Increased conveyance reliability leads to the expansion of logging program and a 10x reduction in unsuccessful operations
Adverse well conditions have compromised logging operations in the “Jurassic” wells in Kuwait. In a single year, 48% of all logging operations involved NPT or were curtailed due to logging difficulties.
Logging tools failed to reach TD on 10 occasions, there were 5 fishing operations and 4 jobs were cancelled due to logging difficulties. Typically the operator would only run essential logging services due to the risk.
In the 18 month period following the introduction of Wireline Express the operator achieved a success rate of 95%. This included 4 logging runs at 70deg deviation – a local record. As a result the logging programs were expanded to XPT, CMR and LithoScanner.
In deviated wells using Wireline Express, the CMR bowspring can be removed and ledges are easily navigated with the angled holefinder.
Using the Wireline Express conveyance system led to a 100% success in conveying wireline tools in Jurassic vs a 50-50 success rate in the years before.
CHALLENGE
Multiple conveyance issues were causing a high rate of NPT and reduced logging programs.
SOLUTION
Petromac’s ‘Wireline Express’ package was introduced to Kuwait – Tool Taxis + angled holefinders.
RESULTS
- Logging programs were expanded to include XPT, CMR and LithoScanner.
- Failed operations dropped from 48% to 5%.
- 4 runs were made at 70deg deviation, a record for Kuwait.