CA2551316A1 - Rotary pulser - Google Patents
Rotary pulser Download PDFInfo
- Publication number
- CA2551316A1 CA2551316A1 CA002551316A CA2551316A CA2551316A1 CA 2551316 A1 CA2551316 A1 CA 2551316A1 CA 002551316 A CA002551316 A CA 002551316A CA 2551316 A CA2551316 A CA 2551316A CA 2551316 A1 CA2551316 A1 CA 2551316A1
- Authority
- CA
- Canada
- Prior art keywords
- windowed
- windowed restrictor
- controller
- restrictor
- fixed housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims abstract 6
- 238000000034 method Methods 0.000 claims 2
- 230000002441 reversible effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
- E21B47/24—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry by positive mud pulses using a flow restricting valve within the drill pipe
Abstract
An improved energy efficient intelligent rotary pulser for generating a mud pulse in a MWD (measurement while drilling) application. In the rotary pulser, a control circuit activates a brushless motor that rotates a windowed restrictor relative to a fixed housing to act as a shutter and window respectively. Opening of the windowed restrictor allows generally unrestrict ed mud flow. Closing of the windowed restrictor generally restricts mud flow. The windowed restricto r is powered both in opening and closing operations by the motor.
Claims (19)
1. A downhole measurement-while-drilling rotary pulser comprising a windowed restrictor movable between an open position which permits mud flow through a fixed housing having a flow passage and a restricted position which restricts mud flow through the fixed housing having a flow passage, the windowed restrictor powered between the open position and the restricted position by a reversible electric motor.
2. The rotary pulser of claim 1, wherein the windowed restrictor is movable between the open position and the restricted position in a reciprocating rotary motion relative to the fixed housing.
3. The rotary pulser of claim 2, wherein the fixed housing is held stationary and the windowed restrictor is rotatable, driven in rotation by the motor.
4. The rotary pulser of claim 1, further comprising a controller for controlling the electric motor.
5. The rotary pulser of claim 4 wherein the controller is adapted to sense the position of the windowed restrictor relative to the fixed housing.
6. The rotary pulser of claim 5 wherein the position of the windowed restrictor is adapted to be sensed when the mud flow through the flow passage is restricted, and wherein the amount and direction of rotations of the motor from that position are counted and stored by the controller.
7. The rotary pulser of claim 6 wherein the sensed position of the windowed restrictor is calibrated as the fully closed position of the windowed restrictor in controlling the windowed restrictor's travel during operation to avoid excess collision or frictional wear between the windowed restrictor and the windowed restrictor stop.
8. The rotary pulser of claim 7 wherein the controller senses the position of the windowed restrictor by sensing whether movement of the windowed restictor is impeded, and wherein the controller counts the number of rotations of the motor until the windowed restrictor is impeded and compares the number of rotations to an expected number of rotations to determine the position of the windowed restrictor with respect to the fixed housing.
9. The rotary pulser of claim 8 wherein the expected number of rotations is preset to allow a predetermined rate of mud flow past the windowed restrictor when the windowed restrictor is moved away from the fixed housing by the preset expected member of rotations.
10. The rotary pulser of claim 9 wherein the controller includes a debris clearing command that is initiated when the number of rotations counted is not equal to the expected number of rotations.
11. The rotary pulser of claim 10 wherein the debris clearing command causes the motor to reciprocate the windowed restrictor to dislodge any debris present between the windowed restrictor and the fixed housing.
12. A method for causing the generation of a pressure pulse in drilling mud by a controlled windowed restrictor valve comprising the steps of:
-~powering a rotary pulser windowed restrictor valve in a first direction using a rotary motor such that drilling mud is permitted to flow past a fixed housing; and -~powering the windowed restrictor in a second direction using the rotary motor such that drilling mud flow past the fixed housing is restricted, wherein the pressure pulse is generated.
-~powering a rotary pulser windowed restrictor valve in a first direction using a rotary motor such that drilling mud is permitted to flow past a fixed housing; and -~powering the windowed restrictor in a second direction using the rotary motor such that drilling mud flow past the fixed housing is restricted, wherein the pressure pulse is generated.
13. The method of claim 12 further comprising the step of cutting power to the motor to hold the windowed restrictor in a particular position within its range of motion to tailor the pressure and duration characteristics of a mud pulse.
14. A controller for use with a downhole measurement-while-drilling rotary pulser actuator, the controller comprising a sensor, memory, control circuitry, and an operator interface.
15. The controller of claim 14 wherein the sensor is a mud flow sensor, pressure sensor, temperature sensor, rotation-step counter, position sensor, velocity sensor, current level sensor, battery voltage sensor, timer, or error monitor.
16. The controller of claim 14 wherein the memory is adapted to store time-stamped or counted sensed events together with an event-type indication.
17. The controller of claim 14 wherein the control circuitry is programmable to cause an action within the actuator responsive to a sensed event, a time, an elapsed time, a series of sensed events, or any combination thereof.
