| 摘要 |
One embodiment of the invention comprises a tool string (10) for testing a wellbore formation that includes a production inlet (20), an injection outlet (22), and a sampler apparatus (54). Fluid is taken from a production zone (16), into the tool string (10) through the production inlet (20), out of the tool string through the injection outlet (22), and into the injection zone (18). Within the interior of the tool string, the sampler apparatus takes samples of the fluid flowing therethrough. In another embodiment, a large volume of sample fluid is trapped within the interior of the tool string, such as between two valves (52, 26), and is removed from the wellbore along with the tool string subsequent to the test. In another embodiment, the tool string includes at least one perforating gun (96) to perforate one of the production and injection zones. The tool string may also include two perforating guns to perforate both the production and injection zones. One of the two perforating guns may be an oriented perforating gun so that upon activation the shaped charges do not disturb any of the cables, data lines (104), or transmission lines associated with the tool string.
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