mud pump offshore drilling brands

For the successful execution of your projects, it is important to find an appropriate company with a good track record. We help you in connecting with the top mud pump manufacturers and companies and get the best quotation.

The most widely used mud pumps across the industry are Triplex Reciprocating Pumps. Their application has gained immense popularity with time because they are 30% lighter than duplex reciprocating pumps with relatively less operational cost. Moreover, through these pumps the discharge of mud is smooth and they are capable of moving large volume of mud at higher pressure.

Yes. We help you find the best mud pumps irrespective of your location. We simplify your search by connecting you with top mud pump manufacturers and mud pump companies in your location, according to your budget and business requirement.

The most widely used mud pumps across the industry are Triplex Reciprocating Pumps. Their application has gained immense popularity with time because they are 30% lighter than duplex reciprocating pumps with relatively less operational cost. Moreover, through these pumps the discharge of mud is smooth and they are capable of moving large volume of mud at higher pressure.

The different parts of a mud pump are Housing itself, Liner with packing, Cover plus packing, Piston and piston rod, Suction valve and discharge valve with their seats, Stuffing box (only in double-acting pumps), Gland (only in double-acting pumps), and Pulsation dampener. A mud pump also includes mud pump liner, mud pump piston, modules, hydraulic seat pullers along with other parts.

The wearing parts of a mud pump should be checked frequently for repairing needs or replacement. The wearing parts include pump casing, bearings, impeller, piston, liner, etc. Advanced anti-wear measures should be taken up to enhance the service life of the wearing parts. This can effectively bring down the project costs and improve production efficiency.

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.

Distributor of heavy duty submersible mud, sand, sludge & slurry pumps. Specifications of pumps include 5 hp to 30 hp motor, three phase, 208 V to 575 V, 6.8 A to 39 A, 3 in. to 6 in. NPT sizes, 38 ft. to 134 ft. head size & 475 gpm to 1,690 gpm flow rate. Features include impellers, wear plates & agitators made from abrasive resistant 28 percent chrome iron, process hardened ductile iron volutes casted with thick walls, class H motor insulation, double silicon carbide mechanical seals, heavy duty lip seal & stainless steel shaft & shaft sleeve. Sand, sludge & slurry pumps are used in mines, quarries, dredging, coal & ore slurries, sewage treatment plants & steel mills. UL listed. CSA approved. Meets OSHA standards.

Bentec completely redeveloped the concept of Mud Pumps. Being equipped with a direct-driven gearbox, an own developed motor, and a state-of-the-art pump housing, there is no need for an internal gear coming with many disadvantages and no more belt tensioning.

Bentec Mud Pumps are light weight and have a small footprint. The AC-powered motor is top or rear mounted – suitable for any drilling rig arrangement. The pump is available with 5 000 or 7 500 psi fluid ends, and all its parts that are subject to wear and tear meet API standards and are available worldwide.

A handling crane makes it easy to handle the fluid end components. Furthermore, Bentec uses a patented liner and valve clamping technology to reduce the maintenance time significantly. A quick-change liner and piston system serves for easy maintenance. A special feature of the Bentec MUD PUMP is the side-mounted gear drive.

Liner cooling and gear oiler systems are included; a supercharge pump and a noise reduction package can be installed upon request. The Bentec MUD PUMP is the right choice especially when it comes to noise-sensitive environments such offshore or densely populated environments.

Beyond the supply of Mud Pumps, Bentec acts as system supplier. The pumps can be delivered together with a Bentec Power Control System and a Bentec Soft Pump System.

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 and manufactured according to API specification 7K.

The advantages of the drilling mud pump include the ability to move high-solids-content fluids laden with abrasives, the ability to pump large particles, ease of operation and maintenance, reliability, and the ability to operate over a wide range of pressures and flow rates by changing the diameter of pump liners and pistons.

As an important equipment for oilfield drilling operation, a drilling mud pump delivers circulating high-pressure drilling fluid or drilling mud to the bottom of the oil well, flushes the bottom of the well, breaks the rock, cools, lubricates and clean the drill bit, and carries the cuttings back to the ground.

The drilling mud is also used to suspend and carry out drill cuttings from the drill bits as it is brought in and out of the hole. This ensures that the drill bit does not clog and overheat, and makes the entire drilling operation smooth and safe.

Rotational power is supplied to the mud pump through an external power source like a diesel engine or electric motor. The power end of the mud pump converts the rotational energy through a crankshaft to a reciprocating motion of pistons.

The pistons move back and forth in mud pump liners, exerting a force on the cylinder chamber. During the retraction of the piston, valves open to allow the fluid to be drawn into the cylinder. Once the piston has fully retracted, it is pushed back into the cylinder.

