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Drill-o-graph

A mud logging tool and drilling time technology, applied in the field of intelligent instruments and meters, to achieve the effect of accurate recording information, low development difficulty and perfect functions

Inactive Publication Date: 2010-12-29
INNER MONGOLIA FIRST MACHINERY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, there is no well-developed mud logging equipment in our country.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0017] Referring to the accompanying drawings, in terms of hardware, the instrument mainly includes MCU and external Flash unit, as well as micro-printer interface circuit, 6×5 matrix keyboard interface unit, electronic alarm function module, 16-bit 7-segment digital tube display unit, power circuit module, RS232 communication unit, winch sensor signal interface circuit, mud sensor signal interface unit, suspension weight sensor signal interface unit, manual stop drilling interruption signal generation circuit, manual pump stop interruption signal generation circuit, manual single connection interruption signal generation circuit, manual winch Forward and reverse jump interrupt signal generation circuit. The main control unit (MCU) adopts ATmega128 high-grade single-chip microcomputer, among which the micro-printer interface, keyboard interface, and digital tube interface are all expanded into the external I / O port of MCU through 138 decoder and 373 latch. The read and write o...

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Abstract

The invention relates to a drill-o-graph, which consists of a master control unit MCU, a rechargeable storage regulated power supply unit, an external sensor, a keyboard port, an electric warning module, a display screen, a communication unit, a sludge sensor signal interface unit, a weight transducer signal interface unit, a manual drill stopping interrupt signal generating circuit, a pump stopping interrupt signal generating circuit, a connection making interrupt signal generating circuit and a positive and negative rotation interrupt signal generating circuit. The drill-o-graph is characterized in that the keyboard port is extended into an external I / O port of the MCU through a 138 decoder and a 373 latch; ATmega128 controls the I / O port by reading and writing I / O; a winch sensor signal interface circuit, the sludge sensor signal interface unit, the weight transducer signal interface unit, the manual drill stopping interrupt signal generating circuit, the pump stopping interrupt signal generating circuit, the connection making interrupt signal generating circuit and the positive and negative rotation interrupt signal generating circuit realize signal detection by using an ATmega128 external interrupt port; an external interrupt signal of the external sensor unit performs signal shaping by adopting LM111; and LM324 performs second order Butterworth filter, and is connected to an interrupt pin of the MCU through a photoelectric coupler. The drill-o-graph has the advantages of complete functions, accurate recorded information and relatively low developing difficulty.

Description

technical field [0001] The invention relates to a drilling logging instrument, which belongs to the technical field of intelligent instruments. Background technique [0002] Drilling time logging instrument is an instrument that assists mud loggers to record the corresponding relationship between geological soil samples and corresponding formation depths during drilling. In the process of oil drilling, every time the drill bit drills into a calibrated unit depth of one meter, soil samples at that depth need to be sampled for relevant geological analysts to analyze the oil content of the soil. The sampling method is to calculate the sand return time of rock cutting (that is, the time for rock cutting to return to the ground) with reference to the depth of drilling and the output flow rate of mud pump. However, this process will cause state interruption due to various reasons, which will affect the accuracy of sand return time of rock cutting. Therefore, factors such as stop...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B49/00E21B47/20
Inventor 杨建文
Owner INNER MONGOLIA FIRST MACHINERY GRP
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