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STP Brochure
- 1. Sand-Tolerant Pump Extending pump runtime, reducing workover costs, and optimizing production in sandy, rod-pumped wells PRODUCTION
- 2. Sand-tolerant pumps represent only a fraction of our production solutions. With unparalleled experience and an unmatched breadth and depth of solutions for all forms of artificial lift, we can optimize production in any well. Our customer service centers are conveniently located in every major oil-producing area of the world to efficiently address your needs, wherever you operate. We also offer comprehensive artificial-lift training programs that enhance your team’s expertise and productivity. Get more life from your wells.™ Increases pump runtime by up to Performs in temperatures up to Operates at depths down to 450% 360°F(182°C) 9,000 ft (2,743 m)
- 3. Keep your pumps running longer, your workover costs lower, and your production levels higher. Rod pumps inevitably wear over time. With high sand production, this destructive wear can occur at unacceptable levels. Abrasive sand accumulating within the barrel/plunger interface damages both the barrel and the plunger and results in decreased pump efficiency or total failure. Preventing sand from wearing these moving parts of your pumps can extend equipment life and reduce the frequency of workovers along with the associated costs, downtime, and production losses. The Weatherford sand-tolerant pump (STP) restores economic viability to extremely sandy, rod-pumped wells. Based on field results, the STP works more than four times longer in sandy conditions than conventional rod pumps by lubricating the plunger/barrel interface without letting sand enter this critical area. By means of specialized screens that stop sand and a unique design that cleans the screens on every stroke, the sand is cleared from the pump and produced to the surface. The STP is available in most standard API pump sizes and can operate in a variety of well conditions to increase run life without negative effects on pump performance. For rod-pumped wells in sand-laden fields around the world, this patented technology represents a vast improvement in pump design. It reduces downtime, workovers, rig time, and overall operating expenses, all of which are essential to maintaining profitability in high- and low-producing sandy wells.
- 4. The Weatherford STP helps you reduce sand damage by moving sand upward through the pump and away from the barrel/plunger interface. Two unique components are the keys to the efficient and reliable performance of the STP: the wiper assembly and the filter coupling. No other comparable product matches the ability of these parts to contain and mitigate sand damage. Equalization Ports A simple yet innovative design reduces sand damage. The STP is available in most standard API pump sizes and operates in most well conditions without affecting pump performance. Specifications Tubing Size (in.) Pump Type 1-1/4 RH, RW 1-1/2 RH, RW 1-3/4 RH, TH 2 RH, RW 2-1/4 RX, TH 2-3/4 TH Wiper Assembly The outside of the wiper assembly creates a barrier that keeps sand out of the plunger/barrel interface by continuously pushing the sand upward while the internal components of the assembly prevent sand from falling back into the plunger. Several different assembly configurations and materials are available to suit your specific well conditions. Because the wiper also prevents sandy produced fluid from entering between the plunger and the barrel, this critical area is no longer lubricated by the fluid above the pump. However, the filter coupling overcomes this potential problem. Filter Coupling The filter coupling enables only clean produced fluid to pass through the equalization ports to the plunger/barrel interface, which provides the necessary lubrication for the pump as the plunger moves up and down. The filter coupling has an internal screen that prevents sand from escaping through the equalizer ports with the fluid. Because the filters move with the plunger, the sweeping action of the fluid on the downstroke cleans the filters and keeps sand suspended within the production fluid. The sand-laden fluid is then produced through the center of the plunger to the surface.
- 5. © 2015 Weatherford. All rights reserved. Pump Barrel
- 6. weatherford.com Weatherford products and services are subject to the Company’s standard terms and conditions, available on request or at weatherford.com. For more information contact an authorized Weatherford representative. Unless noted otherwise, trademarks and service marks herein are the property of Weatherford and may be registered in the United States and/or other countries. Weatherford products named herein may be protected by one or more U.S. and/or foreign patents. Specifications are subject to change without notice. Weatherford sells its products and services in accordance with the terms and conditions set forth in the applicable contract between Weatherford and the client. © 2015 Weatherford. All rights reserved. 11512.00 The Weatherford sand-tolerant pump (STP) is a viable alternative to deploying standard rod pumps in wells with high sand production. By mitigating sand damage, the STP extends pump runtime, reduces workovers, and avoids production losses. To learn more about our comprehensive portfolio of artificial-lift technologies and whether the STP is the best solution for your wells, contact your authorized Weatherford representative or email PO-Info@weatherford.com.