Abstract
The Castor Project is developing a underground gas storage facility in the east coast of Spain. It is able to contain 1.3 billion cubic meters of gas, 3 months consumption of Valencia region.
It takes the gas from the Spanish gas pipeline system for storage, and when the gas system requires it, these facilities will be able to return the gas to the Spanish gas pipeline system in the same conditions as it was received through a submarine gas pipeline.
Japan drilling company (JDC) had got involved in this project as a drilling contractor. This paper will explain about the Castor project outline, gas storage drilling outline and some troubles during drilling the wells for this project.