Plug and abandonment of oil and gas wells (P&A)

We have developed a well cement product additive, RePlug that improve the outcome and reduce the costs for well operations and plug and abandonment (P&A) operations. We have developed a functional prototype, tested and qualified it at SINTEF Petroleum. This product will also make the wells and plugs more resistant against carbondioxide in formations utilised for Carbon Capture and Storage.


The numbers from the shows that per March 2015, 2134 wells on the Norwegian Continental Shelf must be P&A’d. This  excludes the many production- and injection wells that may follow from new developments and modifications for EOR and IOR.  P&A is mandatory by law. An average operation time of 35 days indicates a bill of several hundred billions NOK is on its way to the operators, and through tax-instruments, the tax payers. 15 rigs will use 40 years to P&A, full time. This is 10% of the Norwegian State income from oil and gas.

This also means that there is a giant market for P&A waiting for the supply industry. Massive employment will be created when new technology comes to market.

Cheaper and better P&A solutions will be imperative for the NCS for decades. ReStone is developing products where mineral waste with particular properties will create a better integrity of wells in the cement and plug. This will in addition create a better sealant for CO2, and come the onset of Carbon Capture and Storage (CCS) the NCS will be ready. By reducing the overall cost, the cement will also reduce the cost for P&A.

Norway has extensive experience with storage of CO2 in geological formations on the NCS, in the process called CCS.  NPD has shown that there is more than 80 billion tonnes capacity for CO2 storage on the NCS. The amount is equal to the Norwegian emissions for 1000 years. In addition, in the gas from a number of fields on the NCS (ie. Snøhvit) there is a naturally high level of CO2. The gas is separated from the main stream and stored in brine filled geological formations. This storage can be pertinent in future developments also. The Norwegian Government starts CCS at Smeaheia with a chosen operator (TBA) and the importance of a standardized, CO2-safe, easy to use, P&A material is imperative.

Would you like to know more? Contact us: +47 98 294 126 / +47 915 797 81