Downhole tool head for releasing precipitated solids

摘要

The present invention relates to a downhole tool head (1) for mounting onto a downhole tool (10) for drilling in a formation downhole or for releasing precipitated solids (2), such as ice, scales or the like, in a cavity fluid in a pipeline, a casing (3), a well or any other cavity downhole. The downhole tool head comprises a hollow cylindrical body (4) with a circumferential wall (5) extending from a base part of the body, the circumferential wall having a circumferential rim (6) in its end opposite the base part. The circumferential rim (6) comprises a plurality of edges (8) for cutting, grinding, drilling and/or milling, and the base part has a plurality of through-going holes (9) for letting cavity fluid comprising precipitated solids pass the holes.

主权项

1. Downhole tool head for mounting onto a downhole tool to release precipitated solids in a cavity fluid in a pipeline, a casing, a well or any other cavity downhole, comprising:
a hollow cylindrical body with a circumferential wall extending from a base part of the body, the circumferential wall having a circumferential rim in an end opposite the base part, wherein the circumferential rim comprises a plurality of edges configured to cut, grind, drill or mill by way of rotation of the circumferential rim, wherein the base part has a plurality of through-holes configured to allow passage of cavity fluid comprising precipitated solids from within the hollow cylindrical body and through the through-holes, and wherein each of the through-holes has a cutting edge configured to cut precipitated solids from within the cylindrical body, and to divide the precipitated solids into several pieces, wherein the downhole tool is configured such that the precipitated solids are initially cut, ground, drilled or milled by the plurality of edges of the circumferential rim, and then released directly to the hollow cylindrical body and the cutting edges of the base part for further breakdown so that the precipitated solids are broken down to a size that passes by the tool after passing through the through-holes.