Chemically Tagged Drilling Fluid Additives for Precise Quantification
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Solution Overview
Problem
Current drilling fluids face challenges in accurately quantifying individual additives due to contamination and interference with formation fluids, making it difficult to maintain optimal drilling conditions and interpret test results.
Innovation Solution
Chemically tagging drilling fluid additives with fluorescent molecules or isotopes allows for precise quantification through characteristic signatures, enabling improved monitoring and separation from formation fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If drilling fluid additives are used to perform drilling functions, then drilling performance is improved, but quantification and identification of individual additives becomes difficult
Solution Approach 1:
The patent applies fluorescent tagging to drilling fluid additives, causing them to emit characteristic light signals when excited. This allows individual additives to be identified and quantified through their unique fluorescent signatures, resolving the measurement difficulty caused by additive complexity and degradation.
2Loss of information
If monitoring techniques are used to track drilling fluid properties, then fluid condition awareness is improved, but individual additive analysis remains inaccurate due to contamination assumptions
Solution Approach 1:
Fluorescent tags provide unique spectral signatures for each additive type, enabling individual identification even in contaminated or degraded drilling fluids. This eliminates the need to assume no contamination, as each additive's fluorescent signal can be independently measured and quantified.
3Productivity
If drilling fluid additives are introduced into formation, then drilling operations are facilitated, but interference with formation fluid testing occurs
Solution Approach 1:
The fluorescent tags on drilling fluid additives emit characteristic light signals that are distinct from formation fluid signals. This allows testing equipment to distinguish and separate additive signals from formation fluid signals, eliminating interference in formation fluid testing while maintaining drilling operation benefits.
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 method simplifies the quantification of drilling fluid additives, reduces contamination interference, and facilitates more accurate analysis of formation fluids, leading to better maintenance and optimization of drilling operations.
Implementation Method 1
Chemically tagging drilling fluid additives with fluorescent molecules or isotopes allows for precise quantification through characteristic signatures
Implementation Method 2
Chemically tagging drilling fluid additives with fluorescent molecules or isotopes allows for precise quantification through characteristic signatures
Data Source
AI summary
A method, system, and apparatus for using and testing chemically tagged drilling fluid additives. In one embodiment, the method comprises: circulating a drilling fluid in a wellbore, wherein the drilling fluid comprises a chemically tagged drilling fluid additive; and extending the wellbore into one or more subterranean formations while circulating the drilling fluid. A system comprising: a drilling fluid comprising a chemically tagged drilling fluid additive; a drill string comprises a drill bit and a downhole tool; a data processing system operable to receive measurements from the downhole tool to produce a visual representation of the chemically tagged drilling fluid additive in a subterranean formation or a filter cake. An apparatus comprising: a vessel for holding a quantity of a drilling fluid a filter media; a mud sensor; a cake sensor; an outlet sensor; a data processing system coupled to the mud sensor, the cake sensor, and the outlet sensor.