Question

Select the CORRECT statements from the following.
Well testing operations on a typical crude oil reservoir

• A. do not measure rock and fluid properties of the reservoir when the well is flowing or shut-in.
• B. measure variation in pressure response of the reservoir with time when the well is flowing or shut-in.
• C. measure productivity index and partial well completion.
• D. do not measure length and conductivity of hydraulic fractures.

Hint:

Well testing helps in evaluating key reservoir parameters and productivity without directly measuring rock or fluid properties during the test.

Answer 1

The Correct Option is A, B, C

Step 1: Well testing is typically done to evaluate reservoir properties such as permeability and productivity index. However, when the well is flowing or shut-in, it is generally not used to measure rock and fluid properties directly, making option (A) correct.

Step 2: During well testing, pressure variations are measured over time to understand reservoir characteristics such as flow rates and pressure behavior, which makes option (B) correct.

Step 3: Productivity index and the completion stages are also measured during well testing to assess the performance of the well, making option (C) correct.

Step 4: While hydraulic fractures may be analyzed indirectly, the length and conductivity of fractures are not typically the focus during well testing, so option (D) is incorrect.