The Industry Standard
Halliburton’s HT-400? Pump is a lightweight, rugged,
versatile unit that was introduced in 1957. Its name denotes
Horizontal Triplex and its original rating of 400 horsepower. Since its debut, the basic design has been improved and upgraded until it now is rated at 800 hp maximum in some configurations. The pump has performed millions of operating hours in fracturing, acidizing, cementing, and sand and water control work.
The Halliburton twin-pump or flexibility concept is particularly useful when precise pumping ranges and controls are required. Halliburton exclusively manufactured the HT-400 pump power end, so that practically all parts are interchangeable. The exception is that the power end case is built in both left- and right-hand configurations. Internal parts, including the proven worm/ring gear sets, are identical, only the case is different. Power ends can be fitted with any of the five sizes of fluid ends – 3 3/8”, 4”, 4 ?”, 5” and 6” plungers – each with characteristics suitable for specific applications. Power end components: ? Case and Drive Gears: Power End cases are manufactured exclusively by Halliburton in both leftand right-hand models. They are made of highstrength weldments of Halliburton design. They are not interchangeable. ? Crankshaft: Heat-treated steel forgings are used to manufacture crankshafts. All cranks are the same, even for left- and right-hand units. ? Connecting Rods: Connecting rods are made from aluminum forgings. The identical rods are internally drilled to provide lubrication to the crosshead pins. ? Crossheads: Crosshead bodies are made of heat-treated steel alloy castings. They are fitted with replaceable, highleaded bronze shoes on both top and bottom. ? Lubrication: Standard self-contained power end lubrication system is pressurized by an internal crescent gear-type pump driven off the end of the worm gear. Positive pressure lubrication is supplied to the crosshead slides, gear support bearings, crankshaft throws and crosshead pins. ? Cooling: Tube-and-shell coolers are optional add-on components, which provide remote cooling capacity. The HT-400 pump can be fitted with radiator-type, air-to-oil or water-to-oil cooling systems as well.
Fluid end view
Spacers are special components designed to separate the fluid end from the power end of the HT-400 pump. The interchangeable spacer insures that fluids being pumped do not contaminate the power end and cause premature failures. Each fluid end package is manufactured from three separate chambers – all identical and completely interchangeable. If one chamber of a fluid end should cause trouble, it can be changed quickly and the pump returned to duty. Fluid End components: ? Chambers: The fluid end is constructed from three separate but identical forged and heat-treated chambers. Fluid ends can be supplied in any of five plunger sizes and each size can be fitted to the standard power end without alteration of either fluid or power end. ? Valves and valve seats: Fluid ends are fitted with replaceable, carburized valves and seats of Halliburton design and manufacture. Most of the valve assembly parts are interchangeable between suction and discharge ports within a given size and some are even interchangeable between sizes. ? Lubrication: A separate lubrication system supplies lubricant to the fluid end package.
Each HT-400 pump undergoes rigorous testing before it is placed in service. Fluid end chambers are tested individually to pressures far beyond the anticipated operating pressures and then tested again when they are assembled into three-chamber fluid ends. A third test is performed after the fluid end is attached to the power end assembly. Power ends are submitted to equally rigorous testing in a Halliburton test facility. Pumps are run for over an hour at various speeds and at various pumping pressures before they are installed on a unit. After the unit is completed, each pump is further tested during the unit checkout.
Mounted on a skid — close-up
Plunger Dia., Inches Maximum Pressure Maximum Rate @ 275 Crankshaft RPM GPM BPM Maximum HP Input 810 19.3 800 560 13.3 800 454 10.8 800 360 8.6 800 255 6.1 800 6 in. 6,250 5 in. 9,000 4 1/2 in. 4 in. 3 3/8 in. 11,200 14,000 20,000
Plunger Dia., Inches Maximum Pressure Maximum Rate @ 75 Crankshaft RPM GPM BPM Maximum HP Input
6 in. 3,000 221 5.3 275
5 in. 4,500 153 3.6 275
4 1/2 in. 4 in. 3 3/8 in. 5,600 124 2.9 275 7,000 98 2.3 275 10,000 65 1.5 275
Fluid end ring gear view
Mounted on Advantage? skid unit — side view
H04798 04/06 ? 2006 Halliburton All Rights Reserved Printed in U.S.A. Sales of Halliburton products and services will be in accord solely with the terms and conditions contained in the contract between Halliburton and the customer that is applicable to the sale.