ShaleTech 2011 Presentation

Integrating Measurements through the

Construction Cycle of Shale Wells

What happens when you assume the “frac will get it”

8 Month Cum vs # of Stages (Entire Play)8 Month Cum vs # of Stages (Core Area)8 Month Cum vs # of Stages (Bull Bayou Field)

2

Modeland, N., Buller, D. and Chong, K.K. 2011. Statistical Analysis of Completion Methodology on Production in the Haynesville Shale. Paper SPE 144120 presented at the SPE North American Unconventional Gas Conference and Exhibition, The Woodlands, Texas, 14-16 June

Old ProblemOld Solution

$0.30

$0.40

$0.50

$0.60

$0.70

$0.80

Fra

c F

ind

ing

Co

sts

, $/E

UR

mcf

Pre-Reservoir Description Usage

Average = $0.21 STD Dev = $0.18

Post-Reservoir Description Usage

Average = $0.10 STD Dev = $0.05

Fig. 10 - Frac Finding Costs for Project Wells

$-

$0.10

$0.20

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31

Well List

Fra

c F

ind

ing

Co

sts

, $/E

UR

mcf

SPE 39918 Schubarth et al. 1998

Drill an Evaluation Well

� Drilling: Efficient Wellbore Construction

� Logging: Characterize the Reservoir

� PE: Define the Target

Drill a Horizontal / High Angle Well

� Drilling: LWD Logging, Chemostratigraphy,

Geosteering, Real Time Reservoir Characterization

Complete the Well

� Optimize Zonal Isolation

� Instrument Completion String

Stimulate the Well

� Optimize each stage with appropriate stimulation

design

� Monitor Each Stage in real time

Monitor Results

� Instrumented Completion

� PLT logging

Shale Brittleness Index

Rickman et al. Paper SPE 115258

Brittleness Index vs Gas Production

Post Frac Production Log – day 45, well flowing 9MM

Buller, D., Suparman, F., Kwong, S., Spain, D. and Miller, M. 2010. A Novel Approach to Shale-Gas Evaluation Using a Cased-Hole Pulsed Neutron Tool. Presented at the SPWLA 51st Annual Logging Symposium held Perth, Australia, June 19-23

BP George A9H

Buller, D., Hughes, S., Market, J., Petre, E., Spain, D., and Odumosu, T. 2010. Petrophysical Evaluation for Enhancing Hydraulic Stimulation in Horizontal Shale Gas Wells.

Paper SPE 132990 presented at the SPE Annual Technical Conference and Exhibition held in Florence, Italy, 19–22 September.

BP CGU 13-17H

Prop

62.2%

Prop

85.3%

Prop 79% Prop 29.5% Prop

2.6%

Prop 89.5% Prop

100%

Prop

3%

Prop

55.4%

Prop 35%

XX XX

BP George A9H – 9 of 10 Water Fracs Placed – PL rate 8.2 MMCF/D

BP CGU 13-17H – 6 of 10 Fracs Placed > 50% – PL rate 4.5 MMCF/DBP CGU 13-17H – 6 of 10 Fracs Placed > 50% – PL rate 4.5 MMCF/D

Horizontal PNL CHI Model Shalelog – Haynesville Shale

Brittleness Index, Fracture Ease, Effective Porosity, Free Gas, & TOC

CHI Model Triple Combo Data CHI Model Triple Combo Data

Horizontal In & Out of Primary

Target Interval

Free Gas

Stress

Fracture

Ease

Brittleness Index

LithologyEffective

Porosity

CHI Model Triple Combo Data CHI Model Triple Combo Data

Buller, D., Suparman, FNU., Kwong, S., Spain, D., and Miller, M. 2010. A Novel Approach to Shale-Gas Evaluation Using a Cased-Hole Pulsed Neutron Tool. SPWLA Paper 87257 presented at the SPWLA 51st Annual Logging Symposium, Perth, Australia, 19-23 June.

Horizontal PNL CHI Model Shalelog – Haynesville

Shale

Evenly spaced stages Unevenly spaced stages

XX XX

Shale Completion Strategy: Based on

Formation Brittleness Index & Liquid Production

SPE 115258

ProppantProppant

ExtrudedShale

Shale Stimulation Strategy

19

Shale / Prop Interface

Summary and Conclusion • Shale reservoirs are statistical plays

� Current Practice has limitations

• Well placement strategy dictated by geomechanics

� Real Time Sonic

• Geosteering enhances production by maximizing

20

• Geosteering enhances production by maximizing fracable reservoir contact

• Data acquired while drilling has a long shelf life

� Data used in completion and stimulation optimization

Thank You

Спасибо

Gracias

Merci

谢谢你Grazie

TakkTakk

�ًا ���ً�

Sağol

ありがとう

Obrigado

Jason Pitcher

Global Wellbore Placement Solutions Champion

Halliburton Sperry Drilling