The Aransas Pass Progress (Aransas Pass, Tex.), Vol. 30, No. 17, Ed. 1 Thursday, July 27, 1939 Page: 6 of 8
This newspaper is part of the collection entitled: The Aransas Pass Progress and was provided to The Portal to Texas History by the Ed & Hazel Richmond Public Library.
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... /
_ uced
Three Major
Oil Bearing: Sands
(Continued from y»ge two)
sandstone cap*, aarrdjr shales and
Since there is no definite
Coraonmifera to use as a marker for
the top of this formation, it may
determined hy lithology and hy
•he increase in porosity and resis-
•>Tity as ehown on the electrical
logs. Both the 7100- and 7200-
•oot producing sands at McCamp-
beM are encountered in the Frio
horizon.
Surface Geology
Th« 'McCampbell field lies in a
topographically low area, consist-
»ng of coastal plainhand marsh
lands. The surface hdds, compos-
ed of alluvial sand and Beaumont
cSaya* rite irom sea level on the
western flank of the field in the
'eicinity of Puerto Bay, to an ele-
vaUon of 84 feet in the immediate
wicinrty of Avenue B; then the beds
<fip to sea level again on the east
towards Redfish Bay. The high-
est portion closes on the 8ft-foot
contour, which is a northeast-
•outhw<e*t high sand ridge. This
eand ridge is known as Live Oak
Ridge
Sub-Surface Geology
The field is a gentle anticlinal
western closure against the up-
throw aide of a north-south fault.
The major axis of the McC-ampbell
structure extends north 35 degrees
«aat for a distance of 4 miles. The
minor axis of the structure extends
81 miles east-west.
As shown on Plate I, a structure
map of the field contoured on top
of the 6500-foot sand, the highest
fioint structurally is in the vicinity
•of the eastern portions of Blocks
Noe. 10 and 11. In this portion* of
•he field the 6500-foot sand was en-
'Countered at a minus 6443 feet in
Atlantic Refining Company’s Por-
terfield B-0. The 6500-foot produc-
ing sand dips west, .south, and
north to a minus 6550 feet on the
outer flanks of the etructure. There
is 117 feet of western* closure on
the 0500-foot sand. Generally, the
minus 0540-foot contour is the out-
dr extent of production in the 6500-
foot sand. In the area east of Av-
enue B, She true 6500-foot produc-
ing sand lenses out on the highest
r. petition of the structure
u vfrJPto** 11, a structure map con-
■tiQured on top of *the Marine Frio
formation, indicates that the deep-
• «r horizons conform structurally
with the shallower beds. Atlantic
.Refining Company encountered the
•op of the Frio at minus 6953 feet
In Porterfield B-0. located in Block
No. 11. From this point, which is
ghructurally the highest in the field,
(the Frio dips westward to minus
•TO63 feet on the outer 'flanks of the
RICHARDSON NO. 1 SHERWOOD CROSS SECTION
fm
ItfW
A cross section of nine repre-
sentative Schlumberger survey
showings in nine well* of the
field. Of particular interest are
Richardson’* No. 1 Sherwood,
drilled to 9,074 feet and Atlantic’s
1-C Porterfield, drilled to 8M9
feet, the two deepest teats in the
field.
The electrical survey interpre-
tations are by Reagan Tucker
and Travis Hicks
INTRACOASTAL CANAL
WORK NEAR FREEPORT
Work began during the past
week on another link in the Texas-
Louisiana intracoastal canal, the
section between Freeport and Bas-
trop Bayou. Besides “dredgtng and
improving an old channel an origi-
nal land cut will 'be made.
About 3,800,000 cubic yards of
material will be moved at a cost
of 8210,000.
LAND OWNERS
ROYALTY GUAGING AND
OTHER INTERESTS
LOOKED AFTER
Milton L. Smith 4
P. O. Box Ml ' F
ARANSAS PASS, TEXAS
BONDS
ALL KINDS
I WRITE BONDS IN FIVE MINUTES
W. O. SLATTERY
Telephone 3-4368
1007 Jones Building
Corpus Christi, Teona
STUCK DRILL STEM
structure. This is a western clo-
sure of 109 feet on top of the Frio
formation against the upthrow side
of the fault. As indicated by drill-
ing and by contouring on top of the
Frio formation, the minus 7065 con-
tour is generally considered the
cuter productive limits of the 7100-
foot sand section.
The structural position of the
formations are graphically portray-
ed on Plates III and IV, cross sec-
tions through the field.
As shown on the contour maps
and on cross section A-A‘, the field
derives its closure on the east from
a north-south fault. The up-throw
side of the fault is to the west and
♦he down-throw side, to the east.
As shown by the electrical logs of
'the wells which crossed the fault
plane, there is a 560-foot displace-
ment of the sub-surface beds. The
head of this fault is 45 degrees.
Referring again to the two struc-
ture maps presented, it may be
seen that contouring on either the
0500-foot sand or the Frio forma-
tion indicates the presence of sev-
eral local high and low closures on
the structure. This structural con-
dition materially affects the thick-
ness of the producing sands and
the accumulation of oil and gas in
field.
Deep Explorations
The deepest well drilled to date
is Richardson Petroleum Corpora-
tion's Sherwood 1, located in Sec-
tion No. 80 on the south flank of
the field. This test was drilled to
9074 feet and ran casing to 8310
feet to test reported shows of oil
and gas. It produced salt water on
all production tests and was aban-
doned.
The second deepest well in the
field was Atlantic Refining Com-
pany’s Porterfield 1-C, which was
drilled to 8889 feet. This test is
located in Section No. 12. Shows
of gas were indicated when the
above depth was reached, and in
killing tne well the drill pipe was
stuck. The exact depth of the
sand in which this gas was encoun-
tered is not certain, but it is en-
tirely possible that it was well be-
low the known producing sands.
The 'hole was later sidetracked and
the well completed in the 6800-foot
sand. The electrical logs of the
above two deep test* are shown on
Plate IV, a north-south cross sec-
tion through the field.
CONTOURS ON TOP OF 7100-FOOT MARINE FRIO
Plate II
, ..a-........-L-J—
1
•4
:‘i®^
k'.
Coming oat of the hole with a
cut of drill pipe which stuck
when Atlantic Refining Com-
pany’s Porterfield Estate 1-C
tried to blow out at 8339 feet
The 1-C is located on the line
between lots 7 and 8 in block It.
TOWNSITE’S FIRST
R. B. Bryant’s No. 1 Loeoya
Oil A Gas Company, completed
as the first oil well in the city
limits of Aransai Pass, in block
751, drilling district 10 of the
Aransas Pass survey.
—
CROSS SECTION OF ARANSAS PAS S FIELD
Plate III A-A’
USE MAP B* P0DT9 K8DQ.D 0ATA8YTBWBHDCS
mm t» w
Structure map of Aransas Pass or McCampbell field of San Patricio
and Aransas counties contoured on top of the 7100-foot Marine Frio pro-
ducing sand. Contour intervals 10 feet Datum sub-sea.
An east-west cross section of the Aransas Pass field. The ten Schlum-
berger survey pictures show clearly the limits of the various geologic per- r]
iods and the limits of the prod* ' '
-j.t' - ■ -Ex |,
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The Aransas Pass Progress (Aransas Pass, Tex.), Vol. 30, No. 17, Ed. 1 Thursday, July 27, 1939, newspaper, July 27, 1939; Aransas Pass, Texas. (https://texashistory.unt.edu/ark:/67531/metapth803027/m1/6/: accessed April 24, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting Ed & Hazel Richmond Public Library.