Question

Match the Enhanced Oil Recovery (EOR) methods (GROUP I) with the corresponding laboratory tests (GROUP II). 

• A. P – III, Q – II, R – I, S – IV
• B. P – II, Q – IV, R – I, S – III
• C. P – III, Q – IV, R – II, S – I
• D. P – III, Q – II, R – IV, S – I

Hint:

Each EOR method has a corresponding laboratory test that helps evaluate its effectiveness. The tests vary depending on the specific characteristics of the method being used, such as gas miscibility, heat generation, viscosity, and interfacial tension.

Answer 1

The Correct Option is C

In Enhanced Oil Recovery (EOR) methods, various laboratory tests are conducted to assess the effectiveness of different recovery techniques. The correct matching of the EOR methods with the laboratory tests is as follows: 1. Gas Injection EOR (P): This method involves injecting gas (e.g., CO\(_2\)) into the reservoir to enhance oil recovery. The laboratory test used to assess this method is the Minimum Miscibility Pressure Test (III), which helps determine the pressure at which the injected gas becomes miscible with the oil, leading to improved recovery. 2. In-situ Combustion EOR (Q): This method involves igniting the oil in the reservoir to create heat, which reduces oil viscosity and improves flow. The laboratory test associated with this method is the Oxidation Cell Test (IV), which simulates the combustion process and evaluates the heat generated during in-situ combustion. 3. Polymer Flooding EOR (R): In polymer flooding, a polymer solution is injected to increase the viscosity of the injected fluid, improving sweep efficiency. The appropriate laboratory test for this method is the Screen Viscometer Test (II), which measures the viscosity of the polymer solution and its performance in displacing oil. 4. Surfactant-Alkaline EOR (S): This method uses surfactants and alkaline agents to reduce the interfacial tension between oil and water, aiding in the mobilization of oil. The relevant laboratory test is Interfacial Tension Studies (I), which measures the reduction in interfacial tension between the oil and water phases. Thus, the correct match is P – III, Q – IV, R – II, S – I.