gas deliverability test

what is the absolute open flow potential (AOFP) of a gas well?

• The back pressure that a well can withstand

• The rate at which the well would produce against zero sandface back pressure

• The measure of gas well performance

• The prediction of flow rates against any particular back pressure.

What is the primary purpose of a gas deliverability test?

• to measure the reservoir pressure

• to assess the performance of gas wells

• to determine the composition of the produced gas

• to calculate the total gas reserves

The pressure and flowrate for a test are shown in the above figure. From the pressure and flowrate plot, identify what is test that has been conducted.

• flow after flow test

• modified isochronal test

• isochronal test

• injection test

what is the equation for the gas deliverability.

For the isochronal test and modified isochronal test, the slope m is determined on the

• Transient line

• Stabilized line

The absolute open flow potential for a gas well, the AOFP can be determined at atmospheric pressure (Patm) is equal to

• Patm = 0

• Patm = 14.7

How is the isochronal test is conducted?

• the well is flowing at equal rate but different time

• the well is flowing at equal time but different rate

• the well is flowing at different time and different rate

How is the modified isochronal test is conducted?

• the flowing period and shut in period is different

• the flowing period is the same but shut in period is different

• the flowing period is the different but shut in period is same

• the flowing period and the shut in period is same

what is the gas deliverability test that can be utilized for an extremely low-permeability reservoir?

• backpressure test

• modified isochronal test

• isochronal test

What is the purpose of extending the flow duration at the end of isochronal and modified isochronal test?

• to achieve stabilized flowrate response

• to achieve stabilized pressure response