| 摘要 |
Downhole tools for gravel pack completion processes in wellbores comprise a screen, an isolation device comprising a sealing element disposed above the screen, and an artificial lifting device disposed above the isolation device. Upon actuation, the sealing element divides the wellbore into an upper zone and a lower zone so that the screen is disposed in the lower zone and the artificial lifting device is disposed in the upper zone. The two zones are in fluid communication with each other through a longitudinal bore within the downhole tool. In operation, the artificial lifting device of the downhole tool creates a negative pressure so wellbore fluid is transported from the lower zone into the upper zone. Due to this flow of fluid through the downhole tool, gravel disposed within the wellbore becomes sufficiently fluidized to facilitate the screen being inserted into the gravel form the gravel pack completion.
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