Mobile Coating Unit for On-Site Proppant Formulation
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Solution Overview
Problem
Current methods for hydraulic fracturing in oil and gas wells face inefficiencies due to variability in well conditions, requiring extensive planning and resource-intensive processes for mixing and transporting fracturing fluids, which leads to logistical challenges, waste, and increased costs.
Innovation Solution
A mobile coating unit that produces custom coated proppants on-site, using real-time data to adjust formulations and reduce the need for pre-determined coatings, thereby optimizing the use of materials and minimizing waste by integrating with existing fracturing equipment and reducing logistical and transportation costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If proppant is coated off-site before transport to well-site, then coating can be applied in controlled environment, but coating cannot be adjusted to match real-time down-hole conditions and requires advance determination of coating type
Solution Approach 1:
The coating unit is designed to be mobile and dynamically adjustable at the well-site, allowing real-time changes to coating formulations based on down-hole conditions. The system transitions from static off-site coating to dynamic on-site coating that can adapt to varying well conditions during the fracturing process.
Solution Approach 2:
The mobile coating unit acts as an intermediary between proppant source and fracturing fluid, applying coatings at the well-site based on real-time conditions. This intermediary system resolves the conflict between controlled coating application and real-time adaptability by providing a mobile platform that can be positioned and configured as needed.
2Adaptability or versatility
If multiple chemicals and materials are transported to well-site for fracturing fluid preparation, then various well conditions can be addressed, but logistical complexity and transportation costs increase
Solution Approach 1:
The mobile coating unit is designed as a multi-functional system that can apply various coating formulations to address different well conditions. Rather than transporting multiple specialized equipment sets, a single versatile unit handles multiple functions: proppant coating, formulation adjustment, and real-time monitoring, thereby reducing logistical complexity while maintaining adaptability.
Solution Approach 2:
The system changes parameters of the coating formulation in real-time based on down-hole conditions rather than transporting multiple fixed formulations. The mobile unit adjusts chemical concentrations, coating types, and application rates dynamically, reducing the need for extensive material transport while maintaining versatility.
3Productivity
If proppant is coated with friction reducer before fracturing, then proppant transport efficiency improves, but chemical usage increases and environmental impact worsens
Solution Approach 1:
The mobile coating unit incorporates real-time monitoring of down-hole conditions and uses feedback to adjust coating application. Friction reducer is applied only when and where needed based on actual well conditions, rather than universal pre-coating. This feedback mechanism optimizes proppant transport efficiency while minimizing unnecessary chemical usage and environmental impact.
Solution Approach 2:
Rather than coating all proppant with friction reducer, the system applies partial coating only to the extent necessary for efficient transport based on real-time conditions. The mobile unit adjusts coating quantity and timing, avoiding excessive chemical application while maintaining sufficient transport efficiency.
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 mobile coating unit significantly reduces chemical usage, minimizes waste, and enhances operational efficiency by producing coated proppants tailored to real-time down-hole conditions, thereby improving well completion processes and reducing environmental impact.
Implementation Method 1
a liquid additive dispenser sprayed a liquid coating material onto the proppant
Implementation Method 2
a volumetric powder dispenser distributed powdered coating materials onto the proppant
Implementation Method 3
a coating mixer tumbled and mixed the proppant and coating materials for a predetermined time
Data Source
AI summary
A method for improving the performance of hydraulic fracturing processes in oil production fields wherein modifiable coated proppants used in the fracturing fluid are produced on a well-site. Various types of coated proppants may be produced based on real-time, down-hole information obtained and utilized at the well-site.