Scale removal from down-hole tubing of oil and gas, utilising high pressure water atomisers:

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Scale removal from down-hole tubing of oil and gas, utilising high pressure water atomisers:

Nasr, G.G. / Hilal, N. / Azzopardi, B.

This is an investigation of the novel utilization of high pressure water sprays impacting upon surfaces of the down-hole tubing of oil and gas wells in order to remove scale. A combined experimental and modelling/theoretical investigation is planned with cooperation between the University of Nottingham and the University of Salford. The experimental work will have two aspects: scale removal experiments of simulated downhole tubes under atmospheric pressure conditions, to concentrate on fundamental aspects of the problem, and scale removal of the simulated down-hole tubes at high ambient pressure (typically 20 MPa) to more closely match practical conditions. Theoretical/modelling work will be based upon existing codes with the addition of sub-models for water spray-scale removal under different oil and gas well operating conditions. This paper provides a detail review of the past and current work involved in removing the hard scale from the production tube of the oil and gas wells. It will also give an overview of the design and analysis of the proposed simulated apparatus under atmospheric pressure conditions, using high pressure water atomisers, which will be used in determining the removal of the corresponding scale.