| 摘要 |
A wellbore apparatus adapted to be disposed in a wellbore includes a perforator adapted for perforating a formation penetrated by the wellbore and producing a wellbore fluid from the formation, a drill stem test string connected to the perforator, the drill stem test string including standard drill stem test equipment, such as a test valve and a reversing valve, and a drill pipe connected to the drill stem test string. When the wellbore fluid produced from the formation and entering the test valve fails to have enough natural formation pressure to travel uphole through the drill pipe to a surface of the wellbore, the wellbore fluid must be pumped uphole. A progressing cavity pump is connected to the drill pipe. More particularly, the cavity pump includes a stator, and the stator is connected to the drill pipe. A rotor of the cavity pump is enclosed by the stator and is connected to a sucker rod and a drive head. The drive head rotates the sucker rod and rotates the rotor of the cavity pump when the rotor is enclosed by the stator. The rotation of the rotor of the cavity pump will produce a negative pressure region within the drill pipe, and this negative pressure region will draw the wellbore fluid uphole through the drill pipe to the surface of the wellbore.
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