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  • Name:GWS-1 Delayed Expansion LCM
  • ID:cp530
  • AddTime:2019-06-24
  • Hits:538
Product Detail

Product Description

GWS-1 is a kind of gel polymer with strong water swelling capacity. GWS-1 particles give enough time to be continually injected into leakage zone to expand due to the feature of delaying expansion. In addition, GWS-1 has a good intensity, toughness and thermal stability in salty areas with high-temperature due to the introduction of chemical coupling agent and groups to resist heat and salt in molecular chain. The diameter of particles can be adjusted as necessary. GWS-1 can be used for blocking different fractures and cavity. The product has a good compatibility with all kinds of water-based drilling fluids, it can seal the leakage formation and improving anti-pressure capacity of formation. Dosage depends on different situations.

Technical Specification

Item

Specifications

Coarse

Middle

Fine

Appearance

Solid particle

Drying loss, %

≤15.0

Particle size, %

≥3.35 mm

≥90.0

-

-

1.00 - 3.35 mm

-

≥90.0

-

≤0.90 mm

-

-

≥90.0

Swelling ratio, times

≥ 3.0

≥ 3.0

-

Closed FL (30min), mL

-

-

≤35.0

 

Features

High strength after swelling, excellent sealing property.

Cure loss caused by fracture and cavity effectively.

Form sealing solid with high consolidation strength, high toughness, and long validity in the leakage formation.

Resist high temperature and high salinity contamination, can be applied to deep and ultra-deep wells.

Package and Storage

They shall be packaged in 25kg multi-wall paper sacks. They shall be stored in a shady, dry, and ventilated place.

 

Safety

They shall be avoided contact with eyes, skins and clothes, otherwise flush it with water. Handling methods and dangerous data shall be referred to MSDS.