drill your own water well with mud pump manufacturer

Historically, most drillers dug two pits prior to drilling a well.  A first pit, called a settling pit, received the drilling fluid and cuttings from the drill hole via a short shallow trench.  The cuttings settled down to the bottom of the the settling pit.  A second pit, called a mud pit, was dug nearby and a second trench directed the overflow of the settling pit into the mud pit.  Most of the cuttings settle to the bottom of the settling pit and the drilling fluid in the mud pit has a much higher liquid to cuttings ratio.  In other words, the water in the second pit, the mud pit, is “cleaner.” Drilling fluid from the mud pit is then pumped, by a mud pump, back down the drillpipe.  During the drilling process, cuttings are continuously shoveled from the settling pit so it does not become clogged with cuttings.  Although most of the cuttings settle in the settling pit, it is also necessary to occasionally shovel cuttings from the mud pit as well.

Below is a photograph of mud pits prepared for drilling.  This photograph is from the hydra-jett site.  Hydra-Fab manufacturing http://hydra-jett.com/index.html  sells small and medium sized drilling rigs and is worth looking at if you are considering moving up to a small rig.

As you might imagine, diggining mud pits is a significant undertaking and it makes an even bigger mess of your drilling site.  Modern drillers, being both ingenious and capitalistic souls, have devised a way to avoid this costly, unpleasant step.  They bring portable mud pits to the drill site.  A portable mud pit is simply a container or series of containers that the drilling fluid from the hole is directed to where cuttings settle out prior to the fluid being pumped again down the drillpipe.  Not only does it eliminate the time/money consuming digging but it leaves a cleaner drillsite upon completion of the well.

….but it frequently doesn’t work as well for those of us who have small portable mud pits.  Using real mud pits results in more efficient drilling.  There is no leakage around the guide tube with real mud pits.

Here is an example of a portable mud pit positioned at the back of a commercial drilling rig.  Cuttings from the hole are directed into the settling pit on the right.  Then drilling fluid passes through to the mud pit on the left and it is pumped back down the hole.

There is a wide variety of designs of portable mud pits.  Here are just a few sketches I found to give you an idea of designs that folks have come up with.

So, by now your are probably wondering, where does all that leave us?  We are not going to buy one of those $500 portable mud pits for our $200 project are we?  Absolutely not, in fact you may just be better off digging your pits.   If you are going to dig several wells you might want to consider using a portable mud pit with a mud pump.  I made one out of wood and it works fine.  It is not as efficient as the commercial mud pits but it does the job.  Please take a look at the video below.

As you can see my portable mud pit is just a wooden box with a fitting for the suction line and a minor obstruction to keep the cuttings away from the suction.  You can probably come up with a better design for a portable mud pit that I have.  I probably could but it is already built and I’m not inclined to build another one – but – If I were doing another one, I’d probably build two boxes that fit inside one another for easier travel and storage, and then sat beside each other when drilling.

Greetings Tim & Charlott, below is a GPS link and information on the well we just installed in the honor of Tim & Charlott King! Your love and commitment has allowed our Clean Water 4 Life ministry to sink over 500 water wells for those in need here in the Solomon Islands! Here is a link to read my current newsletter with lots of pictures! http://www.rickrupp.com/newsletter.php

Togokoba SSEC Church & Community is approx 58 kilometers east of Honiara. It was a long bumpy drive to this village. I had to walk a long way to get to the place where they lived. They explained that their source of drinking water was the stream. They were so happy when I explained that our CW4L team was going to come sink a well right in their village. I tasted the well water several weeks later after our team had blessed them with a water well. It tasted so good! It was nice clean & cold water! It never ceases to amaze me that there is such a nice water table here in the rural areas of the Guadnacanal plains! I counted 10 houses in this community and the population is approx 80 people. Now they finally have a source of clean drinking water! These people have suffered for many years either drinking from an open hand dug well or from the stream. Togokoba SSEC Church & Community is very grateful to our CW4L sponsors.

When choosing a size and type of mud pump for your drilling project, there are several factors to consider. These would include not only cost and size of pump that best fits your drilling rig, but also the diameter, depth and hole conditions you are drilling through. I know that this sounds like a lot to consider, but if you are set up the right way before the job starts, you will thank me later.

