Restrictor ring bearing assembly

Abstract

The invention relates to a restrictor ring bearing assembly, which is an important part of a flow pipe assembly in a wireless measurement while drilling clinometers. The restrictor ring bearing assembly consists of a connecting sleeve, a wear-resistance ring and a locking sleeve; the wear-resistance ring is sleeved in a connecting sleeve; the locking sleeve is in threaded connection with the connecting sleeve; the locking sleeve fixes the wear-resistance ring in the connecting sleeve; adhesive is applied on the joining faces of the wear-resistance ring and the connecting sleeve; and a locking screw is arranged in a through hole in an outer wall for preventing the connecting sleeve from separating from the locking sleeve. The materials of the connecting sleeve and the locking sleeve are both 17-4PH stainless steel which is anti-corrosion and anti-scouring; and the material of the wear-resistance ring is YG8 hard alloy which has high strength and high wear resistance. The service life of the restrictor ring bearing assembly is 2 to 3 times higher than that of the conventional restrictor ring bearing assembly.

Description

technical field [0001] The invention relates to a current-limiting ring bearing assembly, which is a very important accessory of a flow pipe assembly of a wireless inclinometer while drilling, and belongs to the field of downhole equipment in the petroleum drilling industry. Background technique [0002] The function of the restrictor ring seat assembly is to install different types of restrictor rings in the restrictor ring seat according to the well conditions on site, and to control the flow of mud through the restrictor rings with different inner hole diameters to form pressure and push Mushroom head to make the pulse generator work. At present, there are two kinds of structures of current-limiting ring seat assemblies currently in use. The first type is integral structure, that is, steel parts are used as a whole, the material is 3Cr13 stainless steel, and a thin layer of hard alloy is sprayed on the flow surface, which is YG6. Basically washed out; the second is a sp...

AI Technical Summary

Problems solved by technology

The first type is integral structure, that is, steel parts are used as a whole, the material is 3Cr13 stainless steel, and a thin layer of hard alloy is sprayed on the flow surface, which is YG6. Basically washed out; the second is a split structure, that is, the current limiting ring seat is made of steel, the material is 3Cr13 stainless steel, the alloy wear-resistant ring of the over-current part is made of hard alloy, and the hard alloy is YG8. The steel parts of the bearing seat and the alloy wear-resistant ring are connected by pins, and the alloy wear-resistant ring is stressed during use, which causes the force on the pin to cause the joint of the pin to break, the current-limiting ring seat falls off, and the fallen alloy wear-resistant The ring smashes the pulse generator below, causing the whole set of pulse generator to be scrapped and causing losses

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