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Multiphase flow metering system for horizontal well compartments

a multi-phase flow metering and well compartment technology, applied in the field of oil and gas exploration and production, can solve the problems of mixing fluids, emulsions, erosion, and additional pressure drops, and the measurement of the total mass fluid flow does not necessarily provide useful information

Active Publication Date: 2021-02-25
SAUDI ARABIAN OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables accurate and efficient measurement of individual phase flows without mixing, reducing complexity and maintaining phase separation throughout the production period, thereby improving measurement accuracy and reducing operational challenges.

Problems solved by technology

Measurement of the total mass fluid flow does not necessarily provide useful information concerning the flow of each of the distinct phase components, which is often desired.
However, mixing the fluids can create further complications such as emulsions, erosion, and additional pressure drops.
Other techniques that measure flows by separating or stratifying the phases employ cumbersome separation devices and are not optimized for sensing and the phase levels in a horizontal well.

Method used

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  • Multiphase flow metering system for horizontal well compartments
  • Multiphase flow metering system for horizontal well compartments
  • Multiphase flow metering system for horizontal well compartments

Examples

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Embodiment Construction

[0025]Systems and methods for measuring two-phase flow (i.e., flow including two components such as water and oil) in downhole well compartments are disclosed herein. The two-phase flow arrives in an unmixed state or is separated into its components and stratified (into top and bottom portions) inside a horizontal well compartment. In either case, the phases are maintained in an unmixed state within the horizontal well compartment. The well compartment apparatus includes tubing having flow ports arranged to permit flow from the annulus surrounding the tubing. One set of ports is permeated by one of the two phases, while another set of ports is permeated by the other phase, allowing the flow of each phase to be measured separately. The level of the interface between the stratified phases is maintained using level sensors and adjustable valves that control the flow from the annulus into to the production tubing.

[0026]The flows are stratified to facilitate flow measurement because dete...

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Abstract

A method of measuring two or more fluid phases of in a downhole well bore that comprises measuring a flow of each of the two or more phases at respective offtake points at which the two or more phases are unmixed within the well bore. In certain implementations, the well bore is inclined at 20 degrees or less to a horizontal axis. Each of the two or more phases can flow at a rate to achieve low Reynolds numbers in a laminar flow regime.

Description

FIELD OF THE DISCLOSURE[0001]The present disclosure relates to oil and gas exploration and production, and, more particularly, relates to a multiphase flow metering system for a horizontal well compartment and associated method of multiphase flow metering.BACKGROUND OF THE DISCLOSURE[0002]In oil and gas production, it is often useful to measure the amount of fluid flowing in various parts of the infrastructure. For example, flow measurement can be used to monitor the performance of multizonal horizontal wells and the real-time measurement of water flow, which allows production engineers to plan immediate remedial action. Multiphase flow is fluid flow that includes two or more components, referred to as phases. In the oil and gas field, the multiphase flow typically consists of oil and water, oil and gas, or oil, gas and water. Measurement of the total mass fluid flow does not necessarily provide useful information concerning the flow of each of the distinct phase components, which i...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01F5/00G01F23/26E21B47/10E21B47/06
CPCG01F5/005E21B47/06E21B47/10G01F23/263E21B43/12E21B47/047
Inventor BUKHAMSEEN, AHMED Y.BOULDIN, BRETT W.TURNER, ROBERT JOHNALSAUD, MOATAZ ABU
Owner SAUDI ARABIAN OIL CO
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