Weathered crust recognition device

An identification device and weathering crust technology, which is applied in the field of petroleum exploration, can solve the problems of identification of unused lithology, inconvenient use, and restrictions on wide application

Inactive Publication Date: 2014-06-18
SHANGHAI GASOLINEEUM & CHEM EQUIP +1
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Problems solved by technology

Because these analysis tools are embedded in the top system of the drill string through a "measurement nipple", it is very inconvenient to use, and the measurement range of the signal is generally within 300 Hz, mainly for dynamic behavior measurement and fault analysis of the drill string. Such as drill bit mud bag, sticky card, etc., which limit their wide application
[0004] The above research mainly analyzes the working state of the drill string, and is not used for the identification of lithology

Method used

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Embodiment Construction

[0020] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a kind of identification device of weathering crust comprises: signal collector 1, and it is installed on the top of drill string, collects the vibrating sound wave that drill bit breaks rock and produces (referring to figure 2 ); filter 2, which is connected to the signal collector 1; wireless transmitter 3, which is connected to the filter 2, and transmits the vibration sound wave filtered by the filter 2; wireless receiver 4, which passes through the wireless transmitter 3 The electromagnetic wave realizes wireless communication; the wireless receiver 4 is connected with an external computer 5; the computer 5 generates a vibroacoustic spectrum, and identifies the geological layered weathering crust according to the generated vibroacoustic spectrum. The signal collector 1 is ...

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Abstract

The invention discloses a weathered crust recognition device which comprises a signal collector, a filter, a wireless emitter and a wireless receiver. The signal collector is installed at the top of a drill column and used for collecting vibration sound waves generated when rock is broken by a drill bit. The filter is connected with the signal collector. The wireless emitter is connected with the filter and used for emitting the vibration sound waves filtered by the filter. Wireless communication between the wireless receiver and the wireless emitter is achieved through electromagnetic waves. The wireless receiver is connected with an external computer. The computer generates vibration sound wave frequency spectrum. The weathered crust recognition device can effectively extract the characteristics of vibration sound wave frequencies of the upper formation lithology and the lower formation lithology of weathered crust.

Description

technical field [0001] The invention relates to the field of oil detection, in particular to a weathering crust identification device. Background technique [0002] In 1960, the French company Elf used the pup joint installed on the top of the drill string for the first time to measure the vibration law of the drill string. This wireless transmission method can only be completed through the analog FM (frequency modulation) and amplitude modulation (AM) methods of the signal. Since there was no digital communication method in that era, the signal was easily interfered by the field operation signal, and the product lacked credibility. , can not effectively solve practical problems and give up the development of this technology. [0003] In 1984, the Arco Company of the United States used the pup joint installed on the top of the drill string to collect 0-300Hz signals to study the vibration law of the drill string. In 1986, the French Elf company used the pup joint installed...

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Application Information

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IPC IPC(8): E21B49/00E21B47/14
Inventor 杨文飞史鸿祥雷军杨靖谢平肖雅楼王振飞
Owner SHANGHAI GASOLINEEUM & CHEM EQUIP
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