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Sandstone separation method and device thereof

A technology for sand and gravel separation and sand and gravel, applied in the direction of separation methods, filtration separation, chemical instruments and methods, etc., can solve the problems of hidden dangers of natural environmental pollution and high processing costs

Inactive Publication Date: 2009-10-14
司军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only takes up a large amount of land resources (each well occupies an area of ​​2-5 mu), but also has high processing costs, and actually does not treat hazardous waste-drilling waste mud (listed in the 2008 Solid Hazardous Waste List of the Ministry of Environmental Protection ) for harmless and up-to-standard treatment, that is, its pollution source always exists and becomes a hidden danger of pollution to the natural environment, groundwater sources and ecology

Method used

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  • Sandstone separation method and device thereof
  • Sandstone separation method and device thereof
  • Sandstone separation method and device thereof

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Experimental program
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Embodiment 1

[0036] Such as figure 2As shown, the sand and gravel separation device used in this embodiment includes a box-shaped tank body 1; a cylindrical funnel-shaped fixed screen 2 is arranged in the tank body 1, and an anchor-type fixed screen agitator 3 is housed in the fixed screen 2 The lower outlet of the fixed sieve 2 is connected to the screw conveyor, namely the auger 4, the auger 4 is a tubular shaftless auger with an inclined setting, the lower part is located in the tank body 1, and the upper part extends out of the tank body 1; the auger motor 9 is set At the top of the auger 4, it drives the spiral piece in the auger 4 to rotate; the top of the auger 4 is also provided with a gravel outlet 6, and the middle part of the auger 4 is provided with a washing spray port 5; A slurry agitator 7 is provided, and a mud pump 8 is provided at the bottom of the tank body 1 .

[0037] Wherein, the structure of fixed screen 2 and agitator 3 thereof is as Figure 3a with Figure 3b S...

Embodiment 2

[0051] Such as Figure 5 As shown, the present embodiment is a sand and gravel separation device in the form of a trommel, including a box-shaped tank body 1; a trommel 10 is arranged obliquely in the tank body 1, the diameter of the drum is 1400mm, the length is 1400mm, and the inclination angle is about 10 degrees The screen inlet 10-1 is at the high end of the trommel, and the screen exit 10-2 is at the low end. The trommel 10 is driven to rotate by the motor through the transmission mechanism 10-3; the side of the trommel 10 is inclined to install a screw conveyor, namely Tubular shaftless auger 4.

[0052] Figure 5 The section of the A-A direction of the middle drum screen 10 is as follows Image 6 As shown, the trommel screen 10 is composed of a radial angle steel framework 10-5 and a peripheral screen 10-4. Also be provided with 18 helical strips 10-6 in the drum, the helix angle is 10 degrees, in order to promote waste mud, throw away then.

[0053] The structure ...

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Abstract

The invention discloses a sandstone separation method and a device thereof. A screen basket is arranged in a tank body and abandoned slurry first flows into the screen basket, fine slurry is filtered through the screen and enters the tank body outside the screen basket, and the sandstone enters a screw conveyer and is discharged outside the tank body through the screw conveyer. A rinsing spray mouth can be additionally arranged in the middle of the screw conveyer to spray and rinse the sandstone in conveying and cause the sandstone after discharge and separation to meet discharge standard. Meanwhile, the slurry generated in washing also flows in the tank body so that the consistency of the slurry in the tank is reduced and the slurry becomes good liquid, which is then output through a slurry pump and enters in next process for treatment. The invention not only can be independently used for separating and washing rock debris and sandstone in the abandoned slurry, but also is a key composition of the technology of a processing system that leads abandoned drilling mud not to drop to the ground and to continuously meet standards, changes a curing processing mode of traditional integral discharge at present and fills up a gap in the environment protection control field of domestic oil drilling.

Description

technical field [0001] The invention relates to a method and device for separating sand and gravel, in particular to a method and device for separating sand and gravel from waste mud, which can be applied to the treatment of waste mud produced in the process of drilling in oil and gas fields or mines, as well as other industrial Or the treatment of domestic waste liquid and residue. Background technique [0002] During the drilling process of oil and gas wells, the drilling fluid mixed with complex chemicals undergoes physical changes at high temperature and high pressure thousands of meters underground, and carries a large amount of cuttings and sandstones from the ground, which are discharged from the wellhead and become concentrated Slurry hazardous waste. For a long time, the treatment of oil and gas field drilling waste mud in my country has been concentrated and collected in the waste mud pool dug near the drilling rig, and then solidified and buried. This method not...

Claims

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Application Information

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IPC IPC(8): B01D24/14
Inventor 司军
Owner 司军