© 2011 Chevron

API 16A 3rd EditionSummer Conference Committee Meeting24-June-2013

API 16A Chairman: John BusbyCo-Chair: Jim McCabe

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API 16A Status

3rd Edition / June 2004 / Effective Date: December 1, 2004

Reaffirmed: August 2010

Present Status: Under Revision

Ballot Target Date: By next Conference 2013

© 2011 Chevron

New Elements for 4th Edition

Established minimum design standards for blow out preventers

Updated temperature chart for blow out preventers (see next slide)

Defined verbiage on “HAZ” zone

– Issue: NACE states 2mm / 6A states 2mm, 16A states 2mm but drawing shows 1.5mm

– Action: change drawing to reflect 2mm. Consistent with API 6A

Subsea Riser gas handling systems, BOP or Diverter? Should be in RP-64

Establish PSL-levels for new manufactured Drill Through Equipment.

Dropped, 16A functions based on a PSL-3 level due to the critical nature of this equipment. Decision was made to not adapt PSL levels.

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New Temperature Ratings

Lower Limit Operating Temperature Limit Extreme Temperature Limit

CodeTemperature

CodeTemperature

CodeTemperature

°F (°C) °F (°C) °F (°C)

A -15 -26 A 150 66 A 180 82

B 0 -18 B 180 82 B 200 93

C 10 -12 C 210 99 C 220 104

D 20 -7 D 240 116 D 250 121

E 30 -1 E 270 132 E 300 149

F 40 4 F 300 149 F 350 177

G Other Other G Other Other G Other Other

EXAMPLE    Material “FDE” has a lower temperature rating of 40°F, a continuous elevated temperature rating of 240°F, and an extreme temperature limit of 300°F.

Table 4 – Temperature ratings of non-metallic sealing materials

© 2011 Chevron

New Elements for 4th Edition

Table 26, removed 25k and 30k ratings.

Bernell of ring grooves after make up with gasket in place.

– Discussed, Decided to adapt API 6A inspection criteria.

Align with ST-53 on maximum operating pressure to be used in shearing

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New/Ongoing Discussion Topics

Develop Minimum Design Criteria for BOPs to Seal and Hold Gas

– Currently being discussed in API 17G

– Low Pressure and High Pressure Gas testing for qualification purposes

– Formed work group to explore testing protocal.

Establish qualification for BOP to close on flow

Establish normal operating system pressure based on well bore pressure. (i.e. what pressure should be required to close a ram when there is wellbore pressure trapped in the bore)

Should API16A only cover “Drilling and Completion Applications” , or should it include Workover / Intervention, Snubbing, etc.

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New/Ongoing Discussion Topics

Set maximum bolting hardness of 35Rc for subsea applications (ref: connector bolting issue)

– API 6A, section 10.3.3.2

– API 17A, section 6.4

– API 16F, section 6.2.1

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New/Ongoing Discussion Topics

PSIA versus PSIG and PSID?

– Work group formed to collaborate with API 17D & 6A on this issue.

Fluid compatibility for elastomers

– Already addressed in ST-53

Qualifying high temp elastomers for steam

– Parked this issue for now

Hub face separation on subsea drilling connectors

– Look at 17G and gain alignment

Product Marking – 5 year

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New/Ongoing Discussion Topics

Shearing offset pipe. Verbiage is in the draft document.

Better understanding of the minimum operating pressure required to maintain seal on rams in the presence of wellbore pressure.

– Should this be included in the equipment data package?

Review BOP design criteria for deepwater applications

– Effects of negative pressure (hydrostatic from water depth)

– Bending and tension loads on BOP’s and flanges

© 2011 Chevron

Minimum BOP Design Criteria

TestRam BOP

Annular BOPHydraulic

connectorsFixed bore a Variable bore Blind a Shear

Sealing characteristics Reportable Reportable Reportable Reportable Reportable

N/A

Fatigue 52 cycles 28 @ minimum dia, 28 at Max.

Dai

52 cycles 52 cycles 52 cycles

Stripping 3000 ft and 100 tool joints

Reportable N/A N/A 3000 ft and 100 tool joints

Shear N/A N/A N/A See Table 18 or PO

N/A

Hang-off 450k< 5inch

600K >5 inch

Reportable N/A N/A N/A

Packer access 200 cycles with 10 pressure cycles 50 cycles

Ram locking device 11 Successful Lock and seal N/A

Locking mechanism N/A

P2, S2

Sealing mechanism P1, S3

Temperature verification Low temp 3 cycles, HT Fatigue 200 closures 10 pressure cycles, HT Emergency 1 Hour hold time

N/A

 

 

 

 

 

© 2011 Chevron

Agenda

Safety Moment

Introductions

Status

Review New Elements for 4th Edition

Review New/Ongoing Discussion Topics