If the fluid level in the hole falls as the pipe is removed, the bottom hole pressure will be reduced. A kick may occur if the magnitude of the reduction exceeds the trip margin or safety overbalance factor. The hol.
[pdf] If the fluid level in the hole falls as the pipe is removed, the bottom hole pressure will be reduced. A kick may occur if the magnitude of the reduction exceeds the trip margin or safety overbalance factor. The hol.
[pdf] Jackup rigs are so named because they are self-elevating with three, four, six and even eight movable legs that can be extended (“jacked”) above or below the hull. Jackups are towed or moved under self propulsion to the site with the hull lowered to the water level, and the legs extended above the hull. The hull is actually a water-tight barge that floats on the water's surface. When the rig reaches the work site, the crew jacks the legs downward through the water and int.
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