Well Acidizing Package For Oil & Gas Production Wells FLUXOCORE® 210

Technical Requirements TU 2122-075-53501222-2009

Purpose of Use

HCl-based acidizing compositions of FLUXOCORE® 210 brand are available in the following grades: grade О, grade R and grade C. FLUXOCORE® 210 grade О and FLUXOCORE® 210 grade R res used for the  stimulation of  oil & gas production wells with carbonate reservoirs and clayey terrigenous reservoirs with low permeability as well as for acidizing with the large amounts of acidic composition.

FLUXOCORE® 210 grade C is used as a basic composition for self-diverting acidic composition with gelling agent SURFOGEL® grade A.

Acidizing packages of FLUXOCORE® 210 type are HCl-based compositions with a special complex of surfactants, highly effective additives and inhibitors.

Application Area of FLUXOCORE® 210 grade О and FLUXOCORE® 210 grade R 

  •  Fresh well completion after drilling operations in carbonate and sandstone reservoirs; switching into other production horizons and well development after conservation and temporary nonoperation.
  • Acidic fracturing with flow-diverting emulsion containing emulsifier EKS-EM / EMITRIT®.
  • Enhancing oil and gas recovery in production wells with water cut up to 60%, which have reduced productivity due to precipitation of non-organic type and due to oil-in-water emulsion forming.

Acidizing compound FLUXOCORE® 210 grade O and grade R can be used for highly drowned oil and gas production wells (watering level higher than 70%) after temporary blockage of high-permeability zones via prior injection of hydrocarbon emulsions with emulsifiers EKS-EM (for formation temperatures under 70°C)/ EMITRIT®(for formation temperatures under 70°C).

In case the level of watecut is 80-90% the blockage of water influx into the well can be performed with the sediment forming composition EMCO / TAMOLEX®. After water influx blockage well acidizing with  FLUXOCORE® 210 grade O  and grade R compounds is performed.

Propertiesof FLUXOCORE® 210 grade О and FLUXOCORE® 210 grade R 

Grade FLUXOCORE® 210  grade O FLUXOCORE® 210 grade R

Appearance

Transparent liquid, varying  from colourless to brown

Mass concentration of HCl acid, %, within the range of

18-22

10.5-14.5

Specific gravity at 20°C, g/cm3, within the range of

1.09-1.11

1.04-1.08

St3 steel corrosion rate at 20 °C, g/m2*h, not more than

0.20

0.20

Customer Benefits of FLUXOCORE® 210 grade О and FLUXOCORE® 210 grade R 

  • Effective prevention of forming trice oil-and-acid emulsions with high-viscosity;
  • Stabilizing of ferrous ions in dissolved state on dissolving iron-bearing rocks and precipitates;
  • High permeability in rock porous area of the reservoir due to low oil-water interfacial tension, high surface activity;
  • High dissolving power for the salts; 
  • High dispersive power for asphalt paraffin and resin  deposits;
  • Low reaction speed for carbonates which provides deep  penetration into the reservoir;
  • Low corrosion activity;
  • High dispersive power for clays.

Process Technique of FLUXOCORE® 210 grade О and FLUXOCORE® 210 grade R 

Acidizing composition FLUXOCORE® 210 grade O and grade C are  supplied in the concentrated form. The working solutions are to be prepared at site right before the starting of operation. The usual dilution rate is 1:1. The concentrates are diluted with fresh water.

Acidizing composition FLUXOCORE® 210 grade R is ready to use product.

To select the optimal design of application, i.e. consumption of acidizing compound, technique of application, it is recommended to contact the specialists of Service & Sales Department of Polyex company.

Complex acidizing package FLUXOCORE® 210 is certified for the application in oil-and-gas field.

 

SELF-DIVERTING ACIDIC COMPOSITION

Purpose of Use FLUXOCORE® 210 grade C

HCl-based acidizing composition  FLUXOCORE® 210 grade C is used as a basic composition for self-diverting acidic composition with gelling agent SURFOGEL® grade A.

Application Area of FLUXOCORE® 210 grade C

  • Acidic stimulation of production wells in carbonate  fractured and porous fractured reservoirs with high heterogeneity of layers.
  • Well acidizing with the large amounts of acidic composition.

Properties FLUXOCORE® 210 grade C 

Grade FLUXOCORE® 210  grade C

Appearance

Transparent liquid, varying  from colourless to light yellow

Mass concentration of HCl acid, %, in the range of

18-22

Specific gravity at 20°C, g/cm3, in the range of

1.09

St3 steel corrosion rate at 20°C, g/m2*h, not more than

0.20

Customer Benefits of application of FLUXOCORE® 210 grade C with gelling agent SURFOGEL® grade A

  • Self-deviating acidic compound does not cause formation damage with colmatationg comparing with visco-elastic diverting fluids on polymer base.
  • Possibility of creating wide network of wormholes in the matrix not only due to the heterogeneity of the reservoir but also due to redirecting the vector of effect on the rock by increasing the resistance of the gel.
  • Enhancing the efficiency of usage of hydrochloric acid for the acid is not spent on cavity creation.
  • No need in keeping rapid speed of injection of self-deviating acidic compound, and thus no need in expensive specialized equipment.
  • It is possible to use self-deviating acidic compound when the coiltubing technologies are used. The viscosity of acidic compound FLUXOCORE® 210 grade C with diverting agent SURFOGEL® grade A in its original state is about 20-30 mPa·s at the temperature of 20°C.
  • The possibility of regulating the ultimate viscosity of self-diverting acidic compsition containing diverting agent SURFOGEL® grade A by changing its concentration depending on the geological conditions and objectives.

Process Technique of FLUXOCORE® 210 grade C

Well treatment technology implying gelling agent    SURFOGEL® grade A supposes combined application of self-diverting acidic composition and FLUXOCORE® 210 grade C.
 To select the optimal design of application of self-diverting acidic composition it is recommended to contact the specialists of Sales and Service Department of Polyex company


Return to the list