Remediating Oilfield Deposition from the Laboratory Bench to the Field – Development of a Multifunctional Product

Abstract

Abstract In oil and gas production iron sulfide and/or inorganic scales can be problematic and can result in loss of production due to issues such as plugging, corrosion, flow restriction and emulsions. Efficient ways to handle the oil wet solids is a challenge. Scale inhibitors, THPS (Tetrakishydroxymethylphosphonium sulfate) or acids have historically been used for remediation purposes, but either they were found to be ineffective, or can lead to a variety of additional problems such as corrosivity or hydrogen sulfide generation upon use. The focus of this paper is on the laboratory development of a series of products that act as cleaners, corrosion inhibitors, iron sulfide dissolvers and scale inhibitors. The field deployment of one of these products is also summarized herein.