Recommended practice is to maintain a minimum of 100 to 150 feet per minute of uphole velocity for drill cuttings. Larger diameter wells for irrigation, agriculture or municipalities may violate this rule, because it may not be economically feasible to pump this much mud for the job. Uphole velocity is determined by the flow rate of the mud system, diameter of the borehole and the diameter of the drill pipe. There are many tools, including handbooks, rule of thumb, slide rule calculators and now apps on your handheld device, to calculate velocity. It is always good to remember the time it takes to get the cuttings off the bottom of the well. If you are drilling at 200 feet, then a 100-foot-per-minute velocity means that it would take two minutes to get the cuttings out of the hole. This is always a good reminder of what you are drilling through and how long ago it was that you drilled it. Ground conditions and rock formations are ever changing as you go deeper. Wouldn’t it be nice if they all remained the same?

Centrifugal-style mud pumps are very popular in our industry due to their size and weight, as well as flow rate capacity for an affordable price. There are many models and brands out there, and most of them are very good value. How does a centrifugal mud pump work? The rotation of the impeller accelerates the fluid into the volute or diffuser chamber. The added energy from the acceleration increases the velocity and pressure of the fluid. These pumps are known to be very inefficient. This means that it takes more energy to increase the flow and pressure of the fluid when compared to a piston-style pump. However, you have a significant advantage in flow rates from a centrifugal pump versus a piston pump. If you are drilling deeper wells with heavier cuttings, you will be forced at some point to use a piston-style mud pump. They have much higher efficiencies in transferring the input energy into flow and pressure, therefore resulting in much higher pressure capabilities.

Piston-style mud pumps utilize a piston or plunger that travels back and forth in a chamber known as a cylinder. These pumps are also called “positive displacement” pumps because they literally push the fluid forward. This fluid builds up pressure and forces a spring-loaded valve to open and allow the fluid to escape into the discharge piping of the pump and then down the borehole. Since the expansion process is much smaller (almost insignificant) compared to a centrifugal pump, there is much lower energy loss. Plunger-style pumps can develop upwards of 15,000 psi for well treatments and hydraulic fracturing. Centrifugal pumps, in comparison, usually operate below 300 psi. If you are comparing most drilling pumps, centrifugal pumps operate from 60 to 125 psi and piston pumps operate around 150 to 300 psi. There are many exceptions and special applications for drilling, but these numbers should cover 80 percent of all equipment operating out there.

The restriction of putting a piston-style mud pump onto drilling rigs has always been the physical size and weight to provide adequate flow and pressure to your drilling fluid. Because of this, the industry needed a new solution to this age-old issue.

Enter Cory Miller of Centerline Manufacturing, who I recently recommended for recognition by the National Ground Water Association (NGWA) for significant contributions to the industry.

As the senior design engineer for Ingersoll-Rand’s Deephole Drilling Business Unit, I had the distinct pleasure of working with him and incorporating his Centerline Mud Pump into our drilling rig platforms.

In the late ’90s — and perhaps even earlier —  Ingersoll-Rand had tried several times to develop a hydraulic-driven mud pump that would last an acceptable life- and duty-cycle for a well drilling contractor. With all of our resources and design wisdom, we were unable to solve this problem. Not only did Miller provide a solution, thus saving the size and weight of a typical gear-driven mud pump, he also provided a new offering — a mono-cylinder mud pump. This double-acting piston pump provided as much mud flow and pressure as a standard 5 X 6 duplex pump with incredible size and weight savings.

The true innovation was providing the well driller a solution for their mud pump requirements that was the right size and weight to integrate into both existing and new drilling rigs. Regardless of drill rig manufacturer and hydraulic system design, Centerline has provided a mud pump integration on hundreds of customer’s drilling rigs. Both mono-cylinder and duplex-cylinder pumps can fit nicely on the deck, across the frame or even be configured for under-deck mounting. This would not be possible with conventional mud pump designs.

