Browse Prior Art Database

Multi-position Sleeve for Perforating, Fracturing and Sand Control

IP.com Disclosure Number: IPCOM000198655D
Publication Date: 2010-Aug-11
Document File: 1 page(s) / 22K

Publishing Venue

The IP.com Prior Art Database

Abstract

This invention provides a sleeve that has jet perforating, hydraulic fracturing and sand control functions in one tool. As showed in figure 1 of the attachment "multi-position_frac_sleeve.doc", the sleeve consists of a housing and spring loaded insert. Through the housing, there are nozzles, frac ports and ports filled with filtration material built in sequence from the top end. The insert has two flow ports which are straddled by seals. The insert also has a build-in collet finger and a ball seat on its ID. In the run-in position insert flow ports are isolated from the openings through the housing by the seals. To start the operation, a ball is dropped and lands on the ball seat, pumping at the surface compresses the spring and shifts the insert. Shear screws can be used to help the upper flow ports in the insert to align with the nozzles. In this position jet through the nozzles can perforate through casing and /or formation to initiate crack, and the lower insert ports are still isolated.

This text was extracted from a Microsoft Word document.
This is the abbreviated version, containing approximately 100% of the total text.

This invention provides a sleeve that has jet perforating, hydraulic fracturing and sand control functions in one tool. As showed in figure 1 of the attachment "multi-position_frac_sleeve.doc", the sleeve consists of a housing and spring loaded insert. Through the housing, there are nozzles, frac ports and ports filled with filtration material built in sequence from the top end. The insert has two flow ports which are straddled by seals. The insert also has a build-in collet finger and a ball seat on its ID. In the run-in position insert flow ports are isolated from the openings through the housing by the seals. To start the operation, a ball is dropped and lands on the ball seat, pumping at the surface compresses the spring and shifts the insert. Shear screws can be used to help the upper flow ports in the insert to align with the nozzles. In this position jet through the nozzles can perforate through casing and /or formation to initiate crack, and the lower insert ports are still isolated.