Catalogue
POLYOILBARM
Polyoilbarm is intended for well completion at abnormally high reservoir pressures (AHRP). This compound is an alternative solution of ultraheavy salt fluids w/o solid phase (zinc chloride, calcium and zince bromide, caesium formiate). Polyoilbarm is a suspension of micronized barite (< 5 μm) in a mineral oil; the density of Polyoilbarm may be controlled from1 735 to 2 500 kg/m3. Applications: drilling-in of productive reservoirs with AHRP; wellbore leakage killing; punching and killing at AHRP; packer fluid; buffer fluid.
Specifications of Polyoilbarm compounds of various densities
| Index | Solution’s process parameters | ||
| Before heating | After heating | Before heating | |
| Solution temperature, °Ñ | 25 | 25 | 25 |
| Density, g/cm3 | 1,735 | 1,735 | 2,480 |
| HC/W ratio | 90/10 | 90/10 | 100% HC |
| PV, mPa*s | 45 | 50 | 89 |
| Dynamic shear stress, pound/100 ft2 | 28 | 28 | 22 |
| Gel static shear stress 1 s/10 mins, pound/100 ft2 | 18/22 | 20/24 | 15/18 |
| API filtration, cm3 | 0,6 | 1,2 | 4,8 |
| Electric stability, V | 1527 | 1685 | 1320 |
| Sedimentation | - | - | - |
Main strengths:
Weak flow properties of the solution; high sedimentation stability, including at heating for 100°Ñ during 24 h; corrosion inactive; more complete hole cleaning; better ECD control; low coefficient of friction and torque on the rotor; environmentally friendly.Back