Modeling liquid flow for well test interpretation considers constant values of both density and compressibility within the range of dealt pressures. This assumption does not apply for gas flow case in which the …
The quantity ( qg – qoRs /1,000) Bg in Eqs. 17 and 21 is the free-gas flow rate in the reservoir; that is, the difference in the total gas rate, qg, and the dissolved gas rate, qoRs /1,000. Skin factor for multiphase flow test analysis using semilog plots is calculated from.
First, we show a simple volumetric equation that gives the CO2 storage capacity in a depleted gas reservoir, which considers the same volume of CH4 at …
2. Methodology2.1. Numerical model description We perform 3D multiphase, compositional reservoir simulations for UHS operations in depleted natural gas reservoirs with tNavigator [55] g. 2 illustrates a representative mesh for a depleted natural gas reservoir, with dimensions of 45 km in length and width and a variable thickness ranging …
At the 50th percentile uncertainty, the estimated total effective storage capacities in deep saline aquifers, future depleted oil reservoirs, and non-associated gas reservoirs are ~432, ~5, and ...
When calculating the storage efficiency terms, the DOE method accounts for several parameters, as presented in Gorecki et al. [35]: reservoir width, reservoir length, thickness, domain ...
The base case scenario created using real gas storage facility data enables the achievement of a good history match with the given parameters of the gas storage reservoir. Using the history match simulation case as an initial scenario (a base case), two different scenarios are created to determine the injection and withdrawal …
well in one kilometre distance, and considering a injection rate of 1 MtCO 2 per year, in all cases the effective storage capacity coefficient C is less than 0.036 in terms of. bulk volume and ...
The stress sensitivity of abnormally pressured carbonate gas reservoirs is of great complexity and exerts much influence on gas well deliverability calculation. Fifty core samples from the AD Gas Reservoirs were selected in the experiment to study the effect of abnormally high pressure and fracture on the stress sensitivity of carbonate gas …
gas reservoir, but the absolute value is still significant. I developed a method to estimate CO 2 storage capacity in depleted gas reservoir with water drive while considering CO 2 solubility in water. It is important because it may help avoiding storage capacity
2.4. Assessment scale and resolutionThe methodology to be applied in CO 2 storage capacity estimation, and the types and level of detail of the necessary data vary, depending on the scale and resolution of the assessment. The Country-Scale Assessment is a high level of assessment performed for a contiguous geographic area defined by …
In order to deeply understand how the main sensitive parameters affect gas well deliverability, calculation and analysis are carried out after separation. The product of pressure transmitting coefficient and time (ηt) is set in a range of 10 11 –10 16 mD·s −1 ·h (approximately covering the permeability of 0.01–1000.00 mD), and the skin factor in a …
In this review, the storage capability of depleted oil and gas reservoirs has been confirmed, and factors affecting the CO 2 storage potential, including geological factors and engineering factors, are concluded. CO 2 trapping mechanisms of different storage processes in depleted oil and gas reservoirs are elaborated and divided into …
In the estimation of the CO 2 storage capacity in both waterflooding and CO 2 flooding oil reservoirs, theoretical and effective storage capacities can be obtained by …
When considering storage in depleted gas reservoirs, some of the already existing infrastructure can be repurposed for hydrogen storage (McKinsey 2021). Therefore, the use of depleted hydrocarbon fields as UHS sites is widely considered (e.g., Muhammed et al. 2022 ; Delshad et al. 2022 ).
The calculation accuracy of CO 2 storage capacity in depleted oil and gas reservoirs can be optimized by determining the mineralization storage volume and the …
The primary objective of this work is to improve CO 2 storage resource estimates for CO 2 EOR sites via integration of real-world reservoir performance data, …
Pang put forward a calculation method of the water storage capacity of underground water reservoir (Pang et al. 2019), which uses the vertical displacement trajectory equation of different ...
