Synthesis and evaluation of Jatropha oil-based emulsified acids for matrix acidizing of carbonate rocks

Yousufi, Muhammad Mohsin; Elhaj, Mysara Eissa Mohyaldinn; Moniruzzaman, Muhammad; Ayoub, Mohammed Abdalla; Nazri, Amir Badzly Mohd; Husin, Hazlina; Saaid, Ismail Bin Mohd

doi:10.1007/s13202-018-0530-8

Cited by 18 publications

(24 citation statements)

References 45 publications

(43 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The proppant would suspend quickly in the fracturing fluid if the sand suspension ability is weak. Because the dynamic sand suspension test is quite complicated [ 65 , 66 ], the static testing method was applied in this study (see Figure 5 ). The tests were carried out with different VES-fluids under (30

C) and (90

C).…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation and Performance Evaluation of Modified Viscoelastic Surfactant (VES) as a New Thickening Fracturing Fluid

et al. 2020

View full text Add to dashboard Cite

In hydraulic fracturing, fracturing fluids are used to create fractures in a hydrocarbon reservoir throughout transported proppant into the fractures. The application of many fields proves that conventional fracturing fluid has the disadvantages of residue(s), which causes serious clogging of the reservoir’s formations and, thus, leads to reduce the permeability in these hydrocarbon reservoirs. The development of clean (and cost-effective) fracturing fluid is a main driver of the hydraulic fracturing process. Presently, viscoelastic surfactant (VES)-fluid is one of the most widely used fracturing fluids in the hydraulic fracturing development of unconventional reservoirs, due to its non-residue(s) characteristics. However, conventional single-chain VES-fluid has a low temperature and shear resistance. In this study, two modified VES-fluid are developed as new thickening fracturing fluids, which consist of more single-chain coupled by hydrotropes (i.e., ionic organic salts) through non-covalent interaction. This new development is achieved by the formulation of mixing long chain cationic surfactant cetyltrimethylammonium bromide (CTAB) with organic acids, which are citric acid (CA) and maleic acid (MA) at a molar ratio of (3:1) and (2:1), respectively. As an innovative approach CTAB and CA are combined to obtain a solution (i.e., CTAB-based VES-fluid) with optimal properties for fracturing and this behaviour of the CTAB-based VES-fluid is experimentally corroborated. A rheometer was used to evaluate the visco-elasticity and shear rate & temperature resistance, while sand-carrying suspension capability was investigated by measuring the settling velocity of the transported proppant in the fluid. Moreover, the gel breaking capability was investigated by determining the viscosity of broken VES-fluid after mixing with ethanol, and the degree of core damage (i.e., permeability performance) caused by VES-fluid was evaluated while using core-flooding test. The experimental results show that, at pH-value ( 6.17 ), 30 (mM) VES-fluid (i.e., CTAB-CA) possesses the highest visco-elasticity as the apparent viscosity at zero shear-rate reached nearly to 10 6 (mPa·s). Moreover, the apparent viscosity of the 30 (mM) CTAB-CA VES-fluid remains 60 (mPa·s) at (90 ∘ C) and 170 (s − 1 ) after shearing for 2-h, indicating that CTAB-CA fluid has excellent temperature and shear resistance. Furthermore, excellent sand suspension and gel breaking ability of 30 (mM) CTAB-CA VES-fluid at 90 ( ∘ C) was shown; as the sand suspension velocity is 1.67 (mm/s) and complete gel breaking was achieved within 2 h after mixing with the ethanol at the ratio of 10:1. The core flooding experiments indicate that the core damage rate caused by the CTAB-CA VES-fluid is ( 7.99 % ), which indicate that it does not cause much damage. Based on the experimental results, it is expected that CTAB-CA VES-fluid under high-temperature will make the proposed new VES-fluid an attractive thickening fracturing fluid.

show abstract

C) and (90

C).…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation and Performance Evaluation of Modified Viscoelastic Surfactant (VES) as a New Thickening Fracturing Fluid

