(004)Pulser Testing

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Testing Objectives
At the completion of this presentation you should be able to:
1. Describe the important differences between the MK VI, VII, & VIII pulsers.
2. You will be able to test the pulser and determine whether it should be used.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
The Pulser
The central component of all four systems
The same pulser can be used on all four systems
There are three current versions of the pulser

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
The Pulser
Generates electrical and hydraulic power

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser’s Hydraulic Power
Operates a poppet/orifice valve that intermittently restricts the fluid flow, producing a pressure increase, or pulse. These pulses are detected on the surface.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser’s
Hydraulic
System
Control Valve
Main Valve
Pump
Piston
Valve
Bypass Port
Piston
Bypass Port
Low Pressure
Fluid
High Pressure
Fluid
Port Seal
Flow
Restrictor

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser’s
Hydraulic System
Control valve open
Flow through control valve
Allows flow through main valve
Flow through main
Pressure drop across flow restrictor moves port seal down against spring
Valve bypass port opens
Poppet fully retracted

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser’s
Hydraulic System
Control valve closed
No flow through control valve
Stops flow through main valve
No flow through main valve
Spring moves port seal up
Valve bypass port closes
Piston moves up
Poppet partially extended

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser’s
Hydraulic System
Control valve closed
No flow through control valve
Stops flow through main valve
No flow through main valve
Spring moves port seal up
Valve bypass port closes
Piston moves up
Piston bypass port opens
Poppet fully extended

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser’s
Hydraulic
System

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser’s Hydraulic System
The control valve is operated by a signal from the telemetry controller. Closing the control valve causes the poppet to extend into the orifice.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser’s Electrical Power
Generator consists of six fixed coils and eight rotating magnets.
Electrical power is supplied to the sondes attached to the pulser.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
The Parts of a Pulser
2 inch case
Bulkhead
Poppet shaft
Poppet shaft
housing
Pump outer case
Intermediate case

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Boot
Booted Vs. Bootless Pulser
Bootless

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Booted Vs. Bootless Pulser
Boot
Gas permeable
Susceptible to damage
No moving parts
Transmits external pressure to pulser’s internal fluid

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Booted Vs. Bootless Pulser
Bootless
Increased reliability
Requires seal pack assembly change every 100 or 200 hours depending on temperature
Moving parts
Transmits external pressure to pulser’s internal fluid

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Connections
7-pin Amphenol
Connector
4 Cond. Rotational
Connector

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Connection
7-pin Amphenol
Used for DWD
Careful assembly required to avoid damage
Uses coil cord

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Connection
4-Conductor Rotational Connector
Used for Solar
Easy to make-up connection
Increased reliability

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
The Four Current Pulsers
Mark 6 DWD
Mark 7 Solar
Mark 8 Solar
Mark 8 DWD

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Mark 6 DWD
7-Pin Amphenol Connector
Maximum Temperature 175°C
Full Stroke (0.374 in.)

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Mark 7 Solar
4-Conductor Rotational Connector
Maximum Temperature 200°C
Full Stroke (0.374 in.)

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Mark 8 Solar
4-Conductor Rotational Connector
Maximum Temperature 200°C
Half Stroke (0.187 in.)

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Mark 8 DWD
7-Pin Amphenol Connector
Maximum Temperature 175°C
Half Stroke (0.187 in.)

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
How to Identify Pulsers
Mark 6 DWD
7-pin amphenol connector
Lower filling screw NOT marked 8
Poppet extends 9.5 mm (0.374 in.)
Mark 7 Solar
Rotational connector
Lower filling screw NOT marked 8
Poppet extends 9.5 mm (0.374 in.)

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
How to Identify Pulsers
Lower Filling Screw

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
How to Identify Pulsers
Mark 8 Solar
Rotational connector
Lower filling screw MAY BE marked 8
Poppet extends 4.8 mm (0.187 in.)
Mark 8 DWD
7-pin amphenol connector
Lower filling screw MAY BE marked 8
Poppet extends 4.8 mm (0.187 in.)

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Testing the Pulser
Two tests
Resistance
Tests electrical resistance of the generator coils and control valve solenoid
Extension/retraction
Tests hydraulic system

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Test Equipment
DWD Electronic Test Kit
MWD Pulser Test Set and Leads
Digital Multi-meter
Coil Cord Pulser to MEP
Pulser Ground Lead
BNC Female/Banana Connector (2)
BNC Cable (36 inch)
Poppet Retraction Tool

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Additional Test Equipment for Solar Pulsers
Solar 175 Test Cable Amphenol/9-pin
4-pin Male Rotational Test Connector

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
MWD Pulser Test Set
9V Switch

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Digital Multi-meter

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Coil Cord
7-Pin Female
Amphenol Connector
7-Pin Female
Amphenol Connector

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Coil Cord
A
B
C
D
E
F
G
A
B
C
D
E
F
G
Probe
Pulser

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Equipment
Pulser Ground Lead
BNC/Banana adapter
BNC cable (36 inch)

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension Test Equipment
Poppet retraction Tool

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Equipment
Solar 175 Test Cable
Amphenol/7-pin
4-pin Male Rotational
Test Connector

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Purpose
Tests the pulser generator coils for shorts and open circuits
Tests the pulser control valve solenoid for shorts and open circuits

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Procedure
Set the 9v switch on the MWD Pulser Test Set to off
Set the meter to measure resistance and ensure that the scale selected is appropriate for the resistance expected.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Case Lead Continuity
Measure the pulser case lead resistance
A reading of 0-1 ohms indicates continuity.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Procedure
Connect the meter to the ohms out ports on the test set using the BNC cable and adapters.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Procedure
Connect the pulser case lead to the case port on the test set and to the pulser with the alligator clip.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Procedure
Connect the coil cord from the pulser to the pulser port on the test set.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Procedure
Check resistance readings by rotating switches S1 and S2 through all positions shown on the Pulser Test Form.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
DWD Pulser Resistances

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Solar Pulser Resistances

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Procedure
A to A
A to B
A to C
A to F

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Procedure
If any readings are out of specification, check the coil cord and the pulser test set and isolate the defective part.
Then complete a Failure Report.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Resistance Test Procedure
What was all that about?

