Upstream

Our special solutions enhance the property value by faster delivery of the hydrocarbon fluid and/or by increasing ultimate economic recovery.
We are continuously updating and transforming our chemical inventory, thereby allowing our customers to better utilize their capital.
Our expert team will conduct complete investigation of the problem and provide best chemical solution using our state-of-the-art chemicals and additives which best fit our client needs.

Stimulation

Cost-effective solutions for fracturing, matrix acidizing and water control are our key focus. We add value to our clients’ operations through engaging with them in the challenges they confront and in increasing the production of oil and gas through well life by delivering well-engineered chemical compositions for various tipes of natural and induced damages.

To achieve mentioned goals, we will conduct different chemical testings to be sure that proposed chemical blends are best solution for our clients to restore or enhance well productivity in all types of formations and environments: cleaning of well equipement, perforations cleaning, various chemical treatments, matrix stimulation and fracturing (hydraulic and acid). Furthermore, we will provide solutions for cleaning up injection and disposal wells.

In case of cleaning and matrix stimulation (i.e. treatments that are applied below fracture pressure) we will use many different types of acid and solvent blends. For fracturing treatments (that are applied above formation pressure) three different tipes of fluid composition are applicable: gelled oil, water based fluids and gelled acid. In each case we will pay special attention to achieve compatibility of injected fluid with well equipment to avoid possible failures, such as metal corrosion. We are dedicated to continually developing fracturing fluid systems that reduce formation damage without compromising production and ensure fracturing fluids are specifically designed to be compatible with your reservoir for effective resource recovery.

Wellprex offers many different types of chemicals and additives for stimulation operations:

Fracturing additives and materials (for water, oil and acid based fluids):

• Gelling agents
• Crosslinkers
• Breakers
• Fluid-loss additives
• Biocides
• Non-emulsifiers
• Low and high pH buffers
• Gel and temperature stabilizers
• Surfactants
• Clay stabilizers
• Proppants

Acidizing additives:

• Corrosion inhibitors (for organic and inorganic acids)
  - Inhibitor for 15% HCl and mud acid for use up to 185°C
• Scale Inhibitors
• Scale Inhibitors
• Antifoaming agents
• Foaming agents
• Surfactants (anionic, cationic and nonionic)
• Clay stabilizers (organic and inorganic)
• Demulsifiers
• Emulsifiers
• Iron control additives
• Antisludge agents
• Acid gellants
• Hydrogen sulfide scavenger
• Buffering agents
• Organic acids (formic and acetic)
• Inorganic acids (hydrochloric and hydrofluoric acid)
• Organic dispersants
• Organic solvents
• Mutual solvents
• Diversion materials

Regarding fluid design, we offer our clients wide range of special solutions for various types of natural and induced damage removal and recovering of oil and gas well production:

1. For natural damages: fines migration, swelling clays, scales (calcium carbonate, gypsum, barium sulfate, iron scales, chloride scales, silica scales), organic deposits (such as paraffins, asphaltenes and tar), mixed organic/inorganic deposits, emulsions, etc.
2. For induced damages: plugging by entrained particles (such as solids or polymers in injected fluids), wettability changes (caused by injected fluids or oil-base drilling fluids), acid reactions, acid by-products, iron precipitation, iron-catalyzed sludges, bacteria, water blocks, incompatibility with drilling fluids, etc.

Cementing

Wellprex team offers a variety of chemical washes, spacers and cementing additives and chemicals.

• Accelerators
• Retarders
• Antifoaming agents / defoamers
• Foaming agents
• Antisettling agents
• Extenders
• Weighting agents
• Dispersants
• Fluid-loss control additives
• Lost circulation prevention agents
• Gas migration control additives
• Thermal stability enhancers

We also provide special / customized solutions for specific applications, like:

1. Cements for Enhanced Oil Recovery - carbon dioxide resistant cement blends
2. Special remedial loss cements – applicable in many cases because they can be completely dissolved with hydrochloric acid
3. Thixotropic cements
4. Styrene-Butadiene latex modified cement systems
5. Cement compositions for chemical waste disposal wells
6. Low density cement with compressive strenght over 2000psi within 24 hours
7. High density systems
8. High temperature systems for geothermal wells

Drilling

Wellprex offers its customers wide range of drilling mud additives applicable in various temperature, pressures and formation conditions.

• Viscosifiers / thickeners
• Emulsifiers
• Weighting agents
• Wetting agents
• Lubricants
• Oxygen and hydrogen sulphide scavengers
• Defoamers and antifoaming products for waterbased and oil based mud systems
• Asphaltene and paraffine disolver/inhibitor
• Clay swelling inhibitors
• Shale inhibitors
• Corrosion inhibitors
• Biocides
• Surfactants
• Fluid loss control additives

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Midstream

Pipelines are the most economical means of large scale overland transportation for crude oil, natural gas, and their products. They are superior to rail and truck transportation, given large quantities of hydrocarbons to be moved on a regular basis.

