This document provides an overview of well testing equipment and procedures used by Power Well Service Groups and Halliburton to evaluate oil and gas reservoirs. It begins by expressing appreciation for the companies providing well testing presentation materials. It then covers various types of well testing equipment like drill stem testing tools and surface testing packages. The remainder of the document discusses objectives and details of drill stem testing and describes components of typical open hole and cased hole drill stem testing systems. It also covers surface well testing facilities, data acquisition systems, reporting formats, and emergency shutdown systems.

1. By
R. Harry Eddyarso
PT. SARIPARI PERTIWI ABADI
“KMI Goes to Campus Program”
Komunitas Migas Indonesia – Universitas Trisakti
25 November 2006

2. WE DO APPRECIATE HALLIBURTON AND POWER
WELL SERVICE GROUPS FOR PROVIDING THE WELL
TESTING PRESENTATION MATERIALS FOR LESSON
LEARNED SHARING AND EDUCATIONAL PURPOSES
…….
STATEMENT of APPRECIATION

3. Finding The Reservoir : Seismic Survey
Making Access to The Reservoir : Drilling
Optimizing The Reservoir : Testing
Evaluating The Reservoir : Logging
Producing The Reservoir : Completion

4. SEISMIC ALONG WELL PATH
3D DATA

5. Depth Structure Map
Top B-29A2 Base B-29A2
c.i =25’

6. Types Of Well Testing Equipment
• DST
(Drill Stem Testing)
DST
Open Hole Cased Hole Barefoot
• STE (Surface
Testing Eqpt.)
STE
Exploration Clean Ups Production

7. Guide to Better Service and Correct
Sizing of Equipment
Guide to Better Service and Correct
Sizing of Equipment
1. What is the estimated highest pressure at
the wellhead ?.
2. What is the lowest pressure at wellhead ?.
3. What are the expected maximum and
minimum effluent rates ?. Gas/Oil/Water ?.
4. Is the effluent sweet or does it contain
corrosives ?. If it does contain corrosives,
what are the expected highest concentrations of
H2S (This will also include CO2 amounts).

8. Guide to Better Service and Correct
Sizing of Equipment (Continued)
Guide to Better Service and Correct
Sizing of Equipment (Continued)
5. What is the expected A.P.I. of liquid hydrocarbon
and the specific gravity of gas ?.
6. What is the customer’s requirement for disposal
or storing of liquid hydrocarbon and H2O ?.
7. Are there any special requirements such as
governing bodies’ special rules or regulations,
i.e., maximum weight restrictions, etc. ?.

10. DRILL STEM TESTING
Definition
• Temporary completion of a well to gather
reservoir data and information for
evaluation.
• Measurement of formation parameters and
characteristics are under dynamic
conditions. Disturbance (flow) of the
formation is measured (Pressure
transient).

11. Objectives
• Identify the formation
fluid
• Determine the rate at
which fluids can be
produced
• Determine reservoir
parameters
(Productivity, Permeability,
Well Bore Damage, etc )
• Calculating the
Economic Feasibility
of the Well
DRILL STEM TESTING

12. SECONDARY
CIRCULATING VLV.
DRILL COLLARS
PRIMARY
CIRCULATING VLV.
TESTER VLV.
WORK STRING
PRESSURE /
TEMPERATURE RECORDERS
PACKER BYPASS
PACKER
DRILL COLLARS
DRILL STEM TESTING
PACKER
• Will safely separate well in two sections.
• Will protect formation
• Allow flowing the well inside Tubing while Isolating
the Annulus
PACKER
• Will safely separate well in two sections.
• Will protect formation
• Allow flowing the well inside Tubing while Isolating
the Annulus
PACKER By Pass
• Will divert mud while tripping in and out of the hole.
• Will protect Packer elements during circulation.
• Allow equalization of differential pressure when
unsetting packer
PACKER By Pass
• Will divert mud while tripping in and out of the hole.
• Will protect Packer elements during circulation.
• Allow equalization of differential pressure when
unsetting packer
Pressure Temperature Recorders
• Will record pressure transient
• Must be carried safely and must be protected.
• Location in the string can vary.
• Multiple options exists
Pressure Temperature Recorders
• Will record pressure transient
• Must be carried safely and must be protected.
• Location in the string can vary.
• Multiple options exists

