REAM HMI

REAM HMI - Standard REAM HMI with Military Connectors

General Info

The REAM HMI is a user-friendly data acquisition system that reads data from electronic sensors and displays the data on an 8.4” TFT touch screen, which acts as both an input and an output device. The system records the data on solid state Compact Flash memory and allows remote monitoring of the data.

The system is made of two main parts, REAM is a microprocessor based data acquisition board, which collects data from electronic sensors, digitise the readings, and supply the appropriate excitation voltage to the sensors. The HMI communicate with the REAM board to retrieve, display, and store the data.

REAM has 4 analogue channels, 2 counters, and 1 quadrature channel. The analogue channels accept output signals from sensors with 0-5 vdc, 0-10 vdc, or 4-20 mA. The counters accept pulse signals produced by proximity switches or magnetic pickups. Finally, the quadrature channel accepts quadrature signals (up/down counter).

HMI can communicate with up to 4 REAM boards simultaneously in addition to many other controllers or data acquisition modules. The outputs are available on Web Pages, which mean that they can be viewed remotely on a Local Area Network (LAN) or even a Wide Area Network (WAN), provided that proper Internet connections are available. This later feature means that the data can be viewed simultaneously from several terminals. There are many other features in the HMI and these can be tailored to client’s request.

The REAM HMI operates on 110 – 250 VAC or 24 VDC.

Measurements

For coiled tubing operations, the following describes the sensors and measurements needed.

Depth/Speed

Depth is measured using a quadrature encoder. A quadrature encoder is basically
an up/down counter and therefore can detect change of direction of motion. The rate
of change is the speed of the coiled tubing running-in or pulling-out of the well.

The encoder produces 600 pulses per revolution, thus can give a resolution of 1 in 600 parts of the
depth wheel perimeter.

Circulating/Well Head Pressure

These are measured using pressure sensors with a suitable range (up to 15,000 psi).
The pressure sensors have an accuracy of ± 1%.

The pressure sensors use G ¼” connection and are normally mounted on a T-junction
under the dash inside the control cabin.

String Weight

String weight can either be measured using a pressure sensor (see Circulating/Well Head
Pressure) or using an electronic load cell.

The electronic load cell will give direct readings of the string weight and is mounted on the injector, replacing the hydraulic load cell.

Flow Rate/Flow Total

Flow rates and totals are measured using either a proximity switch or a magnetic pickup.

The proximity switch is mounted close to some rotating part of the pump and will therefore count the number of revolutions of the pump. This in turn is interpreted as a flow volume.

The magnetic pickup is mounted in an insert for a magnetic pickup on a flow turbine. The magnetic pickup will then produce pulses that are proportional to the speed of the flow turbine.

Displays

LED displays can be used with the REAM HMI system to display digital readings of the various parameters being measured.

Up to 255 LED displays can be connected to one data collection unit and can be stationed up
to 1 kilometer away from the unit.

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