disassemble mud pump prosess price
The 2,200-hp mud pump for offshore applications is a single-acting reciprocating triplex mud pump designed for high fluid flow rates, even at low operating speeds, and with a long stroke design. These features reduce the number of load reversals in critical components and increase the life of fluid end parts.
The pump’s critical components are strategically placed to make maintenance and inspection far easier and safer. The two-piece, quick-release piston rod lets you remove the piston without disturbing the liner, minimizing downtime when you’re replacing fluid parts.
When it comes to the process of Mud pump repair, our expertise is second to none. Unlike smaller machine shops, We are pump repair specialists with expertise in repairing and rebuilding Mud pumps. We offer several level of rebuild options in order to make your Mud pump repair is as efficient and as economical as possible. We can manufacture many of the required components in-house for a Mud pump repair and or Mud pump rebuild as well.
You can trust the knowledge and expertise of your Mud pump repair in our hands. We have decades of qualified experience in the troubleshooting of your Mud pump repair, view our
We know the ins and outs of what made the Mud gearbox to fail, from the erosion that happens, to wear and tear of seals, it’s a common thing. That’s why trusting your Mud pump repair in our shop can only bring life to your Mud.
It’s not uncommon for other machine shops just trying to figure it out. Not here. We don’t have to figure out what happened to your Mud pump, again we have years and years of experience with Mud pumps and the Mud pump repair process. Although sometimes the Mud pump rebuild is a little bit different, we can ensure you that your Mud pump will be restored. It’s not uncommon for the Mud pump repair to suddenly turn into a process of rebuilding the Mud pump due to a further analysis of the breakdown in our shop.
We don’t take a first option of a rebuild due to it’s expense, because sometimes that can become a re-manufacturing process especially if the pump is very aged, but in the end, if a rebuild is needed for any type of re-manufacturing needs, you can count on MER to get the job done, that’s why we have a full facility dedicated to re-manufacturing these types of equipment to ensure the proper repair of your Mud pump. Nevertheless, we will let you know in what category it falls in before we even start the process of the Mud pump repair or the Mud pump rebuild.
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You’re researching foundation repair options and have come across the term “mud-pumping” and you want to know what it means. Or maybe you are thinking about when a foundation is lifted, what happens with the space underneath your home? There’s a void there now and does it get filled in or what?
Mud-pumping is a finishing step of foundation repair, but not every foundation repair contractor adds this final step. It’s not automatically done so you might be wondering why some companies would use this technique or what its advantages and disadvantages are.
At Anchor Foundation Repair, we have been repairing foundations since 1985 and began adding mud-pumping to all slab-on-grade foundation repairs in 1998. We decided to take every reasonable step to provide the most security and stability in foundation repairs to Brazos Valley homeowners and bought our first hydraulic mud pump at that time.
We know mud-pumping has great value and importance in a foundation repair project, it’s a standard part of our slab foundation repairs. But we can tell you about it in an objective way so that you can decide if it’s as important to you as it is to us.
Now, you could just scream into the void underneath your home. But more productively, you can consider filling it with mud-pumping material so that there is not a bunch of empty space between the bottom of your home and the earth. Mud-pumping helps lessen the opportunity for more foundation settlement or problems to arise.
Mud-pumping is not typically needed for pier and beam foundations, but for slab-on-grade foundation repair, it is an option. While mud-pumping is not *required* in foundation repair, it has many benefits for the homeowner.
So no, mud-pumping is not necessary to complete a foundation repair project, and manyfoundation repair companiesdon’t do it. Even though foundation repair contractors often skip this final step, you may want to seriously consider it. All the “whys” are in the next section.
Nature doesn’t like empty things, nature wants to fill them up. This is that “nature abhors a vacuum” thing. If the void under your home doesn’t get filled with mud-pumping material. It will very likely get filled with something else, like:
PRO #1: So one of the pros of filling voids with mud-pumping is that it takes up that empty space and prevents those areas from getting filled with something less desirable. The slurry material flows and fills every little space, permeating even the smallest pockets of air. But there are a couple more compelling reasons for you too . . .
