June 29, 2011 TG3: Oil Mud Testing Procedures Report To SC13 Exploration & Production Summer Standards Meeting Hyatt Regency San Francisco, California June , 2011

June 29, 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

June 29, 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

June 29, 2011 WG1: Oil Mud Chemical Analysis Tom Shumate Chair – Baroid - Hibernation WG2: HPHT Direct Indicating Viscometers Keith Morton Chair - Chevron WG3: Particle Size Distribution Testing of OBM / SBM Greg Perez Chair - Halliburton WG4: Measurement of NAF Internal Phase Activity Modifiers Brent Estes Chair - Chevron TG3 Report To SC13

June 29, 2011 TG3 / WG2 HPHT Direct Indicating Viscometers Chairperson Keith Morton / Chevron WG Charge: Develop a recommended operating practice for concentric cylinder viscometers capable of viscosity measurements at pressures greater than 10,000 psig used to characterize the rheological properties of WBM and OBM at elevated temperatures.

June 29, 2011 TG3 / WG2 HPHT Direct Indicating Viscometers Status: Procedure has been revised by Keith Morton but still lacks introduction providing overview for user WG Chair / TG Chair to submit draft to publication TG by August 1, 2011

June 29, 2011 TG3 / WG3 Particle Size Distribution Testing of OBMs/SBMs Chairperson Greg Perez / Halliburton WG Charge: Propose a method(s) for determining PSD’s of NAF’s to be included in API RP13I.

June 29, 2011 TG3 / WG3 Particle Size Distribution Testing of OBMs/SBMs Work Group Members: Tim WilkinM-I Swaco Stephen Ward-SmithMalvern Keith MortonChevron Nathan TarverNewpark Carl LaCombeNOV Fluids Chris SteeleElkem Saleh Al-AmmariAramco Patricia PottsBaker Hughes

June 29, 2011 TG3 / WG3 Particle Size Distribution Testing of OBMs/SBMs WG considerations: Wettability of solids Homogenization methods Obscuration values Generalized parameters to avoid exclusion of existing equipment Adaptability of procedure for use at the rig site – HS&E issues with solvents commonly used for OBM PSD

June 29, 2011 TG3 / WG3 Particle Size Distribution Testing of OBMs/SBMs WG meetings decision: Limit WG scope to fully dispersed sample systems WG action items: Review SOP utilized by laboratories as a basis for establishing procedure for round robin testing Distribute sample to participating laboratories for round robin testing Identify replacement WG chairman as Greg Perez has a new role at Halliburton/Baroid

June 29, 2011 Chairperson Brent Estes/ Chevron WG Charge: Validate activity measurements for estimating concentrations of activity modifiers in NAFs and recommend a methodology for using activity measurements to estimate the soluble activity modifiers to allow calculations for low gravity / high gravity solids content in NAFs. TG3 / WG4 Measurement of NAF Internal Phase Activity Modifiers

June 29, 2011 TG3 / WG4 Measurement of NAF Internal Phase Activity Modifiers Work Group Members: William Benton Cabot David BreedenNewpark Kim Burrows Halliburton / Baroid Andres Diaz BP David EkasMarathon Brent EstesChevron Carl Lacombe NOV Fluids Joe PerezBaker Hughes Randy RayM-I SWACO Paul ScottConocoPhillips Shannon StocksExxonMobil

June 29, 2011 TG3 / WG4 Measurement of NAF Internal Phase Activity Modifiers Held two work group meetings since Winter SC13 meetings in Fort Worth, Texas Established a list of activity modifiers (7) to test. Developed round robin test matrix to determine accuracy and repeatability of hygrometers on select activity modifiers. Next meeting planned for first of August to review results from 1 st round robin tests. Recruiting additional members with laboratories to participate in round robin testing.

June 29, 2011 TG3 / WG4 Measurement of NAF Internal Phase Activity Modifiers Activity Modifiers: Calcium Nitrate Potassium Acetate Sodium Acetate Sodium Formate Potassium Formate Cesium Formate Polyglycerine Does anyone have any to add?

June 29, 2011 Particle Plugging Test Revision for Inclusion in RP13B-2 Met with TG4/WG2, Ceramic PPT Procedure Re-Write New procedure is applicable to RP13B-1, RP13B-2 and 13I WG2 chaired by Larry Mitchell has completed its revisions and will submit to TG2 Publications for final editing/formatting Formatted addendum to be sent to TG3 and TG4 by Cheryl Stark / TG2 for final review followed by electronic ballot for SC13 approval

June 29, 2011 TG3: Oil Mud Testing Procedures Announcement ISO (API RP13B-2) has been published – Thank You Cheryl! Old Business ??? New Business Ron Bland Adjourn