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API Downhole MWD LWD Measure While Drilling High accuracy

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Langfang Ouhang Technology Co., Ltd.

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MWD LWD Measure While Drilling

The MWD adopts mature and reliable positive mud pulse technology. It transmits stand pipe signals

and other data by radio on the ground. There is no need to lay out cables, which make it easy and

convenient for operation.

The mud pulse MWD adopts Bus technology. Natural gamma and Azimuth gamma are optional, and

then Depth system should also be used cooperatively to expand application range of the MWD.

Working Principle

The Pulser acquires related down-hole data, and the acquired data is encoded into certain series

data string via control unit. The data string controls the movement of electromagnetic valve, and the

circulating mud makes the main valve poppet move synchronously, thus, mud flow area between

the poppet and block ring is controlled. When the poppet is up, the mud in drill string passes

through the block ring smoothly; when the poppet is down, mud flow area reduces, and then a

positive mud pressure pulse is generated inside the drill string.

The pressure sensor on the mud pipeline acquires mud pressure signal with certain frequency and

transmits the signal wirelessly. Wireless transceiver connected with PC receives and

processes the pump pressure signal. The signal is decoded into data by DEES software and the

results are transmitted to driller's display wirelessly.

Factory view

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MWD LWD Measure While Drilling

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