PRO #2: Empty space creates weaker points and added stress to the foundation where it is not directly supported. Mud-pumping provides extra stability and holding power to your foundation without empty spaces under it. Having something solid underneath your whole slab is more supportive than drilled piers or pressed piles alone.
PRO #3: Mud-pumping the voids under your foundation also minimizes the risk of further movement and settling. When things are all snug and surrounded by other material, it’s less likely for them to wiggle and move around. It’s kinda like tucking your kid in at night. You burrito that little one in good with the hopes that they will stop moving and fall asleep, right?
Side Effect Bonus PRO #4: The step before mud-pumping is testing your under-slab plumbing to make sure there are no leaks. If leaks are found, they need to be fixed first. So if mud-pumping is used on your foundation repair, you will have the added comfort of knowing that there are no leaks or that they have been repaired. This is another way to make sure that further problems don’t come up later for your foundation or underneath it.
Like anything else, there are a few cons to mud-pumping as part of your foundation repair. Even though we are a fan of mud-pumping, it does have some risks and downsides that we want you to be aware of.
CON #1: Mud-pumping costs more. This is an additional step that takes added time and more materials, SO there will be extra cost to you. Mud-pumping adds between $2,000 and $4,000 to the price of your average-sized foundation repair.
CON #2 (minor): There is a small risk of over-pumping the mud and adding too much material under the home. This can cause a hump in your floor. But with an experienced team working on your foundation repair project, this has a low chance of happening. Just want you to know this is a potential problem that could happen with an inexperienced or less careful contractor.
CON #3: Just like that kid that you tucked into bed with a burrito blanket, there’s no guarantee that no more movement will take place. Mud-pumping is a safeguard, an insurance policy, a risk minimizer, but it’s not an absolute settlement solution with no potential for failure.
Like many forms of insurance or safeguards, you don’t really know if you’re going to need it or not. You might only know the value of mud-pumping afterward in hindsight since we can’t predict what will happen later with your home.
As mentioned, mud-pumping is a final step in a foundation repair project, but it has a few steps of its own to complete the process. Here’s a breakdown of how it works:Raise the foundation and secure it in place with shims
The mud-pumping process takes about half a day or small projects and several delays for larger jobs at the end of a foundation repair project. So it doesn’t add a lot of time to the job but it can add some peace of mind.
What’s the worst-case scenario if you don’t do mud-pumping? Well, you could spend thousands of dollars on a foundation repair only to have it settle all over again due to missing that final step and leaving voids under your foundation.
On the flip side, your home can still settle no matter what you do (or it might not, there’s no way to know for sure) but the risk is minimized as much as humanly possible if you add mud-pumping to the repair. This seems like a tricky decision, so let’s try and make it a little easier with some “if-then” statements.If you love your home and plan to be in it for the long haul and want the very best, get the mud-pumping.
If you are selling your home and won’t be living in it any longer, then you’re not worried about the longevity of the repair and could skip the mud-pumping.
Here’s one more “if-then” statement for you: if you want to use Anchor Foundation Repair for your slab-on-grade foundation repair project, then mud-pumping is part of the deal. We don’t leave repair projects without the last step because we also have a lifetime warranty and service agreement.
At Anchor Foundation Repair, we have seen firsthand the consequences of not filling voids after repairs in our 35 years in business. We have inspected and repaired dozens of homes that had previous foundation repairs (by other companies) without mud-pumping. We have felt the hollow-sounding floors and seen homeowners having to go through the repair process again to get it right the second time.
Manufactured to withstand the toughest drilling and environmental conditions, our K-Series triplex mud pumps are ideal for all drilling applications. This legacy product features a balanced forged-steel crankshaft and Southwest Oilfield Products ‘L” Shaped modules which is essential to minimize wear, noise, and operating vibrations. These attributes are essential when drilling deeper high pressure formations, long laterals and when handling corrosive or abrasive fluids and slurries.
Every American Block triplex mud pump is manufactured and fully load tested before leaving our manufacturing campus, and is available in sizes ranging from 800 HP to 2200 HP. The American Block K1600 HP Mud Pump is also available in a 2000 HP up-grade version, when more HP is needed in the same 1600 HP footprint.
