Crude oil cracking gas reservoir ancient oil reservoir area calculation method and device

Abstract

The invention discloses a crude oil cracking gas reservoir ancient oil reservoir area calculation method and device. The method comprises the steps that the formation temperature and the formation pressure of a crude oil cracking gas reservoir ancient oil reservoir are obtained; obtaining the density of the same type of crude oil in the ancient oil reservoir of the crude oil cracking gas reservoir under the ground standard condition; calculating the volume coefficient of crude oil in the crude oil cracking gas reservoir ancient oil reservoir according to the burial depth of the crude oil cracking gas reservoir ancient oil reservoir; calculating the cracking rate of crude oil in the ancient oil reservoir of the crude oil cracking gas reservoir; obtaining a deviation coefficient of original gas in the ancient oil reservoir of the crude oil cracking gas reservoir; and calculating the area of the ancient oil reservoir of the crude oil cracking gas reservoir according to the formation temperature, the formation pressure, the density of the crude oil under the ground standard condition, the volume coefficient of the crude oil, the cracking rate of the crude oil and the deviation coefficient of the original gas. The method is simple in calculation, high in accuracy and high in practicability.

Description

technical field [0001] The invention relates to the field of oil and gas dynamic accumulation geology, in particular to a method and device for calculating the area of ​​ancient oil reservoirs in crude oil cracking gas reservoirs. Background technique [0002] Oil and gas accumulation geology is the core of petroleum geology, and it is a branch of petroleum geology that studies the formation and distribution of oil and gas reservoirs. Its research content includes static accumulation elements, dynamic accumulation processes, functions and final Accumulation results involve all aspects affecting the formation and distribution of oil and gas reservoirs, such as generation, migration, accumulation, and preservation. The paleo-reservoir area is a very important parameter in the study of accumulation. The determination of the paleo-reservoir area is of great significance for the study of the scale of the paleo-reservoir, hydrocarbon generation potential and resource potential, as...

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Problems solved by technology

The area of ​​ancient oil reservoirs is determined according to the distribution area of ​​bitumen. The disadvantage of this method is that drilling data is required, and it cannot be implemented in areas lacking drilling data. conditions, because the structural form of the current gas field and the structural form of ancient crude oil accumulation gas have changed significantly, so it is necessary to clarify whether the distribution of solid bitumen is affected by structural deformation, that is, whether the cracking of crude oil has been completed before structural deformation

In summary, it is difficult and less accurate to determine the reservoir area of ​​paleo-reservoirs with existing technologies

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