|
|
Technology
Assessment & Research (TA&R) Program
| Project
Number |
13 |
| Date of Summary |
September 30, 1985 |
| Subject |
Fluidic Pulser for Mud Pulse
Telemetry |
| Performing Activity |
Harry Diamond Laboratories |
| Principal Investigator |
Mr. Allen Holmes |
| Contracting Agency |
Minerals Management Service |
| Estimated Completion |
Complete |
| Description |
Develop technology for using
fluidic controlled flow for mud pulse telemetry. Mud pulse telemetry is a system of
obtaining downhole digitized data while drilling by pulsing through the drill mud. |
| Progress |
Complete. The characteristics of
drilling mud as well as the geometry downhole and the needed rates of mud circulation were
adequate for fluidic control hardware. Several designs of fluidic control valves were
tested using both water and drilling muds. A final experimental model, which has four
vortex stages, was developed for use in a 4+ inch drill pipe. After preliminary tests in a short flow loop, the pulsar was transferred to Louisiana State University Well Control
Research Facility for further evaluation. Tests in a 10,000 foot flow loop, using water
and three 8.9 ppg water-base muds have produced clear transmissions at frequencies up to
13 Hz. The limiting frequency is a function of the pulsar solenoid, not the fluidic
design.
Testing on heavier muds and oil-based muds will continue at
Louisiana State University. Calculations are being made on transmission rates required for
reliable and sufficient mud pulse telemetry data suitable for emergency well control
operations. The project was transferred to Louisiana State University, Project
No. 8. |
| Reports |
AA (827
KB)
 |
Holmes, A. B., Gehman, S. E.,
Fluidic Approach to the Design of a Mud Pulser for Bore Hole Telemetry Applications During
Drilling, Harry Diamond Laboratories, HDL-TM-79-21, Harry Diamond Laboratories, Silver
Spring, Maryland, August 1979. |
| AB (1.243
KB)
|
Holmes, A. B., Fluidic Mud Pulse
Telemetry Technology Investigations for Measurement While Drilling Applications, Harry
Diamond Laboratories, Silver Spring, Maryland, November 1980 (Unpublished report). |
| AC (776
KB)
|
Holmes, A. B., The Fluidic
Approach to Mud Pulser Design for Measurement While Drilling Systems, Harry Diamond
Laboratories, Silver Spring, Maryland, September 1982 (Unpublished report). |
| AD (1.555
KB)
|
Holmes, A. B., The Fluidic
Approach to Mud Pulser Value Design for Measurement While Drilling Applications, Report
No. HDL-TR-2058, Harry Diamond Laboratories, Silver Spring, Maryland, November 1985. |
|
|
|
|