13. SECONDARY
CIRCULATING VALVE
DRILL COLLARS
PRIMARY
CIRCULATING VALVE
TESTER VALVE
WORK STRING
Pressure / Temperature
Recorders and Carriers
Packer Bypass
Packer
DRILL COLLARS
DRILL STEM TESTING
Tester Valve
• Will provide DOWN HOLE closure.
• Will add a safety barrier. Allow pressure control
inside the string.
• Various types, some allow to “Lock Open” and can
be reversed to “Normal Mode”.
Tester Valve
• Will provide DOWN HOLE closure.
• Will add a safety barrier. Allow pressure control
inside the string.
• Various types, some allow to “Lock Open” and can
be reversed to “Normal Mode”.
Drill Collars
• Will provide a SAFE separation between Ball Valves.
• Will add weight to packer protecting the Tubing.
Drill Collars
• Will provide a SAFE separation between Ball Valves.
• Will add weight to packer protecting the Tubing.
Primary Circulating Valve
• Will provide a mean to circulate without unsetting the
packer. (Before and/or after the DST, and with NO
manipulation of the Tubing)
• Will be re-closable.
• Can isolate formation during circulation, adding
safety to the operation.
Primary Circulating Valve
• Will provide a mean to circulate without unsetting the
packer. (Before and/or after the DST, and with NO
manipulation of the Tubing)
• Will be re-closable.
• Can isolate formation during circulation, adding
safety to the operation.

14. SECONDARY
CIRCULATING VALVE
Drill Collars
Primary Circulating Valve
Tester Valve
WORK STRING
Pressure / Temperature
Recorders and Carriers
Packer Bypass
Packer
Drill Collars
DRILL STEM TESTING
Secondary Circulating Valve
• To provide a mean to circulate if the primary
circulating valve fails. (Before or after the DST, and
with NO manipulation of the Tubing)
• Could be re-closable, or a one shot.
• Can isolate formation during circulation, adding
safety to the operation.
Secondary Circulating Valve
• To provide a mean to circulate if the primary
circulating valve fails. (Before or after the DST, and
with NO manipulation of the Tubing)
• Could be re-closable, or a one shot.
• Can isolate formation during circulation, adding
safety to the operation.
Work String
• To provide a conduct for the hydrocarbons to
surface.
• To have a mean to operate mechanical tools, such as
Packers or other valves.
• Typically in Cased Hole DST Tubing will be used. In
Open Hole DST Drill Pipe will be used.
Work String
• To provide a conduct for the hydrocarbons to
surface.
• To have a mean to operate mechanical tools, such as
Packers or other valves.
• Typically in Cased Hole DST Tubing will be used. In
Open Hole DST Drill Pipe will be used.

15. TOOL SYSTEM APPLICATIONS
• OPEN HOLE
• CASED HOLE
DRILL STEM TESTING

16. TYPICAL
OPEN HOLE
DRILL STEM
TESTING
SYSTEM
IMPACT SUB REV. CIRC. VLV.
DRILL PIPE
DRILL COLLARS
DUAL CIP VALVE
HYDROSPRING TESTER VLV.
PRESSURE RECORDER
VR SAFETY JOINT
ANCHOR PIPE SAFETY JT.
TEMPERATURE RECORDER
NR PACKER
BIG JOHN JAR
FLUSH JOINT ANCHOR
PRESSURE RECORDER

17. TYPICAL
CASED HOLE
DRILL STEM
TESTING
SYSTEM
RD SAFETY CIRCULATING VLV.
PREMIUM THREADED TUBING
DRILL COLLARS
EXPRESS CIRCULATING VLV.
SURFACE READOUT SYSTEM
SELECT TESTER VLV.
MPV VALVE
PRESSURE / TEMPERATURE REC.
CHAMP IV PACKER
VERTICAL SHOCK ABSORBER
TIME DELAY FIRING HEAD
R/A TAG SUB
BIG JOHN JAR
RTTS SAFETY JOINT
WORK STRING
RADIAL SHOCK ABSORBER
VANN GUNS
BELOW PKR. HYD. SAFETY JOINT

