Methods and apparatus for collecting debris and filtering fluid

Patent metadata

Field	Value
Publication number	US-10030485-B2
Application number	US-201514884577-A
Country	US
Kind code	B2
Filing date	Oct 15, 2015
Priority date	Oct 15, 2015
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A debris removal apparatus includes a housing. The housing has a chamber located therein. The chamber has at least one closed end. The debris removal apparatus can also include a first flow path. The first flow patch can be in communication with an opening in the first end of the housing. The first flow path can also have an exit, and a diverter can be located adjacent to the exit. A port can be located between the diverter and the exit of the first flow path. The port can be in fluid communication with the first flow path and the chamber. The chamber can be in communication with a second flow path, and a screen operatively positioned between the chamber and second flow path.

First claim

What is claimed is:

1. A debris removal apparatus to remove debris from wellbores, wherein the debris removal apparatus comprises:
a housing;
a chamber located within the housing, wherein the chamber has a closed end;
a first flow path in fluid communication with an opening in the first end of the housing;
a diverter adjacent an exit of the first flow path;
a port in fluid communication with the chamber, wherein the port is located between the diverter and the exit of the first flow path, wherein the port is in communication with the chamber;
a second flow path in communication with a second end of the housing, wherein the second flow path is in fluid communication with the chamber, wherein the second flow path and first flow path are parallel to one another, and wherein the flow in the second flow path and first flow path is towards the diverter, and wherein the flow in the second flow path bypass the diverter; and
a screen operatively positioned between the chamber and second flow path, wherein the screen is disposed about the second flow path, and wherein the screen is parallel to the first flow path and runs the length of the chamber.

2. The debris removal apparatus of claim 1 , wherein the housing is bifurcated, and wherein a lower portion of the housing is separated from the upper portion of the housing by an end of the chamber, and wherein the first flow path is in fluid communication with the lower portion, and wherein the exit of the first flow path, the second flow path, and the screen are located in the upper portion.

3. The debris removal apparatus of claim 2 , wherein the first flow path has a first portion located in the lower portion and a second portion at least partially located in the upper portion, and wherein there is a space between the first portion and second portion.

4. The debris removal apparatus of claim 1 , wherein the second flow path is in communication with a pump.

5. A system for removing debris from a wellbore, wherein the system comprises:
a pump; and
a debris removal apparatus, wherein the pump is connected with the debris removal apparatus, wherein the debris removal apparatus comprises:
a housing;
a chamber located within the housing, wherein the chamber has a closed end;
a first flow path in fluid communication with an opening in the first end of the housing;
a diverter adjacent an exit of the first flow path;
a port in fluid communication with the chamber, wherein the port is located between the diverter and the exit of the first flow path, wherein the port is in communication with the chamber;
a second flow path in communication with the pump, wherein the second flow path is in fluid communication with the chamber; and
a screen operatively positioned between the chamber and second flow path, wherein the screen is concentrically disposed about the first flow path and the second flow path, and wherein the screen runs from the closed end to proximate the diverter.

6. The debris removal apparatus of claim 5 , wherein the housing is bifurcated, and wherein a lower portion of the housing is separated from the upper portion of the housing by an end of the chamber, and wherein the first flow path is in fluid communication with the lower portion, and wherein the exit of the first flow path, the second flow path, and the screen are located in the upper portion.

7. The debris removal apparatus of claim 6 , wherein the first flow path has a first portion located in the lower portion and a second portion at least partially located in the upper portion, and wherein there is a space between the first portion and second portion.

8. The debris removal apparatus of claim 5 , wherein the second flow path is in communication with the pump.

9. A method of removing debris from a wellbore, wherein the method comprises:
flowing debris laden fluid into a first flow path located in a housing;
flowing the debris laden fluid from the first flow path to a closed chamber located in the housing; and
flowing the debris laden fluid from the chamber to a second flow path, wherein the debris laden fluid is filtered while flowing to the second flow path, forming clean fluid, wherein clean fluid flow and the debris laden fluid flow are parallel to one another.

10. The method of claim 9 , further comprising causing a velocity drop in the debris laden fluid in the chamber allowing large debris to drop out.

11. The method of claim 9 , further comprising providing a space between a first portion of the first flow path and a second portion of the first flow path, and wherein large debris falls out as the debris laden fluid flow from the first portion to the second portion.

12. The method of claim 11 , further comprising collecting large debris in a lower portion of the housing.

13. The method of claim 9 , further comprising exhausting the clean fluid back into the wellbore.

Assignees

• Schlumberger Technology Corp

Inventors

• Gourmelon Pierre-Olivier

Classifications

• E21B43/08 Primary

  Screens or liners {(expandable screens or liners E21B43/108)} · CPC title

• E21B37/00

  Methods or apparatus for cleaning boreholes or wells (E21B21/00 takes precedence) · CPC title

• E21B43/121

  Lifting well fluids (monitoring of down-hole pump systems E21B47/008) · CPC title

• E21B43/38

  in the well · CPC title

• E21B27/005 Primary

  Collecting means with a strainer · CPC title