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Method for determining stratigraphic sequence interface by utilizing interval transit time

A sequence interface and acoustic time difference technology, which is applied in seismology and seismic signal processing for well logging records, can solve time-consuming and labor-intensive problems, and achieve the effect of improving convenience and objectivity, and intuitive and reliable parameter selection

Active Publication Date: 2019-08-30
克拉玛依亚新石油科技有限公司 +1
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This method is more time-consuming

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  • Method for determining stratigraphic sequence interface by utilizing interval transit time
  • Method for determining stratigraphic sequence interface by utilizing interval transit time
  • Method for determining stratigraphic sequence interface by utilizing interval transit time

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[0025] The terms "first", "second" and the like in the description, embodiments, claims and drawings of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, of a sequence of steps or elements. A method, system, product or device is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to the process, method, product or device.

[0026] The technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 1 , an embodiment of the present invention provides a method for determining a stratigraphic sequence boundary using acoustic time difference, including:...

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Abstract

The invention relates to a method for determining a stratigraphic sequence interface by utilizing interval transit time, which comprises the following steps: acquiring a logging value of an acoustic curve in a logging curve; displaying an acoustic value of the logging curve in a logarithmic form; drawing a cross plot by using depths and interval transit time values in the form of logarithm; and identifying the sequence interface according to the change rule of the curve in the cross plot above and below the sequence interface. According to the method, the sequence interface is identified according to the abnormal conditions of the interval transit time corresponding to different depth points; parameter selection is visual and reliable, and function conversion is not needed, thus convenience and objectivity of sequence interface identification are greatly improved.

Description

technical field [0001] The invention relates to the field of oil field exploration and development, in particular to a method for determining stratigraphic sequence boundaries by using acoustic time difference. Background technique [0002] The existing sequence stratigraphy analysis is still mainly based on seismic data and logging sand-mudstone curves. The quality of seismic data determines the accuracy of sequence stratigraphy division. Usually, it is necessary to strengthen the feature point technology and instantaneous phase phase of seismic data. Interpretation of sequence stratigraphy is carried out by special processing such as technology, wave impedance inversion technology, time-frequency analysis technology and neural network technology. In addition, the use of seismic technology to study sequence stratigraphy can only identify long-period sequences such as first-order, second-order, and third-order sequences, but there are problems in the study of short-period or...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/40G01V1/50
CPCG01V1/40G01V1/50
Inventor 贾曙光朱峰
Owner 克拉玛依亚新石油科技有限公司
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