New wellbore temperature control design for preventing failure and poor performance of logging tools in high pressure – high temperature wells

Odiete, William Ejuvweyerome

doi:10.1016/j.heliyon.2022.e09404

Cited by 4 publications

(4 citation statements)

References 9 publications

(5 reference statements)

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“…High temperatures in the wells have been reported as an operational problem in ISC projects in the Venezuelan highly viscous oil reservoirs. , The use of chemical additives and/or catalysts (i.e., copper stearate), despite accelerating crude oil oxidation by shifting both the LTO and HTO to lower temperatures at the laboratory scale, does not solve the issue of high temperatures. This issue could induce sand movement (high temperatures impact cementing materials − ), as well as mechanical failure of tubing and casing. For these reasons, well failure due to thermal stress is considered a key challenge in the ISC operations .…”

Section: Discussionmentioning

confidence: 99%

“…Monitoring flow line temperatures and casing pressure along with running temperature logs in injector wells 60 is critical to maintaining an efficient ISC process. Recent studies have shown the acceleration of research and development of materials together with technology for high-temperature conditions in the oil and gas, as well as geothermal fields, 50,[82][83][84][85]87,88 which would make it possible to develop materials and techniques better adapted to this type of complex environments.…”

Section: Discussionmentioning

confidence: 99%

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Workflow of the In Situ Combustion EOR Method in Venezuela: Challenges and Opportunities

Rodriguez¹,

Llamedo

Belhaj

et al. 2023

ACS Omega

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In situ combustion (ISC) is one of the oldest thermal enhanced oil recovery methods to have been applied in Venezuela to increase the production of highly viscous crude oils, with a first field application in 1959 in the Tia Juana Field-Lake Maracaibo Basin. This method, which is characterized by high energy efficiency, consists of injecting air into the reservoir where exothermic oxidation reactions initiate to increase the mobility of the oil. Compared to other thermal enhanced oil recovery methods such as steam injection, ISC has a lower environmental impact in terms of water and fuel consumption, and emission of gases as the produced gases can be reinjected or stored. Several ISC projects have been carried out in Venezuela in Tia Juana, Morichal, Miga, and Melones fields. Although the technical results have been satisfactory in terms of viscosity reduction and improved crude oil properties (such as °API), other important aspects of project evaluations have not been convincing due to the following factors: high temperatures in producing wells, acid gases management, generation of complex emulsions, corrosion, and high CAPEX and OPEX costs. Nevertheless, additional research work has been conducted on process optimization, using catalysts and hydrogen donors, to better address these other factors. Due to the great need to increase hydrocarbon production in Venezuela and to the advantages of ISC as an upgrading technique where low-carbon fuels and hydrogen as byproducts are generated, this paper presents a revisit of ISC projects in Venezuela from R&D technical aspects to field applications. It seeks to identify the main insights regarding the success and failure of the evaluated projects and make substantiated recommendations in the case of future applications of this technology.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Workflow of the In Situ Combustion EOR Method in Venezuela: Challenges and Opportunities

Rodriguez¹,

Llamedo

Belhaj

et al. 2023

ACS Omega

View full text Add to dashboard Cite

show abstract

“…3 During the logging process, as the detector descends to greater depths in the oil well, the temperature and pressure increase; thus, the detector must exhibit high thermal stability and resistance to pressure. 4 Although the use of suitable sealing and insulation materials for protection significantly reduces the impact of pressure on the detector, the temperature of the detector remains above 373 K, thus affecting the reliability of the detection results. 5 The performance of the detector depends on that of a scintillator, which is its core component.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Logging is useful for extracting a large amount of key geological information, such as porosity, permeability, and the extent of oil and gas saturation, which is highly significant for oil and gas exploration . During the logging process, as the detector descends to greater depths in the oil well, the temperature and pressure increase; thus, the detector must exhibit high thermal stability and resistance to pressure . Although the use of suitable sealing and insulation materials for protection significantly reduces the impact of pressure on the detector, the temperature of the detector remains above 373 K, thus affecting the reliability of the detection results .…”

Section: Introductionmentioning

confidence: 99%

High Thermal Stability of Copper-Based Perovskite Scintillators for High-Temperature X-ray Detection

Wang

Yao

Yan

et al. 2023

ACS Appl. Mater. Interfaces

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High-temperature scintillation detectors play a significant role in oil exploration. However, traditional scintillators have limited ability to meet the requirements of practical applications owing to their low thermal stability. In this study, we designed and developed a one-dimensional (1D) Cs 5 Cu 3 Cl 6 I 2 scintillator with high thermal stability. In addition, by preparing Cs 5 Cu 3 Cl 7 I, we proved that the Cs 5 Cu 3 Cl 6 I 2 scintillator exhibits high thermal stability because the bridges linking the structural units in the 1D chain structure are only formed by I − ions, which improve their structural rigidity. The scintillator has a high steady-state light yield (59,700 photons MeV −1 ) and exhibits the highest spatial resolution for powder-based scintillation screens (18 lp mm −1 ) after cyclic treatment within the temperature range of 298−423 K. The Cs 5 Cu 3 Cl 6 I 2 scintillator allows the visualization of alloy melting, indicating that it has significant potential for application in high-temperature environments. This study provides a new perspective toward the design of scintillators with high thermal stability.

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A hybrid thermal management system combining liquid cooling and phase change material for downhole electronics

Peng

Deng

Wei

et al. 2023

Journal of Energy Storage

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New wellbore temperature control design for preventing failure and poor performance of logging tools in high pressure – high temperature wells

Cited by 4 publications

References 9 publications

Workflow of the In Situ Combustion EOR Method in Venezuela: Challenges and Opportunities

Workflow of the In Situ Combustion EOR Method in Venezuela: Challenges and Opportunities

High Thermal Stability of Copper-Based Perovskite Scintillators for High-Temperature X-ray Detection

A hybrid thermal management system combining liquid cooling and phase change material for downhole electronics

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