A well trajectory design method and system

A design method and well trajectory technology, applied in the field of well trajectory design method and system, can solve the problems of intermittent research, failure to study continuous changes of reservoir medium, and inability to accurately reflect the lateral distribution and changes of reservoir oil and gas, etc., to achieve The effect of increasing the resolution
CN105093308BActive Publication Date: 2017-11-21CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2017-11-21

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Abstract

The invention discloses a well trajectory design method and system. The method includes: synthesizing the first synthetic seismic record according to the actual logging curve of the reservoir; obtaining the logging curve after the fluid replacement based on the change of the reservoir characteristic parameter caused by the fluid replacement; and synthesizing the first synthetic seismic record according to the logging curve after the fluid replacement The second synthetic seismic record, and according to the changes in the characteristics of the first synthetic seismic record and the second synthetic seismic record, obtain the relationship between the seismic response characteristics of the reservoir and the change of the characteristic parameters of the reservoir; according to the actual seismic profile and the earthquake Seismic comparative tracking is carried out on the relationship between response characteristics and reservoir characteristic parameters to determine the distribution of oil and gas in the vertical and horizontal directions of the reservoir; the well trajectory is designed according to the distribution of oil and gas in the vertical and horizontal directions of the reservoir. The invention can use the seismic records to analyze the lateral distribution of oil and gas in the reservoir and the change law of different azimuths, accurately predict the lateral changes of the reservoir, and design well trajectories more effectively.
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Description

technical field

[0001] The invention relates to the field of petroleum exploration and development, in particular to a method and system for designing a well trajectory. Background technique

[0002] Due to the complex geological conditions, the distribution of oil and gas in the reservoir varies in different directions, which increases the difficulty of oil and gas development. In order to design a reasonable well trajectory and make an economical and reasonable development plan, it is necessary to accurately and carefully understand the distribution state of oil and gas in the reservoir.

[0003] At this stage, the well trajectory design is mainly based on the study of geological structure to understand the favorable combination of oil and gas generation, storage and capping, determine the favorable distribution space of oil and gas, and then use logging data to predict the oil and gas distribution of the reservoir. The advantage of logging data is that it can obtain deta...

Claims

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