Custody Transfer и метрология для нефти и газа — Pro meter
Legal Shield • Инжиниринг • Аккредитованные лаборатории
Custody Transfer and Metrology for Oil and Gas — Pro meter
Legal Shield • Engineering • Accredited Laboratories
Pro meter EM Series · Custody Transfer Metrology
Pro meter EM Modules for Custody Transfer Metrology
A–Z Technical Guide for Oil & Gas Custody Transfer Projects
Professional engineering modules covering the full lifecycle of an oil or gas custody transfer project — from Terms of Reference, tender and FEED through design, supply, commissioning, verification, operation and audit.
The EM series is arranged by project lifecycle and engineering task — not by module number. Its central axis is metrological assurance of the commercial measurement result, supported by engineering, documentation, traceability, laboratory work, operational control and Legal Shield.
EM Catalogue
EM Module Catalog
Each EM module addresses a defined engineering task within the custody transfer project lifecycle — from technical requirements and design decisions to verification, operation, audit and development.
| ID Module | Technical Scope / Practical Application | Status / Access |
|---|---|---|
| Initiation EM-10 Metrological Support |
Metrological Assurance for Commercial Operations
Defines the metrological assurance framework for commercial operations: measurement, verification, laboratory activities, protocols, certificates, traceability and the commodity transfer result as one integrated system. Intended for project managers, technical directors and decision-makers. |
Available Public material / professional consultation: available on request. |
| Tender EM-2 Tender & Bidding |
The Tender as the Project's First Technical Act
Shows which requirements need to be set before choosing a supplier: metrology, the laboratory, the verification scheme, contractor qualifications, FAT/SAT, documents and the responsibility of each party. |
In progress Tender checklist: available on request after preparation. |
| Pre-design EM-5 Pre-Design |
Terms of Reference, FEED and Measurement Method Selection
Provides the practice of early decisions: measurement method, accuracy class, flowmeter selection, requirements for the prover, the laboratory, the backup scheme and the future evidentiary base. |
Available Risk Checklist / engineering review: available on request. |
| Systems Engineering EM-3 Engineering A–Z |
Handbook for the Lead Metrology Engineer
The full custody transfer metering station route: pre-design, design, implementation, FAT/SAT, commissioning, trial operation, maintenance and audit. The visitor sees where the metrology engineer must drive decisions, and where costly mistakes arise. |
Available A–Z review package: available on request. |
| Design EM-6 Design |
Design of the Custody Transfer Metering Station
Breaks down process technology, instrumentation and automation, SCADA, civil works, power supply, measurement mathematics, and how each project section affects the accuracy of the commercial result. |
In progress Engineering review: available after preparation. |
| Supply / OEM EM-17 Engineering Interaction |
Interaction Between the Customer, Supplier, OEM and EPC
Shows how the factory engineer, the receiving party, the dealer, the engineering organization and operations staff need to align decisions so the equipment works under the facility's real conditions. |
Available Meeting / workshop format: available on request. |
| Implementation EM-7 Start-Up |
Construction, Commissioning, SAT and Start-Up
The visitor gets the control sequence: installation, loop check, commissioning, algorithm verification, initial verification, baseline, SAT and the first commercial result. |
In progress FAT/SAT checklist: available after preparation. |
| Verification Scheme EM-12 Verification Scheme |
Traceability: From Standard to Commodity Transfer Act
Explains the traceability chain: standard → laboratory → prover → mass meter → flow computer → act. This is the foundation of the measurement result's legal force. |
In progress T / P / ρ / V verification scheme: in preparation. |
| Protocols EM-13 Verification Protocols |
Verification, Calibration and Legal Shield Protocols
The central practical module: mass meter, prover, densitometer, pressure, temperature, flow computer, standards, calculations, archive and the evidentiary chain. |
Available Public / NDA Protocol Pack: available on request. |
| Accuracy EM-11 Error & Uncertainty |
Error, Uncertainty, MPE and GUM
Provides a clear bridge between the technical calculation, the laboratory certificate, the contract and a dispute. The visitor learns where to apply MPE, where to apply GUM, and how to defend the result. |
Available Article / one-page / consultation: available on request. |
| Accuracy Improvement EM-14 Accuracy Improvement |
Methods for Improving Accuracy and Measurement Assurance
in Custody Transfer Metering Systems
Practical Pro meter methods for improving the accuracy and reliability of custody transfer measurement: proving, meter-factor linearization, zeroing, elimination of systematic error, equipment configuration, redundancy, alarm logic, measurement analysis and DataFeedback. |
Published Public Professional Edition and NDA Expert Edition are available. Public €49 · NDA €450 Open EM-14 → |
| Instruments EM-15 Instruments Overview |
Core Instruments of the Custody Transfer Metering Station
