ENI_Well_Test_Procedures_Manual

المهاجر · #1 2008-04-01, 08:35 PM

ENI_Well_Test_Procedures_Manual

إقتباس:


	INDEX 1. INTRODUCTION ...................................................................... ........................................ 8 1.1 PURPOSE OF THE MANUAL ...................................................................... ........ 8 1.2 IMPLEMENTATION ...................................................................... ........................ 8 1.3 UPDATING, AMENDMENT, CONTROL & DEROGATION................................... 9 1.4 OBJECTIVES............................................................ ............................................ 9 1.5 DRILLING INSTALLATIONS......................................................... ....................... 10 2. TYPES OF PRODUCTION TEST ...................................................................... ............... 11 2.1 DRAWDOWN.............................................................. .......................................... 11 2.2 MULTI-RATE DRAWDOWN.............................................................. ................... 11 2.3 BUILD-UP.................................................................... ......................................... 11 2.4 DELIVERABILITY........................................................ ......................................... 11 2.4.1 FLOW-ON-FLOW.................................................................. ................ 12 2.4.2 ISOCHRONAL ...................................................................... ................ 12 2.4.3 MODIFIED ISOCHRONAL .................................................................... 12 2.4.4 RESERVOIR LIMIT................................................................. .............. 12 2.5 INTERFERENCE ...................................................................... ............................ 13 2.6 INJECTIVITY........................................................... .............................................. 13 3. GENERAL ROLES AND RESPONSIBILITIES...................................................... ........... 14 3.1 RESPONSIBILITIES AND DUTIES................................................................ ....... 14 3.1.1 COMPANY DRILLING AND COMPLETION SUPERVISOR................. 14 3.1.2 COMPANY JUNIOR DRILLING AND COMPLETION SUPERVISOR............................................................ ........................... 15 3.1.3 COMPANY DRILLING ENGINEER....................................................... 15 3.1.4 COMPANY PRODUCTION TEST SUPERVISOR ................................. 15 3.1.5 COMPANY WELL SITE GEOLOGIST .................................................. 15 3.1.6 CONTRACTOR TOOLPUSHER ........................................................... 16 3.1.7 CONTRACT PRODUCTION TEST CHIEF OPERATOR....................... 16 3.1.8 CONTRACTOR DOWNHOLE TOOL OPERATOR ............................... 16 3.1.9 WIRELINE SUPERVISOR............................................................ ......... 16 3.1.10 COMPANY STIMULATION ENGINEER................................................ 16 3.1.11 COMPANY RESERVOIR ENGINEER................................................... 16 3.2 RESPONSIBILITIES AND DUTIES ON SHORT DURATION TESTS ................... 17 3.2.1 COMPANY DRILLING AND COMPLETION SUPERVISOR................. 17 3.2.2 COMPANY JUNIOR DRILLING AND COMPLETION SUPERVISOR............................................................ ........................... 17 3.2.3 COMPANY WELL SITE GEOLOGIST .................................................. 17 3.2.4 CONTRACTOR PERSONNEL............................................................. . 17 4. WELL TESTING PROGRAMME ...................................................................... ................ 18 4.1 CONTENTS.............................................................. ............................................. 18 5. SAFETY BARRIERS.............................................................. .......................................... 19 5.1 WELL TEST FLUID................................................................. .............................. 19 5.2 MECHANICAL BARRIERS - ANNULUS SIDE ..................................................... 20 5.2.1 SSTT ARRANGEMENT ...................................................................... .. 20 5.2.2 SAFETY VALVE ARRANGEMENT....................................................... 22 5.3 MECHANICAL BARRIERS - PRODUCTION SIDE............................................... 23 5.3.1 TESTER VALVE ...................................................................... ............. 23 5.3.2 TUBING RETRIEVABLE SAFETY VALVE (TRSV) OR (SSSV) ........... 24 5.3.3 CASING OVERPRESSURE VALVE ..................................................... 24 6. TEST STRING EQUIPMENT............................................................. ............................... 25 6.1 GENERAL............................................................... .............................................. 25 6.2 COMMON TEST TOOLS DESCRIPTION ............................................................. 30 6.2.1 BEVELLED MULE SHOE ..................................................................... 30 6.2.2 PERFORATED JOINT/PORTED SUB .................................................. 30 6.2.3 GAUGE CASE (BUNDLE CARRIER) ................................................... 