In the exploration stage, qualitative evaluation of reservoirs is widely utilized. Due to limited regional data, reservoir evaluation and classification are often conducted based on parameters such as porosity, permeability, and pore structure. The results of qualitative evaluation are preliminary and approximate, and various indicators related to lithology, …
The entire process of shale gas generation, migration, and accumulation involves the diffusion of shale gas, and it is impossible to disregard the harm that gas diffusion does to gas reservoirs. The …
Shen Pingping et al. / Petroleum Exploration and Development, 2009, 36(2): 216 –220 E Rb——oil recovery before CO 2 breakthrough, f; E Rh——oil recovery when certain CO 2 is injected, f. In the above equations, the key is to determine the oil re-covery factor.
1. Introduction In an effort to reduce carbon dioxide (CO 2) and other greenhouse gas (GHG) emissions from large stationary sources, the U.S. Department of Energy (DOE) is pursuing geologic storage of CO 2 as one approach in a portfolio of GHG reduction strategies. as one approach in a portfolio of GHG reduction strategies.
RESERVOIR DESIGN AND STORAGE VOLUME. In accordance with engineering standards of care, reservoirs are to be designed to provide stability and durability, as well as protect the quality of the stored water. For any particular project there may be more than one acceptable reservoir design concept. The reservoir design criteria are not intended …
An analytical CO 2 injection equation for estimating effective CO 2 storage capacity is derived and verified for a gas reservoir producing gas, followed by injecting …
For the cons traint of the reverted reservoir pressure (p. ) of 3000 psi (20.6 8. MPa) (recovering the system pressure t o the initial reservoir pressure), the estim ated CO. storage capacity was ...
a) Illustration of the definition of the storage coefficient, which is the volume of water released from, or added to, storage per unit change in head normal to the earth''s surface per unit area. b) As the water table is …
Some of the oil and gas industries have been implementing the CO2 storing technology called Carbon Capture Storage (CCS). However, there are less restrictions and consideration to …
In this study, a calculation method of storage potential was proposed to estimate the CO2 storage potential of the Yanchang shale gas reservoir in the Ordos …
Proceedings of. There is a 5-stage fracturing MFHW in the reservoir, and there are 15 hydraulic fractures in 3 clusters of each stage. In addition, there are 56 natural fractures. After multiple hydraulic fractures and fracture networks are formed by hydraulic fracturing technology in shale reservoirs, the fracture network with medium ...
The calculation accuracy of CO2 storage capacity in depleted oil and gas reservoirs can be optimized by determining the mineralization storage volume and the actual reservoir characteristics of the dissolution storage coefficient numerically.
in gas reservoir % Coefficient to calculate cumulative water influx from Van Everdingen-Hurst solution, STB/psi % 2 CO 2 concentration at j-th iteration step ) Original gas in place, SCF ) Cumulative injected gas, SCF ) Cumulative produced )
The heat transfer coefficient is the proportionality coefficient between the heat flux and the thermodynamic driving force for the flow of heat (i.e., the temperature difference, ΔT): h = q / (Ts - K) where: q: amount of heat …
Shale gas reservoirs can be divided into three regions, including hydraulic fracture regions, stimulating reservoir ... respectively; storage coefficients of the inner region and outer region, ω ...
Most of previous work used an ad hoc "storage efficiency coefficient" as a discount factor in the calculation of the "effective" storage capacity. The mid-case values of "storage efficiency coefficient" are set to be 0.25 and 0.63 for …
A 2016 reservoir engineering stud y on hydrogen storage at the Rough gas field (A mid et al. 2016) found a cushion gas requirement for natural gas of around 70%. The discrepancies betw een
The large-scale extraction of coal resources in the western mining areas of China has resulted in a significant loss of water resources, which is a challenge for coordinating resource extraction with ecological preservation in the mining areas. Although underground reservoir technology can effectively solve this problem, measuring the …
Wellbore storage (WBS) occurs due to fluid loading/unloading in the wellbore, when a well starts production or is shut-in. This phenomenon creates variable sandface rate and time lag between the surface production rate and the stable sandface rate. Wellbore storage effects can sometimes conceal important information and …