Downhole Formation Tester Fluid Customization
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Solution Overview
Problem
Conventional micro-fracturing techniques for downhole fluid sampling in subterranean formations lack real-time optimization capabilities, relying on pre-formulated fracturing fluids that do not adapt to changing downhole conditions, which can lead to suboptimal fracturing and sampling outcomes.
Innovation Solution
A downhole formation tester with modular sections for fluid customization, using sensors to monitor downhole conditions and adjust the composition of fracturing fluids in real-time by mixing fracturing fluid with additives such as proppants, breaker fluids, and polymers, optimizing fluid properties for specific stages of the micro-fracturing operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pre-formulated fracturing fluids are used, then the operation is simple, but the fluid cannot adapt to changing downhole conditions
Solution Approach 1:
The fracturing fluid system is divided into separate functional modules: a base fluid reservoir, multiple additive reservoirs (each containing different additives like gel agents, friction reducers, or breakers), and a mixing chamber. This segmentation allows independent storage and controlled combination of fluid components, enabling adaptability without requiring a completely complex integrated system.
Solution Approach 2:
The fluid composition is made dynamic through real-time adjustment capabilities. The system can modify fluid properties during the micro-fracturing operation by injecting additives in response to downhole conditions, transforming a static pre-formulated fluid into a dynamically adaptable fluid system that evolves with operational needs.
2Productivity
If fluid additives are mixed downhole, then real-time optimization is achieved, but the device complexity increases
Solution Approach 1:
The system merges multiple reservoirs (base fluid and various additives) with a mixing chamber and injection system into an integrated modular unit. This consolidation allows downhole mixing and real-time optimization of fracturing fluid properties without requiring separate surface equipment, thereby improving sampling efficiency while containing complexity within a single deployable tool.
Solution Approach 2:
The downhole fluid customization system is self-sufficient, carrying all necessary fluid components and mixing capabilities within the formation tester itself. The system can independently adjust fluid properties downhole without requiring continuous surface intervention or complex external support equipment, enabling real-time optimization while maintaining operational simplicity.
3Loss of time
If conventional formation testing techniques are used, then the equipment is simple, but the time required for fluid sampling is extended
Solution Approach 1:
The system performs preliminary actions by pre-positioning multiple additive reservoirs and the mixing chamber within the formation tester before deployment. This allows immediate fluid customization upon reaching downhole conditions, eliminating the time delay associated with preparing specialized fluids at the surface or during the sampling process itself.
Solution Approach 2:
The fluid customization system enables continuous adjustment of fracturing fluid properties throughout the micro-fracturing operation. By maintaining the capability to mix and inject additives in real-time, the system ensures uninterrupted optimization of fluid performance, preventing time losses that would occur with batch processing or post-operation analysis.
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 real-time optimization of micro-fracturing operations by customizing fracturing fluids based on current downhole conditions, improving the efficiency and effectiveness of fluid injection and sampling, particularly in unconventional formations, and reducing the time required for obtaining representative formation fluid samples.
Implementation Method 1
adjust the composition of fracturing fluids in real-time by mixing fracturing fluid with additives such as proppants, breaker fluids, and polymers
Implementation Method 2
using sensors to monitor downhole conditions and adjust the composition of fracturing fluids in real-time
Implementation Method 3
injection of the customized fracturing fluid from the downhole formation tester into an area of the subterranean formation
Data Source
AI summary
System and methods for customizing fracturing fluids downhole for real-time optimization of micro-fracturing operations are provided. Downhole operating conditions are monitored during a micro-fracturing operation along a portion of a wellbore within a subterranean formation, based on downhole measurements collected by sensors of a downhole formation tester. Injection parameters for a fracturing fluid to be injected from a bulk storage chamber of the downhole formation tester into the subterranean formation are determined based on the downhole operating conditions. Signals for customizing the fracturing fluid using one or more fluid additives stored within corresponding fluid storage chambers of the downhole formation tester are transmitted to a controller of the downhole formation tester, based on the injection parameters. Injection of the customized fracturing fluid from the downhole formation tester into an area of the subterranean formation surrounding the portion of the wellbore is controlled during the micro-fracturing operation.