30 6.2.4 PIPE TESTER VALVE ...................................................................... .... 30 6.2.5 RETRIEVABLE TEST PACKER ........................................................... 30 6.2.6 CIRCULATING VALVE (BYPASS VALVE) .......................................... 30 6.2.7 SAFETY JOINT................................................................. .................... 31 6.2.8 HYDRAULIC JAR ...................................................................... ........... 31 6.2.9 DOWNHOLE TESTER VALVE ............................................................. 31 6.2.10 SINGLE OPERATION REVERSING SUB............................................. 31 6.2.11 MULTIPLE OPERATION CIRCULATING VALVE ................................ 31 6.2.12 DRILL COLLAR................................................................ .................... 31 6.2.13 SLIP JOINT................................................................. .......................... 32 6.2.14 CROSSOVERS ...................................................................... ............... 32 6.3 HIGH PRESSURE WELLS ...................................................................... ............. 32 6.4 SUB-SEA TEST TOOLS USED ON SEMI-SUBMERSIBLES............................... 32 6.4.1 SUB-SEA TEST TREE.................................................................. ........ 32 6.4.2 FLUTED HANGER................................................................ ................ 33 6.4.3 SLICK JOINT (POLISHED JOINT) ....................................................... 33 6.4.4 SSTT VALVE ASSEMBLY.............................................................. ...... 34 6.4.5 LATCH ASSEMBLY.............................................................. ................ 34 6.4.6 BLEED OFF VALVE AND RETAINER VALVE..................................... 34 6.5 FISHING TOOL.................................................................. ................................... 35 6.6 LUBRICATOR VALVE................................................................. ......................... 35 6.7 TOOLS FOR DYNAMIC POSITIONING RIG......................................................... 36 6.7.1 SHEAR JOINT ...................................................................... ................ 36 6.7.2 ELECTRO-HYDRAULIC CONTROL SYSTEM ..................................... 36 6.7.3 REAL-TIME SURFACE READ-OUT OF SUB SEA PRESSURE AND TEMPERATURE........................................................... ................ 37 7. SURFACE EQUIPMENT ...................................................................... ............................ 38 7.1 TEST PACKAGE ...................................................................... ............................ 38 7.1.1 FLOWHEAD OR SURFACE TEST TREE............................................. 38 7.1.2 FLEXIBLE FLOW LINES AND PIPING................................................. 38 7.1.3 DATA/INJECTION HEADER................................................................ . 39 7.1.4 CHOKE MANIFOLD.............................................................. ................ 39 7.1.5 STEAM GENERATOR AND HEAT EXCHANGER / INDIRECT HEATER................................................................ ................................ 40 7.1.6 SEPARATOR............................................................. ........................... 41 7.1.7 DATA ACQUISITION SYSTEM............................................................. 43 7.1.8 GAUGE/SURGE TANKS ...................................................................... 43 7.1.9 TRANSFER PUMP.................................................................. .............. 44 7.1.10 DIVERTER MANIFOLDS ...................................................................... 44 7.1.11 BURNERS............................................................... .............................. 44 7.1.12 BOOMS................................................................. ................................ 45 7.1.13 GAS TORCHES ...................................................................... .............. 45 7.1.14 STORAGE TANKS FOR LIGHT AND HEAVY OIL............................... 45 7.1.15 TANKER TRUCK CHARGING SYSTEM .............................................. 46 7.2 EMERGENCY SHUT DOWN SYSTEM................................................................ . 50 7.3 ACCESSORY EQUIPMENT............................................................. ..................... 50 7.3.1 CHEMICAL INJECTION PUMP ............................................................ 50 7.3.2 SAND DETECTORS ...................................................................... ....... 50 7.3.3 CROSSOVERS ...................................................................... ............... 51 7.4 RIG EQUIPMENT............................................................. ..................................... 51 7.5 DATA GATHERING INSTRUMENTATION....................................................... .... 51 7.5.1 OFFSHORE LABORATORY AND INSTRUMENT MANIFOLD EQUIPMENT............................................................. ............................ 51 7.5.2 SEPARATOR............................................................. ........................... 52 7.5.3 SURGE OR METERING TANK............................................................. 52 7.5.4 STEAM HEATER ...................................................................... ............ 