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Method for measuring well by azimuth reflective sound wave

A sound wave and logging technology, applied in the field of azimuth reflection sound wave logging, can solve the problems of not being able to determine the azimuth angle, not having a circumferential direction, and not being able to know, etc., to achieve the effect of increasing the detection distance, increasing the energy of the sound wave, and improving the signal-to-noise ratio

Inactive Publication Date: 2009-05-06
BC P INC CHINA NAT PETROLEUM CORP +1
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AI Technical Summary

Problems solved by technology

At present, the far-detection reflected acoustic wave imaging logging tools under development at home and abroad do not have the ability of circumferential (ie, azimuth) resolution. It is possible to evaluate the distance and dip but cannot determine their azimuth (i.e. cannot know which side of the well wall they are on)

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  • Method for measuring well by azimuth reflective sound wave
  • Method for measuring well by azimuth reflective sound wave
  • Method for measuring well by azimuth reflective sound wave

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Embodiment Construction

[0038] Such as Figure 1 to Figure 5 As shown, the present invention provides a kind of azimuth reflection acoustic wave logging method, and its acoustic system for logging includes a transmitting probe 1 and at least one receiving probe 2, such as figure 2 As shown, the transmitting probe 1 adopts the phased combined circular arc array sound wave radiator described in the invention patent No. ZL 20031011 5236.1, and the receiving probe 2 is a monopole sound wave receiving transducer, such as image 3 and Figure 4 As shown, the at least one receiving probe 2 can be arranged on one side or both sides of the transmitting probe 1, preferably, the transmitting probe 1 and at least one receiving probe 2 can be arranged on the well axis of the borehole to be measured on; as figure 1 As shown, the logging method includes steps:

[0039] A. arrange the transmitting probe 1 and at least one receiving probe 2 in the borehole to be measured;

[0040] B. Change the array element com...

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Abstract

A method of using position reflection acoustic wave to test well placing radiator and receiving probe in liquid packed well hole to be tested, radiating sound wave to certain side well wall by radiator with changed array element, making well side media in position angle range joint vibration and well side media out of position angle range not joint vibration, carrying out scanning measurement on well ground layer in said range, receiving reflection acoustic wave signal containing only certain side of well side media information by various probes, processing received signal and obtaining acoustic evaluation of well side ground layer in position angle range.

Description

technical field [0001] The invention belongs to the field of applied geophysics, relates to a well logging method, in particular to an azimuth reflection sound wave logging method. Background technique [0002] At present, oil exploration and production are becoming more and more difficult. It is urgent to understand the distribution of oil and gas reservoirs and remaining oil in complex formations such as low porosity, low permeability, heterogeneity, and anisotropy. New measurement methods must be explored . Due to the low resolution of 3D seismic exploration and interwell seismic exploration, it is not easy to be used to evaluate the microgeological structure near the wellbore and guide directional drilling. Reflected acoustic logging mainly includes reflected ultrasonic pulse imaging logging and remote detection reflected acoustic imaging logging under development. Reflected ultrasonic pulse imaging logging is mainly used to image the surface of the wellbore medium and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/44G01V1/48E21B47/00E21B47/14
Inventor 乔文孝鞠晓东车小花
Owner BC P INC CHINA NAT PETROLEUM CORP
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