Turbidity Measurement for Wellbore Fluid Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for evaluating solid particle separation in wellbore fluids are limited in measuring dynamic separation processes, particularly in bridging lost circulation zones and proppant build-up within fractures, which affects the effectiveness of hydraulic fracturing operations and leads to additional operational expenditures and potential formation damage.
Innovation Solution
The use of turbidimetry to measure the separation of solids from wellbore fluids as they flow across permeable obstructions like porous media and fractured media, employing turbidity measurement systems with light sources and detectors to analyze the dynamics of suspended solids, filter cakes, and particle build-up, allowing for real-time monitoring of filtration efficiency and permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pressure-flow characteristics monitoring is used to measure solid removal, then the measurement can be obtained through standard equipment, but it cannot measure the dynamic separation process and requires calibration and calculation
Solution Approach 1:
The patent replaces mechanical pressure-flow monitoring with optical measurement systems (nephelometry, turbidimetry, light scattering) to directly measure particle concentration and separation dynamics. This substitution eliminates the need for complex calibration and calculation while enabling real-time dynamic measurement of the separation process.
Solution Approach 2:
The patent introduces light as an intermediary medium to measure particle separation. By passing light through the wellbore fluid and measuring light scattering or absorption properties, the system indirectly measures particle concentration and separation efficiency without requiring direct mechanical intervention or complex calibration procedures.
2Loss of information
If API Recommended Practice 13B-1 Annex J and/or 13B-2 Annex L are used to test bridging effectiveness, then standardized testing can be performed, but analysis of particle build-up dynamics within and above lost circulation zones is not allowed
Solution Approach 1:
The patent implements continuous optical monitoring throughout the testing process, allowing uninterrupted measurement of particle build-up dynamics. This continuous measurement capability provides real-time data on particle concentration changes within and above lost circulation zones, enabling comprehensive analysis that extends beyond the limited scope of standardized API testing.
Solution Approach 2:
The patent uses light scattering and absorption as intermediary measurement mechanisms to capture particle build-up dynamics. This optical approach provides detailed information about particle concentration, size distribution, and spatial distribution that is not obtainable through traditional pressure-flow monitoring in standardized testing protocols.
3Loss of information
If proppant build-up effectiveness is tested using current methods, then the effectiveness can be evaluated, but dynamics of particle build-up within the fracture cannot be analyzed
Solution Approach 1:
The patent transitions from one-dimensional pressure-flow measurement to multi-dimensional optical measurement, capturing particle build-up dynamics in multiple spatial dimensions within the fracture. This dimensional expansion enables comprehensive analysis of particle distribution, concentration gradients, and build-up patterns that cannot be obtained through traditional single-point pressure monitoring.
Solution Approach 2:
The patent replaces mechanical pressure monitoring with optical measurement systems to directly observe and measure particle build-up dynamics within the fracture. This substitution enables precise measurement of particle concentration and spatial distribution, providing detailed insights into proppant placement and fracture filling that are inaccessible through conventional mechanical methods.
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 effective analysis of solid particle separation dynamics, improving the reuse of drilling fluids, reducing operational costs, and enhancing the effectiveness of hydraulic fracturing by providing real-time data on particle build-up and permeability, thus optimizing wellbore operations and preventing formation damage.
Implementation Method 1
using turbidimetry to measure the separation of solids from wellbore fluids
Implementation Method 2
pass a known wavelength of light through a wellbore fluid and then may measure the intensity of the transmitted light
Implementation Method 3
measure the intensity of the transmitted light as well as the light backscattered by the wellbore fluid
Data Source
AI summary
Turbidity measurement systems and methods of using the same are described. A turbidity measurement system comprise a vessel configured to hold a wellbore fluid, wherein a permeable obstruction to flow is positioned in the vessel; a light source positioned to direct light at the vessel; a light detector positioned to measure light intensity of light emitted by the light source and passing through the vessel; and a backscatter detector positioned to measure the light intensity of reflected light emitted from the light source.