Development of an API Specification for Float Equipment

API Spec 10 F

Agenda

Work Group MembersReview of ScopeMinutes from April 2012 MeetingReview of Action Items

Brent Lirette review of flow loop and measurementsAlfredo Sanchez – paragraph 5.1.1

Work Group Membership

David Stiles James HeathmanHank Rogers Gunnar DeBruijnBrent Lirette Craig GardnerDale Doherty Jamie ReidAlfredo Sanchez Erick CunninghamDavid Laurel Matthew GoodineJeff Ehlinger Paul HowlettBernard Fraboulet Andre Garnier

Scope

Develop and API Specification for Cementing Float Equipment.

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.

April 10 Meeting Highlights

Scope of Document Reviewed and UpdatedCategories of float equipment reviewed

decision to add additional high rate category (20 bpm)

Work begun on acceptance criteria for:Flow Rate Time ControlTemperature Control Pressure ControlMud Properties

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.

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

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.

Flow Loop

Brent Lirette

Back Pressure TestingThe 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)

Sealing at low closure pressuresMore 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.

Rate Control

Rates for flow tests to be maintained at:

- 0 bpm

- + 0.5 bpm

Testing with NAF

Component testing vs. full system testsFull system testing requires large volumes of NAF to be stored and maintained

Testing of elastomers – can processes be taken from other areas using elastomers?

To Do List

Next Meeting

Hosted by OXY in Houston

When ?July - very fullAugust – Chair will propose data and confirm with members