Fluid pressure pulse generator for a downhole telemetry tool
US-2015377014-A1 · Dec 31, 2015 · US
Mud pulse telemetry noise reduction method
US9007232B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9007232-B2 |
| Application number | US-201113819165-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 26, 2011 |
| Priority date | Aug 26, 2010 |
| Publication date | Apr 14, 2015 |
| Grant date | Apr 14, 2015 |
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Abstract
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A method for reducing noise in downhole fluid communications includes processing first and second received signals in combination with a strobe signal from an active pump to obtain pump signatures at first and second spaced measurement locations. The pump signatures are used to compute a transfer function of the fluid channel between the two measurement locations. The transfer function may then be used to estimate the telemetry signal traveling in the uphole direction.
First claim
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I claim: 1. A method for communicating a signal through a fluid in a borehole between a first downhole location and a second uphole location, the method comprising: (a) receiving signals in the fluid at at least first and second spaced uphole positions, the received signals including at least a telemetry signal, a reflected telemetry signal, and a pump noise signal; (b) receiving a strobe signal from an active pump, the pump being in fluid communication with the first and second…
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- What does patent US9007232B2 cover?
- A method for reducing noise in downhole fluid communications includes processing first and second received signals in combination with a strobe signal from an active pump to obtain pump signatures at first and second spaced measurement locations. The pump signatures are used to compute a transfer function of the fluid channel between the two measurement locations. The transfer function may then…
- Who is the assignee on this patent?
- Brooks Andrew G, Schlumberger Technology Corp
- What technology area does this patent fall under?
- Primary CPC classification E21B47/18. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Apr 14 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).