Said of a liquid (usually water) mixed with finely ground earthy or clayey
materials. Long
The water or oil in which mudlike solids are suspended; used to support
the open bore and cool and clear the cuttings from a drill bit. The fluid
is circulated while rotary- and/or diamond-drilling a borehole.
See also:drilling mud
Line of demarcation between fairly clear supernatant water and settling
solids in a thickener or other sedimentation vessel. Pryor, 3
A continuous analysis of the drilling mud and well cuttings during rotary
drilling for entrained oil or gas. Visual observation, ultraviolet
fluoroscopy, partition gas chromatograph, and hydrogen-flame ionization
analyzer may be used. A drilling-time log is kept concurrently.
AGI
a. A method of determining the presence or absence of oil, gas, and salt
water in the various formations penetrated by a drill bit. The drilling
fluid and the cuttings are continuously tested on their return to the
surface, and the results of these tests are correlated with the depth of
origin. Brantly, 1
b. A mud log is a recording vs. depth of the parameters being monitored.
Basic parameters monitored are: bit weight, rotary speed, rotary torgue,
mud weight, gas content (trip and background) cutting analysis, pit
volume, flow rate, pump pressure (strokes), hole depth, and chlorides.
This is a common service used to obtain data from the mud system and
drilling parameters.
A machine, pump, hopper, or other apparatus used to mix dry ingredients
with water or other liquids to prepare a drill mud. Also called atomizer;
jet mixer; mixer. Syn:emulsifier
a. A type of hot spring containing boiling mud, usually sulfurous and
often multicolored, as in a paint pot. Mud pots are commonly associated
with geysers and other hot springs in volcanic areas, esp. Yellowstone
National Park, WY. AGI
b. A geyser that throws up mud. Also called mud geyser.
Standard, 2; Fay
a. The circulating pump that supplies fluid to a rotary drill. Also called
slush pump. See also:mud hog
b. See:circulating pump
a. The section of a boiler where scale, alkalies, and sediment collect.
b. The ring or frame forming the bottom of a water leg in a steam boiler.
Webster 3rd
The more or less sudden inflow of peat, moss, sand, gravel, silt, or any
other waterlogged material into shallow mine workings. The manager has a
duty to take steps to prevent such inrushes as laid down in the
Precautions against Inrushes Regulations, 1956. Also called mud run.
See also:inrush of water; running ground. Nelson
A flatboat or barge for the transportation of mud, generally used in
connection with dredges.
An 11-in-long (28-cm-long), 3-lb (1.4-kg) clamshell-type snapper attached
to the bottom of a sounding lead by means of a hole drilled in the lead.
The jaws are cast bronze and are actuated by a spring. The jaws are held
open by engaging two trigger pins within the jaws. The mud snapper and
sounding lead may be operated in shallow water by hand lowering or by
lowering from a bathythermograph or oceanographic winch. Hunt
A device attached to drill rods and used to remove sand from a borehole.
CF:mule shoe
a. An indurated mud having the texture and composition of shale, but
lacking its fissility; a blocky or massive, fine-grained sedimentary rock
in which the proportions of clay and silt are approx. equal; a nonfissile
mud shale. See also:claystone; siltstone. AGI
b. A general term that includes clay, silt, claystone, siltstone, shale,
and argillite. AGI
A uranium prospector's term, esp. on the Colorado Plateau, for the ratio
of the total thickness of red mudstone to that of green mudstone within an
assumed stratigraphic interval. Its value is based upon the premise that
uranium-bearing solutions will bleach red mudstone containing ferric iron
to green mudstone containing ferrous iron in the course of depositing
uranium minerals. AGI
A place where uranium mineralization has been trapped at a
mudstone-sandstone interface. Ballard
In drilling operations, a mud pit. Long
a. The act or process of filling, choking, or clogging the waterways of a
bit with consolidated drill cuttings. Also called sludging; sludging up.
Long
b. The act or process of filling the pores or cracks in the rock
surrounding a borehole; also, to cause mud to adhere to the walls of a
borehole. Long
The property of a mud-laden fluid to resist flow due to internal friction
and the combined effects of adhesion and cohesion; e.g., a Marsh funnel
(used to measure the viscosity of mud) will discharge 1 quart (0.95 L) of
water in about 36 s, whereas an equal volume of an average drilling mud is
discharged in 40 to 55 s or more from the same funneI. Long
An accumulation, usually conical, of mud and rock ejected by volcanic
gases; also, a similar accumulation formed by escaping petroliferous
gases. AGI
a. See:mud cake
b. The formation of mud in the drilling fluid by adhering to the wall of
the hole. When the drilling mud particles comes in contact with porous,
permeable formation, solid particles immediately enter the openings. This
sealing property is dependent upon the amount and physical state of the
colloidal material in the mud.