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Hydrofracturing and acid fracturing

Hydrofracturing  is an effective method of oil recovery improvement.

There are two main types of hydrofracturing: hydrofracturing with fixing of fractures (proppant hydrofracturing); hydrofracturing without fixing of fractures  (acid fracturing).

In carbonate reservoirs apply generally acid fracturing, as for terrigenous reservoirs - hydrofracturing with fixing of fractures .

Oil production stimulation

Oil production stimulation is the package of measures for reservoir stimulation considerably improving the efficiency of oil production.

The Krezol group proposes high-quality technological solutions and own-produced chemical reagents for oil production stimulation from productive reservoirs with low permeability, as well as from the reservoirs which changed the filtration properties during formation drilling and field operations on wells.

Well development 

Well development is the package of works on stimulation of fluid (gas) from reservoir into the well, providing its productivity according to local produced opportunities of reservoir or with achievement of necessary well injectivity.

The Krezol group proposes high-quality technological solutions and own-produced chemical reagents for development of wells and stimulation of reservoir fluid from the producing horizons on a surface for the purpose of achievement of wells rated capacity.

Well killing

Well killing is the package of works on well killing by pressure control backfilling with solution of rather high density.

The Krezol group proposes high-quality technological solutions and own-produced  reagents for well killing.

Chemicalization management system

Chemicalization management system is an integrated solution to the problems of combating complications at all stages of production, transportation and  oil treatment using reagents, technologies, scientific support, monitoring and maintenance service at contractor′s expence.

Main areas of activity in the implementation of chemicalization management system

  • Development of chemicals appropriate for any oil field with any kind of complications;

  • Production of reagents;

  • Logistics to the end user;

  • Injection in the oil field;

  • Monitoring and scientific support of projects;

  • Design, installation and maintenance of fixed and mobile dosing units.

The main stages of implementation of complete chemicalization

  • Onsite examination of existing and potential complications;

  • Laboratory selection of reagents and technologies. Testing for compatibility with other reagents;

  • Pilot testing;

  • Delivery of reagents to the end user;

  • Injection of reagents and maintenance of dosing units;

  • Monitoring of the systems of oil production, treatment and  transportation;

  • Correction measures aimed at increasing the effectiveness of the treatments produced;

  • Permanent reporting to the customer;

  • Increased responsibility and focus on the final technological effect (reduction of accidents, improvment in quality of oil treatment, equipment lifetime extension).

Water isolation and squeeze cementing

Water isolation and squeeze cementing is the package of works on shutdown of water intrusion ways into a well production facility and shutoff of  separate reservoir  and watered  intervals.

The Krezol group proposes high-quality technological solutions and own-produced reagents for water isolation and also lost circulation zones during squeeze cementing implementation by selective methods.

Production

Acid compositions 

  • Acid compositions for well treatment of injection well stock in carbonate reservoirs 

  • Mud-acid compositions for well treatment in terrigenous reservoirs

  • Self-diverting acid compositions for oil and gas well treatment in carbonate reservoirs

  • Dry acid compositions for oil and gas well treatment in carbonate reservoirs

Well killing fluids

Chemicals for production, treatment and transportation of oil

  • Integrated compositions for bottomhole treatment and highly sophisticated bottomhole treatment, water isolation, non-damaging well control

  • Solvents of  asphalt, resin, paraffin deposits for oil and gas well treatment

  • Asphalt, resin, paraffin deposits inhibitors  of detergent action

  • Scale inhibitors

  • Demulsifiers

  • Hydrogen sulphide and low-molecular-weight mercaptan scavengers

  • Oxygen scavengers

  • Clay inhibitor for drill mud

  • Lubricants for drill mud