Evaluation of different polymeric scale inhibitors for oilfield application

Bisatto, Rubens; Picoli, Vanessa Martins; Petzhold, César Liberato

doi:10.1016/j.petrol.2022.110331

Cited by 26 publications

(2 citation statements)

References 19 publications

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“…(4) To prepare 40 mL of acid solution, the acid solution was slowly added into the beaker with scale sample powder, then the beaker was put into a 90 °C water bath to react for 2 h. (5) The reacted scale sample was filtered by the filter paper that has been weighed, and the filter paper and the scale sample powder were put into a dryer to dry, and the mass m 3 was weighed after cooling. (6) The rate of dissolution of the acid on the scale sample was determined using the weight loss method and calculated as shown in eq 3.…”

Section: Experiments On the Dissolution Ability Of Acid On Scale Samplesmentioning

confidence: 99%

“…The retarded acid is an important way for reservoir acidification and plugging removal. , Its main mechanism is to extend the fractures in the formation through acid dissolution, , dredge the seepage channel of rocks, , and dissolve the solid impurities in the formation , so as to restore or improve productivity. Over the years, many scholars have studied this technology.…”

Section: Introductionmentioning

confidence: 99%

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Laboratory Evaluation of a Low-Damage Authigenic Mud Acid System for Bai-823 Well Block

Ni,

Cao,

et al. 2023

ACS Omega

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Aiming at the problem of single and poor adaptability of Bai-823 plugging removal system, an authigenic mud acid system using methyl formate, ammonium chloride, and ammonium fluoride as raw materials is proposed, which can adapt to the temperature of 60–80 °C of the target reservoir and sandstone lithology. The acid-generating capacity of the authigenic acid system at different temperatures was evaluated. The results showed that the H + concentration remained at 3.35 mol/L after 180 min at 80 °C, which indicated that authigenic acid could generate acid continuously and thus be competent for acidizing and plugging removal of further wells. The corrosion rate of authigenic acid to N80 steel was further investigated. When 2 wt % SA1-3B corrosion inhibitor was used, the corrosion rate was only 0.15 g/(m 2 ·h). At the same time, the corrosion capacities of authigenic acid to rock core and scale samples were studied, which were 19.38 and 93.81%, respectively, indicating that the authigenic acid system realized pipeline and reservoir friendliness when it was able to effectively remove plugging. Finally, a core displacement experiment was carried out to simulate reservoir acidizing for plugging removal. The results showed that the core permeability increased from 1.00 to 1.63 after acidizing modification with authigenic acid. All of the above studies show that a kind of authigenic mud acid has been successfully prepared, and a new idea for the authigenic acid system has been proposed.

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Section: Experiments On the Dissolution Ability Of Acid On Scale Samplesmentioning

confidence: 99%