Trefoil 1

Bass, Tasmania

Trefoil 1 is a petroleum well in the Bass, Tasmania, operated by Origin, drilled to a total depth of 3,545 m.

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Well Information

Well Name: Trefoil 1
Basin: Bass
State: Tasmania
Classification: FEST
Operator: Origin
Driller: Ensco Offshore
Data Summary: Partial WDS Available

Drilling Data

Total Depth: 3,545 m
Datum Elevation: 39.9 m
Spud Date: 22/10/2004
Completion Date: 21/11/2004
Permit: T 18 P
Rig: Ensco 102

Location

Latitude: -39.8623
Longitude: 145.3752

Available Log Data

Log Streams

172

Curves

1,772,769

Data Points

287,892

Metres

Borehole Geometry (4 curves)

Well log curves recorded during wireline logging operations.

Curve	Start	End	Interval
DEVI	1705 m	3530 m	1824 m
HAZI	1705 m	3530 m	1824 m
P1AZ	2416 m	3530 m	1113 m
RB	2416 m	3530 m	1113 m

Caliper (6 curves)

Borehole diameter measurements indicating hole condition and washout zones.

Curve	Start	End	Interval
C1	2416 m	3530 m	1113 m
C2	2416 m	3530 m	1113 m
HCAL	2421 m	3401 m	980 m
HDAR	2414 m	3416 m	1002 m
HDAR	2415 m	3525 m	1110 m
SHSI	2420 m	3531 m	1111 m

Chromato (22 curves)

Well log curves recorded during wireline logging operations.

Curve	Start	End	Interval
CO2	112 m	3545 m	3433 m
ETHA	112 m	3545 m	3433 m
ETHAA	112 m	3545 m	3433 m
FLOW	112 m	3545 m	3433 m
H2SL	112 m	3545 m	3433 m
H2SP	112 m	3545 m	3433 m
H2SS	112 m	3545 m	3433 m
IBUT	112 m	3545 m	3433 m
IBUTA	112 m	3545 m	3433 m
IPEN	112 m	3545 m	3433 m
IPENA	112 m	3545 m	3433 m
METH	112 m	3545 m	3433 m
METHA	112 m	3545 m	3433 m
MTIN	112 m	3545 m	3433 m
MTOU	112 m	3545 m	3433 m
MWIN	112 m	3545 m	3433 m
NBUT	112 m	3545 m	3433 m
NBUTA	112 m	3545 m	3433 m
NPEN	112 m	3545 m	3433 m
NPENA	112 m	3545 m	3433 m
PROP	112 m	3545 m	3433 m
PROPA	112 m	3545 m	3433 m

CMR (39 curves)

Well log curves recorded during wireline logging operations.

Curve	Start	End	Interval
BFV	2414 m	3416 m	1001 m
CBF1	2414 m	3416 m	1001 m
CBF2	2414 m	3416 m	1001 m
CBF3	2414 m	3416 m	1001 m
CBF4	2414 m	3416 m	1001 m
CBF5	2414 m	3416 m	1001 m
CBF6	2414 m	3416 m	1001 m
CBF7	2414 m	3416 m	1001 m
CBP1	2414 m	3416 m	1001 m
CBP2	2414 m	3416 m	1001 m
CBP3	2414 m	3416 m	1001 m
CBP4	2414 m	3416 m	1001 m
CBP5	2414 m	3416 m	1001 m
CBP6	2414 m	3416 m	1001 m
CBP7	2414 m	3416 m	1001 m
CBP8	2414 m	3416 m	1001 m
CFF1	2414 m	3416 m	1001 m
CFF2	2414 m	3416 m	1001 m
CFF2	2414 m	3416 m	1001 m
CFF3	2414 m	3416 m	1001 m
CFF4	2414 m	3416 m	1001 m
CFF5	2414 m	3416 m	1001 m
CFF6	2414 m	3416 m	1001 m
CFF7	2414 m	3416 m	1001 m
CMFF	2414 m	3416 m	1001 m
CMFF	2414 m	3416 m	1001 m
CMRP_3MS	2414 m	3416 m	1001 m
KSDR	2414 m	3416 m	1001 m
KSDR	2414 m	3416 m	1001 m
KTIM	2414 m	3416 m	1001 m
KTIM	2414 m	3416 m	1001 m
T12R	2414 m	3416 m	1001 m
T1LM	2414 m	3416 m	1001 m
T2_DIST_MW[90]	2414 m	3416 m	1001 m
T2CUTOFF	2414 m	3416 m	1001 m
T2LM	2414 m	3416 m	1001 m
T2LM	2414 m	3416 m	1001 m
TCMR	2414 m	3416 m	1001 m
TCMR	2414 m	3416 m	1001 m

Density (20 curves)

Bulk density measurements for porosity calculation and lithology identification.

Curve	Start	End	Interval
DSOZ	2421 m	3401 m	980 m
HDRA	2421 m	3401 m	980 m
HDRA	2414 m	3414 m	1000 m
HPRA	2414 m	3414 m	1000 m
NUCL	2421 m	3527 m	1106 m
PEF8	2414 m	3414 m	1000 m
PEFZ	2421 m	3401 m	980 m
PEFZ	2414 m	3414 m	1000 m
RHO8	2414 m	3414 m	1000 m
RHOZ	2421 m	3401 m	980 m
RHOZ	2414 m	3414 m	1000 m
SBD2	2420 m	3531 m	1111 m
SCO2	2420 m	3531 m	1111 m
SFB2	2420 m	3531 m	1111 m
SFLF	2421 m	3528 m	1106 m
SNB2	2420 m	3531 m	1111 m
SNFA	2416 m	3528 m	1111 m
SNLF	2421 m	3528 m	1106 m
SNNA	2416 m	3528 m	1111 m
SNP2	2420 m	3531 m	1111 m

Dip and Scan (2 curves)

Well log curves recorded during wireline logging operations.

