Introduction of Drilling Motors

DeRun Energy drilling motor is a positive displacement motor. High pressure drilling fluid flows into the drilling motors, thereby enabling the hydraulic energy to be converted into mechanical energy, at the same time, the rotor drives the shaft and bit to rotate to achieve the purpose of drilling.

DeRun Energy produces LZ73, LZ89, LZ95, LZ102, LZ120, LZ127, LZ146, LZ165, LZ172, LZ185, LZ197, LZ203, LZ216, LZ244, LZ286 and other types of drilling motors. They are for drilling diameter of 88.9-660mm.DeRun Energy also design and develop drilling motors with special sizes, different structural features and operating characteristics in accordance with the user's requirements, thus forming different varieties. At present, in addition to ordinary straight drilling motors, DeRun Energy can also provide the following types of drilling motors:

Three types of top sub connections

1.Bent drilling motors: The bent angle on the universal shaft can meet different kickoff requirement, there are single-bent and double-bent available.

2.Bent angle adjustable drilling motors: The bent angle of the drilling motors can be adjusted on well surface which enhance the extension of kicking off.

3.Extension drilling motors: On the basis of the ordinary drilling motor, improve motor torque to make the bit drilling quickly by increasing motor stage.

4.Hollow drilling motors: To meet the needs of high flow rate solids carrying in drilling, hollow rotors with carbide nozzles of different sizes are adopted, which can increase the input flow rate and the horsepower of drill bit.

5.Drilling motors with high kick-off rate: Unique structural design, shorter body, bent point closer to the drill bit, and kick-off rate of up to >1°/m.

6.Saturated saltwater mud-resistant drilling motors: To maintain long time operation of drilling motors in saturated saltwater mud, special rotor coating is adopted to provide better corrosion and wear resistance.

7.High-temperature drilling motors: In order to improve the high temperature resistance of the stator rubber of the drilling motors, to meet the drilling requirements in high geothermal gradient region and deep and ultra-deep well drilling requirements, high-temperature resistant rubber is adopted to increase the temperature resistance of motor above 150 ℃.

8.Sealed driving shaft drilling motors: The ordinary mud lubricated driving shaft is replaced with oil lubricated seal driving shaft, which improves the working conditions of the thrust and radial bearings, thus extending the service life of the drilling motors.

Features & Advantages of Drilling Motors

1. Adjustable Bend Housing

In directional wells, horizontal wells, highly-deviated wells and other special processes, adjustable bend housing drilling motor adopts new universal shaft design to realize the adjustment of 19 different angles from 0 to 4° as well as overcome the shortcomings of erodible exposed surface and short service life of the petal universal shaft.

2. High-Abrasion Housing

By using precision machining technology and plasma surfacing technology to highly improve motor abrasion resistance ability and stabilize motor kick-off rates.

3. Even Wall Drilling Motor

By changing the shape of the stator case in a rational way, even wall drilling motor can help achieve thin and uniform stator rubber layer to overcome the technical deficiencies in the stator of conventional drilling motors. This type of drilling motor is characterized by high thermal efficiency, sound thermal expansion and better sealing result. It has wider application, more optimized structure and lighter body mass, which help improve the working environment of drilling motors, thus prolonging the service life.

4. High-Temperature Resistant Motor

High-temperature resistant motor adopts the stator rubber made by special processes formula, to ensure the normal operation at a high temperature of 150℃, which is suitable for high temperature well and ultra-deep well drilling.

5. Rotor Surface Treatment

Special chromium plating method can control the ratio of the valley/peak chromium coating to 1:1.Tungsten carbide coating of rotor can enable the rotor to work normally in saturated saltwater mud, which successfully prevents the corrosion of chrome plated rotor by saturated saltwater.

6. Replaceable Sleeve Stabilizer

In order to meet the needs of different drilling condition, different types of stabilizers is equipped on the housing of the driving shaft: fixed and replaceable type available.