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Drilling DepartmentPresented By: Muhammad Noman Khan s/o Muhammad Hanif Khan

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Presentation SynopsisPressure and fracture gradient determinationCalculation and selection of casing type (Proposed casing programmed)Cementing PlanMud PlanBit PlanWell Head HousingRig selectionDrill time estimation

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1. Type of completion for production well2. Well completion equipment3. Packer Selection4. Wellhead and Christmas Tree5. Perforation6. Completion and Packer Fluid7. Summary

Completion Goal4

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Formation & Fracture PressurePressure gradientFormation pressureOverburden0.442 psi/ ft1 psi/ ft

Formation pressureDepthMethod used to determine fracture gradient : Eatons Method

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Type of CasingCasing Size, inCasing GradeCasing Weight, lb/ftOD, inID, inBody Yield Strength, lbConductor30X-5231030281685000Surface20J-55942019.1241480000Production9 5/8N-80409 5/88.535800000

Casing Program Producer Well6

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Type of CasingCasing Size, inCasing GradeCasing Weight, lb/ftOD, inID, inBody Yield Strength, lbConductor30X-5231030281685000Surface20J-55942019.1241480000Production9 5/8N-80409 5/88.535800000

Casing Program Injector Well7

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Hole Size, inCasing SizeMud TypeMud Weight, ppgTotal Amount, bbl3630Seawater, Sweep/Pad mud9.58502620Seawater, Sweep/Pad mud10140012 9 5/8KCL Polymer Mud12665

Mud Plan8

A Polymer drilling fluids provide inhibition against reactive formations by providing viscosity, without the need for bentonite, when using inhibitors such as Potassium Chloride, glycols and amines. Bentonite will not yield in the presence of the inhibition agents. Potassium Chloride is also very important for maintaining permeability after filtrate invasion.

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Cement Classification

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Cement Classification

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Hole SizeCasing Size Total VolumeCu.Ft In BBLTotal Sk of Cement 36301033.47 ft3 184 bbl675 skAdditives ( To be mixed with Mixed Water)Water Req Slurry Yield Required 4% Bentonite7.6 gal/sk 1.53 ft3/ sk2540 lbsDefoamer ( D Air 3000L)0.05 gal/sk34 galDispersant (CFR 3L)0.07 gal/sk47 gal

Cement Plan for 3011

Hole SizeCasing Size Total VolumeCu.Ft In BBLTotal Sk of Cement 2620965 ft3 406 BBL934 skWater Req Slurry Yield Mix WaterTune Lite Cement7.4 gal/sk 2.440 ft3/sk8.31 gal/skAnti Gas Migration (GasStop Exp)0.06 gal/sk56 galDefoamer ( D Air 3000L)0.05 gal/sk34 galDispersant (CFR 3L)0.07 gal/sk47 galCement Retarder (SCR 500L)0.25 gal/sk 235 galFluid Loss Additive (Halad-413L) 0.20 gal/sk 185 gal

Cement Plan for 20 Lead12

Hole SizeCasing Size Total VolumeCu.Ft In BBLTotal Sk of Cement 26202280 ft3 172 BBL840 skWater Req Slurry Yield Mix WaterG Neat Cement4.91 gal/sk1.150 ft3/sk5.01 gal/skDefoamer ( D Air 3000L)0.1 gal/sk84 gal

Cement Plan for 20 Tail13

Hole SizeCasing Size Total VolumeCu.Ft In BBLTotal Sk of Cement 12 1/29 5/81011 ft3 140 BBL415 skWater Req Slurry Yield Mix WaterTune Lite Cement7.4 gal/sk 2.440 ft3/sk8.31 gal/skAnti Gas Migration (GasStop Exp)0.13 gal/sk 55 gal.Defoamer ( D Air 3000L)0.1 gal/sk. 45 gal.Dispersant (CFR 3L)0.09 gal/sk. 40 gal. Cement Retarder (SCR 500L)0.40 gal/sk 166 galFluid Loss Additive (Halad-413L) 0.30 gal/sk 125 gal

Cement Plan for 9 5/8 Lead14

Hole SizeCasing Size Total VolumeCu.Ft In BBLTotal Sk of Cement 12 1/29 5/8225 ft3 40 BBL196 sk.Water Req Slurry Yield Mix WaterG Neat Cement4.91 gal/sk 1.150 ft3/sk5.01 gal/skDefoamer ( D Air 3000L)0.1 gal/sk20 gal

Cement Plan for 9 5/8 Tail15

Volumetric mixing controls. Q1 = mixwater rate; Q2 = dry solids rate; Q3 = slurry rate

Tune Lite Mixing & Cement Head16

Hole Size, inBit TypeBit Size, in36Mill Tooth, Hole Opener3626Tricone Roller2612 TD506 PDC12

Bit Planning17

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Bit Planning18

Bit Planning

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Well Head Housing20

Drillship Aban Ice Semi Submersible Blackford Dolphin

Rigs21

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B1B2B3B4B5B6B7B8B9Top Section303030303030303030202020202020202020Estimated Time (Days)131313131313131313Total Time to Complete Top Section for all Wells 117 days

13 days including Rig move and prepare to drillDe-hire Drillship after completion of Top Sections

Drilling Time Estimation22

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B1B2B3B4B5B6B7B8B9Lower Section13 3/813 3/813 3/813 3/813 3/813 3/813 3/813 3/813 3/89 5/89 5/89 5/89 5/89 5/89 5/89 5/89 5/89 5/8Estimated Time (Days)252525252525252525Total Time to Complete Top Section for all Wells 225 days

25 days including Rig move and prepare to drill and Running BOPDe-hire Semi Sub after completion of Lower Sections

Drilling Time Estimation23

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Pipe StickingDifferential-Pressure Pipe StickingMechanical Pipe StickingLoss of CirculationDrillpipe FailuresTwistoffFatiguePipe-Failure PreventionHydrogen-Sulfide-Bearing Zones and Shallow GasSince we dont have log data, we very much depend on the real time drilling operations, Hence we have to be very careful about gas kick or loss.Drilling Challenge24

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Fire-fighting equipment must be available for emergency use in the event of a fire and should be provided in first-class working order.Unauthorized person should not be allowed to be on the rig at any time.Personnel who not involved directly in the particular operation should keep away from operation site.Sea survival and offshore course is compulsory for all personnel.Safety25

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