Device and method for measuring return flow of L-shaped communicating pipe drilling liquid
The technology of a flow measurement device and measurement method, which is applied in the field of L-shaped communicating pipe drilling fluid return flow measurement device, can solve problems such as inaccurate measurement, achieve the effects of improving detection accuracy, avoiding measurement difficulties, and preventing blowout accidents
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[0039] Below in conjunction with accompanying drawing, the present invention will be further described:
[0040] Such as figure 1 As shown, the L-shaped connecting pipe drilling fluid return flow measuring device of the present invention consists of an optical liquid level sensor 9, an L-shaped connecting pipe 4, a trumpet pipe 11, an L-shaped connecting pipe bracket 8, a signal conditioning and preprocessing device 15, and a data The acquisition unit 16, the client computer 17, and the sound and light alarm device are composed. At present, when the drilling fluid is openly circulated at the oil drilling site, the return flow measurement is mostly installed at the wellhead with the horn tube 11 and the annular blowout preventer 1, and the horn tube 11 and the annular blowout preventer 1 are below the drill floor plane, the kelly 10 passes through the horn tube 11, and the horn tube 11 is connected to a rectangular groove, and the increase or decrease of the total amount of liq...
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