Optimization of miscible CO 2 EOR and storage using heuristic methods combined with capacitance/resistance and Gentil fractional flow models

Eshraghi, Seyed Ehsan; Rasaei, Mohammad Reza; Zendehboudi, Sohrab

doi:10.1016/j.jngse.2016.04.012

Cited by 57 publications

(24 citation statements)

References 60 publications

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“…Other facts which were provided in the works 12,13 proved that development of miscibility in gas cycling schemes may be achieved at pressures far below the dew-point pressure of the condensate by injection of CO 2 . The failure of lowmiscibility pressure obtained for injection of CO 2 in a retrograde condensate suggests that mature condensate carrying formations may be suitable targets for CO 2 sequestration offset by a possible increase in condensate recovery.…”

Section: Introductionmentioning

confidence: 97%

Effective “Vaporizer” for Recovering Retrograde Hydrocarbon Condensate from a Gas-Condensate Reservoir

Fataliyev¹

2017

IPCSE

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This paper investigates some fundamental aspects of a "vaporiser" for recovering trapped retrograde condensate in the formation that is formed during exploitation gascondensate reservoirs in depletion regime. The thermodynamic test of seven different gas-condensate systems and analysis of the liquid and gas phase's samples which were taken under the same thermobaric conditions was provided wide information about the occurrences in the reservoir fluids. It was identified that the solubility capability of gas mixture in the hydrocarbon condensate is elevated and improved as a "vaporiser" if it's critical temperature is increased but compressibility factor and critical pressure are decreased. It was determined that, improving the solubility of gas components in the condensate decreases the system fog up and retrograde condensation pressures and improves stability of aerosol condition of gas-condensate fluid. Therefore, injected gas for gas cycling or re-vaporization of condensate from the core can be controlled for the purpose of increasing its solubility.Keywords: gas-condensate, gas injection, fog up pressure, gas solubility, gas solubility, dissolved gas vaporization of heavy hydrocarbon ends and connate water, the reduction of the condensate/gas ratio and RDP pressure, etc. 12,15 Nevertheless, successful design and implementation of enhanced condensate recovery schemes require accurate prediction of the compositional effects that control the local vaporization/displacement efficiency. In line with these conclusions, and also results which were obtained in the earlier works 4,14,15 in this paper, we intended to find out a way of improving the effectiveness of "vaporiser" for the recovering trapped retrograde condensate in the formation, which is left after primary production. To this purpose, this paper performed an experimental investigation into this phenomenon as it is problematic during mathematical modelling. Investigation method and procedure Laboratory apparatusesExperiments were carried out on a УГК type of PVT bomb, which is a standard apparatus for determining thermodynamic characteristics and the phase behaviour of gas condensate systems. 1 The schematic diagram of the experimental laboratory apparatus and the purposes of the laboratory modules are presented in the Figure 1. The maximum working pressure of the PVT bomb is 45MPa, maximum working temperature is 80°C and cell volume is 3x10 -3 m 3 . As shown in the diagram Figure 1, the laboratory facility can be divided into 9 Modules: Figure 1 Schematic representation of laboratory apparatusModule 1: Module 1 is for handling natural gas from the bottle. It is equipped with Natural Gas Bottle-NGB, CO 2 Bottle-CB, Nitrogen Bottle-NB, Pressure Control Valve-PCV, Flow Meter-FM and normal Isolation Valve-IV. Sample Connection-SC allows the provision of sampling for composition analyses. This module can be linked very easily with Modules 3 and 5 by manifold (Module 9) for recombining gas mixture and gas-condensate system. Module 2:Module 2 is for han...

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Section: Introductionmentioning

confidence: 97%

Effective “Vaporizer” for Recovering Retrograde Hydrocarbon Condensate from a Gas-Condensate Reservoir

Fataliyev¹

2017

IPCSE

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“…Many related studies have successfully investigated the CO 2 flooding mechanism and CO 2 storage. CO 2 flooding can be divided into miscible, near‐miscible, and immiscible phases .…”

Section: Introductionmentioning

confidence: 99%

“…CO 2 flooding can be divided into miscible, near‐miscible, and immiscible phases . Among them, miscible phase flooding is significant for enhancing CO 2 sweep efficiency and oil recovery . Among the various types of possible CO 2 storage, CO 2 trapping mechanisms mainly consist of structure‐based, soluble, residual, and mineral trappings .…”

