SU979613A1 - Drilling mud cleaning apparatus - Google Patents

Description

one

The invention relates to the mining industry, and more specifically to the oil and gas industry, and can be used in drilling for cleaning solutions.

Known hydrocyclones containing a cylindrical body with a tangential injection of the solution, mud and branch pipe, a cylindrical pipe in the lower part goes into the cone 1.

The disadvantage of these devices is the low efficiency of cleaning drilling muds from particles of drilling rocks, and large losses of mud.

The closest technical solution is a device for cleaning drilling mud, including a housing, in the cavity of which a perforated hollow cylinder is housed, a drive, blades, an inlet located in the dyed part of the housing and a discharge port 2.

The disadvantage of this device is the low quality of cleaning undiluted solutions and the inability to produce washing chemicals from the surface of the particles of the slime, which leads to high costs of chemicals for processing

solution and environmental pollution.

The purpose of the invention is to improve the quality of drilling mud cleaning from drill cuttings, the path of washing chemical reagents.

The goal is achieved by the fact that a drilling mud cleaning device, including a housing in which a perforated cylinder is placed in a cavity, an actuator, blades, an outlet branch pipe located in the lower part of the housing and a discharge port, is equipped with a discharge line with a divider and a cylindrical tank with a discharge port, installed in the lower part of the case and filled with activated

15, and the perforated hollow cylinder is mounted on shock absorbers above a cylindrical container, the cavity of which communicates with the cavities of the cylinder and body, the blades mounted on a drive shaft positioned along the axis of the perforated cylinder, and the divider is installed in the lower part of the cylindrical container.

Claims (2)

The drawing shows a device for cleaning mud. The device consists of a housing 1, a perforated hollow cylinder 2 forming the inner wall in the upper part of the case, shock absorbers 3, on which the cylinder 2 is suspended, the outlet 4 and spring centralizers 5. A cylindrical container 6 with a pressure line is installed in the lower part of the case, with a divider 7, and an unloading hatch 8. In addition, the installation includes a drive 9 with a shaft 10 and blades 11 and 12, and the blades 12 are made in the form of a solid disc with eccentric ribs welded on both sides. The device works as follows. The drilling fluid from the well enters the perforated hollow cylinder 2, and the blades 11, the shaft 10, is thrown onto the perforated walls through which they are filtered and through the outlet nozzle 4 are sent to the circulating drilling system. With the impact of the drilling fluid on the perforated walls of the cylinder 2, after the bottom they begin to vibrate. Dampers 3 and centering springs 5 contribute to stable vibration of the walls. Particles of cuttings, larger than perforation cells, slide downwards, where they are blades 12, shaft 10 are thrown onto perforated cylinder 2 and are dehydrated. Next, the dewatered particles accumulated on the perforated wall, through the gap between it and the blades 12, under the action of vibration and gravity slide into a cylindrical tank 6 filled with activated water, which facilitates the washing of chemical reagents adsorbed on the surface of the drilled particles. The activated water with cuttings particles is twisted by blades 12 and the particles spiral down to the bottom. With the complex movement of the particles of drill cuttings in activated water, there is an intensive washing of adsorbed chemical reagents on their surface. The washed particles settle to the bottom of the installation, squeeze the activated water, enriched with chemical reagents, upwards through the annular gap into the housing 1 and into the perforated cylinder, where it moves with the drilling fluid and enters the circulating drilling system through the outlet pipe 4. As the sediment accumulates, in the lower part of the cylindrical container 6, the pressure line is opened and the sediment through the distributor 7 is additionally washed with clean water. The water with the washed chemicals is raised to the upper part of the device and the drilling circulation system flows through the outlet nozzle 4. Washed sludge through manhole 8 is dumped or collected into containers. The proposed device for cleaning drilling mud in production makes it possible to maintain a low solids content in the drilling fluid, by constantly removing cuttings particles, reducing the consumption of chemical reagents by washing the sludge. The stability of the drilling fluid increases, the mechanical speed increases, the penetration rate increases, the accident rate decreases, and the quality of environmental protection works improves. Claims Device for cleaning drilling mud, comprising a housing, in the cavity of which a perforated hollow cylinder is placed, a drive, blades, an outlet located at the bottom of the housing, and a discharge hatch, characterized in that, in order to improve the quality of drilling fluid cleaning rocks due to the washing of chemical reagents, it is equipped with a pressure line with a divider and a cylindrical tank with a discharge hatch installed in the lower part of the body and filled with activated water. g a perforated hollow cylinder is mounted on the am. shock absorbers above the cylindrical container, the cavity of which communicates with the cavities of the cylinder and the housing, with the blades mounted on the drive shaft. placed along the axis of the perforated cylinder, and the divider is installed in the lower part of the cylindrical container. Sources of information taken into account in the examination 1.Golovko V.N. Equipment for the preparation and cleaning of drilling fluids. M., “Nedra, 1971, p. 34 2. USSR author's certificate number 348235, cl. B 07 B 1/40, 1965 (proto-p).