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Flow Level Pressure
Subsea Flow Meter Brochure Highlights Oil/Gas Flow Measurement
Engineers in search of a flow measurement solution designed for the high-pressure, space-constrained subsea oil and gas production environment will want to download a new brochure from McCrometer (USA) available in both English and Portuguese. The comprehensive brochure explains the advantages of the V-Cone Subsea Flow Meter, which operates at pressures of up to 15,000 psi and depths down to 5,000m.
TheV-Cone Subsea Flow Meter from McCrometer has been in operation from the North Sea to the Gulf of Mexico over several decades and is built to stand the test of time. McCrometer has been recognised by the oil and gas industry for its dedication to flow measurement excellence. An extensive reference list of customers and applications is available on request.
Pressure, space and weight constrained subsea and other oil and gas production environments require flow meters that will maintain accuracy under rugged operating conditions. Already cramped subsea installations are further complicated by the extensive straight pipe runs required by most flow meter measurement technologies in order to obtain accurate, repeatable measurement.
The advanced V-Cone Subsea Flow Meter is designed with built-in flow conditioning technology, which reduces straight pipe requirements
and allows it to fit into tight spaces. The V-Cone Subsea Flow Meter features a smaller installed footprint in applications for modules and manifolds than any other subsea flow meter technology. Its accuracy, repeatability and reliable performance have been proven through extensive third party testing protocols, including API 22.2 and field testing during years of subsea applications.
With self-conditioning differential pressure (dP) technology, the V-Cone Subsea Flow Meter reduces the upstream/downstream straight pipe run required Venturi Tubes by up to 70 percent. It only requires 0-1 straight pipe diameters upstream and 0-3 diameters downstream. This reduction in pipe requirements also reduces weight and provides cost savings in materials and installation labour.
The V-Cone Subsea Flow Meter provides a stable flow profile for reliable measurement, with system accuracy of ±1.0 percent of actual flow. It is ideal for the measurement of liquid or gas and is designed for line sizes from 2 to 16 inches, frequently with a turndown ratio of flow ashigh as a 50:1 and operating from Re ranges as low as 1000 and above.
Featuring a rugged, no-moving-parts cone design, the V-Cone Subsea Flow Meter has no need for routine maintenance or re-calibration and is ideal for unattended, long-term reliable performance. Its contour-shaped cone directs flow towards the outside of the pipe wall, so the beta edge is not subject to wear and results in a long-life instrument with a low life-cycle cost.
The cone in the pipe forms very short vortices as the fluid flows past the cone. These short vortices create a low amplitude, high frequency signal for excellent signal stability. The clean signal enables a wide measurement range and quick response time for control purposes.
The pressure difference exhibited between the static line pressure and the low pressure created downstream of the cone is measured via two pressure sensing taps, one placed slightly upstream of the cone and the other located in the downstream face of the cone itself. The pressure difference is then incorporated into a derivation of the Bernoulli equation to determine the fluid flow rate.
Reader Reply Card No 153
Technip Selects Main Control Valve Supplier for Algiers Reginery Upgrade Project
Technip has selected Emerson Process Management as the main supplier of control valves for the Algiers Refinery rehabilitation and adaptation project. The Algiers refinery, located 10 km south of Algiers, in Algeria, is being revamped to increase crude oil processing capacity and ensure it can produce gasoline at specifications similar to those used throughout Europe.
Emerson will supply approximately 600 of its Fisher control valves and regulators, including rotary, globe and butterfly type devices. The valves will be deployed throughout the refinery, including within the residual fluid catalytic cracking unit, naphtha processing units and new LPG storage unit.
"Emerson was selected as the main control valve supplier because its Fisher valves are proven to provide high levels of accuracy and reliability in demanding refinery applications," said Pascal Marette, Senior Procurement Manager, Technip. "The level of support offered was also critical. Emerson’s local team includes experts with extensive experience of providing solutions to refinery applications."
The modernisation of the instrumentation and control valves will help the refinery optimise the various process units. This will help to sustain the production of clean fuels both for the local and export markets, as well as reduce maintenance and plant shutdown costs.
The Fisher valves will be supplied with a range of trims and silencers. Suitable for severe-service applications, they are designed to provide long lasting, fast and safe operation, as well as reduced fugitive emissions.
Emerson’s new FIELDVUE DVC6200 digital valve controller, incorporating performance diagnostics and the latest HART (version 7) communications, will enable control valves to be easily integrated into the existing control system. ValveLink software will work with the existing control system to provide online diagnostics that can help users identify potential problems so that they can be addressed before operations are affected.
The Algiers refinery was constructed in 1964 and produces motor fuels and LPG for the local market, and naphtha and fuel oil for export. The refinery is owned by Sonatrach, which is the largest oil and gas company in Algeria and Africa. Technip is the EPC contractor for the Rehabilitation and Adaptation project. The project is part of a broader refinery upgrade programme initiated by Sonatrach for the production of clean fuels in Algeria.
Reader Reply Card No 154
Measuring Flow with Ultrasound
Mass Flow ONLINE B.V. (USA) presents its SONIC-VIEW Series, an ultrasonic flow meter for water and aqueous solutions. The compact, non-obstructive instrument operates on the basis of two ultrasonic transducers, mounted on the outer surface of a straight, stainless steel tube. The flow meter does not contain any moving parts, causes virtually no pressure loss and can be mounted in any position, requiring no straight inlet or outlet runs. Its sensor housing is IP54 protected.
The in-line ultrasonic flow meters are available in nominal sizes DN10 and DN20 for flow ranges of 1,5…30 l/min respectively 5…110 l/min. Both versions
allow frequency and analogue output proportional to the flow and an additional alarm output. The alarm status is indicated by an LED and the alarm level can easily be
adjusted by means of a rotary switch on the front cover. Reader Reply Card No 155
New Level Meter Introduced
KROHNE, Inc. (Netherlands), a global technology specialist in the development, manufacture and distribution of accurate, reliable and cost effective measuring instruments for the process industries, announces the new OPTIFLEX 2200 C/F level meter for liquids and solids, which features software-based Dynamic Parasite Rejection (DPR) technology that eliminates false reflections caused by environmental disturbances and product build-up. The 2-wire device is the newest addition to KROHNE’s Time Domain Reflectometry (TDR) guided radar level meters.
OPTIFLEX 2200 C/F is a cost-effective device for tank and silo applications in the chemical industry, as well as in the oil and gas, energy, waste water, mining or pulp and paper sectors. It is ideal for replacing traditional level meters that require higher maintenance, including displacer, RF capacitance, conductive and pressure level meters.
Available with a variety of probes to measure liquids up to 130 feet (40 meters) and solids up to 66 feet (20 meters), the OPTIFLEX 2200 C/F can handle process temperatures up to 570°F (300°C) and pressures up to 580 psig (40 bar).
Unlike other level meters, the OPTIFLEX 2200 C/F provides a remote converter that can be installed up to 328 feet (100 m) from the probe. The snap coupling system permits removal of the housing under process conditions. The level meter complies with the requirement of the safety integrity level SIL 2 (according to IEC 61508) and can be used for switch or transmitter function in safety-related systems.
Because the state-of-the-art TDR technology used in the OPTIFLEX 2200 C/F measures level independent from such physical property variations as dielectric constants, pressure or density, the meter is not affected by variations in product characteristics.
Reader Reply Card No 156
APRIL / MAY 2013 •
WWW.PETRO-ONLINE.COM
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