LWD Power Supply

A logging-while-drilling tool and power supply technology, which is applied in the direction of instruments, electrical components, circuit devices, etc., and can solve the problems of limited power supply of battery shorts, limited rated current, and inability to supply power.

Inactive Publication Date: 2017-09-19
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The logging while drilling tool cannot be powered by the cable like the wireline logging tool, it can only be powered by the battery nipple
[0003] At present, domestic LWD tools are still powered by high-temperature lithium batteries, and the rated current is very limited. In order to ensure the working time of LWD tools, it is necessary to connect multiple batteries in series to form battery sub-sections for power supply. However, due to the limitation of drill collar space, The power supply of the battery pup is limited, and it is necessary to design an energy-saving LWD power supply to prolong the working time of the LWD tool

Method used

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Embodiment Construction

[0020]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than 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 belong to the protection scope of the present invention.

[0021] Such as figure 1 As shown in , it is a structural schematic diagram of a power supply structure diagram of a logging while drilling tool provided by an embodiment of the present invention.

[0022] The LWD power supply 100 includes:

[0023] The digital power supply 101 is used to supply power to the digital circuits of the logging while drilling tool where the logging while drilling tool power supply 100 is located.

[0024] Furth...

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Abstract

An embodiment of the invention discloses a logging-while-drilling apparatus power source. The logging-while-drilling apparatus power source comprises a digital power source which is used for supplying power for a digital circuit of a logging-while-drilling apparatus on which the logging-while-drilling apparatus power source is arranged, a simulation power source which is used for supplying power for a simulation circuit of the logging-while-drilling apparatus, a high-voltage power source which is used for supplying power for a high-voltage transmission circuit of the logging-while-drilling apparatus and a controller which is used for respectively controlling whether the digital power source, the simulation power source and the high-voltage power source are in working states or not.

Description

technical field [0001] The invention relates to the technical field of logging-while-drilling tools, in particular to a power supply of logging-while-drilling tools. Background technique [0002] The logging while drilling tool measures the physical parameters of the formation while drilling, which can reduce the logging time and more truly reflect the geological characteristics of the original formation. At the same time, it can predict the formation information and reduce the uncertainty, which is conducive to timely and effective decision-making and processing, reducing Drilling risk. At present, this technology has become an important means to efficiently develop complex oil and gas reservoirs. The logging while drilling tool cannot be powered by the cable like the wireline logging tool, but can only be powered by the battery nipple. [0003] At present, domestic LWD tools are still powered by high-temperature lithium batteries, and the rated current is very limited. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/155H02M3/335
CPCH02J1/00H02J1/082H02M3/157H02M3/335
Inventor 张铮辛鹏来付欣贺洪斌
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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