Determination of the total amount sulfur in petroleum fractions by capillary gas chromatography in combination with cold trapping and a total sulfur analyzer

Sung, N. J.; Johnson, Sherida

doi:10.1016/s0021-9673(00)96329-5

Cited by 11 publications

(2 citation statements)

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“…The problem of elemental sulfur deposition has been mainly covered in the areas of chemical engineering, gas processing, and chemical analysis (Sung and Johnson, 1989;Flowers, 1990;Aitani, 1993). The proposed treatments were chemical separation (Beskov et al, 1989) or biological and microbial treatments (Ruitenberg et al, 1999;Gasiorek, 1994).…”

Section: Introductionmentioning

confidence: 99%

Effect of Sulfur Deposition on Rock Permeability in Sour Gas Reservoir

Guo

Li³

2010

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Reduction in pressure and temperature generally reduces the solubility of sulfur in sour gas reservoir. Once the reservoir fluid has reached a sulfur-saturated state, further reduction in pressure and temperature will cause sulfur to deposit. Sulfur deposition in the formation, induced by a reduction in the solubility of the sulfur in the gas phase, may significantly reduce the inflow performance of sour gas wells and even wells have become completely plugged with sulfur in sour gas reservoir within several months. In this paper, effect of sulfur deposition on reservoir permeability in sour gas reservoir was investigated from a laboratory perspective. A series of displacement experiments were conducted using gas sample with H2S mole concentration of 14.99% and 24.69%, rock sample of permeability of 1.37, 3.6 and 46.5 millidarcy, different flow rates of 3.25 and 12.5cc/min, and average pore throat size in the range of 0.1 to 1.0 um. Experimental results indicated that the higher of hydrogen sulfide concentration have a severe effect on sulfur deposition and subsequently the rock permeability decreased rapidly. When element sulfur grain size is more than average pore throat size, rock permeability changed strongly. Through a regression analysis, variation of rock permeability (K vs. P) was linear relation under high pressure, while approximate exponential function under low pressure. This work will help engineers evaluate accurately well deliverability in sour gas reservoir.

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Section: Introductionmentioning

confidence: 99%

Effect of Sulfur Deposition on Rock Permeability in Sour Gas Reservoir

Guo

Li³

2010

All Days

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“…The problem of elemental sulfur deposition has been mainly covered in the areas of chemical engineering, gas processing, and chemical analysis [7][8][9][10] . The proposed treatments were chemical separation [11] or biological and microbial treatments [12][13] .…”

Section: Introductionmentioning

confidence: 99%

Laboratory and Simulation Investigation of Sulfur Deposition in Sour Gas Reservoir

X¹,

Du²,

Zhang³

et al. 2006

Proceedings of International Oil &Amp; Gas Conference and Exhibition in China

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractSulfur deposition in the formation, induced by a reduction in the solubility of the sulfur in the gas phase, may significantly reduce the inflow performance of sour gas wells and even wells have become completely plugged with sulfur in sour gas reservoir within several months. Accurate prediction and effective management of the sulfur deposition are crucial to the economic viability of sour gas reservoirs.In this paper, the influences of gas flow rate, initial hydrogen sulfide concentration and reservoir rock permeability on sulfur deposition in the core samples from X sour gas reservoir are investigated from a laboratory and simulation perspective. Displacement experiments were conducted using the gas sample with hydrogen sulfide concentration of 19 %. The gas sample were flooded through the actual carbonate core sample of permeability in the range of 0.85 to 20 millidarcy and under different flow rates of 0.82, 1.25 and 3.50 cc/min. In-situ sulfur deposited was measured using Scanning Electron Microscope (SEM) to provide the amount of sulfur deposited along the core samples. In addition, a three-dimensional, multi-component model was developed to evaluate the influences of gas flow rate, initial hydrogen sulfide concentration and reservoir rock permeability on sulfur deposition.The results indicated that the higher of gas flow rate can reduce the deposition of sulfur, while the higher of hydrogen sulfide concentration have a severe effect on sulfur deposition in sour gas reservoir. In addition, the depositional rate is accelerated rapidly as the rock permeability decreases. This work can help predict exactly the permeability damage rate as a function of flow rate, or initial rock permeability and production performance during the development of sour gas reservoir.

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Determination of the boiling point distribution of sulfur compounds in light cycle oil using GC with a flame photometric detector and pyrolyzer

Sung

Johnson

Parrott

1994

J. High Resol. Chromatogr.

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A method has been developed to determine the boiling point distribution of sulfur compounds in light cycle oils (LCO'S). The method chosen for this analysis was GC with a flame photometric detector (FPD) and pyrolyzer. Tests were carried out to evaluate the recovery efficiency, repeatability, and accuracy of the method. Repeatabilities within 2% were obtained. The recovery of benzothiophenes and dibenzothiophenes was close to 100%; this was important because these are the major sulfur components in LCO's. No hydrocarbon or solvent interferences were observed Gith the use of the pyrolyzer, even for a 95% solvent level. Comparison with results from other techniques showed that the method accurately determined the levels of sulfur compounds in the LCO boiling point range.

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Determination of the total amount sulfur in petroleum fractions by capillary gas chromatography in combination with cold trapping and a total sulfur analyzer

Cited by 11 publications

References 11 publications

Effect of Sulfur Deposition on Rock Permeability in Sour Gas Reservoir

Effect of Sulfur Deposition on Rock Permeability in Sour Gas Reservoir

Laboratory and Simulation Investigation of Sulfur Deposition in Sour Gas Reservoir

Determination of the boiling point distribution of sulfur compounds in light cycle oil using GC with a flame photometric detector and pyrolyzer

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