Fast evaluation of inhibitors for calcium carbonate scale based on pH continuous measurements in jar test at high salinity condition

Sousa, Maria F.B.; Signorelli, Filipe; Bertran, Celso Aparecido

doi:10.1016/j.petrol.2016.09.007

Cited by 39 publications

(22 citation statements)

References 27 publications

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“…The supernatants are analyzed after the definite time intervals, and the inhibitor's effectiveness is determined by its ability to retain scaling ions in solution compared to untreated brines. Many methods have been employed for analyzing ions in the supernatants: titrimetric, spectrometry, calorimetric, electrical conductivity (Azizi et al 2018), light scattering (Sousa and Bertran 2014), pH measurement techniques (Sousa et al 2016) and the like. Concurrently, a considerable number of protocols is known for carrying out the static bottle test.…”

Section: Scale Precipitation Testsmentioning

confidence: 99%

State of the art of synthetic threshold scale inhibitors for mineral scaling in the petroleum industry: a review

2019

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Inorganic scale deposits are a major water-related problem encountered in producing oil and gas wells. The harshness of scale deposits is dependent on the field operating conditions. Scale deposits can vary from mild scaling tendencies to extreme. In general, the scale deposit will cause a reduction in formation pores, declining productivity and eventually blockage of the wellbore and hence unexpected downtime if it is allowed to persevere. To overcome this, the productivity of an oil and gas well is ensured by handling scale deposits via removal or prevention methods. Scale prevention is the best and cost-effective method for handling scale deposits that ensures production continuity. Inhibition through "threshold" scale inhibitor treatment is the most common method that is proven to prevent or reduce likely deposits. This paper examines the art of synthetic scale inhibitors, in particular, threshold scale inhibitors in oil and gas production. It discusses the chemistry of those inhibitors, inhibition mechanisms, treatment methods and key properties for their applications. It also highlights the chemistry of the synthetic routes often used to produce them in the laboratory and/or industry. Finally, it highlights the environmental concerns for the applicability of threshold scale inhibitors.

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Section: Scale Precipitation Testsmentioning

confidence: 99%

State of the art of synthetic threshold scale inhibitors for mineral scaling in the petroleum industry: a review

2019

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“…The calcite scaling therefore can be quantified by measuring the decrease in pHvalue (Zhang et al 2012;Sousa et al 2016). The measurement of the pH-values was realized by applying a HPHT solid phase pH-sensor.…”

Section: Inhibitor Effectivitymentioning

confidence: 99%

Evaluating efficiency and stability of calcite scaling inhibitors at high pressure and high temperature in laboratory scale

2018

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“…Therefore sodium hexametaphosphate (HMPT) as well as antiscalants based on phosphonic acid are used widely at RO water treatment facilities. Among them the organophosphonates are dominating the global market [6][7][8][9]. They are readily soluble in water, non-toxic and effective at low treatment concentrations [10].…”

Section: Introductionmentioning

confidence: 99%

Study of various organophosphonate additives as calcium carbonate inhibitors for reverse osmosis

Andrianov

Govorova

2019

E3S Web Conf.

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Various chemical additives are used in water treatment industry, among them – precipitation inhibitors for reverse osmosis membrane facilities. The development and synthesis of new inhibitor formulas and the study of their effectiveness is still an urgent task for many researchers working in this field. The relationship between the structure of phosphonate scale inhibitors and their effectiveness in preventing of calcium carbonate precipitation was studied. Two classes of tetraphosphonate and diphosphonate inhibitors that possess systematic structural similarities and differences have been tested on the laboratory membrane unit. All chemicals were tested at doses of 1 and 5 mg/L. The results showed that the antiscalant efficiency for both groups of inhibitors increases with elongation of methylene chain, but the longest compounds have a sharp drop in inhibition efficiency.

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Fast evaluation of inhibitors for calcium carbonate scale based on pH continuous measurements in jar test at high salinity condition

Cited by 39 publications

References 27 publications

State of the art of synthetic threshold scale inhibitors for mineral scaling in the petroleum industry: a review

State of the art of synthetic threshold scale inhibitors for mineral scaling in the petroleum industry: a review

Evaluating efficiency and stability of calcite scaling inhibitors at high pressure and high temperature in laboratory scale

Study of various organophosphonate additives as calcium carbonate inhibitors for reverse osmosis

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