272 RECOKD OF DEEP- WELL DRILLING FOR 1905. 
1569. Well near Carrizo Springs, Dimmit County. 
[Well begun in May, 1903; completed in June, 1903. Authority, F. Moehrig, driller. No samples.] 
A considerable number of flowing wells have been drilled in the vicinity of Carrizo 
Springs. The formations penetrated are largely sands and sandstones thought to be of 
early Tertiary age. 
Record of well 3 miles north of Carrizo Springs. 
Feet, 
Red sandy loam 0- 3 
Red clay mixed wit h sand 3- 20 
White sand '. . . 20- 35 
Gravel . . .' 35-37 
Yellow clay 37- 4C 
Blue clay with layers of black material, looked like lignite 40-38C 
Sandstone — well began to flow 380-44( 
Blue rock 440-47C 
Sandstone st ruck best flow here 470-501 
Blue clay 500-55t 
Rig used, cable. Casing used, 330 feet of 5|-inch. Well flows 150 gallons per minute 
Quality, soft. 
1574. Well near Benavides, Duval County. 
[Well begun August 7, 1905; completed September 15, 1905. Authority, Lawson & Knight, contractor i 
and drillers. No samples.] 
This log of one of the shallow wells drilled for oil in the Piedras Pintas district, Duv* j 
County, shows the character of the rocks overlying the productive formation. Thes t 
rocks arc believed to be of Tertiary age. 
Record of well No. 6, on W. A. Tinneyfarm, in the NW. \ sec. 8. 
Feet. i. 
Soil 0- 
Hard (lint ballast 2- \ ' 
Tough yellow clay 20- I f 
Tough blue clay K5-2I j 
Hard shale 200-2: ;l 
Sand with water, oil, and gas; water rose 150 feet 227-2: 
Hard blue clay '231-4 ( 
I )ark-blue clay with gravel ; gas 400-4 j 
Hard dark-green shale 4(55-4 | 
Shale ; oil and gas 498-5 \ 
Kig used, cable. Casing used, 467 feet of 6-inch. Estimated initial yield of oil, 
barrels in twenty-four hours. Pressure of gas not tested. Quality of oil, heavy. 
1604. Well near Schulenburg, Fayette Comity. 
[Well begun September2, 1904; completed Nnvembcr20, 1904. Authority, James Maresh. No sampl ( 
This log is indefinite, but is given because lew well records from Fayette County hi | 
been published. The formations penetrated are thought to be of Eocene age and n| 
belong in part to the Fayette formation. 
Record of well at Schulenburg. 
Feei i 
Filled ground 0- 
Yellow sandstone 12- j 
Yellow clay 22- j 
Yellow sandstone 30- 
Sand and sandstone 35- 
Hard white rock 92- ; 
