By

R. Harry EddyarsoPT. SARIPARI PERTIWI ABADI

“KMI Goes to Campus Program”Komunitas Migas Indonesia – Universitas Trisakti

25 November 2006

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

Finding The Reservoir : Seismic Survey

Making Access to The Reservoir : Drilling

Optimizing The Reservoir : Testing

Evaluating The Reservoir : Logging

Producing The Reservoir : Completion

SEISMIC ALONG WELL PATH3D DATA

Depth Structure Map

Top B-29A2 Base B-29A2

c.i =25’

Types Of Well Testing Equipment

• DST(Drill Stem Testing)

DST

Open Hole Cased Hole Barefoot

• STE (Surface Testing Eqpt.)

STE

Exploration Clean Ups Production

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 atthe 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).

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. ?.

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).

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

SECONDARY CIRCULATING VLV.

DRILL COLLARS

PRIMARY CIRCULATING VLV.

TESTER VLV.

WORK STRING

PRESSURE / TEMPERATURE RECORDERSPACKER 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

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.

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.

TOOL SYSTEM APPLICATIONS• OPEN HOLE• CASED HOLE

DRILL STEM TESTING

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

TYPICAL CASED HOLE DRILL STEM

TESTING SYSTEM

RD SAFETY CIRCULATING VLV.

PREMIUM THREADED TUBING

DRILL COLLARSEXPRESS CIRCULATING VLV.

SURFACE READOUT SYSTEMSELECT TESTER VLV.MPV VALVE

PRESSURE / TEMPERATURE REC.

CHAMP IV PACKER

VERTICAL SHOCK ABSORBERTIME DELAY FIRING HEAD

R/A TAG SUB

BIG JOHN JARRTTS SAFETY JOINT

WORK STRING

RADIAL SHOCK ABSORBER

VANN GUNS

BELOW PKR. HYD. SAFETY JOINT

Surface Well Test Package

Surface Test Tree

Data Header

Choke Manifold

Steam Heat Exchanger

Indirect Fired Heater

Separator

Test Tank

Transfer Pump

Burner Boom

Burner Head

Air Inlet

Oil Inlet

Igniter Connections

Nozzle

GasJets

Pilot

Chemical Injection Pump

Well Test Lab

Air Compressor

SCAN (Surface Computerized Acquisition Network)

– PowerWell Services SCAN combines the most up-to date electronic hardwareand data gathering software for unbeatable performance during well testoperations.

– Present equipment consists of Computer and peripherals connected totransducers and transmitters measuring pressure, temperature, and flow rates.

Data Acquisition

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

14000

15000

16000

10/2

7 12

:00:

00

10/2

8 00

:00:

00

10/2

8 12

:00:

00

10/2

9 00

:00:

00

10/2

9 12

:00:

00

10/3

0 00

:00:

00

10/3

0 12

:00:

00

10/3

1 00

:00:

00

10/3

1 12

:00:

00

11/0

1 00

:00:

00

11/0

1 12

:00:

00

11/0

2 00

:00:

00

11/0

2 12

:00:

00

11/0

3 00

:00:

00

11/0

3 12

:00:

00

11/0

4 00

:00:

00

11/0

4 12

:00:

00

11/0

5 00

:00:

00

11/0

5 12

:00:

00

11/0

6 00

:00:

00

Pres

sure

(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

Reporting FormatsThe Software Gives The Operator The Ability To Create Custom Report Formats

And Save Them For Later Use

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.

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

HydraulicActuator

Choke Manifold

Heat Exchanger Separator Test Tank Pump Burner