Detectors and Monitors

sandq

SandQ Monitor

Every factory owner or operator wants to operate his plant as efficiently and profitably as possible. An oil or gas well can be regarded as a factory, and the ClampOn SandQ® Monitor gives operators the best tool for maximizing profits. ClampOn’s instruments are in operation on thousands of wells every day, and the company is the world’s largest supplier of sand monitoring systems. The ClampOn SandQ Monitor is the answer for operators who want to keep their wells producing safely at the highest level possible; i.e. anyone who needs a quantitative, real-time and accurate measure of produced sand particles

How it works

In order to measure the amount of sand being produced, we have combined two instruments into one. The SandQ has built in mix flow velocity measurement. The sensor is installed a few pipe diameters downstream of a bend, where the flow is turbulent. The SandQ measures sand/particles through passive ultrasonic technology; it detects the ultrasonic signal that is generated by particles impacting on the inside of the pipe wall, just after the bend where the sensor is located.
Product flow is measured using an active Pulse-Doppler technique. The built-in Doppler element tracks the particles/bubbles in the flow via an extremely high updating pulse rate (8000 pings per second). The pulse rate is so rapid that at typical flow velocities of 0.3 to 20 m/sec, the distance a bubble or particle travels between pulses is much less than the beam-width of the pulse. This allows the bubbles or particles in the fluid to be «pictured» by several pulses, thus tracking the movement of the particles. ClampOn developed this technique in order to handle challenging multiphase measurements, enabling the instrument to trend the flow very accurately. The flowing media may be a single-phase liquid or a multiphase flow, and all signal processing is done internally by a DSP engine before the results are sent to a computer or control system (no Calculating Interface Unit required).
The SandQ is delivered fully calibrated and there is no need for individual site calibration to operate this unit, which can be simply clamped to the pipe wall.
With the ClampOn SandQ, field operators can evaluate sand and flow data in real time and make the decisions required for optimized production.

Integration

The ClampOn SandQ shares the same interfaces and communication protocols as the existing DSP Particle Monitor. This means that all clients who already use ClampOn instruments can integrate the new SandQ into their existing system – it is simply a quick swap. The SandQ is intrinsically safe, and carries Ex ia IIB approval.
All our instruments are equipped with both digital and analogue interface. Our instruments can be integrated into any control system. A computer with our software is often used in-between our instruments and the control system. It is recommended to use the digital interface for following reasons:
Two way communication enabling instrument software update and configuration
Full signal range resolution
All sensor data can be transmitted
No signal loss

dsp 06 particle monitor

DSP-06 Particle Monitor

Any owner or operator of a factory would surely like to operate it as efficiently and profitably as possible. An oil or gas well can be regarded as a factory, and the ClampOn sand detector gives operators the best tool for maximizing profits. ClampOn’s DSP systems operate on thousands of wells every year, and the company is the world’s largest supplier of sand monitoring systems. ClampOn is the natural choice for sand monitoring and management programs!

How it works

The ClampOn DSP-06 Particle Monitor is based on the ClampOn “Ultrasonic Intelligent Sensor” technology. The sensor is installed in/immediately after a 90 degree bend, where the particles/solids impact the inside of the pipe wall, generating ultrasound. The ultrasonic signal is transmitted through the pipe wall and picked up by the acoustic sensor.
In the patented intelligent ClampOn sensor, the signal is processed internally by a DSP engine and filtered before being sent onwards to the computer or the control system (no Calculating Interface Unit required). Here the user can evaluate the data in real time and make the decisions needed for profitable production.

Advantages

Sand production in oil and gas wells is a serious issue facing oil and gas producers. The challenge is not merely to avoid sand production, but also to increase commercial well productivity, as even small quantities of particles in the well flow can cause significant damage. As an operator you are interested in maximum production and profit from your wells, no matter what technology you use. Operators all over the world have made ClampOn their preferred supplier of sand monitoring systems, due to the patented technology that turns their wells into profit generators.
The ClampOn DSP-06 model incorporates a new filtering technique that makes the particle monitor an extremely useful tool for analyzing the true nature of sand production, helping to control it and finally, increasing the profit from the well! This filtering technique is the result of integrating our experience of thousands of wells, analyzing data and using the results to enhance the technology used in our DSP-06 model.
The enormous capacity of the DSP sensor (the only one on the market) makes it possible to scan through a frequency range of 1 MHz 128 times per second. This illustrates the capacity of our technology and of the filtering technique that is at the heart of acquiring and processing sand data.
The following figures show a sensor installed close to a choke valve on a gas well operating at high pressure and high velocity. The figures illustrate what the signal looked like when using a traditional/alternative system compared to using the new DSP-06 filtering technology. The new filter (ref. Figure 2) was able in this case to reduce unwanted noise by a factor of 500 compared to alternative solutions.
Digital signal processing – the way ahead
The DSP-06 features complete digitalisation, eliminating analogue filters, circuits and amplifiers. The technology incorporates a powerful DSP unit with a large amount of flash RAM, running-feature packed modular software. The sensor operates simultaneously in several ultrasonic frequency ranges, allowing a whole series of new signal processing features to be implemented, including the latest filtering technique. Different types of chokes or flow conditions that generate sound unrelated to sand noise are analyzed and reduced dramatically via the advanced processing and filtering technique in the DSP-06 model. It also improves accuracy and repeatability, important factors in quantifying sand production and a crucial tool in your daily sand management operation.
No other technology comes close to what the ClampOn 2006 model offers customers who need to generate profitable and sand-free production!

