1. Symbols relationship class of relationship class of class of relationship Name RDS Identifier/URI Relationships Classes Name Level 2/Class of class Level 1/Class of individual COICOI COIPO Entity type (when relevant) Level 0/Individual COIPO Entity type (when relevant) # Name Exist in RDL Name To be added to RDL Name To be deleted from RDL Name To be modified COICOI Entity type (when relevant) COICOI Entity type (when relevant) COICOI Entity type (when relevant) Template Signature Instance CLASS IN FOCUS COIPO Object in focus

2. 6 “Sectional drawing”, Generic STRING IN ROLE 2 id COI COCOI id OR/CORWS ES OR/CORWS This involves establishing a relationship from the ‘class in focus’ to a string that is said to be an identifier of a class of “documents” that contains a sectional drawing for members of the class. It is not known to us what the document structure used by the actual company is, and there is no structure that is “standard” across companies. In addition, the string we have been presented may just be a “local” name used in the sending application. Hence we are in this context not in the position to make any further statements regarding the string. This should therefore only be modelled for particular organisations, and not be part of a standard RDL. The only correct approach is therefore to reference a document identification code. This construct does not include any “context” data; e.g. classification of the string or the class of relationship to record who made the statement. (If the sending application has additional information we may state it, but using a different template signature). ELECTRICAL PRESSURE TRANSMITTER COIPO ARTEFACT CLASS IN FOCUS ABCDEFGHI DOCUMENT IDENTIFICATION CODE ARTEFACT IN FOCUS. DOCUMENT IDENTIFIER CODE STRING IN FOCUS. DOCUMENT ABCDEFGHI COIO It is not known to us what the document structure used by the actual company is, and there is no structure that is “standard” across companies. This should therefore only be modelled for particular organisations. The only correct approach is therefore to reference a document number HOLD ? 1 2 SECTIONAL DRAWING IDENTIFIER CODE STRING CLASS SECTIONAL DRAWING REFERENCE (RDS1465589251) CORWS IDENTIFIER REFERENCE (RDS1376042241) CORWS NOTE The modelling of the product classes, document classes etc. is out of scope for this template signature. It can be added as an extension without violating the present modelling, which is a “shortcut” for the relevant part of the full model, and still valid when the additional data is added.

3. id Datum Reference I COI COCOI id OR/CORWS ES OR/CORWS DRILL BIT 13 3/4 NPS AI DRILL BIT THE ACTUAL DRILL BIT NOW ABCDEFGHI NNNNNN IDENTIFICATION CODE ARTEFACT IN FOCUS. IDENTIFIER STRING IN FOCUS. KELLY #NNNNNNN NOW AI 1 2 (DRILL BIT?) DATUM IDENTIFIER REFERENCE (RDSXXXXXX) CORWS KELLY COIPO KELLY BUSHING IDENTIFIER STRING CLASS STRING IN ROLE 2 RF LENGTH TRUE VERTICAL DEPTH TO MEASURING POINT RELATIVE RKB (RDS17658690) 455 m IP P TRUE VERTICAL DEPTH RELATIVE TO RKB TEMPLATE SIGNATURE Role 1: THE ACTUAL “WELL OBJECT” NOW Role 2: STRING IN ROLE 2 Role 3: TRUE VERTICAL DEPTH TO MEASURING POINT RELATIVE Role 4: 455 Role 5: METRE 3 Possessor Property IDENTIFIER REFERENCE (RDS1376042241) CORWS “WELL OBJECT” DATUM IDENTIFIER REFERENCE (RDSXXXXXX) id TRUE VERTICAL DEPTH RELATIVE TO RKB (RDS17658555) “WELL OBJECT” 4 5 COIPO COFO SPD COIP ISO 15926-7 INDIRECT PROPERTY ISO 15926-7 IDENTIFICATION ISO 15926-7 PROPERTY QUANTIFICATION ++++ * * RKB? KELLY = KELLY BUSHING? KELLY DRIVE ROTARY TABLE DDR DATUM CLASS

4. “OBJECT IN FOCUS” 10 Mapping of “text attributes” IP-Class 1 9 RDS1387433181 RDS206324 RDS1400422601 RDS1007459 RDS476369941 RDS4755991513 ATEX group ATEX category Temperature class Gas-group Explosion protection COCOId IEC 60529 INGRESS PROTECTION CODE ASSIGNMENT CLASS 7 8 This approach is used for all cases where “validation tables” (EqHub terminology) or “standard options” are involved. NB! “Text” attribute is mapped to a specialisation relationship represented COIPO pattern COId 3 IP66 APPARATUS IEC 60529 2 ES IP66 2 ES 2 IP66 ES 2 5 IEC 60529 INGRESS PROTECTION CODE STRING CLASS RF COCOInd 6 IEC 60529 INGRESS PROTECTED APPARATUS CLASS IP6X PPARATUS IEC 60529 IPX6 APPARATUS IEC 60529 4 ARTEFACT INGRESS PROTECTED APPARATUS

