Press release 18 April 2002

Cleansorb exhibits at OTC 2002

Cleansorb is pleased to announce that it will be exhibiting at the Offshore Technology Conference in Houston, Texas from 6th  - 9th May 2002, located on the European Commission stand number 1215 which is highlighting early stage technologies.

Cleansorb will be presenting its proprietary enzyme based technology for downhole deposition of chemicals.  This approach has a number of applications including in-situ consolidation of poorly consolidated sandstones and downhole deposition of scale inhibitors to prolong squeeze treatment life.  The latter application is under development with an international scale control company.  Cleansorb is seeking collaborators, particularly operating companies, to progress development of it's sand consolidation technology.

Cleansorb will be pleased to discuss the above in more detail with visitors to the stand.

For further information contact:

Dr Ralph Harris or Dr. Ian McKay

Cleansorb Ltd, Surrey Technology Centre

40 Occam Road, Surrey Research Park

Guildford , Surrey    GU2 7YG     U.K.

Tel. ++44 (0)1483 295090

Fax. ++44 (0)1483 845358

Notes for editors:

1. In-situ deposition of materials has been developed by Cleansorb Limited, based at the Surrey Research Park in Guildford, Surrey, UK. The process combines enzymes (biological catalysts) with suitable chemicals to achieve the deposition of solid materials from an initially particle free fluid. 

2. The controlled deposition of specific, selected materials within sandstones results in improved cementation between the sand particles and useful increases in consolidation. 

3. The technology can also be applied to the deposition of scale inhibitors from solution.  The chemical and biochemical components of the treatment fluids are environmentally friendly and very low hazard. 

4. A catalyst is a compound which promotes a chemical reaction without itself being consumed.  The catalysts used in Cleansorb’s deposition processes are enzymes.  Enzymes are chemical compounds found in nature.  They are, however, single chemical compounds which can be manufactured to the usual standards of purity of industrial chemicals.

5. Although Cleansorb’s deposition technology is a biotechnological process it should be clearly distinguished from oilfield well treatments based on bacteria.  Using enzymes confers many advantages including a high level of process control, high yield and better thermotolerance. 

© Cleansorb Limited 2006.  All rights reserved.