TG # 6 API SC13 Meeting Winter Standards Meeting January 24 – 28, 2011 Fort Worth, Texas

TG # 6 Agenda TG-6: Testing of Heavy Brine TG Charges Roll Call Previous Meeting Minutes – Approval Publication Status/ Reports / Data / Conclusions / Recommendations/ Gantt Chart Old Business New Business - Next Scheduled Meeting Action Items Adjourn

TG # 6 TG – 6 Charge Recommend, develop and evaluate procedures for field and laboratory testing of heavy brines. Update, revise and expand API RP-13J, “ Testing of Heavy Brines ” and “ ISO/WD 13503, Part 3: Testing of heavy brines ”. Form Work Groups to achieve specific charges.

TG # 6 TG-6 Members / Role Call 1. Paul H. Javora – Baker Hughes – Chair 2. Saleh Al-Ammari - Aramco 3. William J. Benton – Cabot 4. Brent Estes – ChevronTexaco 5. Judy Guy-Caffey – Tetra 6. Bill Foxenberg – Schlumberger (Adelina Son) 7. Catalin Ivan – ExxonMobil 8. Paul Scott – ConocoPhillips 9. Tom Shumate – Baroid 10. Cheryl L. Stark – ret. 11. Victoria Qiu - Shell (Tom Jones – BHI)

TG # 6 Previous Meeting Minutes Met in Washington, DC, June 2010 Members Present 1.Brent Estes 2.Judy Guy-Caffey 3.Catalin Ivan 4.Lirio Quintero for Tom Jones 5.Tom Shumate 6.Paul Scott 7.Del Son 8.Cheryl Stark 9.Saleh Al-Ammari Absent: Paul Javora, William Benton

TG # 6 Approval of Previous Minutes Motion: Maker: Second: Result:

TG # 6 Report 1. Revisions to Testing of Heavy Brines WG (ISO & RP-13J) Edit, revise & process DIS/FDIS comments of submitted documents – Adopt back as RP-13J 2. Buffer Work Group, Chaired by Del Son – Document completed Prepare a method for determining the buffering capacity of brine, Document completed, reviewed and submitted for ISO formatting, etc, participate in ISO acceptance of the document. Del Son – Chair, Beth Prasek – MI-SWACO, Kingsley Nzeadibe – Halliburton-Baroid, Siv Howard – Cabot, Mohammad Tej – Baker Hughes Drilling Fluids, Judy Guy-Caffey – Tetra Technologies, Paul Javora – BJ Services 3. PCT Work Group, Don Isaac, Chair, Halliburton Evaluate and qualify “in-house” PCT test procedures. Draft document on the Round Robin testing for the PCT of Brines completed, Last Round Robin to be completed January 2011 May 2011 Ferrill G. Dalton - Halliburton-Baroid, Paul Javora – BJ Services, Weyman Dunaway – Tetra Technologies, Andree Dunston – Ambar Lonestar, Mohammad Tej – Baker Hughes Drilling Fluids, Ken Slater – MI-SWACO, Charlie Svoboda – MI- SWACO, William Benton – Cabot

TG # 6 Report 4. Corrosion Work Group, Judy Guy-Caffey, Chair, Tetra Technologies, Inc., Document completed Update and complete the corrosion section of RP-13J, document completed, reviewed and submitted, participate in ISO acceptance of the document. Ed Malachosky (Co-secretary) – Baker Hughes Drilling Fluids, Mohammad Tej (Co-secretary) – Baker Hughes Drilling Fluids, John Augsburger – Halliburton-Baroid, Bill Bailey – Baker Oil Tools, William Benton – Cabot, Rashmi Bhavsar – Schlumberger, Yue Chen – Shell, Andree Dunston – Ambar Lonestar Fluid Services, Dodie Ezzat – Halliburton-Baroid, Bob Horton – MI-SWACO, retired, Don Isaac – Halliburton-Baroid, Paul Javora – BJ Services, Ardjan Kopliku – BP, Keith Sharp – BJ Services – Retired, Adelina J. Son – Champion Technologies 5. Future-Projects Work Group, Judy Guy-Caffey, Chair, Tetra Technologies, Inc. Establish/Suggest future projects for TG-6 to go beyond Future-Projects were identified, reviewed, submitted, selected and established. Document completed. John Augsburger – Halliburton-Baroid, Ferrill Dalton – Halliburton-Baroid, Paul Javora - BJ Services, Del Son, William Benton – Cabot, Siv Howard – Cabot, Bob Horton – MI-SWACO (Retired )

