tubing string head
21Blowout preventer — A blowout preventer (BOP) is a large valve that encases an oil well at surface. During drilling or well interventions, the valve may be closed if overpressure from an oil reservoir causes formation fluids such as oil and natural gas to back up… …
22musical instrument — Introduction any device for producing a musical sound. The principal types of such instruments, classified by the method of producing sound, are percussion (percussion instrument), stringed (stringed instrument), keyboard (keyboard… …
23mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
24Star Trek V: The Final Frontier — Theatrical release poster art by Bob Peak Directed by William Shatner …
25Wrench — For other uses, see Wrench (disambiguation). A set of chrome vanadium metric wrenches, open at one end, box/ring at the other. This type is commonly known as a combination wrench. A wrench or spanner is a tool used to provide grip and mechanical… …
26Art, Antiques, and Collections — ▪ 2003 Introduction In 2002 major exhibitions such as Documenta 11 reflected the diverse nature of contemporary art: artists from a variety of cultures received widespread recognition for work ranging from installation to video to painting …
27Water well — Village pump redirects here. For information on Wikipedia project related discussions see Wikipedia:Village pump. Water well at the Wald monastery in Germany. A water well is an excavation or structure created in the ground by digging, driving,… …
28Neti (Hatha Yoga) — Ceramic neti pot; neti pots can also be made from glass, metal, or plastic. Neti is an important part of Shatkarma (sometimes known as Shatkriya), the yogic system of body cleansing techniques. It is intended mainly to the cleaning of the air… …
29archery — /ahr cheuh ree/, n. 1. the art, practice, or skill of an archer. 2. archers collectively, as in an army. 3. the equipment of an archer, as bows and arrows. [1350 1400; ME archerye < MF archerie, equiv. to arch(i)er ARCHER + ie Y3] * * * Sport of… …
30skiing — /skee ing/, n. the act or sport of gliding on skis. [1890 95; SKI + ING1] * * * I Sport and mode of transportation involving moving over snow on a pair of long flat runners (skis) attached to shoes or boots. Skiing was born in northern Europe;… …
