Method and system for optimizing nuclear magnetic resonance logging parameters, storage medium and electronic equipment

A nuclear magnetic resonance and well logging technology, which is applied in the use of nuclear magnetic resonance spectrum for measurement, magnetic resonance measurement, and electronic magnetic resonance/NMR detection, etc. Effects of optimizing reservoir parameters
CN114428360APending Publication Date: 2022-05-03CHINA PETROLEUM & CHEM CORP +1
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2022-05-03

Smart Images

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

Abstract

The invention discloses a method and system for optimizing nuclear magnetic resonance logging reservoir parameters, a storage medium and electronic equipment. The method comprises the following steps that T2 values at different time points of nuclear magnetic resonance logging and corresponding amplitude values are obtained, and a T2 spectrum is obtained; obtaining a T2 cutoff value meeting a preset condition by searching the T2 spectrum; based on each T2 value and the T2 cut-off value, obtaining denoising coefficient distribution through calculation; and obtaining a denoised T2 spectrum through a second calculation formula based on each T2 value and the denoising coefficient distribution. According to the method, the porosity, the movable fluid volume and the permeability are calculated through the accurately denoised T2 spectrum, the accuracy and effectiveness of reservoir parameter evaluation are improved, and drilling of a detection oil well is facilitated.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of geophysical well logging in oil and gas exploration, in particular to a method, system, storage medium and electronic equipment for optimizing nuclear magnetic resonance logging reservoir parameters. Background technique

[0002] Nuclear magnetic resonance imaging technology, also known as magnetic resonance imaging, uses the principle of nuclear magnetic resonance to detect the emitted electromagnetic waves through an external gradient magnetic field. Based on this, it can be drawn into an image of the internal structure of the object. has been widely applied.

[0003] As a special logging method, nuclear magnetic resonance logging is also a physical measurement of formation rocks like resistivity, radioactivity, and acoustic logging. The attenuated echo strings it collects are fluid relaxation signals in rock pores. Reaction. The pore fluid properties and physical properties required by geological res...

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