... of field discovery on the Gulf Coast since Spindletop. Because of depositional influences that are fundamental to the local occurrence of oil, commercial deposits on the coast are related to geologic and geographic zones, the boundaries of which are arbitrarily recognized. This change in discovery type...

... discoveries of oil and gas. The two outstanding achievements in the Gulf Coast were the development of Rabb Ridge, Fort Bend County, and the Conroe field, Montgomery County. The former, discovered in May, 1931, has produced through December 31, 1932, more than 5,000,000 barrels and the latter, discovered...

...Frank W. Michaux, Jr.; E. O. Buck ABSTRACT The Conroe oil field, located in Montgomery County, Texas, was discovered in 1931. It is a broad ovate structure crossed by several normal faults which form a central graben area. The maximum vertical displacements of these faults range from 130 to 165...

... important oil field thus far discovered in the Gulf Coast. Conroe, found early in 1932 on the Raccoon Bend trend (now called the Conroe trend), has two producing sands, both in the Cockfield formation ( Fig. 10 ). The so-called “Upper Cockfield sand,” 30 feet below the top of the Cockfield, is 20-25...

... as to the possible relationship of these structural types to major salt movements. The development of important oil deposits on the flanks of old producing fields has been an outstanding feature of the year. In an effort to make an advance appraisal of the 1939 discoveries based on the meager data...

... in this relatively unexplored trend. In 1963 crude oil production in District 3 was 122.3 million bbls.; cumulative production is in excess of 4.5 billion bbls. Gas production averages more than a trillion cu. ft. annually. Production is from formations ranging in age from Mesozoic to Pleistocene. The Frio trend...

.... , and G. A. Davis , 1976 , Compression and crustal shortening in Andean-type orogenesis : Nature , v. 260 , p. 693 – 694 . Carlos , D. F. , 1953 , Conroe field, Montgomery County, Texas, in D. A. McNaughton, ed., Guidebook, field trip routes, oil fields, geology : Houston , AAPG...

... with the Conroe structure. Production for 1953 was approximately 3,000 barrels of condensate and 159,385 MCF of gas. Alligator Point field, located on the Gulf of Mexico in the Halls Lake area, was discovered by the Brazos Oil and Gas Company and Ohio Oil Company’s Houston Farm Development Company No. 2...

... in that the accumulation of oil and gas is caused by a combination of sand lensing and folding. In the other fields the sand lenses out on the west side along a line trending about N. 20° E. and accumulation is found east of this line, where it crosses a broad transverse fold that has a northwest-southeast axis. The sand...

..., change with age and depth to lighter oils containing more light constituents and less heavy residue, are extremely important in view of this low-temperature history. The data on which Barton based his conclusions have been re-examined to include oils produced from newer fields and the trend...

...,” the East Texas “shore line,” Conroe trend—or their implications from the standpoint of oil accumulation. The art of oil finding was still in its infancy and the kaleidoscopic changes and improvements that followed in the two succeeding decades were not suspected. In the Gulf Coast, following the Lucas...

... at Marietta and passing north of Waurika, Walters, and Hobart to Sayre. The oil fields of southern Oklahoma lie along this line. A magnetic high trend is indicated between Sulphur and Oklahoma City. Another high trend lies east of Rush Springs, Chickasha, and Minco. Another possible high trend...

... and readily understood ( Schultz-Ela et al., 1994 ). The faults in the northwestern Houston area express the regional trend and are the focus of our study. There are three main fault systems in this area—the Hockley-Conroe Fault System, Addicks Fault System, and Long Point-Eureka Heights Fault System...

... trends, which are shown to correspond to known structural trends, such as the Howell-Owosso anticline and the Muskegon anticline. The deepest area of the Michigan basin is indicated by a negative magnetic anomaly. Practical value and application of the magnetic vector maps to field problems is explained...

... in Figure 1 . Fig. 1 Five of the 53 fields in the United States, which have produced 100 million barrels or more of oil, are located in this district. They are Conroe, Humble, Spindletop, Hull, and Hastings, the last two having been added to the list during 1945. Brazoria County .—A gas...

... The Tomball field, in northern Harris County, Texas, is another geophysically discovered field, with initial credit to the torsion balance. Figure 15 gives the gradient picture of this structure. In common with other structures of the Conroe trend, the Tomball picture is characterized by weak closure along...

... Louisiana. The 29 counties which compose this area are the same as those in Texas Railroad District III. Four hundred and forty-four fields with more than 12,000 wells were producing oil and gas in this district at the end of 1952. The central and major part of the Texas Upper Gulf Coast is referred...

... appears to be the most important new field of 1954 is Conroe Townsite in Montgomery County. The Moran Corporation and Gar-Flo Oil Company’s Hunt and Floyd No. 1, the discovery well, was completed in a Yegua sand at 5,128 feet for 134.7 barrels of oil per day. The Humble Oil and Refining Company has been...

... distances. In other areas such as East Texas, the Conroe trend, the Mexia-Luling fault line, southern Louisiana, parts of West Texas, Alabama, Colorado, Nebraska, New York, Pennsylvania, and Illinois, similar “spot” correlations were made from one or more horizons during the 1930’s. It was soon found...

...., “Conroe Oil Field, Montgomery County, Texas,” ibid. , Vol. 20, No. 6, pp. 736–79. Use Catahoula-Frio without differentiation. Remark on “rice” sands near base. 1937. THOMPSON, WALLACE C., “Geologic Sections in Texas and Adjoining States,” ibid. , Vol. 21, pp. 1083–87, section B. Frio is used...