Because of large installation costs it is mandatory to protect them from deteriorating influence of environment i.e. corrosion, and prolong their useful life as much as possible.

Corrosion is the deterioration of a material, usually a metal, because of a reaction with its environment and it can be controlled in a several ways. One of them is application of special materials – coatings, which will keep moisture away from the steel surface and act as an electrolyte barrier. Beside corrosion protection, coatings also have some other beneficial effects, like friction-reduction and abrasion resistance. Well-designed coating is cost beneficial in terms of electric energy savings because it significantly reduces cathodic protection current density requirements, necessary to protect the pipe.

Production chemicals

Wellprex offers various types of production chemicals, like flow assurance additives and chemicals that will extend lifetime of pipelines.

1. Hydrate control additives
2. Paraffin and asphaltene solvents, inhibitors and dispersants
3. Demulsifiers
4. Corrosion inhibitors
5. Scale inhibitors
6. Biocides
7. Hydrogen sulphide scavengers
8. Foaming agents
9. Desiccants

Coating materials

Wellprex offers various types of production chemicals, like flow assurance additives and chemicals that will extend lifetime of pipelines.

1. Asphalt materials
2. Coal tar enamels
3. Fusion-bonded epoxy (FBE)
4. Polyethylene (PE) - cigarette wrap
5. Extruded thermoplastic polyethylene (PE) and polypropylene (PP)
6. Elastomeric coatings: polychloroprene and ethylene propylene diamine (EPDM)
7. Thermal insulation coatings
8. Field Joint Protection
a) Cold PVC or PE Tape coatings
b) Liquid coatings (coal tar polyurethane, urethane, epoxy)
c) Heat Shrink Sleeves

Asphalt and coal tar enamel

Asphalt, bitumen, and coal tar enamel (CTE) coatings are flood coatings applied as a molten material, most often in 5–6 mm thick layer.
Adhesion of these materials to steel is very poor, so pipe surface must be adequately prepared, i.e. roughened, during the cleaning process.
To secure greater cohesion, these materials are reinforced with a single or double layer of fiberglass matting introduced into the center of the coating. Asphalt enamels will tolerate 65–75°C and CTE 70–80°C. Some special-order enamels tolerate higher temperatures.
These materials can be over-coated with a concrete weight coating to increase stability and achieve mechanical protection.

Fusion-bonded epoxy (FBE)

FBE is one-part, heat-curable, thermosetting epoxy resin powder. The application of heat causes this material to melt and adhere to a metal substrate. The resulting coating contains no trapped solvents, exhibits excellent adhesion qualities, and provides a tough, smooth finish that is resistant to abrasion and chemicals. It can be used in form of powder mixtures containing pigments, plasticizers, anti-foaming agents, epoxy resins, curing agents, etc.
FBE can be used as single layer, dual layer, or as primary coating for three-layer polyolefin corrosion coatings. It is also very beneficial when used as lining material - provides reduced friction compared to uncoated or concrete-lined pipe (more efficient flow, reduced energy costs, and lower installed pump or compressor investment); saltwater, carbon dioxide, and caustic resistant.

Polyethylene coatings

Polyethylene coatings usually require application of an epoxy primer to the pipe, in form of very thin film, usually 75 microns thick. Primer is followed by an amorphous polyethylene-based adhesive, over which one or two layers of polyethylene sheet are applied as a cigarette wrap. This coating system is called a triple coating.
PE has a high electrical resistance, very low moisture uptake, and a long life expectancy. The upper temperature tolerance of polyethylene wrap is about 65°C. Polyethylene coatings may be covered with a concrete weight coating, usually combined with antislip bands to reduce the risk of slippage between the concrete and the coating.
Medium-density polyethylene (MDPE) as a wrap coating is a moderately thick coating, typically 3–4 mm.
High-density polyethylene (HDPE) has higher mechanical strength and is applied as a thinner coating of 1.5–2.5 mm.

Thermoplastic extrusion coatings

Thermoplastic extrusion coatings are polyethylene (PE) or polypropylene (PP). Polyethylene coating thickness depends on density and ranges from 1.5 to 4 mm.
Coating process begins with application of primer epoxy coating in thickness of 75 microns, applied by spraying or fusion-bonded onto a heated pipe. After that, adhesive as second layer is extruded over the primer, followed by the molten thermoplastic sheath.
A polyethylene coating can tolerate 65°C while polypropylene coatings tolerate up to 105°C. These coatings may be over-coated with a concrete weight coating, also combined with antislip bands to reduce risk of slippage of the concrete cover over the anticorrosion coating.