18. The controller of claim 14 wherein the operator interface provides information from memory to the operator.
19. The controller of claim 14 wherein the operator interface allows an operator to alter the programming of the control circuitry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2551316A CA2551316C (en) | 2006-06-30 | 2006-06-30 | Rotary pulser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2551316A CA2551316C (en) | 2006-06-30 | 2006-06-30 | Rotary pulser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2551316A1 true CA2551316A1 (en) | 2007-12-30 |
| CA2551316C CA2551316C (en) | 2012-01-10 |
Family
ID=38878479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2551316A Active CA2551316C (en) | 2006-06-30 | 2006-06-30 | Rotary pulser |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2551316C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014071519A1 (en) * | 2012-11-06 | 2014-05-15 | Evolution Engineering Inc. | Measurement while drilling fluid pressure pulse generator |
| WO2014071514A1 (en) * | 2012-11-06 | 2014-05-15 | Evolution Engineering Inc. | Fluid pressure pulse generator and method of using same |
| WO2014124530A1 (en) * | 2013-02-12 | 2014-08-21 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus with pressure compensation device and pulser assembly housing |
| WO2014131125A1 (en) * | 2013-02-27 | 2014-09-04 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus and method of using same |
| US9476296B2 (en) | 2012-12-21 | 2016-10-25 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus with primary seal assembly, back up seal assembly and pressure compensation device and method of operating same |
| US9631487B2 (en) | 2014-06-27 | 2017-04-25 | Evolution Engineering Inc. | Fluid pressure pulse generator for a downhole telemetry tool |
| US10180059B2 (en) | 2016-12-20 | 2019-01-15 | Evolution Engineering Inc. | Telemetry tool with a fluid pressure pulse generator |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2932035A1 (en) | 2012-12-17 | 2015-10-21 | Evolution Engineering Inc. | Mud pulse telemetry apparatus with a pressure transducer and method of operating same |
| US10753201B2 (en) | 2012-12-17 | 2020-08-25 | Evolution Engineering Inc. | Mud pulse telemetry apparatus with a pressure transducer and method of operating same |
| US9574441B2 (en) | 2012-12-17 | 2017-02-21 | Evolution Engineering Inc. | Downhole telemetry signal modulation using pressure pulses of multiple pulse heights |
| CA2895683A1 (en) | 2014-06-27 | 2015-12-27 | Evolution Engineering Inc. | Fluid pressure pulse generator for a downhole telemetry tool |
| CA2895681A1 (en) | 2014-06-27 | 2015-12-27 | Evolution Engineering Inc. | Fluid pressure pulse generator for a downhole telemetry tool |
-
2006
- 2006-06-30 CA CA2551316A patent/CA2551316C/en active Active
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9494035B2 (en) | 2012-11-06 | 2016-11-15 | Evolution Engineering Inc. | Fluid pressure pulse generator and method of using same |
| EP3045654A1 (en) * | 2012-11-06 | 2016-07-20 | Evolution Engineering Inc. | Measurement while drilling fluid pressure pulse generator |
| WO2014071519A1 (en) * | 2012-11-06 | 2014-05-15 | Evolution Engineering Inc. | Measurement while drilling fluid pressure pulse generator |
| US9828852B2 (en) | 2012-11-06 | 2017-11-28 | Evolution Engineering Inc. | Fluid pressure pulse generator and method of using same |
| US9500075B2 (en) | 2012-11-06 | 2016-11-22 | Evolution Engineering Inc. | Measurement while drilling fluid pressure pulse generator |
| US9422809B2 (en) | 2012-11-06 | 2016-08-23 | Evolution Engineering Inc. | Fluid pressure pulse generator and method of using same |
| US9617849B2 (en) | 2012-11-06 | 2017-04-11 | Evolution Engineering Inc. | Fluid pressure pulse generator with low and high flow modes for wellbore telemetry and method of using same |
| WO2014071514A1 (en) * | 2012-11-06 | 2014-05-15 | Evolution Engineering Inc. | Fluid pressure pulse generator and method of using same |
| US9476296B2 (en) | 2012-12-21 | 2016-10-25 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus with primary seal assembly, back up seal assembly and pressure compensation device and method of operating same |
| US9528370B2 (en) | 2012-12-21 | 2016-12-27 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus with primary seal assembly, back up seal assembly and pressure compensation device and method of operating same |
| US9915146B2 (en) | 2012-12-21 | 2018-03-13 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus with primary seal assembly, back up seal assembly and pressure compensation device and method of operating same |
| WO2014124530A1 (en) * | 2013-02-12 | 2014-08-21 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus with pressure compensation device and pulser assembly housing |
| US9464521B2 (en) | 2013-02-12 | 2016-10-11 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus with pressure compensation device and pulser assembly housing |
| US9528371B2 (en) | 2013-02-27 | 2016-12-27 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus and method of using same |
| WO2014131125A1 (en) * | 2013-02-27 | 2014-09-04 | Evolution Engineering Inc. | Fluid pressure pulse generating apparatus and method of using same |
| US9631487B2 (en) | 2014-06-27 | 2017-04-25 | Evolution Engineering Inc. | Fluid pressure pulse generator for a downhole telemetry tool |
| US10180059B2 (en) | 2016-12-20 | 2019-01-15 | Evolution Engineering Inc. | Telemetry tool with a fluid pressure pulse generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2551316C (en) | 2012-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |