DDR Drilling and Well model Status core group

DDR Drilling and Well model Status – core group meeting

Re-use of existing drilling and well model An assembly of downhole tubulars and equipment required to enable safe and efficient production from an oil or gas well. WELL COMPLETION COFO WELL CASING WELL LINER COFO WELL CONDUCTOR CASING WELL TUBING COFO WELL ASSEMBLY WELL INTERMEDIATE CASING WELL CASING ASSEMBLY COIPO WELL CONDUCTOR CASING ASSEMBLY WELL LINER ASSEMBLY COIPO WELL SURFACE CASING ASSEMBLY COA WELL TUBING ASSEMBLY COIPO WELL PRODUCTION CASING ASSEMBLY WELL COMPLETION STRING CLASS 14 January 2011 © Det Norske Veritas AS. All rights reserved. WELL COMPLETION STRING HANDLING COIPO WELL PRODUCTION CASING WELL SURFACE CASING WELL COMPLETION ASSEMBLY Activities related to making up/testing/running/ landing/pulling of the completion string /tailpipe and/or production tubing, including setting and testing of production packer(s) run in conjunction with the string. http: //www. osh. dol. govt. nz/publications/booklets/geothermalwells 2005/pg 2. shtml 2 WELL INTERMEDIATE CASING ASSEMBLY

Extending the drilling and well model with activities, runs and periods WELLBORE DRILLING ACTIVITY #N-4 REPORTING PERIOD #n DEPTH AT START DRILLING REPORT PERIOD #m A REPORTING PERIOD in this context is by definition fixed to be 24 hours. Starting times may however differ, e. g. 00: 00, or 06: 00. HOLE MADE DURING DRILLING REPORT PERIOD DRILLING ACTIVITY #N-3 DRILLING ACTIVITY #N-2 DRILLING ACTIVITY #N-1 BIT MMM RUN #i BIT NNN RUN #j DEPTH AT START DRILLING ACTIVITY #N HOLE MADE DURING DRILLING ACTIVITY #N HOURS DRILLED DURING RUN DRILLING ACTIVITY #N REPORTING PERIOD #m DEPTH AT END DRILLING ACTIVITY #N DEPTH AT END DRILLING REPORT PERIOD #m DRILLING ACTIVITY #N+2 14 January 2011 © Det Norske Veritas AS. All rights reserved. BIT MMM RUN #i+1 DRILLING ACTIVITY #N+3 BIT RUN IN REPORTING PERIOD HOURS DRILLED IN REPORTING PERIOD BIT NNN RUN #j+1 REPORTING PERIOD #n BIT NNN RUN #j+2 REPORTING PERIOD #o REPORTING PERIOD #p 3

Main classes and individuals HOLE WELLBORE DRILLING CEMENT GROUT DRILL BIT WELLBORE DRILL BIT RUN WELLBORE CEMENTING WELLBORE CEMENT GROUT ROCK DRILL BIT THE ACTUAL WELLBORE DRILL BIT RUN THE ACTUAL WELLBORE CEMENTING THE ACTUAL CEMENT GROUT THE ACTUAL ROCK DRILL BIT WELL CASING ASSEMBLY THE ACTUAL WELL CASING ASSEMBLY REPORTING PERIOD BOREHOLE CASING ACTIVITY (New entity type) WELLBORE WELL CASING ACTIVITY DRILLING RIG REPORT THE ACTUAL WELLBORE THE ACTUAL WELL CASING ACTIVITY THE ACTUAL RIG #NN THE ACTUAL REPORT WELL CASING STRING LINING WELL TUBING THE ACTUAL WELL CASING STRING THE ACTUAL LINING THE ACTUAL WELL TUBING (New entity type) DRILLING CEMENTING EQUIPMENT CLASS 14 January 2011 © Det Norske Veritas AS. All rights reserved. 4 ARTEFACT CLASS

Design Basis – not all concepts belonging to a section belongs logically to the physical item the section groups information about § Bit Data Section - The following entries are concerned with the “drill bit” - Size (in) - Model - Dull grade - The following entries are concerned with the “activity” - Hours drilled (hrs) - Hours drilled (Run) (hrs) - Bit/Run number - The following entries are concerned with the “hole” - ROP (m/hr) Total Hole Made (Run) (m) Total Hours drilled (Run) (hrs) Hole Made (Run) (m) MD ln (m. KB) MD Out (m. KB) 14 January 2011 © Det Norske Veritas AS. All rights reserved. 5

DDR “Drill bit” = ROCK DRILL BIT DIAMOND DRILL BIT SCREWTYPE DRILL BIT DULL ROCK DRILL BIT CORE DRILL BIT FIXED CUTTER DRILL BIT 13 3/4 COID ACME INC. WIDGET ALPHA COID ROLLER CONE DRILL BIT ROCK DRILL BIT 14 3/4 NS ROCK DRILL BIT 36 NS ROCK DRILL BIT 14 3/4 NS ACME INC. WIDGET ALPHA NS 14 3/4 NS THE WELLBORE DRILL BIT 14 January 2011 © Det Norske Veritas AS. All rights reserved. 6

Modelling and mapping example - DDR Rock Drill Bit Size (in) DAILY DRILLING REPORT ROCK DRILL BIT SIZE CODE ASSIGNMENT CLASS DAILY DRILLING REPORT ROCK DRILL BIT SIZE CODE STRING CLASS DAILY DRILLING REPORT ROCK DRILL BIT CLASS COCOId ARTEFACT DRILL BIT ? ? ? BIT Size (in) 14 3/4 represented pattern COId ROCK DRILL BIT 14 3/4 NS DDR ROCK DRILL BIT SIZE TEMPLATE SIGNATURE “OBJECT IN FOCUS” A ‘template input list’ that is the input required to state the nominal size of an actual ‘wellbore drill bit’. Role 1: The identifier for the actual ‘wellbore drill bit’, Role 2: The size code of the actual ‘wellbore drill bit’. The SW shall create the anonymous object and make it a subclass of the COIPO corresponding to the size code, and make the actual ‘wellbore drill bit’ a member of the anonymous class. 14 January 2011 © Det Norske Veritas AS. All rights reserved. 7 The wellbore drill bit

Status § Overall: The reference data modelling effort is well on its way § Issues - The model puts on some restrictions - Relationships and classes of relationships have to have their ends defined - Most “properties” and “attributes” are relationships - We therefore need to put a taxonomy of “objects” in place before we can start to deal with “attributes” and “properties” - Alignment of data from previous projects - In principle all “properties” and “attributes” have been dealt with as “objects” - There were not sufficient resources and experience available at the time when much of the data was migrated from Snapshot E (which did not make this (necessary distinction) - Template methodology was not in place. Data that should have been templates were therefore put other places - Most of the data is well defined, it just needs a different home - Some inconsistent naming and scope across projects made it hard to get a grip on what was there from before so that all the data from the IIP, DDR, and DPR projects can be used together - But a substantial set of data is there and is well defined - Migration to other entity types is required in some areas. This has been done to the extent necessary. - A substantial effort has gone into making this consistent, and we now have a good staring point - Developing and extending the current well/wellbore model has been required in order to put a model for both objects and activities in place 14 January 2011 © Det Norske Veritas AS. All rights reserved. 8

Safeguarding life, property and the environment www. dnv. com 14 January 2011 © Det Norske Veritas AS. All rights reserved. 9