| TA |
abbreviation: temporarily
abandoned. |
| tagging |
running pipe or tubing and landing
it on a downhole tool. |
| tailing in |
guiding a downhole tool into the
wellbore or up onto the rig floor. |
| tail out
rods |
to pull the bottom end of a sucker
rod away from a well when laying rods down. |
| tail pipe |
1. a pipe run in a well blow a
packer. 2. a pipe used to exhaust gases from
the muffler of an engine to the outside atmosphere. |
| take a
stain on |
to begin to pull on a load. |
| tally |
to measure and record length of
pipe of tubing |
| tank
battery |
a group of production tanks
located in a field to store crude oil. |
| tank
strapper |
the person who measures a tank to
determine the volume it holds at 1/4" intervals of height. |
| tannic acid |
the active ingredient of quebracho
and quebracho substitutes, such as mangrove bark, chestnut extract, and hemlock. |
| tap |
1. a tool for forming an internal
screw thread. It consists of a hardened tool-steel male screw grooved longitudinally
so as to have cutting edges. 2. a hole or
opening in a line or vessel into which a gauge or valve may be inserted and screwed tight.
v.1. to form a female thread by means of a tap.
2. extract or cause to flow by means of a borehole, e.g.,
to tape a reservoir. |
| taper tap |
a tap with a gradually decreasing
diameter from the top. It is used to retrieve a hollow fish such as a drill collar
and is the male counterpart of a die collar. The taper tap is run into a hollow fish
and rotated to cut enough threads to provide a finn grip and permit the fish to be pulled
and recovered. See tap. Compare die collar. |
| tapered
string |
drill pipe, tubing, sucker rods,
and so forth with the diameter near the top of the well larger than the diameter below. |
| target |
a bull plug or blind flange at the
end of a tee to prevent erosion at a point where change in flow direction occurs. |
| targeted |
refers to a fluid piping system in
which flow impinges on a lead-filled end (target) or a piping tee when fluid transits a
change in direction. |
| TCP |
abbreviation: tubing
conveyed perforator. |
| TD |
abbreviation: total depth |
| telecommunications |
pertaining to the transmission of
signals over long distances, such as by telegraph, radio, or television. |
| telescoping
derrick |
a portable mast that an be erected
as a unit, usually by a tackle that hoists the wireline or by hydraulic pistons. The
upper section of a telescoping derrick is generally nested (telescoped) inside the lower
section of the structure and raised to full height either by the wireline or by a
hydraulic system. |
| telescoping
swivel sub |
a sub with a telescoping joint
used in dual or triple completions for running additional tail pipe. |
| tell-tale |
terminology used to describe a
screen that, when packed off by gels, will give a pressure rise at the surface, thereby
"telling" the tool operator that the gel has reached a certain location.
Also called tattle-tale. |
| temperature
survey |
an operation used to determine
temperatures at various depths in the wellbore. It is also used to determine the
height of cement behind the casing and to locate the source of water influx into the
wellbore. |
| temporarily
abandoned |
temporarily shut in but not
plugged. |
| ten-minute
gel strength |
the measured 10-min gel strength
of a fluid is the maximum reading (deflection) taken from a direct-reading viscometer
after the fluid has been quiescent for 10 minutes. The reading is reported in lb/100
sq. ft. See API RP 13B for details of test procedure. |
| ten round |
same as an eight round, except ten
threads per inch. |
| tensile
strength |
the greatest longitudinal stress
that a metal can bear without tearing apart. A metal's tensile strength is greater
than its yield strength. |
| tension
tool |
a retrievable or drillable packer
in which sufficient pipe weight is not available to set the tool in compression. |
| tester |
a person who tests pipe and casing
for leaks |
| test
pressure |
an equipment's working pressure
times a safety factor. |
| test well |
a wildcat well. |
| TFL |
abbreviation:
through-the-flow-line. |
| thermal
decomposition |
the breakdown of a compound or
substance by temperature into simple substances or into constituent elements. |
| thief
formation |
a formation that absorbs drilling
fluid as it is circulated in the well. Lost circulation is caused by a thief
formation. Also called a thief sand or a thief zone. |
| thief zone |
see thief
formation |
| thinning
agent |
a chemical or combination of
chemicals that, when added to a drilling mud, reduces its viscosity. |
| thixotropy |
the property exhibited by a fluid
that is in a liquid state when flowing and in a semisolid, gelled state when at rest.
Most drilling fluids must be thixotropic so that cuttings will remain in suspension
when circulation is stopped. |
| thread
protector. |
a metal or plastic device that is
screwed onto or into pipe threads to protect 5them from damage when the pipe is not in
use. |
| thribble |
a stand of pipe made up or three
joints and handled as a unit. Compare double, fourable, and single. |
| through-the-flow-line (TFL) equipment |
any equipment designed to be
pumped down a completed well to effect a repair, modify the well's flow, or for other
reasons. |
