A method for determining the stage and state of oil and gas exploration and its application

Abstract

The invention provides a method for determining oil and gas exploration stage and state and application thereof, belonging to the field of oil and gas geological exploration engineering. The method comprises the following steps: S1, acquiring technical parameters and economic parameters of each year of the exploration project; 2, calculating the unit cumulative reserve discovery cost by using thetechnical parameter and the economic parameters; S3, drawing a unit cumulative reserve discovery cost curve; S4, determining the oil and gas exploration stage and state according to the unit cumulative reserve discovery cost curve. A method for reflecting the duality of technology and economy of oil and gas exploration project with one index is realized by use the method of the invention; a chartis used to reflect the continuity of the exploration project and to display and demarcate its stages. The method and index provided by the invention can help to grasp the project state, guide and evaluate the exploration deployment, and improve the efficiency and benefit of exploration.

Description

technical field [0001] The invention belongs to the field of oil and gas geological exploration engineering, and in particular relates to a method for determining the stage and state of oil and gas exploration and its application. Background technique [0002] Oil and gas exploration is a long-term practice with strong uncertainties, ranging from a few years to decades. Even the exploration process in a small area requires the process of accumulating knowledge, practicing exploration, and adjusting deployment, and its phased requirements and characteristics are obvious. At present, in China, basins, depressions, zones, and depressions are mainly used as units, and the degree of geological understanding (such as source, reservoir, cover, transportation, enclosure, and protection conditions, etc.), the number, degree, and drilling of resources are discovered. Based on density (such as the number of wells drilled per square kilometer, seismic coverage, etc.), the oil and gas e...

AI Technical Summary

Problems solved by technology

Second, the existing exploration area is often large, the cycle is very long, and the stage division is relatively vague, reflecting that the understanding and signs of the gradual and staged exploration are not obvious, and even the exploration stage has only become the subjective will of decision-makers whether it is pre-exploration or detailed exploration. It is unscientific and uneconomical

Third, there is a phenomenon of emphasizing technology and ignoring economy in exploration practice, and the concept of economic input and return is in a recessive state

Obviously, the concept of risk is not systematic, the method is not available, and it fails to take into account the resource itself and the operating status, and fully reflects the dual constraints and risks of production and operation activities.

Fourth, the existing method of stage division and state labeling is one-sided and lacking, the standard is not clear enough, the boundary and state are vague, and it is difficult to grasp and apply. Correspondingly, different stages and states are different, guiding the strategy and deployment of oil and gas exploration. , effectiveness and economy are very insufficient

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