A downhole circulating valve that switches between normal and external circulation through a sequence of rubber and steel balls. The design allows repeated circulation changes without pulling the string.
| Parameter | PTF121 | PTF165 | PTF203 |
|---|---|---|---|
| Tool OD | 4¾"（121mm） | 6½"（165mm） | 8"（203mm） |
| Tool ID | 1¼"（31.75mm） | 2"（50mm） | 2.36"（60mm） |
| Tool length (mm) | 1100 | 1200 | 1300 |
| Maximum tensile load (kN) | 2200 | 5500 | 7920 |
| Maximum flow rate (L/s) | 23 | 47 | 65 |
| Minimum flow rate (L/s) | 11 | 23 | 35 |
| Minimum torque capacity (kN·m) | 40 | 68 | 150 |
| Flow area before ball drop (mm²) | 1256 | 1750 | 3316.6 |
| External-circulation flow area (mm²) | 615.4 | 780 | 1775.9 |
| Normal-circulation flow area (mm²) | 632.5 | 1260 | 1358.3 |
| Temperature rating (°C) | 150 | 150 | 150 |
| Maximum differential pressure (MPa) | 35 | 35 | 35 |
| Ball diameter (mm) | 36、38、40 | 55、57.5、60 | 62、63、65 |
| Pre-activation pressure drop, water (MPa) | 0.4（18L/s） | 0.6（28L/s） | 0.7（63 L/s） |
Used for lost-circulation response, workover, completion, horizontal drilling, acidizing, coring and underbalanced drilling.
YUXIN combines product engineering, machining, assembly, inspection and export coordination in Dongying, Shandong.
Send the existing model or drawing, connection dimensions, operating pressure and temperature, well conditions, quantity and destination.
Yes. YUXIN can review drawings and samples for material, tolerance, machining, inspection and batch-production feasibility.
Material and treatment options are selected around pressure, load, corrosion, wear, temperature and sour-service requirements.
Inspection planning can include dimensional checks, material documentation, assembly review and product-specific pressure or functional testing.
Yes. Batch supply, export packing and order documentation can be organized for distributors, service companies and project procurement.
Website data is for preliminary selection. Final compatibility is confirmed against the approved drawing, specification and purchase requirements.
A planned release connection for sand-control service strings. Pin-release and back-off configurations provide a controlled separation point if…
View product
A bow-spring centralizer range including one-piece seamless, welded integral and assembled single- or double-bow configurations. Powder-coated options support…
View product
A hydraulically set water-injection packer with ratchet locking and bidirectional slips. It supports injection below the tool and…
View productSend your drawing, model, quantity and operating requirements for a focused response.
Share the product, model, quantity and operating conditions. Our engineering and sales team will review the requirement together.
