PRESENTATION BYONWELL COMPLETION AND TESTINGB.Tech-APER010209024

WELL TESTINGINTRODUCTION Well testing is the first major activity undertaken by production engineer after completion of successful drilling of wells. Following information are obtained from well testing:-Reservoir fluid composition. The average reservoir pressure.Reservoir characteristics. Optimum selection of bean size.Optimum selection of tubing and flow line.Well sickness and need of undertaking repair job.

PRODUCTION TESTING FACILITIES

CONVENTIONAL TESTING

TESTING WITH TUBING CONVEYED PERFORATION

TESTING WITH DRILL STEM TEST (DST) SYSTEM

PRODUCTION TESTING METHODOLOGY CONVENTIONAL TESTING Clearing and scraping Recording of CBL-VDL log Hermetical testing Changing over to mud Conventional perforation Running in of production string, packer testing and spacing out.

TESTING WITH TCP (SHOOT & PULL) Clearing and scraping Recording of CBL-VDL log Hermetical testing Changing over to mud Running in tubings single by single Running in of TCP string filled Correlation with CCL-GRL tool

TESTING WITH DST Clearing and scraping Recording of CBL-VDL log Hermetical testing Changing over to mud Running in tubings single by single Conventional perforation Running in of DST string

WELL ACTIVATION Displacement. Compressor application.Nitrogen application.CTU (Coil Tubing).Swabbing.Artificial lift. Flow MeasurementThis operation is under taken when the pay zone starts flowing on self after activation

TESTING EQUIPMENT DOWNHOLE EQUIPMENT Tubing Packer-Permanent or retrievable Selective seating nipple No go seating nipple Pup jointWire line entry guide.

SURFACE EQUIPMENT

X- MAS TREE

CHOKE MANIFOLD

SEPARATOR OUTER VEIWINNER VEIW

WELL COMPLETION A technique - where equipments are selected & installed in a well to get optimal production for entire foreseeable producing life of an oil or gas well.

Completion design is a function of numerous reservoir characteristics, such as permeability, porosity, saturation, pressure, temperatureand type of fluid

TYPES OF COMPLETIONOPEN HOLECASED & PERFORATED COMPLETIONLINER COMPLETION

PROCEDURE DRILLING IS DONE REMOVE HYDRILL BOP R/I TUBING WITH SCRAPER THEN WE PULL OUT TUBING WITH MUD CIRCULATION.AFTER THIS WE GO FOR CBL, VDL & GRLTHEN AGAIN WE R/I TUBINGS WITH BELL BOTTOM AFTER THIS WE GO FOR HERMETICAL TESTTESTED BLIND RAM OF BOP AT 250 ksc FOUND OK.THEN WE CHANGE OVER TO BRINE WATER OF SP. GRAVITY 1.02 SP.GRTHEN WE P/O TUBINGS FOR PERFORATIONAFTER THIS WE RUN IN TUBINGS

THEN WE REPLACE BOP WITH X-MAS TREE THEN WE TAKE OUT THE BRINE WITH THE HELP OF COMPRESSOR. THE COMPRESSOR TAKE THE AIR FROM SURROUNDING AND PUMP INTO THE WELL BORE TO REMOVE THE WELL FLUID. WE PUMP THE AIR THROUGH ANNULUS AND TAKE OUT THE WELL BORE FLUID THROUGH TUBING

LEAVE THE WELL AS IT WAS FOR 24 HRS

NITROGEN APPLICATION IF REQUIRED

THROUGH TUBING PERFORATIONWELL HEAD

THANKS