco BUCCOLINI, Andrea QUARANTA, Alessandro ALLEGRUCCI
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Abstract
The present invention relates to a new use of foaming products for the production of a compact foam pig, by means of the forced interaction of gas, water and product, capable of moving huge quantities of water accumulated in the gas production pipelines. The water removal takes place in very quick periods of time and allows an important decrease in the pressure drops with consequent quick increase in the produced gas quantities.
Claims24
A method for removal of a deposit accumulated in a pipeline for production and/or transportation of natural and/or process gases which flow along the pipeline, the method comprising the following steps:
- a) blocking the flow of gases along the pipeline;
- b) providing a compact foam cushion (foam pig) which completely fills-up a section of the pipeline downstream of the blockage and upstream of the deposit;
- and
- c) reactivating the flow of gases along the pipeline, thereby pushing the foam pig along the pipeline and carrying the deposit with it.
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An industrial plant for production and/or transportation of natural and/or process gases including a pipeline for the transportation of gases, equipped with means for generating a foam pig inside the pipeline itself and suitable for removal of a deposit which impedes flow of the gases through the pipeline.
An oil refinery plant having a discharge circuit and a torch, wherein the plant comprises a pipeline in the discharge circuit, preceding the torch, equipped with means for generating a foam pig inside the pipeline itself and suitable for removal of a deposit and of process gas accumulated within said pipeline.
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Dependencies are inferred from the claim text.