Mass meter, prover, densitometer, pressure and temperature sensors, flow computer — the place of each instrument in the system, its contribution to the result, and its relation to verification. |
In progress Public edition: in preparation. |
| QCS / Quality EM-22 Quality Control Skid |
Quality Control Skid and In-Line Density
Gives the engineering link between product quality and commercial mass: sampling, densitometer, CTL/CPL, thermal stability, protocols, the laboratory and Legal Shield. |
In progress NDA-ready version: in preparation. |
| Laboratory EM-8 Laboratories |
Laboratory, Methods and Flow Computer Verification
Shows the role of the accredited laboratory, standards, verification methods, FloBoss S600+ protocols and practical control of all measurement channels. |
In progress Laboratory checklist: in preparation. |
| Field Verification EM-21 Verification Field |
Procedure for On-Site Verification
A desk-reference logic for the metrology engineer: preparation, standard certificates, on-site work, protocol-based measurements, analysis, the report and recommendations. |
In progress Field verification module: in preparation. |
| Maintenance / Operation EM-16 Technical Maintenance |
Maintenance of the Custody Transfer Metering Station
Scheduled maintenance levels 1/2/3, preparation for verification, proving, the protocol archive, the maintenance contract, diagnostics and the system's readiness for the result to be accepted. |
Available Maintenance audit / checklist: available on request. |
| Data EM-9 Data & Reporting |
Fiscal Data, Reporting and Audit Trail
The data lifecycle: raw data, processing, validation, approval, data substitution, archiving, fiscal reporting and integrity protection. |
In progress L0–L3 data model: in preparation. |
| Documents EM-4 Documentation |
Documentation as Management and Financial Protection
Terms of Reference, design, FAT/SAT, protocols, certificates, archives, seals, software versions, checksums, signatures and the evidentiary matrix for audit or dispute. |
In progress Document matrix: in preparation. |
| Audit EM-18 Commission & Audit |
Commissions, Remote Audit, Field Audit and Legal Shield
A practical service module: NDA, document checklist, analysis, a report for decision-makers, an engineering report, the commission, roles, findings and the next stage of work. |
Available Diagnostic / Remote Audit: available as a service. |
| Development EM-19 Perspectives & R&D |
Development of Custody Transfer and Pro meter R&D
Trends: GUM, digitalization, Legal Shield, DataFeedback, new configurations, test rigs, compact provers, publications, institutes and paid co-authorship. |
R&D draft NDA only / strategic discussion. |
| Terms EM-20 Glossary |
RU / EN / LV Glossary for the EM Series
A unified terminology base: custody transfer, the custody transfer metering station, verification, calibration, MPE, uncertainty, traceability, Legal Shield and Pro meter's engineering definitions. |
Draft Terminology base: in preparation. |
Lifecycle Map
EM Modules by Custody Transfer Project Lifecycle
The EM catalog above shows the individual engineering modules. This lifecycle map shows where those modules support the custody transfer project — from project initiation and technical requirements through design, implementation, operation, audit and development.
Project and Facility Launch
The commercial measurement task is defined: product, facility purpose, responsibility boundaries, parties, acceptance of the result and the documents required to support the transaction.
Tender and Contract Framework
Technical requirements, responsibilities and acceptance criteria are established before supplier selection, including the roles of the Customer, Supplier, EPC, laboratory and service organizations.
Pre-Design, Terms of Reference and FEED
The measurement method, accuracy requirements, verification concept, laboratory route, traceability requirements and future evidentiary base are established before detailed design.
Measurement System Design
The custody transfer measurement system is developed: process layout, instruments, calculation algorithms, flow computer configuration, SCADA, archives, redundancy and control points.
Supply, OEM, Factory and FAT
Equipment, documentation and factory solutions are checked against the Terms of Reference, verification requirements, metrological framework and real operating conditions of the facility.
Implementation, SAT and Commissioning
Installation, loop checks, commissioning, SAT, initial verification, baseline data and the first commercial measurement result are brought together into one controlled commissioning process.
Operation and Maintenance
Routine operation combines maintenance, proving, verification, laboratory work, protocol and archive control, flow computer operation, event management and continued reliability of the result.
Audit, Claims, Improvement and R&D
The complete measurement result is reviewed through protocols, MPE/GUM, traceability, fiscal data, archives and responsibilities of the parties, followed by corrective actions, accuracy improvements, modernization and further development.
Cross-Cutting EM Modules Across the Lifecycle
Some engineering topics are not limited to one project stage. They support the complete lifecycle and connect the technical, organizational, documentary and metrological parts of the custody transfer system.
