upstream measurement & automation conference,...

UPSTREAM MEASUREMENT & AUTOMATION CONFERENCE, FEBRUARY 2017

B.J. Walker, Technical Solutions Specialist

Controlling costs of chemicalsin the field

September 12, 2017 Slide 2

Chemicals may representyour largest operationalexpense at a well

The ABB Solution solvesthe problem by:

–Take control of yourchemical inventory andmanage chemical costs

–Automate intentionalchemical injection based onwell conditions

–Detect leakage anddamaged pumps before adowntime event occurs

The WellheadManagement Systemaddresses the following:

–How much chemical am Iusing?

–How can I better forecastand budget for chemicals?

–When will my chemicals runout and affect the process?

–Are my chemical tanksgetting filled as scheduled?

–How can I detect leaks,blockages and brokenpumps in my process?

The problem we are solving….


–Our solution is a purpose built modular management and control system designed to provideoperational efficiency in chemical usage and inventory.

–The value of this solution:

• Designed install packages modularto fit any system

• Multiple control schemes bridginga variety of chemical types

• Real time inventory and meaningfulalarms

• Custom data retention and eventlogging for usage analysis

• Additional built-in Artificial Liftapplications available for the lifecycle of the well

The ABB SolutionChemical inventory management and control

Wel

lpro

duc

tion

Time

Freeflowing Chemicalinjection

Plunger lift Gas lift

Hardware

LST100 software configuration

Site wiring – Startup

Control schemes

PCCU – Entry mode

Alarming

Trending

Results


Chemical inventory management and control


Solution hardware

–G4 XRC Controller

–Mag Meter

–LST100 Ultrasonic Level Transmitter

–Power System

–Hand/Off/Auto Switch

Optional

–TFIO Modules

–WellTell Wireless I/O Client

–Multivariable Transmitters

–Pressure Transmitters

–Keypad / HMI

HardwareChemical inventory management and control


Introducing the LST100

Specifically designed for use on chemical tanks, ABB’s LST100ultrasonic level transmitter offers low power, accuratemeasurement at an affordable cost.

This non-contact, easy to install, chemically resistant device letsyou keep track of the most expensive consumable on the padsite; chemicals.

Utilizing ultrasonic technology, you now have the ability to:

–Monitor and inventory every chemical tank in your field

–Alarms in the controller monitoring for leaks

–Refill alarm set points for re-order of product

–Tank fill notifications when the product is delivered

–Volume calculations.

Ultrasonic level for upstream oil & gasChemical inventory management and control

Accurately track andmeasure chemicals, themost expensiveconsumable on your site


–The typical human can hear frequencies between 20Hz and 20kHz

–Some medical applications use higher frequencies

–For level measurement we use the frequencies just above human hearing capability

Ultrasonic is sound above human hearing capabilityHow the technology works

20Hz 20kHz 2MHz 200MHz

Low bassnotes

Infrasound Acoustic Ultrasound

LevelMeasurement

Medical


The measurement is done by timing the ‘Time of Flight’ of the echoHow the technology works

–A pulse is generated and the time is measured until the echo is received.

–The sensor generates a large pulse

–This pulse bounces back from the target towards the sensor

–Knowing the speed of sound we can now calculate the distance to the surface

Distance

Echo

Transmitted wave


–This is a visualization of what the echo would look like on an oscilloscope.

–At position zero on the x-axis is shows the position of the face of the sensor. An echo here wouldindicate a full tank.

–At the ‘Tank Empty’ position, an echo here indicates an empty tank

–The echo shown here shows us where the liquid surface is. In this case it is at about half full.

Introducing the echoMeasurement technique

Tank emptyTank full

Liquidsurface


–Here are some examples to show the connection between an echo on the oscilloscope and thelevel in the tank

Introducing the echoMeasurement technique


–After generating a pulse, there is a period of time where we have some ringing. This is due to theelectronics and mechanical vibrations that need to settle after being pulsed

–The higher the power, and the longer we pulse, the longer it takes to settle the channel before wecan perform any meaningful measurement

Blanking distanceMeasurement technique

Blankingnoise

Blanking distance is a knowndistance. No echo is accepted as a

measurement before this line.


Challenge

–Your chemical tanks are remote, and powered by battery andsolar power

–Common level instruments require too high a voltage andconsume too much power

Solution

–The LST100 was designed to work on a typical 12V solar/batterypower source

–Even when batteries are running low, the instrument is fullyfunctional as low as 9V

Results

–More instruments can be powered per solar panel than with anyother level instrument, reducing your cost of ownership

Designed to run from solar and battery power sourcesLST100 product benefits


Challenge

–Ultrasonic level instruments have a blanking distance associatedwith them where no meaningful measurement is possible

–In a small tank of only 3 ft. high, a 1ft. Blanking distance makes itimpossible to measure the top 30% of our application and isunacceptable

Solution

–The LST100 has a specially designed bracket that allows us tomeasure accurately up to 3" from the top of the tank

–Even when above this 3" distance, the instrument reliably detects a‘tank full’ condition

Results

–Have full visibility over the full possible range of your tanks, includingreliable detection of over-fill conditions

Reliable measurement all the way to the top of the tankLST100 product benefits


Challenge

–An instrument is required that can survive outdoor. It requires nocover or external housing

–The instrument should be able to survive chemically harshenvironments. No corrosion should take place in the presence ofthese chemicals

Solution

–LST100 is rated IP67 / NEMA 4X. it can survive flooding and roughoutdoor weather conditions. No cover is needed

–The unit is made of PVDF for excellent corrosion resistance. Being incontact with chemicals will not corrode this transmitter

Results

–A robust instrument that will give you many years of service

Made to survive the outdoor and chemical conditionsLST100 product benefits


LST100

LST100

One standard instrument

Powered by DC 9 … 16 V

IP66/67 or NEMA 4X

-40ºF - 185ºF

-4 to 44 psi (-0.25 to 3 bar)

±0.12 inch or 0.25% of fullspan with temperaturecompensation

Repeatability ±0.25%

SensorsFM approval

F3 cert.

Non sparking

Class I Div 2

No need forsafety barrier

At a glanceLST100

F4 cert.

Intrinsic Safe

Class I Div 1

Needs safetybarriers

C06 sensor

20ft range

10" blanking

1.5" NPTthread (U6)

PVDF forchemicallyaggressiveenvironments

75kHz sensor

*Shipsstandard with4" mountingbracket

C10 sensor

30ft range

14" blanking

2" NPT thread(U2)

PVDF forchemicallyaggressiveenvironments

50kHz sensor


LST100 terminal

–The units has 6 terminals to wire for power,DAC and RS485

–The units should be grounded, and can bedone using a cable shield

–The ‘Test’ pins are used to ground themeasurement circuit under very specificproblem conditions

The terminalElectrical connections