Figure 1: The Subsea Test Valve, installed in a modified BOP cavity, i - PDF document

Figure 1: The Subsea Test Valve, installed in a modified BOP cavity, is designed to be 58November/December 2006 RILLIN are apparent, and Table 2 shows the Noting that the POOH times are on aver-ings using an SSTV, which can be writ-ventionally” (Potential Savings)Dwd = water depth (ft)DBML = depth below mudline (ft)(ft/hr)(ft/hr)a BOP test when operating in a given time to actually perform the BOP testing same whether using an SSTV or testing conventionally. When using an SSTV, the 3 shows that in 5,000 f t of water, with the drill bit 5,000 f using an SSTV to test the BOPs could Using the 5,000-ft curve as a baseline, rig rate, a single test using an SSTV in 5,000 f each required BOP test point as the savings are possible by using an SSTV required BOP testing. Although data using an SSTV may prove to be benefi-benefit from using an SSTV, particularly conditions make tripping pipe difficult.at the 2006 IADC European Well Control Variation of $ Saved PER TEST w/ DBML @ 5000' WDSemi-Submersible Average$100,000$200,000$300,000$400,000$500,000$600,000$700,000$800,000$900,0000500010000150002000025000BML (ft)Value of Time Savings $750K Da y $500K/Da $250K/Da Variation of Time Saved PER TEST w/ DBMLSemi-Submersible Average0500010000150002000025000BMLTime Savings(Hours) 1000’ WD5000’ WD 000’ WD miscBMLPOOHBMLwdtesttVDDVDDt+++

=22 Figure 3 (above): In 5,000 ft of water with the drill bit 5,000 ft below the mudline, using an SSTV can save up to 12½ hrs of tripping time. Figure 4 (below): With the 5,000-ft