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Purpose
Basic test of the hydraulic system
Tests the seals on the main valve, control valve, the pump rams’ seals, and the piston seal
Tests function of both the main and control valves

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Clean the pulser; pay particular attention to the three threaded location holes on the pump housing.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Install an impeller assembly over the intermediate case.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Prepare the poppet retraction tool by screwing the adjuster nut fully onto the shaft
Adjuster Nut

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Slide the retraction tool over the poppet end of the pulser.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Insert the locating screws into the threaded holes on the pulser and hand tighten.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Screw the adjuster nut against the poppet shaft until the first groove on the retraction tool’s shaft is aligned with the face of the locking ring.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Connect the pulser to the poppet extend socket on the MWD Pulser Test Set using the coil cord
Turn on the 9v switch.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Rotate the impeller assembly. The retraction tool’s shaft should extend to reveal the second groove on the shaft.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Monitor the extension; the retraction tool’s shaft must remain extended for 2 minutes without bleeding off and retracting all the way to the first groove.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Rotate the impeller assembly until the retraction tool’s shaft again extends to reveal the second groove on the shaft.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Turn off the 9v switch.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Monitor retraction
For a Booted Pulser
The retraction tool’s shaft should retract to the first groove in less than 2 seconds.
For a Bootless Pulser
The retraction tool’s shaft should retract to the first groove in about 8 seconds.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Record the results on the Pulser Test Sheet.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
Should the pulser fail to meet the above procedure, return pulser for R&M, stating “Retraction Fault”.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Pulser Extension/Retraction Test Procedure
What was all that about?

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Testing an MWD Pulser Test Set
Test S1 and S2 Switches
Test Ohms Out and Case Ports
Test Pulser Connector
Test Poppet Extend Connector
Test Internal Batteries

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test S1 and S2 Switches
Set the volt/ohm meter to ohms
Connect the test leads to the black and white ohms out ports.
A to A

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test S1 and S2 Switches
Check resistance readings by rotating switches S1 and S2 through all positions on Table 1

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test S1 and S2 Switches
Table 1

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test S1 and S2 Switches
A to B

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test S1 and S2 Switches
G to G

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Ohms Out & Case Ports
Connect the test leads to the white ohms out port and the black case port.
S2 A

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Ohms Out & Case Ports
Rotate switch S2 through positions A to G.
All positions should read infinity.
S2 G

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Ohms Out & Case Ports
Connect the test leads to the black ohms out port and the black case port.
S1 A

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Ohms Out & Case Ports
Rotate switch S1 through positions A to G.
All positions should read infinity.
S1 G

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Ohms Out & Case Ports
Move switch S1 to the case position.
The meter should read 0-1 ohms.
S1 Case

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Pulser Connector
Connect the test leads to the black ohms out port and pin A inside the pulser connector on the test set.
Pin A
S1 A

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Pulser Connector
Rotate switch S1 through positions A to case. The meter should read infinity in all positions except A, which should read 0-1 ohms.
Pin A
S1 Case

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Pulser Connector
Repeat this for pins B through G on the pulser connector for all positions shown on Table 2

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Pulser Connector
Table 2

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Pulser Connector
Connect the test leads to the white ohms out port and pin A inside the pulser connector.
Pin A
S2 A

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Pulser Connector
Rotate switch S2 through positions A to G. The meter should read infinity in all positions except A, which should read 0-1 ohms.
Pin A
S2 G

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Pulser Connector
Repeat this for pins B through G on the pulser connector for all positions shown on on Table 2

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Poppet Extend Connector
Ensure that the 9v switch is off.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Poppet Extend Connector
Place one test lead in the white battery check port and touch the other lead to each pin inside the poppet extend connector.
Pin A

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Poppet Extend Connector
Each pin should read infinity except pin A which should read 0-1 ohms.
Pin B

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Poppet Extend Connector
Remove the test lead from the white battery check port and place it in the black battery check port.
Touch the other lead to each pin inside the poppet extend connector.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Poppet Extend Connector
Pin A

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Poppet Extend Connector
Pin B

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Poppet Extend Connector
Each pin should read infinity except pin B which should read 0-1 ohms.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Internal Batteries
Set the meter to the DC voltage range to test the eight 1.5 volt AA battery cells (12 volts).

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Internal Batteries
Connect the test leads to the battery check ports. Black is negative, white is positive.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Internal Batteries
Check the internal battery voltage by switching the 9v switch on.
The meter should read greater than 10 volts.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Test Internal Batteries
Turn the 9v switch off and remove the meter leads from the battery check ports.

© 2001, Halliburton Energy Services, Inc.
January 31, 2001
Replace Internal Batteries
If the voltage is lower than 10 volts, open the test set and replace the eight 1.5 volt battery cells.