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High temperature drilling electronics

A technology for electronic components and surface mounting, which is applied in the direction of circuit heating devices, printed circuits, printed circuits, etc., and can solve problems such as the loss of service life of electronic components

Active Publication Date: 2021-03-23
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to experience, for every 25°C increase in temperature, electronic components will lose 90% of their service life

Method used

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  • High temperature drilling electronics
  • High temperature drilling electronics
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Embodiment Construction

[0021] One or more specific embodiments of the present disclosure will be described below. In an effort to provide a concise description of these embodiments, not all features of an actual implementation may be described in the specification. It should be understood that in the development of any such actual implementation, such as in any engineering or design project, many implementation-specific decisions must be made to achieve the developer's specific goals, such as adhering to system-related and business-related constraints, which may vary by implementation. Furthermore, it should be appreciated that such development efforts might be complex and time consuming, but would nonetheless be a routine undertaking of design, manufacture, and tooling for those of ordinary skill having the benefit of this disclosure.

[0022] When introducing elements of various embodiments of the invention, the articles "a," "an," "the," and "said" are intended to mean that there are one or more...

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Abstract

A printed circuit board assembly (PCBA) for underground applications has a printed circuit board (PCB) and a plurality of electronic components mounted on the PCB. The PCB includes a polyimide substrate, lead-free surface finish, multiple traces, multiple surface mount pads, and multiple vertical interconnect channels. The ratio of the width of one of the plurality of surface mount pads to the width of the traces connected to it is 2 or less.

Description

technical field [0001] The present disclosure relates to electronics for high temperature drilling operations, and more particularly to printed circuit boards (PCBs) and printed circuit board assemblies (PCBAs) suitable for downhole environments. Background technique [0002] Modern oil and gas exploration takes place in complex geological environments. Drilling operations rely heavily on real-time information on the status of drilling tools and formation properties. This information can be obtained through the use of sensors and measurement while drilling (MWD) and logging while drilling (LWD) tools. While MWD refers to the measurement of the motion and position of the drilling assembly during the duration of drilling, while LWD is more concerned with the measurement of formation properties, they are used interchangeably in this disclosure. MWD / LWD tools are typically installed in drill collars within the drilling assembly (ie bottom hole assembly or BHA). [0003] Senso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02H05K1/03H05K1/11H05K3/22
CPCH05K1/0313H05K3/22H05K1/111H05K1/115H05K1/0203H05K2201/09227H05K2201/09427H05K1/0201H05K1/181H05K1/0346H05K2201/0154H05K3/244H05K3/282H05K2201/098Y02P70/50H05K1/0271H05K2201/09509H05K1/0353
Inventor 詹晟赵金海胡风涛郑和荣
Owner CHINA PETROLEUM & CHEM CORP
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