Centerline stuck with their original design through all of the typical trials and tribulations that come with a new product integration. Over the course of the first several years, Miller found out that even the best of the highest quality hydraulic cylinders, valves and seals were not truly what they were represented to be. He then set off on an endeavor to bring everything in-house and began manufacturing all of his own components, including hydraulic valves. This gave him complete control over the quality of components that go into the finished product.

The second generation design for the Centerline Mud Pump is expected later this year, and I believe it will be a true game changer for this industry. It also will open up the application to many other industries that require a heavier-duty cycle for a piston pump application.

TheZX-1000 is a 16 HP Gravity Type (drilling pressure applied by the weight of the power head) portable drilling rig with many built-in standard features. It comes standard with 125" of 1-1/4" Drill Stem with wide thread machined tool joints, 2 Carbide Drill Bits (your choice of sizes), Adjustable Slip Assembly, High Capacity Water Swivel(The Key Feature, Our Own Proven Design), 12 Volt Electric Winch with Remote Control, 2X2 Mud / Trash Pump. It includes a choice of engine configurations, Import or Kohler Electric Start, and more. Please call for detailed spec sheet.

The PTO Rig is among our strongest drilling rigs, it is Fully Hydraulic, Chain Drive, 3 Point Hitch, it includes 200" of 1-1/4" Drill Stem with wide thread machined tool joints, 2 Carbide Drill Bits (your choice of sizes), Adjustable Slip Assembly (Our Own Proven Design), PTO Pump, Mud Pump, Built-In Hydraulic Resevoir, High Capacity Water Swivel(Our Own Proven Design). Please call for detailed Spec Sheet.

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Explore the various water well drills with mud pump products available for wholesale at Alibaba.com. Get a water well drills with mud pump for drilling water wells, water exploration holes, geological exploration, coal mines, and other kinds of mining. Some water well drills with mud pump options use caterpillar tread to move. Others use rubber tires, while others require a separate means of transport. Caterpillar tread propulsion can climb up to 25 degrees inclination. Some products in the range are capable of drilling over 200 meters, while others are only used for open-pit mining with depths of around 3 meters. Drilling can be done vertically downwards, horizontally, or in a slanting direction. Drilling speed depends on the power of the machine and the general hardness of the surface. The hole diameter can vary from 90mm to 200mm.

water well drills with mud pump options also include an air compressor, a mud pump, drilling rods of various sizes, connectors, and a drilling tower. Drilling is done using drill bits of various shapes, sizes, and compositions. You can choose between diamond bits, alloy ring-shaped bits, 3-wing alloy bits, PDC bits, and hammer bits. Each drill bit uses different drilling methods, including rotary, percussion, blast hole, and core drilling.

Smaller products have a lifting power of around 25 kilonewtons and weigh about 2,500kgs. They’re ideal for small-scale drillings such as farms and homes. Larger ones are faster with more power, making them ideal for commercial use. Browse through Alibaba.com and find a water well drills with mud pump that’s ideal for your work scope. Buy mine drilling rigs for your wholesale business at competitive prices. Chinese wholesalers provide you with customization options and great after-sales services.

With drill rig service centers in Kansas, Florida and Pennsylvania, you’ll have industry-leading drill rig service team support nearby for your routine maintenance or more in-depth rig remounting and refurbishment.

Whether drilling a 25-foot screen well or a 400-foot artesian rock well, customers appreciate the added benefit DRILLMAX® water well drilling rigs bring to their fleet. The compact size of the water well drilling rigs makes mobilization to the water well drilling job and into tight drilling locations easier – and less costly. The combination of torque, mast speed, pumps and rod loader make water well drilling fast and easy. Customers brag their DRILLMAX® water well drilling rigs are a big rig in a little package.

“Our industry has a hang up on bigger is better,” said Ricky Cosnahan, owner, DJ Pump Service, Georgia. “If a 24-inch wrench will break pipe loose, then you get the 36-inch to make sure you have the power. Just because it’s little doesn’t mean it doesn’t have power.”

Driller Chris Adkison attributes their success to the top head speed of the DM250 for cleaner, straighter well development in significantly less time - cutting the hole in hours instead of days.

