Self-cleaning filtering mechanism of wireless inclinometer while drilling and wireless inclinometer while drilling

Abstract

The invention discloses a self-cleaning filtering mechanism of a wireless inclinometer while drilling, the self-cleaning filtering mechanism comprises a supporting base, a filtering cylinder and a connecting shaft, a central through hole is formed in the supporting base, a filtering cavity is formed in the filtering cylinder, the top of the filtering cylinder is sealed, and the bottom of the filtering cylinder is connected with the supporting base; the connecting shaft penetrates through the supporting seat and extends to the top of the filter cavity of the filter cylinder, and the central through hole and the filter cavity are both in clearance fit with the connecting shaft; an axial strip-shaped filter groove is formed in the top of the filter cylinder, a flow channel axially extending to the lower end of the connecting shaft is formed in the connecting shaft, and the flow channel is communicated with the filter cavity; blades are arranged on the outer wall of the connecting shaft, located in the strip-shaped filter grooves and in clearance fit with the strip-shaped filter grooves. According to the filtering mechanism, the interior of the strip-shaped filtering groove can be cleaned away, impurities in drilling fluid are prevented from blocking the strip-shaped filtering grooves, and the using reliability of the filtering mechanism of the wireless inclinometer while drillingis improved.

Description

Technical field [0001] The invention relates to the field of petroleum drilling equipment, in particular to a self-cleaning filter mechanism of a wireless inclinometer while drilling and a wireless inclinometer while drilling. Background technique [0002] Currently, wireless inclinometers while drilling have been widely used in the oil drilling and drilling industry. The filter screen of the wireless inclinometer is used as a component to filter impurities in the drilling fluid flowing into the pulse generator of the wireless inclinometer. The reliability of its use has become a concern of oilfield users. Generally, the filter screen of the wireless inclinometer while drilling uses slotting and opening to filter impurities in the drilling fluid, and has no active cleaning function. During use, the impurities in the drilling fluid will slowly block the gaps in the filter body, especially When the content of impurities in the drilling fluid is high, the filter screen is quickly b...

AI Technical Summary

Problems solved by technology

Ordinary wireless MWD inclinometer filters use grooves and holes to filter impurities in the drilling fluid, and have no active cleaning function. During use, impurities in the drilling fluid will slowly block the gaps in the filter body, especially When the content of impurities in the drilling fluid is high, the filter screen will be blocked quickly, so that the wireless MWD inclinometer cannot work normally

Images