66 ENVIRONMENT
High tech solutions to recycling drilling process by-products
Fossil fuel prices may still be low but, as Sean Ottewell reports, demand remains strong for solutions that deal safely and economically with the by-products of oil and gas production.
A pesar de que los precios de los combustibles fósiles siguen a la baja, como Sean Ottewell comenta, la demanda de soluciones que se hagan cargo de manera segura y económica de los subproductos de la producción de petróleo y gas sigue siendo fuerte.
Die fossilen
Brennstoffpreise mögen zwar immer noch niedrig sein, jedoch ist die Nachfrage nach Lösungen für die sichere und wirtschaftliche Nutzung der Nebenprodukte aus der Öl- und
Gasproduktion nach wie vor groß. Ein Bericht von Sean Ottewell.
T
reating and recycling the by-products of the drilling process is a growing challenge for operators in the North Sea and a number of
companies are now specialising in this activity. One of the busiest is Total Waste Management Alliance (TWMA), which has already won over £10m-worth of clean-up contracts this year from companies such as Total, AGR and Maersk. One of the company’s main ongoing contracts is to supply its TCC-RotoMill (Fig. 1) services on the Stena Spey at Petrofac’s Don development.
Since the work started, TWMA says it has safely and successfully handled, processed and disposed of in excess of 1080 tonnes of drill cuttings, recovering over 300 barrels of oil during the process. This was returned to the client for re-use.
“Having the TCC-RotoMill on-site on the rig meant there was no costly downtime which can run at US$350 000 a day and also meant more than 2000 crane lifts and all associated logistics were avoided so it was clearly extremely successful in terms of environmental, cost and health and safety performance,’’ said TWMA general manager Neil Thomson.
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Fig. 1. The TCC-RotoMill is being used widely to handle the by-products of drilling.
“The fact Petrofac chose to continue working with TWMA on the Stena Spey is a clearindication that the TCC-RotoMill is recognised as a cost-effective, safe and efficient solutionwith a significant range of benefits for the operator and the drilling crew,’’ he added.
A spokesperson for Petrofac said, “The work TWMA is carrying out for us on the Stena Spey has avoided downtime and helped reinforce our safety-conscious approach in all our offshore operations.’’
TWMA works for a wide range of clients supplying services including the treatment, handling and recycling of the by-products of the drilling process both on and offshore. Last year it landed new projects with Total and Senergy, as well as extensions to existing contracts for BP, ExxonMobil and Oilexco. One new contract for Total, which has been a client of TWMA for five years, is worth more than £10million for three years work with the option of extending for a further two years. An additional contract for Total is to be carried
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