Wireline Fluid Blasting Tool and Method

摘要

A wireline deployed fluid blasting tool for removing obstructions from oil and gas wellbore tubing is disclosed. The tool has an inner tubular mandrel retaining a releasable outer sleeve creating an annular fluid passage in communication with fluid ejection ports. Resilient seals seal the annulus between the tool and the wellbore tubing allowing fluid pressure above the tool to advance the tool through the tubing. Fluid enters the annular fluid passage through fluid perforations in the outer sleeve to exit the fluid ejection ports to create a fluid blast to remove obstructions. The outer sleeve shifts along the inner mandrel by fluid pressure to open fluid inlet passages into the inner mandrel allowing fluid to enter and exit through the mandrel while bypassing the annular fluid passage and fluid ejection ports to facilitate pulling the tool from the tubing.

主权项

1. A wireline deployed fluid blasting tool comprising:
(a) a segment of production tubing; (b) a wireline cable; (c) a tubular mandrel having an upper end and a lower end, said upper end of said mandrel connected to said wireline cable and positioned in said segment of production tubing, said tubular mandrel having a central fluid passage in communication with upper fluid inlet ports and a fluid bypass outlet; (d) a tubular outer sleeve releasably mounted around said tubular mandrel creating an annular fluid passage, said outer sleeve having a plurality of fluid perforations and a plurality of fluid ejection ports, said fluid perforations and said fluid ejection ports in fluid communication with said annular fluid passage, said releaseably mounted outer sleeve restricting said fluid inlet ports of said tubular mandrel; (e) a resilient tubular seal fitted around said tubular outer sleeve, said seal sealing the annulus between said tubular outer sleeve and said segment of production tubing; (f) pressurized fluid within said segment of production tubing above said fluid blasting tool whereby the pressure of said pressurized fluid will engage said seal thereby moving said fluid blasting tool through said production tubing in advance of said wireline cable; (g) said pressurized fluid flowing through said annular fluid passage and said plurality of fluid ejection ports whereby said pressurize fluid is ejected; and (h) wherein said releaseably mounted outer sleeve is released in response to fluid pressure whereby said outer is shifted to open said upper fluid inlet ports of said tubular mandrel allowing said pressurized fluid to flow through said central fluid passage of said tubular mandrel to exit said fluid bypass outlet when said fluid blasting tool is pulled from said tubing by said wireline cable.