Poza Rica: Its Development, Exploitation and Near Future

Abstract

Abstract A description is given about the development of the Poza Rica Reservoir, production, number of wells, gas-oil ratios, pressure surveys. A brief discussion is given on the Geology and initial conditions of the reservoir. Future reservoir pressures for the next four years are predicted by the short-cut pressure-drop method, and comparisons are made among different projects of water and/or gas injection. A comparison is given, too, among ultimate recoveries under different programs of exploitation. Introduction The Poza Rica Field of Mexico was discovered in June 1930, when Well Poza Rica No. 2 was completed at the top of the structure at a depth of 6,514ft. The field is located 22 miles from the beach of the Gulf of Mexico and almost equidistant from the harbors Tampico and Veracruz. (Figure 1) The field is divided at the surface into five areas, from Northwest to Southeast: Mecatepec area (Mac), Poza Rica area (PH), Petronac area (PN), Escolin area (ESC) and Presidente Aleman area (PA), as shown in Figure 2. As new wells were drilled, the field was gradually developed, starting with the Petronac area, then with Central part, or PR area, then Mecatepec area and finally Escolin and Presidente Aleman areas. These last two were developed only since 1949 and 1950. Figures 3 and 4 show this development and correspond to the pressures surveys of years 1942 and 1949 respectively. Another pressure survey was being undertaken during August 1951. Figure 5 shows graphically the history of the pool. Four main policies of exploitation may be noticed.