58 
OTL DISTRICTS OF SOUTHERN CALIFORNIA. 
The horizons from which the Kentuck wells draw their oil are 
about midway of the Sespe formation. The logs of the wells show 
that the strata penetrated are sandstone, with minor layers of shale, 
all of a reddish color. The depth of the wells varies from 600 or 
700 feet to nearly 1,500 feet, and they pass through several zones 
that furnish oil in commercial amounts. The more productive body 
of rock, however, is encountered in the lower half of the drill holes. 
The oil is of a dark green to black color, and its gravity is said to 
be about 30° B. In January, 1906, only seven wells of this group 
were pumping, four on the Kentuck property and three on the Star. 
No. 4 Star was abandoned, because of the oil giving out and water 
coming in. 
HAPPY THOUGHT WELLS. 
The Happy Thought Oil Company’s wells are located in the SE. I 
sec. 1, T. 4 N., R. 20 W., on the south side of Little Sespe Creek, 
immediately east of its confluence with the main stream. The 
wells are drilled in the steeply dipping beds on the south side of the 
syncline from which the Kentuck wells derive their oil. In the 
Happy Thought territory, however, this syncline plunges rapidly 
toward the southeast, so that, considered from one point of view, 
the wells penetrate strata dipping southeastward from a hypothet¬ 
ical anticlinal axis somewhere to the northwest, possibly the Topa- 
topa axis. The wells start just below the brown sandstone at the 
top of the Sespe red beds, the oil, it is said, being derived from 
several layers of soft sandy shale between harder impervious beds. 
On account of the steep dip of the rocks and their alternating hard 
and soft composition, drilling on this property is reported to be 
difficult. 
The company now has three wells down and is drilling a fourth. 
The wells are less than 1,000 feet in depth, the oil being encountered 
at about 500 feet. The production is good at the start, and although 
falling off after a while, soon reaches a normal rate that is about 
the average of the other wells in this region. The oil is brown and 
the gravity about 27° B. A 2-inch pipe line connects the Happy 
Thought property with storage tanks at Brownstone, 3^ miles dis¬ 
tant, whence the oil is shipped by rail to San Francisco. 
FOOT-OF-THE-HILL OR LOS ANGELES WELLS. 
The Foot-of-the-Hill or Los Angeles wells, eight in number, are 
located on Little Sespe Creek about a mile above its entrance into 
the main stream. They are the westernmost wells in the south¬ 
ward sweep of the strata after their passage around the broad east 
end of the general Topatopa anticline. They are also adjacent to, 
yet in strata not involved in, the zone of highly crushed rocks that 
form so conspicuous a feature at the confluence of Little Sespe and 
