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Device and method for correcting acoustic logging tool through indoor frequency dispersion analysis

A technology of logging instruments and testing instruments, which is applied in instrumentation, geophysical measurement, etc., can solve problems such as no patents, and achieve the effect of ensuring sufficient coupling, stable performance, and easy handling

Inactive Publication Date: 2019-05-21
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Foreign logging companies have their own set of inspection and verification measures, but they are all confidential and no related patents have been seen

Method used

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  • Device and method for correcting acoustic logging tool through indoor frequency dispersion analysis

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention provides a device and a method for correcting an acoustic logging tool through indoor frequency dispersion analysis. The method comprises the following steps: 1, mounting a centering device according to the design; 2, pushing the instrument sequentially from bottom to top joint by joint into a testing tube from one end provided with a jack; 3, mounting an upper plug and a lower plug;4, mounting a valve, a water pipe and a pressurizing pump; 5, injecting water and pressurizing, and regulating the pressure to 30kg; 6, connecting the instrument, switching on the instrument, and acquiring the data by using a dedicated acquisition system; 7, analyzing data, processing a correction value, and storing into a dynamic library; and 8, transferring logging data to an explanation centerwhen the instrument is logged and used, and directly correcting the data during processing. The device and the method for correcting an acoustic logging tool through indoor frequency dispersion analysis disclosed by the invention have the advantages that a testing instrument is corrected, the equipment performance is stable, a structure is simple, the device is convenient to transport, the manufacturing cost is low, maintenance is convenient, correction software is implanted into the dynamic library of the instrument, and the method can be applied to all acoustic amplitude measurement.

Description

【Technical field】 [0001] The invention belongs to the technical field of petroleum logging, and relates to a test instrument, in particular to a device and method for indoor dispersion analysis and correction of an acoustic logging instrument. 【Background technique】 [0002] With the deepening of exploration and development, the difficulty of my country's oil extraction is increasing. This requires logging methods and technologies that can provide more detailed description of formation information in multi-dimensional geometric space under complex formation conditions such as heterogeneity, anisotropy and fracture. [0003] At present, testing instruments with deeper radial detection depth and azimuth evaluation of formations with inhomogeneity around wells are being developed at home and abroad. However, quality control, calibration and scale issues such as the consistency of the receiving transducer of the test instrument and the symmetry of the dipole transducer have alw...

Claims

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Application Information

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IPC IPC(8): G01V13/00
Inventor 李玉霞黄飞路涛李剑于国华张晗李亚敏李文博
Owner BC P INC CHINA NAT PETROLEUM CORP
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