Section: Introductionmentioning

confidence: 99%

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Water–rock–CO₂ interactions and CO₂ storage of Honghe tight oil reservoirs: an experimental and simulation study

Yang

et al. 2019

Greenhouse Gases

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CO2 flooding is essential for significantly enhancing oil recoveries and long‐term CO2 storage. We performed CO2 flooding experiments on target tight cores obtained from Honghe oilfield to investigate the water–rock interaction during CO2 flooding. In addition, we investigate the impact of mineralization and CO2 injection patterns on the sweep efficiency and CO2 long‐term storage using numerical simulations. Results show target core samples are composed of calcite, quartz, Na‐feldspar, and K‐feldspar. In particular, the main water–rock interactions during CO2 flooding are calcite and Na‐feldspar dissolution. The impact of water–rock interactions on the reformation of the matrix is not significant. However, such water–rock interactions will decrease the permeability of the natural fracture system near injection wells, which will lead to the enhancement of CO2 flooding efficiency in fractured formations. In addition, results show that water alternating gas injection will enhance oil recovery and CO2 primary storage. After CO2 flooding, mineral‐trapped CO2 is only 0.53wt.% of the total CO2 storage. As the flooding time increases, the mineral‐trapped CO2 increases. Results show that mineral‐trapped CO2 is 31.08% of the total CO2 storage at the simulation time of 500 years. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…CRM has a wide range of uses in the petroleum industry. Its application consists of water flooding management and optimization, heterogeneity diagnosis, interwell connectivity determination, injection allocation optimization, gas storage, and natural fracture detection …”

Section: Introductionmentioning

confidence: 99%

On determination of interwell connectivity under immiscible gas injection process: Modified capacitance‐resistance model

et al. 2018

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Interwell connectivity is an important parameter in reservoir management and optimization during water/gas injection. As an analytical approach, the capacitance-resistance model (CRM) is a rapid tool that only needs some common and available data for field performance prediction. The nonlinear signal processing technique is used with the CRM to determine reservoir continuity between production and injection wells. Current CRMs are applicable in water flooding systems. In this study, a modified capacitance-resistance model (M-CRM) for interwell connectivity calculation in immiscible gas flooding projects is developed based on the mass balance equation. Slightly compressible flow is one of the main assumptions in CRM development while gas is compressible and the gas property variation with pressure should be scrutinized in the equations. Therefore, new equations need gas PVT properties to consider the effect of gas compressibility. Moreover, the productivity equation for oil and gas production should be revised. The constructed model that considers mass balance and the productivity equation is applied in two synthetic models and one real sector reservoir model. The genetic algorithm, as an optimization tool for solving the new model, is used and streamline simulation is selected as a validation tool for interwell connectivity parameter calculation. Based on the streamline results, it was observed that a M-CRM is able to predict the reservoir behaviour better than a common CRM for pre/post breakthrough conditions in gas injection scenarios. Also, an analysis is performed for different parameters that affect the new model in immiscible gas flooding. Results show that modification on the mass balance equation has a greater influence than the productivity equation.

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Optimization of miscible CO 2 EOR and storage using heuristic methods combined with capacitance/resistance and Gentil fractional flow models

Cited by 57 publications

References 60 publications

Effective “Vaporizer” for Recovering Retrograde Hydrocarbon Condensate from a Gas-Condensate Reservoir

Effective “Vaporizer” for Recovering Retrograde Hydrocarbon Condensate from a Gas-Condensate Reservoir

Water–rock–CO₂ interactions and CO₂ storage of Honghe tight oil reservoirs: an experimental and simulation study

On determination of interwell connectivity under immiscible gas injection process: Modified capacitance‐resistance model

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Optimization of miscible CO 2 EOR and storage using heuristic methods combined with capacitance/resistance and Gentil fractional flow models

Cited by 57 publications

References 60 publications

Effective “Vaporizer” for Recovering Retrograde Hydrocarbon Condensate from a Gas-Condensate Reservoir

Effective “Vaporizer” for Recovering Retrograde Hydrocarbon Condensate from a Gas-Condensate Reservoir

Water–rock–CO2 interactions and CO2 storage of Honghe tight oil reservoirs: an experimental and simulation study

On determination of interwell connectivity under immiscible gas injection process: Modified capacitance‐resistance model

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Water–rock–CO₂ interactions and CO₂ storage of Honghe tight oil reservoirs: an experimental and simulation study