Laboratory Services

Robertson runs one of the largest geological, environmental and machine condition monitoring laboratories in the world.

Established at the inception of Robertson Research in 1961, the laboratories now boast a complete range of diagnostic and interpretive services that range from upstream petroleum services through to environmental testing and the "Wearcheck" oil condition monitoring and predictive maintenance programmes.

In addition, included in this section of the web site, are the details concerning Robertson's extensive core handling, core storage and core laboratory services.

Research and Development

Robertson recognises the need for maintaining innovative research and development programmes to ensure core analysis keeps abreast of changing technology and requirements.

Recent Posts

Evaluation analysis of freezing unconsolidated cores

Robertson has carried out extensive research into the effects of freezing (at various rates etc.) on unconsolidated core. This industry funded research programme has become a major contribution to the current handling and analysis practices for unconsolidated and friable core. Through this research and extensive experience Robertson has become the industry recognised leader in unconsolidated core analysis.

Resistivity index of shaly sands at low brine saturation

The main objective of this project which was completed in the first part of 1998 was to measure electrical properties down to the lowest brine saturations achievable. It is at these low brine saturations that the electrical properties of the clays cause the greatest anomalies in the downhole resistivity logs. Samples with varying clay content and type and brines of different salinities were studied. New techniques and equipment have been developed in conjunction with this research.

Electrical impedance tomography (EIT)

It is widely recognised within the industry that confidence in core analysis data (especially relative permeability measurements and continuous injection resistivity index) is greatly enhanced when the test is performed with the aid of in situ saturation monitoring. However, methods currently available for routine analysis of core samples have severe limitations.

Electrical impedance tomography is becoming increasingly established as the imaging technique of first choice in a range of applications in a variety of disciplines, and the large difference in electrical properties of reservoir fluids used in core analysis make it an ideal tool for saturation monitoring.

Robertson, in conjunction with the University of Aberdeen and the Geological Survey of Denmark and Greenland, is commencing a project aimed at the development of EIT based saturation monitoring equipment.

Special Core Analysis

The planning of special core analysis (SCAL) studies is often left until the conventional core analysis is completed. This is often too late as the quality of any SCAL study will depend upon the initial sample conditions. Ideally the objectives of any SCAL study should be defined prior to coring to ensure that the optimum coring, core handling and core preservation techniques are used.
The following procedures may be undertaken as the first phase of testing:

  1. sample selection and preparation
  2. sample cleaning and drying
  3. sample saturation

In a situation where there is minimal supporting information it is prudent to undertake a pre-study prior to embarking on a full SCAL test programme. The aim of the study is to determine which variables are the most influential within a particular rock fluid system.
The pre-study should be used to identify the following information:

  1. wettability
  2. stress sensitivity
  3. relative permeability and rate sensitivity

Having undertaken the pre-study, the development of the main study can proceed with the knowledge that the system sensitivities are known and included.

Experience by Area

Three decades of experience in a world-wide market-place have provided us with an unparalleled global knowledge base. We have specific regional knowledge in most mature areas of the world and of many emerging exploration plays ... a knowledge which adds enormous value to both our routine and custom-made projects and helps in problem solving for exploration, development and production.

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LATEST NEWS

Tellus Houston User Group

For those of you who were unable to attend, or for those that want to distribute the material, the presentations and training modules are now available on-line.


Launch of GIR Database

Robertson is pleased to announce that it is building a Geochemical Information Repository (GIR) which will provide customers with global digital geochemical data delivered over the Internet.


UNLOCK YOUR ROCKS

Our interactive problem page might be the key to solving your Reservoir Geology problems. Find out what effective and innovative solutions we can prescribe.