Swellable Glass Particles for Subterranean Fluid Flow Control
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Solution Overview
Problem
Conventional methods for addressing lost circulation in subterranean formations during wellbore operations are inadequate, leading to undesirable fluid loss, increased costs, and operational disruptions due to the inability to effectively seal fractures and permeable zones.
Innovation Solution
The use of swellable glass particles, which expand when contacted with organic fluids, combined with a resin composition to form a hardened barrier that blocks fluid flow paths, thereby reducing fluid loss and preventing circulation issues in subterranean formations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lost circulation materials (fibrous, lamellated, or granular materials) are placed into the formation, then fluid flow control is attempted, but effective sealing of fractures and permeable zones is not achieved
Solution Approach 1:
The glass particles undergo a parameter change in volume when exposed to organic fluids. They absorb the organic fluid and swell, increasing their volume significantly. This volume expansion allows the particles to effectively seal fractures and permeable zones that conventional materials cannot penetrate or seal effectively.
Solution Approach 2:
The invention uses a composite system combining glass particles with organic fluids. The glass particles provide the structural framework for sealing, while the organic fluid acts as a swelling agent. This composite approach creates a dynamic sealing mechanism that adapts to the formation conditions, achieving effective fluid flow control.
2Reliability
If a settable composition is placed into the wellbore to seal the lost circulation zone, then sealing is attempted, but desirable level of control is not provided in all circumstances
Solution Approach 1:
The sealing mechanism is dynamic rather than static. The glass particles continue to swell and adjust their volume based on the organic fluid contact, allowing the seal to adapt to varying formation conditions. This dynamic swelling action provides versatility across different circumstantial conditions compared to conventional settable compositions.
Solution Approach 2:
The glass particles automatically swell when exposed to organic fluids without requiring external activation or complex formulation. The system is self-regulating, with the particles naturally absorbing the organic fluid and expanding to provide sealing, eliminating the need for precise control of settable composition parameters.
3Ease of operation
If drilling fluid is circulated through the wellbore, then lubrication and cuttings transport are achieved, but fluid loss to the formation occurs
Solution Approach 1:
The glass particles act as an intermediary substance introduced into the lost circulation zone. They intercept and seal the fluid loss pathways (fractures and permeable zones) before the drilling fluid can escape into the formation. This intermediary sealing action allows drilling operations to continue without significant fluid loss.
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
The swellable glass particles and resin composition effectively seal fractures and permeable zones, reducing fluid flow and allowing for the resumption of wellbore operations by forming a substantially impermeable barrier, thereby minimizing fluid loss and operational interruptions.
Implementation Method 1
The swellable glass particles may be used in combination with resins to reduce or potentially even prevent flow of fluids in subterranean formations... the swellable glass particles expand when contacted with organic fluids
Implementation Method 2
combined with a resin composition to form a hardened barrier that blocks fluid flow paths
Data Source
AI summary
Methods, compositions, and systems that use swellable glass particles to reduce fluid flow in subterranean formations are included. An example method may comprise introducing swellable glass particles into a zone of a subterranean formation; contacting the swellable glass particles with a resin composition in the zone; and allowing the resin composition to harden in the zone whereby flow through the zone is reduced.