Frequently asked questions from both novices and professionals ranging from “What is a drill rig?” to “How should I transport my drills?”. These answers are based on the Australian drilling industry and are a guide only. More technical questions of process and policies outside of Australia are better directed to an expert in your location.

Drilling Equipment FAQ

Whether you are experienced or just curious, Paul is happy to answer any questions related to drilling, 0413 907 649.


The term diamond core drilling comes from the ‘diamond bit’ drill used during this process. This drill bit is made up of a group of small, industrial-grade diamonds set into a metallic, soft matrix. As the ground is drilled this matrix will wear away and expose more diamonds.

The diamond bit is then attached to a drill rod which measures to about 10 feet in length. More sections of the pipe can be attached to the top of the drill rod, allowing greater depths to be drilled as needed. Therefore, the number of rods attached to the top of the drill rod will determine the depth that can be drilled. Within the drill rod, a core tube is attached to a cable by a latching mechanism. The core tube is lifted to the surface using the cable to allow for the removal of the solid core.

There are two primary types of diamond drilling, which include rotary drilling and wireline drilling. Rotary drilling is used primarily for borehole drilling, whereas wireline drilling is used for solid core sampling.

Face drill rigs (Jumbos) are built for blast hole drilling in underground mining and tunnelling. These jumbo drill rigs can be equipped with up to four booms, covering cross sections from 6 m2 to 206 m2.

You can an in depth understanding of these rigs by visiting Epiroc.

An exploration drill rig and a geotechnical drill rig serve different purposes in the field of drilling. Here are the key differences between the two:

  • Purpose:

   – Exploration Drill Rig: Exploration drilling focuses on discovering and assessing the presence and quality of mineral resources, such as oil, gas, or minerals. Exploration drill rigs are used to collect samples from the subsurface to determine the potential for resource extraction.

   – Geotechnical Drill Rig: Geotechnical drilling is primarily conducted to gather information about the physical properties and composition of the ground for engineering and construction projects. Geotechnical drill rigs are used to obtain soil and rock samples, assess the stability of the ground, and gather data for foundation design and construction.

  • Depth and Reach:

   – Exploration Drill Rig: Exploration drill rigs are designed to reach greater depths to explore potential deposits that may be located deep underground. They are equipped with specialized drilling tools and techniques to penetrate various rock formations.

   – Geotechnical Drill Rig: Geotechnical drill rigs typically operate at shallower depths, focusing on the upper layers of the ground. They are designed to collect samples and gather data related to soil properties, groundwater levels, and geological conditions for construction and infrastructure projects.

  • Sampling Methods:

   – Exploration Drill Rig: Exploration drill rigs use core drilling methods, such as diamond drilling or reverse circulation drilling, to extract intact cylindrical rock samples (cores) from the subsurface. These samples provide valuable information about the mineral composition, structure, and potential resource deposits.

   – Geotechnical Drill Rig: Geotechnical drill rigs use various sampling techniques, including auger drilling, sonic drilling, or cone penetration testing (CPT), depending on the project requirements. These methods help assess soil properties, strength, permeability, and other geotechnical parameters relevant to construction and engineering projects.

  • Equipment and Technology:

   – Exploration Drill Rig: Exploration drill rigs are often larger and more powerful, equipped with advanced technologies and instruments to handle the challenges of deep drilling. They may have features like wireline systems for efficient core retrieval and on-site analysis tools for real-time data evaluation.

   – Geotechnical Drill Rig: Geotechnical drill rigs are typically smaller and more mobile, designed for ease of transportation and maneuverability across various terrains. They may have specialized attachments for specific sampling methods and instrumentation to measure parameters like soil density, moisture content, and groundwater levels.

While there may be some overlap in certain functionalities, the primary distinction between exploration drill rigs and geotechnical drill rigs lies in their purpose, depth capabilities, sampling methods, and the specific requirements of the industries they serve.

Sonic Drilling provides superior versatility for many applications. It can be used for angle or multi-cased wells without leaving the casing in the ground.

A blasthole drill, also known as a blasthole rig or blasthole drill rig, is a specialized type of drilling equipment used in mining and construction operations. Its primary purpose is to drill holes into the earth’s surface for the placement of explosives. These explosives are then detonated to break apart rock formations, allowing for the extraction of minerals in mining operations or for various earthmoving purposes in construction projects.

Blasthole drills are typically large and powerful machines that are capable of drilling deep holes with diameters varying dependent on the rig make and model. They are equipped with drill bits specifically designed to withstand the rigors of drilling through hard rock and other challenging materials.

Blasthole drills may be operated manually or controlled remotely, depending on the specific rig and the safety requirements of the site. They are essential in the process of creating blastholes for blasting operations, which play a vital role in mining, quarrying, and large-scale construction projects.

