API 7K Mud Pump/ Oilfield Drilling Pump / Triplex Pump / High Pressure Pump / Mud Pump for Deep Well Drilling Rig.Mud Pump, or mud pump in its abbreviated form, serves as a generalized term for a variety of pumps, with specific pump types varying across different regions and practices.
Mud Pump, or mud pump in its abbreviated form, serves as a generalized term for a variety of pumps, with specific pump types varying across different regions and practices. Below is a brief introduction to mud pumps, primarily focusing on the type commonly used in oil drilling:
Mud pumps are mechanical devices designed to deliver mud, water, or other flushing fluids into drilling holes during drilling operations. They constitute an essential component of drilling machinery and equipment.
The primary role of mud pumps in the drilling process is to inject mud into the wellbore along with the drill bit. This mud serves several purposes:
In typical positive-cycle drilling operations, mud pumps deliver flushing media such as water, mud, or polymer flushing fluid under a certain pressure. These fluids are then transported through high-pressure hoses, taps, and the center hole of the drill string to the bottom of the drill bit. This process achieves the dual purpose of cooling the drill bit and removing and transporting drill cuttings to the surface.
Mud pumps commonly used are of the piston or plunger type. Powered by a motive force, the crankshaft of the pump rotates, driving the crosshead and subsequently causing the piston or plunger to reciprocate within the pump cylinder. The alternating action of the suction and discharge valves facilitates the delivery and recycling of flushing fluids.
In summary, mud pumps are crucial for ensuring the efficiency and safety of drilling operations. Their ability to deliver flushing fluids under pressure enables them to play a pivotal role in cooling, cleaning, stabilizing, and advancing the drilling process.
| Type | Horizontal triplex single-acting piston pump | Gear type | mandibular tooth | |
| Rated Input Power(kW/hp) | 1193/1600 | Gear ratio | 4.206:1 | |
| Rated strokes (strokes/minute) | 120 | Oily | Forced , splash | |
| Stroke length(mm/in) | 305/12'' | Valve cavity | API-7# | |
| Suction port connection size | 12''(305mm) | Discharge outlet connection size | 5'' | |
| Mainframe weight (kg) | 24791 | Overall Dimension(L×W×H) | 4615×3276×2688mm | |
| Pump speed (strokes/min) | Rated Power(HP) | Cylinder Liner Diameter (in) and Rated Pressure (Mpa)/(psi) | |||||
| 7 | 2006/3/4 | 2006/1/4 | 6 | 2005/1/2 | 5 | ||
| 24.19 | 25.46 | 29.66 | 32.16 | 34.5 | 35 | ||
| 3508 | 3692 | 4300 | 4663 | 5000 | 5075 | ||
| engine displacement (L/S)/(g pm) | |||||||
| 120 | 1600 | 45.41 | 42.23 | 36.2 | 33.36 | 28.04 | 23.17 |
| 720 | 669 | 574 | 529 | 444 | 367 | ||
| 110 | 1467 | 41.63 | 38.71 | 33.19 | 30.58 | 25.7 | 21.24 |
| 660 | 614 | 526 | 485 | 407 | 337 | ||
| 100 | 1333 | 37.84 | 35.19 | 30.17 | 27.8 | 23.36 | 19.31 |
| 600 | 558 | 478 | 441 | 370 | 306 | ||
| 90 | 1200 | 34.06 | 31.67 | 27.15 | 25.02 | 21.03 | 17.38 |
| 540 | 502 | 430 | 397 | 333 | 275 | ||
| 1 | 0.3784 | 0.3519 | 0.3017 | 0.278 | 0.2337 | 0.1931 | |
| 6 | 5.5778 | 4.7778 | 4.4111 | 3.7 | 3.0556 | ||
| Volumetric efficiency at 100%, mechanical efficiency at 90% | |||||||
The oilfield drilling pump, commonly known as the mud pump, is the high-pressure heart of the rig’s circulatory system. This powerful reciprocating pump is tasked with circulating drilling fluid down the drill string and back up the annulus. Its critical functions include cleaning the drill bit, carrying cuttings to the surface, and maintaining wellbore stability. Designed to withstand extreme pressures and abrasive fluids, its key components—like the fluid end, pistons, liners, and valves—are built for durability and performance. Reliable operation of this essential equipment is paramount for safe, efficient, and continuous drilling progress, making it one of the most vital assets on the drill floor.
