Development of an API Specification for Float Equipment API Spec 10 F

1. Development of an API Specification for Float EquipmentAPI Spec 10 F

2. Agenda • Work Group Members • Review of Scope • Minutes from April 2012 Meeting • Review of Action Items • Brent Lirette review of flow loop and measurements • Alfredo Sanchez – paragraph 5.1.1

3. Work Group Membership

4. Scope • Develop and API Specification for Cementing Float Equipment.

5. Document Scope • This standard provides minimum performance requirements, test procedures and marking requirements for cementing float equipment that, while limited, are deemed adequate for use in well construction in the petroleum and natural gas industries. This standard is applicable to float equipment that will be in contact with water-based or non-aqueous drilling fluids.

6. April 10 Meeting Highlights • Scope of Document Reviewed and Updated • Categories of float equipment reviewed • decision to add additional high rate category (20 bpm) • Work begun on acceptance criteria for: • Flow Rate Time Control • Temperature Control Pressure Control • Mud Properties

7. Highlights (cont.) • Functions of float equipment and general discussions on selection of float equipment will be moved to either an annex, or preferably to a separate technical report.

8. Temperature Control – highly dependent on mud circulation rate and system volume – while temperature control during circulation was not considered “controllable” the mud properties should remain within test parameters as currently defined. • Need to evaluate specifications for “Oklahoma #1” sand

9. Time Control – it was noted the total test time will be in excess of noted circulation time because of time required for shut down and reverse flow check every two (2) hours. • Final pressure test should be conducted within 15 minutes of end of final circulation.

10. Flow Loop • Brent Lirette

11. Back Pressure Testing • The value of stopping every two hours was questioned, though it would give an indication of the durability of the valve. The use of a 100 psi closing pressure and then the 250 psi pressure test was discussed. • Alfredo will provide some wording on how to better perform the test and give some guidance on how to measure the volume required to close a valve. (Ball type valves will require some rate and volume to close where spring loaded valves may not)

12. Sealing at low closure pressures • More wells are seen with very low differential pressures at the end of the job, as opposed to high differential pressures. • The ability for the equipment to seal with little or no differential pressure was discussed and may need to be part of a testing protocol.

13. Rate Control • Rates for flow tests to be maintained at: • 0 bpm • + 0.5 bpm

14. Testing with NAF • Component testing vs. full system tests • Full system testing requires large volumes of NAF to be stored and maintained • Testing of elastomers – can processes be taken from other areas using elastomers?

15. To Do List

16. Next Meeting • Hosted by OXY in Houston • When ? • July - very full • August – Chair will propose data and confirm with members