well testing milis

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By

R. Harry Eddyarso

PT. SARIPARI PERTIWI AB ADI

“ 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 LESSONLEARNED 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


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 andminimum 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 ofH2s (This will also include CO2 amounts.)




Sizing of Equipment (Continued)


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 gatherreservoir data and information forevaluation.

• Measurement of formation parameters andcharacteristics are under dynamic

conditions. Disturbance (flow) of theformation is measured (Pressuretransient).



Objectives• Identify the formation

fluid

• Determine the rate atwhich fluids can beproduced

• Determine reservoirparameters(Productivity, Permeability,

Well Bore Damage, etc )

• Calculating the

Economic Feasibili tyof the Well

DRILL STEM TESTING



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

• Al low flowing the well inside Tubing while Isolating

the Annulus

PACKER

• Will safely separate well in two sections.

• Will protect formation

• Al low flowing the well inside Tubing while Isolatingthe Annulus

PACKER By Pass

• Will divert mud while tripping in and out of the hole.

• Will protect Packer elements during circulation.

• Al low equalization of di fferential pressure when

unsetting packer

PACKER By Pass

• Will divert mud while tripping in and out of the hole.

• Will protect Packer elements during circulation.

• Al low equalization of di fferential 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 ins ide

the string.

• Various types, some allow to “ Lock Open” and can bereversed 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 o f the Tubing)

• Will be re-closable.

• Can isolate formation during circulation, adding

safety to the operation.


• 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.





SECONDARY

CIRCULATING VALVE

Dril l Collars


Tester Valve

WORK STRING

Pressure / Temperature

Recorders and Carriers

Packer Bypass

Packer

Dril l 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.



Secondary Circulating Valve

• To provide a mean to circulate if the primary

circu lating valve fails. (Before or after the DST, and

with NO manipulation of the Tubing)

• Could be re-closable, or a one shot.



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 w ill be used. In

Open Hole DST Drill Pipe wi ll 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 wi ll be used.



TOOL SYSTEM APPLICATIONS• OPEN HOLE

• CASED HOLE

DRILL STEM TESTING



TYPICALOPEN HOLEDRILL STEM

TESTINGSYSTEM

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 HOLEDRILL STEM

TESTINGSYSTEM

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



Surface Well Test Package



Surface Test Tree



Data Header



Choke Manifold



Steam Heat Exchanger



Indirect Fired Heater



Separator

T t T k



Test Tank

T f P



Transfer Pump

Burner Boom



Burner Boom

Burner Head



Burner Head

Air Inlet

Oil Inlet

Igniter Connections

Nozzle

Gas

Jets

Pilot

Chemical Injection Pump



Chemical Injection Pump

Well Test Lab



Well Test Lab



Air Compressor



Air Compressor

SCAN (Surface Computerized Acquisition Network)



( p q )

– 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.



Data Acquisition

Pressure & Temperature History Plot for Marrat Object II



0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

14000

15000

16000

1 0 / 2 7 1 2 : 0 0 : 0 0

1 0 / 2 8 0 0 : 0 0 : 0 0

1 0 / 2 8 1 2 : 0 0 : 0 0

1 0 / 2 9 0 0 : 0 0 : 0 0

1 0 / 2 9 1 2 : 0 0 : 0 0

1 0 / 3 0 0 0 : 0 0 : 0 0

1 0 / 3 0 1 2 : 0 0 : 0 0

1 0 / 3 1 0 0 : 0 0 : 0 0

1 0 / 3 1 1 2 : 0 0 : 0 0

1 1 / 0 1 0 0 : 0 0 : 0 0

1 1 / 0 1 1 2 : 0 0 : 0 0

1 1 / 0 2 0 0 : 0 0 : 0 0

1 1 / 0 2 1 2 : 0 0 : 0 0

1 1 / 0 3 0 0 : 0 0 : 0 0

1 1 / 0 3 1 2 : 0 0 : 0 0

1 1 / 0 4 0 0 : 0 0 : 0 0

1 1 / 0 4 1 2 : 0 0 : 0 0

1 1 / 0 5 0 0 : 0 0 : 0 0

1 1 / 0 5 1 2 : 0 0 : 0 0

1 1 / 0 6 0 0 : 0 0 : 0 0

P r e s s u r e

( p s i )

Time (mm/dd hh:mm:ss)

60

80

100

120

140

160

180

200

220

240

260

T e m p e r a t ur e (

° F )

Pressure Inflection Point Temperature

Pressure up

tubing to fire

the guns

Shut in at the choke

manifold and cyclethe 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 Formats



The Software Gives The Operator The Abi lity 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 viaa flexible high pressure hose to the Surface Safety Valve or Surface Test Tree flow wing valve. The hydraulicpressure holds the valve open. In the ESD mode this hydraulic pressure can only be maintained provided thecontrol 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 stationssituated around the installation:

• Upstream of the choke manifold providing overpressure and line rupture protection for the high pressurepipework.

• Downstream of the choke manifold providing overpressure and l ine rupture protection for the low pressurepipework.

• 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 blockagedownstream.

• On the high pressure coils of the heat exchanger, providing overpressure protection in the event of a blockageupstream.

• Push buttons situated : a) In dril ler dog house, b) Outside Company office, c) At escape lifeboats, d) In thewelltest 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 bevented, 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 samesequence of events would occur.

• A manual override is incorporated in the panel and isolation valves are installed at the Hi/Lo p ilots to allow forpressure testing of the system.

E Sh td S t




Fusible

Plug

S.T.T.

ManifoldOptional Remote

E.S.D. Station

Pneumatic

Hydraulic

Hydraulic Return

Hydraulic

Quick Exhaust

Fusible

Plug

DS Pilot DS Pilot DS Pilo t DS Pilo t

Hydraulic

Ac tuator

Choke

Manifold

Heat Exchanger Separator Test Tank Pump Burner

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