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Certificate in Petroleum Technology (Level 3)

Petroleum Processing Technology (City and Guilds – Level 3 Certificate)

The course will help anyone with an interest in the oil industry achieve a broad understanding of the operational techniques of petroleum processing and the function and construction of the plant and equipment used in the processing of petroleum reservoir fluids.

The course consists of 10 modules:

• Oil and Gas Separation
• Gas Dehydration
• Petroleum Gas Compression
• Natural Gas Liquids Recovery
• Oil Pumping and Metering
• Injection Water Treatment
• Produced Water Treatment
• Gas Flow Measurement
• Process Flow & P&ID’s
• Oil Treatment (Dehydration)

These stand-alone modules will enable an individual to select those learning materials that suit his or her own particular requirements. Modules can be studied at the candidates own pace and can be studied in any order, but the order is as numbered. The study time needed will vary from one module to another, and from one individual to another. It is likely to be in the range 20 – 40 hours for each module.

Each module will consist of one or more Workbooks, and a “Guide to Open Learning”.

No commitment to enrolling for the complete Petroleum Processing Technology Series is required at any time although each candidate must register for each module. Modules are non-transferrable and can only be assigned to one candidate.

Each module (detailed above) may be assessed by examination and an individual certificate endorsed by City and Guilds awarded to successful candidates.

Each exam which is passed successfully will contribute to one Certificate of Unit Credit towards The Certificate in Petroleum Processing Technology. The Certificate will be awarded after all 10 Certificates of Unit Credit have been accumulated

 The course consists of the following 10 modules:

  1. 1.                                          Oil and Gas Separation

2 Workbooks comprising 6 sections

Study time: 25 hours


  • Headers and Manifolds
  • Theory of Separation
  • Construction of Separators
  • Control of Separators
  • Separator Safety Systems
  • Operation of Separators

2.                                          Gas Dehydration

1 Workbook comprising 4 sections

Study time: 20 hours


  • Water in Natural Gas
  • Auto Refrigeration Processes
  • Solid Desiccant Dehydration
  • Liquid Desiccant Dehydration

3.                                          Petroleum Gas Compression

4 Units each in a separate workbook

Study time: 40 hours

Sections: Unit 1 – AN OVERVIEW

  • Compressor Applications,
  • Basic Principles of Compression,
  • Types of Compressor


  • Design and Construction,
  • Auxiliary Systems,
  • Operation of Reciprocating Compressors


  • Design and Construction,
  • Auxiliary Systems,
  • Operation of Centrifugal Compressors


  • Positive Displacement Compressors,
  • Continuous Flow Compressors

4.                                          Natural Gas Liquids Recovery

1 Workbook comprising 4 sections

Study time: 20 hours


  • The Theory of NGL Recovery
  • NGL Recovery using Compression and Cooling
  • NGL Recovery by Refrigeration
  • NGL Recovery using an Absorption Process

 5.                                          Oil Pumping and Metering

1 Workbook comprising 5 sections

Study time: 25 hours


  • Centrifugal Pumps : terms and concepts
  • Pig Launching Facilities
  • Construction and Operation of Centrifugal Pumps
  • Oil Metering and Sampling
  • Operation of a Typical Oil Pumping and Metering

6.                                          Injection Water Treatment

1 Workbook comprising 4 sections

Study time: 20 hours


  • Reasons for Water Injection
  • Reasons for Treating Injection Water
  • Sea Water Treatment Equipment
  • Operation of a Typical Water Injection System

7.                                          Produced Water Treatment

1 Workbook comprising 4 sections

Study time: 20 hours


  • Problems Associated with Produced Water
  • Basics of Produced Water Treatment
  • Produced Water Cleaning Equipment
  • A Typical Produced Water System

8.                                          Gas Flow Measurement

1 Workbook comprising 4 sections

Study time: 30 hours


  • Gas Flow Measurement Applications and Gas Physics
  •  Fluid Flow Principles
  • Measurement Devices and Methods
  • Orifice Plate Metering

9.                                          Process Flow & Piping and & Instrument Diagram’s

2 Workbooks comprising 7 sections

Study time: 40 hours


  • Plot Plans and Elevation Drawings
  • Process Flow Diagrams
  • Piping and Instrument Diagrams
  • Figures, Illustrations and Symbols

10.                                      Oil Treatment (Dehydration)

1 Workbook comprising 4 sections

Study time: 20 hours



  • Emulsions – Their Nature and Occurrence
  • Principles of Emulsion Treating
  • Dehydration Systems and Equipment
  • A Typical Dehydration System

Cost for the C& G Petroleum Processing Technology (City and Guilds – Level 3 Certificate – 10 10HN units)

(i)                 Cost – Registration, enrolment, tutoring, invigilation of examination – £200 per unit.

Total for C & G Petroleum Processing Technology Level 3 Engineering programme is £2,000.00

The examinations can take place at the Logis-Tech Glasgow Office or at Logis-Tech, Co. Donegal, Eire.  Other venues are Aberdeen.

Students wishing to sit the examinations at other venues should contact Hugo Gallagher at the address below

For more information or advice on the above program.  Please do not hesitate to contact:

Hugo Gallagher

A-1 Technical Training

Logis-Tech Associates

140 Boyd St



G42 8TP

Scotland, UK


Tel No:00 44 (0) 141 423 6911

Email: hugo@logis-tech.co.uk