TG # 6 Report 6. Return Permeability Work Group, Dodie Ezzat, Chair, Halliburton 1. Compile and evaluate test procedures 2. Summarize testing parameters 3. Determine essential/desired parameters 4. Establish a suitable method or methods that satisfy oilfield requirements NOTE 1: Round-Robin testing not in scope NOTE 2: Confer with the ISO Project (13503 Series) already convened Members: Keith Morton - Chevron, Carl Stouffer, Mel Schmit, Paul Javora – Baker Hughes, Saleh Al-Ammari – Saudi Arabia, William Benton, Cabot

TG # 6 Report 7. Displacement Work Group, Ed Malachosky, Chair 1.Compile and evaluate test procedures 2. Summarize testing parameters 3. Determine essential/desired parameters 4. Conduct Round Robin Testing 5. Establish a suitable method or methods that satisfy oilfield requirements Members: Marshall Chiasson – Tetra, Keith Morton - Chevron, Ed Robinson – Halliburton, Dodie Ezzat – Halliburton, Paul Javora – Baker Hughes, Katrina Schultz – Baker Hughes, William Benton, Cabot

TG # 6 Report 8. Hydrate Work Group, Keith Morton, Chevron, Chair (Del Son) 1.Compile a list of hydrate programs 2.Summarize capabilities of each program 3.Generate test fluid compositions and parameters to compare programs 4.Conduct hydrate calculations with each program for the test fluids/conditions 5.Correlate the test results 6.Identify those programs that satisfy oilfield requirements NOTE 1: Round-Robin testing not in scope Members: Jennifer Shafer – Tetra, Dodie Ezzat – Halliburton, Paul Javora – Baker Hughes, William Benton, Cabot

TG # 6 Report 9.Scale Work Group, Judy Guy-Caffey, Tetra, Chair 1. Identify & compile oilfield scaling issues 2. Compile & evaluate test procedures 3. Identify & summarize essential/desired parameters 4. Summarize findings into a ‘knowledge document’ for completion engineers Members: Victoria Qiu – Shell, DonaldLindblad – Paladin Solutions, Curtis Sitz, Vice-Chair – CorsiTech, Kern Smith - Baker Hughes, Brittany Gitch, Secretary - Baker Hughes, Marc Lehmann - Baker Hughes, Vu Thieu – Baker Hughes, - Schlumberger, Paul Javora – Baker Hughes

TG # 6 Report 10.Emulsion Technology Work Group, Paul Javora, Chair ISO Series Work Group Establish a laboratory method or methods to evaluate the tendency to form emulsions or sludge when drilling, completing, fracturing or treating fluids contact formation fluids. Phase I – Establish Base-Line Profile (In-house & Standard Procedures) Phase II – Develop a Round Robin Scheme Current need: 55 gallons of crude oil - untreated Members: Keith Morton - Chevron, Brent Estes – Chevron, David Ekas – Marathon, Dodie Ezzat – Halliburton, Ferrill Dalton – Halliburton, Gary McGuffey, Paul Javora – Baker Hughes, Katrina Schultz – Baker Hughes, William Benton – Cabot, Patricia Potts – Baker Hughes, Phillip Kaufman – CESI Chemical, John Vian - Schlumberger

TG # 6 Report 11. API CRA Testing Program, Paul Javora, Baker Hughes, Chair Implement and monitor the API CRA Testing Program. Funding Year 3 completed and the final results were reviewed and sent to the Participants. Funding Year 4 was initiated in 2010, tests were discussed and planned, and the first four tests were implemented. Results expected in February. The first in a series of meetings to critically review Year 1 and 2 results was held December 2010.

