Mud weighting process and special equipment

Abstract

The invention relates to a mud weighting process and a special device, and belongs to the technical field of oil exploration and development drilling mud weighting technology. It consists of a mud pool, a sand pump, an air compressor, a stone powder tank, and a stone powder mixing pump. The stone powder mixing pump is a tubular body combination structure, and one end has two vertically crossed inlets. The vertical inlet is connected to the mud pool through the heavy slurry valve, slurry supply pipeline and sand pump, and its horizontal inlet is connected to the mud tank through the powder inlet valve and the stone powder pipeline. Stone powder tank; the other end of the stone powder mixing pump is connected to the mud pool through the mixing pipeline; the stone powder tank is connected to the air compressor through the air inlet pipeline and the air source valve. A mud weighting process, including the following steps: (1) base slurry circulation: through sand pumps, stone powder mixing pumps, and mud pipelines, the base slurry in the mud tank is self-circulating; (2) mud weighting: through the air compressor The internal stone powder is gasified, so that it flows into the stone powder mixing pump, and after being mixed and weighted with the base slurry, the heavy slurry flows into the mud pool.

Description

Technical field: [0001] The invention relates to a mud weighting process and a special device, and belongs to the technical field of oil exploration and development drilling mud weighting technology. Background technique: [0002] In order to explore and develop oil and gas reservoirs in deep formations, the drilling depth has increased year by year, and more and more complex formations with high pressure and multi-pressure systems have been drilled, and the application range of high-density mud has become wider and wider. At present, there are three traditional production methods for high-density mud. One is to manually pour the bagged stone powder into the mixing funnel for mud weighting. The second is to add the packed stone powder to the mixing funnel by a crane. The way of mud weighting into the mixing funnel or mud pit. These three methods of aggravating the mud all have stone powder in contact with the ambient air, resulting in large stone powder dust in the air, the...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a special device for mud weighting in view of the disadvantages of dust pollution in the existing mud weighting production process, hazards to personnel health, waste of stone powder materials, low efficiency of weighting operations, and high labor intensity

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