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Low pressure liquid reservoir can simultaneously

Liquid CO2 energy storage system is currently held as an efficiently green solution to the dilemma of stabilizing the fluctuations of renewable power. One of the most challenges is how to efficiently liquefy the ga.
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Mechanism and Model Analysis of Ultralow-Temperature Fluid

Ultralow-temperature fluids (such as liquid nitrogen, liquid CO2) are novel waterless fracturing technologies designed for dry, water-sensitive reservoirs. Due to their ultralow temperatures, high compression ratios, strong frost heaving forces, and low viscosities, they offer a solution for enhancing the fracturing and permeability of low-permeability reservoirs. In this

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Diffusion Coefficients in Systems Related to Reservoir Fluids

One is the low-pressure gaseous diffusion, and another is the liquid-phase diffusion. The kinetic theory of dilute gases forms the basis for the gaseous diffusion modeling.

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Effect of low velocity non-Darcy flow on pressure response in

The permeability of tight oil reservoirs is no longer a constant, but a variable, which is dependent on reservoir pressure. In other word, the tight oil reservoir is stress sensitive media. The low-velocity non-Darcy flow and stress sensitivity will greatly affect the bottom hole pressure response.

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12.4: Phase Diagrams

Finally, point A, where the solid/liquid, liquid/gas, and solid/gas lines intersect, is the triple point; it is the only combination of temperature and pressure at which all three phases (solid, liquid, and gas) are in equilibrium and can therefore exist simultaneously. Because no more than three phases can ever coexist, a phase diagram can

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Experimental Investigation of Cooling Effects Resulting from Injecting

Low abandonment pressure in the reservoir provides additional voidage-replacement potential for CO 2 and allows for a low surface pump pressure during the early period of injection. However, the

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FUNDAMENTALS OF RESERVOIR FLUID FLOW

slightly compressible liquid at a reference (initial) pressure p ref, the changes in the volumetric behavior of this fluid as a function of pressure p can be mathematically described by integrating Equation 6-1 to give: where p = pressure, psia V = volume at pressure p, ft3 p ref = initial (reference) pressure, psia V

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Development of the theory and technology for low permeability

0.29 0.072b K   (7) The impact of slippage effect on the production depends on the permeability and gas reservoir pressure, the smaller the permeability and gas reservoir pressure, the more remarkable the impact of slippage effect will be. 3.2.

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Wellhead injection pressure versus water injection rate for

In order to further explore the technology of water injection development in ultra-low permeability reservoir, the Chang 6 reservoir in S area is taken as an example in this study to analyze the

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Propagation and distribution of shear and tensile hydraulic

1 · The failure mechanism of shear-expansion effect under low pressure and dynamic shear under high pressure of coal beddings induced by the dissolution-corrosion effect of fracturing

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RESERVOIR PRESSURE ESTIMATION USING PTS DATA

pressure decline rates observed in the field based on static pressure gradient surveys despite the field''s uniformly low production decline rates. Reservoir pressures at the permeable zones of Bulalo 100 were then estimated using pressure, temperature and flow data obtained from shut-in and injecting PTS surveys.

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Design and thermodynamic performance analysis of a new liquid

The cryo-turbine is the reliable liquid expander device to generate low pressure liquid product by expanding the high pressure liquid fluid. In contrast to the throttling valve, the working fluid expands through the cryo-turbine in a near-isentropic manner with the decrease of both temperature and enthalpy, thus raising the amount of liquid

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Novel apparatus to measure the low-permeability and porosity in

This study proposes a new apparatus which can simultaneously measure the physical properties such as low-permeability and porosity in a tight gas reservoir. To generate pressure pulse, high pressure generator was installed, which can K., Walls, J.D., Ajufo, A.O., 1986. Laboratory Determination of Effective Liquid Permeability in Low

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Why Does Water Pressure Drop

Well failure: A malfunctioning well pump can cause a water pressure drop in a building. This can be due to a tripped breaker or a failed motor. Partially closed main valve: If the water pressure is low around the entire house, but water is still flowing, the main valve might be slightly closed. This valve regulates the water flow from the well

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Dissolved air flotation pretreatment for low-pressure membranes

Low-pressure membranes (LPM) have become a well-established technology in drinking water treatment (DWT) applications, with rapid growth over the past two decades [[1], [2], [3], [4]].The popularity of LPMs may be attributed to several factors including: (1) reliable operation with a superior quality product water, even in the face of changing feed water quality [5, 6]; (2)

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Classification standard of low permeability reservoir.

