Downhole Microconduit Fluid Analysis System

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Solution Overview

Problem

The complex composition of fluids from boreholes, which can include oil and water insoluble compounds, is sensitive to environmental changes during extraction, leading to unwanted separation or precipitation when brought to the surface, making it difficult to analyze and restore the original composition.

Innovation Solution

A fluid testing device with microconduits is deployed in situ within the borehole, featuring a substrate with microconduits smaller than 1 cm² that allow for in situ analysis using sensors, enabling precise estimation of fluid parameters without the need for surface transport, which minimizes separation and maintains the fluid's original composition.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If fluid is transported to the surface for analysis, then analysis can be performed in a controlled environment, but the fluid composition changes due to separation and precipitation

Engineering Contradiction:
Improvefluid analysis accuracyVSAvoidfluid composition stability
Core Design Contradiction:
Measurement precisionVSStability of the object's composition

Solution Approach 1:

The patent performs fluid analysis before the fluid reaches the surface, where environmental changes could cause composition changes. By conducting measurements in situ downhole, the system captures the fluid's original composition state, preventing separation and precipitation issues that would occur during surface transport

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary measurement system (sensors and testing members) that can operate directly in the downhole environment. This intermediary device enables accurate fluid characterization without requiring the fluid to be transported to surface facilities, thus maintaining composition stability while achieving measurement objectives

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If in situ analysis is performed using microconduits, then fluid composition stability is maintained, but the device complexity increases

Engineering Contradiction:
Improvefluid composition stabilityVSAvoidtesting device complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The testing device is segmented into modular functional components: sampling means, microconduit array with multiple conduits of different dimensions, testing members, and sensors. This segmentation allows each component to perform a specific function independently, simplifying the overall design while maintaining composition stability through the microconduit architecture

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs microconduits with controlled porous structures and specific cross-sectional areas to facilitate fluid flow and interaction with sensors. The microconduit design provides a controlled environment that maintains fluid composition while enabling measurement, reducing the need for complex external containment systems

Inventive Principle:
Principle #31Porous materials

Data Source

PatentUS8508741B2Fluid sampling and analysis downhole using microconduit system
Publication Date: 2013.08.13 BAKER HUGHES CO
  • US8508741B2 patent drawing
  • US8508741B2 patent drawing
  • US8508741B2 patent drawing

AI summary

An apparatus and method for estimating a parameter of interest in a downhole fluid using fluid testing module. The fluid testing module may include: a substrate comprising at least one microconduit, and a sensor. The sensor may be disposed within the at least one microconduit or external. The apparatus may include a fluid transporter for moving fluid within the microconduit. The method includes estimating a parameter of interest using the fluid testing module.