Description

Level measurement in degassers

Requirements

  • Continuous measurement to adjust level in the degasser

Description

Level and interface measurement of oil separators

Requirements

  • Continuous measurement to adjust level in the separator
  • Varying levels of oil and water

Description

Flow measurement of water at test separator outlet

Requirements

  • Determine the performance of the well

Description

Flow measurement of produced and separated water

Requirements

  • Control the process
  • Determine the total amount of produced water

Description

Flow measurement of displacement fluid

Requirements

  • High pressures
  • Abrasive medium

Description

Gas flow measurement after separation

Requirements

  • Determine the performance of the well
  • Water could be in the gas

Description

Oil flow measurement after separation

Requirements

  • Determine the performance of the well
  • Occasional voids and gas bubbles

Description

Supervisory and validation software

Requirements

  • Visualisation and monitoring of critical processes
  • Control of reporting, trends and alarm handling
  • Statistical evaluation of measurement data

Description

Metering control cabinets

Requirements

  • Integration of flow computers, PLCs, supervisory computers and printers
  • Installation of single flow computers up to fully redundant cabinet

Description

Multiphase or wet gas flow measurement of oil, gas and water

Requirements

  • Determine the performance of the well
  • Changing composition over the well's lifetime

Description

Flow measurement of separated gas for reinjection into wells

Requirements

  • Determine the performance of the combined wells
  • Control gas flow to enable enhanced oil recovery

Description

Flow measurement of combined oil flow

Requirements

  • Meausuring oil to storage tanks or transport pipelines
  • High accuracy measurement for maximum control
  • Custody transfer measurement in case of changing ownership

Description

Flow monitoring of nitrogen seal gas for compressors

Requirements

  • Recognize leaks and defective seals quickly to prevent compressor damage
  • Indication of the flow

Overview

Reservoir measurement in natural gas production

Optimization of well production through flow data measurement

Usually a central system of large separator vessels will accept the multiphase product pipeline flows coming from separate wellheads, to produce the separate outputs as single phases of oil, gas and water, plus a slurry of sand or other solid sediments in water. The output of each valuable phase is measured, using Coriolis or ultrasonic custody transfer flowmeters, before transfer to the downstream processing plant or storage reservoirs.

Individual well measurement flow data is required to provide information for reservoir monitoring, and can help optimize well production. To achieve this, individual well flow streams are diverted to a test separator, where flow volume measurements of separated water, oil and gas streams are measured: in the gas stream, a wet gas flow meter is used to compensate for significant water content in the gas. These readings are used for well management, to adjust water injection rates or gas lift pressures, and for allocation measurement. The test flows are then returned to the main production separation systems. An alternative to the test separator for mixed oil, water and gas flows is now available with the introduction of the KROHNE Multiphase well test flowmeter, which can give separate flow data for the two liquid phases and measure the gas void fraction (gvf) from a single meter in the flowline.

Throughout the separation process KROHNE flowmeters and sensors are used to improve process and operational efficiency, for example in using TDR radar level gauges to control the separator interface levels, and in the control of degassing in the final crude oil storage reservoirs.

Email
Contact