“Where we drill wells there’s a lot of limestone and blue marl. It would take four days to drill 260 feet and then make a well on the fifth day,” Adkison said. “Now we’re doing it in a day and a half. The blue marl is a dense clay that swells and the DM250 cuts it really well.”

Versatility combined with creature comforts like deck-mounted Mudslayer® make the DM450 the driller"s choice on a wide-range of water well drilling jobs.

"It"s fast and efficient. We get paid by the foot, so we need to make a hole fast as you can, and the DRILLMAX® DM450 does that," Mark Rhoads, Rhoads Farms, Texas, said.

"I"m able to complete jobs faster and do more work per week, which means more money and keeping customers happy. It also means more time with my kids and not working weekends trying to prepare for the next week," Mark said.

Our team of engineers thrives on collaborating with drillers while they continually innovate new designs on our water well drill rigs for sale. Our goal is to help maximize your success by making your job faster, safer, and easier. Partner with us and we"ll work to decrease your water well drilling rigs" downtime while increasing your family time.

“The rig doesn’t use much fuel and per foot it’s cheaper to operate. Upfront cost is less, and maintenance is less because parts are cheaper and it’s easier to work on. Maintenance wise, it’s really simple. Essentially it’s maintenance free. I can use hand tools to fix what I have to fix. If a hydraulic hose breaks, you can use common stuff you find at an auto parts store.” - Steve Simmons, owner, Roy Simmons & Son Well Drilling, Michigan

If you"ve chosen to move out to an undisturbed, rural location, or you"re concerned about the quality of your local municipal water and want a healthier alternative, you may be interested in digging a water well. How do you know where to get started or know what you need to do. To help you on this DIY journey, our well pump repair company in Raleigh is walking you through how to dig a well.

Every state has different guidelines and rules related to digging your own well. In North Carolina, Article 7, Chapter 87 of the General Statute outlines the Well Construction Act, and the guidelines of this law include:

Prior permission must be obtained from your local public health department, or, if it"s a 100,000 gallon a day well or are to be dug in a protected geographical area, the Environmental Management Commission needs to issue the permit.

Each county health department implements a water well permitting, inspection, and testing program, so your first step toward digging a well is reaching out to them to start the permit process.

Many people who are researching how to dig a well don"t realize how deep groundwater generally is below the surface of the earth as well as how difficult it can be to get to it. In North Carolina, most wells extend well beyond 100 feet deep and, because groundwater is filtered through silt, stone, and layers of minerals, you have to dig through all of that in order to access the groundwater in the first place. To know what you"re getting in to, it"s important to know what"s lying below the surface.

While you"re getting information about digging conditions, this is also a good time to know exactly where your septic or sewer lines are located. Contaminated groundwater can make you and your family dangerously sick, so it"s important to know exactly where the lines are located so you can dig your well at least 50 feet away from them. If you don"t feel confident where you are digging, it"s important to reach out to well drilling specialist, to ensure you don"t damage underground pipes.

This is a physically demanding, near impossible task that may be actually impossible if the soil is clay-heavy or has shallow bedrock. It involves literally pounding a length of pipe with a post digger down through the earth until it reaches the groundwater, which could be as much as 300 feet deep.

Using a pneumatic drill and an air compressor, you can literally drill through the dirt, rock, and other barriers and run as much as two or three hundred feet of PVC water pipe into the earth. This is still a long setup, sometimes taking days or even a few weeks to complete.

Because our groundwater is deep and driving a well is so challenging, we"re outlining what you"ll need to have on hand and what you"ll need to do to drill your own water well.

You may also need duct tape, measuring tape, and markers, plus equipment to keep your compressor and drill operating. Instead of buying the materials individually, you may want to purchase a DIY Well Kit which contains much of what you need except the PVC.

Using an auger or post-hole digger, dig down about five feet and cut the 8" PVC pipe to fit the hole with four inches sticking up from the ground. Next drill a 2" hole into the side of the exposed pipe and insert the 2" PVC.

Dig a shallow settling pond 10 feet away from the well that"s at least four feet wide and run an eight inch ditch connecting the pond to your well and run the 2" PVC pipe into the ditch and cover with dirt. This pipe"s job is to transfer clean water from the pipe into the drill hole.