An integral part of onshore and offshore drilling, mud pumps circulate the drilling fluids used to facilitate drilling oil and natural gas wells. Used to stabilize pressure and support the well during the drilling process, drilling fluids also provide friction reduction and a means to remove cuttings.

While drilling with some type of fluid has been in practice for centuries, the term "drilling mud" was coined when a herd of cattle was driven through a wet field near Spindletop, and the resulting mud was used to lubricate the drillstring and drill bit. Drilling fluids have come a long way since those early days of drilling, and offshore mud pumps are constantly taxed to help operators find and develop hydrocarbons in harsher, deeper and more difficult locations.

"A mud pump delivers drilling fluid from the mud tanks, through the top drive, down the drill string and through the bit," explained Juan Lerma, Mud Pumps Product Line Manager at National Oilwell Varco. "When the mud exits the bit, it travels back to the surface carrying the cuttings made by the bit where it flows over a shale-shaker removing the cuttings, cleaning the mud and returning it to the tanks, where it"s used over and over again."

Varying according to the conditions of well being drilled, as well as the type of rock formations the bit is encountering at each depth, drilling fluids are composed of numerous ingredients, including clay, water, oil and synthetic materials. When drilling offshore, the environmental impact of drilling fluids must be more closely considered.

"A mud pump is one of the critical and required pieces of equipment for a drilling rig whether on land or offshore," Lerma stated. "Offshore, where real estate is at a premium, mud pumps are configured with a compact top-mounted drive system, reducing the overall length with a smaller package and strategically placing it in the pump room for permanent installation."

There are a number of different situations encountered when drilling offshore. For example, while jackups focus on waters not exceeding a depth of 350 feet, drillships and semisubs can drill in waters measuring up to 12,000 feet deep.

"Jackups semis and drillships all use the same mud pumps; however, the number of pumps installed in the pump rooms changes from rig to rig depending on the drilling specifications," explained Lerma.

Additionally, the rock formations and pressure encountered when drilling may vary; HT/HP and environmental conditions also may affect the drilling process, as well as the drilling fluids chosen and mud pumps required.

"As the drilling programs require higher flows and higher pressures, it is necessary to increase pressure ratings and either increase the number of mud pumps required or utilize larger capacity mud pumps," Lerma continued. "Most early jackups utilized two mud pumps and piping systems rated for 5000 psi work pressures and 1600 horsepower, while most of today"s jackups have 7500 psi working pressure and up to four 2200 HP pumps piping systems."

According to information gathered by premium rig data service RigLogix, National Oilwell Varco leads the pack in providing mud pumps to offshore oil rigs. Of the top six brands of mud pumps, NOV supplies four of them, garnering more than 70% of the offshore mud pump market.

Those leading NOV brands include National Oilwell, Continental Emsco (which was acquired by NOV in 1999), National and NOV. The other leading mud pump system is provided by Gardner Denver and is the third most popular type of system offshore. Additionally, Lewco, a division of Rowan, has about 4% of the offshore mud pump market, putting it fifth on the list of leading suppliers.

With more than four decades of experience providing the offshore industry with mud pumps, Lerma revealed that the company has been able to sustain such a high market share by constantly transforming the product to meet the needs of the industry. As offshore drilling programs have required higher flows and pressures, the company has strived to provide the best quality equipment, while maintaining the lowest cost of ownership.

To better serve its offshore clients, the company developed the Hex Pump in the last several years, and this new line of mud pumps has proven a success in offshore waters worldwide. Boasting 2400 HP, the Hex pump is capable of delivering up to 1,034 gallons of drilling fluids per minute, making it one of the most powerful mud pumps on the market today.

In 2004, the first two Hex Pumps were deployed on a Global Santa Fe rig working offshore West Africa, and in 2005, both the Noble Max Smith and the Noble All While started using the Hex Pump as well. In fact, the Noble Al White, working in the harsh conditions of the North Sea, was the first rig to be solely dependent on the Hex Pumps with two of them located in its pump room, and the rig now has more than 8,000 hours of successful drilling operations using the system.

Through these successes, the company has been able to lock in orders for many of the newly built and under-construction offshore rigs joining the global fleet now and in the future.

"The first drillship to use the system, Transocean"s Discoverer Clear Leader just started drilling in the Gulf of Mexico with five Hex Pump systems," said Lerma. "Additionally, the soon-to-start-drilling Discoverer Americas houses four Hex Pumps, and the soon-to-be-delivered Discoverer Inspiration will have five."

We know that cost savings on identical spare parts is important for offshore rig Companies today. Therefore we provide our services and spare parts at considerable cost reductions compared to sourcing from the major OEMs. Tratec can guarantee identical parts with all required part certificates. We maintaing the highest quality, using state-of-the art service facilities and experienced, specialist mud pump engineers for service work.

