Evaluation of Scale Inhibitors in Marcellus High-Iron Waters
The Marcellus waters of Pennsylvania and West Virginia commonly contain elevated levels of calcium, barium, and iron. Theoretical analyses of these waters indicate a propensity toward the formation of calcium carbonate, barium sulfate, strontium sulfate, and iron-related scales. The high level of dissolved iron commonly present in the water adversely affects the ability of the scale inhibitor to inhibit calcium carbonate scale. In this study, the inhibition performance of two new chemicals and some commercial products was evaluated under static and dynamic test conditions using synthetic Marcellus waters at varying iron concentrations. It was shown that both new chemicals were able to control calcium carbonate scale effectively in the presence of dissolved iron up to 200 ppm, whereas the performance of polycarboxylic acid, amino tri(methylene phosphonic) acid, and carboxymethyl inulin dropped sharply even in the presence of small amounts of Fe2+ (5 ppm). The inclusion of iron-sequestering agents with these chemicals and the effect of iron upon calcium sulfate inhibition are also discussed in this paper.
Mineral-scale formation is a problems for oil and gas operations that can result in the deterioration of assets, increased lifting costs, and lot production. Common mineral scales such as calcium carbonate, calcium sulfate, or barium sulfate can precipitate from produced water and create blockages in perforations, production tubulars, and equipment. The most common method of scale control is the use of low concentrations of specialty chemicals (inhibitors) that catalytically prevent the precipitation of solids. These chemical inhibitors are referred to as “threshold” inhibitors because they prevent scale formation at concentrations that are typically required with acid or chelate addition.
Southern Delaware Basin Water Infrastructure Transaction Terminated
Centennial said in its 10-Q report for Q1 that the economic downturn increased the likelihood that the transaction would fail to close by its original timeline.
Oil Prices Plague Oilfield Water Management Market
Sourcing water, flowback water services threatened as D&Cs decline.
US Onshore Produced Water To Drop Nearly 20 Billion bbl by 2022
Cutbacks in oil and gas production and drilling and completions will result in a decrease in produced water and will also lead to a reduction in water infrastructure investment.
Don't miss out on the latest technology delivered to your email every two weeks. Sign up for the OGF newsletter. If you are not logged in, you will receive a confirmation email that you will need to click on to confirm you want to receive the newsletter.