US 2019/0153818 A1Published application

Locking ring system for use in fracking operations

AssigneeSc Asset Corporation

InventorSean P. Campbell

Life of this patent

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Abstract

A sliding valve for opening one or more fluid ports in a piping string, having a valve body and a sliding sleeve in a longitudinal bore thereof. The valve body has one or more fluid ports in an uphole portion thereof. The sliding sleeve is movable in the valve body between an uphole closed position closing the one or more fluid ports and a downhole open position opening the ports. The sliding sleeve has a longitudinal bore for receiving a collet, and/or a stop ring and/or a protective sleeve. The stop ring forms a stop shoulder for preventing downhole movement of the collet relative to the sliding sleeve. The protective sleeve presents ingress of cement or detritus into an annular region between the bore of the valve body and the sliding sleeve thereby ensuring the sliding sleeve is free to move so as to open said fluid ports.

Claims17

Dependent claims

A sliding valve for opening one or more fluid ports in a production string, comprising:

a valve body having a longitudinal bore, the valve body comprising said one or more fluid ports on an uphole portion of the sidewall thereof;
and
a sliding sleeve received in the longitudinal bore of the valve body and movable between an uphole closed position closing the one or more fluid ports and a downhole open position opening the one or more fluid ports;
wherein the sliding sleeve comprises:
a sleeve body having a longitudinal bore;
a stop shoulder for preventing a collet in the longitudinal bore of the sliding sleeve from moving downhole;
and
a protection sleeve downhole to the sleeve body;
and
wherein the stop shoulder has a first acute angle with respect to a longitudinal axis of the sliding valve such that an inner edge of said stop shoulder is situated more uphole than an outer edge of said stop shoulder;
wherein at least a coupling portion of the protection sleeve is received in the sleeve body for coupling the protection sleeve to the sleeve body;
wherein at least when the sliding sleeve is at the closed position, the protection sleeve and the valve body form an annulus therebetween;
and
wherein the protection sleeve isolates the annulus from the longitudinal bore of the valve body.

11 more elements

A sliding valve for opening one or more fluid ports in a production string, comprising:

a valve body having a longitudinal bore, the valve body comprising said one or more fluid ports on an uphole portion thereof and a ratchet structure on an inner surface of a downhole portion thereof;
and
a sliding sleeve received in the longitudinal bore of the valve body and movable between an uphole closed position closing the one or more fluid ports and a downhole open position opening the one or more fluid ports;
wherein the sliding sleeve comprises:
a sleeve body having a longitudinal bore, the sleeve body comprising a ratchet structure on an outer surface of a downhole portion thereof, the ratchet structure of the sleeve body engageable with the ratchet structure of the valve body for locking the sliding sleeve when the sliding sleeve is at the downhole open position;
and
a protection sleeve downhole to the sleeve body, at least a coupling portion of the protection sleeve received by the sleeve body for coupling the protection sleeve to the sleeve body;
wherein at least when the sliding sleeve is at the closed position, the protection sleeve and the valve body form an annulus therebetween;
and
wherein the protection sleeve substantially overlays the annulus from the longitudinal bore of the valve body.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/256,446Filed 24 Jan 2019
Priority: 21 Nov 2017
Published: 23 May 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E21B 34/103
With means for locking the closing element in open or closed position: with a shear pin
E21B 34/142
Operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools: unsupported or free-falling elements, e.g. balls, plugs,…
E21B 43/26
Methods for stimulating production: by forming crevices or fractures
E21B 2200/06
Special features related to earth drilling for obtaining oil, gas or water: sleeve valves

Family

Application15/820,359Continuation · filed 21 Nov 2017
Application16/256,446Continuation
US 10,519,748 B2Related patent
US 10,605,050 B2Related patent
US 2019/0153817 A1Published application
US 2019/0153818 A1This patent

From the US filing history. Foreign family members aren’t listed.

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