Place the drum at the edge of the settling pond and face it toward the well. As the drum catches water from the well, it will empty into the pond and flow back in.

Attach PVC pipe to the drill and secure it to prevent leaks. and run the other end of the pipe into the 55 gallon drum. This creates a space where mud and water can empty out.

Fill your well hole with water and turn on the drill before placing it into the hole. Move the drill up, down, and horizontally to help break up the soil.

When you need to add more pipe, remove the running drill from out of the water, then turn the pressure off. Add more pipe, and continue to drill downward.

Once you get the appropriate depth, case off the well by lowering in SDR 35 pipe until it"s the full depth of the well plus 3 feet above ground. You"ll keep it in place with concrete and pea gravel to prevent runoff from contaminating your well water.

Drilling your own well can be done, but it"s a lengthy, exhaustive process that involves having to buy a large quantity of materials, and give up days or weeks of your time. Instead of doing this yourself, reach out to us for professional well drillingand well pump installation in Raleigh. With decades of experience and state-of-the-art equipment, we can tackle any well quickly and efficiently so you can enjoy clean, fresh water into your home effortlessly!

A: Well drilling completion times vary from a half day to three days or longer.  Drilling time is affected by many factors including time to set up, difficult drilling formations and weather.  All of these factors vary from site to site and well to well.  These are also factors that we have no control over.  In addition, the time it takes to develop each well is different.  Because of these variables there is no way for us to give a fixed time for well completion.

Q: Yes. Artesian and Floridan Aquifer wells are permitted in your area. They can be drilled for several different purposes(home use, geothermal, irrigation, etc.). PWD drills many Floridan Aquifer wells and keeps a record of each one. Call our office for more information on Floridan Aquifer wells in your area.

A: Florida is fortunate to have one of the most porductive aquifers in the world, the Floridan Aquifer. When drilling a Floridan Aquifer well, PWD can guarantee the quantity of water the well will produce.

Unlike Floridan Aquifer wells, shallower wells access aquifers that have unpredictable characteristics. PWD will guarantee a minimum of 10 gallons per minute from wells other than Floridan Aquifer wells.

A: PWD has over 100 years of records of wells drilled in Northeast Florida. With your property address, we consult our records to see what wells are availble in your area.Floridan Aquifer wells are availble in all areas of Notheast Florida.

A:  “Salt & Pepper” wells, or  Intermediate wells are normally 3″ or 4″ in diameter and are drilled to depths of 220-320 feet. At this depth water is withdrawn from a aquifer that consist of clays and sands that resemble salt & pepper.

A: Part of the drilling process includes removing cuttings from the borehole we drill during well construction. To contain & dispose of the cuttings we usually dig two pits beside the drilling rig. These pits vary in size based on well size & depth. Generally they are +/- 3ft wide x 6ft long x 4ft deep. Drilling fluid is circulated through the pits where the cuttings settle out and the drilling fluid is reused. We will cover the pits when the well is complete.. For a period of time the covered pits will be soft.

If you do not want pits dug in your yard there is a solution. We can use portable above grade pits instead of digging the pits. When we use the above ground pits we also bring a vacuum tank to remove all of the drill cuttings and fluid from your yard. This does require an additional crew member, an additional truck, the vacuum tank to dispose of fluid and drill cuttings off site, therefore there is a charge for this service. We will be glad to price this service for you upon request.

A: Wells that “go dry” are generally shallow/surficial wells that are less than 50′. These wells depend on rainfall to replenish the water table. Partridge Well drills wells that are usually deeper and penetrate a confined aquifer. This means that our wells are not directly dependent on rainfall. The water level may rise and fall in these wells, but they do not go dry.

In cases where the power is lost or is not available and a pump is required to pull the water out of the well, PWD can install a pitcher pump or hand pump(pictured to the right) to access the water without power.

A: It is your choice.  We have to mix a drilling mud for the drilling process and dispose of it when we are finished  The mud(shown in this picture to the right) is composed of water, sand, and clay. Typically we pump this mud onto the property where the well is drilled. However, we do offer an upgrade where we can use a special truck to contain the drill mud and remove it from your property.

