Mud pump used in drilling rig

Both high-pressure mud pumps are utilized on rigs to circulate the drilling fluidaround. Each type, however, has its operating limits,. . The speed of the piston is not constant during the suction and discharge strokes. During each stroke, the speed increases from zero to maximum at approximately the halfway position. . Mud pumps must be equipped with pressure relief valves. These valves prevent too high a pressure from being built up in the circulating system. The relief valves most. [pdf]

Small oil drilling rig

Small oil drilling rigs are portable pressure control devices and excel in low-drilling-depth situations. Small oil drilling rigs can be divided into four major types—vertical drilling rigs, horizontal drilling rigs, directional drilling rigs, and offshore drilling rigs. [pdf]

Blue water drilling rig

The first offshore mobile drilling platform was the Breton Rig 20, first operated in 1949. This rig had evolved from the inland drilling barges which were used to drill in marshes and protected waters in up to 10 feet of water. The Breton Rig 20 was 160 feet by 85 feet, and could work in 20 feet water depth. [pdf]