Serving a multitude of industrial engineering sectors, as well as the global horticulture, shipbuilding, water treatment and automotive markets, Johnson Pump has always put customer needs first. Supplying an expansive portfolio of pumps (based on positive displacement and centrifugal mechanisms), plus all the necessary accessories. Through close interaction with the global customer base, Johnson Pump is able to provide focused solutions that exactly match specific application requirements. This is facilitated by our modular approach to design - which allows greater interchangeability between component parts, thereby simplifying logistical aspects (thanks to the ordering and storing of fewer part numbers) and allowing a wider array of different pump variants to be covered using a smaller inventory. The Johnson Pump portfolio covers internal gear pumps, impeller pumps and circulation pumps. All of these items deliver strong performance and continued reliability. The Johnson Pump engineering team designs low noise operating equipment, and engineered coatings to protect against debris damage.
The drilling industry has roots dating back to the Han Dynasty in China. Improvements in rig power and equipment design have allowed for many advances in the way crude oil and natural gas are extracted from the ground. Diesel/electric oil drilling rigs can now drill wells more than 4 miles in depth. Drilling fluid, also called drilling mud, is used to help transfer the dirt or drill cuttings from the action of the drilling bit back to the surface for disposal. Drill cuttings can vary in shape and size depending on the formation or design of the drill bit used in the process.
Watch the video below to see how the EDDY Pump outperforms traditional pumps when it comes to high solids and high viscosity materials commonly found on oil rigs.
The fluid is charged into high-pressure mud pumps which pump the drilling mud down the drill string and out through the bit nozzles cleaning the hole and lubricating the drill bit so the bit can cut efficiently through the formation. The bit is cooled by the fluid and moves up the space between the pipe and the hole which is called the annulus. The fluid imparts a thin, tough layer on the inside of the hole to protect against fluid loss which can cause differential sticking.
The fluid rises through the blowout preventers and down the flowline to the shale shakers. Shale shakers are equipped with fine screens that separate drill cutting particles as fine as 50-74 microns. Table salt is around 100 microns, so these are fine cuttings that are deposited into the half-round or cuttings catch tank. The drilling fluid is further cleaned with the hydro-cyclones and centrifuges and is pumped back to the mixing area of the mud tanks where the process repeats.
The drill cuttings contain a layer of drilling fluid on the surface of the cuttings. As the size of the drill cuttings gets smaller the surface area expands exponentially which can cause rheological property problems with the fluid. The fluid will dehydrate and may become too thick or viscous to pump so solids control and dilution are important to the entire drilling process.
One of the most expensive and troubling issues with drilling operations is the handling, processing, and circulation of drilling mud along with disposing of the unwanted drill cuttings. The drilling cuttings deposited in the half round tank and are typically removed with an excavator that must move the contents of the waste bin or roll-off box. The excavators are usually rented for this duty and the equipment charges can range from $200-300/day. Add in the cost for the day and night manpower and the real cost for a single excavator can be as much as $1800/day.
Offshore drilling rigs follow a similar process in which the mud is loaded into empty drums and held on the oil platform. When a certain number of filled drums is met, the drums are then loaded onto barges or vessels which take the drilling mud to the shore to unload and dispose of.
Oil field drilling operations produce a tremendous volume of drill cuttings that need both removal and management. In most cases, the site managers also need to separate the cuttings from the drilling fluids so they can reuse the fluids. Storing the cuttings provides a free source of stable fill material for finished wells, while other companies choose to send them off to specialty landfills. Regardless of the final destination or use for the cuttings, drilling and dredging operations must have the right high solids slurry pumps to move them for transport, storage, or on-site processing. Exploring the differences in the various drilling fluids, cutting complications, and processing options will reveal why the EDDY Pump is the best fit for the job.
