Baker Hughes Oilfield Operations LLC

Baker Hughes Corporation

Baker Hughes, a Ge Compnay, LLC

Tracey Jackson

Sunder Ramachandran

Zhengwei Liu

Richard Martin

Carlos M Menendez

Jonathan Raymond Stewart-Ayala

Johnathon L Brooks

Jonathan Stewart-Ayala

A method for inhibiting corrosion of metal surfaces, such as carbon steel tubing, that are in contact with a fluid, such as brine in an oil and gas production fluid containing acid gases (e.g., COand HS) is accomplished by introducing a corrosion-inhibiting blend of two components into the fluid, where blend is glycolipids and quaternized amines, glycolipids and phosphate-containing compounds, quaternized amines and imidazoline-like compounds, quaternized amines and phosphate-containing compounds, or combinations of these blends. Each of the two components of the blends are present in an amount effective to synergistically inhibiting the corrosion of the metal surface when used together.

Synergistic corrosion inhibitor blends

A method of preventing or mitigating corrosion on a metallic surface exposed to a supercritical fluid is disclosed. The method includes adding a corrosion inhibitor composition to a supercritical fluid comprising a supercritical carbon dioxide; and contacting the supercritical fluid with a metallic surface, wherein the corrosion inhibitor composition comprises a corrosion inhibitor that has a solubility of greater than 5,000 ppm in the supercritical fluid at 48.9&#xb0; C. and 2,200 psi.

Corrosion control for supercritical carbon dioxide fluids

Corrosion to a metal surface in contact with corrosion forming components within an aqueous-based fluid system may be decreased, prevented, and/or inhibited by contacting the metal surface(s) with apatite forming components and forming at least one apatite species on the surface with the apatite forming components. The apatite forming components may be or include phosphates, organophosphates and combinations thereof. In a non-limiting embodiment, the apatite forming components may further include fluorides, chlorides, calcium, and combinations thereof.

Decreasing corrosion on metal surfaces with apatite forming components

Two intermediates that have known separate efficacy for preventing scales such as calcium carbonate, magnesium carbonate and barite (barium sulfate) were discovered to have a synergistic effect for preventing or inhibiting silicate scaling when used together. Each of these intermediates is ineffective at preventing silicate scaling when used alone; however, when used in combination, they have a synergistic benefit. In one non-limiting embodiment the components include a polyamine phosphonate and a lysine tetra(alkylene)phosphonate.

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Sugar Land, TX, United States of America

Tracey Jackson