Downhole Fluid Analysis Tool Phase Separator

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Solution Overview

Problem

Current downhole fluid analysis techniques are limited to station measurements, struggling to accurately analyze multiphase fluids in real-time during production logging due to sensor limitations and phase detection issues, leading to uncertainties in hydrocarbon composition and production optimization.

Innovation Solution

A downhole fluid analysis tool employing a phase separator to separate immiscible phases and a module with sensors for continuous analysis, using gravity separation and rapid analysis capabilities to ensure accurate measurements of fluid properties, allowing for real-time characterization of downhole fluids.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If station measurements are used for downhole fluid analysis, then measurement simplicity is maintained, but measurement precision and real-time capability are insufficient

Engineering Contradiction:
Improvefluid composition measurement precisionVSAvoidanalysis tool complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The analysis tool is segmented into distinct functional modules: a phase separator module that divides multiphase fluids into individual phases, and a sensor module that analyzes each phase separately. This segmentation allows precise measurement of each phase composition while keeping the overall device manageable through modular architecture.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A phase separator acts as an intermediary component between the multiphase fluid source and the sensors. It pre-processes the fluid by separating phases before analysis, enabling sensors to measure each phase accurately without interference from other phases, thus improving measurement precision.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If multiphase fluids are analyzed directly without separation, then device complexity is reduced, but measurement precision deteriorates due to phase detection issues

Engineering Contradiction:
Improvephase composition measurement precisionVSAvoidphase separation system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The phase separation system extracts individual phases from the multiphase fluid stream before analysis. By taking out each phase separately through the phase separator, the system enables precise measurement of each phase composition without the interference and detection issues that arise when analyzing multiphase fluids directly.

Inventive Principle:
Principle #2Taking out (Extraction)

3Productivity

If continuous analysis is implemented, then productivity is improved, but device complexity and sensor requirements increase

Engineering Contradiction:
Improvefluid analysis throughputVSAvoidcontinuous monitoring system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system implements continuous analysis by maintaining a continuous flow of separated phases through the sensor module. The phase separator operates continuously to divide incoming multiphase fluid, and sensors continuously measure phase compositions, enabling real-time monitoring and significantly improving analysis throughput compared to discrete station measurements.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

By segmenting the continuous flow into separate phase streams through the phase separator, the system can continuously analyze each phase independently using dedicated sensors. This segmentation approach enables high-productivity continuous monitoring while managing device complexity through modular, phase-specific analysis pathways.

Inventive Principle:
Principle #1Segmentation

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 continuous, accurate measurement of fluid properties during production logging, improving hydrocarbon composition understanding and optimizing production by distinguishing between zones and phases, thus enhancing production efficiency and avoiding phase behavior problems.

Implementation Method 1

A downhole fluid analysis tool employing a phase separator to separate immiscible phases and a module with sensors for continuous analysis, using gravity separation and rapid analysis capabilities

Methodology Applied
Scientific EffectGravity separation: Gravitation

Data Source

PatentUS7644611B2Downhole fluid analysis for production logging
Publication Date: 2010.01.12 SCHLUMBERGER TECH CORP
  • US7644611B2 patent drawing
  • US7644611B2 patent drawing
  • US7644611B2 patent drawing

AI summary

A downhole fluid analysis tool capable of fluid analysis during production logging that includes a phase separator and a plurality of sensors to perform analysis on the fluids collected at a subsurface location in a borehole.