Model study on the kinetics of oil field formation damage due to salt precipitation from injection

Moghadasi, Jamshid; Müller‐Steinhagen, Hans; Jamialahmadi, M.; Sharif, Adel O.

doi:10.1016/j.petrol.2004.02.014

Cited by 127 publications

(65 citation statements)

References 20 publications

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“…The saturation index (SI) is used to determine scale formation, and it is defined as the logarithm of scaling tendency that is obtained by the program. Positive values of SI indicate inorganic salt formation (Amiri et al, 2012;Moghadasi et al, 2003).…”

Section: Scale Formation and Predictionmentioning

confidence: 99%

“…Waterflooding is widely used as a secondary oil recovery method to increase oil production (Haghtalab et al, 2014;Moghadasi et al, 2003). As a result of this operation, inorganic salt precipitation occurs in different parts of the production system.…”

Section: Introductionmentioning

confidence: 99%

“…As a result of this operation, inorganic salt precipitation occurs in different parts of the production system. Precipitates accumulate in the pore channels of the reservoir rocks and reduce their permeability (Khormali et al, 2015;Moghadasi et al, 2004). In addition, salt is formed on the surface of production equipment and in pipeline systems (Senthilmurugan et al, 2011b).…”

Section: Introductionmentioning

confidence: 99%

“…The method facilitates the prediction of the possibility of salt formation in all parts of oil production systems. However, the assessment of water saturation is an approximate method (Kan & Tomson, 2012;Moghadasi et al, 2003).…”

mentioning

confidence: 99%

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Prediction and Inhibition of Inorganic Salt Formation under Static and Dynamic Conditions – Effect of Pressure, Temperature, and Mixing Ratio

Khormali¹,

Petrakov²,

Farmanzade³

2016

IJTech

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As a result of waterflooding, inorganic salt precipitation occurs in the different parts of an oil production system, thereby leading to damage of production equipment. Different parameters affect the kinetics of salt precipitation. Scale inhibitors are widely used to prevent inorganic salt formation. In this study, the effect of reservoir pressure, temperature, and mixing ratio of injection to formation water on calcium sulfate and barium sulfate precipitation was investigated. For this purpose, two different formation waters and one injection water were used. In addition, the effect of temperature and mixing ratio on inhibition performance was studied. Four different existing industrial scale inhibitors and one new scale inhibitor were used. The performance of the scale inhibitors was determined under static and dynamic conditions. Results of the study showed that calcium sulfate precipitation increased with an increase in temperature and a decrease in pressure. Barium sulfate precipitation was found to increase with a decrease in the temperature. The effect of pressure on barium sulfate formation was negligible. The developed scale inhibitor showed the highest performance for the prevention of calcium sulfate and barium sulfate formation. A change in temperature from 60°C to 120°C reduced the inhibitor performance by 3%. In the cases of calcium sulfate and barium sulfate, the minimum performance of the scale inhibitor was observed when the mixing ratios of injection to formation waters were 60:40 and 50:50, respectively.

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Section: Scale Formation and Predictionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Prediction and Inhibition of Inorganic Salt Formation under Static and Dynamic Conditions – Effect of Pressure, Temperature, and Mixing Ratio

Khormali¹,

Petrakov²,

Farmanzade³

2016

IJTech

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“…The main reasons for deposition of salts are the changing of pressure-temperature conditions in the process of production and the incompatibility of injection water and formation water. Salt precipitation can damage the formation by permeability reduction (Moghadasi et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Laboratory investigation of a new scale inhibitor for preventing calcium carbonate precipitation in oil reservoirs and production equipment

Khormali

Petrakov

2016

Pet. Sci.

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The formation of mineral scale is a complex problem during the oilfield operations. Scale inhibitors are widely used to prevent salt precipitation within reservoirs, in downhole equipment, and in production facilities. The scale inhibitors not only must have high effectiveness to prevent scale formation, but also have good adsorptiondesorption characteristics, which determine the operation duration of the scale inhibitors. This work is focused on the development of a new scale inhibitor for preventing calcium carbonate formation in three different synthetic formation waters. Scale inhibition efficiency, optical density of the solution, induction time of calcium carbonate formation, corrosion activity, and adsorption-desorption ability were investigated for the developed scale inhibitor. The optimum concentration of hydrochloric acid in the inhibitor was determined by surface tension measurement on the boundary layer between oil and the aqueous scale inhibitor solution. The results show that the optimum mass percentage of 5 % hydrochloric acid solution in the inhibitor was in the range of 8 % to 10 %. The new scale inhibitor had high efficiency at a concentration of 30 mg/L. The results indicate that the induction period for calcium carbonate nucleation in the presence of the new inhibitor was about 3.5 times longer than the value in the absence of the inhibitors. During the desorption process at reservoir conditions, the number of pore volumes injected into the carbonate core for the developed inhibitor was significantly greater than the volume of a tested industrial inhibitor, showing better adsorption/desorption capacity.

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Polymers Applications in Petroleum Production

Lucas

Spinelli

Khalil

2015

Encyclopedia of Polymer Science and Technology

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This article overviews the application of macromolecules in the various exploration and production operations of the petroleum industry. The main molecules utilized are presented as well as those with potential application in different functions, with a description of the operations in which they are used, their action mechanism and preliminary laboratory tests. Aspects related to the solubility of polymer additives are also covered since the polymers are used in liquid media (hydrophilic or hydrophobic), such that they have to be soluble to allow dispersal or suspension, depending on the action mechanism involved in each application. In the end, aspects of toxicity, economics, environmental impact, and occupational health and safety are discussed.

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Model study on the kinetics of oil field formation damage due to salt precipitation from injection

Cited by 127 publications

References 20 publications

Prediction and Inhibition of Inorganic Salt Formation under Static and Dynamic Conditions – Effect of Pressure, Temperature, and Mixing Ratio

Prediction and Inhibition of Inorganic Salt Formation under Static and Dynamic Conditions – Effect of Pressure, Temperature, and Mixing Ratio

Laboratory investigation of a new scale inhibitor for preventing calcium carbonate precipitation in oil reservoirs and production equipment

Polymers Applications in Petroleum Production

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