Sacrificial anode assembly for a seal section of an electric submersible pump (ESP) assembly

A method of lifting fluid in a wellbore, comprising:

• running an electric submersible pump (ESP) assembly into the wellbore, wherein the ESP assembly comprises an electric motor, a pump assembly, and a seal section comprising sacrificial material suitable to attenuate the corrosive effect of H2S (hydrogen sulfide) fluid;
• providing electric power to the electric motor;
• actuating the pump assembly by the electric motor;
• lifting fluid in the wellbore by the pump assembly;
• and
• contacting a dielectric fluid mixed with wellbore fluid containing H2S (hydrogen sulfide) with the sacrificial material within the seal section, wherein the H2S (hydrogen sulfide) reacts with the sacrificial material, and wherein the sacrificial material comprises a monolithic sacrificial anode body that defines one or more lands and grooves.

A method of lifting fluid in a wellbore, comprising:

• running an electric submersible pump (ESP) assembly into the wellbore, wherein the ESP assembly comprises an electric motor, a pump assembly, and a seal section comprising sacrificial material suitable to attenuate the corrosive effect of H2S (hydrogen sulfide) fluid;
• providing electric power to the electric motor;
• actuating the pump assembly by the electric motor;
• lifting fluid in the wellbore by the pump assembly;
• and
• contacting a dielectric fluid mixed with wellbore fluid containing H2S (hydrogen sulfide) with the sacrificial material within the seal section, wherein the H2S (hydrogen sulfide) reacts with the sacrificial material, wherein the sacrificial material comprises a plurality of nodules disposed within a fluid flow path within the seal section and the dielectric fluid mixed with wellbore fluid containing H2S (hydrogen sulfide) fluid flows through the flow path during the contacting, and wherein the plurality of nodules comprises nodules that are of a first size, nodules of a second size that are larger than the first size, and nodules of a third size that are larger than the second size.

A method of lifting fluid in a wellbore, comprising:

• running an electric submersible pump (ESP) assembly into the wellbore, wherein the ESP assembly comprises an electric motor, a pump assembly, and a seal section comprising sacrificial material suitable to attenuate the corrosive effect of H2S (hydrogen sulfide) fluid;
• providing electric power to the electric motor;
• actuating the pump assembly by the electric motor;
• lifting fluid in the wellbore by the pump assembly;
• and
• contacting a dielectric fluid mixed with wellbore fluid containing H2S (hydrogen sulfide) with the sacrificial material within the seal section, wherein the H2S (hydrogen sulfide) reacts with the sacrificial material, wherein the sacrificial material;
• sloughing a plurality of debris particles off the sacrificial material;
• and
• capturing the plurality of debris particles in a void area within the seal section.