Distributed Acoustic Sensing for Cement Barrier Quality Assessment
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Solution Overview
Problem
The existing cementing process faces challenges in determining cement barrier quality due to the high cost and time required for cement logging, which often leads to the lack of actual measurement of zonal isolation quality, especially when it involves third-party services.
Innovation Solution
The implementation of a distributed acoustic sensing fiber optic line system that receives data from sensors positioned proximate to the cement barrier, allowing for the determination of zonal isolation and compilation of cement bond logs without the need for third-party operations or special equipment, using a system that includes processors and computer-readable storage mediums to analyze data from the fiber optic line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cement bond logging is conducted using traditional third-party services, then cement barrier quality can be determined, but the cost and time requirements increase significantly
Solution Approach 1:
The system enables the drilling/cementing operation to perform its own cement quality assessment using integrated sensors and processors, eliminating the need for separate third-party logging services. The distributed acoustic sensing system continuously monitors cement placement and barrier quality as part of the primary operation, allowing self-determination of cement bond quality without external intervention.
Solution Approach 2:
The patent combines the cement placement operation with quality assessment by integrating distributed acoustic sensing fibers into the cementing process itself. The same infrastructure used for cement delivery and placement is simultaneously used for monitoring, merging two previously separate operations (cementing and logging) into one unified process.
2Measurement precision
If cement bond logging is conducted using traditional third-party services, then cement barrier quality can be determined, but operational costs increase
Solution Approach 1:
The system enables the drilling/cementing operation to perform its own cement quality assessment using integrated sensors and processors, eliminating the need for separate third-party logging services. The distributed acoustic sensing system continuously monitors cement placement and barrier quality as part of the primary operation, allowing self-determination of cement bond quality without external intervention.
Solution Approach 2:
The distributed acoustic sensing system serves multiple functions: it monitors cement placement in real-time, assesses barrier quality, detects anomalies, and provides continuous data for decision-making. This multi-functional system replaces multiple separate operations (cementing equipment plus separate logging equipment and services) with a single integrated platform.
3Measurement precision
If traditional cement logging methods are used, then cement barrier quality can be assessed, but the process requires special operations and coordination
Solution Approach 1:
The patent combines the cement placement operation with quality assessment by integrating distributed acoustic sensing fibers into the cementing process itself. The same infrastructure used for cement delivery and placement is simultaneously used for monitoring, merging two previously separate operations (cementing and logging) into one unified process.
Solution Approach 2:
The system enables the drilling/cementing operation to perform its own cement quality assessment using integrated sensors and processors, eliminating the need for separate third-party logging services. The distributed acoustic sensing system continuously monitors cement placement and barrier quality as part of the primary operation, allowing self-determination of cement bond quality without external intervention.
4Loss of energy
If no cement logging is conducted, then operational costs and time are reduced, but the quality of zonal isolations remains unmeasured
Solution Approach 1:
The distributed acoustic sensing system operates continuously during the entire cement placement process, providing uninterrupted monitoring of cement flow, placement position, and barrier formation. This continuous data stream ensures that quality information is captured throughout the operation without gaps, enabling real-time assessment without requiring separate post-operation logging trips.
Solution Approach 2:
The system performs quality assessment during the cement placement process itself, before the operation is completed. By monitoring in real-time, the system can detect issues as they occur and provide immediate feedback, allowing for corrective actions to be taken during the operation rather than discovering problems after the fact during a separate logging operation.
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 cost-effective and efficient determination of cement barrier quality, providing continuous monitoring of wellbore health and zonal isolation, reducing operational costs and time, while offering real-time data on cement hydration and barrier quality.
Implementation Method 1
a distributed acoustic sensing fiber optic line positioned proximate to a cement barrier of a wellbore
Data Source
AI summary
Aspects of the subject technology relate to systems and methods for determining cement barrier quality of a cementing process. Systems and methods are provided for receiving data from a distributed acoustic sensing fiber optic line positioned proximate to cement barrier of a wellbore, determining at least one zonal isolation in the cement barrier based on the data received from the distributed acoustic sensing fiber optic line, and compiling a cement bond log based on the determining of the at least one zonal isolation in the cement barrier.