Integration

All our instruments are equipped with both digital and analogue interface, and comply with all common protocols. Our instruments can easily be integrated into any existing or new control system. A computer with our software is often used in-between our instruments and the control system. The computer will be used for sand calculation by using the RAW data from our sand detectors and flow data from third party systems, then output calculated sand rate to the control system. All recorded data will also be stored for analyzing and calibration purposes. We always recommend using the digital interface due to following benefits:
Two way communication enabling instrument software update and configuration
Full signal range resolution
All sensor data can be transmitted
No signal loss

leak monitor

Leak Monitor

The ClampOn DSP Leak Monitor detects small and medium leaks or flow-throughs, even with low differential pressure over the measuring point on pipes and valves. The ClampOn DSP Leak Monitor has been developed with the aim of offering a product that can quantify a leak through a closed valve. The ClampOn DSP Leak Monitor is qualified as a subsea and topside monitor.

How it works

The basic theory is that a leak creates a very high-frequency noise that can be monitored by an ultrasonic sensor. In a «non-leak» situation the ultrasonic pattern will be stable, but when a leak occurs the signature will change drastically. ClampOn’s DSP technology distinguishes and eliminates background noise unrelated to leakages so that the hiss from the leaks can warn the operator. The system also includes a program or data-base that helps to monitor and indicate the volume of the leak.
The ClampOn DSP Leak Monitor is the result of a joint venture project involving several participants in the petroleum industry.
The ClampOn DSP Leak Monitor is designed to be installed at critical points such as valves, flanges, joints, etc., and can monitor very small leakages. A pressure differential of as little as 1 bar can be monitored in gases, and 3 bar in liquids.

Advantages

A leak in an oil or gas flow line is a highly dangerous situation – upstream as well as downstream, so it is extremely important for the operator to be warned about any leak immediately should it occur.
A leak in a flow line, valve, flange or any other component can compromise safety and may also lead to a shutdown at the production stage or down-stream at a refinery or terminal.
A product leak normally has a very low flow-rate, which is determined by the size of the defect, the properties of the fluid and the pressure differential. There are a number of advantages in using the DSP Leak Monitor to monitor valves:
Reduced loss to flare
Gas leak to the sea
Reduced loss to the atmosphere
Reduced process loss
Maintenance planning
The ClampOn DSP Leak Monitor helps operators identify and quantify sources of gas/liquid leakages, thus enabling them to take appropriate action. Customers have successfully used the ClampOn Leak Monitor to identify cross-flow in valves connected to the manifold.

Integration

Our instruments can easily be integrated into any existing or new control system. A computer with our software is often used in-between our instruments and the control system. The computer will be used for calculations and all recorded data will be stored for analyzing and calibration purposes.
We always recommend using the digital interface due to following benefits:
Two way communication enabling instrument software update and configuration
Full signal range resolution
All sensor data can be transmitted
No signal loss

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topside corrosion erosion

Corrosion-Erosion Monitor (CEM)

The patented ClampOn DSP Corrosion-Erosion Monitor (CEM) has been designed to monitor the average wall thickness of pipes, containers and any large object that requires corrosion/erosion monitoring. The ClampOn CEM system utilizes a unique method of monitoring wall thickness loss by the use of clamp-on sensors. A number of transducers measure corrosion-erosion by transmitting ultrasonic signals that propagate through pipe material. Using ClampOn acoustic transducers means that no drilling or welding that would cause loss of production is required.

How it works

The working principle of the ClampOn CEM is based on transmitting ultrasonic signals that propagate through the pipe-wall. The dispersive characteristics of a group of guided acoustic waves, called Lamb modes, are exploited to indicate a mean change in wall thickness relative to reference values acquired during the installation of the CEM system.
The permanently installed CEM system ensures that measurements are repeated frequently and in exactly the same manner, thereby eliminating the weaknesses of manual ultrasonic thickness gauging. Wall thickness trends are generated automatically and can be observed in real time.

