API 11AX PDF

It is comprised of seven parts, separated by dashes. Example: RHBM Each part, in order, describes the following specifications: Nominal tubing size inch — given as a key representing the actual size Basic bore size inch Type of pump, type of barrel, location and type of seating assembly letter code Barrel length ft Length of upper extension, used with heavy-wall barrel inch Length of lower extension, used with heavy-wall barrel inch Important Properties of API Sucker Rod Pumps The field of application of an API subsurface pump is mainly determined by the type of pump, type of barrel and location of the seating assembly. The following section provides you with everything you need to know on this matter API pump designation letter codes given in parenthesis. Type of Pump Rod pump, R — A rod pump, also called insert pump, is mounted inside the tubing string.

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Ellis Manufacturing Products Pumps Ellis manufactures a complete line of sub-surface sucker rod pumps for oil production in compliance with API 11AX quality management system. Barrels Pump barrels are available for a wide variety of pumping conditions, ranging from mild to extremely abrasive and corrosive service.

Barrels are internally hardened, chrome plated or nickel carbide plated for superior performance. Seats are lapped with appropriate size balls to ensure a fluid tight seal. Materials include stainless steel, cobalt alloy, tungsten carbide, nickel carbide, titanium carbide and silicon nitride. E-Hard Plungers The friction between barrel and plunger is a very important factor to be taken into consideration during the pump selection and the service life of the assembly will depend on that fact.

Choosing the correct clearance, and thus permitting formation of a lubricant between working surfaces, will lead to an optimum performance of the pump. That is why that dimensional precision and the surface finishing of the plunger determine the reliability of the plunger. Standard materials include alloy steel, stainless, navel brass, and R monel.

Shear Tools The Ellis Manufacturing shear tool is a straight line pull safety joint release that provides a means of disconnecting the sucker rod string from the pump below the tool. This type of tool must be used to release fiberglass rod since they cannot be rotated. The Ellis shear tool is tested by a lot sample during manufacturing to assure that it releases at the required pull load.

Left Hand Coupler The Ellis left hand coupler is used as a safety joint in the sucker rod string when an operator suspects that an insert pump may become stuck in the seating nipple, preventing pulling of the pump. It is released by applying weight to the rod string clutching valve rod bushing to the clutch of valve rod guide. Left hand coupler is released by applying right hand rotation to sucker rod string. It is available in alloy steel, navel brass, and stainless in all API sucker rod pin sizes.

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Ellis Manufacturing Products Pumps Ellis manufactures a complete line of sub-surface sucker rod pumps for oil production in compliance with API 11AX quality management system. Barrels Pump barrels are available for a wide variety of pumping conditions, ranging from mild to extremely abrasive and corrosive service. Barrels are internally hardened, chrome plated or nickel carbide plated for superior performance. Seats are lapped with appropriate size balls to ensure a fluid tight seal. Materials include stainless steel, cobalt alloy, tungsten carbide, nickel carbide, titanium carbide and silicon nitride. E-Hard Plungers The friction between barrel and plunger is a very important factor to be taken into consideration during the pump selection and the service life of the assembly will depend on that fact. Choosing the correct clearance, and thus permitting formation of a lubricant between working surfaces, will lead to an optimum performance of the pump.

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