2 7/8~14 3/4 Quot Industrial Oil Well API 7-1 Downhole Mud Motor for Oilfield Drilling Workover Rig Petroleum Equipment Machine Spare Parts Assembly Tool

Product Description

Mud Motor for Oil Well Drilling 

 Downhole Mud Motor

SGPE manufactures and supplies Mud Motors for oil and gas drilling, directional drilling, horizontal drilling, workover and well-intervention applications. Also known as a Downhole Drilling Motor, Positive Displacement Motor (PDM) or Directional Drilling Motor, the Mud Motor converts hydraulic energy from circulating drilling fluid into mechanical rotational power at the drill bit. This allows the bit to rotate downhole even when the entire drill string is not rotating, making the tool particularly valuable for directional drilling, slide drilling, kick-off operations and performance drilling.

The main operating principle is based on a positive displacement power section consisting of a helical rotor operating inside an elastomer-lined stator. When drilling fluid is pumped through the cavities formed between the rotor and stator, differential pressure causes the rotor to turn. The resulting eccentric rotation is transferred through the transmission or universal shaft assembly to the bearing mandrel and ultimately to the drill bit. Different rotor/stator lobe configurations and power-section lengths can be selected to provide different combinations of torque, bit speed, pressure drop and flow capacity.

A typical SGPE Mud Motor can include a bypass valve assembly, anti-drop assembly, rotor/stator power section, adjustable or fixed bent housing, universal shaft assembly, bearing section and bit box. Each section plays an important role in the overall drilling performance and should be selected according to the planned bottom-hole assembly and well trajectory.

Item	Specification
Product Name	Mud Motor
Alternative Name	Downhole Motor / PDM / Downhole Drilling Motor
Motor Type	Positive Displacement Motor
Main Application	Directional / Horizontal / Performance Drilling
Motor OD	Model-Specific
Hole Size	Model-Specific
Power Section	Rotor + Elastomer-Lined Stator
Lobe Configuration	3:4 / 4:5 / 5:6 / 7:8 / Custom
Flow Rate	Model-Specific
Bit Speed	Model-Specific
Differential Pressure	Model-Specific
Torque	Model-Specific
Housing	Straight / Fixed Bent / Adjustable Bent
Bent Angle	Project-Specific
Bearing	Axial + Radial Bearing Assembly
Top Connection	NC / REG / Project-Specific
Bit Connection	REG / Project-Specific
Mud System	WBM / OBM / Special Mud
High Temperature Option	Available
MWD / LWD Compatibility	Available
Spare Power Section	Available
Bearing / Redress Kit	Available
Custom Configuration	Available
Brand	SGPE
Origin	China

For directional drilling applications, an adjustable bent housing can be supplied to create a controlled offset between the motor axis and the bit. By orienting the bend in the required toolface direction, the operator can steer the well while slide drilling. Adjustable bend settings allow the same motor platform to be configured for different build-rate requirements. Straight or near-straight configurations can also be selected for rotary drilling and performance applications where directional response is less important.

The power section is one of the most important elements in Mud Motor selection. High-torque configurations can be selected for demanding formations and larger bits, while higher-speed configurations may be preferred for applications requiring increased bit RPM. The actual motor output depends on drilling-fluid flow rate, differential pressure, rotor/stator geometry and operating condition. For this reason, torque and RPM should always be evaluated together with the recommended flow range and maximum operating differential pressure rather than treated as fixed standalone values.

The bearing assembly supports axial and radial loads generated during drilling. Thrust bearings carry weight-on-bit loads, while radial bearings support the rotating drive shaft and help maintain bit stability. Depending on the design, drilling fluid can also be used for bearing lubrication and cooling. Bearing condition, expected WOB, side loading, drilling hours and formation severity should therefore be considered when selecting a motor for long drilling intervals.

