Online filtering device of drilling mud

A drilling mud and filtering device technology, applied in the direction of filtration separation, filtration circuit, separation method, etc., can solve the problems of poor controllability, unsatisfactory filtration effect, and inability to realize the coordination of ion online devices, etc., to achieve good controllability and wide The effect of applying space

Inactive Publication Date: 2015-07-22
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
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  • Claims
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Problems solved by technology

The existing drilling mud filtering device has poor controllability and unsatisfa

Method used

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  • Online filtering device of drilling mud
  • Online filtering device of drilling mud
  • Online filtering device of drilling mud

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Embodiment Construction

[0039] combined with Figures 1 to 7 The specific embodiment of the present invention is described further:

[0040] An online drilling mud filtering device includes a self-priming pump, a filter holder, a production fluid collecting device, and a PLC controller. The self-priming pump is connected to the inlet of the filter holder, the filter holder is equipped with a filter backwashing device, and the outlet of the filter holder is connected to the production fluid collection device. The self-priming pump is connected to the drilling mud liquid sampling device, and the self-priming pump is used for automatic sampling of drilling mud for the drilling mud online filtering device. The filter holder holds multiple sets of filter sheets with different filtration precision from the inlet to the outlet, so as to realize the graded filtration of impurities during the drilling mud filtration process. The filter backwashing device is used to clean the residual mud in the pipe inside ...

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Abstract

The invention discloses an online filtering device of drilling mud. The online filtering device comprises a self-priming pump, a filter holder, a produced fluid collecting device and a PLC controller, wherein the self-priming pump is connected with an inlet of the filter holder; a filter reverse-cleaning device sleeves the filter holder; an outlet of the filter holder is connected with the produced fluid collecting device; the PLC controller is communicated with and controls the self-priming pump, the filter holder, the produced fluid collecting device and the filter reverse-cleaning device respectively through a relay; the PLC controller is further connected with a human-machine interface for artificially controlling the operation state of the online filtering device of drilling mud. The online filtering device can sample automatically, continuously filter fluids in a well in an online manner, collect the filtrate and prepare for the subsequent online monitoring of ions, and has good controllability and broad application space.

Description

technical field [0001] The invention relates to an online drilling mud filtering device, in particular to a PLC online controlled drilling mud classification filtering device. Background technique [0002] Drilling mud is recognized as the blood of oilfield drilling and plays a very important role in drilling operations. The filtration and ion detection of drilling mud are the key to ensure the effectiveness, recycling and safe disposal of drilling mud. The existing drilling mud filtering device has poor controllability, unsatisfactory filtering effect, and cannot cooperate with the subsequent ion on-line device. According to the analysis of the impurity particles contained in the drilling fluid, the diameter of the impurity particles to be filtered out by the designed filter device is usually larger than 10-4mm, and the particles smaller than this size are exactly the ions that need to be further analyzed and measured. Therefore, the on-line controllable filtration device...

Claims

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Application Information

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IPC IPC(8): G01N1/34B01D36/00
Inventor 孙建孟刘尊年刘宝双李召成
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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