DETAILS OF THE DEVELOPED TERRITORY. 
101 
Between the first zone and the one that has been recognized as the 
second, or zone B, are one or more productive zones 2 to 15 feet thick. 
No two wells show the same sequence of these zones and they prob¬ 
ably represent places of local fracturing. 
The second oil zone (B) is thought to be fairly constant through¬ 
out the area. It consists of alternating barren and productive layers 
of shale, some of the productive layers being from a few feet to as 
much as 20 feet thick. Below the main or upper part of this zone 
are other productive layers, some at least 200 feet below zone B. 
The oil-bearing measures in these zones, as in zone A, are probably 
nothing more or less than fractured portions of the shale. 
PRODUCT. 
The oil from the wells in this area runs from 24° to 26° Baume, and 
is dark brown in • color with the exception of that from one of the 
wells, which is said to be a reddish emulsion of oil and water. All 
the wells show much gas, the best producers, especially, being under 
heavy pressure. 
The production of the individual wells in this group ranges from 
an initial output of 12,000 barrels per day in one well to a daily aver¬ 
age of 150 barrels in another. The following statement concerning 
the production of Hartnell well No. 1, the greatest producer in the 
California oil fields, has been kindly furnished by Mr. Orcutt, of the 
Union Oil Company: 
4 
Well (Hartnell No. 1) started to flow over derrick through 81-inch and between this 
and 10-inch casing December 3, 1904. Gas pressure was very heavy, estimated at 400 
pounds per square inch—was probably much higher, however. Oil was measured in 
an open ditch by use of a miner’s-incli measuring box, and showed 31 miner’s inches, 
or about 12,000 barrels per day. The flow continued for about sixty days and gradu¬ 
ally weakened. September 1, 1905, the well was doing 3,069 barrels per day. 
The oil was stored in earthen reservoirs, and the production to the above date is esti¬ 
mated at 1,500,000 barrels from this well alone. Up to August 15, 1906, the total pro¬ 
duction for the well was something over 2,000,000 barrels. 
The gas accompanying the initial flow of oil was estimated at 4,000,000 cubic feet 
per day. After the well had been gotten under control it furnished gas for running 
20 boilers for well-drilling rigs, and in addition supplied the town of Orcutt (popula¬ 
tion about 200) with gas for domestic purposes. At the present time it is still yielding 
a constant flow, which is used for many purposes in Orcutt. 
GRACIOSA-WESTERN UNION AREA. 
LOCATION AND STRUCTURE. 
The wells at the northeast corner of the Graciosa and northwestern 
corner of the Western Union properties are located on the point of 
the rid ire which runs southward for more than a mile from the main 
Graciosa ridge. The structure of the beds underlying the devel¬ 
oped area is apparently simple, as they are on the southwestern 
flank of the hypothetical Newlove anticline. At least two minor 
