pressure at well bore
41Hydraulic fracturing — is a method used to create fractures that extend from a borehole into rock formations, which are typically maintained by a proppant. The method is informally called fracing or hydrofrac. The technique is used to increase or restore the rate which …
42Heckler & Koch G3 — G3 G3A3 Battle Rifle Type Battle rifle Place of origin …
43Sidoarjo mud flow — The Sidoarjo mud flow or Lapindo mud, also informally abbreviated as Lusi , a contraction of Lumpur Sidoarjo ( lumpur is the Indonesian word for mud), is a since May 2006 ongoing eruption of gas and mud in the subdistrict of Porong, Sidoarjo in… …
44Barnett Shale — Infobox Oil field name = Barnett Shale region = Bend Arch Fort Worth Basin,Texas country = United States coordinates = locblock = offonshore = Onshore operators = Devon, Chesapeake, EOG, XTO, Range Resources, EnCana, ConocoPhillips, Quicksilver,… …
45.30-06 Springfield — Infobox Firearm Cartridge name=.30 06 Springfield caption=From left to right 9.3x62mm, .30 06 Springfield, 8 x 57 IS, 6.5 x 55 and .308 Winchester cartridges. origin=flagcountry|United States type=Rifle service=1906 used by=USA and others… …
46Key Energy Services — Infobox Company company name = Key Energy Services company company type = Public (nyse|KEG) foundation = 1977 location = Operates internationally. Incorporated in Maryland with principal offices in Houston and Midland. key people = Chairman CEO:… …
47Derrick — For other uses, see Derrick (disambiguation). Derrick of Ocean Star Offshore Oil Rig Museum, Galveston, Texas A derrick is a lifting device composed of one tower, or guyed mast such as a pole which is hinged freely at the bottom. It is controlled …
48Rotary steerable system — A rotary steerable system is a new form of drilling technology used in directional drilling. It employs the use of specialized downhole equipment to replace conventional directional tools such as mud motors.They are generally programmed by the… …
49Slickline — As well depths have increased over the years since the first measuring lines were brought into use, accompanied by increased working loads, it has become necessary to develop wireline having a high strength/weight ratio.There is a need for… …
50Drill string — A drill string on a drilling rig is a column, or string, of drill pipe that transmits drilling fluid (via the mud pumps) and torque (via the kelly drive or top drive) to the drill bit. The term is loosely applied as the assembled collection of… …