When you"re seeking the field flexibility to complete your drilling faster, easier and safer, count on Geoprobe® drill rigs engineered for versatility and manufactured for reliability. Industry leaders depend on our ongoing commitment to innovation and industry-leading customer support to advance their business ahead of the competition. Digital readouts providing instant feedback, enhanced safety features, easy operation, and availability of training options mean veteran drillers find their jobs simplified while new drillers build confidence, making them productive as they"re quickly coming up the learning curve.

Whether you’re facing consolidated materials, glacial till, or backfill rubble, quickly complete complex holes to greater depths with the powerful GV5 50K sonic head on our line of sonic drill rigs. Engineered by Geoprobe® to advance up-to 12-inch tooling, the GV5 produces torque required to maintain rotation in tight formations – all backed by a 2-year warranty.

Increase depth advancement and recovery speeds while minimizing waste with the 8150LS sonic drilling rig engineered for driller safety, sampling speed, and operation efficiency.

Geoprobe® combination drill rigs possess the power to tackle difficult site conditions combined with the versatility to exceed subsurface sampling expectations to equal business growth in both direct push and rotary drill rig applications.

Combine geotechnical augering and high-speed rotary with advanced direct push capability to offer additional services to your customers, quickly going from coring rock to pushing CPT - all in one drill rig.

From crowded street corners to far removed places, tackle various environmental, geotechnical and exploration applications with a single machine combining rotary drilling and direct push, saving time and money required to mobilize multiple drill rigs.

In a geotech industry ruled by rate-per-foot, Geoprobe® geotechnical drill rigs capable of swiftly sliding from rotary to automatic drop hammer, even to CPT or direct push — without having to move drill mast or machine — position you for increased production and profit.

Save time and effort swiftly sliding the innovative centerline head side shift into position for rotary, automatic drop hammer, event CPT or direct push. No need to move the geotechnical drill or drill mast on the compact, off road drill rig.

Punch out power and pipe line projects with efficiency and performance of 31 series drill mast aligning all head and winch functions over the bore hole combined with creature comforts of a crawler carrier.

Efficiently complete geotech investigations sliding between drilling functions all without the need for a class A/B CDL, safely bringing new drillers up the learning curve on the drilling truck.

Maximize the value of your investment by choosing a CPT drilling platform best suited to your specific business model. Whether you’re seeking a dedicated CPT drilling rig or a versatile drilling rig to run a variety of applications, you’ll find the combination of features to push your business ahead.

Rely on static weight from the comfort of a CPT machine with a climate-controlled cabin when using the 2060CPT crawler to conduct CPT or Direct Image® logging.

Generating a name for itself and redefining the way sites are investigated in the environmental industry, Geoprobe® continues to advance direct push drilling through continued innovation of its line of high-quality, hydraulically-powered direct push drilling rigs

Featuring a proven GH63 percussion hammer and able to use 5-foot tooling, the 6011DT direct push drill rig is still being sized to slip into small spaces.

With the necessary tophead rotation speed, head feed speed, and plenty of mud pump options to get the job done, complete your water well drilling, geothermal drilling, and cathodic protection drilling jobs with a single, compact water well drill.

Tophead offering both torque and speed to the impressive power to weight ratio make the DM450 well suited for water well, geothermal, and/or cathodic protection drilling while minimizing maintenance.

Outfit as down the hole drill or mud drill with the power of 28.5-foot stroke, 40,000 lb pullback, and 8,000 ft-lb torque to handle deeper wells along with weight of steel casing.

The objective in choosing a method to drill a water well is to use the least expensive method that can be successful given the type of material that must be drilled through and the depth that must be drilled to reach an acceptable source of groundwater.

Often, there are no options, and the choices we have are limited, maybe even non-existent. But the method used to drill a water well must match the geology.

Most manual well drilling methods have been adapted to use machine power instead of human power. Also, powered methods have been developed that can drill larger diameter boreholes much deeper and faster than any manual method. Machines used to drill a water well are typically called a "drill rig" or just a "rig".

