Abstract: Disclosed is a liner top test tool with a scraper cartridge and seal back-up rings for testing casing integrity in a wellbore. The seal back-up rings are comprised of first and second ring elements that are biased apart by compression springs. The first ring element has a boss that inserts into a bore of the second ring element, blocking debris from flowing into the interior of the seal back-up ring.

Abstract: Disclosed is a liner top test tool with a scraper cartridge and seal back-up rings for testing casing integrity in a wellbore. The seal back-up rings are comprised of first and second ring elements that are biased apart by compression springs. The first ring element has a boss that inserts into a bore of the second ring element, blocking debris from flowing into the interior of the seal back-up ring.

Abstract: A modular junk basket assembly adapted for attachment to a wellbore tubing string comprises a tubular body having a plurality of debris ports that feed into an integrally formed basket space. A baffle is slidably mounted on the tubular body which translates along the length of the tubular body to a position behind the debris ports, relative to the fluid pressure created on the baffle. The baffle has a plurality of fluid passageways which allow passage of drilling fluid and small debris as larger debris is diverted toward the debris ports and into the debris basket.