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MAYFIELD #1

API 3508720177 · McClain County, Oklahoma

ACOIL
API
3508720177
Operator
CHARTER OAK PRODUCTION CO LLC
County
McClain
Location
Sec 6 06N 02W (IM)

Completion

Oklahoma files 1 completion report for this well. One carries a production test the operator filed.

Completion 1

STRAIGHT HOLEACOIL
Spudded
2014-09-06
Drilling finished
2014-09-09
Completed
2015-01-24
First production
2014-11-25
Total depth
8,985 ft
Operator
CHARTER OAK PRODUCTION CO LLC

Intervals

FormationProducedPerforated (ft)Treatment
PENN BASAL UNCONF SANDOIL7,880–7,906Acid, Frac
WOODFORDOIL7,936–8,012Acid, Frac
HUNTONOIL8,046–8,128Acid, Frac
SYLVANOIL8,466–8,486Acid, Frac
VIOLAOIL8,518–8,711Acid, Frac

Production tests

TestedOil (bbl/d)Gas (MCF/d)Water (bbl/d)Gravity (°API)Shut-in (psi)Choke
2014-09-30000—1,350—
2014-10-17000—966—
2015-01-2440134043.7550—

A production test is one measurement the operator made on one day and filed with Oklahoma. It is not a monthly average and it does not describe how the well produced afterwards. The choke size is shown exactly as filed: Oklahoma records it in inches on some reports and in sixty-fourths of an inch on others, and names the unit on neither. A dash is a measurement Oklahoma did not file, or one it filed outside any physically possible range.

Casing

StringSize (in)Weight (lb/ft)GradeSet (ft)Cement (sacks)
PRODUCTION5 1/217N-80 / P-1108,927675
CONDUCTOR———500
SURFACE9 5/8——640300

Drilling permit

Oklahoma files 1 application to drill this well, naming 10 target formations. A permit records what an operator asked to do, not what it did. A target formation is where the operator aimed, and the hole may have missed it, stopped short of it or never been drilled.

Filed 2014-06-25

WRAREStraight hole
Permit API
35087201770001
Operator
CHARTER OAK PRODUCTION CO LLC
Well type
OIL
Approved
2014-06-25
Expires
2014-12-25
Proposed depth
8,930 ft
Surface casing
640 ft
Ground elevation
1,213 ft

Target formations

FormationExpected top (ft)
HOXBAR5,965
DEESE6,945
PENNSYLVANIA UNCONF BAS SD7,900
WOODFORD7,930
HUNTON8,035
SYLVAN8,270
VIOLA8,395
SIMPSON DENSE8,815
SIMPSON DOLO8,875
BROMIDE8,885

An expected top is the depth the operator predicted before drilling, on the application it filed with Oklahoma. It is not a measurement of where the formation was found.

Location

35.019502, -97.446918

35.01950, -97.44692 · Surface location as filed with Oklahoma

Every well in McClain County, Oklahoma

Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.