Effective Matrix Acidizing in High-Temperature Environments

Aboud, Ricardo; Smith, Kern; Pachon, Leandro Forero; Kalfayan, Leonard

doi:10.2523/109818-ms

Cited by 4 publications

(2 citation statements)

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“…However, this silica precipitates as hydrated colloid Al 2 Si 2 O 5 (OH) 4 and causes the reduction in rock permeability. These precipitation reactions may be avoided by following three stages of acidizing described by several researchers Gidley (1971), Kalfayan and Metcalf (2001), Aboud et al (2007) and Hill et al (1981). • Pre-flush stage is employed to dissolve any Na, K and Ca ions that may produce insoluble silicates when reacted with the silica.…”

Section: Acidizing Mechanismmentioning

confidence: 99%

“…Currently, the world demand for energy is increasing and (Aboud et al 2007) predicted that 40% more energy will be required in 2020 than in the present. To fulfill this demand, high-temperature reservoir acidizing is of paramount importance because the exploration of new reserves targeting much deeper and hotter reservoir (Al-Harthy et al 2008).…”

Section: Introductionmentioning

confidence: 99%

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Sandstone matrix acidizing knowledge and future development

Shafiq

Mahmud

2017

J Petrol Explor Prod Technol

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To meet rising global demands for energy, the oil and gas industry continuously strives to develop innovative oilfield technologies. With the development of new enhanced oil recovery techniques, sandstone acidizing has been significantly developed to contribute to the petroleum industry. Different acid combinations have been applied to the formation, which result in minimizing the near wellbore damage and improving the well productivity. A combination of hydrofluoric acid and hydrochloric acid (HF:HCl) known as mud acid has gained attractiveness in improving the porosity and permeability of the reservoir formation. However, high-temperature matrix acidizing is now growing since most of the wells nowadays become deeper and hotter temperature reservoirs, with a temperature higher than 200°F. As a result, mud acid becomes corrosive, forms precipitates and reacts rapidly, which causes early consumption of acid, hence becoming less efficient due to high pH value. However, different acids have been developed to combat these problems where studies on retarded mud acids, organic-HF acids, emulsified acids, chelating agents have shown their effectiveness at different conditions. These acids proved to be alternative to mud acid in sandstone acidizing, but the reaction mechanism and experimental analysis have not yet been investigated. The paper critically reviews the sandstone acidizing mechanism with different acids, problems occurred during the application of different acids and explores the reasons when matrix stimulation is successful over fracturing. This paper also explores the future developing requirement for matrix acidizing treatments and new experimental techniques that can be useful for further development, particularly in developing new acids and acidizing techniques, which would provide better results and information of topology, morphology and mineral dissolution and the challenges associated with implementing these ''new'' technologies.

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Section: Acidizing Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sandstone matrix acidizing knowledge and future development

Shafiq

Mahmud

2017

J Petrol Explor Prod Technol

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Corrosion behaviour of superaustenitic stainless steel N08029 in harsh acidizing environment

Ogunlakin,

Ankah,

Haruna

et al. 2024

Journal of Alloys and Metallurgical Systems

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Oil and Gas Expertise for Geothermal Exploitation: The Need for Technology Transfer

Falcone

Teodoriu

2008

Europec/Eage Conference and Exhibition

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Renewable energy is seen as the future source to meet the world's growing demand, with geothermal resources offering a constant and independent supply. Over the past century, the oil and gas sector has developed high level technologies for the exploitation of hydrocarbon reservoirs and this expertise should be directly transferrable to geothermal exploitation. In contrast to hydrocarbon developments, geothermal projects typically only become economic after decades of operation, which implies a long period of debt service before costs can be recovered from the sale of energy in the form of heat, electricity or a combination of both. Thus, the technology transfer between the petroleum and geothermal sectors has not been as efficient as initially hoped for. This paper begins with a review of the principles and uses of geothermal energy in today's sustainable energy scenario, from District Heating systems to the more recent Hot Dry Rock (HDR) concept. As exploiting HDR resources becomes more economic, the geothermal energy resources of countries like the U.S. could meet domestic demand for electricity for thousands of years. The challenges presented by HDR projects around the world are discussed, with a special focus on those aspects of geothermal exploitation that overlap with the oil and gas expertise, such as drilling and completions practices, the characterization of fluid flow through porous media and in wellbores and reservoir fracturing issues. The comparison shows how hydrocarbon exploration and production complements that of geothermal exploitation and identifies technical areas where future research efforts should be addressed to enhance the technology transfer between these energy sectors. Introduction Geothermal energy is a renewable source that becomes economically more attractive as the cost of conventional energy increases. The exploitation of geothermal resources incurs many of the technical challenges that are encountered in oil and gas exploration and production. Although the concept of technology transfer between these energy sectors is not new, there is still scope for improvement in the way this transfer is being done, with the aim to create more synergy between the two areas of technology application. In what follows, a review of conventional and frontier geothermal energy uses is presented, which highlights current and future technological needs, and shows how these overlap with the oil and gas industry. The source of geothermal heat The planet's internal heat, which was originally generated by accretion from the gravitational binding of energy, has continued to grow with the decay of naturally occurring radioactive elements. The earth's flow of heat from its interior to its surface is currently around 45 TW. The earth cools at an extremely slow rate: the mantle's temperature has decreased by 300–350°C in 3 billion years, and the core remains at approximately 4000°C. About 99% of the earth is hotter than 10000C and 99% of the remaining 1% is hotter than 1000C. Fig. 1 illustrates the trends of temperature in the earth.

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Effective Matrix Acidizing in High-Temperature Environments

Cited by 4 publications

References 0 publications

Sandstone matrix acidizing knowledge and future development

Sandstone matrix acidizing knowledge and future development

Corrosion behaviour of superaustenitic stainless steel N08029 in harsh acidizing environment

Oil and Gas Expertise for Geothermal Exploitation: The Need for Technology Transfer

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