barium sulfate inhibitor

One of the most common methods for preventing scale formation is through the use of scale inhibitor. This study was conducted to investigate the permeability reduction caused by deposition of barium sulfate in Malaysian sandstone and Berea cores from mixing of injected Malaysian seawaters (Angsi and Barton) and formation water that contained high concentration of barium ion at various ...

Oct 15, 2014· Barium sulfate is one of the most-difficult types of scale to inhibit in oil- and gas-production systems because of its physical hardness and its chemical and thermal stability. Barium sulfate is most commonly inhibited with either phosphonate or polymeric scale inhibitors (SIs) deployed at substoichiometric concentrations.

Oilfield scale inhibition is the process of preventing the formation of scale from blocking or hindering fluid flow through pipelines, valves, and pumps used in oil production and processing. Scale inhibitors (SIs) are a class of specialty chemicals that are used to slow or prevent scaling in water systems. Oilfield scaling is the precipitation and accumulation of insoluble crystals (salts ...

Jun 22, 2014· A potential polymeric scale inhibitor used for oilfield was synthesized by solution polymerization. The static inhibition rate on calcium carbonate, calcium sulfate, barium sulfate, and strontium sulfate can reach up to more than 95 %. The inhibition performance of the polymer on calcium fluoride was also evaluated. Effects including test temperature, NaCl concentration, pH value, and ...

comparison to traditional phosphonate based inhibitors • Control for common oilfield scales - including barium sulfate, strontium sulfate, calcium carbonate, calcium sulfate and silica. Staying on Top of Scale Build-Up ACCENT™ Scale Inhibitors are designed to reduce scale formation in complex, high temperature and pressure oilfield operations.

Additional experiments of DETPMP adsorption on barium sulfate reagent powder show that adsorption on barium sulfate continuously increases as temperature rises. This suggests that the adsorption level of DETPMP on barium sulfate surface may not be the key factor in the nucleation inhibition or crystal growth retardation of barium sulfate, when ...

Polyaspartic acid as a calcium sulfate and barium sulfate inhibitor. Generally all forms of polyaspartic acid can be used. β-polyaspartic acids are preferred.

Mar 26, 2000· The barium sulfate inhibition performances of DETPMP under aerated conditions and anaerobic conditions were then compared. This experimental study reveals that Fe(ll) did not result in reduction of the barium sulfate inhibition efficacy of DETPMP. On the contrary, it appeared to enhance the DETPMP performance. ...

Aug 01, 2018· Sequential laboratory injections in Campos Basin rocks of commercial cationic and anionic polyacrylamide and polyaluminum chloride (PAC) as cross-linking agent were employed prior to the injection of a commercial organophosphonic acid type inhibitor for barium sulfate scale.

Barium Sulfate Inhibition in the Presence of Poly(acrylic acids) - The Effect of Polymer Concentration and Molecular Weight. Inhibitor MW Concentration (ppm) BaSO 4 inhibition (%) None -- 0.0 0 PAA-1 800 1.0 19 PAA-1 800 2.0 58 PAA-1 800 2.0 55 PAA-1 800 2.0 60 PAA-1 800 3.0 78 ...

* Barium Sulfate Inhibition 0 10 20 30 40 50 60 70 80 90 100 n PCA Polymer Phosphonate ppm 2.5 ppm 5 ppm 7.5 ppm 10. Crystal Growth Blocking Example* *Barium sulfate inhibition PCA polymer outperforms phosphonate as a crystal growth blocker ∆ i) 0 Time in minutes 1 2 3 4ppm PCA Polymer

Cost effective, general purpose scale inhibitor, particularly effective in controlling barium sulfate and calcium carbonate scales Exhibits strong anodic properties, functioning as a corrosion inhibitor in oxygenated systems such as cooling towers and drilling fluids

Sep 04, 2020· The purpose of this study is to construct a scale inhibitor with high efficiency for calcium carbonate scale, calcium sulfate scale and barium sulfate scale. For this purpose, the ter-copolymer P(MA-AMPS-HPA) was synthesized by aqueous solution polymerization method using maleic anhydride (MA), 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and hydroxypropyl acrylate (HPA) as raw …

Apr 03, 1996· A semiempirical mathematical model has been developed to predict inhibitor efficiency for barium sulfate scale control in industrial processes. This model can be used for selecting effective inhibitors and determining the minimal effective concentration needed for a given system. The model incorporates experimental data of the nucleation and inhibition kinetics.

