ChanPlug ® - Micro-Annulus Cement Squeeze Technology

Typical Properties and Field Applications

ChanPlug technology was commercialized in 2022 successfully and has been applied in various oil and gas fields in the world. It has been proved to be effective in the following conditions:

Temperature:
 BHST 39‑320°F (4‑160°C)
Density:
 8.3 ppg to 20.0 ppg (1.00 – 2.40 g/cm3)
Mix‑water:
 Fresh water
Free water:
 0 mL
API fluid loss:
 ≤50 mL
Treatment:
 Casing‑leaks, micro‑annulus, fractures and fissures, perforation, gravel packs, highly permeable matrix, liner top
Further information about field jobs is described in documented “Case History of ChanPlug Technology”.
Example of ChanPlug system design (at BHST 35°C& 70°C) and system properties are listed in the following table.

Item

35°C

70°C

Rheology

RT

62/34/24/13/8.5/5/1.5/1

68/35.5/24.5/13/7.5/4/0.5/0.5

35°C or 70°C

88.5/50/35/18.5/12/7/1.5/1

72/40/27/13.5/8/4.5/1/1

Fluid loss

24 mL

56 mL

Thickening time

30Bc @315min
40Bc @334min
70Bc @358min
100Bc @362min

30Bc @219min
40Bc @230min
70Bc @248min
100Bc @257min

Free fluid

0 mL

0 mL

UCA

672 psi/10h

550 psi/10h

1316 psi/24h

1986 psi/24h

Precautions and HSE Considerations

Microfine cement (KCM053), silica fume (KCM033), flow-off additive (KCM028) and stabilizer (KCM018A) play the most important role in ChanPlug treatment design using slurry squeeze technique. In addition, flow loss agent (KCM065L), accelerator (KCM042) and dispersant (KCM002S) are also used in ChanPlug systems.

The laboratory procedures, quality assurance program and guidelines for field mixing and handling of ChanPlug systems are described in the fluid manual.

Refer to the technical data sheet (TDS) and SDS of the respective product for the health, safety and environmental information of each product.