Environmental protection system for skid-mounted drilling oil base and water base slurry processing without landing and processing technology thereof

Abstract

The invention relates to an environmental protection system for skid-mounted drilling oil base and water base slurry processing without landing. The environmental protection system mainly solves the problem thatexisting drilling circulating slurry is directly discharged, and water quality and soil can be polluted. The environmental protection system is characterized in that a slurry inlet pipeline is connected with a primary solid-liquid separating skid, and two vibrating screen outlets of the primary solid-liquid separating skid are connected with two corresponding steaming and washing dryer inlets in a steaming and washing oil removing skid; a rear bin slag slurry pump of the primary solid-liquid separating skid is connected with a sand remover inlet in a silt removing and sand removing device on a secondary solid-liquid separating skid; an outlet of the silt removing and sand removing device of the secondary solid-liquid separating skid and an outlet of a horizontal centrifuge are connected with an inlet of a front bin steaming and washing flotation area in the steaming and washing oil removing skid; an outlet of a steaming and washing dryer on the steaming and washing oil removing skid and an inlet of a drying device in a tail end drying multi-functional dosing skid are connected through a oblique plate groove; and an outlet of the slag slurry pump on a rear bin of the steaming and washing oil removing skid is connected with an inlet of a diaphragm pressure filter in a diaphragm pressure filter skid. The environmental protection system can achieve slurry processing without landing of different drilling stages, energy is saved, and consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of oilfield drilling auxiliary equipment, in particular to a skid-mounted drilling oil-based and water-based mud treatment environmental protection system and its treatment process. Background technique [0002] Drilling can be roughly divided into three layers from the surface to the completion of drilling, namely the surface soil layer, sand layer and rock layer. Therefore, there are water, mud, sand, rock salt, barite powder and oil for blowout prevention in the drilling circulating mud fluid. That is to say, the circulating mud fluid contains mud in the early stage, sand in the middle stage, and rock salt, barite powder and oil in the later stage. If the oil is produced in the oil field and the well is drilled in the water injection area, the mud fluid will contain various injection agents due to the mixing of the interlayer water injection fluid. Therefore, it is very necessary to use environmental pr...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem that the direct discharge of the existing drilling circulating mud liquid in the background technology will pollute the water quality and soil and affect the growth of animals and plants, and provide a method for thoroughly separating the three phases of solid oil and water in the mud liquid to achieve safety. Emission standard recovery system, the skid-mounted drilling oil-based and water-based mud non-landing treatment environmental protection system can realize the non-ground treatment of mud in different stages of drilling, realize the purpose of saving land, saving energy and reducing consumption, and improving efficiency

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