Transcript StimGun Kodiak Enhanced Perforating

2010 International Perforating
Symposium
Presentation IPS-10-011
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StimGun
KODIAK Enhanced Perforating System
Initial Concept
Technical Challenges
Progress
HTH Technical Services, Inc.
Joe Haney
Owen Oil Tools (CoreLab)
Dan Pratt, Chris Montanez, Mike Miller
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The Beginning

1992 – David Cuthill and Bob Haney
Combine perforating with propellant stimulation
 Surface Test - propellant inside gun
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2007 – HTH and Owen
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Problem with propellant
Start development of a new type of propellant
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INITIAL CONCEPT
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
Quick and Simple Perforation Breakdown
KODIAK Enhanced Perforating System PELLET
PERFORATING CHARGES
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Why?

Initially, the thought was to enhance the
perforating process when you can’t run the
StimGun Assembly™
Wells with minimal fluid column (< 500 ft)
 Wells with complex or difficult casing or tubing
configurations
 Very short intervals
 Limited Entry
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Enhanced Perforating?

Change in focus - from charge penetration to
flow
 Formation breakdown
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Quick and Simple Perforation Breakdown
TECHNICAL CHALLENGES
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
Propellant
Rapid, but controlled, burn rate
 Reduced sensitivity of burn rate to pressure
 Extremely low sensitively to shock, friction, impact,
and static electricity

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
Gun Integrity
For standard and non-standard operating
conditions – zero potential for failure needed
 Gun expansion – within set limits
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
Adequate Rate of Venting of Gases
We need a high pressure pulse in the perforation
tunnel
 We have to go through two “chokes”
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Both the perforation exit hole in the gun and the in the
casing are of critical importance
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Propellant Development
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Five different propellant / energetic materials
selected for evaluation
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Testing, Testing, Testing
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Testing, Testing, Testing
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Surface Tests
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Internal Gun Pressure Data
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Gun Integrity
All systems “dry” tested
 All systems “fluid” rated
 Over 100 tests
 No problems
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Venting
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Multiple new charge and scallop designs
evaluated
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PRODUCT DEVELOPMENT
REVIEW
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
Propellant
Requires high order detonation to fully ignite
 Requires minimum charge gram weight to disk
thickness to fully ignite
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Gun Integrity
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No problems – for the “system”
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
Venting
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The current system with specially designed
charges, it is adequate
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Final Design Configuration
Venting Capacity
Burst Pressure of Gun
Balance Between
Burn Rate
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Propellant Volume
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KODIAK Enhanced Perforating System
Surface Test
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Quick and Simple Perforation Breakdown
PROGRESS
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Downhole Testing
Wyoming
 Montana
 Texas
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MOC Gov’t 4
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Does Kodiak work?
Yes
Rapid rise time
High Pressure
5 ms pulse
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Montana Tests
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6’ x 3 3/8” x 4 spf x 60 deg guns
Shallow gas
5½” casing
1700’ depth
50’ to 200’ tamp fluid
Four runs (2 wells)
No operational problems
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Gun expansion OK
No wireline damage
No packer problems (all zones – packer was close)
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Texas
TCP – vertical well
 11’ x 3 3/8” x 4spf
 Corkscrewed 120’ used J-55 tubing, the 60’ of
new N-80 above gun was fine
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Lesson learned
On to Commercial Testing
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KODIAK Enhanced Perforating System
– First Commercial Tests
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Successes
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Shallow gas wells
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KODIAK Enhanced Perforating System
– First Commercial Tests
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Problems
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Inadequate venting rate at depth
Flaw in the Initial Concept
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Flaw in the Initial Concept

Simple operation to breakdown perforations
Not that simple
 You need energy (a lot of energy) to breakdown
perforations
 With a lot of energy, you can have problems with
wireline, tubing, plugs and packers
 Different formations have different energy
requirements
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Back to Testing
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Montana Testing
Improved Venting
Reduced Propellant Load
Series One
10000
9000
7000
Kodiak Aug 14 2009
montrun1 &2.owr
3 1/8 in 4 spf
1690-1696 ft, 200 ft methanol/KCl
6000
4512.grf
5000
- run 1 Kodiak II charges no disks
- run 2 60% load
Presure - psi
8000
4000
3000
2000
1000
0
0
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0.025
0.05
0.075
0.1
0.125
0.15
Time - seconds
0.175
0.2
0.225
0.25
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Series Two
10000
9000
Kodiak Aug 18 2009
mont2run 1- 4.owr
3 1/8 in, 3 ft, 4 spf, ~2770 ft
160 ft methanol, PBTD 10-25 ft
4517.grf
8000
Presure - psi
7000
6000
- run 1 Kodiak II charges no disks
- run 2 55% load
- run 3 64% load
- run 4 73% load
5000
4000
3000
2000
1000
0
0
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0.01
0.02
0.03
0.04
0.05
0.06
Time - seconds
0.07
0.08
0.09
0.1
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Lesson Learned - Operations
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We have determined that simply reducing
propellant load to 85% and setting some fairly
basic procedural guidelines - eliminates a
majority of the potential operational issues
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Product Applications
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Current

Enhanced Perforating / Perforation Breakdown
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Shallow wells (<5000’)
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Near - Future

Propellant Stimulation / Perforation Breakdown
Moderate depth wells (<10,000’)
 Limited Entry
 Horizontal wells
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PATH FORWARD
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We are excited about potential of the
technology
 It work’s (although it is not quick and simple)
 There are several commercial applications that
we are now focusing on
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IN CONCLUSION
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KODIAK
Has tremendous potential to improve the perforating
process
Fits well into the StimGun family of products
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QUESTIONS?
COMMENTS?
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