TG # 6 17 Participating Companies for Year 4 Baker Hughes BJ Services Company Cabot Specialty Fluids ChevronTexaco Energy Technology Company ConocoPhillips ExxonMobil Halliburton Energy Services Hamilton Metals, Inc. Marathon Oil Company M-I SWACO Saudi Aramco Schlumberger Shell International E&P Inc. Siderca SAIC – Tenaris Sumitomo Metal Synergy Fluids Tetra Technology Inc.

TG # 6 Old Business 1.A 2.B 3.C

TG # 6 New Business 1. Testing Heavy Brines, API 13 J – ISO DIS Bernard Fraboulet, TOTAL Technology Specialists 2.B 3. C

TG # 6 API Exploration & Production Standards Winter Meeting Fort Worth, January 26 th, 2011 Testing Heavy Brines API 13 J – ISO DIS Hydrometers & Density measurements Bernard Fraboulet, TOTAL Technology Specialists

TG # 6 Density & specific gravity measurements  Hydrometers  Density hydrometer Concept : mass per unit of volume (ρ) SI Graduations in g/ml - kg/m 3 USC Graduations in ppg Reference temperatures  SI 20°C  USC : 70°C ( 21.1°C)  Relative density (specific gravity) hydrometer Concept : ratio of ρ sample by ρ water at the same temperature Graduation dimensionless Reference temperature 15.56°C /60°F Ratio of sample density to water density at 60°F : 999,012 kg/m 3 ≡ 0, g/ml (8,337 ppg)

TG # 6 Hydrometer and normative references  ISO 387: 1977 Principles of construction and adjustment  ISO 649:1981 Density hydrometer for general purposes part 1 : Specifications Part 2 : Test methods and use  for both part : no adoption by USA  ISO 650 :1977 Relative density 60/60°F hydrometers for general purposes  Not adoption by France and Germany and then by CEN

TG # 6 Reference & Reporting temperature ISO 387 Reference temperature Clause density hydrometer : − 20 °C (68°F) − In special circumstances : substitution to 15°C (59°F) or 27°C (80.6°F) − 27°C i.e 80°F recommended − other reference temperatures ? USA : 70 °F ? Clause 4.2 : relative density hydrometer − 60°F ( 15,56°C) for liquid and water  Density reporting temperature For any measurement done at a temperature which is not the reference one, a correction is required.  General reporting : when density hydrometer is used why to report at a different temperature than the reference ’s one ?  Does it need to get a direct conversion between SI ref. temperature to USC’s (20°C – 68°F) or between USC ref. temperature to SI’s (70°F – 21°C) ? Reporting temperature proposal : SI report : 20°C USC report : 70°F Left to users

TG # 6 Clause Hydrometer description More accurate description As per ISO’s : class M100 hydrometer Density hydrometer Relative density hydrometer Calibration : at least quarterly

TG # 6 Temperature Correction factor Density hydrometer Only a correction linked to hydrometer volumetric change is required : − Standard glass thermal volume expansion 20 x − Table linked to readings and temperature − Minor difference lower than uncertainty if the same table is used for 20°C or 70°F as reference temperature − Two tables ( SI and USC) possible

TG # 6 Temperature Correction factor Relative density hydrometer Reference temperature 60°F Correction whatever the reporting temperature Correction linked to − Glass volumetric change − Water temperature density variation  Correction factor : − Complex equation − tables of coefficient − variations as per author/references

TG # 6 Proposed changes Clause Temperature correction for hydrometer Density hydrometer Correction factor (unit kg/m 3 or g/ml) Relative density hydrometer sub clause  no changes  Add SI equations

TG # 6 Next Scheduled Meeting San Francisco, June 2011

TG # 6 Action Items 1.a 2.b 3.c

TG # 6 Adjourn Motion: Maker: Second: Result: Time of adjournment: