VALPECA produces a complete line of pumps for oil extraction, according to API 11AX specifications, as well as pumps and their replacement parts for special production conditions, manufactured with different materials to meet clients’ needs.
All these products are manufactured in the Comodoro Rivadavia Industrial Plant, in compliance with API Q1 and ISO 9001 international standards.
The description of a complete pump includes: nominal tubing size, basic pump bore, type of pump including type of barrel, location and type of seating assembly, barrel length in feet, nominal plunger length in feet, and total length of every extensions in feet, if corresponds. The way to express this and the meaning of each part of the code is detailed in the table below:
Additionally, to complete the pump description, the following information must be provided:
Friction between barrel and plunger is a very important factor to consider when designing pumps, since it will determine their run life.
The correct choice of the clearance, so as to enable the formation of a lubricating layer between working surfaces, will result in a high-performing unit. Therefore, precision and surface finishing determine the plunger reliability.
There are many types of plungers made from different materials, so that they can be adapted to different fluids, uses and working conditions. However, the most widely used has an outside coating. Its adherence, thickness, uniformity and hardness will be key factors in determining its durability.
The most commonly used materials and their main features are:
Our barrels comply with strict controls from reception of raw materials to packaging inspection.
Quality control is performed to each manufactured piece, guaranteeing 100% of compliance with international quality standards. Barrels are manufactured using the most modern techniques of precision honing and polishing to obtain an internal mirror-polish surface.
Valpeca provides the following barrel qualities:
Pump parts and fittings are manufactured by Bolland in compliance with strict standards that ensure their quality and interchangeability.
These parts are made of the following materials:
All cages are manufactured under strict standards that ensure the quality and interchangeability stated in API 11AX specification, and come in the following types:
Pump valves are made up of seats and balls and are a key component that works under high hydraulic pressure due to depth. Only a perfect design and the right choice of materials can guarantee their run life.
Bolland offers the following types and materials that can be combined in different ways:
|ST – Stainless Steel||AISI – 440 C||Seat 77 a 79 HRA|
|Seat and Ball||Heat-treated||Ball 80 a 84 HRA|
|M – Maxalloy ( Stellite )||Co, Cr and W alloy||Seat 50 a 56 HRc|
|Seat and Ball||Ball 56 a 63 HRc|
|C – Tungsten Carbide||Tungsten Carbide||Seat 88 a 89 HRA|
|Seat and Ball||Ball 88 a 89 HRA|
|CN – Tungsten Carbide||Seat – Tungsten Carbide||Seat 88 a 89 HRA|
|with Silicon Nitride||Ball – Silicon Nitride||Ball 89 a 90 HRA|
|CT – Tungsten Carbide||Seat – Tungsten Carbide||Seat 88 a 89 HRA|
|Correr with Titanium Carbide||Ball – Titanium Carbide||Ball 89 a 90 HRA|
|CM – Tungsten Carbide||Seat – Tungsten Carbide||Seat 88 a 89 HRA|
|with Maxalloy||Ball – Co, Cr and W alloy||Ball 56 a 63 HRc|
|CI – Tungsten Carbide||Seat – Tungsten Carbide||Seat 88 a 89 HRA|
|with Stainless Steel||Ball – AISI 440 C||Ball 80 a 84 HRA|
|CQ – Tungsten Carbide||Seat – Tungsten Carbide||Seat 88 a 89 HRA|
|Correr with Nickel Carbide||Ball – Nickel Carbide||Ball 89 a 90 HRA|
|Q – Nickel Carbide||Nickel Carbide||Seat 88 a 89 HRA|
|Seat and Ball||Ball 89 a 90 HRA|
Polished Rods are manufactured through microcracked hard chrome chromed process, in compliance with API-11B specification and ISO 9001 Quality Certification.
Type: AISI 4140 Steel – API-11B; B.3.3 b).
Yield strength: 95 to 160 ksi (655 MPa to 1103 MPa)
Type: Highly efficient electrolytic microcracked hard Chrome, hardness 67 to 71 HRC, which generates these features:
Cold drawn, with high mechanical resistance.
Dimensions according to API 11B specification.
Diameters: 1 ½ and 1 ¼ inches.
Length: up to 36 feet.
Cylindricity: 0.02 mm (0.001”) maximum.
Straightness: Better than 0.2 mm per meter (0.01” per 3.3ft).
We have a professional maintenance and repair workshop for mechanical pumps with the highest quality in service. The workshop is supervised and managed by professionals in the field dedicated and committed to delivering the best service and attention.
Services we offer
With the aim of providing our clients with the best service, we offer:
Technical reports of all the pumps repaired in our shops, with a detailed description of the extracted pump components including photographic logs of those parts showing corrosive attack, scale, sand lock, deformations, etc. We have a web-based tracking system with exclusive information for each client.
New products development, in order to achieve the appropriate performance and run life in wells under particularly demanding production conditions.
Changes in design and use of new materials, in line with our policy for continuous improvement of the products and services we provide.