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Automated oil well test classification

a technology of oil wells and classification, applied in the field of oil well testing, can solve the problems of difficult to perform the analysis efficiently and in a timely manner, complex analysis of the data stream of well test data, and is primarily performed manually

Inactive Publication Date: 2008-09-11
HONEYWELL INT INC
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Problems solved by technology

There are also faults—such as when oil is being dumped out the water leg—that introduce specific features into the data stream.
In general, the analysis of the well test data stream is a complex task and is primarily performed manually.
Given the number of wells in a typical production facility, it is difficult to perform the analysis efficiently and in a timely manner.

Method used

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Embodiment Construction

[0011]Various embodiments described herein provide systems, methods, and software for statistical analysis and classification of oil well tests. In one such embodiment, a system is composed of three parts. The first part is a repository of historical well tests that are provided with annotation added after manual review of the previous operation on a selected few representative wells. The second part is a set of classification models that do a comparison of a new test with the tests stored in the repository. These models, in some embodiments, are of three types: (a) models that match time series curves of oil and water flow rates with the curves stored in the repository; (b) models that compare long-term production trends on a given well with historical trends stored in the repository; (c) models that detect features of specific faults. The output of each model is a general indication of normality or abnormality of the new test, and may be accompanied by an indication of a specific ...

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Abstract

The subject mater herein relates to oil well testing and, more particularly, automated oil well test classification. Various embodiments described herein provide systems, methods, and software for statistical analysis and classification of oil well tests. Some embodiments include receiving a first set of oil well test results from one or more measurement devices of a well test separator, storing the first set of oil well test results in a database, and annotating one or more tests of the first set oil well test results. The annotated test results are then used to build one or more classification models to enable automated oil well test classification as new oil well tests are performed.

Description

TECHNICAL FIELD[0001]The subject mater herein relates to oil well testing and, more particularly, automated oil well test classification.BACKGROUND INFORMATION[0002]Testing of oil wells, which are located in one production facility, generates a stream of measurements that are taken continually on well test separator equipment and associated piping system. If efficiently processed, this data stream can indicate specific operational issues, such as faults, influences between adjacent wells, and changing reservoir conditions. Wells of a given production facility are tested in a closed sequence and each test takes a specified time interval. Usually, there are multiple relevant characteristics that must be taken into account. Primarily, the test-internal time series sampled during the specified time interval characterize the test itself. The representative statistical characteristics should also be compared with the long-term production trends on a given well. There are also faults—such ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B47/00
CPCE21B43/34E21B49/08E21B47/10E21B49/0875
Inventor STLUKA, PETRMARIK, KARELRIEGER, JOSEF
Owner HONEYWELL INT INC
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