Download to read offline
CV KEREN INDONESIA DLWANDLKAWNDLKAWNDLADMSNDSO
- 1. Chapter 1 bearsover all e.g responsibility for Operator oil company drilling operation engage to locate area of Geologist interest I hire If drilling consultant hire landman to acquire hire drilling rights contractors to do the actual 1 drilling maintain rigs equipments contract Day rate type contractor provides rigs personnel Turnkey contractor to provide Well design rigs personnel consumables
- 2. Drilling Process i Budgeting ii Planningiii Design well specs tf obj Construct well plan Well Team completed data acquisition x Goals HFE budget cost worksheet Geological Submitted Prognosis rig scheduling Well plan Well obj approved finalized n approved ggg Execution Optimization Spud well Drilling program ost Drill Analysis completed Complete Drilling program Test PbA applied Handover to Prod pre Spud meeting Steps in drilling OIG obtain seismicLog obtain concession calculate reserve 4 if high proceedwith obtain permitfrom Gov We preparedrilling completion program ask for bidsfromdrillingcontractors on i Footage Day work if required modifydrilling programme construct roads location1 platformsfor access conduct prespud meeting further modification if necessary drillwell
- 3. Types of wells iexploration well ii appraisal well wildcat well to test drilled during initial economic Phase of exploration viability commerciability to determine presence conducted through various of H C obtain Gnq well test through combustion datds of oil from oil produced production potential fluid samples N Development Well Prod Well L drilled in proved production field area to extract HC iv Abandonment well Lif no HE is found 0 wells need to be closed I to avoid env impact during explappraisal V Re entry recompletion for sidetracking deepening
- 4. Driving Vertical for drillingstraight down for shallow Techniques common during early days land Horizontal drilling horizontally to reach target 2 one drill to penetrate reservoir at a shallow angle F 7 or Vertical Horizontal to expose more of low permeability reservoir to the wellbore Well well ex Frac Directional process of directing wellbore along a trajectory to a predetermined target implement on off shore fixer dg platform Application major surface obstruction re use of old wells to explore new oil relief well to control blow out
- 5. Drilling Operations Personnel 45 companyrepresentative yd Senior on rig nyman Operating a drilling Icompa ensure drilling company roles operation is run Supervisor as planned background ie intenetrents ign.gl 5 10years DrillingExp An To conduct preliminary studies estimate well duration cost DrillingEng during initial prospect evaluation me no Authority for Expenditure FEs are approved To design coordinate b monitor overall well program 0 managing rig side people Why they must work with Geologist develop understanding of drilling Geology 0 identify anomalies during operations Estimate expected Ppore 4 fracture gradient Selecting casing sizes 4setting depths 0 Develop drilling mud program o Prepare drilling OP
- 6. Drilling main personnel Contractor lSenior Tool Pusher Rig Manager 0 coordinates drilling Toolpusher contractor's function other inrighffidaeseotwith on riot sagging key company man 0 main contact with ersonnels supervisor 0 a Drilling crew 0 Subsea Engineer Engineering crew 0 Medics Marine crew 0 Radio Operator Driller operate Pumps draw works via driller Drilling rotary table console Crew Derrickman work 90ft above rig floor on derrick handle sections of drill pipe Pumpman assist devickman f responsible for maintenance 1 smooth Roug neck operation of mud pump low ranking member of drilling crew works on rig floor I Macintewnancelottnegidnfefnance controlacYiginiteensance scheduling In charge of all maintenance operations on the rigs Rig Electrician maintenance 1 repairs electrical equipment RigMechanic maimntennaan.EE earueipanirenIt Motorman maintenance
- 7. todrilldev well ganchovis Used from1 locationto fix position immobile towedlselfpropelled Gps L Tf e se of pontoons to control G 12ft 2400ft I buoyancye 245009 710,000 79000ft Classifications power jelectric grid used pneumatic of rigs mechanical diesel hydraulic Pipe used conventional cable CoitTubing Height single double triple Pipe rack quad Rotary system no rotation Position rotary table of top drive derrick conventional slant
- 8. Drilling Process iPower Gen System Subsystem Hoisting System 111 Circulating System iv Rotary system v Well control system vi Data acquisition by monitoring system Rig Components is Derrick provide vertical height rea for raisingtowering drill string o Travelling crownblock drilling line Block Tackle Travellingblock T control centre from which Drawworks driver operates the rig provide hoisting 1 braking power req to raiseflower heavystrings of the pipe drum ofthedraw works is connected to the electric motorisgearing system
- 9. Drilling Process Subsystem Hoisting System Tolower raise drillstrings casing string other sS equipments out of hole crown block fit Draw work wire g Fd Wtf tf y line g anch0 travelling WL TEN µ hook storagereel Tensile Load Ff WIEN Ff Ft Why The tensile load will be W total load a function oftheinefficiency supported by lines lbs N no of lines Drilling Terms making connection i Periodic process of adding newjoints of drillpipe to the drill string making trip taking the drill string out of hole to change bitlatter BHA lowering them backinto the hole Steps raise Kelly above rotary table set slips
