Since a blowout preventer cap was placed over BP's damaged oil well in the Gulf of Mexico last weekend, there have been repeated delays in the so-called "well integrity tests" to determine whether the cap can be effective in holding back the oil.

On Tuesday, Coast Guard Admiral Thad Allen delayed the tests for 24 hours out of fears that they would lead to "irreversible leakage" if it was found that the well bore had been damaged below the sea floor. After a White House review, BP was told on Wednesday that it could proceed with the test, but a leak in a line leading from the cap then forced an additional one-day delay for repairs.

Oil industry expert Bob Cavnar isn't buying the official story. He told MSNBC's Keith Olbermann on Wednesday that the repeated missteps cast doubt on BP's explanation for why the cap was necessary in the first place.