Advantages

The Corrosion-Erosion Monitor consists of a Head Unit and up to eight smaller transducers.
The Head Unit processes and controls the signals, communicating with the electromagnetic ultrasonic transducers which are fixed to the selected pipe section. The signal path follows the metal structure between the transceivers in operation, generating a matrix of measurements with thickness information. The number of Head Units and transducers to be used is decided by the client in consultation with ClampOn.
Testing has shown the ClampOn CEM to be both physically robust and capable of withstanding changes in pipe temperature. The system is capable of performing measurements on pipe diameters from 50 mm (2?) and upwards and on material thicknesses ranging from 4 mm to 35 mm (0.157? to 1.378?). Changes in average wall thickness of as little as 1% can be measured in real time.
The signal path follows the metal structure between the transducers in operation, which in turn generates a matrix of all the measurements.

Integration

Our Corrosion Erosion Monitor will be interfaced using digital RS485 to a computer running our corrosion erosion software. The computer will then interface with the Control system using all available interfaces and protocols. It is optional how much data that will be sent across to the control system. As a minimum the average wall thickness will be used.

vibration monitor sensor

DSP Vibration Monitor

Vibrations always start at very high frequencies and change to lower frequencies as the condition develops. The ClampOn DSP Vibration Monitor is an ideal instrument to monitor vibrations in 3D on structures and pipelines. The system is designed with a broadband frequency response from 0,125 Hz to 262 kHz, suitable for early detection of vibrations in objects such as:
• Flow lines, jumpers
• Pumps, rotary machinery
• Slugs etc.

How it works

The vibrations are monitored by utilizing two different measurement principles in combination.
Early warning, shear waves propagating from metal friction are picked up by an ultrasonic element. These measurements will give an indication of potential fault conditions as all those starts high up in frequency. 3D Vibrations from 0.125Hz to 1000Hz will be quantified by an accelerometer.
To optimize both metering schemes, the Vibration Monitor 3D needs good mechanical and acoustic coupling to the structure is monitoring.
The ClampOn DSP Vibration Monitor 3D can also function as a regular sand detector, in parallel with the vibration monitoring, and in real time.

Well Collision Detector

The ClampOn DSP Well Collision Detector is designed to prevent collisions involving directional drilling within the proximity of existing wells. ClampOn DSP Well Collision Detectors provide operators with real time data so that collision risk analysis calculations are not the only factor determining the bit’s proximity to existing wells.
This method uses ClampOn non-invasive ultrasonic sensor technology in the form of a spectrum analyzer. The spectrum analyzer digitizes the ultrasound allowing frequency analysis in real-time.

How it works

The process involves ClampOn DSP Well Collision Detectors being installed topside on all existing wells in close proximity to the well being drilled. The drill string’s approach to existing wells will create an increase in the ultrasonic signal being observed topside. When dramatic ultrasonic increases are observed, drilling will be halted and data analyzed. After analysis is complete, the drill string can be diverted or drilling can resume with the confidence that a collision has been avoided or that initial calculations were confirmed.
The use of directional drilling is only going to increase as fields mature. Proper collision avoidance techniques should be considered when preparing for the drilling operations. The ClampOn DSP Well Collision Detector provides the operator with an advanced real time collision monitoring system with minimal equipment and personnel requirements.

Procedure Goals

Prevent drill bit from colliding with existing well casing during directional drilling operations
Give engineers physical proof of drill strings proximity to existing wells
Prevent environmental damages caused by collisions
Help to increase safe drilling speed and decrease downtime caused by collisions
Installation
Easy non-invasive installation of hardware
No hot work permit required
Intrinsically safe sensors
No need for production shut-down to install Minimal impact to daily operations on the platform Mounted on conductor pipe

nr2 spectrum analyser

ClampOn DSP Spectrum Analyzer

The ClampOn DSP Spectrum Analyzer digitizes the ultrasound from 20 to 1000 KHz, performs frequency analysis in real-time and sends the spectrum digitally to a PC where application specific algorithms can be applied and the results stored and presented.
This makes the Spectrum Analyzer a compact condition supervisor that can alert the user to cracks, corrosion and vibration in a range of different applications, from pipelines to rotating machinery, chokes, valves etc.
The Analyzer utilizes non-intrusive ultrasonic technology; the tool is attached (clamped on) to the outside of the structure it is to monitor.

 

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If you require further information on this product or would like a quotation, please contact dp-flow on:

email: 
sales +44 1923 462500

Supplied by DP-Flow