UTstar-Ⅰ is a cross-linked carboxymethyl starch. As a highly efficient fluid loss additive with salt and calcium resistance, it is used in petroleum drilling fluids, completion fluids, and workover fluids.
By modifying the molecular structure of starch, when used in combination with xanthan gum, drilling fluid systems treated with UTstar-Ⅰexhibit excellent low-shear-rate viscosity. This unique polymer combination works synergistically to enhance the static suspension capacity of the drilling fluid, while also delivering favorable pseudoplastic fluid behavior during circulation.
When compounded with suitable bridging agents or weighting particles, UTstar-Ⅰ reduces fluid loss while minimizing formation damage. Therefore, drilling fluids containing UTstar-Ⅰ can be used for drilling into oil-bearing formations.
UTstar-Ⅰ is non-toxic and environmentally friendly, posing no ecological concerns.
UTstar-Ⅰ with the following specifications:
Item | Specification | |
Appearance | White to light yellow powder | |
Moisture Content, % | 12 max. | |
Particle size, % on top of 40 mesh screen | 3 max. | |
API Fluid Loss, ml | Cool the fluid system from 120F (49℃) to room temp., then test | 10 max. |
After hot rolling at 190℉(88℃) for 16 hours, cool to room temp., then test | 10 max. | |
LSRV, cps Tested by Brookfield LVDV II+ @0.0636 sec-1 & 120℉ (49℃) | Test the initial fluid system | 30000 min. |
Test the fluid system after hot rolling at 190℉ (88℃) for 16 hours | 45000 min. | |