19. Surface Well Test Package

20. Surface Test Tree

21. Data Header

22. Choke Manifold

23. Steam Heat Exchanger

24. Indirect Fired Heater

25. Separator

26. Test Tank

27. Transfer Pump

28. Burner Boom

29. Burner Head
Air Inlet
Oil Inlet
Igniter Connections
Nozzle
Gas
Jets
Pilot

30. Chemical Injection Pump

31. Well Test Lab

33. Air Compressor

34. SCAN (Surface Computerized Acquisition Network)
– PowerWell Services SCAN combines the most up-to date electronic hardware
and data gathering software for unbeatable performance during well test
operations.
– Present equipment consists of Computer and peripherals connected to
transducers and transmitters measuring pressure, temperature, and flow rates.

35. Data Acquisition

36. 0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
10/2712:00:00
10/2800:00:00
10/2812:00:00
10/2900:00:00
10/2912:00:00
10/3000:00:00
10/3012:00:00
10/3100:00:00
10/3112:00:00
11/0100:00:00
11/0112:00:00
11/0200:00:00
11/0212:00:00
11/0300:00:00
11/0312:00:00
11/0400:00:00
11/0412:00:00
11/0500:00:00
11/0512:00:00
11/0600:00:00
Pressure(psi)
Time (mm/dd hh:mm:ss)
60
80
100
120
140
160
180
200
220
240
260
Temperature(°F)
Pressure Inflection Point Temperature
Pressure up
tubing to fire
the guns
Shut in at the choke
manifold and cycle
the OMNI to spot
diesel to lower the
hydrostatic head
Pre-stimulation flow
period for formation
cleanup.
Acidising the formation by
bullheading from surface
Post-Stimulation
flowback and cleanup
Steady flow on
a small choke
Pressure buildup
Second flow period
for sample catching
Pressure & Temperature History Plot for Marrat Object II

37. Reporting Formats
The Software Gives The Operator The Ability To Create Custom Report Formats
And Save Them For Later Use

38. Emergency Shutdown System
• The Emergency Shutdown (ESD) system consists of a panel which maintains 1500 psig hydraulic pressure via
a flexible high pressure hose to the Surface Safety Valve or Surface Test Tree flow wing valve. The hydraulic
pressure holds the valve open. In the ESD mode this hydraulic pressure can only be maintained provided the
control valve inside the panel is held closed by a pilot air supply of approximately 40 psig.
• This 40 psig pilot air line is fed via ¼" plastic hose to Hi/Lo pressure pilots and ESD push button stations
situated around the installation:
• Upstream of the choke manifold providing overpressure and line rupture protection for the high pressure
pipework.
• Downstream of the choke manifold providing overpressure and line rupture protection for the low pressure
pipework.
• On the holding tank providing overpressure protection of the vessel.
• On the Heat Exchanger shell providing overpressure protection of the shell if the coils rupture.
• On the low pressure coils of the heat exchanger, providing overpressure protection in the event of a blockage
downstream.
• On the high pressure coils of the heat exchanger, providing overpressure protection in the event of a blockage
upstream.
• Push buttons situated : a) In driller dog house, b) Outside Company office, c) At escape lifeboats, d) In the
welltest area, e) On the ESD panel
• Should any of the Hi/Lo pilots detect over/under pressure during the flow period the pilot air pressure would be
vented, causing the panel control valve to dump the hydraulic pressure that holds the actuator valve open.
The spring inside the actuator closes the actuator valve.
• Should any of the ESD buttons be activated, again the pilot air supply would be dumped and the same
sequence of events would occur.
• A manual override is incorporated in the panel and isolation valves are installed at the Hi/Lo pilots to allow for
pressure testing of the system.

39. Emergency Shutdown System
Fusible
Plug
S.T.T.
Manifold Optional Remote
E.S.D. Station
Pneumatic
Hydraulic
Hydraulic Return
Hydraulic
Quick Exhaust
Fusible
Plug
DS Pilot DS Pilot DS Pilot DS Pilot
Hydraulic
Actuator
Choke
Manifold
Heat Exchanger Separator Test Tank Pump Burner