Blast Curtains – Reasons to Install
Reason for installing blast curtains on-board rig
- Two curtains installed to isolate and provide safety barrier between the stand pipe and choke manifold.
- It allowed high pressure testing on both manifolds during routine operations on the drill floor, which lead to a considerable time and cost saving.
Installation & Handling
- Blast Curtains easily installed.
- Installation around stand pipe and choke manifold took approximately 5 days – this included survey and design drawings.
- Blast Curtain designed with fixed runner rails so they can be closed and extended with ease, or secured away when not in use. Blast Curtains and Frame DNV Certified
- Testing Required from 10-20,000 psi
- Blast Curtains are tested by both Chesapeake Testing and UL Testing to Ballistic level stopping a Magnum 357 bullet travelling at 1374 ft/sec.
SB Series Product Benefits
- The BOP test is divided in two main components.
- The test of the BOP itself, the rams and valves.
- The test of the Stand Pipe Manifold and Choke Manifold.
Note: there are more manifold tests to perform than that on the BOP itself. Therefore, even if tests on BOP and manifolds could be performed in parallel, in the end manifold tests would still be performed during rig time.
- Drill floor manifolds under high pressure are typically next or near the rotary table where drill crew work, therefore work is typically stopped during a choke manifold test i.e. no tripping of pipe etc.
- Safety blast curtains allow operations to start as soon as the BOP itself is tested and the test string is out of the hole, the rest of the choke manifold tests can be performed behind the blast curtains, thus protecting crew members.
- Cost Benefits
- Expect 8 to12 hour savings during each full pressure test.
- Allows for simultaneous operations while pressure testing.
- Pays for itself at very first or second pressure test, likely within the first 2 months of blast curtains installation.