SU1436018A1 - Apparatus for size fraction-wise sampling of mud while drilling - Google Patents

Abstract

This invention relates to well testing while drilling. The aim of the invention is to increase the reliability of separation of the sludge into fractions while simultaneously washing the particles of drilling mud. The mud slurry is discharged through the discharge of the vibrating screen of the sludge separator into the housing on the upper section of the grate assembly, water enters the bottom of the housing through the nozzle, filling the housing volume through the perforation of the pan, and overflows the upper open edge, cleaning the slurry from drilling mud particles and concentrating small particles of sludge in the recess of the pallet. Vibrations of the vibrosieve sludge separator are transmitted through a rigid connection to the casing and ensure the separation of the sludge into fractions corresponding to the diameter of the flow sections of the corresponding sections. 1 il. $

Description

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This invention relates to well testing while drilling.

The purpose of the invention is to increase the reliability of separation of the sludge into fractions while simultaneously washing the particles of drilling mud.

The drawing shows a diagram of the device.

The device consists of a housing 1, in the bottom part of which the stirring is supplied by a branch pipe 2 for supplying water, a block of gratings 3 with successively installed in height sections with increasing height, diameter of passage sections, vibrating screen slurry separator 4, pallet 5 funnel shaped; the upper part of which is made perforated, the upper part of body 1 by rigid connection 6 is rigidly fixed on the vibratory bed of the sludge separator 4 so that the top of the inyca 1 is below the level of the discharge | sludge separator 4. The device operates as follows |

: Slurry from the vibrosieve sludge separator 4; the solution goes to the upper section of the unit: current 3 of the housing 1. Water is fed into the bottom part through the nozzle 2, which through the perforation of the tray 5 fills the volume of the housing 1 and overflows through the upper open edge, .a sludge from: drilling mud particles and a concentrator: fine sludge particles in the recess

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Don 5. The oscillations of the vibrating screen of the sludge separator 4 are transmitted through a rigid connection 6 to the housing 1 and ensure the separation of the sludge into fractions corresponding to the diameter of the flow sections of the respective sections.

After the well has passed a predetermined interval, the block of gratings 3 with the pallet 5 is removed from the housing 1 and the individual fractions are analyzed.

Claims (1)

Invention Formula A device for fractional sampling of sludge in the drilling process, containing a housing in which a water supply pipe and a grid block are placed with successively mounted sections with an increasing diameter of the flow sections and a pallet, characterized in that, in order to increase the reliability 0 separating the sludge into fractions while simultaneously washing it from drilling mud particles, the water supply nozzle is installed in the bottom of the housing, and the upper part of the sump, which has a funnel shape, is perforated, and the housing is rigidly fixed on the additionally introduced vibrating screen. so that the top of the casing is at the level of the discharge of the sludge separator. five about