SU1526738A1 - Screw deaerator - Google Patents

Abstract

The invention relates to a device for degassing and is intended for the degassing of drilling mud in the study of its properties. The aim of the invention is to provide stabilization of the operation of the degasser. The pressure chamber 10 is installed concentrically outside the degassing chamber 7. On the shaft 3 of the engine in the pipe 11 for supplying the pressure chamber 10 a screw 4 is installed, on the same shaft between the bottoms of the gas degassing 7 and pressure 10 chambers a reflector 5 is fixed. The drilling fluid captured by the screw 4 fills pressure chamber 10. Overflowing over the edge, it enters the degassing chamber 7, which ensures its constant flow. Hitting the blades 6 and splashing, the solution is degassed. The resulting gas is aspirated through the nozzle 12, and the spent solution is discharged back into the chute through the nozzle 8. 1 sludge.

Description

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The invention relates to the degassing of various substances, in particular drilling fluids, used in the drilling of wells.

The purpose of the invention is to ensure the stabilization of the operation of the degasser.

The drawing shows a screw degasser, section.

The degasser contains an electric motor 1 with a coupling 2 and a shaft 3 on which the screw 4 is fixed. On the shaft 3 there is also fixed a reflector 5, a impeller 6 with six vanes for spraying the drilling fluid, which enters the degassing chamber 7. The chamber 7 is equipped with a drain pipe 8 . At the inlet of the inlet pipe

ten

phase through pipe 12 is diverted from the camera

7 for analysis. The degassed drilling fluid is discharged through the pipe 8.

The supply of the degasser with a pressure chamber, as well as the installation of the auger and the deflector, allows you to stably maintain the flow rate of the drilling fluid through the degassing chamber, regardless of the change in the density of the drilling fluid, which can vary during operation from 1.0 to 2.5 kg / cm and also from screw performance. Stabilizing the degassing process improves the accuracy of gas phase analysis in the drilling fluid, reduces the density of the drilling fluid to the formula. Screw degasser containing the degassing chamber 7 is concentric to the minimum value and, correspondingly, the well drilling costs are installed on the outside.

10 with a branch pipe II supply. The selected gas phase for analysis is aspirated through the nozzle 12 by a flow rate booster (not shown).

Shyekovy degasser works next-20 gatel, on the shaft of which a screw is fixed

Shimno.i and paddle wheel installed in DegaPri switch on the motor 1 augmentation chamber, equipped with a receiving

4 begins to pump out of the gutter (not in and out branch pipes, as well as pipe) drilling mud into the pressure chamber to drain the selected gaseous medium,

10, after filling the pressure chamber 25 characterized in that, in order to stabilize, it is returned to the chute. Simultaneous processing of the degasser, it is supplied

drilling mud through a suction pipe with a pressure chamber with a supply pipe

9 enters the degassing chamber 7. located concentrically outside the wheel When the wheel 6 rotates its blade from the gassing chamber, and the reflector installs the drilling fluid due to centrifugal on the motor shaft between the demolishing forces on the chamber walls 7. At the blows of the degassing and pressure chambers ,

About the walls of the degassing chamber 7 gaseous while the screw is located in the nozzle

bubbles burst. Selected gas supply pressure chamber.

phase through pipe 12 is diverted from the camera

7 for analysis. The degassed drilling fluid is discharged through the pipe 8.

The supply of the degasser with a pressure chamber, as well as the installation of the auger and the deflector, allows you to stably maintain the flow rate of the drilling fluid through the degassing chamber, regardless of the change in the density of the drilling fluid, which can vary during operation from 1.0 to 2.5 kg / cm and also from screw performance. Stabilizing the degassing process improves the accuracy of analyzing the gas phase in the drilling fluid, reducing the density of the drilling fluid to the formula of the invention. Screw degasser containing a motor, on the shaft of which a screw is attached

Claims (1)

Claim A screw degasser containing a motor, on the shaft of which a screw and a vane wheel are mounted, installed in a degassing chamber equipped with a receiving and drain nozzles, as well as a branch pipe for venting a gaseous medium, characterized in that, in order to stabilize the work of the degasser, it is equipped with a pressure chamber with a supply pipe located concentrically outside the degassing chamber, and a reflector mounted on the motor shaft between the days of the degassing and pressure chambers, while the screw is located in the pressure supply pipe th camera.