نمایش نتیجه 12171 تا 12180 از 14709 نتیجه یافت شده برای P:
n: The steel component of the bearing of balance beam and supporting section.
n: an offset heavy-wall sub in the production string for placing gas lift valves, and so on.
a short, full diameter passage tubing sub with a pocket reachable from the inside where gas lift valves or chemical injection valves can be placed by wireline.
n: The angle of the top angle of PDC bit to the rertical line of the bits axis.
n: The operation of strengthen and fasten the screen on the screen frame.
n: a bit especially designed for use in drilling a hole around an obstruction in the main borehole. Usually, a cement plug is set on top of the obstruction, the side tracking bit is run into the hole on a whipstock or other directional drilling device, and the new borehole begun. Because the new borehole goes off to the side of the plugged borehole, the operation is called side tracking.
n: The spring slip under the middle-test packer.
n: the tacking of geological samples of the formation which constitutes the wall of the well bore.
n: the pole pad that pressed on the well wall.
n: see core gun.
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