Power supply nipple and LWD (Logging While Drilling) instrument

A logging-while-drilling, sub-section technology, applied in current collectors, measurement, electric vehicles, etc., can solve the problems of different specifications and structures of lithium batteries, different installation methods, and inability to be universal.

Inactive Publication Date: 2017-01-25
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different specifications and structures of lithium batteries used in various instruments and different installation methods, they cannot be used universally, which greatly increases the cost

Method used

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  • Power supply nipple and LWD (Logging While Drilling) instrument

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of this document clearer, the embodiments of this document will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0022] In the following description, a lot of specific details are set forth in order to fully understand this article, but this article can also be implemented in other ways than described here, therefore, the protection scope of this article is not limited by the specific embodiments disclosed below .

[0023] The power supply sub and downhole logging instrument of some embodiments of this paper will be described below with reference to the accompanying drawings.

[0024] This article provides power supply subsections, such as figure 1 As shown, it is used for the LWD instrument, including...

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Abstract

The invention discloses a power supply nipple and an LWD (Logging While Drilling) instrument. The power supply nipple comprises: a cylindrical housing, a battery skeleton, a battery, a turbine generator, a control unit, an upper flow passage converter and a lower flow passage converter, wherein the battery skeleton is mounted on the inner side wall face of the housing; a closed cavity is formed in a surrounding mode between the outer side wall face of the battery skeleton and the inner side wall face of the housing; the cavity is also filled with a medium for protecting the battery; a mud flow passage is formed in a surrounding mode between the inner side wall face of the battery skeleton and the inner side wall face of the housing outside the battery skeleton; the battery is mounted in the cavity; the turbine generator is mounted in the housing; a working flow passage inside the turbine generator is communicated with the mud flow passage; the control unit is mounted on the housing and is electrically connected with the battery and the turbine generator; the upper flow passage converter is mounted at the upper end of the housing and is communicated with the mud flow passage; the lower flow passage converter is mounted at the lower end of the housing and is communicated with the mud flow passage. The power supply nipple integrates the battery with the turbine generator, so that uniform power supply of subsurface equipment is implemented.

Description

technical field [0001] This article involves but is not limited to logging while drilling technology, especially a power supply sub and a logging while drilling tool including the power supply sub. Background technique [0002] Downhole turbine generator power supply and downhole high temperature lithium battery power supply are commonly used power supply methods for logging while drilling tools. Turbine generators have a long service life and are more suitable for underground high-temperature environments, so they have better development prospects. However, because the turbine generator is susceptible to mud flow, the quality of its power generation is much lower than that of the battery power supply. Therefore, it is still impossible to completely replace the underground high-temperature lithium battery. [0003] The environment of high temperature, high pressure and strong vibration underground makes the safety of lithium batteries more prominent. There have been cases...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00H02J7/14
CPCE21B47/00H02J7/14
Inventor 鲍忠利于会媛卢华涛尚修盛黄琳牛德成窦锦爱
Owner CHINA NAT OFFSHORE OIL CORP
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