outline

OutlinePore Pressure and Fracture GradientDrilling FluidCasing DesignCement DesignDrilling BitEconomic Analysis

Area of Interest

Area of Interest

Area of Interest

Area of Interest

OGIP Surface Map

Porosity Surface Map

Porosity 3D View

Net Pay 3D View

Vertical Well Placement

Horizontal Well Placement

Future Production Estimate

Fracturing Well #1

Pore Pressure and Fracture Gradient

Equation used Pff = 0.33 x [(σOB / d) + 2 x (σpore / d)]

Pore Pressure Gradient

Approximately 0.42 psi/ft

Fracture Gradient

Approximately 0.73 psi/ft

Casing DesignAPI GRADE Yield Strength Min Ultimate Strength Min Elongation J-55 40K (min) – 80K (max) [psi] 60K psi 29.5%[Table 7.1 from text]

Based off of the calculated yield strength: around 42,000 psi No need for larger ultimate strength Water Table between 500 – 2000 foot (From NE)

Conductor Casing: 50 feet Surface Casing: 2200 feet Intermediate Casing: 6000 feet Production Casing: 12000 feet

50

2200

6000

12000

Casing Design cont’d Casing Diameter Casing Pressure

Conductor 23.125 in 20 in 35 psi

Surface 19.2 in 14 in 1100 psi Intermediate 13.5 in 11.25 in

2460 psi Production 9.4 in 8.4 in 4850 psi

• SF = 1.7

Casing Design cont’d Casing Collapse Res.

Conductor 480 psi Surface 1875 psi Intermediate 5500 psi Production 10200 psi

MW = Pressure x (0.052 x TVD)

Drilling Fluid Casing Mud Weight

Conductor 13.4 ppg Surface 8.76 ppg Intermediate 7.58 ppg Production 6.16 ppg

MW = Pressure x (0.052 x TVD)

Cement DesignType: Class C High early strength properties which allows cement to be used at high water levels.Regularly used for shallow well cementing operations through salt beds.

Density of the cement = 11.53 ppg

Cement Design cont’dAc = ( dout

2 – din

2) / 1029.4 (bbl/ft)Volume = Ac (bbl/ft) * Depth (ft) Casing Cement Volume Conductor 6.5 bbl 36.498 ft3

Surface 368.9 bbl 2071.37 ft3

Intermediate 324.58 bbl 1822.52 ft3

Production 207.49 bbl 1165.07 ft3

Total cement Volume 907.47 bbl 5095.44 ft3

Drilling BitDrilling through shale and sandstone We will use Poly diamond crystal bit (because

they are faster and tend not to break as often as other bits)

Use multi pad drilling (Will use 75% less land)

DrillingHow many days to reach depth?It will take about 14 and half days to drill to the

pay zone with an average rate of penetration of 34.3 ft/hr

How much will it cost per day?rule-of-thumb for trip-time estimations is 1

hr/1,000 ft of a well.C= [(R=$1125)( (t=12 hrs) +(td=350hrs)+Cb

$25,000]/(F=12,000ft) = $36.02/ft$29,652.35How much will it cost total to drill?$432,331.27

Economical Analysis

Thank You!Any Questions?