Thick-wall and sturdy are among the main features of the API tubing pump TH Tubing Pump, which is solely meant for the production heavy-loading oil wells. In fact, the strength of their structure and the stability of production have become essential for them to be in such situations as deep wells, high-pressure reservoirs, and corrosive environments.
Compared to a rod pump, the TH tubing pump is able to provide higher displacement capacity and much stronger mechanical integrity. So, it shouldnʼt be underrated as the first choice for long-term, high-output oil production.
| Standard drawing system specifications | ||||
|
| 2 3/8x1 3/4(60.3x44.5) | 2 7/8x2 1/4(73.0x57.2) | 3 1/2×2 3/4 | 41/2×3 3/4 |
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| Pump code | |||
|
| 20-175 THC | 25-225 TIC | 30-275 THC | 40-375THC |
symbol | name | Piece number | |||
B23 | Valve cover reducing joint with extractor (optional) | —— | —— | —— | B23-40 |
B13 | Thick-walled pump cylinder | B13-175 | B13-225 | B13-275 | B13-375 |
C11 | Plunger upper open valve cover | C11-20 | C11-25 | C1-30 | C11-40 |
C13 | Column cold group valve cover | C13-175 | C13-225 | C13-275 | C13-375 |
C16 | Fixed valve cover | C16-175 | C16-225 | C16-275 | C16-375 |
C34 | Tubing coupling | C34-20 | C34-25 | C34-30 | C34-40 |
C35 | Pump cylinder coupling | C35-20 | C35-25 | C35-30 | C35-40 |
N12 | Mechanical support joint | —— | —— | —— | N12-40 |
N13 | Support joint | N13-20 | N13-25 | N13-30 |
|
N21 | The upper part is lengthened and short section | N21-20 | N21-25 | N21-30 | N21-40 |
N22 | The lower part is lengthened and short section | N22-20 | V22-25 | N22-30 | N22-40 |
P21 | Integral plunger | P21-175 | P21-225 | P21-275 | P21-375 |
P31 | Fixed valve extractor | P31-175 | P31-225 | P31-275 | P31-375 |
S13 | Support leather bowl seat ring (HR type) | S13-20 | S13-25 | S13-30 | —— |
S14 | Support leather bowl pressure cap (HR type) | S14-20 | S14-25 | S14-30 | —— |
S16 | Support leather bowl coupling | S16-20 | S16-25 | S16-30 | —— |
S17 | Support leather bowl mandrel (HR type) | S17-20 | S17-25 | S17-30 | —— |
S18 | Support leather bowl (HR type) | S18-20 | S18-25 | S18-30 | —— |
V11 | Valve ball and seat |
|
|
|
|
| Swimming valve | V11-175 | V11-225 | V11-250 | V11-375 |
| Fixed valve | V11-175 | V11-225 | V11-250 | V11-375 |
S22 | Mechanical bottom locking support assembly | —— | —— |
| S22-40 |
|
| 20-175 THC abe | 25-225 THC abe | 30-275 THC abc | 40-375 THabce |
| Optional plunger assembly |
|
|
|
|
C15 | Internal thread plunger closed valve cover | C15-175 | C15-225 | C15-275 | C15-375 |
C22 | Internal thread plunger joint | C22-175 | C22-225 | C22-275 | C22-375 |
P23 | Internal thread plunger | P23-175b | P23-225 | P23-275 | P23-375 |
Note: All sizes are in millimeters, and inches are in brackets. | |||||
"The length of the pump barrel is specified in meters (feet), and the standard length is: 0.61m (2ft) to 12.19m (40ft), and the length is incremented by every 0.305m (1ft). Specify the nominal plunger length in meters (feet), and the mating gap is a few hundredths of a millimeter (a few thousandths of an inch). The total length of the lengthened short section is specified in meters (feet), and the standard length is 0.610m (2ft) and 0.914m (3ft). Replacing the P31-375 extractor with the P31-275 extractor is only suitable for pumps with a specification of 4-1/2X3-3/4. When using the B23-40 reducer connector, the P31-275 extractor can be selected. See Annex C for the definition of the symbols of the pump parts. | |||||
Heavy Wall Barrel Construction
This feature makes the equipment far stronger and less vulnerable to deformation when operating under high-pressure conditions.
Large Output Capacity
Using a larger pump bore will move more liquid than an insert pump.
Wear & Corrosion Resistance
In addition to the base metal, other elements such as alloy steel, chrome plating, and stainless steel also contribute to the pumps' durability even under very tough conditions.
Varied Material Selections
Made-to-order configurations suitable for H2S, CO2, and high-sand wells.

