abc jakarta small

7/26/2019 ABC Jakarta Small

1/9

Analysis BehindCasing

James Hemingway

New Technology Advisor


2/9

CHFR ToolstringTelemetry

Electronics

Insulating joint

Top current

electrode

Arm section

Hydraulics

Bottomcurrent

electrode 0.0m

13.0m


3/9

CHFR Principle - Two Steps

Rt

Rc

I I

Measure

Rt Formation ResistivityRc Casing Resistance

K Tool factor

Calibrate

Current Source

I

V1

V2

VoRc

and Rc


4/9

RxoRt

Rm

Rm

Rxo

Rt

Laterolog

Laterolog

LaterologLaterologR

esponse

Response

Response

Response

Induction

Response

Induction

Response

Induction

Response

Induction

Response

Logging ToolLogging ToolLogging ToolLogging Tool

Borehole/Borehole/Borehole/Borehole/

CasingCasingCasingCasing

UninvadedUninvadedUninvadedUninvaded ZoneZoneZoneZone

Invaded Zone/Invaded Zone/Invaded Zone/Invaded Zone/

Cement/Cement/Cement/Cement/RxoRxoRxoRxo

Laterolog Physics

CHFRCHFRCHFRCHFR


5/9

CHFR Major Specifications Tool dimensions 3-3/8, (2 1/8 as of 2004)

Pressure/Temperature 15000psi / 150C (300F)

Casing O.D. Range 4.5 to 9-5/8( 2 7/8 for slim

tool)

Maximum Well Deviation None - Use standoffs above

70 deg

Stationary measurement ~ 1 - 5 minutes

Resistivity range ~ 1 - >100 Ohmm (use tool

planner)(depends on Csg wt, #cycles, > 300 Ohmm in Indonesia)

Vertical Resolution 4 feet (similar to LLD)

Depth of investigation ~3+ feet (similar to deep

laterolog)


6/9

1600BWPD to 300BOPD after CHFR

SPE 76730SPE 76730SPE 76730SPE 76730


7/9

Waterentries, lowresistivity

Oil entries,highresistivity

CHFR / PLT Data

(SPE 71715 AGIP North Sea)

3 300

CHFR ILD

1 0

CHFRGR

0 3000

OILFLOW

0 5000

WATERFLOW


8/9

Gas

Waterbreakthrough


9/9

Multi-layered reservoir

Oil production dropped to4bopd

Water-cut of 99 %.

Remediation based onCHFR-Plus results:

Bridge-plug set at xx96 ft.

Results:

Oil production increased

to 970970970970 bopd

Water-cut reduced to 32323232%.the Bridge-plug will be set

later at xx50 ft.

abc jakarta small

Documents