QZ-11 Specifications Drilling Service
Maximum Input 1,600 BHP (1,193 kw)
Maximum RPM 115 RPM
Stroke Length 11″ (279 mm)
Piston Load 150,300 lbs. (68,175 kg)
Pump Weight 37,000 lbs. (16,815 kg) average
Gear Ratio 4.38:1
Ratings are based on 90% mechanical efficiency and 100% volumetric efficiency
Standard Features
• Nodular iron power frame, eccentric, connection rods, and crossheads
• Double-row-spherical roller bearnings carry eccentric
• Double extended Jackshaft carried on heavy-duty straight roller bearings
• Dual roller bearing connecting rod
• Heat-treated alloy steel main gears are bolted to the eccentric
• Replaceable bronze crosshead slides
• Full splash lubrication, with oil pump to feed working parts
• Heat-treated alloy steel, interchangeable fluid cyclinders
• Three-rib API-7 urethane insert valves and seats
• Replaceable-type element oil filter and oil pressure gauge
• Threaded valve covers
• Plated piston rods
• Complete piston washing and lubrication system
Optional Equipment
• 7,500 PSI fluid end modules
• Steel skid under pump only
• Large steel skid with non-skid decking
• Centrifugal suction charging pump
• Rubber valve inserts
• Suction and/or discharge dampeners
• Oil heat exchanger
• External electric powered lube pump
• Fabricated suction manifold
• Custom packaging available
• Full open valves
| Piston Cylinder | Displacement | Maximum PSI | Pump RPM | Jackshaft RPM | |||||
| Diameter | Per Revolution | Per Minute | |||||||
| Inch | mm | Gal. | Lit. | Gal. | Lit. | PSI | Kg/sq.cm2 | 115 | 504 |
| 7 | 178 | 5.5 | 20.82 | 632 | 2,392 | 3,905 | 275 | ||
| 6.5 | 165 | 4.74 | 17.94 | 545 | 2,063 | 4,527 | 318 | ||
| 6 | 152 | 4.04 | 15.29 | 465 | 1,760 | 5,314 | 374 | ||
| 5.5 | 140 | 3.40 | 12.87 | 390 | 1,476 | 6,324 | 445 | ||
| 5 | 127 | 2.80 | 10.60 | 323 | 1,223 | 7,500 | 527 | ||