Brenntag CEE offers a full range of additives for drilling fluids and cement grouts which increase efficiency, lower costs and minimise the health and safety impact. We constantly develop our additives so that they are able to meet the most stringent requirements, including HTHP.
Our company is the largest distributor of additives for drilling fluids in Poland, from simple products to highly specialised ones. We also offer customised solutions and products, which includes designing and preparing packer fluids, acid-treatment (inhibited) mixtures and designing drilling fluids.
Our product groups include
Thickeners used in drilling can be organic or inorganic. These additives are used in order to ensure the desired rheological properties of the drilling fluid to keep the cuttings in suspension, similarly to other drilling fluid additives.
Organic thickeners are based on carbohydrates such as cellulose. The viscosity of the fluid can be adjusted. These additives can be anionic, non-ionic and cationic.
The choice of thickener is important – it has to be compatible with other additives in the drilling fluid. They are water-soluble biopolymers and are used in water-based drilling fluids. Inorganic thickeners can be added to the oil-based or water-based drilling fluids. Effective control of rheological parameters is the basic function of thickeners used in drilling. The main purpose of using thickeners, both natural and synthetic, is to guarantee proper viscosity and liquid limit of drilling fluids to make them perform their basic function, namely carrying out cuttings effectively.
Brenntag Polska offers a broad range of drilling fluid thickeners, meeting the API standards:
- Bentonite API
- CMC HV
- CMC LV
- PAC LV
- PAC R
- Xanthan gum
- TNO xanthan gum (increased thermal resistance)
- Liquid HEC (liquid hydroxyethyl cellulose)
- Brenntadrill 1020 (synthetic polymer, bentonite extender)
- Guar gum
Filtration is an important feature of each drilling fluid. This parameter is continuously monitored and controlled. Even when filtration control additives are not used, it is usually a conscious decision based on the evaluation of potential consequences, that include tightening of the drill string, falling of the well walls and loss of rheological parameters of the drilling fluid. High filtration results in a thick filter cake on the permeable formations in the well. An extremely thick filter cake on the well wall can cause significant resistance for the drill and stabilizers. This can eventually lead to tightening of the drill string, resulting in closing of some parts of the well on the drill string or stabilizers due to formation of such filter cake. The likelihood of the drill string tightening (similarly to the possibility of damaging the production formation) is the most common reason why additives reducing filtration of the drilling fluid or maintaining filtration at a relatively low level during most of the drilling operations are used. Filtration is controlled in order to reduce filtrate losses in permeable sections. Excessive filtration of the drilling fluid adversely affects the drilling process, as it can cause damage to the production zone and result in an unstable well wall. In addition, a filter cake that is too thick, forming a deposit on walls, leads to various drilling problems.
Brenntag CEE offers highly effective protective colloids, starch-base products (resistant to temperatures up to 150°C) and synthetic polymers (resistant to temperatures up to 210°C).
- CMC LV
- PAC LV
- Brenntaper 3100 (drilling starch)
- Brenntaper 3101 (drilling starch resistant to 150°C)
- D-3018 (synthetic polymer for filtration processing in HTHP conditions)
- CMS – carboxymethyl starch
Specific gravity of drilling fluids is a basic parameter ensuring effective control of hydrostatic pressure in a bore-hole. Correct balancing of the formation pressure by the fluid column weight ensures safe drilling operation. Our company offers non-flotated drilling barite meeting the API standard requirements as well as very high-quality and high-purity ground marble used in workover operations where the use of ultra-pure materials is absolutely necessary (a broad range of graining from 2 to 2000 microns).
Circulation losses (drilling fluid losses) are probably the most time-consuming and costly problems that are encountered during drilling. It is estimated, that they cost the drilling industry over a billion dollars a year in the form of downtime and other financial resources. Drilling fluid circulation losses are common in horizontal drilling in naturally permeable reservoirs. Many wells require drilling fluids, that are made heavier or high-weight brines. Horizontal wells drilled in highly extracted areas and in areas with high gas pressure gradient values (> 14 ppg) often pose economic problems, due to significant drilling fluid losses. They have to be taken into account when planning each well. The drilling fluid is a priority. Fluid losses are among the most serious drilling problems encountered during drilling work. They pose a threat to the well safety and considerably increase the costs related to the drilling fluid.
Brenntag CEE offers a number of products, both mineral and organic, for effective loss control.
- Brenntaseal ML10
- Brenntaseal ML12
- Brenntaseal ML20
- Brenntaseal ML40
- Brenntaseal ML70
In the oil industry, economic losses and environmental damage caused by corrosion are due to prolonged exposure to very corrosive conditions, to which metal equipment used in drilling is exposed. The most important tasks in the area of corrosion inhibition include ensuring reliable operation and long service life of the equipment, which translates into real economic benefits. More than one type of corrosion can be found on oilfields, including electrochemical corrosion (drilling fluids are most often aqueous salt solutions, which are highly conducive to electrochemical corrosion), corrosion caused by oxygen, dissolved hydrogen sulphide or dissolved carbon dioxide. Corrosion processes, pitting corrosion in particular, can lead to failures resulting from pipe damage, where deep pits occur. Severe problems can also be caused by intercrystalline corrosion resulting in a significant reduction in strength properties of metal elements, also carrying failures with it. High-quality corrosion inhibitors can considerably extend the life of drilling equipment and most of all prevent failures. Specially selected inhibitors form a durable protective layer preventing the formation of new pits and passivating the existing ones. Brenntag CEE offers a broad range of corrosion inhibitors commonly used in the drilling industry.
