I was unaware of the Halliburton study referenced in the Montara Inquiry Report:
A 2001 Halliburton study of USA Gulf of Mexico cementing failures in 4000 wells showed that (i) approximately one in six casing shoes required remedial work after primary cementing (by way of a so‐called ‘squeeze job’); and (ii) intermediate casing shoes failed shoe tests 70 per cent more often than shallower casings because they were more likely to be over‐displaced.
This paper was presented at an SPE conference in New Orleans. Click here to purchase the paper or read a good abstract.
Questions:
- Have other analyses and reports been prepared using these data?
- Would Halliburton make the data base available for the common good if they receive legal protection?
- In light of the worldwide interest in better understanding well integrity risks, would Halliburton and others expand the data base to include other regions?
- Surely, there must be other private data bases that would be useful for assessing operational risks and developing mitigations. Are the owners willing to identify these data bases? Can they be protected from liability risks if they agree to make the information accessible?
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