Petroleum well drilling engineering accidents early-warning system based on layered fuzzy system

An oil drilling and fuzzy system technology, applied in general control systems, control/regulation systems, instruments, etc., can solve problems such as unrealistic early warning of oil drilling engineering accidents, and achieve the effect of convenient early warning

Inactive Publication Date: 2008-02-06
ZHENGZHOU UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is unrealistic to use the existing traditional fuzzy theory to early warning of oil drilling engineering accidents

Method used

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  • Petroleum well drilling engineering accidents early-warning system based on layered fuzzy system
  • Petroleum well drilling engineering accidents early-warning system based on layered fuzzy system
  • Petroleum well drilling engineering accidents early-warning system based on layered fuzzy system

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Embodiment Construction

[0028] The oil drilling engineering accident warning system based on the layered fuzzy system of the present invention is composed of the following steps:

[0029] The first step is to establish a model database for early warning of oil drilling engineering accidents:

[0030] First, by summarizing the experience and knowledge of oil drilling operators and relevant experts, a model database for early warning of oil drilling engineering accidents is established. For the whole process of oil drilling, five different working states are determined according to the logical combination of sensor states and drilling process specifications. These working states have different characteristics, and the types of possible accidents and sensor variable symptoms are also different. The established model database is shown in Table 1. This database is an open system, which can be modified and supplemented according to the actual situation and new expert knowledge.

[0031] The second step is...

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Abstract

The present invention discloses an oil drilling engineering accident early warning system based on a hierarchy fuzzy system. First, a stimulant database for oil drilling engineering accident early warning is created; second, an input variable for oil drilling engineering accident early warning; third, the characteristic information of input signals is analyzed; fourth, a structural model of the hierarchy fuzzy system is created; fifth, an interval mapping and a hierarchy fuzzy reasoning of a unified model are done for the input variable in the third step; sixth, the output quantity of the oil drilling engineering accident early warning system is confirmed; seventh, the self-adjustment of the early warning result is done. The present invention has the advantages that the hierarchy fuzzy system is used to translate the excessive physical variable in the oil drilling engineering accident early warning system into a hierarchy system formed by connecting hierarchically with a reduced dimensionality fuzzy unit, and make the regular number of the fuzzy system increase with the number of the input variable linearly, thereby putting an end to the phenomenal of dimension calamity, and realizing the purpose of early warning for the oil drilling engineering accident accurately, efficiently and conveniently.

Description

technical field [0001] The invention relates to the application of a fuzzy reasoning model with multiple input physical variables in oil drilling engineering, in particular to an oil drilling engineering accident warning system based on a layered fuzzy system. Background technique [0002] Oil drilling is a high-risk, high-cost system engineering. During the drilling construction process, there are a lot of fuzziness, randomness and uncertainty. The possibility of engineering accidents exists at any time. Once it occurs, it will cause financial and financial losses. Huge waste and loss of time. The occurrence and development of oil drilling engineering accidents is a complex multi-factor process, which is difficult to describe and warn with classical mathematical models; moreover, the experience and knowledge of drilling accidents established by people based on practice and cognition cannot guarantee accurate and timely detection of drilling accidents. Forewarning. Therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/02
Inventor 王杰陈东海朱晓东李新陈树伟侯艳伟刘艳红冯冬青王东署
Owner ZHENGZHOU UNIV
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