- Email: [email protected]
Sealing annular gaps in a well
FEATURE/PATENTS The research project at the Institute of Machine Components, at the University of Stuttgart, has not been completed. To understand the opening of the gap is one of the main targets of further research. In this context, the influence of a small imbalance of the shaft on the opening of the gap will be considered. Furthermore, re-lubrication, from the perspective of the seal and the controlled deposition of grease, will be investigated, the design rules will be checked for vertical shaft alignment and the necessary installation space will be optimised in order to meet specific design requirements.
References 7. Kümmel, J., ‘Fettgefüllte Berührungsfreie Wellendichtungen. Berührungsfreie Wellendichtugen mit Fettfüllung zur Schmutzabdichtung. Abschlussbericht’,
PATENTS Anchor-shaped connector for an oil seal Applicant: Environmental Gasket Co Ltd, China An anchor-shaped connector for an oil seal forms the subject of this patent. It comprises an embedded portion and a groove matching the shape of the embedded portion. The latter is anchor shaped, and the angle between the anchor hook and the anchor rod is less than 90°. The connector employs this anchor-shaped structure in such a way that the embedded piece is not able to disengage in the circumferential direction of a ring after being located into the groove, thus performing reliable anchoring and permanent locking functions. This also avoids connector looseness caused by repeated use – improving the sealing effect, reducing the material flexibility requirement of the split oil seal and enabling it to be used in a wide range of applications. Patent number: WO/2014/173005 Inventors: J. Zhao, J. Zhang and F. Yang Publication date: 30 October 2014
Magnetic seal for a mixing apparatus Applicant: B.W. Soeteman Bv, The Netherlands This invention relates to an apparatus for mixing products, such as a mixer or blender, which is used, in particular, to mix food products or 12
Sealing Technology
FKM, Forschungsvorhaben Nr. 287, Heft 311, Frankfurt/Main, Germany, 2011. 8. Fritz, E., Haas, W. and Müller, H.K., ‘Berührungsfreie Spindelabdichtung im Werkzeugmaschinenbau: Konstruktionsrichtlinien und Lösungskatalog’, 39, Berichte aus dem Institut für Maschinenelemente, Institut für Maschinenelemente, Stuttgart, Germany, 1991 (ISBN 3-921920-39-6). 9. Baart, P., ‘Grease Lubrication Mechanisms in Bearing Seals’, (doctoral thesis) 2011, Universitetstryckeriet Luleå, Sweden (ISBN 978-91-7439-299-9). Contact: Dipl.-Ing. Florian Bosch, Institute of Machine Components, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany. Tel +49 711 685 66182, Fax: +49 711 685 66319, Email: [email protected], Web: www.ima.uni-stuttgart.de
chemicals. It has a shell with an opening. A “closure” is arranged on this opening and a seal is provided between the shell and closure. For the addition or removal of products, inspecting the mixing process, and cleaning and maintenance purposes, the apparatus usually has openings that are closed by doors and windows, and are locked during operation. The objective of this invention is to create an apparatus, suited to mixing food products or fine chemicals, which allows for better hygiene conditions and/ or reduces cross-contamination. According to the inventor, this is achieved by using a magnetic seal. Patent number: WO/2014/173890 Inventor: B. Soeteman Publication date: 30 October 2014
Seal for a wax actuator with a high cycle life Applicant: Illinois Tool Works Inc, USA A seal assembly is described for a wax motor, or the like. The elastomeric seal fits against an actuator shaft. In addition, the shaft may slide through the elastomeric seal. Mould flash regions are displaced from the contact area between the shaft and elastomeric seal – significantly increasing the latter’s service life. Patent number: WO/2014/178969 Inventors: R.S. McDonald and B.A. Stelloh Publication date: 6 November 2014
Sealing annular gaps in a well Applicant: Halliburton Energy Services Inc, USA
This feature article is based on a paper entitled ‘Sealing of lubricating grease without friction with non-contacting sealing systems’ that was presented at the 13th EDF–Pprime workshop, which was held in Futuroscope Chasseneuil, France, on 2 October 2014. For further information on this conference, contact: 13th EDF–Pprime workshop: ‘Energy Saving in Seals’, Nöel Brunetière, Institut P’, CNRS – Université de Poitiers – ENSMA, UPR 3346, Département GMSC, SP2MI, Bd Marie et Pierre Curie, BP 30179, F86962 Futuroscope, Chasseneuil Cedex, France. Tel: +33 5 49 49 65 31, Email: Noel. [email protected] or Email: [email protected], Web: http:// edf-pprime-2014.sciencesconf.org. Also see ‘Plenty of interesting new topics at October conferences’, Sealing Technology December 2014 pp. 9–12.