First Technical Review
What to Send for the First Review
An initial technical review can begin with a brief description of the custody transfer facility, the current project stage and a small set of key documents. This is usually sufficient to identify the relevant engineering questions and the EM modules connected with them.
Facility and Project Stage
Facility purpose, product, flow direction, principal participants and current stage: concept, tender, FEED, design, FAT, installation, commissioning, operation, audit, upgrade or claim.
Terms of Reference, Tender Package, FEED or Design
Terms of Reference, tender documents, FEED, P&ID, layout, instrument list, metrology section and requirements for measurement, verification, the laboratory and the commercial result.
Measurement System Composition
Flowmeters, prover, densitometer, pressure and temperature instruments, flow computer, SCADA, quality control skid, measurement lines, redundancy, archives and control points.
Verification, Calibration and Traceability
Verification and calibration certificates, protocols, proving data, meter factor records, laboratory documents, reference standards, validity periods and the traceability scheme.
Flow Computer, SCADA and Fiscal Data
Hourly and daily reports, configuration summaries, alarm and event archives, software versions, checksums, raw data, replacement data, fiscal reporting and the audit trail.
Product Quality and Laboratory
Density, temperature, sampling, water content, laboratory reports, analysis methods, quality control skid data, samplers and documents confirming batch or product quality.
Maintenance, Operation and Event History
Maintenance schedules, work logs, instrument replacements, interventions, sealing records, incident events, recurring alarms and preparation for the next verification.
Main Engineering Question or Risk
The question to be resolved: accuracy, MPE/GUM, verification, a protocol, design decision, FAT/SAT readiness, disputed data, a claim, audit, upgrade, documentation issue or NDA-level analysis.
Minimum Starter Package
A first review does not require the complete project archive. A useful starting package normally consists of a brief facility description, a P&ID or system diagram, an instrument list, one representative protocol, one commercial or fiscal report, and a clear description of the current engineering question.
Confidentiality: the first review can begin with anonymized materials. Full protocols, archives, calculation tables, project-specific information and proprietary technical data can be reviewed after agreeing the scope, contract and NDA where required.
Request a First ReviewRelated Routes
Related Pro meter Pages
The EM Module Series is one part of the wider Pro meter custody transfer knowledge system. Use the related routes below for the overall Technical Guide, custody transfer engineering, verification and calibration, Legal Shield, professional services and direct project contact.
Technical Guide
The overall structure of the Pro meter authored Technical Guide: the EM series, its engineering logic, module purpose and access levels — Public, Professional and NDA.
Open Technical GuideCustody Transfer
The core technical route for commercial custody transfer: metrological assurance, measurement systems, commodity transactions, responsibilities of the parties, operation and acceptance of the result.
Open Custody TransferLegal Shield
The evidentiary side of the commercial measurement result: protocols, certificates, archives, signatures, traceability, software records, audit trail, claims and dispute preparation.
Open Legal ShieldCalibration & Verification
Verification and calibration practice: standards, traceability, laboratory routes, protocols, certificates and practical work with operating custody transfer measurement systems.
Open Calibration & VerificationProfessional Services
Working formats for a real engineering task: diagnostic session, document and protocol review, remote or field audit, technical memo, training, NDA analysis and project support.
Open ServicesProject Contact
The direct entry point for selecting an EM module, discussing a project stage or engineering problem, requesting a first review, audit route, NDA discussion or project-specific support.
Contact Pro meterHow the Pro meter Routes Work Together
EM Modules organize the engineering knowledge by custody transfer project lifecycle and technical task. Technical Guide explains the overall knowledge system. Custody Transfer provides the core technical context. Calibration & Verification covers traceability and practical metrological work. Legal Shield connects the technical result with its evidentiary base. Services and Contact turn the relevant knowledge into a specific review, audit, consultation, training or project assignment.
Start with Pro meter
Request an EM Module, Review, or NDA Discussion
Pro meter helps identify the relevant EM module, determine the custody transfer project stage and define the appropriate working format — from a diagnostic session or technical review to an audit, training assignment or NDA engineering package.
EM Module Selection
Identify the EM modules relevant to your project stage: tender, FEED, design, supply, commissioning, verification, operation, audit or development.
Diagnostic Session
A focused 60–120 minute technical discussion covering a defined question such as accuracy, verification, protocols, traceability, MPE/GUM, documentation or Legal Shield.
Technical or Audit Review
Review of selected documents, protocols, reports, archives, technical decisions, responsibilities of the parties and the evidentiary basis of the commercial measurement result.
NDA Engineering Discussion
For closed engineering material: real protocols, calculation models, facility-specific information, technical scenarios and proprietary Pro meter solutions.
The first contact can begin with anonymized materials. Full protocols, archives, calculation tables, facility-specific information and R&D materials can be reviewed after agreeing the scope, contract and NDA where required.