Sources of Subsurface Information 1155 



Texas draws upon this collection as a basis for subsurface studies covered 

 by various courses. 



Chemical and Geological Laboratories 

 Casper, Wyoming 



The geologic department of the Chemical and Geological Labora- 

 tories offers the following services: 



Stratigraphic well logging: Detailed descriptions of the lithology and 

 paleontology and other pertinent information, together with their strati- 

 graphic correlations based on microscopic examination of well cuttings. 

 Cuttings of current wildcat wells from Wyoming, Montana, North and 

 South Dakota, northern Utah, and Colorado are described on strip logs 

 and standard typewritten sheets. 



Routine field work: This service consists of supervision of drilling 

 wells. 



General consultation: Consulting in all phases of geologic work. 



Reservoir evaluation: Comprehensive study both geologic and from 

 accumulated engineering data based upon the review of primary and 

 secondary core analysis, subsurface-fluid analysis, actual production fig- 

 ures, and extended estimated future development. The service is avail- 

 able for individual oil and gas lease and partial or complete field or total 

 holdings. 



Casper sample cut: Samples from current drilling wells in Wyoming, 

 Montana, North and South Dakota, and northern Colorado and Utah are 

 available. 



Denver Sample Log Service 

 Denver, Colorado 



The Denver Sample Log Service endeavors to serve the oil industry 

 in the following operations: 



Well Sample Processing: The operators of all tests that are drilled 

 in Colorado, Utah, and western Nebraska are contacted for the release of 

 their samples. After acquisition, the samples are washed, dried, and 

 packaged, and then distributed to companies, institutions and individuals 

 that desire a set for examination and library storage. In this service the 

 organization functions as a clearing house for formation cuttings and 

 relieves the companies and institutions of the time and expense involved 

 in the acquisition, preparation and distribution processes. Sample cuts 

 from currently drilled wells are available on a cost per sample basis. 



Sample Analysis: Approximately 40,000 feet of samples from tests 

 drilled in Colorado, Utah, northern New Mexico and western Nebraska 

 are examined microscopically each month. The geologic data observed 

 are recorded in strip log form by conventional graphic lithologic symbols 

 and typewritten abbreviated descriptions. When available, electric logs 