This invention concerns a well tool for sealing against a wall of a well. It incorporates an elongate mandrel that is encircled by a seal assembly that can change between an unset state and an axially compressed set state. The seal assembly includes an annular elastomer element configured to radially deform when in contact with the wall of the well in the set state. An annular anti-extrusion ring is included to compress the seal element and form a containing space, with a garter spring embedded in the seal element. The garter spring is embedded in the seal element adjacent to the axial end of the seal element and configured to span the gap between the anti-extrusion ring and the wall of the well in the set state. The containing space prevents the seal element from excessive deformation. Patent number: WO/2014/178866 Inventor: G.E. Farquhar Publication date: 6 November 2014
Elastomeric seal Applicant: FMC Kongsberg Subsea As, Norway The objective of this invention is to develop an improved sealing technology that can be used in an environment that is at an extremely low temperature, whilst not compromising the required aggressive fluid resistance. In cold climates, elastomeric seals used in pressure-containment equipment contract with a decrease in temperature, and might lose interference with a sealed counterpart, which eventually could lead to a leak in the system. The solution described in this patent involves seals made from a composite material comprising an elastomeric polymer and a negative thermal expansion
October 2015
References 7. Kümmel, J., ‘Fettgefüllte Berührungsfreie Wellendichtungen. Berührungsfreie Wellendichtugen mit Fettfüllung zur Schmutzabdichtung. Abschlussbericht’,
PATENTS Anchor-shaped connector for an oil seal Applicant: Environmental Gasket Co Ltd, China An anchor-shaped connector for an oil seal forms the subject of this patent. It comprises an embedded portion and a groove matching the shape of the embedded portion. The latter is anchor shaped, and the angle between the anchor hook and the anchor rod is less than 90°. The connector employs this anchor-shaped structure in such a way that the embedded piece is not able to disengage in the circumferential direction of a ring after being located into the groove, thus performing reliable anchoring and permanent locking functions. This also avoids connector looseness caused by repeated use – improving the sealing effect, reducing the material flexibility requirement of the split oil seal and enabling it to be used in a wide range of applications. Patent number: WO/2014/173005 Inventors: J. Zhao, J. Zhang and F. Yang Publication date: 30 October 2014
Magnetic seal for a mixing apparatus Applicant: B.W. Soeteman Bv, The Netherlands This invention relates to an apparatus for mixing products, such as a mixer or blender, which is used, in particular, to mix food products or 12
Sealing Technology
FKM, Forschungsvorhaben Nr. 287, Heft 311, Frankfurt/Main, Germany, 2011. 8. Fritz, E., Haas, W. and Müller, H.K., ‘Berührungsfreie Spindelabdichtung im Werkzeugmaschinenbau: Konstruktionsrichtlinien und Lösungskatalog’, 39, Berichte aus dem Institut für Maschinenelemente, Institut für Maschinenelemente, Stuttgart, Germany, 1991 (ISBN 3-921920-39-6). 9. Baart, P., ‘Grease Lubrication Mechanisms in Bearing Seals’, (doctoral thesis) 2011, Universitetstryckeriet Luleå, Sweden (ISBN 978-91-7439-299-9). Contact: Dipl.-Ing. Florian Bosch, Institute of Machine Components, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany. Tel +49 711 685 66182, Fax: +49 711 685 66319, Email: [email protected], Web: www.ima.uni-stuttgart.de
chemicals. It has a shell with an opening. A “closure” is arranged on this opening and a seal is provided between the shell and closure. For the addition or removal of products, inspecting the mixing process, and cleaning and maintenance purposes, the apparatus usually has openings that are closed by doors and windows, and are locked during operation. The objective of this invention is to create an apparatus, suited to mixing food products or fine chemicals, which allows for better hygiene conditions and/ or reduces cross-contamination. According to the inventor, this is achieved by using a magnetic seal. Patent number: WO/2014/173890 Inventor: B. Soeteman Publication date: 30 October 2014
Seal for a wax actuator with a high cycle life Applicant: Illinois Tool Works Inc, USA A seal assembly is described for a wax motor, or the like. The elastomeric seal fits against an actuator shaft. In addition, the shaft may slide through the elastomeric seal. Mould flash regions are displaced from the contact area between the shaft and elastomeric seal – significantly increasing the latter’s service life. Patent number: WO/2014/178969 Inventors: R.S. McDonald and B.A. Stelloh Publication date: 6 November 2014
Sealing annular gaps in a well Applicant: Halliburton Energy Services Inc, USA
This feature article is based on a paper entitled ‘Sealing of lubricating grease without friction with non-contacting sealing systems’ that was presented at the 13th EDF–Pprime workshop, which was held in Futuroscope Chasseneuil, France, on 2 October 2014. For further information on this conference, contact: 13th EDF–Pprime workshop: ‘Energy Saving in Seals’, Nöel Brunetière, Institut P’, CNRS – Université de Poitiers – ENSMA, UPR 3346, Département GMSC, SP2MI, Bd Marie et Pierre Curie, BP 30179, F86962 Futuroscope, Chasseneuil Cedex, France. Tel: +33 5 49 49 65 31, Email: Noel. [email protected] or Email: [email protected], Web: http:// edf-pprime-2014.sciencesconf.org. Also see ‘Plenty of interesting new topics at October conferences’, Sealing Technology December 2014 pp. 9–12.
This invention concerns a well tool for sealing against a wall of a well. It incorporates an elongate mandrel that is encircled by a seal assembly that can change between an unset state and an axially compressed set state. The seal assembly includes an annular elastomer element configured to radially deform when in contact with the wall of the well in the set state. An annular anti-extrusion ring is included to compress the seal element and form a containing space, with a garter spring embedded in the seal element. The garter spring is embedded in the seal element adjacent to the axial end of the seal element and configured to span the gap between the anti-extrusion ring and the wall of the well in the set state. The containing space prevents the seal element from excessive deformation. Patent number: WO/2014/178866 Inventor: G.E. Farquhar Publication date: 6 November 2014
Elastomeric seal Applicant: FMC Kongsberg Subsea As, Norway The objective of this invention is to develop an improved sealing technology that can be used in an environment that is at an extremely low temperature, whilst not compromising the required aggressive fluid resistance. In cold climates, elastomeric seals used in pressure-containment equipment contract with a decrease in temperature, and might lose interference with a sealed counterpart, which eventually could lead to a leak in the system. The solution described in this patent involves seals made from a composite material comprising an elastomeric polymer and a negative thermal expansion
October 2015