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Method and device for obtaining state of oil well collapse

An acquisition method and technology for oil wells, which are used in earth-moving drilling, wellbore/well components, measurement, etc., can solve the problem of low acquisition efficiency in collapsed state of oil wells, and achieve the effect of improving acquisition efficiency.

Active Publication Date: 2019-03-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, using the existing prediction methods, workers are required to conduct oil well bottoming operations, which makes the acquisition efficiency of oil well collapse status not high

Method used

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  • Method and device for obtaining state of oil well collapse
  • Method and device for obtaining state of oil well collapse
  • Method and device for obtaining state of oil well collapse

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Embodiment Construction

[0048] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0049] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention d...

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Abstract

The invention provides a method and device for obtaining the state of oil well collapse. The method includes the steps that fluid injecting well mouth pressure of an oil well is obtained; whether or not the fluid injecting well mouth pressure and fluid injecting time meet preset conditions is judged, wherein fluid injecting time is smaller than or equal to fluid injecting stopping time; if the fluid injecting well mouth pressure and the fluid injecting time meet preset conditions, it is determined that an oil well is in the state of collapse. Through the method and device for obtaining the state of oil well collapse, the efficiency of obtaining the state of oil well collapse is improved.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to a method and device for acquiring the collapse state of an oil well. Background technique [0002] With the rapid development of the national economy, people's demand for oil and other fuels is increasing day by day, and the role of oilfield exploitation in economic construction has become increasingly prominent and has become an indispensable part. [0003] For the open hole sections of some carbonate rock oil wells, oil wells are prone to collapse due to the combination of external and internal factors. Layer modification measures, etc. The collapse of the oil well will cause blockage of the oil well fluid reservoir channel, and even cause the production layer to be buried, which seriously restricts the output of the oil well. In order to predict whether the oil well collapses, in the prior art, the bottom depth of the oil well is usually detected and compared with t...

Claims

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Application Information

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IPC IPC(8): E21B47/06E21B47/00
CPCE21B47/00E21B47/06
Inventor 王明陈文龙廖发明
Owner PETROCHINA CO LTD
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