Lubricants are specially designed drilling fluid additives that increase lubrication in contact of the drill and the drill string with the drilled formation. They reduce the coefficient of friction of drilling fluids, resulting in minimised torque and drag.
Brenntag Polska offers lubricants designed for all well conditions:
- Brenntalube 5000
- Brenntalube 5010
Excessive content of solids in the drilling fluid or its contamination can lead to a considerable increase in viscosity, which adversely affects the drilling fluid parameters or, in extreme cases, can stop the drilling fluid flow. Dispersants are applied to deflocculate (reduce viscosity) the drilling fluid. Brenntag CEE offers lignosulphonate-based deflocculants and deflocculants based on highly effective synthetic acrylic polymers.
- Desco CF
- D-3020 (synthetic liquefier)
Many problems associated with the use of water-based drilling fluids in drilling operations and reconstruction works are due to absorption of water (from the drilling fluid) by clays. They can cause washing out of the well walls, increased drilling costs (e.g. costs associated with the control of cuttings, drilling time and dilution of the drilling fluid) and exfoliation of the clay formation during drilling. The presence of reactive clay deposits that soak up water and swell is one of the most important factors affecting clay swelling (falling of the walls, which causes sanding up problems). Hydration, swelling and dispersion of shale lead to the well wall stability loss, manifested by washing out, caverning or well tightening. Such a technical condition of a well can result in many drilling failures and requires fluids offering special inhibiting properties.
Brenntag CEE offers products used as swelling inhibitors, including anionic and cationic PHPA polymers. Additionally, we offer highly effective clay swelling inhibitors based on polyglycols (cloud point glycols) and polyamines. Brenntahib 2040 (anion PHPA polymer)
- Brenntahib 2056 (cation polymer)
- Brenntahib 2533 (liquid PHPA polymer)
- Brenntahib 2068 (drilling glycol)
- Brenntahib 2142 (polyamine)
Biocides are designed to destroy, deter, render harmless, prevent from acting or exert a controlling effect on any harmful organism by chemical or biological means.
A great variety of organic substances added to the drilling fluid are conducive to the multiplication of microorganisms causing fluid fermentation.
Brenntag CEE offers a wide selection of broad-spectrum biocides of recognised manufacturers (Dow Chemicals and Schülke&Mayr), including:
- Grotan OX - multifunction agent
- Grotan OK
- Grotan WS
- Aqucar DBNPA
- Aqucar GA (glutaraldehyde)
The presence of surfactants or other substances that may cause foaming in drilling fluids has an adverse effect on the fluid parameters (e.g. by decreasing its specific gravity) and leads to numerous drilling problems.
Brenntag CEE offers alcohol-based defoamers and silicon anti-foaming agents acting as both, foaming inhibitors and agents reducing the existing foam.
- Brenntaskim 7594
Brenntag CEE distributes a broad range of surfactants offered by leading European manufacturers. Our offer includes all types of detergents, including the ones used in various drilling applications.
- Brenntadrill 9000 (drilling surfactant)
The presence of hydrogen sulphide in the drilling fluid is mainly caused by its occurrence in the bed along with gas or oil. Apart from the fact, that it is toxic to human health, hydrogen sulphide is conducive to corrosion of the drill string and casing pipes. Dissolved oxygen present in the drilling fluid creates favourable conditions for the formation of corrosion centres.
Brenntag CEE offers hydrogen sulphide and oxygen scavengers:
- Zinc oxide
- Zinc carbonate
- Brenntadrill 7303 (hydrogen sulphide scavenger)
Modern hydraulic fracturing is a fully controlled process, that can consume up to 25% of the well drilling costs. Hydraulic fracturing involves injection of adjustable viscosity fluids containing activators, organic solvents, antioxidants, enzymes and polymers. Ceramic or metal materials are used as proppants. Thanks to the hydraulic fracturing technology, precise concentric fracture zones with the radius of up to 900m are created, in case of bituminous shale (up to 200m in case of sandstones). Brenntag CEE offers a range of products used in hydraulic fracturing, i.e. thickeners, activators, organic solvents, biocides, mineral oils and high-quality proppants (ceramic proppants) of Saint-Gobain, available in three categories:
- Guar gum
- Ammonium persulphate (breaker)
- Magnesium peroxide (breaker)
- Ceramic proppants
Brenntag, the world’s leading supplier of chemicals, offers a wide selection of chemical substances commonly used in drilling. We also prepare mixtures tailored to the customer’s needs. Among others, our products include the following:
- Citric acid
- Sodium carbonate
- Potassium carbonate
- Sodium hydrogen carbonate
- Caustic soda
- Potassium hydroxide
- Potassium chloride
- Sodium chloride
- Calcium chloride
- Monoethylene glycol, etc.
- Potassium acetate
- Packer liquids (depending on customers' requirements)
- Granulated bentonite (for hydroinsulation)
- Sodium acid pyrophosphate (SAPP)
- and many others