Around the world, as ore deposits in the shallow vadose zone are depleted, mining companies are having to extract ore below the water table, where moisture content of the ore is much greater.
This rise impacts each area of the value chain, from resource valuation, design of crusher plants and blending for final shipping.
Therefore, there is a strong business case for understanding in situ ore moisture content, specific yield, specific retention, dry bulk density and matrix density.
There is also a need to quantify moisture content and hydraulic conductivity of the overlying vadose zone because this will guide development of mine dewatering strategies, optimise dewatering lead times through appropriate pump-sizing, and determine influence of surface recharge rate on rise in the water table.
These parameters can be determined using Nuclear Magnetic Resonance (NMR) imaging, which can measure total rock porosity and differentiate clay-bound, capillary-bound and free-fluid volumes.
However, while NMR has been used routinely in the logging of oil and gas wells for decades, uptake by the hard rock mining industry has traditionally been hindered by NMR tool size and cost of the logging service.
Qteq has addressed this capability gap through the development of an advanced short, slim Borehole Magnetic Resonance (BMR) logging tool.
Solution mining is the extraction of useful minerals naturally dissolved in brine.
Commercial brines include shallow brines beneath saline or dry lakes and deep brines from sedimentary basins.
Brines are important sources of potash, lithium, copper and other heavier metals and industrial salts.
Hydrogeology plays a critical role in determining the economic viability and shaping development strategy of brine-mining operations.
In particular, it is necessary to determine vertical and lateral variation in total porosity across the resource and to differentiate the fraction occupied by free (mobile) brine from the remaining fraction occupied by bound (immobile) brine.
Brine flow potential, which depends on hydraulic conductivity, also needs to be quantified.
Qteq is applying iQnomics – the idea that it is possible to transform the relationship between technology excellence and cost performance by the intelligent application of capital and capabilities – to foster the creation of accurate, actionable data, at an appropriate price point previously unattainable.
The responsible and efficient development of natural gas, from coal, requires innovative technical solutions, delivered in high volume, at an affordable price – outcomes that have often eluded the coal seam gas (CSG) industry.
Qteq has amassed a portfolio of products and services that delivers those outcomes to optimise CSG well productivity and boost recovery factors.
We have the experience, perspective and skills to help you make your CSG development produce more gas, faster and with a smaller environmental footprint.
Coal plays an important role as the primary source of energy for the generation of electricity worldwide.
However, the coalification process that converts plant matter to fuel also produces methane and carbon dioxide gases, so the depositional process can leave the coal cleat structure and surrounding formations filled with water.
Safe extraction of the coal requires advance knowledge of coal gas content, water filled porosity and system permeability because these will be used to guide water and gas pre-drainage strategies.
Qteq is able to quantify all three parameters in situ, using its flagship Borehole Magnetic Resonance (BMR) logging tool.
A proprietary NMR excitation pulse sequence and analysis technique, referred to as T2-StimD, has been developed to detect and quantify adsorbed gas content in the coal matrix, as well as any free gas content in the cleat structure.
The harsh conditions encountered in conventional oil and gas reservoirs impose the need for robust, rugged and reliable monitoring tools to successfully characterise the hydrocarbon resource and optimise development strategies.
Qteq’s range of mature product offerings and services is ideally suited to addressing such challenges.
Our design and supply of permanent downhole pressure-monitoring systems is based on a rigorous assessment of well conditions and client monitoring needs, by our dedicated Applications Engineering team.
Groundwater is a vital resource of social, agricultural, environmental and economic benefit, with known supplies dwindling through continuous population growth and industrial expansion.
Hydrogeology therefore plays a critical role in the development of comprehensive groundwater management strategies to protect this vital resource.
The social licence to operate that is granted by shareholders, communities and governments to energy companies – particularly those developing unconventional resources such as coal seam gas –requires that those operators undertake extensive hydrogeological studies to mitigate the impact of their operations on nearby aquifers.
Qteq provides a range of innovative technical solutions to help hydrogeologists develop an in-depth understanding of the vertical and lateral extent of these aquifers, aquifer flow potential, and to map groundwater movement into and out of these aquifers over time.