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Anti Drop Downhole Motors

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Overview

At present, our production which is downhole motor with a anti-drop has applied the national patent. The anti-drop screw drilling downhole motor produced by our company is convenient to use. Besides, its structure is simple. Screw drilling Downhole Motors with anti-drop may prevent droping accident, that's the reason why anti-drop downhole motors improve drilling efficiency.


Downhole Motors with a Anti-drop Rotor

      Principle: Downhole motor is a kind of downhole dynamic drilling tool upon the power of drilling mud. Mud stream from the outlet of mud pump flows through a by-pass valve into the motor. This stream produces pressure loss at both inlet and outlet of the pump to push the rotor into rotating, and to transmit the torque and speed onto the bit. The downhole motor property mainly depends upon its property parameters.

      Constitution: Downhole motor is composed of five assemblies: by-pass valve, motor, anti-drop, cardan shaft and drive shaft.

      The down-hole motor is a positive-displacement down-hole motor. It converts the high pressure fluid power of the mud into the mechanical energy of drill bit rotation. The motor is widely used in the drilling, making inclination, adjusting azimuth, coring, reaming, side tracking and work over for the directional wells, horizontal wells side tracked wells and straight wells of oilfields and coal mines. In addition, it is suitable for compound drilling and traversing and other special works.

Table for anti-drop downhole motors' specifications and models:

Code of motor

Unit

5LZ57×7.0

5LZ60×7.0

5LZ73×7.0

5LZ89×7.0

5LZ95×7.0

7LZ120×7.0

Recommend Hole Size

mm

83-121

83-121

83-121

105-143

114-150

152-200

Recommend Hole Size

in

31/4-43/4

31/4-43/5

31/4-45/6

41/8-56/8

41/8-57/8

6-77/8

Input flow Rate

L/S

1.5-3.5

1.5-3.5

2.0-4.0

3.0-8.0

5.0-12.0

8.0-16.0

Motor Pressure Loss

MPa

3.2

3.2

3.2

3.2

3.2

3.2

Speed of the Bit

r/min

185-430

220-520

80-160

147-392

140-320

80-180

Working Torque

N.m

200

183

615

504

710

1850

Delay Dynamic Torque

N.m

350

320

1077

882

1240

3200

Output Power

KW

4.3-10.1

4.3-10.1

5.8-11.5

8.64-23.0

10.5-25.0

23.0-47.0

Recommend Drilling Weight

KN

5

5

12

20

21

64

Maxing Drilling Weight

KN

10

10

25

30

40

106

Thread Connection Top

 

11/2REG

11/2REG

23/8REG

27/8REG

27/8REG

31/2REG

Thread Connection Bottom

 

11/2REG

11/2REG

23/8REG

27/8REG

27/8REG

31/2REG

The Drill Length

mm

2822

2822

3423

2911

3920

5039


Code of motor

Unit

5LZ65×7.0v

5LZ165×7.0v

5LZ172×7.0v

5LZ172.5×7.0v

5LZ172.5×7.0v

Recommend Hole Size

mm

215-244

215-244

215-244

215-244

215-244

Recommend Hole Size

in

81/8-96/8

81/8-96/8

81/8-95/8

81/8-95/8

81/8-95/8

Input flow Rate

L/S

18.0-30.0

18.0-30.0

18.0-30.0

20.0-35.0

20.0-35.0

Motor Pressure Loss

MPa

3.2

4

4

4

4

Speed of the Bit

r/min

111-167

120-180

120-180

115-180

75-180

Working Torque

N.m

4440

5135

5135

6452

6627

Delay Dynamic Torque

N.m

7770

8987

8987

11299

11420

Output Power

KW

57.6-86.4

72.0-108.0

72.0-108.0

86.4-151.2

59.5-108.6

Recommend Drilling Weight

KN

80

90

90

100

80

Maxing Drilling Weight

KN

160

180

180

200

160

Thread Connection Top

 

41/2REG

41/2REG

41/2REG

41/2REG

41/2REG

Thread Connection Bottom

 

41/2REG

41/2REG

41/2REG

41/2REG

41/2REG

The Drill Length

mm

7408

7748

7391

8031

8631

Product Categories : Drilling Motors > Motors For Drilling

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