19% increased drilling efficiency from 61% to 80% between 2010 and 2011

0

500

1000

1500

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3500

4000

4500

5000

5500

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0 24 48 72 96 1201441681922162402642880

500

1000

1500

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3500

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4500

5000

5500

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6500

7000

7500

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

January

February

March

April

May

June

July

August

September

October

November

December

0 10 20 30 40 50 60 70

59

51

47

50

49

49

50

54

46

52

51

50

19%Increased drilling efficiency from 61% to 80% between 2010 and 2011

# OF WELLS MONITORED BY MONTH 2011

% OF EFFICIENCY BY MONTH 2011

CASE STUDY

Reduced numbers of wells from critical to normal condition

Reduce drilling risks using offset well events, logging trends analysis and cross plot in real time

The RTOC provides engineering solutions to increase the control over the drilling process

Real-time engineering empowers the client to prevent and control future drilling events

TRAFFIC LIGHTS METHODOLOGY

CRITICALThe well is classified in Critical status when the drilling operation conditions require significant changes within the original drilling program to reach the goal in the well

ALERTSThe well is classified in Alert status when operative conditions and time are not within range or according to the plan

NORMALThe well is classified in Normal status when operative conditions and time are within range and according to the plan

REAL TIME GEOPRESSURE

IMPACT ON DRILLING OPERATIONS

DECISION MAKING BY APPLYING REAL TIME METHODOLOGY

COST-EFFECTIVE DECISION IN REAL TIME

LATIN AMERICAN NATIONAL OIL COMPANY – RESULT 2011

The system will generate alarms indicating previous drilling events coming from the offset wells in relation to depth, trends and others real time variables

DRILLING PERFORMANCE SYSTEMPore Pressure and Fracture Gradient in real time

4

5

6

Depth vs DaysGeological Column

Well Schematic

Rea

l

Pla

n12 Alerts

09 Proposals

02 Programs

01

Recommendati

ons

24 Average technical deliverables per well

61%

80%

Inve

stmen

t(USD

)

DecisionA

DecisionB

DecisionC

SPWLA 2012

p e t r o l i nk

SPWLA 53rd Annual Logging Symposium, June 16-20, 2012 Cartagena ColombiaRef: Ms. No. SPWLA-D-11-00175

Authors: MBA. Rafael Bermudez Martinez. rafael.bermudez@petrolink.com T: +1 713 686 3443Eng. Concepcion Isidro Olan. concepcion.isidro@petrolink.com

Petrolink Services Inc