Developments in oilfield scale handling towards green technology-A review

Kumar, S Sathish; Naiya, Tarun Kumar; Kumar, T. Santhosh

doi:10.1016/j.petrol.2018.05.068

Cited by 80 publications

(93 citation statements)

References 63 publications

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“…The term "squeeze treatment" usually means any treatment of an unfractured producing well performed by injecting a chemical inhibitor (i.e., corrosion or scale inhibitor) into the wellbore of the producing well to place the inhibitor into the formation. In a "squeeze treatment," a scale inhibitor solution whose concentration is normally between 2.5% and 20% by weight Kumar et al 2018) is forced (hence the "squeeze" name) into the formation through a producer well hole after a pre-flush. The squeezing process usually includes over-flushing the treated zone with water.…”

Section: Squeeze Treatmentmentioning

confidence: 99%

“…A large amount of the chemical is needed for successful inhibition as they function in a stoichiometric manner. Thus, they are usually applied in the field as chemical dissolvers for removing mineral scale deposits (Kumar et al 2018;Olajire 2015).…”

Section: Chelants (Sequestrants)mentioning

confidence: 99%

“…The chemical inhibitors that function in this mode are termed as nucleation inhibitors. Organic polymers and phosphinopolycarboxylic acid (PPCA) scale inhibitors usually function in this mode (Kumar et al 2018;Zhang et al 2016b).…”

Section: Threshold Scale Inhibitorsmentioning

confidence: 99%

“…For example, organic polymers and phosphonate inhibitors can be blended together to offer synergistic behavior (Shaw and Sorbie 2014). The reason for the resulted synergistic behavior is predicted to be that different inhibitor classes act via different mechanisms; thus, the combination of these mechanisms results in better inhibition (Kumar et al 2018;Shaw and Sorbie 2014). Shaw and Sorbie (Shaw and Sorbie 2014) researched synergetic properties due to blends of phosphonate and polymeric scale inhibitors.…”

Section: Blending Scale Inhibitorsmentioning

confidence: 99%

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

Mpelwa

Tang

2019

Pet. Sci.

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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: Squeeze Treatmentmentioning

confidence: 99%

Section: Chelants (Sequestrants)mentioning

confidence: 99%

Section: Threshold Scale Inhibitorsmentioning

confidence: 99%

Section: Blending Scale Inhibitorsmentioning

confidence: 99%

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

Mpelwa

Tang

2019

Pet. Sci.

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“…In off-shore oil production, the combination of temperature and pressure changes and the mixing of aquifer and sea water commonly result in barium sulfate as a scale product. [1][2][3][4] A great deal of effort has been invested to devise strategies for either removing or avoiding the formation of scale. [3][4][5][6][7] One mode of tackling barium sulfate scale is to use an organic additive so that crystallization is inhibited to such a degree that the scale does not form.…”

Section: Introductionmentioning

confidence: 99%

Can macrocyclic phosphonate molecules inhibit barium sulfate crystallization?

et al. 2019

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Crystallization in Confinement

2020

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Many crystallization processes of great importance, including frost heave, biomineralization, the synthesis of nanomaterials, and scale formation, occur in small volumes rather than bulk solution. Here, the influence of confinement on crystallization processes is described, drawing together information from fields as diverse as bioinspired mineralization, templating, pharmaceuticals, colloidal crystallization, and geochemistry. Experiments are principally conducted within confining systems that offer well‐defined environments, varying from droplets in microfluidic devices, to cylindrical pores in filtration membranes, to nanoporous glasses and carbon nanotubes. Dramatic effects are observed, including a stabilization of metastable polymorphs, a depression of freezing points, and the formation of crystals with preferred orientations, modified morphologies, and even structures not seen in bulk. Confinement is also shown to influence crystallization processes over length scales ranging from the atomic to hundreds of micrometers, and to originate from a wide range of mechanisms. The development of an enhanced understanding of the influence of confinement on crystal nucleation and growth will not only provide superior insight into crystallization processes in many real‐world environments, but will also enable this phenomenon to be used to control crystallization in applications including nanomaterial synthesis, heavy metal remediation, and the prevention of weathering.

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Developments in oilfield scale handling towards green technology-A review

Cited by 80 publications

References 63 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

Can macrocyclic phosphonate molecules inhibit barium sulfate crystallization?

Crystallization in Confinement

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