| 摘要 |
A gravel-pack, well screen having an internal shunt tube positioned inside the s creen for delivering gravel slurry to different levels within the well annulus during a gravel pack operation. The screen is comprised of one or more joints with each joint being c omprised of a base pipe having a screen section therein. The internal shunt extends substant ially throughout the length of the base pipe. Bolts, each having a passage therethroug h, provide fluid passages between the exterior of the screen and the internal shunt near ei ther end of the base pipe. During operation, slurry enters the internal shunt tube through t he uppermost bolt and exits into the annulus through the passages in the lower bolts to distr ibute gravel to different levels of the annulus.
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