What will affect the downhole motors drilling life?

Details of the downhole motors

In the oil and gas drilling industry, efficient drilling techniques are crucial for successful exploration and production operations.

Downhole motors, also known as mud motors or drilling motors, play a vital role in the drilling process.

Downhole motors are used to generate additional torque and rotation, enabling efficient drilling of directional and horizontal wells.

What is a Downhole Motor?

Downhole motor (PDM drill) is a volumetric downhole power drilling tool that uses drilling fluid as power and converts liquid pressure energy into mechanical energy.?When the mud pumped by the mud pump flows into the motor through the Dump Assembly, a certain pressure difference is formed between the inlet and the outlet of the motor, pushing the rotor to rotate about the axis of the stator, and transmitting the speed and torque to the drill through the universal shaft and the transmission shaft?to achieve drilling operations.

What are the Components of a Downhole Motor?

Power section Assembly

The power section is the primary component responsible for generating the torque and rotation required for drilling.?

It comprises a rotor and a stator, which work together to convert the hydraulic power from the drilling fluid into mechanical power.

The rotor is a helical-shaped steel bar that rotates inside the stator, a rubber-like material with a helical cavity.

As the drilling fluid flows through the power section, it creates pressure that causes the rotor to rotate within the stator.?The Power Section?is the heart of the?drilling motor, which determines the dynamic performance.?

Coupling Assembly

The function of cardan shaft is to convert planetary motion into fixed constant rotation of drive shaft, to transmit torque and speed from motor to the drive shaft, and to the bit.

Downhole motor shall be disassemblied as quickly as possible after use to examine cardan shaft. If it is found out that wear degree is over?maintenance standard, relevant consumable components shall be changed promptly. If not, downhole motor can not be running normally?due to over run time of cardan shaft.

Bearing Assembly

The bearing assembly?is responsible for supporting the axial and radial loads generated during the drilling process.

It contains various types of bearings, such as radial and thrust bearings, which ensure smooth and stable rotation of the drill bit.

Drill bit

The drill bit is the cutting tool used to break and remove rock formations as it rotates. It can be either a roller cone bit or a fixed cutter bit, depending on the type of formation being drilled.

Bit?Selection:?

For?bit?selection,?it?is?important?to?combine?and?match the downhole motors?to?be?used.?It?relates?to?success?of?downhole?motor?application.?

How Does a Downhole Motor Work?

The operation of a downhole motor begins with the drilling fluid, also known as drilling mud?or mud motors, being pumped down the drill string.

Downhole motors basically consist of a helical rotor and a rubber coated stator housing. When the drill mud flows through the motor, the cavities between the stator and rotor are filled. The rotor then performs an eccentric rotational motion that is forwarded to the drill bit as drive power.

As the drill bit rotates, it cuts through the rock formations, creating borehole. The drilling fluid carries the cuttings back to the surface, where they are separated from the fluid and discarded. The drilling fluid is then recirculated back down the drill string, continuing the drilling process.

What will affect the downhole motors drilling life?

Many factors will affect the downhole motors drilling life, such as?rotor/stator design, downhole temperature, drilling fluid, stator elastomer properties, motor speed, and differential pressure?on the stator life；

What we can do for our clients?

SXYS TOOLS specializes in design and manufacture of downhole mud motors. Our downhole mud motors in difference sizes are available from 1-11/16”?OD (43mm) to 11-1/4”?OD (286mm) and models mainly include adjustable bend housing type, straight housing type, fixed bend housing type, water-based mud type, oil-based mud type, and salty-based mud type. Moreover, we provide customized service for the spare parts according to customers' drawings, our downhole motor is widely used in oil & gas kinds of drilling applications.

Welcome to contact us or talk with us for your demands of the downhole motors.

Thank you!

Ying M

Email to [email protected]?