Lower Glen Rose Research Articles

Developments in East Texas during 1941: ABSTRACT

The marked increase in exploratory tests in East Texas during 1941 resulted in the discovery of three oil fields. Two of these fields are producing from the Woodbine formation and one from the Rodessa zone of the lower Glen Rose formation. In the Hawkins field, which was the major 1940 discovery, a rapid development program took place and 243 oil wells, 3 gas wells, and 8 dry holes were drilled. The number of completions in other proved fields exceeded that of 1940. End_of_Article - Last_Page 905------------

Development in East Texas During 1938

Two new oil-producing areas, two new gas-distillate areas, and oil production in two old gas fields were discovered in East Texas during 1938. Areal extensions were added to two fields. Many of the important exploratory tests were directed to the Paluxy, lower Glen Rose, and Travis Peak formations (Lower Cretaceous). Some of these tests were located on proved structural features previously condemned in shallower formations, and others were located in proved fields. Several of the deeper tests penetrated zones which added materially to the knowledge of the Trinity and pre-Trinity (?) stratigraphy of the East Texas basin.

Lisbon Oil Field, Claiborne and Lincoln Parishes, Louisiana

The Lisbon oil field, in Claiborne and Lincoln parishes, Louisiana, was discovered in December, 1936. From present information, it appears that the localization of oil is controlled by the lenticular development of porosity in the Patton limestone which flanks the south edge of a broad structural nose. Production is obtained from the Patton limestone zone of lower Glen Rose age at an average depth of 5,200 feet. The effective porosity of the Lisbon producing zone is highly variable in thickness, varying from 4 feet to 22 feet, with an average of 12.6 feet. The daily field allowable is 10,000 barrels based on 3,252 developed acres as defined by the Louisiana Conservation Department. The field produced 2,405,000 barrels from 150 wells during 1937. The original gas-oil ratios were very low, varying from 50 cubic feet to 300 cubic feet per barrel; consequently, no separators were used. With a rapid decline in bottom-hole pressures, the gas-oil ratios have shown a proportional increase. However, most wells have a ratio less than 2,000 cubic feet to the barrel at present. There are no established gas or water levels despite apparent interzone communication within the Patton limestone. It is the writers' opinion that the thickness and the areal extent of the Oakes limestone zone are the factors, independent of structure, which will control future developments of the Lisbon field.

Resume of Development in East Texas During 1937

Three new oil-producing areas and three new gas and gas-distillate areas were discovered in East Texas during 1937. Important areal extensions were added to two fields, and deep tests were drilled in several fields. Most of the important exploratory wells were directed to the Paluxy, lower Glen Rose, and Travis Peak formations (Lower Cretaceous). Several of the deeper tests added materially to knowledge of the Trinity and pre-Trinity (?) stratigraphy of the East Texas basin, some penetrating beds heretofore unknown in this area.

Richland Gas Field, Richland Parish, Louisiana

The Richland gas field was the second field discovered in northeastern Louisiana. The discovery well was completed in December, 1926, 10 years later than the discovery of the Monroe gas field, 10 miles northwest. Gas is produced in an area of more than 75 square miles at depths ranging from 2,320 to 2,500 feet in Upper Cretaceous beds composed of red gumbo, gray tuffaceous sand, and sand. There is also a gas horizon several hundred feet below the regular and in the upper part of the lower Glen Rose formation. The structure on the base of the Midway clays immediately above the pay horizons is that of an irregular dome elongate north and south, with the least dip away from the field located at the northwest side and toward the Monroe field. The drilling practice has been to set casing at 2,300 feet, then to drill to 2,450 feet and bring in the well. This custom necessitated, because of the nature of the pay horizon, the development of a method of tubing the wells under the existing high open flows and pressures which at the beginning were 1,125 pounds. By January 1, 1931, the field had produced 141,000,000,000 cubic feet of metered gas from 194 wells. The marketing of production is now fully under way with gas from the Monroe and Richland fields moving through pipe lines to Atlanta, St. Louis, New Orleans, Houston, and intermediate cities.