Debris removal apparatus with self cleaning filter assembly, well system, and method of use

A method for operating a downhole debris removal apparatus, comprising:

• providing a debris removal sub downhole, the debris removal sub including:
• an inner pipe positioned within a tubular;
• filtration member substantially encircling the inner pipe;
• and
• a cleaning assembly positioned radially about at least a portion of the filtration member, wherein the cleaning assembly is positioned at least partially within a debris collection chamber formed by the tubular;
• circulating fluid through the debris removal sub;
• and
• moving the cleaning assembly relative to the filtration member to dislodge particulate matter from the filtration member.

A well system, comprising:

• a wellbore extending into a subterranean formation;
• a conveyance located within the wellbore;
• a downhole debris removal apparatus positioned within the wellbore with the conveyance, the downhole debris removal apparatus including:
• an inner pipe positioned within a tubular;
• filtration member substantially encircling the inner pipe;
• and
• a cleaning assembly positioned radially about at least a portion of the filtration member, the cleaning assembly configured to move relative to the filtration member to dislodge particulate matter from the filtration member, wherein the cleaning assembly is positioned at least partially within a debris collection chamber formed by the tubular;
• and
• a power head coupled to the downhole debris removal apparatus, the power head operable to provide fluid circulation through the downhole debris removal apparatus.

A downhole debris removal apparatus, comprising:

• an inner pipe positioned within a tubular;
• a filtration member substantially encircling the inner pipe;
• a cleaning assembly positioned radially about at least a portion of the filtration member, the cleaning assembly configured to move relative to the filtration member to dislodge particulate matter from the filtration member, wherein the cleaning assembly is positioned at least partially within a debris collection chamber formed by the tubular;
• and
• a check valve positioned proximate a base plate, the check valve operable to be open during reverse flow and closed during normal flow.

A downhole debris removal apparatus, comprising:

• an inner pipe positioned within a tubular;
• a filtration member substantially encircling the inner pipe;
• a cleaning assembly positioned radially about at least a portion of the filtration member, the cleaning assembly configured to move relative to the filtration member to dislodge particulate matter from the filtration member, wherein the cleaning assembly is positioned at least partially within a debris collection chamber formed by the tubular;
• and
• a bypass assembly coupled to the inner pipe, the bypass assembly configured to open when a pressure differential between an exterior of the inner pipe and an interior of the inner pipe hits a predetermined value.

A downhole debris removal apparatus, comprising:

• an inner pipe positioned within a tubular;
• a filtration member substantially encircling the inner pipe;
• and
• a cleaning assembly positioned radially about at least a portion of the filtration member, the cleaning assembly configured to move relative to the filtration member to dislodge particulate matter from the filtration member, wherein the cleaning assembly is positioned at least partially within a debris collection chamber formed by the tubular, wherein the tubular, inner pipe, filtration member and cleaning assembly form at least a portion of a debris removal sub, and further including a debris collection sub and handling sub coupled to the debris removal sub.