Rare Earth Ceramic Proppants for Friction Reduction
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Solution Overview
Problem
Existing proppant and gravel packs in hydraulic fracturing and gravel packing operations face limitations in fluid flow capacity, leading to reduced hydrocarbon production due to high friction and susceptibility to corrosion, which are not adequately addressed by conventional ceramic particles.
Innovation Solution
Incorporating 0.1 wt. % to 25 wt. % of rare earth-containing compounds such as scandium, yttrium, and cerium into ceramic particles to create a hydrophobic, low-friction surface that enhances fluid flow and mechanical strength, while also providing antioxidant properties and reducing particle diagenesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ceramic particles are used in proppant packs, then the pack provides basic structural support, but fluid flow capacity is limited due to high friction between particles
Solution Approach 1:
The patent applies parameter changes by modifying the surface properties of ceramic particles through coating with hydrophobic materials and incorporating rare earth elements. This changes the friction parameter between particles, reducing it from high friction to low friction surface, thereby increasing fluid flow capacity while maintaining structural support function
Solution Approach 2:
The patent uses composite materials by combining ceramic particles with hydrophobic coatings and rare earth element compounds. This composite structure provides both the structural support of ceramics and the low-friction, high-flow characteristics of the hydrophobic surface, resolving the contradiction between structural integrity and fluid flow capacity
2Productivity
If conventional ceramic particles are used in gravel packs, then the pack filters formation particles, but fluid flow is restricted due to high friction and particle interaction
Solution Approach 1:
The patent changes the surface parameter of ceramic particles by applying hydrophobic coatings and incorporating rare earth elements, which reduces friction and particle interaction. This enables the gravel pack to maintain effective filtration while allowing higher fluid flow through the packed structure
3Strength
If ceramic particles are used without rare earth compounds, then the proppant pack is easier to manufacture, but mechanical strength and corrosion resistance are insufficient
Solution Approach 1:
The patent modifies the chemical composition parameter of ceramic particles by incorporating rare earth compounds at controlled concentrations (0.1-25 wt%). This compositional change enhances mechanical strength and corrosion resistance while maintaining manufacturability through standard ceramic processing techniques
Solution Approach 2:
The patent creates composite ceramic materials by combining traditional ceramic matrices with rare earth element compounds. This composite approach provides enhanced mechanical properties and corrosion resistance while using established ceramic manufacturing processes, thus balancing improved performance with ease of manufacture
4Productivity
If conventional ceramic particles are used, then the proppant pack requires less chemical composition modification, but fluid flow enhancement is limited
Solution Approach 1:
The patent optimizes the chemical composition parameter by incorporating rare earth compounds at specific concentrations (0.1-25 wt%), which enhances fluid flow and hydrocarbon production. This controlled compositional modification achieves productivity enhancement without excessive complexity in the chemical formulation
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 use of rare earth-containing ceramic particles significantly improves fluid flow and mechanical strength, reduces drag, and enhances hydrocarbon production by creating a self-cleaning, hydrophobic surface that maintains performance over the life of the well.
Implementation Method 1
rare earth-containing materials provide a hydrophobic, low friction surface
Implementation Method 2
rare earth-containing materials provide a hydrophobic, low friction surface
Implementation Method 3
the rare earth-containing compound improves the mechanical strength of the proppant pack and gravel pack
Implementation Method 4
The rare earth-containing compound improves the mechanical strength of the proppant pack and gravel pack
Data Source
AI summary
A method of improving the flow of a proppant pack or gravel pack comprises: introducing into a subterranean formation or a well a plurality of ceramic particles, the ceramic particles comprising about 0.1 wt. % to about 25 wt. % of a rare earth-containing compound, based on the total weight of the ceramic particles; and forming a proppant pack or gravel pack comprising the plurality of the ceramic particles; wherein the proppant pack or gravel pack improves fluid flow as compared with a reference proppant pack or gravel pack formed from otherwise identical ceramic particles except for being free of the rare earth-containing compound.