GEOSYNTHESIS ENGINEERING

Development and service of drilling fluid

First experience of the use IEDM Witer II during drilling became successful. Accident-free and Proper penetration of pay zone allowed customer strongly increase production of hydrocarbons.

News about so significant success propagates fast. Another employer appealed to us with a request of utilization hydrocarbon systems in drilling.

System Witer II will be used during penetration of main productive reservoir within interval 5458-5620 m with a bottomhole temperature 138oC. Liner-filter will be set in this interval in a future.

Reservoirs, that are located above, are characterized with lower pressures, although have operation potential. Therefore, penetration of pay zone was performed with utilization of clayless biopolymer drilling fluid Biocar-MT.

Required volume of invert emulsion Witer II was provided for customer under tenancy by our organization and have delivered to the derrick fully prepared by specialized vehicle purposed for conveying liquids. Accumulation of the volume of the emulsion and its storage were carried out in isolated receiving receptacles with constant intensive mixing.

Transfer previous drilling mud to the system IEDM Witer II was made after casing Ø 177,8 running. For this operation high viscosity hydrophobic buffer was used.

PARAMETERS OF INVERT EMULSION WITER-II AT THE BEGINNING OF DRILLING:
  • Density – 1,11 g/сm3;
  • Funnel viscosity – 67 s;
  • Gel – 67/67 dPa;
  • PV – 30 cP;
  • YP – 129 dPa;
  • Filtration loss – 2,4 сm3/30 min;
  • ES – 687 V.