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AAPG Bulletin

Abstract


Volume: 52 (1968)

Issue: 3. (March)

First Page: 475

Last Page: 487

Title: Future of Geology in Petroleum Exploration

Author(s): Robert J. Cordell (2)

Abstract:

The status of geology in the oil industry is affected adversely by several factors. Although some conditions are beyond the petroleum geologists' control, the role of the profession can be enhanced through (1) better synthesis of pertinent geological data; (2) revisions in the geological approach to exploration; and (3) better coordination of technical exploration programs.

To be adequate, future geological contribution must be revamped to emphasize the following: (1) detailed natural stratigraphic correlations; (2) paleogeographic setting and its changes with time; (3) environmental and facies patterns; and (4) tectonic history. These four phases are closely related; if one is slighted, the rest suffer. All are first-order requirements in the technical search for stratigraphic and stratigraphic-structural traps. None can be undertaken successfully in a broad sense without extensive and intensive study of rock samples and sample content. Accordingly, techniques are suggested to improve the quality of the rock cuttings in future drilling. More individual company responsibility for sample storage is advocated to increase sample accessibility for detailed l thologic and research analyses. Moreover, different types of maps of several consecutive stratigraphic intervals commonly are necessary to make possible sound scientific prediction of petroleum accumulations.

Inculcation of new ideas and methods into operational exploration is made difficult by (1) insufficiencies of time and manpower; (2) fundamental differences of approach between research geologists and operational exploration geologists; (3) the strong dominance of conventional practice; and (4) organizational barriers. Accordingly, progress has been very gradual, and success depends on elaborate and sustained communication.

To provide a more effective exploration mechanism, it is proposed that three exploration stages be formalized as organizational subdivisions in companies. The first stage would be charged with outlining the most favorable exploration areas within the regions and subregions. The geological approach outlined above would be utilized in addition to reconnaissance geophysics. Personnel would consist largely of well-qualified applied research geologists. The second stage would incorporate most of the present exploration geologists, together with seismologists. Their studies would be restricted largely to areas recommended by the first-stage geologists. They would apply first-stage methods, perform seismic analysis on first-stage postulated geological features, and conduct a general search f r geological and seismic structures. The third-stage group would handle local exploration, employing first-stage methods where applicable, together with seismology or gravity surveys. The research specialists would continue to pursue fundamental problems. They also would contribute new methods to the first-stage group and serve as consultants on local problems.

Anticipated objections to this system are discussed. The conclusion reached is that, despite the controversial nature of the proposed organization, it is likely to become the most effective and dependable mechanism for future oil-finding. All explorationists should be aware that the projected future demand for petroleum will require much larger increments of new reserves than have been discovered in the past.

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