Tunisian inhibitors for calcium carbonate was examined for barium sulfate. The in situ conductivity and FTIR measurements allowed the identification of barium sulfate precipitation and the deposited barite in the presence of the inhibitor at various temperatures (25, 50°C).

increased inhibition of barium sulfate precipitation, two notable exceptions showed that a relatively high number of phosphonate groups does not guarantee inhibition while a relatively low number of phosphonate groups does not imply no inhibition. Increasing the pH showed an increased effect of additives on barium sulfate precipitation up to pH 8.

Polyaspartic acid as a calcium sulfate and a barium sulfate inhibitor Download PDF Info Publication number US5116513A. US5116513A US07/671,380 US67138091A US5116513A US 5116513 A US5116513 A US 5116513A US 67138091 A US67138091 A US 67138091A US 5116513 A US5116513 A US 5116513A Authority US United States Prior art keywords

Oct 12, 2021· (2) Test for Sulfate Ion ContentThe test of sulfate ions was carried out on the basis of the Test Code for Hydraulic Concrete (SL3522006) and the Solutions for Chemical Evaluation of Cement (GB/T 1762008) by suggests in the barium sulfate precipitation system.

deposition of barium sulfate on the substrate. Study of the formation and/or inhibition of barium sulfate scale according the literature is often carried out by simulating systems include the reservoirs and pumps [4,30]. In this study, the working electrodes are immersed in the mixture solution of injection water and formation water under static

Recalcitrant barium sulfate (BaSO 4) scale deposits are commonly encountered in industrial applications.They are hard to remove because of the pH-independence of their solubility. The formation of BaSO 4 from supersaturated solutions was studied in two series of experiments: (a) the first series was performed under conditions of high supersaturation to determine the domain of stability of the ...

Mar 12, 2011· Barium sulfate is one of the most difficult types of scale to inhibit in oil- and gas-production systems because of its physical hardness and its chemical and thermal stability [74 ]. Barium sulfate is most commonly inhibited with either phosphonate or polymeric scale inhibitors deployed at substoichiometric concentrations.

High-performance scale inhibitor used to prevent the buildup of both Carbonate and Sulfate salt scale deposits. NuFlo SIC-30 is a highly Calcium-tolerant, broad-spectrum, water-soluble salt scale inhibitor specially formulated to prevent the precipitation and deposition of Carbonate and Sulfate …

M-I SWACO scale inhibitors are applicable in most clear-brine completion fluid systems to deter calcium carbonate, calcium sulfate, and barium sulfate scaling. Products in this line include. SAFE-SCAVITE II phosphonate-base advanced calcium scale inhibitor—an organic acid that inhibits scaling and mitigates formation damage. It is soluble in ...

Jul 01, 2012· The action of scale inhibitors in preventing scale formation has been extensively investigated in the literature with different inhibitors. This work is conducted to test the efficiency of common commercial scale inhibitors (DETPMP and PPCA) and locally produced scale inhibitor (PBSI) in preventing or delaying barium sulfate scale which is formed by mixing of water injection (Barton …

Product E, although very good in barium sulfate inhibition, exhibits an unacceptable degree of insolubility for many applications in brine but could be used in other systems for its inhibition properties. Control products F and G, although very stable, exhibit inadequate inhibition performance.

bonate, calcium sulfate, or barium sulfate can precipitate from produced water and create blockages in perforations, production tu-bulars, 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

Mar 12, 2006· This paper presents the experimental results from static barium sulfate inhibition efficiency tests for three conventional SIs and 11 GSIs. The conventional SIs are DETPMP, PPCA and PVS; and the GSIs are two PPCA-type inhibitors, four polymeric species, three maleic acid inhibitors, a polyaspartate inhibitor and a carboxymethyl inulin.

Mar 16, 2018· Barium sulfate scale inhibition efficiency, NaCl, temperature and effect on inhibition efficiency were studied through static bottle test. Sodium chloride concentration affects the inhibition efficiency of the inhibitor on barium sulfate scales but the polymer shows good performance under high salinity conditions. 5.

Facing at the situation that a large amount of BaSO4/SrSO4, which seriously impacts on oil production operation scale, has been yielded during oilfield production, three kinds of scale inhibitor (TS-09, TH-60 and PBTCA) were collected from oilfield for comprehensive evaluation. The results show that the three kinds of scale inhibitor have certain scale inhibition effect to BaSO4/SrSO4, and the ...

More specifically, nucleation and growth of barium sulfate was studied in aqueous media, in water miscible solvent, monoethylene glycol (MEG) and in water - n-dodecane mixtures. The stability domain, the kinetics of spontaneous precipitation and the seeded crystal growth of barium sulfate were investigated in aqueous supersaturated solutions.