A Method for Measuring the Repeatability of Time-lapse Seismic Data

A time-lapse seismic and seismic data technology, applied in the field of oilfield exploration, can solve problems such as the difficulty of visually measuring the repeatability of seismic data and the fuzzy distinction between repeatability of seismic data
CN110824561BActive Publication Date: 2021-11-23BGP OF CHINA NAT GASOLINEEUM CORP +1
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BGP OF CHINA NAT GASOLINEEUM CORP
Publication Date
2021-11-23

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The application discloses a method for measuring the repeatability of time-lapse seismic data, which belongs to the technical field of oil field exploration. The method includes: firstly making a difference between the start data and the monitoring data to obtain the difference data, and then using the Kaiser window Hilbert operator to respectively obtain the Kaiser window Hilbert channel data corresponding to the start data, the monitoring data and the difference data, Then the envelope data of the seismic data is obtained, the envelope sum is calculated by using the envelope data, and the repeatability factor of the envelope feature is obtained, and the truncation threshold is finally determined, and the repeatability factor of the envelope feature is converted into an envelope by using the truncation threshold In this way, according to the envelope feature repeatability indicator factor with a value of 0 or 1, it is possible to intuitively measure whether the seismic data is repeatable.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present application relates to the technical field of oil field exploration, in particular to a method for repeatability measurement of four-dimensional seismic data. Background technique

[0002] Time-lapse seismic technology is a kind of seismic exploration technology, that is, to stimulate artificial earthquakes in the same area at different times, and use monitoring instruments to conduct repeated observations in the same observation method to obtain seismic data, and finally use the obtained seismic data to study oil and gas. Tibetan dynamic changes.

[0003] Theoretically speaking, seismic data includes data related to the dynamic properties of oil and gas reservoirs and data related to the static properties of oil and gas reservoirs. Dynamic properties refer to properties that may change over time, and the values ​​at different times are usually different. , the static property refers to the property that basically does not change with time...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More