Elastomeric coatings

Within elastomeric group of materials, polychloroprene is mostly used polimer.
Because of its resilience to impact it is very sutable for covering risers in thickness of 6–12 mm. It is also used for high-temperature pipelines in which case coatings are 3–5 mm thick.
Polychloroprene in form of sheets (neoprene or EPDM) is glued onto a cleaned (and for EPDM, primer coated) pipe, and the assembly is then autoclaved to vulcanize the elastomeric coating.
Neoprene is suitable for temperatures up to 105°C, and EPDM can be formulated for service up to 120°C.

Thermal insulation coatings

When high-temperature, high-pressure fluids are transported by pipelines in cold water there is always a risk of wax deposition and hydrate formation. To avoid possible issues like flow restriction of hydrocarbons, it necessary to provide a thermal insulation coating on the pipeline to minimize heat exchange between the pipeline and water.
A range of foams materials can be used for this purpose. In most cases polyurethane and polypropylene foams are applied over an FBE coating either as a direct addition to the rotating pipe or as a helical wrap of preformed blocks that are locked in place by an outer wrap.

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Downstream

Conversion of crude oil to final products, like fuels, lubricants, process oils, waxes, solvents, bitumen, coke and other, requires very complex, multi-step refinery processing of raw materials in different downstream units.

Wellprex offers wide range of special chemicals and additives for refinery and petrochemical processes that increases production plant's profitability by: increasing feedstock flexibility, maximizing capacity utilization, increasing process yield and extending plant running cycles. Our special solutions will contribute to energy savings, maintenance costs cut and reducing plant total operating costs.

In close colaboration with our customers and chemical suppliers, we are constantly seeking for new, better and innovative production solutions, for optimizing refinery and petrochemical processes.

Our chemicals are applied in various precesses, like: crude oil distillations, vacuum units, visbreakers, hydrotreaters, hydrocrackers, FCC units, reformers, sour water strippers, amine units and coking units.

Some products from our process chemicals portfolio are:

• Corrosion inhibitors
• Demulsifiers
• Low melting point neutralizer
• Salt Dispersants
• FeS Dispersant
• Metal scavenger
• Metal passivator
• Triazine cracking catalyzer
• Fouling control agents
• Hydrogen sulfide scavengers
• Anticoking
• Polymer dispersant
• Antifoaming
• Oxygen scavenger
• Antiscale additives
• Sediment scavengers

We offer our customers fuel additives as well. Some of them are:

• Cold-flow additives
• Fuel lubricity improvers
• Cetane improvers
• Fuel dehazers
• Fuel biocides
• Conductivity improvers
• Heavy fuel flow improvers
• Heavy fuel oil combustion additives
• Energy additives
• Anti static agents for safe fuel's operation

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Competence and innovation

Wellprex team offers a wide range of up-to-date chemical products and engineering solutions. Our team of engineers and technitians works in close colaboration with our clients to deliver best possible solution in terms of financial investment and production increasement within Oil & Gas industry.

All our chemichals, additives and fluid compositions are tested by our specialists before on-site application. Testing and fluid analyses are conducted in chemical laboratory, under simulated application conditions. Laboratory is specialized for analytical, synthetic and physical chemistry, as well as surface science.

By focusing on controlled reactions and the development of new chemicals and additives for various applications, our laboratory specialists are aiming to understand and exploit the chemical means of measuring, optimizing, and controlling upstream, midstream and downstream processes. This allows us to develop and manufacture products that help our customers produce hydrocarbons more effectively.

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Sustainability

Our chemicals management, field support and production services consistently provides clients the highest level of service possible while reducing financial and operational risk to our customers throughout Oil & Gas industry.

We are dedicated to our partners and consistently seek ways to improve and to provide our clients faster return on their investment.

We draw our success from the expertise we have acquired through continuous international and domestic experience, verification and improvement in all aspects of engineering, dynamic solution making, execution and quality control.

Mission Statement

Wellprex is dedicated to building long-term relationships with our customers and associates and a commitment through our various services to providing consistent, reliable, high quality and cost-effective solutions for meeting unique customer needs and service satisfaction. Our mission is to continually build our skills and knowledge to meet the growing and diverse needs of Oil & Gas industry. We will sustain our reputation as a reliable, customer-oriented, dynamic player in the market and achieve profitable growth, operational and organizational excellence, without compromising from our values and business ethics.

Our values are loyalty, honesty, integrity, reliability, transparency and mutual respect.

Vision Statement

The Vision of Wellprex company is to be an effective, globally recognized, leading supplier of chemical and technical solutions within Oil & Gas industry. We will re-define the standards of ‘customer service’ by exceeding customer expectations, be admired for our business values and ethics and keep our name synonymous with reliability, customer satisfaction and innovation.

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Terms of use

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, to the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user's responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

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