Fluid Sampling Assembly for Continuous Oil and Gas Production
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Solution Overview
Problem
Current metering technologies for oil and gas production are not stable over time, require shutdown for calibration, and cannot accurately measure all components of the process fluid, leading to uncertainties and increased costs.
Innovation Solution
A sampling arrangement using a ball valve with a rotating inner body and a sampling organ that allows for representative fluid sampling without halting the flow, featuring a receiving chamber with a closable fluid opening and a sampling organ with constricted sections for capturing fluid samples from different vertical levels, enabling repetitive sampling without disrupting the flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional bleed point sampling is used, then sample extraction is simple, but the sample representativity is poor due to flow regime variations and settling
Solution Approach 1:
The sampling system uses a dynamically adjustable sampling organ that can move vertically within the pipe cross-section to adapt to different flow conditions and capture representative samples regardless of flow regime variations
Solution Approach 2:
The sampling organ is positioned to extend in the vertical dimension across the pipe cross-section, allowing it to sample from multiple vertical levels simultaneously and capture the full distribution of liquid, gas, and particles
2Measurement precision
If permanent octopus branching installation is used, then simultaneous sampling from various positions is achieved, but pollution and blocking still occur and representation is unequal
Solution Approach 1:
The sampling organ is designed to be removable and replaceable, allowing it to be taken out for cleaning or replacement when pollution or blocking occurs, preventing permanent system degradation
Solution Approach 2:
The sampling organ can dynamically adjust its position and orientation to optimize sampling from different locations in the pipe cross-section, ensuring equal representation from all areas
3Measurement precision
If calibration with known liquid is performed, then meter accuracy can be verified, but production shutdown is required and calibration quality is uncertain
Solution Approach 1:
The sampling system enables continuous production while simultaneously extracting representative samples for calibration purposes, eliminating the need to shut down production for calibration activities
Solution Approach 2:
The sampling organ acts as an intermediary that extracts process fluid samples without disrupting the main production flow, allowing calibration to proceed independently while production continues
4Measurement precision
If sampling organ extends vertically across pipe cross section, then representative sampling from different vertical levels is achieved, but device complexity increases
Solution Approach 1:
The sampling organ is designed as a multi-functional component that simultaneously samples from multiple vertical levels, adjusts its position, and can be removed for cleaning, reducing the need for multiple separate sampling devices
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
This solution significantly reduces errors and provides a high degree of representativity for the process fluid sample, allowing for accurate characterization and measurement of fluid components without interrupting production, and enables repetitive sampling for improved data collection.
Implementation Method 1
the differential pressure is used to bleed off a sample of the process fluid
Data Source
AI summary
Sampling arrangement adapted for extracting a fluid sample from a fluid flowing in a flow path. The arrangement comprises a sampling valve, such as a ball valve, comprising an outer body and an inner body rotationally supported within it. The inner body is rotationally supported about a rotation axis and comprises a cavity with a first opening adapted to be rotated into and out of fluid connection with the flowing fluid, and a second opening which faces in a direction parallel to the rotation axis of the inner rotating body.