Vertical distribution structure applicable to treatment of oil-containing drillings in offshore oil-gas development

Abstract

The invention belongs to the field of environmental protection of offshore oil-gas fields and particularly provides a vertical distribution structure applicable to treatment of oil-containing drillings in offshore oil-gas development. The vertical distribution structure comprises three parts, namely a vertical hammer mill assembly, an electromagnetic heating system, a sealing and supporting system. The oil-containing drillings enters the vertical hammer mill assembly by a feeding channel, and a transmission shaft drives radial hammer mill blade and axial hammer mill blades to rotate, so that solid phases in the oil-containing drillings are continuously hammer-milled and crushed, further the hammer-milling heat is generated, and the oil-liquid diffusion distance is reduced; simultaneously,due to the electromagnetic heating system, the temperature of a vertical hammer-mill drum body is increased, so that under the compounding action of hammer-milling heat and electromagnetic heating, the oil liquid in the oil-containing drillings is vaporized and separated; a heat-insulating layer wrapping outside the vertical hammer-mill drum body can inhibit heat loss effectively. The vertical distribution structure provided by the invention solves the defects and shortages of other structures well, has the advantages of small occupied area, high treatment efficiency and low energy consumption, high-efficiency and safe treatment of the oil-containing drillings are realized and the environmental protection requirements of green development of the offshore oil-gas development is met.

Description

technical field [0001] The invention relates to a vertical arrangement structure suitable for processing oily drill cuttings in offshore oil and gas development, belonging to the field of environmental protection of offshore oil and gas fields. Background technique [0002] With the deep development of offshore oil and gas fields, higher and more stringent requirements are put forward for drilling fluids, and oil-based drilling fluids are widely used in offshore oil and gas drilling because of their good rheology, fluid loss control and lubricity. Even the entire well section will be accompanied by a large amount of oily cuttings. Oily drilling cuttings contain a large amount of waste oil, drilling fluid additives and other harmful substances, which will cause great harm to the marine environment if not handled properly. The research level of my country's oily drilling cuttings processing equipment and technology has become one of the environmental bottlenecks restricting t...

AI Technical Summary

Problems solved by technology

[0003] At present, the treatment of oily drilling cuttings produced in the process of offshore oil and gas development at home and abroad generally adopts the treatment method of "collection at sea-delivery by ship-centralized treatment on land" or re-injection into the formation. However, the former treatment cost is high, and the latter not only wastes a lot of base oil resources, and the technical difficulty is high, the cost is high, and it is not suitable for large-scale promotion and application

In addition, limited by the deck area of ​​the offshore drilling platform, the treatment methods such as microbial treatment, solvent extraction, and incineration used in the treatment of oily drilling cuttings on land cannot be applied to offshore working conditions due to the large footprint required

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