- 10. Rig Power System Transmittedvia Y mechdrivers ACDC rectifier Major components in cnn.im i imi Avg Total arotarytable Prime power 1000 3000hp from electric Movers Internal combustion or power supply diesel engines from existing power line Rotary Power To Vertical Hole Drilling they L Torque 15kA lbs t.ni.ec IneaiiIiITng T Input Power L Torque 80left lbs P QgH Power 100 hp 2545 Output Power PislnputPower hp Po ZANT Eff 11 1001 Qf Rateoffuel 53,000 pi consumption Clbs hr Pos OutputPower hp H heating value N EngineRotarySpeed rpm I OutputTorque ft lbs i StaticTension in fast line when upward motion is impending seflitfirnifsiunitable Max hook up hoisting speed derrick load Drilling Rigs µ actual derrick todd iv Derrick efficiency factor
- 11. example load 300lbNs 8 hp 500hp E O841 i Static Tension Line in Fastline when upward motion is impending Ffs Yg 381,900cg s 44,590lbf II Chak hook horsepower ill Max hoisting speed Ph E Pi O841 500 th Py W 4205h17 420.5 Xp153,000ft Im Thus time req to pull 90ft Stand is 300,00 rebff t 90ft t.tt mih I9 min 46.3flymin The actual derrick load is givenby Fds l tfµtEN W I tagYµtcffHC8 1300,000 382,890 lbf Max eq load Fde Nµt4 w 8g4 zoo ooo 450,000lbf Derrick eff factor Ed Fff 382,0 90 0.849 84.9 1 480,000
- 12. Rotating Swivel supportweight of drill string System is permits rotation Kelly Square hexagonal shaped for easy gripping Torque is transmitted through Kelly bushing flips used to prevent drillstring from falling RotaryDrive Provide power to turn rotary table Drillpipe specified by a Outer Diameter c Steel grade b Weight Hoot d range length Drillcollar Thick walled heavy steel pipe used to apply the weight on bit wops 7 swivel rotary ke d 0 rotation of the drillstring is enabled vid table Kellybashing a hexagonal section of the pipe Kelly I T 1 which is 15M long located in p the rotary table I l y lecap o dP b D C r referred to as tubular in collar manually operated tongs u used to makeup b break out the drill strings drill bit
- 13. Drill Bit usuallybecomes dull after 5 25 hrs of operatio 48 Factors in i composition of formation drilling selecting hardness of formation parameters Cutting action is supported by powerful jets of drilling fluid which r discharged under high P through nozzles located at the side of the bit I f t a good drillbit should provides I longest working life lowest cost 1ft I of hole drilled FYI good 12PM drill t Rate of penetration CROP depends on bit ppm Hydraulic Eff Mud properties W O B Types i Roller cone features used in soft very hard formations bearings gauge protection Isoellafred Fain small large diameter journal conventional b extended types a ChilledTooth jet bits Selection based on formation hardness oIADC series 1 soft medium oIADC series 2 medium ha romeekchoauntitsing Gauging romeekchoauntitsing scraping oIADC series 5 hard Very hard rock cutting Chiselling mechanism
- 14. b Insert Drillbit available in 5 series no 4 8 for very hard formations romcekefauntitsinmg Chipping b crushing ii PDC polycrystalline Diamond compact gives better R.o.plfitted with diamonds longer life suitability for drilling at high RPM DrillString I Kelly hexagonal Aquare Components 40ft 154ft in length attached to a swivel fits into a matching slot in therotarytable I Function to transmit rotation 4 weight drill to the drillbit pipe sina.e.s.e.m.ie me iiiring hollow to allow fluids transmitting lines to pass through 27ft a30ft pipe D Drillcollar Thick wall heavy length of pipe keep drillstring in tension Stabilizer hold increase 1decrease hole angle stabilize
- 15. g Mud Circulating mudis continuously circulated down the System drillstring out through the nozzle in the bit back to the surface through the annulus application Clean rock cuttings in the borehole exert Phyd which prevents formation fluid fromentering the borehole ensure stability of hole form mud cake cool the bit in some configuration helps move the motor to turn the bit rotary hose drillstring is turned at swivel the surface Pump 11T l 0 Which turn ShaleShaker o the bit IT annulus f if no 11 drilling niacin t.li niii i gfJ io n.m c Drill o n bit tothe µ 1 jet nozzle surface in the l typical Vol req 100bbl where bit 1 they r 60bbl removed normal Teethgrinds 7 718 in hole 8000ft rocks into fragments
- 16. mud pumps duplex reciprocating RDPUMP triplex Duplexpumps two liners Triplexpumps 3 liners forwaylgrtkbeagkward forward strokes No of cylinders dualacting single acting He 2Di Dr rod 4 Diameter ILD Ls Nc length pigtfanmeter ofstroke Actual Vol Va Vi Eu or Qa c Ev Pump rating Max delivery PqQ Hydraulic Power P Q Hhp PI 1714
- 17. further Well Control FunctionPreventa flow of formation flui System into wellbore during kick I by fbadonifponent shutting in well surface IBOP Il controlling removal of formation fluid pump mud with higher p tripping dp in p out of hole ftp.neyleanfeu employs a synthetic rubber ring that inflates during well shut off RamPreventers L pipe rams ftp.fneing OD of Close off Dp annular space between dplcasin Shear Rams Blind rams designed to cut Lused when no dP off the r inside the hole d p me t R