A Production Prediction Method for Multi-production Layer Oil Wells Based on Temperature Logging Data

A technology of well logging data and production prediction, which is applied in prediction, data processing applications, complex mathematical operations, etc., and can solve the problems of insufficient prediction accuracy of single production layer productivity

Active Publication Date: 2021-07-06
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0004] Aiming at the problem that the traditional well testing method is insufficient in predicting the productivity of a single production layer in a multi-production layer oil well, the present invention proposes a method for predicting the production of a multi-production layer oil well based on temperature logging data

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  • A Production Prediction Method for Multi-production Layer Oil Wells Based on Temperature Logging Data
  • A Production Prediction Method for Multi-production Layer Oil Wells Based on Temperature Logging Data
  • A Production Prediction Method for Multi-production Layer Oil Wells Based on Temperature Logging Data

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specific Embodiment approach

[0018] Specific implementation method: This embodiment provides the prediction of multi-production layer oil well production based on temperature logging data, using the multi-production layer oil well numerical simulation calculation model established by the present invention, and temperature logging data inversion to predict the production of each production layer.

[0019] The multi-production layer oil well numerical simulation calculation model established by the present invention has a relatively independent wellbore model and a reservoir model as its main body. The two are connected through flow and thermal boundary conditions. The radial model computes and accounts for unsteady states:

[0020]

[0021] where f(t) is the unsteady heat transfer function of the formation.

[0022] The governing equation of the wellbore model is:

[0023] Momentum equation:

[0024]

[0025] Energy equation:

[0026]

[0027] Considering the friction between the fluid and the ...

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Abstract

The invention relates to a method for predicting the production of multi-production layer oil wells based on temperature logging data. For oil wells with multiple production layers, firstly, by analyzing the heat and mass transfer characteristics of wellbore, formation, reservoir and multi-production layer-wellbore coupling, a comprehensive heat transfer model for multi-production layer oil wells was established, and then, in the established On the basis of the model, the actual temperature logging data is substituted into the calculation model to calculate the flow distribution in the wellbore through the inversion method, and further calculate the production of each production layer, using the method , which solves the problem of insufficient prediction accuracy of a single production layer caused by the average distribution method when dealing with multiple production layers in the traditional well testing method; not only can the total production of the oil well be obtained, but also the single production Layer yields are accurately predicted.

Description

technical field [0001] The invention relates to the technical field of reservoir numerical simulation and temperature well testing, in particular to a method for predicting the production of multi-production layer oil wells. Background technique [0002] Reservoir output is the most important parameter in petroleum engineering, and the amount of output is closely related to the actual flow process of fluids such as oil and water inside the production layer of the oilfield during production. At the same time, most oil wells contain multiple production layers. In engineering, well testing is usually used to determine the production of oil wells and other reservoir parameters. The well testing method is widely used because the object is the data that is easy to measure in the oil well, and it is not subject to technical conditions in terms of data collection and data analysis. At present, many different well testing methods have been developed, such as pressure recovery Well t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/11G06F17/18G06Q10/04G06Q50/02
CPCG06F17/11G06F17/18G06Q10/04G06Q50/02
Inventor 年永乐郑磊程文龙
Owner UNIV OF SCI & TECH OF CHINA
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