Reports which have been exported to the repository (“Corporate Documents”) are in OBJ_X_DOCUMENTS in BLOB form, and so that information is not available via a query.
If you download all of the documents to your PC, then this utility from BOB’s Downloads might help you identify which reports use the object in question.
I could be wrong, but I don’t think anyone has submitted a utility that looks for the filters and conditions. If you write a utility to solve this problem, perhaps you could submit it to Bob’s Uploads to share with others. 
Anita Craig 
(BOB member since 2002-06-17)