Kuda Laut-1; Singa Laut-1 Drilling Fluids Program Review – Pre-Spud PT M-I Indonesia January 9th, 2014

KL-1 and SL-1 - Tuna field exploration wells Overview KL-1 and SL-1 - Tuna field exploration wells Kuda Laut-1 – 36” and 26” riserless, SW+ Sweeps; 16” modified ULTRADRIL; 12-1/4” ULTRADRIL Singa Laut-1 – sidetrack 12-1/4” in KL-1’s 13 3/8” casing cont’d with 8-1/2”, ULTRADRIL

Logistics – contingencies especially on LCM Key Issues Possibility to encounter severe to total losses while passing through fault – SL-1 Logistics – contingencies especially on LCM Possible elevated Mud Weights expected for SL-1

KL-1 – 36” Riserless – 461’ to 745’ MDRT Drilling fluid: Sea Water / Hi-Vis Sweeps Key products: Bentonite, Soda Ash, Potassium Hydroxide Key issues: Hole cleaning, hole instability Regularly pumped high viscosity sweeps will ensure hole is getting cleaned Proposed frequency of 50-75 bbls for each 45 ft drilled The Bentonite will provide the overall viscosity and fluid loss control Density 9.0 ppg – displacement at section TD

KL-1 – 26” Riserless – 745’ to 1,500’ MDRT Drilling fluid: Sea Water / Hi-Vis Sweeps Key products: Bentonite, Soda Ash, Potassium Hydroxide, Duovis Key issues: Hole cleaning, hole instability Regularly pumped high viscosity sweeps will ensure hole is getting cleaned Proposed frequency of 50-75 bbls for each 45 ft drilled The Bentonite will provide the overall viscosity and fluid loss control Density 9.0 ppg – displacement at section TD

KL-1 – 16” – 1,500’ to 4,700’ MDRT Drilling fluid: KCl/Ultrahib Key products: KCl, Ultrahib, Duo-Vis, Polypac UL Key issues: Wash Out, Hole cleaning, Lost circulation. Density 9.5 – 10.0 ppg Ultrahib concentration 2.5-3.0% v/v and the KCl at 8-10% w/w, to achieve a good level of inhibition in the system 6 RPM: 12-16 LGS less than 5% Idcap D, Starglide, various LCM - contingency

KL-1 – 12-1/4” – 4,700’ to 9,603’ MDRT Drilling fluid: ULTRADRIL Key products: KCl, Ultrahib, Idcap D, Flo-Vis Plus, Polypac UL Key issues: Wash Out, Hole cleaning, Lost circulation. Density 10.0 – 11.0 ppg Volume carried forward from 16” – conditioned to full ULTRADRIL specs Ultrahib concentration 2.5-3.0% v/v and the KCl at 8-10% w/w, to achieve a good level of inhibition in the system Idcap D encapsulator at 2-3 ppb to prevent cuttings dispersion

KL-1 – 12-1/4” – 4,700’ to 9,603’ MDRT (cont.) Drilling fluid: ULTRADRIL Key products: KCl, Ultrahib, Idcap D, Flo-Vis Plus, Polypac UL Key issues: Wash Out, Hole cleaning, Lost circulation. 6 RPM: 10-14 Fluid loss should be maintained <5cc API by using 2.5 - 3.0 ppb Polypac UL Combination of 1.5ppb Safe Carb 20 & 1.5ppb Safe Carb 40 would be added to seal off across permeable formations Save leftover ULTRADRIL volume to be conditioned for Singa Laut-1 kickoff

SL-1 – 12-1/4” – 4,450’ to 9,385’ MDRT Drilling fluid: ULTRADRIL Key products: KCl, Ultrahib, Idcap D, Flo-Vis Plus, Polypac UL Key issues: Lost circulation through Fault, Hole instability, Bit balling, Hole cleaning Sidetrack kickoff in the 13 3/8” casing of KL-1 Wide density range 10.0 – 13.0 ppg While drilling through fault, severe to total losses expected – LCM strategy in place Combination of 2.5ppb Safe Carb 20 & 2.5ppb Safe Carb 40 would be added to seal off across permeable formations

SL-1 – 12-1/4” – 4,450’ to 9,385’ MDRT (cont.) Drilling fluid: ULTRADRIL Key products: KCl, Ultrahib, Idcap D, Flo-Vis Plus, Polypac UL Key issues: Lost circulation through Fault, Hole instability, Bit balling, Hole cleaning Ultrahib concentration 2.5-3.0% v/v and the KCl at 8-10% w/w, to achieve a good level of inhibition in the system Idcap D encapsulator at 2-3 ppb to prevent cuttings dispersion 6 RPM: 10-14 Fluid loss should be maintained <5cc API by using 2.5 - 3.0 ppb Polypac UL

●RIH with Open End DP/ Use Well Commander SL-1 – 12-1/4” – LCM Strategy The LCM decision tree should be consulted for dealing with any losses and loss circulation material will be available on location. Pill options for Partial to Severe losses: 20bph < Dynamic < 100bph Stop drilling. ● Spot 50 bbl LCM pill @ 40 ppb - QUICKSEAL M 16 ppb - MIX-II M 7 ppb - MIX-II C 7 ppb - SAFE-CARB 250 at 10 ppb ●RIH with Open End DP/ Use Well Commander ● Spot 75 bbl LCM pill @ 100 ppb. - QUICKSEAL M at 25 ppb - QUICKSEAL C at 40 ppb - MIX-II M at 10 ppb - MIX-II C at 10 ppb - SAFE-CARB 250 at 15 ppb

SL-1 – 12-1/4” – LCM Strategy (cont.) The LCM decision tree should be consulted for dealing with any losses and loss circulation material will be available on location. Pill options for Partial to Severe losses: 20bph < Dynamic < 100bph ●RIH with Open End DP/ Use Well Commander Spot 50 bbl StopLoss pill @ 50 ppb StopLoss at 50 ppb PUMP FORM-A-SQUEEZE/ FORM-A-BLOK 50 bbl pill (separate mixing/squeezing procedure attached)

SL-1 – 8-1/2” – 9,385’ to 11,006’ MDRT Drilling fluid: ULTRADRIL Key products: KCl, Ultrahib, Idcap D, Flo-Vis Plus, Polypac UL Key issues: Hole instability, Bit balling, Wash out Wide density range 10.0 – 13.5 ppg Volume carried forward from 12-1/4” – conditioned to ULTRADRIL specs Ultrahib concentration 2.5-3.0% v/v and the KCl at 8-10% w/w, to achieve a good level of inhibition in the system Idcap D encapsulator at 2-3 ppb to prevent cuttings dispersion

SL-1 – 8-1/2” – 9,385’ to 11,006’ MDRT (cont.) Drilling fluid: ULTRADRIL Key products: KCl, Ultrahib, Idcap D, Flo-Vis Plus, Polypac UL Key issues: Hole instability, Bit balling, Wash out 6 RPM: 10-12 Fluid loss should be maintained <5cc API by using 2.5 - 3.0 ppb Polypac UL Combination of 2.5ppb Safe Carb 20 & 2.5ppb Safe Carb 40 would be added to seal off across permeable formations

KL-1, SL-1 Mud Program Summaries Questions? Thank You!