5. File for use when mapping IP-class Code used in external applications PCA RDL class name PCA RDL class identifier PCA RDL class description (not necessarily the definition) The RDS# that is presented to EqHub (according to agreement with SHAREcat) is the RDS# for the class IEC 60529 INGRESS PROTECTION CODE STRING CLASS that holds the codes used in external applications. For a particular instance the RDS# for the appropriate member of the class IEC 60529 INGRESS PROTECTED APPARATUS CLASS is used in a transfer file

6. Mapping of Drill bit “Size (in)” Size (in) 1 RDS1387433181 RDS206324 RDS1400422601 RDS16443732 RDSxxxxxxx xxxxx COCOId DRILL BIT CODE ASSIGNMENT CLASS represented COIPO pattern COId 3 DRILL BIT 13 3/4 NPS 13 3/4 NPS ES 2 DRILL BIT CODE STRING CLASS RF COCOInd DRILL BIT CLASS DRILL BIT THE ACTUAL DRILL BIT NOW ARTEFACT COIPO THE ACTUAL DRILLING ACTIVITY THE ACTUAL DRILLED SECTION DRILL BIT SIZE TEMPLATE SIGNATURE Role 1: THE ACTUAL DRILL BIT NOW Role 2: THE RDS# FOR THE CLASS IDENTIFIED BY THE APPROPRIATE MEMBER OF “DRILL BIT CODE STRING CLASS” Role 3: THE APPROPRIATE STRING THAT IS A MEMBER OF “DRILL BIT CODE STRING CLASS” THE PREVIOUS DRILLING ACTIVITY THE ACTUAL CASING STRING SECTION THE ACTUAL CEMENTED SECTION THE ACTUAL CEMENTING JOB

7. Mapping of Drill bit “Size (in)” Code used in external applications PCA RDL class name PCA RDL class identifier PCA RDL class description (not necessarily the definition) DEFINE SIMILAR TABLE FOR DRILL BIT SIZES

8. “Make”, Generic STRING IN ROLE 2 #nnnnnnn id COMPANY COI COMPANY NAME IDENTIFICATION COCOI id OR/CORWS ES PO MANUFACTURING COMPANY NAME REFERENCE (RDS1376057351) OR/CORWS Only indicative. Need further modelling to arrive at a proposed structure Default from the signature/template. HOLD. In the context of this template signature we have assumed that this is not known. IDENTIFIER REFERENCE (RDS1376042241) COMPANY NAME AI DRILL BIT THE ACTUAL DRILL BIT NOW NOTE The modelling of the manufacturing activities, products, company etc. is out of scope for this template signature, but could be added without violating the present modelling, which is a “shortcut” for the full modelling. COMPANY REGISTERED NAME IDENTIFICATION DRILL BIT 13 3/4 NPS ACME INC SUPERDUPER DRILL BIT 13 3/4 NPS id OR

11. id Size Reference ES OR/CORWS DRILL BIT 13 3/4 NPS AI DRILL BIT THE ACTUAL DRILL BIT NOW 1 2 DRILL BIT CODE ASSIGNMENT CLASS (RDSXXXXXX) CORWS DRILL BIT IDENTIFIER STRING CLASS RF LENGTH TRUE VERTICAL DEPTH RELATIVE TO RKB (RDS17658555) 455 m IP P TRUE VERTICAL DEPTH RELATIVE TO RKB TEMPLATE SIGNATURE Role 1: THE ACTUAL DRILL BIT NOW Role 2: STRING IN ROLE 2 Role 3: TRUE VERTICAL DEPTH RELATIVE TO RKB Role 4: 455 Role 5: METRE 3 Possessor Property IDENTIFIER REFERENCE (RDS1376042241) CORWS “WELL OBJECT” DATUM IDENTIFIER REFERENCE (RDSXXXXXX) id TRUE VERTICAL DEPTH (RDS17658555) “WELL OBJECT” 4 5 COIPO COFO SPD COIP ISO 15926-7 INDIRECT PROPERTY ISO 15926-7 IDENTIFICATION ISO 15926-7 PROPERTY QUANTIFICATION ++++ RDSxxxxxxx represented pattern COId 13 3/4 NPS