Transducer Mounting for Acoustic Telemetry in Drill Pipes
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Solution Overview
Problem
Current methods for communicating information from downhole locations in drilling operations, such as fossil fuel exploration, face challenges in effectively transmitting data through drill strings using acoustic telemetry, as existing solutions do not provide reliable and efficient means for mounting transducers to facilitate acoustic communication along drilling pipes.
Innovation Solution
The development of an apparatus and method for mounting transducers on drilling pipes, which includes a sub-pipe with connectors and a transducer-holding assembly, allowing for intimate contact and acoustic communication, utilizing a tension collar for axial adjustment and feed-throughs for electrical connections, enabling efficient transmission and reception of acoustic signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transducers are mounted on drilling pipes using existing methods, then acoustic communication can be established, but the mounting reliability and acoustic signal transmission quality are insufficient
Solution Approach 1:
The transducer is inserted into a cavity within the drill pipe and secured internally, creating a nested configuration where the transducer housing fits within the pipe's internal volume. This nesting approach provides secure mounting while maintaining the pipe's external dimensions and structural integrity, resolving the contradiction between mounting reliability and device complexity.
Solution Approach 2:
A coupling medium (such as drilling fluid or specialized acoustic coupling material) is introduced between the transducer surface and the pipe's internal surface to ensure acoustic coupling. This intermediary substance fills gaps and ensures reliable acoustic signal transmission, improving mounting reliability without requiring complex mechanical attachment structures.
2Reliability
If transducers are securely mounted to ensure acoustic communication, then signal transmission quality improves, but the installation and maintenance difficulty increases
Solution Approach 1:
The mounting system is divided into separable components: the transducer assembly can be independently inserted into and removed from the drill pipe's cavity. This segmentation allows the transducer to be mounted and maintained without affecting the pipe structure, improving ease of operation while maintaining acoustic signal transmission quality through proper coupling mechanisms.
Solution Approach 2:
The drill pipe is pre-designed with an internal cavity and coupling surfaces prepared in advance during manufacturing. This preliminary preparation enables straightforward transducer installation by simply inserting and coupling the transducer into the pre-configured space, reducing installation and maintenance difficulty while ensuring reliable acoustic coupling.
3Productivity
If existing mounting structures are used, then the drill string can be assembled, but acoustic telemetry efficiency is reduced
Solution Approach 1:
The drill pipe design incorporates a multi-functional cavity structure that serves both as a mounting space for the transducer and as part of the acoustic transmission path. This universal structure eliminates the need for separate mounting brackets or external attachments, improving acoustic telemetry efficiency while avoiding additional structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables reliable acoustic communication along drilling pipes, allowing for improved monitoring and control of drilling operations by facilitating the transmission of data from downhole sensors to surface locations, enhancing the efficiency and accuracy of drilling processes.
Implementation Method 1
communicating via acoustic (or pressure) waves that travel through the drill string (e.g. through the pipe body)
Implementation Method 2
mounting one or more transducers to a drilling pipe for acoustic communication along the drilling pipe
Data Source
AI summary
An apparatus for mounting one or more transducers to a drill pipe. The apparatus comprises a sub-pipe having a bore and a transducer-holding assembly, wherein the transducer-holding assembly is insertable into the bore of the sub-pipe from an axial end of the sub-pipe. The apparatus further comprising a tension collar connected to the bore-defining surface of the sub-pipe and bearing upon the transducer-holder.