Optimization With or Without PLUNGER INSTALLED

Optimization With or Without PLUNGER INSTALLED. A plunger-lift optimization system is a low-cost, efficient method ofincreasing and optimizing production in oil and gas wells, which have developed marginal flow characteristics. Without a Plunger on the well the Fisher ROC Optimization program may still be used to optimize production. See mode 2 below (Critical Flow vs. Time Off) . The basics of the plunger is to open and close the well shutoff valve atthe optimum times, to bring up the plunger and the contaminants andmaximize natural gas production. A well without a deliquification technique will stop flowing or slow down and become a non-productivewell, long before a properly deliquified well. The plunger lift has lowenergy cost, low environmental impact, low capitol investment and low maintenance cost. Fisher ROC RTU's can be used as controllers to offera variety of criteria to control the plunger and view the resulting well characteristics. The original controllers were just timers, withfixed open and close cycles. Measuring the various pressures in thesystem allows intelligent and reactive control. The pressures oftenmeasured are casing, tubing, line, and differential (DP). The other items measured are plunger arrival times, plunger velocity, flow rates,temperatures and status of various auxiliary equipment: oil tank level,compressor status. Plunger travel is normally provided by formationgas stored in the casing annulus during a shut-in period. As the wellis opened and the tubing pressure allowed to decrease, the storedcasing gas moves around the end of the tubing and pushes the plunger tothe surface. Outlaw Optimization for FisherROC's also includes ESD features, called PPESD or Pipeline PressureShut Down, that is designed to protect the pipeline and work with theOptimization program in the ROC. Download Links: or send a message for More Info to http://www.icscada.ca/?page=MoreInfo Installation and User Manual FLO BOSS 103 V6.0.bin ROC 107 PPSD_ESD_FB107_V6.0.bin ROC300 FLASH PAC_OPT_PPSD_ESD V6.0.H00       (Ctrl Right click to download) ROC300_PPSD_ESD_ROC300_ROCPAC_V6.0.H00     (Ctrl Right click to download) FLO BOSS 407 V6.0.bin OPT Ver6_Display_File.dsp Mode 2 (Critical Flow vs. Time Off) BasicOn / Off control with no requirement for additional inputs (Casingpressure or Plunger sensor). Use of Critical Flow allows the on time tovary according to the well's ability to produce gas. This mode providesautomatic On/Off control based on a critical flow set point and a fixedtime off period. The amount of time that the valve will be open willvary depending on the characteristics of the well. Plunger is optionalwith this mode. The cycle is started in the on or off time according tothe Start Position. The Minimum On Time Before Critical Flow Timer(MOTBCF Timer) will begin counting down at the start of the on cycle.The purpose of this timer is to permit flow for a minimum period oftime before checking flow rate, and if a plunger is installed, to allowenough time for the plunger to arrive. Once the MOTBCF Timer hasexpired, the critical flow set point determines how long the well willstay open. If the gas flow rate drops below the critical flow set point the Critical Flow Bypass timer will begin counting down. The contr olvalve will remain open during this time. If the gas flow rate risesabove the critical flow set point before the Critical Flow Bypass timerexpires, the timer will reset and the valve will remain open. If thebypass timer expires, the valve will close and the program will go intothe Time Off cycle. For liquid unloadingsituations ensure that the Critical Flow Bypass Timer is not set tooshort to avoid switching to the Time Off Cycle prematurely. A fixed value m aybe entered for the critical flow set point, or the user may enable thecritical flow calculation based on Gray's Equation. (As pictured atLeft) Ideallythe pressure used is from a wellhead-mounted tubing pressuretransmitter, although the meter run static pressure may also be used. Values for the water fraction and tubing size must be entered before the calculation is enabled.
* Once set points have been entered type a 1 in Start/Stop on the User Display screen and click Apply. * The most recent 10 plunger velocity and arrival time stamp are available on User Display if plunger sensor is installed. * Changing timer setpoints when the timer is counting will have no effect until the next cycle. * To force setpoint changes to take effect immediately Stop and then Start the mode. * A critical flow set point change will take effect immediately. The minimum required configuration on the User Display screen: * STEP 1 - Confirm all System Input /Output Parameters has been probably setup or initialized. * If using program internal calculated critical flow, SELECT "Cr.Flow Override Disabled". * If using manual critical flow setpoint, SELECT "Cr.Flow Override Enabled", also ENTER a Cr.Flow Override Value. * Values for the Tubing Diameter and Water Fraction must be entered if the Continuous Critical Flow calculation is to be used. * STEP 2 - Confirm Time On, Time On Bypass and Time Off setpoint value has been entered correctly. * STEP 3 - If plunger sensor is installed, all plunger parameter set points MUST be initialized or corrected. * STEP 4 - Confirm program is currently on Mode 2. * STEP 5 - Select START and click Apply button to start optimization program as. For a FREE 24 bench evaluation, please go to http://www.icscada.ca/ visit http://www.icscada.ca/?page=MoreInfo to inform us of your situation, and we will attempt to provide a solution for you.
Formore information or a demo on an interface HMI to the Fisher ROCOptimization is required Please visit the http://www.icscada.ca/  Icscadais a networked Internet ready HMI with modbus and ROC protocols readyto go. A fully running demo is available at http://www.icscada.ca/outlaw See a Live demo today at http://www.icscada.ca/outlaw/

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