Wellbore Casing Identification Codes for Downhole Equipment Location
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Solution Overview
Problem
Current methods for determining the location of downhole equipment in oil and gas wells are complex, imprecise, and expensive, necessitating the development of more intelligent and adaptable techniques for drilling and completing wells.
Innovation Solution
The use of a casing with strategically placed sections of unique material compositions that form readable identification codes, detectable by a reader device, allowing for precise location and access of equipment within the wellbore.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional methods are used to determine downhole equipment location, then the process can be performed with existing technology, but the method becomes complex, imprecise, and expensive
Solution Approach 1:
The patent applies preliminary action by pre-installing identification markers with unique material compositions on the casing during the well completion process. These markers are positioned at specific depths before any location determination is needed, enabling immediate and precise identification of equipment locations without requiring complex measurement procedures later.
Solution Approach 2:
The patent replaces complex mechanical location determination methods with a material-based identification system. Instead of using sophisticated sensors, electromagnetic field measurements, or acoustic positioning systems, the invention uses simple magnetic properties of differently composed materials to encode location information that can be read by a basic magnetic sensor.
2Productivity
If traditional location determination methods are used, then existing equipment can be utilized, but the process becomes expensive and time-consuming
Solution Approach 1:
The identification markers are installed during the well completion process itself, performing the location coding task in advance. This eliminates the need for time-consuming location surveys and equipment inventory procedures that would otherwise be required after completion, thereby improving productivity and reducing time loss.
Solution Approach 2:
The casing structure serves a dual function: it provides structural support for the well and simultaneously carries the location identification markers. This self-service approach integrates the identification function into the existing casing structure, eliminating the need for separate, time-consuming location determination operations.
3Measurement precision
If simple markers are placed on the casing, then the system remains simple and cost-effective, but the markers may not provide sufficient precision for locating specific equipment addresses
Solution Approach 1:
The patent applies local quality by varying the material composition of markers at different locations along the casing. Each marker segment has a specific material composition (different magnetic properties) corresponding to its location, creating a unique spatial code pattern. This allows precise location identification through simple magnetic property detection without requiring complex manufacturing processes.
Solution Approach 2:
The invention changes the material composition parameter of the markers to encode location information. By varying the magnetic properties (a fundamental material parameter) of markers at different positions, the system creates a readable code pattern that provides precise location identification while maintaining simple manufacturing through standard material selection and placement.
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
Enables accurate and efficient installation, inventorying, and actuation of downhole equipment by providing a permanent and robust method for determining precise locations along the casing, reducing manipulation time and costs while improving the precision of well completion processes.
Implementation Method 1
The different material compositions, exhibit contrasting resistivity values along the length of the casing. By inserting these different sections (and/or markers) into the casing (in some cases sections of the rings are composed of different materials), a basis is formed for determining discrete locations that are specific addresses based upon reading the ID code.
Data Source
AI summary
A method, system, and associated apparatus are described for installing, inventorying, actuating, and/or accessing down-hole equipment in a wellbore. This comprises tagging a casing by inserting permanent components of material compositions within sections along the length of a casing. Inserted components and/or portions of an original section function as unique readable active and/or passive markers. The piping system is at least one pipe having a plurality of markers placed in radial sections strategically arranged with independently identical or different material compositions or embedded in a length of the wellbore casing. The sections function as markers forming a readable pattern readable by the reader(s). The reader is one of or a combination of any of the group consisting of a plug, a probe, a sensor, and/or a computer for reading markers. The reader travels in either a forward or backward direction.