The Eddy Pump is designed to move slurry with solid content as high as 70-80 % depending on the material. This is an ideal application for pumping drill cuttings. Drill cuttings from the primary shakers are typically 50% solids and 50% liquids. The Eddy Pump moves these fluids efficiently and because of the large volute chamber and the design of the geometric rotor, there is very little wear on the pump, ensuring long life and greatly reduced maintenance cost for the lifetime of the pump.
plumbed to sweep the bottom of the collection tank and the pump is recessed into a sump allowing for a relatively clean tank when the solids are removed. The Eddy Pump is sized to load a roll-off box in 10-12 minutes. The benefit is cuttings handling is quicker, easier, safer, and allows for pre-planning loading where the labor of the solids control technician is not monopolized by loading cuttings. Here, in the below image, we’re loading 4 waste roll-off bins which will allow the safe removal of cuttings without fear of the half-round catch tank running over.
Mud cleaning systems such as mud shaker pumps and bentonite slurry pumps move the material over screens and through dryers and centrifuges to retrieve even the finest bits of stone and silt. However, the pump operators must still get the raw slurry to the drill cuttings treatment area with a power main pump. Slurry pumps designed around the power of an Eddy current offer the best performance for transferring cuttings throughout a treatment system.
Options vary depending on whether the company plans to handle drill cuttings treatment on-site or transport the materials to a remote landfill or processing facility. If the plan is to deposit the cuttings in a landfill or a long-term storage container, it’s best to invest in a pump capable of depositing the material directly into transport vehicles. Most dredging operations rely on multiple expensive vacuum trucks, secondary pumps, and extra pieces of equipment.
Using an EDDY Pump will allow a project to eliminate the need for excavators/operators to load drill cuttings, substantially lowering both labor and heavy equipment costs. The EDDY Pump also allows a company to eliminate vacuum trucks once used for cleaning the mud system for displacing fluids. Since the pump transfers muds of all types at constant pressure and velocity throughout a system of practically any size, there’s little need for extra equipment for manual transfer or clean up on the dredge site.
The EDDY Pump can fill up a truck in only 10 minutes (compared to an hour) by using a mechanical means such as an excavator. For this reason, most companies can afford one piece of equipment that can replace half a dozen other units.
This application for the Eddy Pump has the potential to revolutionize the drilling industry. Moving the excavator out of the “back yard” (the area behind the rig from the living quarters) will make cuttings handling a breeze. Trucking can be easier scheduled during daylight hours saving on overtime and incidences of fatigued driving. Rig-site forklifts can move the roll-off boxes out of the staging area and into the pump loading area. The operator can save money on excavators rental, damages, and keep the technician operating the solids control equipment.
The EDDY Pump is ideal for drilling mud pump applications and can be connected directly onto the drilling rigs to pump the drilling mud at distances over a mile for disposal. This eliminates the need for costly vacuum trucks and also the manpower needed to mechanically move the drilling mud. The reasons why the EDDY Pump is capable of moving the drilling mud is due to the hydrodynamic principle that the pump creates, which is similar to the EDDY current of a tornado. This tornado motion allows for the higher viscosity and specific gravity pumping ability. This along with the large tolerance between the volute and the rotor allows for large objects like rock cuttings to pass through the pump without obstruction. The large tolerance of the EDDY Pump also enables the pump to last many times longer than centrifugal pumps without the need for extended downtime or replacement parts. The EDDY Pump is the lowest total life cycle pump on the market.
features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps or Sludge pumps, diaphragm pumps are designed to pump mud, slurry, sewage, and thick liquids that have the ability to flow. Koshin Diaphragm pump Honda GX120 OHV gasoline engines. Built-in molded polyurethane flapper/check valve assures self-priming to 20 feet after initial prime. Each unit includes a 3" NPT steel suction strainer, two 3" NPT nipples, and wheel kit with 10" semi-pneumatic transport wheels for portability. Pumps are designed for use with non-flammable liquids which are compatible with pump component materials. Suction and discharge port size cannot be reduced.
Suction and discharge port size cannot be reduced. Due to positive pumping action of diaphragm pumps, by all mfr"s, the discharge is recommended to only be 25FT long unless oversized. Discharge can not be restricted. There is no relief valve.
