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The anti-personnel obstacle breaching system (APOBS) is an explosive line charge system that allows safe breaching through complex antipersonnel obstacles, particularly fields of land mines. The APOBS is a joint DOD program for the U.S. Army and the United States Marine Corps.
Coaxial machine gun: 1× 7.62mm M240 machine gun (2,000 rounds) Commander cupola M19: 1× 12.7mm M85 machine gun (600 rounds) Engine: Continental (now General Dynamics) AVDS-1790-2DR V12, air-cooled twin-turbo diesel engine 750 horsepower (560 kW) Power/weight: 14.1 hp/t: Payload capacity: A-frame crane boom: 9.0 short tons (18,000 lb) hoisting ...
Rotary table (#20) rotates, along with its constituent parts, the kelly and kelly bushing, the drill string and the attached tools and bit. Shale shaker (#2) separates drill cuttings from the drilling fluid before it is pumped back down the wellbore. Stand (#16) is a section of 2 or 3 joints of drill pipe connected and stood upright in the ...
Pump pressure, which is also referred to as system pressure loss, is the sum total of all the pressure losses from the oil well surface equipment, the drill pipe, the drill collar, the drill bit, and annular friction losses around the drill collar and drill pipe. It measures the system pressure loss at the start of the circulating system and ...
A blowout preventer (BOP) (pronounced B-O-P) [1] is a specialized valve or similar mechanical device, used to seal, control and monitor oil and gas wells to prevent blowouts, the uncontrolled release of crude oil or natural gas from a well. They are usually installed in stacks of other valves.
The downhole pressure [definition needed] in the rock structures changes depending upon the depth and the characteristics of the source rock. Natural gas (mostly methane) may be present also, usually above the oil within the reservoir, but sometimes dissolved in the oil at reservoir pressure and temperature. Dissolved gas typically comes out of ...
The Python minefield breaching system is used by the British Army to clear minefields. It replaces the Giant Viper, and has the ability to clear a safe lane in minefields 180–200 m long and 7.3 m wide through which vehicles can pass. A Chieftain AVRE carrying fascines and towing Python on Salisbury Plain.
Laid out line charge being used to destroy surplus ammunition. Systems in current use include the British Python minefield breaching system, which can clear a 7.3-metre (24 ft) wide by 180–200-metre (590–660 ft) long path, and the American M58 Mine Clearing Line Charge, which can clear an 8 m wide by 100 m long path. [8]