... permeability was measured. Gelant was injected into the cores until the injection pressure stabilized. Breakthrough pressure was tested and followed by two WAG cycles injection. The injection pressure was monitored. Different permeability cores (100- 1200 md) were used to mimic different reservoir conditions...

... huff and puff experiments were conducted to investigate sweeping results of the selection of injecting well, combination of injection wells within the model. In addition, one numerical model corresponding to the physical one was built and numerical experiments were carried out to quantify the gas...

... in the field to expand drainage area, severe water invasions still happened after years of development [1,2] . Cyclic CO 2 injection, also known as CO 2 huff-n-puff, was then conducted to enhance oil recovery (EOR) since 2010, and great profits has been brought with 109.5×10 4 t of oil productions until...

.... However, it is inevitable that the cushion will mix with the working gas during the operation of gas storage, which reduces the thermal enthalpy and even changes the pressure dynamics of the reservoir. It is important to research how to control the injection of CO 2 to operate the UGS efficiently...

... in the sourcesink model. However, unlike hydrocarbon reservoirs which are typically well developed, these deep formations face the challenge of characterization due to a lack of data and their uncertainty. Spatial reservoir information is critical in understanding CO 2 injectivity, plume dynamics, and pressure...

... aquifer system, which expands on earlier work to a wider application. The solutions for the injection at a constant rate and the time-dependent leakage through an inclined fracture of caprock are derived with Laplace transform, Fourier cosine transform and Duhamel's principle. Then, by means...

... sequestration. Even with the reservoir pressure maintenance due to the injection of CO 2 , the reservoir productivity is not enhanced. Hydraulic fracking which creates freeways for gas flow is the key to improve the reservoir performance. The multicomponent desorption/adsorption is a very important feature...

... recovery is still low as an average of 7.5 %. Injecting carbon dioxide (CO 2 ) to enhance oil recovery in these poor-quality formations is still a debatable issue among investigators. In this study, three steps of research have been integrated to investigate the parameters which control the success of CO 2...

... in these unconventional formations. Furthermore, the incremental oil recovery due to lean gases, rich gases, and CO 2 gas injection confirms the predicted flow-regime. The effect of diffusion-implementation has been verified with both of single porosity and dual-permeability model cases. However, some of CO 2 pilot...

... in oil production. This method of calculating foamy oil properties would provide the basics for developing numerical simulation models of foamy oil flow during CO 2 flooding. mechanism foamy oil flow upstream oil & gas flow in porous media characteristic injection saturation asphaltene...

... Abstract A new method of coalbed methane (CBM) recovery is proposed wherein hot carbon dioxide at or near supercritical condition is injected into a CBM reservoir to take advantage of enhanced desorption of methane at elevated temperatures and the preferential adsorption of CO 2 on coal...

... capital cost, and infrastructure corrosion. In this work, we present an alternative CO 2 flooding method which generates CO 2 inside the reservoir to increase oil recovery. The process involves the injection of a concentrated CO 2 producing solution of ammonium carbamate (AC). Chemical solvent CO 2...

... instabilities with time was simulated with highly accurate numerical methods. More importantly, to reduce the unstable displacement and improve sweep efficiency, a time-dependent injection rate involving periodic alternation of injection and extraction was employed. Different from the widely used constant...

... diagnostic plots have been produced from the history match with CO 2 performances in fields' pilots which were performed in Bakken formation of North Dakota and Montana. Finally, fitting the backward with the forward diagnostic plots was used to report and diagnose some findings regarding the injected-CO 2...

... Sequestration Communities interested in storing CO 2 in EOR projects. In 2015, Merchant Consulting published CMTC-440075-MS "Life beyond 80 – A look at Conventional WAG Recovery beyond 80% HCPV Injection in CO 2 Tertiary Floods". The primary objective of the report was to target all 10 CO 2 Recovery Methods...

... to be stored in aquifers responsibly, it is essential to identify key concepts that need to be considered for potential implementation. Ideally, injected CO 2 will migrate through an aquifer from injection wells to remote storage sites, and remain isolated from the atmosphere for a considerable period of time...

... Laboratory, is using this project to monitor CO 2 injection and movement in the field to determine CO 2 storage potential in depleted oil reservoirs. The field was discovered in 1955 with estimated initial oil in place of about 120 MMBO. The target reservoir is the Pennsylvanian-aged Upper Morrow sandstone...

... poor. Therefore, CO2 injection has been started since April 2008 for EOR associated with CO2 storage for environmental benefits. This paper is aimed at assessing the current CO2 storage capacity and distribution at different states in the oil reservoir after 6-year injection until April 2014. Based...

... Abstract The effects of chemical interaction between injected CO2, brine, and formation rocks are often ignored in sequestration studies because chemical reactions are assumed to be localized to carbonate rocks that make up only a small proportion of the potential reservoirs. It is conjectured...

... Abstract This paper presents a modeling study of CO2 injection in chalk core base on data reported by Darvish (2007). The experiment consisted of a vertically-oriented 60 cm long chalk outcrop core initially saturated with live reservoir oil at 130oC and 300 bar. After saturating the core...