Customer challenges
- The customer operated nitrogen storage caverns onshore in the UK, the caverns consisted of two wells, one used for N2 import and export with an 9 5/8" string and the other for monitoring purposes
- The customer had a history of issues with salt blockages at various points in the well, restricting import and export (production)
- Previous attempts at removing the salt blockages with conventional high pressure jetting had some success but were limited due to the depth the jetting system could be deployed
Expro Excellence
- Our CoilHose system was selected as the optimum method for jetting and to conduct a memory camera survey in order to reinstate the N2 cavern back into production
- Expro supplied a reduced package footprint of equipment compared to conventional Coil Tubing and flexibility to offer CoilHose, Cased Hole memory services and a Well Test fluids handling package greatly reducing mobilisation time, rig up times and crew size
- A collaborative approach to developing the well programme with the customer
- Pre-mobilisation SIT ensured confidence in the effectiveness of the proposed jetting solution
Value to client
- Expro's delivery of the CoilHose technology reinstated the cavern back into production by utilising the jetting BHA and downhole memory camera
- Two runs were performed with five jetting passes and a memory camera survey with no missed runs
- The camera survey was performed after the jetting clean-up to evaluate the effectiveness of the CoilHose application
- All programme objectives were achieved
- Excellent cooperation and collaboration between Expro and the client during the project
- This project demonstrated our collaborative approach with three product lines supporting one operation. The three product lines were CoilHose, Well Test and Cased Hole
