GeoMEMs Borehole Surveying Resource Centre
This page contains links to sources of information of relevence to those working in, or interested in, borehole surveying.
Most of the information has been gathered by GeoMEM when providing support to customers, or during research for articles for publication.
Some of the links are internal to GeoMEMs web site but most will lead to other web sites (NOTE: GeoMEM are not responsible for the content of, or opinions expressed on, external web sites). Please let us know if a link no longer works.
Reference, Information and Data Sources
Useful sources of information for day to day use in surveying.
- Introduction to Wellbore Positioning - An ISCWA initiative (External Link). Main Author: Prof. Angus Jamieson.
An excellent and detailed coverage of all aspects of borehole surveying, based on the Oil and Gas industry but with major relevance to Mining / Exploration.
- NOAA National Geophysical Data Center - Magnetic field calculator (External Link). Calculate the estimated Earth magnetic field components for your location for any date: Declination; Inclination; Horizontal Intensity; North, East and Vertical components; Total Field.
** This is required data for surveys produced by any magnetic EMS survey tool **
- Adding value to Exploration Boreholes by Improving Trajectory Survey Accuracy, T G Sindle, I M Mason, J E Hargreaves and J H Cloete (2006) (External link, PDF).
An excellent paper for all those involved in surveying and seeking to produce the most accurate surveys they can.
- Drillhole De-Surveying - Steve Henley (2000) (External link). Background and history of the various methods used for de-surveying - with special reference to the Datamine software (Steve was a founding director of, and main programmer for, Datamine). This was published in: Earth Science Computer Applications, v.16, no.2, p.3-5.
- Surveying the Path of Boreholes: A review of Orientation Methods and Experience, P.G.Killeen, G.R.Bernius and C.J.Mwenifumbo (1995) (External link)
- Surveying the Path of Boreholes: A review of Developments and Methods Since 1987. Killeen, P.G., and Elliott, B.E. (1997) (External link, PDF).
- Borehole Geophysics: Exploring the Third Dimension. P. G. Killeen (1997) (External link, PDF).
Downhole geophysics rather than borehole trajectory.
Drilling related Organisations / Associations
- British Drilling Association (BDA) (External Link). For "those who drill holes in the ground, manufacture / supply drilling rigs & equipment, or have a general or real interest in ground drilling".
- Federation of Drilling Specialists (External Link). An "organisation which promotes the drilling industry, best practice, innovation and provide guidance and advice".
Items for those interested in researching the history of, background to, borehole survey instruments.
- Deep borehole surveys and problems M H Haddock (1931) (External Link). Publication available from this in various formats.
Detailed book and study describing the variety of borehole surveying methods known in 1930-1931. Considers the history and development of survey instruments from the mid 1800's up to 1931 (when the first Gyros were making an impact).
There are some fantastic and amazing surveying instruments here, including core orientation apparatus from 1844. Almost everything that we are doing today in borehole surveying and measurement had been thought of and implemented by the 1930's. The main thing that has changed is the technology! What, astoundingly, appears to have changed very little are the pleas for use of surveying tools and concerns about surveying accuracy.
- Early borehole survey instrumentation: 1870-1930 J R Tweedie, GeoDrilling, Sept 2010) (Internal link, PDF). A historical perspective on the development of the tools described in Haddocks book which came out of a lecture given to The Mining Institute of Scotland and Geological Society of Edinburgh in April 2010.
Made available by kind permission of GeoDrilling International.
- Underground Well Surveying, Directed Drilling, Side-Wall Sampling and Polar Core Orientation. G L Kothny (1941) (External Link) (Available via OnePetro - abstract only shown. Payment required for full paper).
The Author, G L Kothny, was working at Sperry Sun at the time so this article is based on petroleum industry research. It also uses some information from Haddocks detailed 1931 book (see above).
- The Fotobor System, Mats T Haglund. (Internal link, PDF) - An Integrated System of Bore Hole Measurement with Depth Prognostication, Curvature Drilling Hole Branching and Core Orientation Within the Field of Diamond Drilling Technique
Document describing the methods, formulae, calculations, theoretical background and other considerations in the development of the Fotobor photographic based, non-magnetic survey instrument.
There is a short Introduction by the inventor, Mats Haglund, written in November 1987, though this is likely to be well after the original document was produced because all the formulae and other information appear in the Fotobor operators manual from 1980.
- The right time, the right people, the right technology or how a survey instrument was born; J R Tweedie (2008) (Internal link, PDF). Original of an article on the development of the Fotobor for GeoDrilling International, February 2008.