Iron Phosphonate Stabilized Emulsion And Formation Damage During An Adsorption Squeeze Treatment For Scale Mitigation

Lynn, J.D.; Nasr-El-Din, H.A.; Hashem, M.K.

doi:10.2523/73718-ms

Cited by 5 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The objective of this period is to make sure that there is no significant amount of iron in the critical near wellbore area. 1 It is well known that phosphonate-based inhibitors precipitate in the presence of iron and can cause formation damage. Moreover, these steps are costly, and there is potential cost saving if the two treatments are combined into a single treatment.…”

Section: Spe 87454mentioning

confidence: 99%

“…The following key performance criteria were considered when selecting the optimum scale inhibitor: (1) No change in the appearance or the rheology of the acid system, (2) Minimal precipitation upon mixing with the acid or materials present in the wellbore, typically ferric iron or calcite scale, (3) No effect on the reaction kinetics or corrosivity of the acid solutions, and (4) Minimal loss in the performance of the inhibitor itself when mixed in the acid.…”

Section: Screening Various Inhibitorsmentioning

confidence: 99%

“…Calcium carbonate scale forms in the top 1,000 ft of the two carbonate reservoirs (B and G), [2][3][4] while forming downhole in the sandstone reservoir (H). [5][6][7] CaCO 3 scale formation in the producing wells can be represented by Equation 1.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Single-Stage Acid Treatment to Remove and Mitigate Calcium Carbonate Scale in Sandstone and Carbonate Reservoirs

Nasr-El-Din¹,

Al-Saiari²,

Al-Hajji³

et al. 2004

Proceedings of SPE International Symposium on Oilfield Scale

Self Cite

View full text Add to dashboard Cite

Combining scale inhibition with matrix stimulation in a single treatment has always been a challenge due to potential formation damage. This concern has been historically prominent in carbonate reservoirs, due to the accelerated precipitation of the scale inhibitor at very low pH values. Earlier experience in combining acid stimulation with scale inhibition in carbonate reservoirs has been reported with limited success.This paper presents recent development in combining acid stimulation and scale inhibition treatments in sandstone and carbonate reservoirs. The combined treatment utilizes a newly developed scale inhibitor (a polymer-based inhibitor) that offers full compatibility with a wide range of the commercially available acidizing systems, including hydrochloric acid, mud acids and chelating agents.This treatment minimizes the number of well interventions, significantly reduces well maintenance cost and improves the work-over efficiency. At least one scale inhibitor squeeze treatment is eliminated with every acid stimulation treatment. In addition, there are other inherent advantages including: effective inhibitor placement and better coverage of the target zone.

show abstract

Section: Spe 87454mentioning

confidence: 99%

Section: Screening Various Inhibitorsmentioning

confidence: 99%

See 1 more Smart Citation

A Single-Stage Acid Treatment to Remove and Mitigate Calcium Carbonate Scale in Sandstone and Carbonate Reservoirs

Nasr-El-Din¹,

Al-Saiari²,

Al-Hajji³

et al. 2004

Proceedings of SPE International Symposium on Oilfield Scale

Self Cite

View full text Add to dashboard Cite

show abstract

Scale Inhibitor Squeeze Treatments

Vazquez

2023

Modelling Oilfield Scale Squeeze Treatments

View full text Add to dashboard Cite

A Systematic Investigation into the Effect of Mutual Solvent Pre-Flushes on Scale Inhibitor Retention and Return

Singleton,

Davis

2024

Day 2 Thu, June 06, 2024

View full text Add to dashboard Cite

Mutual solvents (MS) have been extensively applied prior to the main scale inhibitor (SI) treatment slug of squeeze treatments. Evidence from the field indicates that MS pre-flushes are beneficial, however, no systematic evaluation of their role has been performed. A series of core floods have been undertaken to elucidate the predominant mechanism that leads to these beneficial effects. Factors investigated included; presence/absence of an oil phase, type of oil phase present (mineral/crude oil), and core wettability (oil/water-wet). The objective was to investigate the impact of a specific mutual solvent (EGMBE) on the retention of DETPMP in cores that had been pre-flushed with MS prior to the main treatment and compare them to the corresponding core flood where no MS pre-flush had been applied ("No MS" case). In all the core floods, scale inhibitor injection and return profiles were evaluated and compared. Saturation changes throughout each flood were also monitored. In all the water-wet cases, the return profiles for the flood with MS as a pre-flush were seen to be comparable to the "No MS" case; the mutual solvent showed no obvious improvement in SI adsorption and its return in the long post flush tail. However, it was found that applying a MS pre-flush to an oil-wet core significantly enhanced squeeze lifetime in comparison to its "No MS" counterpart. The mutual solvent phase behaviour was also consistent with that for the water-wet cases, with it breaking through earlier than expected due to the presence of a residual mutual solvent phase that is stripped from the core throughout the injection stage. A repeat experiment using the same materials did not show the expected improvement in SI return, however, examination of the crude oil used, indicated that it had changed significantly from the first experiments such that comparison to the initial "No MS" case was invalid – a different wetting state was achieved. It is still our belief that the predominant mechanism by which MS beneficially enhances Squeeze lifetimes is through a wetting change from oil-wet to a more water-wet state, however further work is required to confirm this hypothesis.

show abstract

Iron Phosphonate Stabilized Emulsion And Formation Damage During An Adsorption Squeeze Treatment For Scale Mitigation

Cited by 5 publications

References 4 publications

A Single-Stage Acid Treatment to Remove and Mitigate Calcium Carbonate Scale in Sandstone and Carbonate Reservoirs

A Single-Stage Acid Treatment to Remove and Mitigate Calcium Carbonate Scale in Sandstone and Carbonate Reservoirs

Scale Inhibitor Squeeze Treatments

A Systematic Investigation into the Effect of Mutual Solvent Pre-Flushes on Scale Inhibitor Retention and Return

Contact Info

Product

Resources

About