How to fix casing leak at shoe

25 January 2017 Hi Folks,
One of my clients have an integrity issue with the shoe of the 7" casing. 
The 7" casing (29ppf, L80 13% Cr) is set across a high pressure zone. The next hole section is low pressure and when they were trying to reduce the mud weight they have experienced a flow. Based on the fact and information they have gathered, they have concluded that the 7" show is leaking. They have tried few cement jobs to fix the problem with no success. They are considering running a short Expandable liner to fix the leak zone and drill the next hole section. This section will be covered with another liner string.
Do you know any companies can perform this job in Iran? (Considering the existing sanctions)
Is there any proven technique may fix the problem?

Thanks and regards
Gaz

4 Answer(s)

---