초록 ▼

A downhole cutting separator is disclosed. The separator can be mounted anywhere on the drillstring. The separator employs a seal which directs the normally circulating fluid during the cutting or milling operation in through an internal passage in the tool. The cutting-laden fluid passes through a

A downhole cutting separator is disclosed. The separator can be mounted anywhere on the drillstring. The separator employs a seal which directs the normally circulating fluid during the cutting or milling operation in through an internal passage in the tool. The cutting-laden fluid passes through a slotted liner where the cuttings drop out and are collected in a compartment within the tool. The circulating fluid exits the tool into the annulus. The tools can be used in series so that the lowermost tool takes out the large cuttings, while an upper tool takes out finer cuttings. Provisions can be made to bypass the tool should it become plugged with cuttings by using rupture discs or movable sleeves responsive to pressure differential. A portion of the body assembly can be magnetic to further assist in removal of cuttings as the circulating flow passes through the tool.

대표청구항 ▼

[ I claim:] [1.] A downhole cutting separator, comprising:a body having a bore therethrough to accommodate flow downhole;an outer housing on the body defining a return flowpath uphole;a fluid restrictor on said outer housing to restrict fluid flow downhole and thereby direct returning fluid with cut

[ I claim:] [1.] A downhole cutting separator, comprising:a body having a bore therethrough to accommodate flow downhole;an outer housing on the body defining a return flowpath uphole;a fluid restrictor on said outer housing to restrict fluid flow downhole and thereby direct returning fluid with cuttings into said return flowpath;a retaining device in said return flowpath further comprising a receptacle out of said return flowpath in which said cuttings can collect and to allow return flow uphole to bypass said collected cuttings.