New computer designed for gas flow measurement
Here's a new computer for natural gas flow measurement.
The FloBoss 103 flow manager measures static and differential pressures to a reference accuracy of up to ±0.075%. Gas flow is calculated for volume and energy in accordance with the 1992 AGA3 flow and AGA8 supercompressibility equations, and the unit is compliant with API Chapter 21.1.
Very low power consumption allows the unit to be self-contained for a typical Class I, Division 1 metering application.
The built-in rechargeable battery pack will keep the unit operating for 1 month without recharging, while permitting data to be retrieved by a host once each day. More frequent data retrieval is possible with an external 2.5 w solar panel.
The 103 provides an audit trail for measured and calculated values. Up to 15 data points can be archived on an hourly and daily basis for up to 35 days.
Average values are provided for pressure and temperature measurements every 10 min.
This allows operating companies to operate wells for improved production. To assist in troubleshooting site problems, the unit logs the most recent 240 events and 240 alarms.
The unit offers PID loop control, logic and sequencing control, optional four channels of I/O, and an optional port for EIA-232 or dial-up communications.
In addition, users have a choice of native ROC or MODBUS protocols for added flexibility when interfacing to a host or network.
Source: Emerson Process Mangement Information Center, Box 3064, Cedar Rapids, IA 52406.
New techniques provide ocean current profile data
A range of techniques has been developed that provides ocean current profile data to support deepwater drilling and field development. The techniques have already been put to use on Schiehallion and Foinaven fields west of the Shetland Islands, in the Gulf of Mexico, and off Brazil.
The new techniques produce criteria that are representative of deepwater conditions.
The company has applied advanced analysis techniques that take account of the vertical structure of real current profiles.
Characteristic profiles with current speed and direction can be provided for particular engineering applications: the firm has, for example, derived new current profile occurrence criteria for use in riser fatigue and operability assessments.
It's a type of data reduction in which many thousands of individually measured or modeled profiles can be reduced to a much smaller number of characteristic profiles. Each of these has an associated percentage frequency of occurrence.
The first project using the new criteria to calculate riser fatigue was on a generic feasibility study for a group of deepwater operators; more recently they were used to reassess the design basis for Schiehallion and Foinaven fields on behalf of BP PLC, based on over 5 years of measured current profile data.
In both cases, use of the new criteria led to increased riser fatigue lives, the firm says.
Latest use of the methods has seen them applied to support riser design and operability assessments off Brazil, where they provide profile occurrence criteria, including values of speed and direction, and in the deepwater Gulf of Mexico where numerical model data were used.
Source: Fugro GEOS Ltd., Hargreaves Rd., Swindon SN25 5AL, UK.
Free brochure discusses direct drive pumps
A new applications and specifications brochure details API direct drive pumps featuring a single stage centrifugal design.
A large, full color cross-section diagram of the LMV-Series direct drive pump is featured in the free brochure.
Easy-to-read charts show head-to-flow ratios for performance, specific speed efficiency, and NPSH advantages.
Source: Sundyne Corp., 14845 W. 64th Ave., Arvada, CO 80007.
New gas analyzer
The new Titan-OL provides real-time, multicomponent extractive analysis of on-line process gases and facility-wide ambient air monitoring.
The new systems are packaged in appropriate NEMA enclosures (up to and including Class 1, Div. 1) and contain a rugged, high resolution FTIR spectrometer, gas cell, and sample manifold.
Standard manifold configurations include purge, calibration lines, and up to 16 sample sources. When appropriate, optical and electronic components are contained in a hermetically sealed cast aluminum chassis within the NEMA enclosure.
Systems can be fully automated with this firm's AutoQuant software package, including trend analysis charts, manifold control, and integration of alarm and control functions with plant process hardware and software.
A choice of permanently aligned and corrosion resistant sample cells is available to suit the characteristics of a variety of sample streams.
Source: MIDAC Corp., 17911 Fitch Ave., Irvine, CA 92614.
