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Additive Injection in Well Field using Wing Nut
Industry: Oil and Gas Field Services
SIC Code: 1389
Application: There are a number of companies
worldwide that provide oil and gas well field services.
One of the services offered provides for enhanced output
from the well. The service company injects various additives
to the well head. Turbine flowmeters are commonly used to
meter the liquid and gas additives. A specific application
identified by Dowell Schlumberger of Sugarland, Texas is
for monitoring high pressure gaseous nitrogen at pressures
of 0 - 10,000 PSI. During the injection process, Dowell
Schlumberger monitors a number of process variables to ultimately
improve the output of the well.
System Requirements: Accurate over pressure
range 0 - 10,000 PSI.
Rugged to withstand harsh field conditions of oil fields.
Lightweight for transportation between sites.
Totalize output of nitrogen gas in mass units.
Provide compensated analog output for data acquisition system.
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Solution: Hoffer Flow Controls, along
with Dowell Schlumberger, has designed a metering skid
that incorporates a turbine flowmeter and mass flow
computer. The skid consists of the following:
Hoffer Advantage: Wingnut turbine
flowmeter designed for pressures up to 15,000 PSI.
Wingnut housings to accommodate installation of high
pressure temperature and pressure transducers. Mass
flow computer. Aluminum frame supports meter run and
is used to carry the meter run. A manifold collector
box that accepts independent signal inputs from
flowmeters, temperature transmitter, pressure transducer.
Collector box provides for one cable assembly that
carries all process signals to the remote mass flow
computer.
Summary: Wingnut turbine flowmeter
is rugged and designed for oil field conditions. Flowmeter
provides wide operating flow range is is usable over
wide operating pressure range. Mass flow computer
provides mass flow calculations and corrects for temperature,
pressure and compressibility. Flow computer incorporates
"high alarm" to monitor for flow rates that
could over range the turbine flowmeter. Flow computer
improves flowmeter linearity via linearization.
The flow system allows the customer to accurately
monitor mass flow during the well treatment. Based
on the information obtained from the system they can
adjust the treatment of the well head to provide for
optimum product output.
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APPLICATION: OIL AND GAS
WELL SERVICING
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Thanks to Joel Clinkscales from Dowell Schlumberger
for his technical assistance with this application.
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