Tratec has supplied more than 20 mud pump spare part, overhaul and recertification projects the last 5 years. References include rig companies Odfjell Drilling, Maersk Drilling, Archer, Saipem, KCA Deutag, and others.

Tratec is an experienced specialist supplier of overhaul, SPS, parts and service for rig and drilling equipment. We can provide Norwegian quality and decades of experience, while maintaning sensible prices and flexible solutions.

Tratec have delivered solid cost savings to our customers. This is due to our lower cost base, system with access to identical parts directly from manufacturer, and utilizing our experienced drilling equipment employees at very competitive rates.

Tratec can supply overhaul and parts compatible with the following Mud Pump makers and trademarks: National Oilwell Varco (NOV), MHWirth, Continental Emsco, Gardner Denver, Lewco, Drillmec, and others. Tratec is an independent supplier of drilling equipment parts. Tratec is neither a licensee, nor is affiliated with any of the named original equipment manufacturers (OEM). The manufacturer’s names, equipment names, or trademarks used herein are solely for identification purposes, and are not intended by Tratec to cause confusion as to the source, sponsorship, or quality of the parts supplied by Tratec. The original equipment manufacturers named above and throughout this website do not sponsor, promote, warranty or endorse Tratec’s supply of parts.

Tired of changing mud pump pistons? We have your solution. The TD will work in all types of drilling mud including oil based, synthetic and water based. It was specifically designed to work in applications where water based mud is used or in situations where WBM is used on the top side & OBM is used on the bottom end. This eliminates the need for changing the piston midway through the drilling program. The “TD” or “Total Depth” name reflects our commitment to make a single piston that will last from “spud” to “TD”. This piston has been engineered with a unique friction reducing material bonded into the urethane of the sealing lip. Because the TD is built to withstand friction in the liner, wear on your parts is minimized and savings is maximized. The Patriot™ TD is also designed to meet pressures of 7500 psi as well as temperatures up to 220 degrees.

Houston, Texas -- To eliminate equipment compatibility issues and the prospect of additional spare-parts inventories for drilling contractors, the LeTourneau Ellis Williams Company (LEWCO) can factory-equip its heavy-duty W-Series and general-duty WH-Series mud pumps with virtually any major brand of fluid end module. Customers not specifying a particular brand receive LEWCO"s standard one-piece or two-piece fluid end modules made of quenched and tempered forged steel, featuring "off the shelf" expendables readily available from domestic and international sources.

LEWCO mud pumps are in-house manufactured. For maximum quality assurance -- with job-ready performance verified in advance -- every pump is tested under full load prior to shipment, in the company"s fully equipped, million-dollar "mud pump laboratory." LEWCO pumps provide input ratings of 300 to 3,000 horsepower (224 kW to 2,237 kW) and deep-drilling discharge pressures as great as 7,500 pounds per square inch (527 kg/cm2). Their premium components include a pressurized lubrication system that force-feeds lubricant to all power-end bearings including upper and lower crosshead slides; a balanced forged steel crankshaft that reduces noise and vibration and helps extend component life throughout the pump; and a robust frame of double-wall, welded-steel, mounted on a heavy-duty oilfield skid.

The LeTourneau Ellis Williams Company builds high-performance mud pumps for oil and gas drilling (on land and offshore), petroleum production and processing, well-servicing, and horizontal directional drilling; as well as ancillary drilling products including pulsation dampeners; drawworks; rotary tables, transmissions, and drives; and swivels. Located in Houston, Texas, LEWCO is a wholly owned subsidiary of LeTourneau Incorporated, a leading manufacturer of self-elevating offshore drilling rigs, forestry equipment, and wheel loaders.

For more information, contact the LEWCO Sales Department at 6500 Brittmoore Road, Houston, TX 77241-1343; telephone 1-888-MUD-PUMP (683-7867), fax 713-856-5341; e-mail pumps@lewco-equip.com. Or visit www.lewco-equip.com.

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.

Solids control equipment including shakers, hydro-cyclones, and centrifuges are utilized to clean the drill cuttings from the drilling fluid, which then allows it to be reused and recirculated. The circuit includes the mixing of the drilling fluid in the rig tanks.

The drilling fluid is prepared to control fluid loss to the formation by the addition of chemicals or mineral agents. Commercial barite or other weighting agents are added to control the hydrostatic pressure exuded on the bottom of the well which controls formation pressures preventing fluid or gas intrusion into the wellbore.

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.

Bruce Suggs, vice president of marketing and sales for White Star, speaks with DC editorial coordinator Katherine Scott about White Star’s quadraplex mud pump at its headquarters in Waller, Texas, on 17 February.

