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EOR Screening Criteria

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Timur Equation – Estimation of Permeability

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Common Capillary Pressure and Permeability Models

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Proved Probable Possible Reserve

Proved Reserve – Considered proved if commercial producibility of the reservoir is supported by actual production or formation tests – Refers to estimated quantity of reserves and not just productivity of the reservoir – May be assigned on the basis of logs / cores that indicate reservoir is hydrocarbon bearing and analogous to reservoirs in the same […]

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The Golden Rule of Decline Curve Analysis

“The Basic assumption in this procedure is that whatever causes controlled the trend of a curve in the past will continue to govern its trend in the future in a uniform manner”

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Reserve Classes

Proved Reserves are those quantities of petroleum, which by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be commercially recoverable, from a given date forward, from known reservoirs and under defined economic conditions, operating methods, and government regulations. If deterministic methods are used, the term reasonable certainty is intended to […]

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Reserves are like fish

Proved Developed The fish is in your boat. You have weighed it, you can smell it and you will eat it. Proved Undeveloped The fish is on your hook in the water by your boat and you are ready to net it. You can tell how big it looks (they always look bigger in the […]

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Relation between surface tension and viscosity?

Surface tension is the amount of attraction the surface of an object has. Surface tension is easily demonstrated by observing a pool of water. Put your finger in the water and slowly… i mean “slowly”… pull your finger away and you will see the water is actually attracted to your finger and the water will […]

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Quality Assurance Tests for Reservoir Modeling & Simulation

The objective of these tests is to improve the reliability of forecasts derived from reservoir modeling and simulation studies by: Applying systematic review methods for the early identification of potentially unreliable forecasts. Improving awareness of how to build forecast reliability into reservoir and simulation models. Models Honor Well Control Test Group: Well Data Consistency: Maps […]

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Typical capillary pressure–saturation relationship

DRAINAGE •Fluid flow process in which the saturation of the nonwetting phase increases •Mobility of nonwetting fluid phase increases as nonwetting phase saturation increases Examples: Hydrocarbon (oil or gas) filling the pore space and displacing the original water of deposition in water-wet rock Waterflooding an oil reservoir in which the reservoir is oil wet Gas […]

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