FIELD DEVELOPMENT REPORT PROJECT OF DRILLING DEPT

Drilling Department

Presented By: Muhammad Noman Khan s/o Muhammad Hanif Khan

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Presentation Synopsis

1. Pressure and fracture gradient determination

2. Calculation and selection of casing type (Proposed casing

programmed)

3. Cementing Plan

4. Mud Plan

5. Bit Plan

6. Well Head Housing

7. Rig selection

8. Drill time estimation2

Casing Setting Depth Selection & Fracture Gradient Determination

• Formation pressure

• Depth

• Method used to determine fracture gradient : Eaton’s Method

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For S/D and Poissons ratio

Conductor Casing Design

0

200

400

600

800

1000

1200

0 500 1000 1500 2000 2500 3000

Dep

th (

ft)

Pressure (psi)

Burst Design

Load Line

Back up Line (psi)

Resultant Line (psi)

Design Line (psi)

#H-40

0

100

200

300

400

500

600

0 500 1000 1500 2000 2500 3000

Dep

th(f

t)

Pressure (psi)

CollapseDesign

Load Line

Resultant Line (psi)

Design Line (psi)

#H-40

Casing Selection

#H-40

Round Thread (short)1530

Collapse Resistance (psi)520

Weight (lb/ft)94

ID (inch)18.936

0

100

200

300

400

500

600

700

800

900

1000

-100 0 100 200 300 400 500 600 700 800 900 1000

Dep

th (

ft)

pressure (psi)Tension Design

Tensional Design

Design line

Casing Selection

Surface Casing Design

Intermediate Casing Design

Type of

Casing

Casing Size,

in

Casing

Grade

Conductor 20 H40

Surface 13 3/8 J-55(I,II)

Intermédiate 9 5/8 H40(I,II)

Casing Program – Summary

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Deviation well Design (2 & 3)

Lz

Lx

0

1000

2000

3000

4000

5000

6000

7000

-500 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000

WELL 2

0

1000

2000

3000

4000

5000

6000

7000

-1000 0 1000 2000 3000 4000 5000 6000 7000

Axi

s Ti

tle

Axis Title

WELL 3

Mud Planning

Seawater Native

- Seawater + Clay (Formation)

- Using Pre hydrated bentonite to aid in hole cleaning- Dump and dilute method to control mud weight and soildcontents

Hole Size, in CasingSize

Mud Weight,

ppg

Total Amount,bbl

26’’ 20 9.06 328.3

17 ½’’ 13 5/8’’ 9.06 995.68

12 ½” 9 5/8” 9.06 1022.726bbl

Mud Plan

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And Production Hole Required 1047.293bbl

Cement Classification

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Cement Classification

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

Tune Lite Mixing & Cement Head

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Hole Size, in Bit Type Bit Size, in

20Mill Tooth, Hole

Opener26

13 3/8 Tricone Roller 17 1/2

9 5/8 TD506 PDC 12 1/4

Bit Planning

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Bit Planning

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Bit Planning

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Well Head Housing

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JACKUP RIG

Rigs

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BOP SELECTION

Drilling Time Estimation

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Operations Time estimate, days Depth (TVD), ft

Move rig floor to slot 0.5 0

Drill 26" hole 1.5 1000

Run 20" conductor casing 1.5 1000

run cement to sea bed 1 1000

Drill 17.5" hole 2.5 3100

Run 13.375" surface casing 2.5 3100

run cement to sea bed 1 3100

Run & Test BOP 1.5 3100

Drill 10.75" hole 4.5 6050

Log 10.75" hole 2 6050

Run 8.625" production Completion 4.5 6050

Run Cement 2 6050

well1 well2 well3

Lower

Section

13 3/8” 13 3/8” 13 3/8”

9 5/8” 9 5/8” 9 5/8”

Estimated

Time

(Days)

25 25 25

Total Time to Complete Top Section for all Wells – 75 days

25 days including Rig move and prepare to drill and Running BOP

Drilling Time Estimation

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• Pipe Sticking

• Differential-Pressure Pipe Sticking

• Mechanical Pipe Sticking

• Loss of Circulation

• Drillpipe Failures

• Twistoff

• Fatigue

• Pipe-Failure Prevention

• Hydrogen-Sulfide-Bearing Zones and Shallow Gas

• Since we don’t 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 Challenge

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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.

Safety

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