Deep oil wells with large production capacity
High-pressure reservoirs where strong structural integrity is essential
Highly corrosive environments with H2S and CO2
Wells with high sand production requiring the use of wear-resistant materials
Existing production wells where reliability is the top priority
| Comparison Factor | TH Tubing Pump | Insert Rod Pump |
| Installation Method | Installed as part of the tubing string | Installed inside the tubing |
| Production Capacity | Higher output, suitable for high-volume production wells | Lower output, suitable for standard production wells |
| Well Depth Suitability | Suitable for deep wells | Suitable for shallow to medium-depth wells |
| Pressure Resistance | Performs well in high-pressure well conditions | Limited performance under high-pressure conditions |
| Maintenance Method | Requires pulling tubing for servicing | Easier maintenance without pulling tubing |
| Structural Strength | Heavy-wall design with higher overall strength | Standard structure with moderate strength |
| Application Scenarios | High-output, deep wells, high-pressure and harsh environments | Cost-sensitive, maintenance-friendly conventional wells |
Some of the factors you need to consider before selecting and purchasing a TH tubing pump are given below:
How Deep is the Well?
The deeper your well is, the more reason you will have to opt for the heavy-wall tubing pumps that can provide you enhanced stability.
Working Pressure
If wells are operating under maximum pressure, a thicker barrel construction will be more effective.
The Nature of Fluid
Where corrosive substances are involved, then stainless steel or other special alloy materials would be the appropriate ones.
Are there any Sand Particles?
Under the presence of heavy sand, the decision of using either hardened or coated plungers will be a good one.
It is certified as per API 11AX standard.
It is manufactured in an ISO 9001 quality management system environment
More than 20 years of experience in producing oilfield equipment.
No failure to underperform in oilfields around the world.
It is developed and made 100% matching the well conditions.
Technical support and competent performance along with a quick
Q: Which wells are TH tubing pumps most suitable for?
A: They would be the perfect choice for deep wells, high-pressure reservoirs, and high-output production systems.
Q: What makes TH pumps different from insert pumps?
A: TH pumps are capable of processing a larger volume. Insert pumps, on the contrary, can be serviced simply by replacing the internal parts without the need to remove the tubing.
Q: Can the types of materials be changed?
A: Absolutely, the materials that are used depend on the level of corrosion and wear of the environment.
Q: Which rules are the pump following?
A: This is in line with API 11AX standard.
Tieling Dongsheng Petroleum Machinery Co., Ltd. started its business in 2000. This company is located in Tieling City, Liaoning Province. It covers a production area of more than 20,000 sq.m. and going back to the history, it has 26 years of experience in R&D and manufacturing of petroleum equipment. At present, the company has a team of 96 employees including 20 professional engineers and technical staff. The company is committed to worldwide selling of high-quality oil pumps and other equipment used by oilfields.

Core Certifications: We obtained the American Petroleum Institute (API) 11AX accreditation (Certificate No.: 11AX-0118) and also certified with ISO 14001 Environmental Management System, High-Tech Enterprise certification and Intellectual Property Management System.

Our products have been used extensively in several major domestic and international energy projects, which is why we enjoy a good reputation in the industry:
International Cooperation: We have long-term partnerships with internationally recognized oilfield service companies such as SLB (Schlumberger) and Weatherford, supplying them with customized rod pump solutions. Our products are also exported to the United States, Canada, Romania, India, and Indonesia.
Domestic Market: Among our clients are the main domestic energy companies such as CNPC, Sinopec, ZPEC, and CSSC. We provide our products and services to the oilfields in Liaohe, Daqing, Changqing, and Shengli.

Packaging Standards: For equipment packaging, we use export-grade, heavily reinforced wooden crates to keep the items safe and intact even after long-distance sea and land transport.
Lead Time: The regular time for making and delivering an order is 8–10 weeks.
Shipping Methods: In addition to sea shipping, we are capable of land and combined multimodal transport, covering all the main global ports.
Warranty Commitment: We give our products a quality warranty for a standard period (exact details are decided according to product type). Besides defects, our after-sales technical support can also be relied on for any needs.
Sample Service: If you need samples for testing and evaluation, we can send them to you (you need to pay for the shipping costs).