# US 2021/0277738 A1 · Method and Apparatus for Sacrificial Wellhead Protector and Testing Adapter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0277738 A1 - Document ID: US20210277738A1 - Status: Published application - Kind: A1 - Application number: 16/810,901 - Filed: 2020-03-06 - Published: 2021-09-09 - Earliest claimed: 2020-03-06 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Mohammed E. Mukhlifi - Web page: https://patentgrep.com/patent/US20210277738A1 ## CPC - E21B 33/03: Well heads; Setting-up thereof - E21B 33/068: having provision for introducing objects or fluids into, or removing objects from, wells (cementing-heads E21B33/05) - E21B 33/06: Blow-out preventers {, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers (rotating blow-out preventers E21B33/085)} - E21B 47/06: Measuring temperature or pressure - E21B 47/117: Detecting leaks, e.g. from tubing, by pressure testing - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract An apparatus or a well tool for testing a blowout preventer (BOP) on a surface wellhead. The apparatus includes a sacrificial wellhead adapter, a top locking mechanism adapted to lock the adapter to a BOP riser, and a bottom locking mechanism adapted to lock the adapter to a permanent tubing or casing spool of the surface wellhead. The apparatus further includes a plurality of lock down screws configured to be activated as a load ring. The sacrificial wellhead adapter further comprises a first profile for accommodating a test plug load ring, and a sealing profile for a test plug. The apparatus further includes a test plug with an activated load shoulder. The test plug is activated externally by energizing the lock down screws. The apparatus further includes a load ring configured to lock the test plug in place. ## Claims ### Claim 1 An apparatus for testing a blowout preventer (BOP) on a surface wellhead, the apparatus comprising: a sacrificial wellhead adapter; a top locking mechanism adapted to lock the adapter to a BOP riser; and a bottom locking mechanism adapted to lock the adapter to a permanent tubing or casing spool of the surface wellhead. ### Claim 2 (depends on 1) The apparatus according to claim 1, further comprising: a plurality of lock down screws configured to be activated as a load ring. ### Claim 3 (depends on 1) The apparatus according to claim 1, wherein the top locking mechanism includes an upper connection. ### Claim 4 (depends on 1) The apparatus according to claim 1, wherein the bottom locking mechanism includes a lower connection. ### Claim 5 (depends on 1) The apparatus according to claim 1, wherein the sacrificial wellhead adapter further comprises a first profile for accommodating a test plug load ring, and a sealing profile for a test plug. ### Claim 6 (depends on 2) The apparatus according to claim 2, further comprising: a test plug with an activated load shoulder. ### Claim 7 (depends on 6) The apparatus according to claim 6, wherein the test plug is activated externally by energizing the lock down screws. ### Claim 8 (depends on 6) The apparatus according to claim 6, further comprising a load ring configured to lock the test plug in place. ### Claim 9 (depends on 6) The apparatus according to claim 6, further comprising: a bowl protector to protect the sacrificial wellhead adapter and the permanent casing or tubing spool seal profile. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein the bowl protector comprises a top elastomeric seal and a bottom elastomeric seal. ### Claim 11 (depends on 9) The apparatus according to claim 9, wherein the bowl protector is retained in place by the lock down screws. ### Claim 12 (depends on 1) The apparatus according to claim 1, wherein the surface wellhead is a conventional or multi-bowl wellhead. ### Claim 13 A method of testing a blowout preventer (BOP) on a surface wellhead, the method comprising: coupling a sacrificial wellhead adapter to a permanent tubing or casing spool of the surface wellhead; coupling a BOP riser to the sacrificial wellhead adapter; and pressure testing the sacrificial wellhead adapter. ### Claim 14 (depends on 13) The method according to claim 13, further comprising: providing a plurality of lock down screws configured to be activated as a load ring. ### Claim 15 (depends on 14) The method according to claim 14, further comprising: running a test plug; locking the test plug in place by means of a load ring; energizing the lock down screws; and testing the BOP. ### Claim 16 (depends on 15) The method according to claim 15, further comprising: running a bowl protector to protect the sacrificial wellhead adapter and the permanent casing or tubing spool seal profile. ### Claim 17 (depends on 16) The method according to claim 16, wherein the bowl protector comprises a top elastomeric seal and a bottom elastomeric seal. ### Claim 18 (depends on 16) The method according to claim 16, wherein the bowl protector is retained in place by the lock down screws. ### Claim 19 A well tool for testing a blowout preventer (BOP) on a surface wellhead, the apparatus comprising: a sacrificial wellhead adapter; a top locking mechanism adapted to lock the adapter to a BOP riser; a bottom locking mechanism adapted to lock the adapter to a permanent tubing or casing spool of the surface wellhead; a plurality of lock down screws configured to be activated as a load ring; and a test plug with an activated load shoulder. ### Claim 20 (depends on 19) The well tool according to claim 19, further comprising: a bowl protector to protect the sacrificial wellhead adapter and the permanent casing or tubing spool seal profile.