52 8. BOTTOM HOLE DATA ACQUISITION ...................................................................... ...... 53 8.1 EQUIPMENT DESCRIPTION........................................................... ..................... 53 8.1.1 WIRELINE UNIT.................................................................. .................. 53 8.1.2 ADAPTER FLANGE................................................................ .............. 53 8.1.3 BOP ...................................................................... ................................ 53 8.1.4 TOOL TRAP.................................................................. ........................ 53 8.1.5 LUBRICATOR RISERS................................................................ ......... 54 8.1.6 FLOW TUBE TYPE STUFFING BOX.................................................... 54 8.1.7 SAFETY CHECK VALVE................................................................. ..... 54 8.1.8 INJECTION NIPPLE ...................................................................... ....... 54 8.1.9 TOOL CATCHER............................................................... ................... 55 8.1.10 DOWN HOLE PRESSURE AND TEMPERATURE GAUGES............... 55 8.1.10.1 GAUGE TYPES................................................................. .. 55 8.1.10.2 GAUGE INSTALLATION..................................................... 56 8.1.11 PRODUCTION LOGGING TOOL.......................................................... 58 8.1.12 DOWN HOLE SAMPLING TOOL.......................................................... 58 9. PERFORATING SYSTEMS............................................................... ............................... 59 9.1 TUBING CONVEYED PERFORATING........................................................... ...... 59 9.2 WIRELINE CONVEYED PERFORATING ............................................................. 59 9.3 PROCEDURES FOR PERFORATING........................................................... ....... 59 10. PREPARING THE WELL FOR TESTING............................................................... .......... 61 10.1 PREPARATORY OPERATIONS FOR TESTING.................................................. 61 10.1.1 GUIDELINES FOR TESTING 7INS LINER LAP ................................... 61 10.1.2 GUIDELINES FOR TESTING 95/8INS LINER LAP................................ 61 10.1.3 GENERAL TECHNICAL PREPARATIONS .......................................... 61 10.2 BRINE PREPARATION ...................................................................... .................. 62 10.2.1 ONSHORE PREPARATION OF BRINE................................................ 62 10.2.2 TRANSPORTATION AND TRANSFER OF FLUIDS............................. 62 10.2.3 RECOMMENDATIONS ...................................................................... ... 62 10.2.4 RIG SITE PREPARATIONS.......................................................... ........ 63 10.2.5 WELL AND SURFACE SYSTEM DISPLACEMENT TO BRINE ........... 64 10.2.6 DISPLACEMENT PROCEDURE........................................................... 65 10.2.7 ON-LOCATION FILTRATION AND MAINTENANCE OF BRINE.......... 65 10.3 DOWNHOLE EQUIPMENT PREPARATION ........................................................ 66 10.3.1 TEST TOOLS................................................................. ....................... 66 10.4 TUBING PREPARATION........................................................... ........................... 66 10.4.1 TUBING CONNECTIONS ..................................................................... 66 10.4.2 TUBING GRADE................................................................. .................. 67 10.4.3 MATERIAL.............................................................. .............................. 67 10.4.4 WEIGHT PER FOOT.................................................................. ........... 67 10.4.5 DRIFT................................................................. ................................... 68 10.4.6 CAPACITY.............................................................. .............................. 68 10.4.7 DISPLACEMENT ...................................................................... ............ 68 10.4.8 TORQUE................................................................ ............................... 68 10.4.9 INSPECTION ...................................................................... .................. 68 10.4.10 TUBING MOVEMENT ...................................................................... ..... 69 10.5 LANDING STRING SPACE-OUT................................................................... ....... 70 10.5.1 LANDING STRING SPACE-OUT PROCEDURE .................................. 73 10.6 GENERAL WELL TEST PREPARATION........................................................... .. 73 10.6.1 CREW ARRIVAL ON LOCATION......................................................... 73 10.6.2 INVENTORY OF EQUIPMENT ONSITE................................................ 73 10.6.3 PRELIMINARY INSPECTIONS........................................................... .. 74 10.7 PRE TEST EQUIPMENT CHECKS................................................................ ....... 75 10.8 PRESSURE TESTING EQUIPMENT .................................................................... 76 10.8.1 SURFACE TEST TREE.................................................................. ....... 