Exploration Well Schedule Optimizer

Stig-Arne Kristoffersen2010

Exploration Drilling Schedule Optimization System

EDSOS

Drilling Schedule

r

Task Tracker

Pre-Well Approval

Well Approval

Post-Well Approval

Lead and Prospect

Generation

Lead and Prospect Review

E-WAP Drilling well

DiscoverySuspendAbandon

Flex based GUI

GIS

Drag and Drop

Customized Views

Active and Back-Up wells

Optimization

2 main components required for effective and efficient, real-time decision

making

Exploration Drilling Schedule Optimization System

TASK TRACKER

Pre-ApprovalWell

ApprovalPost-

Approval

Lead and Prospect

Generation

Lead and Prospect Review

Approval Control System

Drilling

DiscoverySuspendAbandon

Exploration Drilling Schedule Optimization System

DRILLING SCHEDUL

ER

Flex based GUI

GIS infrastructure/topogra

phy

Drag and Drop

Customized Views

RegionOperational

Planning

TeamInterprete

r

Region TeamInterprete

r

Exploration

Exploration

Active and Back-up Wells (include and/or

not)

Optimization

1. Manually drag and drop wells into well slots

2. Optimizer will run scenarios based on constraints in metrics

REAL TIMEIMPACT

OF CHANGES

http://www.actenum.com/Actenum_works_with_other_common_software_tools

Exploration Well Schedule Optimizer (EWSO)

EXPLORATION OBJECTIVES• Replace Oil Production

• Increase Gas Reserves

OPTIMIZATION and IMPACT ANALYSIS

• Optimize the Drilling Schedule based on proposed changes to one or more Metrics.

• Analyze the impact of proposed changes to Well Slot Allocation and/or Metrics.  

• Most metrics are variable and EWSO must have the capability to run sensitivities to analyze the impact of various possibilities. 

• Some of the Metrics are fixed (e.g. Budgets and Rig Years) and therefore, EWSO must have the capability to display the impact of proposed changes on them. 

will facilitate real-time Impact Analysis and Optimization

to meet Objectives

OPTIMIZATION ENGINE

Oil Volume* Onshore

Region 1 Region 2 Region 3

Offshore Region 1 Region 2 Region 3

Stratigraphic split Exploration by regions if required

Unconventional resources Exploration by regions if required

note: applies to exploration wildcat and delineation wells

    * risked mean

Exploration Well Schedule Optimizer (EWSO)

METRICS

critical factors measured to evaluate performance

relative to Objectives

Gas Volume* Onshore

Region 1 Region 2 Region 3

Offshore Region 1 Region 2 Region 3

Stratigraphic split Exploration by regions if required

Unconventional resources Exploration by regions if required

note: applies to exploration wildcat and delineation wells

    * risked mean

Exploration Well Schedule Optimizer (EWSO)

METRICS

critical factors measured to evaluate performance

relative to Objectives

Drilling Costs Budget

Drilling Schedule Rig Years Well Slot Allocation (may be scheduled or contingent)

Drilling Logistics Rig Move Distances onshore and time/ contracts for

offshore

Drilling Rig Capability Gas or Oil Onshore or Offshore Sour Spec (H2S) Depth Rating - horsepower for onshore, rig type for

offshore

Exploration Well Schedule Optimizer (EWSO)

METRICS

critical factors measured to evaluate performance

relative to Objectives

BUSINESS RULES FOR OBJECTIVES AND METRICS

Well Slot Allocation geographic limitations for rigs gas versus oil rig and oil versus gas rig change maximum limit of mobilization distances and costs activity distribution between divisions and oil and gas will allow exploration wells to be moved, but not development

wells will allow exploration wells to be slotted between development

wells in this case, approval will be required from Production on moves involving

changes in development well schedule

will not allow wells to be moved into the 4-6 month window prior to spud

will not allow wells to be moved into 6 month window prior to spud unless staking and/or site preparation has been initiated/approved

Portfolio Profile risk profile of active wells in Drilling Schedule (POS and

objectives) adherence to Exploration Strategies (focus areas)

must be built into EWSO to ensure that proposed changes are technically feasible,

and in compliance with Business and Operating Plans,

as well as Aramco policies and procedures

Exploration Well Schedule Optimizer (EWSO)

Exploration Well Schedule Optimizer

Stig-Arne Kristoffersen2010

optimizes drilling schedule tracks well planning and operations activities

performs real-time impact analysis of proposed changes

enables effective, efficient decision making