January 26, 2011 TG3: Oil Mud Testing Procedures Report To SC13 Exploration & Production Winter Standards Meeting Renaissance Worthington Hotel, Fort Worth, Texas January , 2011

January 26, 2011 TG Charge: Recommend needed changes and develop test procedures for field and laboratory testing of oil- based drilling fluids (results usually published in API RP 13B-2 / ISO and RP 13I / ISO 10416) TG3: Oil Mud Testing Procedures

January 26, 2011 Marvin Pless / Baker Hughes – Chair David Dino / Elementis – Secretary Brent Estes/ Chevron Larry Mitchell / OFITE Paul Scott / ConocoPhillips Tom Shumate / Baroid Catalin Ivan / ExxonMobil Tim Wilkin / M-I TG3 Members

January 26, 2011 WG1: Oil Mud Chemical Analysis Hibernation WG2: HPHT Direct Indicating Viscometers Sent back to WG to address TG comments WG3: Particle Size Distribution Testing of OBM / SBM Held one meeting and has developed a work plan for future action SR 3 : Measurement of NAF Internal Phase Activity Modifiers To be addressed by Paul Scott TG3 Report To SC13

January 26, 2011 Particle Plugging Test Revision for Inclusion in RP13B-2 Meeting with TG4/WG2, Ceramic PPT Procedure Re-Write New procedure will be applicable to RP13B-1, RP13B-2 and 13I WG2 to submit procedure to TG4 for approval Following approval of draft in TG4, draft procedure to be distributed to TG3 members for review / approval

January 26, 2011 Background: Increased emphasis on environmental aspects of drilling fluids is driving fluid companies toward non-chloride internal phase activity modifiers for non-aqueous fluids Introduced at the 2010 winter meetings SR 3 submitted by Brent Estes to the Task Group at the 2010 summer meetings Tabled by Task Group for further refinement Measurement of NAF Internal Phase Activity Modifiers

January 26, 2011 Actions assigned for consideration prior to winter standardization conference: Limit scope of materials to be addressed Inclusion of methodology for solids calculations into SR 3 document / WG Charge Measurement of NAF Internal Phase Activity Modifiers

January 26, 2011 Interested parties met on 12/7/2010 to draft a response to the Task Group: Activity modifiers to be considered Formates Nitrates Acetates Glycol / Glycerols Agreed to include methodology for utilizing activity measurements to calculate corrected solids. Measurement of NAF Internal Phase Activity Modifiers

January 26, 2011 Proposed Work Group Charge: Develop procedure(s) for measurement of non- chloride activity modifiers in non-aqueous fluids and methodology to use those measurements in corrected solids calculations. Measurement of NAF Internal Phase Activity Modifiers