Method and system for recognizing gas logging oil and gas reservoir

A gas logging, oil and gas layer technology, applied in the field of oil and gas field exploration, can solve problems such as poor application effect and unsatisfactory oil and gas layer identification accuracy, achieve good application value and improve the effect of application scope

Inactive Publication Date: 2015-02-04
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Studies have shown that the application effect of these charts in some complex oil and gas layers (such as low permeability oil and gas layers) is poor, and the accuracy of oil and gas layer identification cannot meet the needs of existing oil and gas layer exploration

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  • Method and system for recognizing gas logging oil and gas reservoir
  • Method and system for recognizing gas logging oil and gas reservoir
  • Method and system for recognizing gas logging oil and gas reservoir

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] The invention belongs to reservoir prediction and oil and gas detection technology in the process of exploration and development of oil and gas fields. A large amount of research work has established a new gas logging correction formula, and applied C for the first time on the basis of gas logging correction. 1 / TG-(C 2 +C 3 +C 4 +C 5 ) / TG and (C 4 +C 5 ) / TG-(C 2 +C 3 ) / TG parameter combination to establish oil and gas layer identification chart...

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Abstract

The invention provides a method and a system for recognizing a gas logging oil and gas reservoir. The method comprises the following steps: acquiring gas logging data and test data of a current region; analyzing the gas logging data and the test data to determine a gas logging correction formula; analyzing the gas logging data and the test data to determine an oil and gas reservoir recognition plate; acquiring gas logging data of an unknown region; correcting the gas logging data of the unknown region according to the gas logging correction formula to obtain corrected gas logging data; recognizing the corrected gas logging data according to the oil and gas reservoir recognition plate to obtain a recognition result. The application range of the gas logging and the oil and gas reservoir recognition accuracy are improved, and the requirements on oil and gas seismic exploration are met.

Description

technical field [0001] The invention relates to the technical field of oil and gas field exploration, in particular to the identification technology of reservoirs in the process of oil and gas field development, specifically a method and system for identifying gas logging oil and gas layers. Background technique [0002] Gas logging is a logging method to directly measure the combustible gas content in the drilling fluid, which is carried out during the drilling process. Oil and gas shows can be discovered in time by using gas logging data, and blowout can be predicted, so it is widely used in exploration wells. The gas logging curve is a continuous curve that detects the amount of hydrocarbon gas in the formation in real time. Its height and curve shape directly reflect the vertical change of oil and gas. The properties of the reservoir fluid can be preliminarily judged through the shape of the full hydrocarbon curve, and then The properties of the fluid can be more accura...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 施荣富黄志龙王建平刘春锋鲁法伟马剑
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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