DB Case Study - Devon Energy

Oklahoma Shale Well Case StudyPerforation date January 2016

CASE STUDY

Reservoir input data

Gun OD 3 1/8”

Charge type DP2 HMX 22.7g

Formation type Shale

Stages 14

Phasing 180°

Gun swell value 3.25”

Cased hole 5 1/2”

Well bore fluid 8.33ppg

Temperature 170°F

Operation Frac

Location Oklahoma

Formation type Shale

Deployment Coiled tubing & Wireline

Date January 2016

Project overview

Devon Energy Case Study www.delphianballistics.com

Page 2Copyright © 2016 Delphian Ballistics Ltd

A representative of Delphian Ballistics was in attendance during the assembly process. UK Patent - GB2522494 US Patent - US9441438

Gun Outer Carrier

All shots exited through scalloped section of the gun

Manufacturing & Field Ops



Charge Tube Loading

Field deployment

• TriStim® used to perforate alternate stages of the well

• Direct comparison against conventional systems

Devon Energy Analysis concluded:

1. “Lower Treating Pressures for TriStim Stages“

2. “More success pumping 30/50 proppant“

3. “More success pumping the designed total proppant“

4. “Reduced screenouts using TriStim“



TriStim® stages treated easier than the conventional gun offset by 29%

Production Analysis: TriStim® vs Conventional Production data of a TriStim perforated well was reviewed against that of its closest neighbour (1.5 miles) perforated via conventional means.

• Early production was approx double that of the offset well

• Production rate differential is maintained

0

0

10

100

10000

1000

Gas

Rat

e, M

cf/d

Loga

rithm

ic sc

ale

TriStim Conventional

Days

50 150 250 350100 200 300 400

Channel extension

5139 Mcf/d

1967 Mcf/d

2072 Mcf/d

1050 Mcf/d



After 200 days the TriStim Perforated Well has produced 113% more than the conventionally perforated offset

Documents

DB Case Study - Devon Energy