What is Sigra?

Sigra is a privately owned company founded in 1994. It is based in Brisbane, Australia, and operates globally. Sigra is involved in all matters to do with the ground.

read more

What we do

Sigra delivers solutions to our clients in all matters related to the ground. We understand what we are dealing with, and we have the capability to examine and analyse it in detail.

read more

Guiding principles

Sigra’s guiding principle is to provide the best solutions possible to its clients. The solution must be feasible, sustainable, appropriate and economically sound.

read more

Industries

Exploration to mine design and operation. Specialising in gas, water and geotechnical aspects. Also covering ventilation and outburst management.

Site investigation specialising in stress measurement, fluid pressure and rock properties. Effective stress-based design specialising in anisotropic, nonlinear rock.

Efficient and accurate exploration methods utilising petroleum reservoir engineering techniques. Design of dewatering for slopes, excavations and underground openings. Deep piezometers.

Stress measurement and rock property determination. Opening and support design, and energy absorbing designs to control rock bursts.

Total exploration programmes to production design of coal seam gas (CBM). Resource and reserve estimates. Gas content measurement for all rocks by coring and open hole gas capture systems.

Design and supervision of exploration/site investigation programmes. Design of directional holes for exploration or production. Manufacture of well control, managed pressure drilling systems and inflatable packers.

Need help to find what you are looking for?Search our site below.

News

  • Sigra Celebrates 25 Years of Innovation and Pushing Boundaries

    April marks Sigra’s 25th year of continued operation throughout Australia and across the globe. On April 1st 1994, Dr. Ian Gray founded Sigra as a one-man engineering consultancy. 25 Years on, Dr. Gray continues to lead the company which has grown into a multifaceted, well trusted organisation with offices in Australia and South Africa that

    April 13, 2019
  • Sigra Committing to Servicing Southern Africa

    Sigra is now operating in Southern Africa in the coal, diamond, CSG and petroleum sectors and expects to be involved in large civil engineering projects by early in 2020. Sigra has established Sigra South Africa (Pty) Ltd based in Johannesburg with operations in different industries servicing the Southern Africa region. These developments follow an increasing demand

    March 6, 2019
  • Sigra at Coal 2019 in Woolongong

    Tim Harvey and Tim Gibbons will attend the conference Coal 2019 at the University of Wollongong on Tuesday and Wednesday 18 and 19 February. Directly after lunch on Wednesday Tim Harvey will present the paper ‘Flow Measurement in Gas Drainage’. This will present an improved option to measure gas flows and the use of these

    February 20, 2019
  • Sigra Visits Melbourne for the ATS Short Course and Presents at AusRock 2018 in Sydney

    In November two of our Sigra engineers attended the three day short course in tunnel design and construction held by the Australian Tunnelling Society. The short course gave a fantastic overview of tunnel design and construction and attracted a plethora of engineers, suppliers and students from across the industry. The mix of delegates resulted a

    December 2, 2018