8 Points on How to Select Water Well Drilling Rig

For water well drilling rig,the general requirement: simple configuration,less energy consumption,easy operation,more moveable,  Muti-functional, small size. In real application, the drilling rig selection has to be based on the stratum, hole diameter and hole depth as well as drilling method

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1. Price

• Machine price is the key factor for people to select suitable drilling rig, it is one time investment. The machine&#;s price increased along with increasing of hole diameter and depth.
• From Drilling method point of viewDTH drilling rigcoring drilling rig
• From mobility point of view, truck mounted drillscrawler mounted drills

2. Operational Cost

• Operational cost significantly affects the profit people can gain during drilling business. The net profit is the money driller get from well user from water well drilling minus operational cost.
• The operational cost contain people salary,cost of casing, mud and fuel as well as maintenance cost of drilling rig.
• From type of drilling machine point of view, Down The Hole(DTH) drilling rig has higher operational cost than rotary drilling rig working with mud pump. Because, the air compressor is needed for DTH drilling rig and its oil consumption is very much higher. The vertical drilling rig

3. Drilling efficiency

• Drilling efficiency depends on the stratum, skills/experience of operator, the type of drilling machine and drilling method.
• For rock condition,the most efficient way is to use down the hole drilling rig working together with air compressor.
• For soil, clay and sand condition, the best way is to use drilling rig with mud pump.
• For cobble stone, the reverse circulation system is most suitable drilling method. It just need to add a set of reverse circulation drilling tools to existing drilling machine.

4.Drilling Method

• From working principle of drilling machine point of view,there are mainly 3 drilling method:
  • Down The Hole drilling method which needs to work with air compressor. It is great method for rock condition.
  • Rotary drilling with mud pump
  • Auger drilling, it do not need air compressor and mud pump during drilling. But it only can drill the soil, clay and sand.
• From drilling process point of view, we have 2 drilling method:
  • Direct circulation drilling
  • Reverse circulation drilling, it needs dual wall drilling pipe. The drilling fluid go through the space between inner wall of outer tube and outer wall of inner tube. For cobble stone and sand, soil geological structure, it is most efficient drilling method.

5. Service after Market

• The service of after market is another key point for drilling rig selection. During the drilling operation, there will be issues happens on rig like components broken, mis-operation of rig. All this needs timely and professional guide from rig manufacturer. Otherwise it will affect rig user&#;s business

6. Availability of Spare Part

• People needs to consider the availability of spare parts when they buying drilling machine. It is part of operational cost. If the spare parts is not easy to get, it means you have to pay more to get it and cost longer time. All of this will definitely influence drilling business profit.

7. Safety

• The safety is first thing when selecting rig, including safety for operator, service people as well as people around the rig both during drilling and travelling.
• Therefore, the safety guard, emergency stop, dust collector is needed to protect people from death or injured.

8. Environmental Protection

• Nowadays, all countries take environmental protection to a higher level, so the engine emission level and noise level needs to be considered when selection rig.
• Buyer needs to refer to the country or area standard code where the rig will be used

Above is just some basic knowledge during drilling rig selection. It can be guide for business starter when they plan to buy rig.

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Water Well Drilling Machine

For water well drilling rigs, the general requirements are simple configuration, low energy consumption, easy operation, high mobility, multifunctionality, and small size. In practical application, the drilling rig must be selected according to the stratum, drilling diameter, and drilling depth as well as the drilling method.

1. Price

The price of the machine is the key factor for people to choose the right drilling rig, which is a one-time investment. The price of the machine increases with the diameter and depth of the hole.

In terms of drilling methods, submersible drilling rigs are more expensive than coring rigs, and hydraulic drilling rigs are more expensive than vertical shaft drilling rigs, which are more like mechanical drilling rigs.

From the perspective of mobility, truck-mounted rigs cost more than crawler rigs.

2. Operation cost

Operating costs significantly affect the profit one can make in the drilling business. Net profit is the amount of money a driller receives from water well drilling minus operating costs. Operating costs include personnel salaries, casing, mud and fuel costs, and rig maintenance costs.

In terms of rig type, submersible hole (DTH) rigs have higher operating costs than rotary drilling rigs that use mud pumps. Because submersible rigs require air compressors, fuel consumption is much higher. Vertical drilling rigs (mechanically driven) are more economical than hydraulic drilling rigs.

Truck Water Well Drilling Rig         

3. Drilling efficiency

Drilling efficiency depends on the formation, operator's skill/experience, type of drilling rig, and drilling method.

For rocky conditions, the most efficient method is to use a submersible drilling rig working together with an air compressor.

For soil, clay, and sandy conditions, the best method is to use a drilling rig with a mud pump.

For cobbles, a reverse circulation system is the most suitable method of drilling. It is only necessary to add a set of reverse circulation drilling tools to the existing drilling rig.

The company is the world’s best Crawler Mounted Water Well Drilling Rig supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

4. Drilling method

From the working principle of the drilling rig, there are 3 main drilling methods.

The hole-drilling method needs to be used with an air compressor. This is a good method for rock conditions.

Mud pump rotary drilling, is a more economical way of drilling, ideal for soil, sand, and clay formations, for rock, the drilling speed will be lower than submerged drilling.

Auger drilling, drilling without air compressor and mud pump. However, it can only drill soil, clay, and sand.

In terms of the drilling process, we have 2 types of drilling methods.

Direct circulation drilling is where drilling fluid (air or mud) is passed through the drill pipe and rock chips are carried away through the space between the outside of the drill pipe and the hole wall.

Reverse circulation drilling requires a double-walled drill pipe. The drilling fluid passes through the space between the inner wall of the outer pipe and the outer wall of the inner pipe. It is the most effective drilling method for cobble and sand and soil geological structures.

 Drilling Rig

5. After-sales service

After-sales service is another key point of drilling rig selection. During the drilling operation, the rig will have problems such as damaged parts and rig misoperation. All these need timely and professional guidance from the rig manufacturer. Otherwise, it will affect the rig user's business. 

6. Availability of spare parts

People need to consider the availability of spare parts when buying a rig. It is part of the operating cost. If spare parts are not easily available, it means you have to pay more to get it and it takes longer. All this will definitely affect the profitability of the drilling business.

7. Safety

When choosing a rig, safety comes first, including the safety of the operator, service personnel, and those around the rig while drilling and driving. Therefore, safety guards, emergency stop devices, and dust collectors are needed to protect personnel from death or injury.

8. Environmental protection

Today's countries around the world are putting forward higher requirements for environmental protection, so the engine emission level and noise level need to be considered when selecting a drilling rig.

Buyers need to refer to the standard code of the country or region where the rig will be used

These are just some of the basics of rig selection. It can be used as a guide for entrepreneurs when they plan to buy a drilling rig.

Are you interested in learning more about Heavy Weight Drill Pipe? Contact us today to secure an expert consultation!