This method employs a pump to force a flow of water down a drill pipe and out a narrow nozzle to make a ""jet"" of water that loosens the sediment. The return flow of water outside the drill pipe carries cuttings up to the surface and into a settling pit. The pump then returns the water back down the pipe. The drill pipe is suspended from a tripod and rotated by hand to keep the borehole straight.

This method only requires lengths of pipe and a water pump that can generate sufficient pressure. The pipe is often left in the ground to serve as the well casing.

The diameter of the borehole is only slightly larger than the drill pipe/casing. Therefore, it is difficult to install an adequate sanitary seal to protect the well from surface water contamination.

This is a mechanized version of manual percussion drilling. The heavy drill bit and related parts are called the ""tools"" and they are raised and dropped on a steel cable.

Cuttings are removed with a bailer. Several meters of water must be maintained in the borehole to keep the cuttings suspended. The machinery ranges from a very simple skid-mounted powered winch with a tripod to a complex set of pulleys and drums with a large mast.

A cable tool rig can drill through anything. The larger versions can drill a water well hundreds of meters deep. Compared with other powered drill rigs, the machinery is simple and has a relatively low rate of fuel consumption

Compared to other drill rigs of a similar size, a cable tool rig will drill a water wellvery slowly. When drilling in loose sediments, it is necessary to drive steel pipe behind the drill bit to keep the borehole from collapsing.

This method used to drill a water well starts with the basic concept of well jetting described above. Add a larger cutting bit, lengths of steel drill pipe with threaded joints, a motor to turn and lift the drill pipe, and a sturdy mast to support the pipe and you have the elements of a mud rotary drill rig. A further refinement is mixing bentonite clay or other materials in the water to improve its ability to lift cuttings out of the hole; this fluid is called ""drilling mud"" or just ""mud.""

There are many kinds of mud rotary drill rigs used to drill a water well. They fall in two basic categories; table drive, where the drill pipe is turned by a rotating mechanism near the base of the rig, and top-head drive, where the drill pipe is turned by a motor attached to the upper end of the pipe.

In both types, the upper end of the drill pipe is attached to a lifting mechanism that raises and lowers it along the mast. Both types of mud rotary rigs also have a swivel attached to the upper end of the drill pipe that allows drilling mud to be pumped down the drill pipe while the pipe is rotating.

The larger the rig, the faster and deeper it can drill. The LS100 and LS200 drill rigs are mud rotary rigs at the small end of the range of drill rig sizes.

Mud rotary drilling is also much faster than cable tool. A large mud rotary rig can drill a borehole 60 cm in diameter to 1,000 meters or more. Even a small rig like the LS200 can drill a 20 cm porthole to a depth of 60 meters.

As a result, mud rotary rigs use more fuel per hour than a comparable cable tool rig. Most drilling operations that use a large mud rotary rig also require support vehicles to haul water and drill pipe.

The mechanical elements of an air rotary drill rig are similar to a mud rotary rig; table drive and top-head drive are the two basic options for rotating the drill pipe. The principal difference is an air rotary rig uses compressed air to remove cuttings rather than drilling mud.

A type of ""foam"" can be added to the air stream to improve cuttings removal and provide some borehole stability. An air rotary rig can use the same type of drill bits as a mud rig, but it can also drill with a down-the-hole hammer.

This type of bit uses compressed air to break up rock and it can drill very fast. A large air rotary rig can drill a borehole 60 cm in diameter to 500 meters or more.

Because there is no drilling mud to mix or settling pits to dig, an air rotary rig can be set up very quickly. An air rotary rig also drills much faster than any other rig of a comparable size.

An air rotary drill rig requires a very large air compressor, especially if a down-hole hammer is used. This adds significantly to the cost of the rig, its maintenance needs, and its fuel use.

A large air rotary rig will consume 40-60 liters per hour of fuel, making it one of the most expensive types of drill rig to operate. Large air rotary rigs also require support vehicles.

Swiss Centre for Development Cooperation in Technology and Management (SKAT) has published a manual entitled "Drilled Wells" which covers additional topics and information on the subject of how to drill a well. The PDF of that manual can be downloaded here.