Oilfield Services Oilfield Services
Oilfield Services

The Oilfield Services of PJSC Ukrnafta (hereinafter – the OFS) was formed by merging the Company’s oil servicing subsidiaries into a single structural unit, namely Dolyna Cementing, Poltava Cementing, Hoholeve Central Operations Support Base, Boryslav Central Operations Support Base, ESP Repair Base, Poltava Paramilitary Unit for Blowout Prevention and Response, Engineering and Well Testing.

The OFS is one of the largest Ukrainian companies providing a full range of services for the oil and gas industry:

  • cementing
  • hydraulic fracturing
  • coiled tubing operations
  • operations support services
  • tubing production and repair
  • test and repair of electric submersible pumps
  • engineering and well testing
  • blowout response service

The OFS provides services not only to Ukrnafta but also has more than 60 external customers. We provide services and technological solutions for the duration of field development: ranging from drilling, reservoir assessment to well development and production enhancement.

Our network covers more than 30 facilities located in close proximity to Ukraine's largest oil and gas fields to provide efficient and timely provision of customer services.

The OFS’ driving force is a well-trained and highly experienced personnel and a strong logistical base. 

Pressure pumping сementing and acidizing services

The OFS offers the following pressure pumping, cementing and acidizing services:

  • casing cementing
  • setting of cement plugs
  • pressure testing of casing, drilling tools, manifolds, tubing, BOP equipment
  • borehole cleanout
  • acid stimulation operations
  • bottom hole zones treatment
  • special treatment with salt inhibitors, corrosion, bactericides, special paraffin solvents, etc.
  • wax prevention and removal
  • cleanout of sand plugs
  • isolation of formation water inflows
  • well killing procedures
  • transportation of cement
  • coiled tubing operations
  • well stimulation with compressor units, cryogenic nitrogen unit, liquid nitrogen
  • acid fracking
  • slurry design

Today, the OFS cementing facilities include 108 cementing pumping units, 2 coiled tubing units, 4 frac pump units, 4 compressors and 3 nitrogen units.

For the last 3 years, the OFS has performed 97 operations on casing cementing, set 270 cementing plugs, carried out 105 coiled tubing operations and 32 hydraulic fracturing operations.

Pressure pumping сementing and acidizing services Pressure pumping сementing and acidizing services Pressure pumping сementing and acidizing services Pressure pumping сementing and acidizing services Pressure pumping сementing and acidizing services Pressure pumping сementing and acidizing services
Hydraulic Fracturing

The OFS performs hydraulic fracturing (fracking) turnkey, namely:

  • selection of objects for fracking
  • optimal design of hydraulic fracturing using the latest specialized MFrac Suite 12 software by Baker Hughes a GE Company
  • engineering and scientific support for preparation of fracturing additives at the well:
    • water testing
    • preparation of dispersing medium
    • linear gel (homogeneous biodegradable system with qualitative structural-rheological, pseudoplastic, technological features and excellent inhibitory properties)
  • mini-hydraulic fracture tests and hydraulic fracturing in compliance with the design parameters, well testing etc.

The OFS team of PJSC Ukrnafta has an extensive experience in the above-mentioned operations. Since 1996, we have performed more than 400 hydraulic fracturing  operations with fracture being fixed in various subsurface properties of the Western and Eastern Oil and Gas Production Regions.

In September 2019, for the first time ever, the OFS successfully carried out a hydraulic fracturing of Eocene sediments of well 85 Strutyn of Dolyna NGVU with fracture being fixed using record-breaking 42 t of the propping agent.

Hydraulic Fracturing Hydraulic Fracturing Hydraulic Fracturing
Well Testing
  • well testing operations
  • advanced slickline operations
  • gas-condensate well test analysis
  •  PVT analysis for oil reservoirs
  • pressure transient analysis using industry standard software KAPPA NET SAPHIR NL
Well Testing Well Testing Well Testing Well Testing Well Testing
Production services

Production services produce:

  • tubing
  • sucker rods
  • equipment for oilfield arrangements
  • spare parts for drilling and oilfield equipment
  • metal structures
  • rope cargo slings and separate elements for it, lifting beams
  • tools and equipment for workover
  • rubber products (made from crude rubber, by vulcanizing in molds)
  • forgings up to 100 kg

Our bases also offer:

  • major and routine overhaul of electric motors, generators, power transformers of all types and modifications
  • repair tubing, drill pipe, heavy weight drill pipe, cross-over subs, etc.
  • repair of drilling and oilfield equipment of domestic and foreign origin
Production services Production services Production services Production services Production services Production services
Electric Submersible Pumps Repair

The OFS is now completing the construction of a modern workshop for repairing electric submersible pumps (ESP) in the town of Pryluky, where all types of ESP repairs will be carried out regardless of their manufacturers, namely:

Receipt control of new equipment and computerized inspection report on:

  • ESP sections
  • common sized submersible electric motors (SEM)
  • common sized seal sections
  • telemetry systems
  • electrical submersible cable (ESP cable)
  • cable extensions
  • check and drain valves

Repairs (maintenance, medium and major) of:

  • ESP sections
  • common sized SEMs
  • common sized seal sections
  • electrical submersible cable (ESP cable)
  • cable extensions
  • check and drain valves

Testing and after-repair computerized inspection report on:

  • ESP sections
  • common sized SEMs
  • common sized seal sections
  • telemetry systems
  • electrical submersible cable (ESP cable)
  • cable extensions
  • check and drain valves
Electric Submersible Pumps Repair Electric Submersible Pumps Repair Electric Submersible Pumps Repair
Blowout Response Service
  • preventive inspections of facilities for compliance with blowout response requirements
  • response to oil and gas blowouts
  • response to oil and gas showings and related complications
  • complex emergency repairs in gas explosive environment:
    • under-pressure running and pulling of pipes
    • replacement of wellhead valves without killing a well
    • leakage elimination in wellhead flanged connections
    • pulling out of hole pipes plugged with sands, hydrates, wax
  • inspection, repair and pressure test of BOP equipment
  • installation of BOP equipment  
  • tanks clean-out of bottom sediments
  • design and production of blowout prevention and response equipment, including:
    • spools
    • adaptors
    • tubing head adaptors
    • sealing parts (well head strippers, pumping rod sealers, rotating control devices)
Blowout Response Service Blowout Response Service Blowout Response Service Blowout Response Service

PJSC Ukrnafta Oilfield Services contact information:

04053, Kyiv, Nestorivskyi Lane, 3-5

Sales Manager

Ivan Liasota

Tel.: +38 050 617 73 34

E-mail:  Ivan.Liasota@ukrnafta.com