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Matrix acidizing is a well stimulation technique used to eliminate formation damage and/or increase permeability in sandstone and carbonate reservoir. This eventually leads to the improvement of the reservoir inflow performance, which will turn in enhancing wells productivity [56]. Matrix acidizing is performed by injecting acid solution with a prescribed concentration into the formation from surface.…”

Section: Emulsion and Microemulsion Applications In Well Stimulationmentioning

confidence: 99%

“…Assessment of emulsified acid retarding efficiency (acid solubility test): the acid solubility test is conducted to measure the amount of rock soluble by using the emulsified acid. Mohsin and his co-workers [56] conducted acid solubility test for an Indiana Limestone core sample in hydrochloric acid oil emulsified acid at ambient and 70°C. Approximately 1 g powder of the rock placed in a volume of 150 cc of the emulsified acid for a period of 60 min without stirring at the desired temperature.…”

Section: Emulsion and Microemulsion Applications In Well Stimulationmentioning

confidence: 99%

“…A core sample from the stimulated rock is placed inside the core holder of the core flooding lab and the reservoir condition can be simulated by setting the pressure and temperature of the core flooding lab at values similar to the real conditions of the reservoir. The core flooding equipment FES 350 has been used by Mohsin and his co-workers [56] to investigate the stimulation efficiency of the diesel-based and Jatropha-based emulsified fluids described in Table 2 at a temperature of 7°C, a back pressure of 700 psi, confining pressure of 1300 psi, and injection rate of 0.5 cc/min. Two carbonate cores, shown in Figure 8, were immersed first with brine to determine permeability of the core by recording the differential pressure points using Darcy's law, as the fluid moves across the core.…”

Section: Assessment Of Stimulation Efficiencymentioning

confidence: 99%

“…Figure 9.Filtrate from Jatropha oil-based emulsion (on left side) and filtrate from diesel oil-based emulsion (on right side)[56].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Application of Emulsions and Microemulsions in Enhanced Oil Recovery and Well Stimulation

Mohyaldinn¹,

Hassan²,

Ayoub³

2019

Microemulsion - A Chemical Nanoreactor [Working Title]

View full text Add to dashboard Cite

Hydrocarbons are produced and transported in a form of mixtures containing oil, gas, and water plus organic and inorganic contaminants. The flow presence of these contaminants (emulsifiers) with the continuous agitation from reservoirs up to surface facilities leads to formation of tight emulsions that need to be dealt with carefully to treat and process them adequately. Emulsions, in the other hand, are sometimes intentionally formed for using in enhanced oil recovery (EOR) and well stimulation. In EOR, emulsions are formed and injected into the reservoirs for the objective of improving both the microscopic displacement efficiency and the macroscopic sweep efficiency, which leads to higher recovery factor. In well stimulation emulsified acids are used during matrix acidizing and acid fracturing to retard acid reaction with rocks, to generate deeper penetration inside the reservoir. Microemulsion is a form of emulsion with less droplet size, and hence higher stability, that occasionally used during EOR and hydraulic fracturing to further improve the reservoir recovery and well production rate. This chapter discusses the application of emulsions and microemulsions in petroleum industry. The chapter discusses emulsions, microemulsions, emulsification processes, application of emulsions and microemulsions in enhanced oil recovery and well stimulations, and ended with conclusions.

show abstract

Carbonate matrix stimulation

Ziauddin

2022

Fluid Chemistry, Drilling and Completion

View full text Add to dashboard Cite

Synthesis and evaluation of Jatropha oil-based emulsified acids for matrix acidizing of carbonate rocks

Cited by 18 publications

References 45 publications

Experimental Investigation and Performance Evaluation of Modified Viscoelastic Surfactant (VES) as a New Thickening Fracturing Fluid

Experimental Investigation and Performance Evaluation of Modified Viscoelastic Surfactant (VES) as a New Thickening Fracturing Fluid

Application of Emulsions and Microemulsions in Enhanced Oil Recovery and Well Stimulation

Carbonate matrix stimulation

Contact Info

Product

Resources

About