77 11. TEST STRING INSTALLATION ...................................................................... ................. 80 11.1 GENERAL............................................................... .............................................. 80 11.2 TUBING HANDLING.............................................................. ............................... 81 11.3 RUNNING AND PULLING ...................................................................... .............. 81 11.4 PACKER AND TEST STRING RUNNING PROCEDURE ..................................... 82 11.5 RUNNING THE TEST STRING WITH A RETRIEVABLE PACKER...................... 82 11.6 RUNNING A TEST STRING WITH A PERMANENT PACKER............................. 83 12. WELL TEST PROCEDURES ...................................................................... ..................... 85 12.1 ANNULUS CONTROL AND PRESSURE MONITORING ..................................... 85 12.2 TEST EXECUTION ...................................................................... ......................... 85 13. WELL TEST DATA REQUIREMENTS ...................................................................... ....... 87 13.1 PRE-TEST PREPARATION........................................................... ....................... 87 13.2 METERING REQUIREMENTS.......................................................... .................... 87 13.3 DATA REPORTING............................................................. ................................. 88 13.4 WELL TEST DATA ACQUSITION PROCEDURE................................................. 89 14. SAMPLING.............................................................. ......................................................... 90 14.1 CONDITIONING THE WELL.................................................................. ............... 90 14.2 DOWNHOLE SAMPLING ...................................................................... ............... 90 14.3 SURFACE SAMPLING ...................................................................... ................... 91 14.3.1 GENERAL............................................................... .............................. 91 14.3.2 SAMPLE QUANTITIES............................................................ ............. 92 14.3.3 SAMPLING POINTS ...................................................................... ....... 92 14.3.4 SURFACE GAS SAMPLING.............................................................. ... 93 14.4 SURFACE OIL SAMPLING ...................................................................... ............ 94 14.5 SAMPLE TRANSFER AND HANDLING.............................................................. . 95 14.6 SAFETY................................................................ ................................................ 96 14.6.1 BOTTOM-HOLE SAMPLING PREPARATIONS ................................... 96 14.6.2 RIGGING UP SAMPLERS TO WIRELINE ............................................ 97 14.6.3 RIGGING DOWN SAMPLERS FROM WIRELINE ................................ 97 14.6.4 BOTTOMHOLE SAMPLE TRANSFER AND VALIDATIONS................ 97 14.6.5 SEPARATOR/WELLHEAD SAMPLING ............................................... 98 14.6.6 SAMPLE STORAGE............................................................... .............. 98 15. WIRELINE OPERATIONS............................................................ .................................... 99 16. HYDRATE PREVENTION ...................................................................... .......................... 100 17. NITROGEN OPERATIONS ...................................................................... ........................ 101 18. COILED TUBING OPERATIONS ...................................................................... ............... 102 19. WELL KILLING ABANDONMENT ...................................................................... ............. 103 19.1 WELL KILLING............................................................... ...................................... 103 19.2 WELL KILLING ABANDONMENT........................................................... ............. 103 20. HANDLING OF HEAVYWATER BRINE................................................................. .......... 104 APPENDIX A - REPORT FORMS ...................................................................... ....................... 105 A.1. DAILY REPORT (ARPO 02) ...................................................................... ........... 105 A.2. WELL TEST REPORT “GENERAL DATA” (ARPO 10/A).................................... 106 A.3. WELL TEST REPORT “DST DATA” (ARPO 10/B) .............................................. 107 A.4. WELL TEST REPORT “RECORD DATA” (ARPO 10/C)...................................... 108 A.5. WASTE REPORT (ARPO 6) ...................................................................... ........... 109 A.6. WELL PROBLEM REPORT (ARPO 13) ............................................................... 110 A.7. MALFUNCTION & FAILURE REPORT (FB-1) ..................................................... 111 A.8. CONTRACTOR EVALUATION (FB-2).................................................................. 112 APPENDIX B – ABBREVIATIONS......................................................... ................................... 113 APPENDIX C – BIBLIOGRAPHY.......................................................... .................................... 115

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