Drilling Contractor visited the manufacturing facility of White Star Pump Company in Waller, Texas, on 17 February to view a demonstration of the company’s quadraplex mud pump, which was designed to address the challenges of the conventional triplex pump.

“After working on all the different brands of (triplex) pumps, it became evident that they all had the same common issues,” said Bruce Suggs, vice president of marketing and sales for White Star. “(We) tried to build a triplex and ended up with the Quatro.”

Instead of taking an existing triplex pump and trying to make it better, White Star approached the project with a clean-sheet design. The Quatro pump features a width of only 82 in. and easily fits on a standard-width trailer, a potential advantage in areas with limited space, such as on offshore rigs and in shale plays like the Marcellus. With the fluid modules sitting inside the frame, change-out time can be reduced to 23 minutes versus up to 10 hours for conventional triplex pumps. The quadraplex pump also uses a fully assembled crankshaft that requires no castings or welding. Using a crankshaft that is fully assembled and supported by modern bearing placement dramatically reduces crankshaft bending and cracking.

Additionally, the Quatro is equipped with two pulsation dampeners, one for each pair of pistons, unlike the triplex, which carries only one. This allows mud to be dampened before it gets to the strain across, creating a quieter, smoother fluid flow and reducing vibrations.

The land drilling market worldwide is structured primarily as a rental market, not a sales market, where land drilling companies lease their rigs to E&P companies for an agreed period of time – weeks, months, or years – at a day-rate. The rigs are then used to drill wells and execute the E&P’s drilling programs.

Drilling opportunities are analysed and explored in order, leaving a series of dry holes, until a discovery is made. It is rare for an E&P company to actually own the rigs which they operate, but there are some exceptions such as Chesapeake, who will purchase their own fleet of rigs.

Investors require a minimum level of return for their investment dollars in drilling operations, and typically equate cost with risk. These turnkey drilling contracts may limit risk by guaranteeing a minimum number of wells that can be drilled with the rig. The contract will also outline how the rig can be used – including the pieces of equipment, when to change pieces, temperature and pressure tolerances and the weight of mud.

The International Association of Drilling Contractors (IADC) lists 547 members in the category of Land Drilling Contractors. According to Statista, the key US land drilling contractors are: Nabors Industries Ltd, Helmerich & Payne Inc, Patterson-UTI Energy Inc, Precision Drilling Corporation and Pioneer Energy Services Corp.

Nabors operates the world’s largest land drilling rig fleet, with around 500 rigs operating in over 25 countries – in almost every significant O&G basin on the planet. It also has the largest number of high-specification rigs (including new AC rigs and refurbished SCR rigs) and custom rigs, built to withstand challenging conditions such as extreme cold, desert and many complex shale plays.

Headquartered in Tulsa, Oklahoma, H&P is a global business with land operations across the US, as well as offshore operations in the Gulf of Mexico. It is engaged primarily in the drilling of O&G wells for E&P companies, and recognised for its innovative FlexRig technology.

Patterson-UTI operates land based drilling rigs, primarily in O&G producing regions of the continental US, and western Canada. The company also provides pressure pumping services to US E&P companies and specialist technology, notably pipe handling components, to drilling contractors globally.

Precision is an oilfield services company and Canada’s largest drilling rig contractor, with over 240 rigs in operation worldwide. The Company has two segments. The Contract Drilling Services segment operates its rigs in Canada, the United States and internationally. The Completion and Production Services segment provides completion and workover services and ancillary services to O&G E&P companies in Canada and the US.

Pioneer operates a modern fleet of more than 24 top performing drilling rigs throughout onshore O&G producing regions of the US and Colombia. The company also offers production services include well servicing, wireline, and coiled tubing services – supported by 100 well-servicing rigs, and more than 100 cased-hole, open-hole and offshore wireline units.

Together these five companies dominate the US rental market. Other smaller but prominent contractors include: Parker Drilling, Unit Corp, Independence Contract Drilling, Seventy Seven Energy, Schramm and Ensign Drilling. Beyond these players, the market is highly fractured, with many “mom & pop” style drillers.

In Texas, generally considered to be the centre of US land drilling, RigData reports that there are currently 678 active rigs – split between Helmerich & Payne (160), Patterson-UTI (85), Nabors (64), Precision Drilling (39) and 77 other drillers (330).

Most new onshore rigs, both drilling and work over rigs, are built by OEMs in China. In the US, the larger vertically integrated land drillers have in-house manufacturing operations, so they will outsource some equipment construction, but assemble the new rigs at their own facilities. The leading provider of US newbuild rigs is National Oilwell Varco.