API 11ax Oil Well Subsurface Sucker Rod Tubing Pump
August 22 06:11:47, 2025
API 11AX Oil Well Subsurface Sucker Rod Tubing Pump
1) Standard: API 11AX
2) API and ISO certified
3) Type: Tubing Pump
4) Photo
5) Description
The workover process of the tubing pump involves first connecting the barrel to the tubing and running it into the well at the desired depth. Then, the plunger is inserted into the barrel using the sucker rod.
6) Working Principle
During the upper stroke, the plunger is located at the bottom of the tubing pump. Due to hydraulic pressure from the upper tubing, both the up and traveling valves close. As the plunger moves upward, the stationary valve opens, allowing oil to flow through the pump. Since the bottom pressure is higher than the upper pressure, the fluid is forced through the stationary valve and into the tubing. During the down stroke, the traveling valve opens, and the pressure drives the oil into the plunger from the side hole of the extractor, then into the tubing.
7) Structure
The subsurface sucker rod pump consists of several key components including the tubing coupling, extension nipple, barrel coupling, barrel, traveling valve, plunger, extractor, and stationary valve.
8) Parameter
Tubing Pump
| Specification | Nominal Bore (In/mm) | Plunger Length (Ft/m) | Ma. O.D. (mm) | Rod (In) | Tubing (In) | Stroke (Ft/m) |
|--------------|----------------------|------------------------|----------------|----------|-------------|----------------|
| 20-125TH | 1.25(32) | 4-6 (1.2-1.8) | 73 | 3/4 | 2 3/8 | 26.25(8.0) |
| 20-150TH | 1.50(38) | | 73 | 3/4 (5/8)| 2 3/8 | |
| 20-175TH | 1.75(44) | | 73 | 3/4 | 2 3/8 | |
| 25-175TH | 1.75(44) | | 88.9 | 3/4 | 2 7/8 | |
| 25-200TH | 2.00(51) | | 88.9 | 3/4 | 2 7/8 | |
| 25-250TH | 2.50(63.5) | | 88.9 | 3/4 | 3 1/2 | |
| 30-275TH | 2.75(70) | | 108 | 3/4 | 3 1/2 | |
| 35-325TH | 3.25(83) | | 116 | 3/4 | 4 1/2 | |
| 40-375TH | 3.75(95) | | 116 | 1 | 4 | |
9) Material and Surface Treatment
| Parts | Material, Surface treatment | Special requirements |
|---------------|-------------------------------------------------------------------|----------------------------|
| Barrel | Carbon Steel, Chrome plate, nickel-phosphorous plate, carbonitriding, carburized | Brass barrel |
| Plunger | Carbon steel, nickel spray, chrome plate | Double chrome plate |
| Ball & Seat | Stainless steel, Tungsten carbide, Titanium carbide | Nickel carbide |
| Cage | Alloy steel | Hard-lined |
**Package**
**Certificate**
**Company Information**
Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipment and cementing accessories since 1997, and a restructured enterprise of SINOPEC. We have certificates such as API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001, and ISO 14001.
Our products mainly include: Casing Centralizer, Float Collar & Float Shoe, Cementing Plug, Cementing Head, Cement Basket, Tubing Pump / Rod Pump, Valve Ball & Seat, Casing / Tubing Pipe and Coupling, Stage Collar, Pumping Unit, Air Blaster, and Sucker Rod.
With over 10 years of export experience and 9 subsidiary factories, we have more than 500 employees. We are a top-tier supplier for SINOPEC and CNPC. Our international customers are mainly from America, Central Asia, Russia, Southeast Asia, and the Middle East.
**Contact Us**
PUYANG ZHONGSHI GROUP CO., LTD
Add: 5th community, Zhongyuan Oilfield, Puyang, China
Tel: 0086-371-87096211 / 15838304721
Fax: 0086-371-87096212
Website: www.zs-oilfieldequip.com; www.chinajixie.com; www.casingcentralizer.com
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