Component	Main Function
Top Sub	Connects Mud Motor to Drill String
Dump / Bypass Valve	Controls Fluid Bypass
Anti-Drop Assembly	Helps Retain Internal Components
Power Section	Generates Torque and Rotation
Rotor	Rotating Element
Stator	Stationary Elastomer-Lined Element
Bent Housing	Provides Directional Offset
Universal Joint / Transmission Shaft	Transfers Eccentric Rotor Motion
Bearing Assembly	Supports Axial and Radial Loads
Drive Shaft	Transfers Torque to Bit
Bit Box	Connects to Drill Bit
Stabilizer	Optional BHA Stabilization

SGPE Mud Motors can be configured for use with water-based mud, oil-based mud and other approved drilling-fluid systems, subject to elastomer compatibility. Stator elastomer selection is especially important in high-temperature wells, oil-based mud systems and chemically aggressive fluids because temperature and fluid composition can affect elastomer swelling, hardness and interference fit. High-temperature or special-fluid configurations can be evaluated according to the specific drilling program.

Typical applications include vertical performance drilling, directional drilling, build sections, tangent sections, horizontal wells, sidetracking, re-entry drilling, extended-reach wells and selected workover operations. Mud Motors can also be combined with MWD/LWD tools, stabilizers, drill collars, non-magnetic drill collars and PDC or roller-cone bits as part of the bottom-hole assembly.

Top and bottom connections can be supplied to match the drilling string and bit requirements. Connection selection should consider motor OD, drill-string connection, bit connection, expected torque and the existing BHA configuration. Stabilized, slick, fixed-bend and adjustable-bend motor configurations can be reviewed according to the planned drilling application.

Nominal Motor OD	Approx. Metric OD	Typical Application Direction
1-11/16"	43 mm	Slim Hole / Intervention
2-1/8"	54 mm	Small Hole
2-7/8"	73 mm	Small Directional Hole
3-1/2"	89 mm	Small / Medium Hole
3-3/4"	95 mm	Medium Hole
4-3/4"	120 mm	6"-8" Hole Class
6-1/2"	165 mm	Large Directional Hole
6-3/4"	172 mm	Common 8-1/2" Hole Class
7-3/4"	197 mm	Larger Hole
8"	203 mm	Large Hole
9-5/8"	244 mm	Large Surface / Intermediate Hole

Quality control can include material verification, dimensional inspection, rotor/stator inspection, connection gauging, bearing inspection, hardness testing, NDT, assembly inspection and performance testing according to the ordered scope. Replacement power sections, rotors, stators, bearing assemblies, universal shafts, bypass components and other service parts can also be supplied for maintenance and overhaul.

For accurate quotation and Mud Motor selection, customers should provide the hole size, required motor OD, bit size and connection, drill-string connection, drilling-fluid type and density, minimum and maximum flow rate, available pump pressure, desired torque and RPM, expected differential pressure, well temperature, required bend angle, planned build rate, formation type, MWD/LWD configuration, expected WOB and operating depth. SGPE can then recommend the appropriate Mud Motor and power-section configuration for the drilling program.

Motor OD	Representative Hole Size Range
73 mm	Approx. 83-121 mm
89 mm	Approx. 105-143 mm
95 mm	Approx. 114-150 mm
120 mm	Approx. 152-200 mm
165 / 172 mm	Approx. 215-244 mm
197 / 203 mm	Approx. 244-311 mm
244 mm	Approx. 311-445 mm

 

 

 

 

Model	OD	Thread		Lobe	Stage	Flow Rate	Rotary Speed	Diff. Pressure
	mm	Up	Down			lpm	rpm	Mpa
5LZ185*7.0	185	4 1/2 REG	6 5/8 REG	5:6	5	985-1970	91-182	4
7LZ185*7.0	185	4 1/2 REG	6 5/8 REG	7:8	7	1164-2328	78-156	5.6
5LZ197*7.0	197	5 1/2 REG	6 5/8 REG	5:6	4	1113-2225	79-158	3.2
5LZ197*7.0I	197	5 1/2 REG	6 5/8 REG	5:6	5	1113-2225	79-158	4
H5LZ197*7.0	197	5 1/2 REG	6 5/8 REG	5:6	3.5	1500-2700	102-184	4.2
7LZ197*7.0	197	5 1/2 REG	6 5/8 REG	7:8	5	1230-2460	75-150	4
5LZ244*7.0	244	6 5/8 REG	6 5/8 REG	5:6	5	1650-3300	64-129	4
H5LZ244*7.0	244	6 5/8 REG	6 5/8 REG	5:6	3.9	2280-3720	93-151	4.6
7LZ244*7.0	244	6 5/8 REG	6 5/8 REG	7:8	5	2270-4540	68-135	4