Curve	Start	End	Interval
DDA	2435 m	3524 m	1088 m
DDIP	2435 m	3524 m	1088 m

GR (12 curves)

Well log curves recorded during wireline logging operations.

Curve	Start	End	Interval
ECGR	2414 m	3416 m	1002 m
EHGR	2414 m	3416 m	1001 m
GR	2414 m	3416 m	1002 m
GR	103 m	3396 m	3293 m
HBHK	1705 m	3466 m	1761 m
HCGR	1705 m	3506 m	1801 m
HFK	1705 m	3506 m	1801 m
HGR	2414 m	3416 m	1001 m
HSGR	1705 m	3506 m	1801 m
HTHO	1705 m	3506 m	1801 m
HURA	1705 m	3506 m	1801 m
SGRC	650 m	3533 m	2882 m

Logging Parameters (3 curves)

Well log curves recorded during wireline logging operations.

Curve	Start	End	Interval
TENS	2414 m	3416 m	1002 m
TENS	2414 m	3416 m	1001 m
TENS	1705 m	2416 m	710 m

Miscellaneous (5 curves)

Well log curves recorded during wireline logging operations.

Curve	Start	End	Interval
BS	2414 m	3416 m	1001 m
DEPT	650 m	3548 m	2898 m
DEPT	103 m	3416 m	3312 m
DEPT	112 m	3545 m	3433 m
DEPT	112 m	3545 m	3433 m

Mudlog (14 curves)

Well log curves recorded during wireline logging operations.

Curve	Start	End	Interval
HKLD	112 m	3545 m	3433 m
ROP	112 m	3545 m	3433 m
RPM	112 m	3545 m	3433 m
SPP	112 m	3545 m	3433 m
SROP	666 m	3548 m	2881 m
TDEP	2414 m	3416 m	1002 m
TDEP	2414 m	3416 m	1001 m
TDEP	1705 m	3530 m	1824 m
TDEP	2414 m	3416 m	1001 m
TDEP	2416 m	3530 m	1113 m
TGAS	112 m	3545 m	3433 m
TGASA	112 m	3545 m	3433 m
TORQ	112 m	3545 m	3433 m
WOB	112 m	3545 m	3433 m

Neutron (6 curves)

Porosity measurements derived from neutron or density tools, indicating reservoir storage capacity.

Curve	Start	End	Interval
HNPO	2414 m	3416 m	1001 m
HTNP	2414 m	3416 m	1001 m
NPHI	2414 m	3416 m	1002 m
NPOR	2414 m	3416 m	1002 m
TNPH	2414 m	3416 m	1002 m
TNPH	2414 m	3398 m	983 m

Resistivity (30 curves)

Electrical resistivity logs used to evaluate fluid content and identify hydrocarbon-bearing zones.

Curve	Start	End	Interval
DI_HRLT	2414 m	3416 m	1001 m
HMIN	2414 m	3416 m	1001 m
HMNO	2414 m	3416 m	1001 m
HTEM	2414 m	3416 m	1002 m
RLA0	2414 m	3416 m	1001 m
RLA1	2421 m	3406 m	985 m
RLA1	2414 m	3416 m	1001 m
RLA2	2421 m	3406 m	985 m
RLA2	2414 m	3416 m	1001 m
RLA3	2421 m	3406 m	985 m
RLA3	2414 m	3416 m	1001 m
RLA4	2421 m	3406 m	985 m
RLA4	2414 m	3416 m	1001 m
RLA5	2421 m	3406 m	985 m
RLA5	2414 m	3416 m	1001 m
RM_HRLT	2414 m	3416 m	1001 m
RM_HRLT	2414 m	3416 m	1001 m
RSOZ	2421 m	3406 m	985 m
RT_HRLT	2414 m	3416 m	1001 m
RXO_HRLT	2414 m	3416 m	1001 m
RXO8	2414 m	3416 m	1001 m
RXOZ	2421 m	3406 m	985 m
RXOZ	2414 m	3416 m	1001 m
SDDE	651 m	3536 m	2884 m
SEDP	651 m	3536 m	2884 m
SEMP	651 m	3536 m	2884 m
SESP	651 m	3536 m	2884 m
SEXP	651 m	3536 m	2884 m
SFXE	666 m	3533 m	2866 m
STEM	652 m	3537 m	2884 m

Sonic (7 curves)

Acoustic travel time logs used for porosity estimation and seismic calibration.

Curve	Start	End	Interval
DT2	1705 m	3513 m	1808 m
DT4P	1705 m	3513 m	1808 m
DT4S	1705 m	3511 m	1806 m
DTCO	1705 m	3513 m	1808 m
DTSM	1705 m	3511 m	1806 m
PR	1705 m	3511 m	1806 m
VPVS	1705 m	3511 m	1806 m

SP (2 curves)

Spontaneous potential logs measuring natural electrical potentials for permeability indication.

Curve	Start	End	Interval
SP	2414 m	3416 m	1002 m
SP	2421 m	3416 m	995 m

Trefoil 1

Well Information

Drilling Data

Location

Available Log Data

Borehole Geometry (4 curves)

Caliper (6 curves)

Chromato (22 curves)

CMR (39 curves)

Density (20 curves)

Dip and Scan (2 curves)

GR (12 curves)

Logging Parameters (3 curves)

Miscellaneous (5 curves)

Mudlog (14 curves)

Neutron (6 curves)

Resistivity (30 curves)

Sonic (7 curves)

SP (2 curves)

Location Map

Nearby Wells