Coiled tubing

Pilot Project for Carbon Dioxide Injection Uses Coiled Tubing and a Retrievable Bridge Plug

This paper describes the use of coiled tubing in a pilot project for carbon dioxide injection, enabling evaluation of the conversion of an existing oil field for CCS purposes and derisking storage-development uncertainties before having to cease hydrocarbon production.

Fig. 1—The condition of the RBP immediately after retrieval, with no visual damage or deformation.
Fig. 1—The condition of the RBP immediately after retrieval, with no visual damage or deformation.
Source: SPE 222569.

Project Greensand is Denmark’s leading CO2 sequestration project, expected to store between 4 million and 8 million metric tons of CO2 per year by 2030. An offshore CO2 injection trial in a depleted and inactive reservoir was conducted recently to evaluate the injection of CO2 into an existing water-injection well in the Danish North Sea. This operation demonstrated the possibility of using conventional intervention equipment and services as part of an early-phase enabler for a carbon-storage project.

Introduction

To meet climate objectives, Denmark acknowledges CO2 storage as a central solution. The vision for this effort is being realized through Project Greensand, backed by the Danish government. Project maturation entails a pilot test period with live CO2 injection, wherein CO2 is provided in batches by a marine vessel.

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