Induced electric field well logger

A technology of induction electric field and logging instrument, which is applied in the field of detection wells, can solve the problems that the test accuracy and detection depth cannot be satisfied, and the deep formation cannot be accurately tested, and achieves the effect of wide receiving range

Active Publication Date: 2019-11-05
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0002] Induction logging is a logging method that uses the principle of electromagnetic induction to obtain formation conductivity. It is a relatively mature testing method in the modern petroleum exploration industry. Induction logging can realize high-precision imaging of formations near the wellbore, but for of deep formations cannot be accurately tested
For the conductivity test of deep formations, the remote detection electromagnetic wave technology is mainly used, but the test accuracy and detection depth are far from meeting the current logging needs

Method used

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Embodiment Construction

[0031] 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.

[0032] 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 discloses an induced electric field well logger and belongs to the technical field of detection wells. The induced electric field well logger comprises an emitting system, a collecting and receiving system and a signal processing unit. The emitting system is used for emitting electromagnetic signals, the collecting and receiving system is used for collecting secondary induction fieldsignals passing a stratum, and the signal processing unit is used for receiving and collecting the signals collected by the collecting and receiving system to output all-around conductivity of the stratum of a preset depth, wherein the preset depth of the stratum is 0-30 m. The induced electric field well logger not only can achieve high precision imaging of a near stratum, but also can achieve high precision imaging of a far stratum.

Description

technical field [0001] The invention belongs to the technical field of detection wells, in particular to an induction electric field logging instrument. Background technique [0002] Induction logging is a logging method that uses the principle of electromagnetic induction to obtain formation conductivity. It is a relatively mature testing method in the modern petroleum exploration industry. Induction logging can realize high-precision imaging of formations near the wellbore, but for The deep formation cannot be accurately tested. For the conductivity test of deep formations, the remote detection electromagnetic wave technology is mainly used, but the test accuracy and detection depth are far from meeting the current logging requirements. [0003] Induction electric field logging is a brand-new logging method designed to make up for the above defects. It can realize all-round testing of 0-30m deep formations. It is an important means to detect oil and gas resources. It also...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B47/00E21B47/12
CPCE21B49/00E21B47/00E21B47/12
Inventor 王水航陈涛贺秋利宋青山陈章龙范晓文史超党峰
Owner BC P INC CHINA NAT PETROLEUM CORP
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