Starting out in Australia, there are several sources where you can seek advice on the type of drill rig to use. Here are a few options:

  1. Rig Sales Australia: Reach out to Paul Coombs who can guide you through the selection process and recommend the best drill rig based on your specific needs and budget.
  1. Industry Associations: Contact industry associations such as the Australian Drilling Industry Association (ADIA) or the Australian Drilling Contractors Association (ADCA). They can provide you with valuable information, resources, and connect you with experts in the field who can offer guidance.
  1. Online Forums and Communities: Join online drilling forums or communities where you can interact with experienced drillers and seek their advice. Platforms like or Australian Mining Forum can be helpful in connecting with industry professionals who can share their knowledge and recommendations.
  1. Local Drilling Contractors: Consult with local drilling contractors in your area. They have firsthand experience with different types of drill rigs and can provide insights based on their practical knowledge and expertise.

Remember, it’s important to clearly communicate your requirements, budget, and intended drilling applications to receive the most relevant advice.

Factors such as required production, terrain, material characteristics, and proximity to vibration-sensitive areas should be considered.


Rig Sales Australia is not affiliated in any way with any business or service listed below and these resources are a guide only.

Buying Through Rig Sales

Choosing Rig Sales Australia offers benefits like extensive experience, industry knowledge, and dedication to excellence. Paul Coombs specialises in various areas of drilling, ensuring professionalism, attention to detail, and commitment to achieving the best possible outcome for Buyer and Seller.

Call or email Paul and he will organise a suitable time for both Buyer and Seller and put you in touch with the Seller directly for a seamless experience.

Alternatively Paul can provide you with advice to have independent inspections completed by companies like Sandvik, Atlas Copco, etc…

No we don’t engage in the rental of the equipment we list. Rig Sales is a  broker of drilling rigs and have been engaged to sell the machinery listed on behalf of a private Seller. 

Rig Sales Australia avoids Conjunction Sales due to potential risks such as:

  1. Conflict of Interest: The broker’s duty to act in the clients’ best interest may be compromised.
  2. Lack of Control: The broker may lose control over the sales process, leading to potential delays or miscommunications.
  3. Potential Legal Issues: Disputes during the sales process could lead to legal battles and strain the relationship with clients.

Read our policy here

Yes, we have drilling rigs listed that are equipped with advanced automation technology, including remote control operation and data monitoring capabilities.

At Rig Sales Australia, we offer a range of drilling rigs, including RC rigs, blasthole rigs, and sonic rigs. The drills we sell are mostly for extracting minerals and fossil fuel, water boring and soil profiling. There are both surface and underground drills in our catalogue along with anfo trucks and equipment related to these fields of expertise.

To select the right drilling rig, consider factors such as the type of soil or rock formation you’ll be drilling, the depth of the hole required, and any specific project constraints. Paul can guide you in making the best choice.

90% of drills are located in various states across Australia and are under the care and maintenance of the Seller’s compound.

A small selection of overseas used equipment are available also for our international clients.

We understand that each project is unique. Paul and Bohrmeister can work with you to customize a  drilling rig to suit your specific requirements.

Rig Sales Australia is the Australian distributor of the Bohrmeister range of equipment. Bohrmeister will talk directly with you to custom build a drill or crawler to suit your project.

All equipment is pick up only from the compound of the Seller. The organisation and payment of freight services is the responsibility of the Buyer.

The Seller or employees will be available to oversee or assist loading the equipment if you coordinate directly with the Seller or call Paul to ensure access on a given day.

Selling With Rig Sales

To sell your equipment, you can start by filling out the online form HERE or contact Paul at 0413 907 649 for assistance.

The commission for selling equipment is 5% of the sell value for transactions over fifty thousand dollars ($50,000+) and 10% of the sell value for transactions under fifty thousand dollars (< $50,000). This commission structure ensures that Rig Sales Australia receives a percentage of the final sale value as compensation for their services that covers advanced marketing and digital infrastructure.

No, you can sell a single piece of drilling related equipment or have multiple listings. We cater to both individual sellers and companies with multiple items.

Our transparent process begins with completing the necessary form or contacting Paul directly. We handle everything from advertising to negotiations and finalizing the sale.

With 40 years of experience and a no-nonsense approach, we have built a reputation based on integrity. We weed out time wasters and provide a smooth selling process.

Rig Sales Australia prioritizes protecting both parties. We use rock-solid contracts that are regularly reviewed by our legal representative, ensuring a secure transaction.

Yes, we value your privacy. All information you enter is stored on a secured server outside of the Rig Sales Australia website to ensure no breach can access any of your information. See more here.

Rig Sales Australia follows a strict privacy policy and treats all information provided by sellers with the utmost confidentiality. Read our Privacy Policy.

Our terms of service outline the responsibilities of both sellers and buyers. These terms are outlined in our contracts. A Seller’s responsibilities at time of listing are shown in full on the listing document. 

Before a sale progresses, all parties including the Broker will be requested to sign the Sales Contract that explains in clear and unambiguous terms that protect all parties.


Well established network - 40 YEARS

No BS approach
Driller for nearly 20 years
Reputation built on integrity
Transparent process from start to finish


We weed out the time wasters
Protection for both seller and buyer
Rock solid contracts reviewed by our legal representative

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