Ultrafine Oilwell Cement for Lost Circulation & ZonalIsolationHSR500 / HSR700 / HSR1000 / HSR1340
Release time：2026-02-18
Ultrafine Oilwell Cement HSR Series | HPHT Lost Circulation Solution
Meta description: Ultrafine oilwell cement designed for HPHT and fractured formations. Compare D50/D90, BET, thickening time and strength for HSR500/700/1000/1340.
Why ultrafine cement in oil & gas
Ultrafine oilwell cement is designed for HPHT and fractured formations, providing stable sealing and consolidation under harsh downhole conditions. It is capable of sealing 0.1–0.5 mm cracks, with compressive strength ≥15 MPa at 60°C (application dependent).
Key capabilities (what operators search for)
Usable under temperature >200°C and pressure >20 MPa
Thickening time control (e.g., 110 min reference)
High sealing efficiency; suitable for lost circulation, zonal isolation, annular sealing and water shutoff
HSR model snapshot (reference data)
HSR500: D50 8.75 μm, D90 22.11 μm, BET 879 m²/kg, thickening 110 min
HSR1340: D50 4.43 μm, D90 9.61 μm, BET 2399 m²/kg
Final design should be confirmed with batch test report.
Typical applications
Technical cementing for oil/gas wells
Interlayer channeling control, water shutoff
Annular sealing, deep high-pressure anti-leak
Geothermal wells and gas storage sealing
FAQ
Q1: What crack size can this seal?
Reference capability: 0.1–0.5 mm cracks (design dependent).
Q2: Can it work in HPHT wells?
Yes, designed to work at >200°C and >20 MPa.
Send us BHCT/BHST, pressure, loss type, target thickening time. We can support slurry design and provide HSR series datasheet + batch report.https://www.kangjinggrouting.com/Product/3.html
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