6 
CONTENTS. 
Details of the developed territory—Continued. Page. 
Santa Maria field—Continued. 
The wells—Continued. 
Eastern group of Western Union wells. 103 
Location and structure. 103 
Geology of the wells. 103 
Product.:. 103 
Lompoc field. 104 
Location. 104 
Structure. 104 
Geology... 106 
General statement. 106 
Burnt shale. 106 
Oil zones. 106 
The oil. 107 
Production. 107 
Arroyo Grande field._•. 107 
Location. 107 
Geology. 107 
Structure. 108 
Occurrence of the oil. 108 
Conclusions regarding future development. 108 
Huasna field. 109 
Oil of the Santa Maria district. 109 
Origin. 109 
Physical properties. 113 
General statement. 113 
Color and odor. 114 
Gravity. 114 
Viscosity. 114 
Chemical properties. 114 
Associated hydrocarbons. 118 
Natural gas. 118 
Asphalt. 118 
Technology of production and utilization. 119 
Oil companies of the Santa Maria district. 119 
Well drilling. 120 
Production... 120 
Storage capacity. 121 
Transportation facilities. 121 
Refineries. 122 
Utilization of the oil. 122 
Resume.'. 122 
Plates. 125 
Index. 157 