Developing low-permeability reservoirs with low porosity and permeability remains a significant challenge owing to the high reservoir stresses and poor water injection effects; both factors are

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Production performance of the low-permeability reservoirs:

(1) and integrating both sides of the deformation equation, the state equation of fluid under any reservoir pressure p can be obtained as follows: (2) ρ = ρ i e − C ρ (p i − p) where ρ is the fluid density, kg/m 3; ρ i is the fluid density at the initial reservoir pressure, kg/m 3; C ρ is the compression coefficient of the fluid, MPa

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(PDF) An Overview of Oil Production Stages: Enhanced Oil Recovery

The main purpose of secondary recovery process is to maintain the reservoir pressure by either a natural gas flooding or water flooding. The rise in world oil prices has encouraged the producers

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Low-tension gas process in high-salinity and low-permeability

According to Nelson and Pope (), if effective mobility control is maintained, only a short period of ultra-low IFT conditions in the reservoir is sufficient for effective oil emulsification and mobilization.Accordingly, slug (liquid) was injected for 0.5 pore volumes (PV) right after water flooding. Slug injection was followed by the injection of drive solution with 0.2 wt% APG (Table 2).

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Productivity equation of low-permeability condensate gas well

Establishment of productivity equation is an important premise for rational and efficient development of low-permeability condensate gas reservoir and accurate analysis of production performance. Based on two-phase seepage mechanism of gas and condensate oil in formation, the productivity equation is established considering threshold pressure, stress

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An approach for determining the water injection pressure of low

Waterflooding is an important functional process for low-permeability reservoir development. it is unreasonable to utilize the formation-parting pressure as the maximum threshold of the water injection pressure in a low-permeability reservoir characterized by the presence of natural fractures. Simultaneously, the water cut of well K5

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Low-Permeability Reservoir

The flow rate increased by 0.5–1 times under the action of sound waves for about 6 h. It indicated that the low-frequency wave can change the rheological properties of the polymer solution during the excitation. Dyblenko et al. [48] investigated the effect of water-driven kerosene in reservoir rocks using 200 Hz acoustic waves. The

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What is the role of pressure transient analysis in reservoir

1 · Pressure transient analysis plays a crucial role in the characterization of reservoirs, providing valuable insights that help engineers understand reservoir behavior and make

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Phase Behavior Study in the Deep Gas-Condensate Reservoir With Low

Recently, more and more deep reservoirs are developed due to the appearances of new technologies. Among them, gas-condensate reservoirs, with high temperature, high pressure, and low permeability

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Phase State of Reservoir Hydrocarbons and Gas–Liquid Equilibrium

The higher saturation pressure an oil reservoir possesses, the earlier the bubbles will occur. Continuing to decrease the pressure, more and more gas will escape from the crude oil. If the initial pressure of a reservoir falls exactly at the point I, it can be called a "saturated reservoir." The point L represents a reservoir with gas-cap.

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The Dynamics of Commingled Production

For a volumetric reservoir, the general MBE states that the volume of underground withdrawal, resulting in a pressure drop in the reservoir, equals the expansion of reservoir fluid(s) plus reduction in hydrocarbon-pore volume (connate water expansion plus pore volume reduction). The technique can be applied to estimate reserves and the =)

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An exact analytical solution of moving boundary problem of radial

Many engineering technologies involve the moving boundary problems for the radial seepage flow with a threshold pressure gradient, such as the well testing in the development of low-permeability reservoirs, heavy oil reservoirs and groundwater resources.However, as a result of the strong nonlinearity, an exact analytical solution of the

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CO2-EOR and storage in a low-permeability oil reservoir:

In the early stage of the development, the reservoir pressure increased to 42.6 MPa due to the water flooding. However, with the failure of water injection in 2014, the reservoir pressure decreased gradually until 2021, when a short-term injection test of CO 2 was conducted, and the reservoir pressure returned to 40.12 MPa (October 2022).

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Gas Condensate Reservoir Developmental Techniques

Depending on the pressure behavior of a gas reservoirs, most of the rich gas reservoir performance can mainly be divided into three time periods: (i) when the overall reservoir pressure is higher than dew point; (ii) when just the pressure of the near well drops below the dew point pressure; and (iii) when overall reservoir pressure is lower

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Flexible CO2-plume geothermal (CPG-F): Using

Low water extraction rates are important because any CO 2-coproduced water or brine from the shallow reservoir has to be removed (and disposed of) before the CO 2 is injected into the deep reservoir as water injection into a reservoir reduces the fluid mobility and increases the fluid pressure near the deep injection well screen, reducing the

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About Low pressure liquid reservoir can simultaneously

About Low pressure liquid reservoir can simultaneously

Liquid CO2 energy storage system is currently held as an efficiently green solution to the dilemma of stabilizing the fluctuations of renewable power. One of the most challenges is how to efficiently liquefy the ga.

••A novel liquid CO2 energy storage system with low pressure stores.

SymbolsĖ exergy flow rate (kW) h specific enthalpy (kJ/kg) ṁ mass flow rate (kg/s) p pressure (MPa) Q̇ heat transfer rate (kW) EVR energy density (kWh/m3) .

A significant growth of renewable energy penetration in the energy market can be seen in past decades due to a rising worldwide concern about climate change [1]. However, the.

Fig. 1 represents the newly proposed LCES system with low pressure stores. Its main feature is that the sensible and latent cold energies are separately stored. Particularly, the charging and.

The performance of the new LCES system is evaluated by means of the established thermodynamic model. In this section, the model is described at length in accordance with the thermod.

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