When disassembling the impeller, use a special wrench to unscrew the impeller nut in the same direction as the impeller rotation, remove the retaining washer, and the impeller can be removed. If it can not be removed, the sleeve can be sleeved with a sleeve, and the casing head can be gently tapped with a hammer. After the impeller is loosened, it can be disassembled. If the impeller is rusted on the shaft, it is immersed in kerosene and then removed.
The coupling (or pulley) is keyed to the pump shaft. When disassembling, use a special tool (pull) to slowly pull the coupling (or pulley) from the shaft end. When disassembling the coupling, the lead screw should be placed on the front of the centrifugal pump shaft to force the coupling (pulley). Evenly, do not pull the hook, or use a hammer to avoid damage to the pump shaft, bearings and coupling.
Mud pumps are essential equipment for any oil or gas well. They are used to move drilling mud and other fluids needed during the drilling process. To select the right mud pump for your well, you need to understand the different types available and what each one can do.
In this article, we will take a comprehensive look at mud pumps and provide you with all the information you need to make an informed purchase. We will also discuss how mud pumps are used in drilling operations and highlight some of their key features. By the end of this article, you will clearly understand what mud pumps are and what they can do for your well.
A mud pump is a type of reciprocating positive displacement pump that is specifically designed for use in drilling operations. It helps to circulate the drilling fluid (or “mud”) through the drill bit and back up to the surface. The mud pump also provides pressure to keep the drill bit from becoming plugged.
The pump creates suction that pulls the drilling fluid from the pit and then uses its piston to push the fluid back up the well. This action not only circulates the fluid but also helps to remove any cuttings or debris that may have been generated during the drilling process. Mud pumps are an essential part of the drilling process and are typically used in conjunction with other pumps, such as centrifugal pumps, to create a complete pumping system. Without a mud pump, drilling would not be possible.
There are many different types of mud pumps, each with its own advantages and disadvantages. However, pump experts generally understand the requirement and then suggest which type of pump design would be more efficient. Here are five of the most popular types:
Piston mud pumps are the most common type of mud pump. They use a piston to draw mud from the pit and then force it to the drill bit through the hose. Piston mud pumps are very durable and can handle a lot of pressure. However, they are also very loud and can be challenging to operate.
Plunger mud pumps work similarly to piston mud pumps, but they use a plunger instead of a piston. As a result, plunger mud pumps are quieter than piston mud pumps and are easier to operate. However, plunger mud pumps are not as durable and can only handle a limited amount of pressure.
Hydraulic mud pumps use hydraulic power to draw mud from the pit. They are very powerful and can handle a lot of pressure. However, these types of pumps are generally costly and can be challenging to operate.
Diaphragm mud pumps use a diaphragm to draw mud from the pit. They are less powerful than hydraulic mud pumps but are much cheaper. They are also easier to operate. These merits make such pumps more used in small scale operations.
Peristaltic mud pumps use peristaltic action to draw mud from the pit. They are the most expensive type of mud pump but are also the most powerful. Unfortunately, they are also the most difficult to operate. But given their operational power, they are used in large-scale mining and drilling operations.
Even though mud pumps are very lucrative for mining and drilling purposes, they exhibit many more merits, making them useful in other industries. Following are some of the main advantages of mud pumps:
Mud pumps help to increase the efficiency of drilling operations by allowing for fluid circulation and cooling of the drill bit. This results in faster drilling and less wear on the equipment.
Mud pumps also help to improve safety during drilling operations by providing a means to circulate and cool the drill bit, which reduces the risk of overheating and fire.
Mud pumps can also help to improve the accuracy of drilling operations by preventing the drill bit from wandering off course due to excessive heat build-up.
The use of mud pumps can also help to reduce the costs associated with drilling operations by reducing the need for frequent replacement of drill bits and other worn items.
The use of mud pumps can also help to increase the productivity of drilling operations by reducing the downtime associated with the frequent replacement of drill bits and other worn items.
Mud pumps are an essential part of the oil and gas industry, as they are used to pump drilling fluid (mud) into the drill hole. There are many different mud pumps, each with its own unique set of features and applications. A reliable pump expert will help you choose which pump to use where. Here are 10 of the most common applications for mud pumps:
Mud pumps are extensively used to circulate drilling fluid during the drilling process. This helps to cool and lubricate the drill bit and remove cuttings from the hole.
