Sentence examples for drawdown test from inspiring English sources

According to the wide variety of well-testing operations such as drawdown test, buildup test and their interpretation, it is possible to reach torrents of information about the reservoir and studied wellbore (Azamifard et al. 2016; Dai Weihua and Yuguo 2006; Xiaofen et al. 2009).

Pressure drawdown test for different scenarios has been studied.

For the former, a modified constant rate drawdown test will be presented.

For the latter, it will be shown that a modified constant flowing bottomhole pressure drawdown test can be applied, or if preferred, a more rigorous type curve.

This drawdown test shows the effect of a closed boundary response at late time period.

Table 1 presents a summary of the well and reservoir data of a designed BHP obtained from the examples of application well test software (Windowstm Application Well test Software 1995) simulating the drawdown test using parameters in Table 1.

Conventional pressure buildup and drawdown tests are generally influenced by wellbore storage effects.

While the concept of radius of investigation is better understood for drawdown tests, its applicability to buildup tests is less certain.

It is observed in drawdown tests when the well experiences an additional pressure decline due to production from other wells and, also, when the well produces under pseudosteady state before shut-in it for a buildup test.

Compared to the drawdown derivative curves, there exists a larger gap in the buildup derivative curves, indicating that buildup tests are more appropriate than drawdown tests for type curve matching non-Darcy flow behaviour.

The pressure together with its corresponding derivative type curves for both buildup and drawdown tests can be reproduced to examine effects of both wellbore storage and non-Darcy flow across the completion.