Sealing Agent Nano-polyester
Product Description
SRD-65 sealing agent is a field proven additive that allows building a low invasion drilling fluid which improves wellbore circumferential stress, prevents hole collapse and effectively controls mud losses. SRD-65 is a multi-polymer composed of alkane sulfonate, alkyl ester, crosslinking agent. It forms nano-solid sealing material through special technology. The special functional groups on the molecular chain has strong adsorption ability, and strong adhesion properties. SRD-65 reduces pore-pressure transmission by sealing pore throats and micro-fractures due to reasonable size distribution of SRD-65 in drilling mud.
Technical Specification
| Items |
Specifications |
| Appearance |
White Emulsion |
| Increase ratio of AV, % |
≤10.0 |
| FLAPI, mL |
≤15.0 |
| Water permeability reduction rate, % |
≥35.0 |
| Relative expansion ratio, % |
≤60.0 |
| Particle size D50, μm |
≤1.0 |
Features
Form semipermeable membrane at the borehole interface and cutting surface, to maintain the stability of borehole and integrity of the cuttings.
Excellent performance of borehole stability, it can be applied to all kinds of strong water- sensitive and other complex formation.
Resist high temperature up to 200℃ and reduce HTHP filtration loss.
Compatible with other additives.
Recommend dosage 0.5 - 3% (v/v).
Low fluorescence, can be applied to exploration wells.