Mud pumps are also used in hydraulic fracturing operations, where high-pressure fluid is injected into the rock formation to create fractures. The pump helps to circulate the fracturing fluid and keep the pressure at the desired level.
Mud pumps are sometimes used in geothermal operations to circulate water or other fluids through the drilled well. This helps extract heat from the rock and bring it to the surface.
In coal seam gas extraction, mud pumps are used to circulate water and chemicals through the coal seam to dissolve the methane gas and make it easier to extract.
In potash mining, mud pumps are used to circulate brine solution through the ore body to dissolve the potassium chloride (potash) and pump it out of the mine.
Mud pumps are often used in water well drilling operations to circulate water through the drill hole and help flush out any cuttings or debris. Pump experts can customize mud pumps to suit this application.
In tunnelling operations, mud pumps can circulate a slurry of water and clay through the drilling area. This helps to stabilize the walls of the tunnel and prevent collapse.
Mud pumps are sometimes used in pipeline operations to help clean and inspect the inside of the pipe. The pump circulates water or other fluids through the pipe to remove any build-up or debris.
In environmental remediation projects, mud pumps can circulate water or chemicals through contaminated soil or groundwater. This helps to break down contaminants and make them easier to remove.
Mud pumps can also be used in construction projects to help remove water from the site or stabilize the ground. For this application, they are extensively used in large construction sites.
Mud pumps are an essential part of many different industries and have various applications. If you need a mud pump for your next project, be sure to consult with a pump expert to find the right pump for your needs.
A mud pump (sometimes referred to as a mud drilling pump or drilling mud pump), is a reciprocating piston/plunger pump designed to circulate drilling fluid under high pressure (up to 7,500 psi or 52,000 kPa) down the drill string and back up the annulus. A mud pump is an important part of the equipment used for oil well drilling.
Mud pumps can be divided into single-acting pump and double-acting pump according to the completion times of the suction and drainage acting in one cycle of the piston"s reciprocating motion.
Mud pumps come in a variety of sizes and configurations but for the typical petroleum drilling rig, the triplex (three piston/plunger) mud pump is used. Duplex mud pumps (two piston/plungers) have generally been replaced by the triplex pump, but are still common in developing countries. Two later developments are the hex pump with six vertical pistons/plungers, and various quintuplexes with five horizontal piston/plungers. The advantages that these new pumps have over convention triplex pumps is a lower mud noise which assists with better measurement while drilling (MWD) and logging while drilling (LWD) decoding.
The fluid end produces the pumping process with valves, pistons, and liners. Because these components are high-wear items, modern pumps are designed to allow quick replacement of these parts.
To reduce severe vibration caused by the pumping process, these pumps incorporate both a suction and discharge pulsation dampener. These are connected to the inlet and outlet of the fluid end.
The pressure of the pump depends on the depth of the drilling hole, the resistance of flushing fluid (drilling fluid) through the channel, as well as the nature of the conveying drilling fluid. The deeper the drilling hole and the greater the pipeline resistance, the higher the pressure needed.
With the changes of drilling hole diameter and depth, the displacement of the pump can be adjusted accordingly. In the mud pump mechanism, the gearbox or hydraulic motor is equipped to adjust its speed and displacement. In order to accurately measure the changes in pressure and displacement, a flow meter and pressure gauge are installed in the mud pump.
The construction department should have a special maintenance worker that is responsible for the maintenance and repair of the machine. Mud pumps and other mechanical equipment should be inspected and maintained on a scheduled and timely basis to find and address problems ahead of time, in order to avoid unscheduled shutdown. The worker should attend to the size of the sediment particles; if large particles are found, the mud pump parts should be checked frequently for wear, to see if they need to be repaired or replaced. The wearing parts for mud pumps include pump casing, bearings, impeller, piston, liner, etc. Advanced anti-wear measures should be adopted to increase the service life of the wearing parts, which can reduce the investment cost of the project, and improve production efficiency. At the same time, wearing parts and other mud pump parts should be repaired rather than replaced when possible.
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.
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.
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.