Harmless treatment method for solid wastes of offshore oil drilling platform

Abstract

The invention discloses a harmless treatment method for solid wastes of an offshore oil drilling platform. The method comprises the following steps: filtering a rock debris and mud mixture dischargedfrom a shaft, separating solid wastes from the mixture, carrying out filter pressing dehydration on the treated solid wastes to form solid wastes with low water content, and transferring the solid wastes subjected to filter pressing dehydration to a land building material sintering plant. The harmless treatment method for solid wastes of the offshore oil drilling platform recycles the wastes by using the solid wastes of the offshore oil drilling platform as a raw material for building material firing, and greatly improves the building material processing efficiency by reducing the treatment steps during building material calcination due to various components in the solid waste fully meeting the conditions during building material calcination.

Description

technical field [0001] The invention relates to the technical field of offshore drilling platforms, in particular to a method for harmless treatment of solid waste on offshore oil drilling platforms. Background technique [0002] In the process of offshore oil drilling, a large amount of shale cuttings and waste mud will be produced. In order to realize the harmless treatment of drilling cuttings and mud, there are the following difficulties: First, the offshore oil drilling platform has a small space and cannot use large-scale operating equipment ; Second, the traditional method of packaging in ton bags has high cost, low efficiency, and is not easy to stack; third, the oil and water content of cuttings and mud are high, and the oil-water mixture is easy to be scattered after the ton bags are broken; the fourth is the inside of the transfer box The space is narrow, it is difficult to lay waterproof cloth, and it is inconvenient to observe and seal the inspection. Secondly, ...

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Problems solved by technology

[0002] In the process of offshore oil drilling, a large amount of shale cuttings and waste mud will be produced. In order to realize the harmless treatment of drilling cuttings and mud, there are the following difficulties: First, the offshore oil drilling platform has a small space and cannot use large-scale operating equipment ; Second, the traditional method of packaging in ton bags has high cost, low efficiency, and is not easy to stack; third, the oil and water content of cuttings and mud are high, and the oil-water mixture is easy to be scattered after the ton bags are broken; the fourth is the inside of the transfer box The space is narrow, it is difficult to lay waterproof cloth, and it is inconvenient to observe and seal the inspection. Secondly, it is inconvenient to discharge the material. Fifth, the mixture of cuttings and mud contains oil-based hydrate, which is relatively viscous and easily adheres to the surface of the solid-liquid separation device, blocking the The filter hole cannot be filtered afterwards; the sixth is that the storage space of the traditional big bag is small, and the staff needs to replace it many times. , direct roasting, the temperature cannot be quickly transferred to the interior of the sintered body, resulting in the hardness inside the formed building material not meeting the standard; eighth, due to the oil-based hydrate on the surface of the solid waste of the oil-based hydrate drilling platform, when stirring, the internal The solid waste wrapped in oil-based hydrate cannot be fully mixed evenly, resulting in poor integrity of the finished product. Therefore, we propose a harmless treatment method for solid waste from offshore oil drilling platforms

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