Halliburton Energy Services, Inc.

Gregory B Chitwood

Bradley Leon Todd

Gary P Funkhouser

Robert S Taylor

Michael M Brezinski

Thomas Wayne Ray

John C Gano

Ralph Harvey Echols

Cynthia Strickland Tuckness

Marion Dewey Kilgore

Ronald J Powell

Jody Ray McGlothen

Paul I Herman

Alex Procyk

Roger Lynn Schultz

William David Henderson

Michael Wayne Sanders

David Joe Steele

Philip D Nguyen

Jimmie Dean Weaver, Jr

Syed Hamid

Johnny A Barton

Perry C Shy

Timothy Edward Harms

Joseph L Pearce

Jackie M LaFontaine

R Ashley Donaldson

Patrick W Rice

The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the tubing, the seal is deployed to form an annular isolator. An inflatable element carried on the tubing may be inflated with a fluid carried in the tubing and forced into the inflatable element during expansion of the tubing. Reactive chemicals may be carried in the tubing and injected into the annulus to react with each other and ambient fluids to increase in volume and harden into an annular seal. An elastomeric sleeve, ring or band carried on the tubing may be expanded into contact with a borehole wall and may have its radial dimension increased in conjunction with tubing expansion to form an annular isolator.

Annular isolators for expandable tubulars in wellbores

An expandable sand control screen () that is positionable within a wellbore comprises a fluid permeable generally tubular member () that is expanded downhole. A filtering assembly is disposed exteriorly of the generally tubular member (). The filtering assembly includes a filter medium () that prevents the flow of particulate material of a predetermined size therethrough but allows the flow of production fluids therethrough. The filtering assembly also includes a compliable member () that has a thickness that is radially variable downhole. During or after expansion of the expandable sand control screen (), the radial variability of the thickness of the compliable member () allows the expandable sand control screen () to comply with any irregularities in the wellbore profile, thereby preventing any void regions between the expandable sand control screen () and the wellbore.

Expandable sand control screen and method for use of same

A screen or filter assembly is described as well as improved methods of affixing such assemblies to a portion of an oil or gas production assembly. A nonrigid attachment for reversibly securing a tubular screen to a portion of a production string is disclosed which significantly reduces the risk of the connection between the screen and the production nipple from being broken. In a preferred embodiment, an end cap is described having a projecting lip which secures one end of the screen body to a perforated sub. A removable threaded retaining sleeve is used to secure the other end of the screen body to the perforated sub. A compression ring is associated with the threaded connector to assist in securing the screen body end. A pair of deformable rings are placed adjacent each of the screen body ends to absorb service loads. The screen assembly may be subjected to operational tensile and compressive stresses and thermal expansions and contractions without significant risk of connection failure.

Screen assemblies and methods of securing screens

Growing community of inventors

Dallas, TX, United States of America

Gregory B Chitwood