xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. xxxxxxxxxxxxxxxxxx A joint in a tubing string that is subjected to the abrasive action of oil and gas forcibly entering the wellbore from a high pressure formation. Blast joints are made of special materials that resist the severe conditions of the situation. A flared pipe fitting that is used to connect tubulars of different diameters. A device with a restricted opening placed in the the tubing to control the rate of liquid or gas flow to the surface. A rotating or reciprocating device within a wellbore used to transfer fluids; e.g., sucker rod, centrifugal, rotary, jet. A device that may be placed within a wellbore for measuring or testing volumes, pressures, sizes, quantities, etc. A device used to permit linear expansion or contraction of a tubular string as the temperature rises or falls. xxxxxxxxxxxxxxxxxxxxxx A device run in the tubing string into which a gas lift valve is installed. The two most common types of mandrels are the conventional mandrel and the sidepocket mandrel. A device installed on the tubing string of a gas lift well completin that is sensitive to tubing and casing pressures, which cause the valve to open and close. The functioning of the valve is to allow gas to be injected into the fluid in the tubing in order to cause the fluid to rise to the surface. A very short portion of the tubing string in which the pump is seated. Commonly located above the gas anchor. Its function is to hold the stationary part of the pump in place during the upstroke. An unintentional hole in a tubular that allows the movement of fluid into or out of the tubular string. A receptacle in a tubing string with an internal profile to provide for latching and sealing of various types of plugs or valves. A shaped form used on the bottom of orienting tools to position the tool. The shape resembles a mule shoe or that of the end of a pipe cut both diagonally and concave. The shaped end forms a wedge to rotate the tool when lowered into a mating seat for the mule shoe. A pipe fitting that is usually threaded on both ends and is less than 12 inches in length. A device, usually employing rubber, used to produce a seal between tubing, casing, or drill pipe and the borehole wall or casing. A special pipe or casing which has the perforations. An accessory placed above the fishing tool in a tubing string. If the fishing tool is engaged and the fish cannot be pulled, the safety joint will permit disengagement. The polished section of tubular that receives a packing element and provides a seal. A special device placed in a string of tubing which can be operated by a wireline tool to open or close orifices (openings) to permit circulation between the tubing and annulus. It may also be used to open or shut off production from well completions. A safety device installed in the upper wellbore to provide emergency closure of the producing conduits in the event of an emergency. A device run into the wellbore of a pumped well as an integral part of the tubing which employs friction or slips between the anchor and the casing to prevent tubing movement with respect to the casing. XXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXX