CS OILFIELD 2021

SPECIALTY OILFIELD CHEMICALS

QHSE Commitment CS OILFIELD offers high quality solutions in the optimum way by evaluating each operation individually with its own parameters. To provide that, we rely on our partnerships with the industry’s leading manufacturers, third party labs and researchers to support our technical team and in-house lab. The quality is supported by compliance with all relevant legislations, regulations and industry standards. Zero incident with the minimum environmental impact is always the main target to protect everyone who is a part of CS OILFIELD operations. Our management has a leadership role in implementing and sustain the relevant QHSE policies and standards.

PRODUCT GROUPS

WELLBORE Strengthening Enhanced Integrity Problems in wellbore stability occur for a variety of reasons and may result in hole caving, tight hole or hole erosion cause poor cement job, difficulties in running casing and lost circulation. Wellbore instability may have negative outcomes as pack-off caused by poor hole cleaning, sidetracks due to differential sticking and excessive non-productive time due to lack of performing special operations as logging operations. Wellbore stability has two main considerations. First, the mechanical aspects of stability which are the stresses and pressures acting on the bore hole and the ability of the hole to resist such stresses; second, instability resulting from physicochemical interactions between the drilling fluid and the shale. Instability may be caused by excessive stress alone, by physicochemical effects alone, or by a combination of both. The common fact about the shales, that they are the most challenging formation to be drilled. Their mechanically weak nature and high swelling capacity impact the pore pressure and shale mechanical stress. Proper mud weight may prevent wellbore enlargement or tight hole but should be supported by pore pressure transmission inhibiting agents. The pore-pressure is the driving factor of wellbore problems. The process is affected by both chemical and physical interaction between drilling fluid and clay. Mud pressure invasion elevates the clay swelling and pore pressure by reducing the effective stress of the formation. The key is to keep the interaction minimum by lowering the fluid loss and plugging the micropores. Particle size distribution is also essential to provide an ultra-low permeable mud-cake with the least drilling fluids invasion. CS OILFIELD suggests three different mechanisms to support wellbore by inhibiting pore pressure transmission: Ultra-low permeable mud cake, minimum drilling fluid invasion by plugging the micropores and wide range of particle size distribution to enhance the quality of the mechanisms. These three mechanisms create a either a high-quality wellbore shielding or stress-cage barrier to provide maximum hole strength.

WHOLE BLACK • Improves filter cake quality and compaction • Helps to keep reactive shales under control Multi-sized blend of • Assists in plugging the microfractures high-quality wellbore • Provides a wide particle size distribution strengthening materials • Enhances rheology control gilsonite, lignite and carbon • Compatible with water-based fluids and black in the fluid phase of glycol and specially designed environmentally safe. surfactant. • Chemically inert, easily mixed and no effect on SHIELD X rheology The blend of modified • Excellent sealing and bridging properties, cellulosic polymers and • Strengthens fractured and porous formations, surface activated organic • MWD and Mud Motor friendly, solids aids in forming a thin, • Compatible with water-based fluids and deformable shield. environmentally safe. SEAL GX • Protects mechanically weak shales and poorly Angular shaped, consolidated formations pressure-sensitive synthetic graphite with high resiliency. • Prevents differential sticking in highly permeable zones Controls lost circulation, • Has a broad particle size distribution provides solid lubrication • Compatible with WBM, OBM and SBM. and reduces torque/drag. • Provides high return permeability for reservoir zones • Environmentally friendly BRIDGE CX • Controls fluid loss and enhances bridging. High purity, acid soluble • Minimizes formation damage, sized calcium carbonates • Inert with minimum effect on fluid properties. used as bridging material. • Sized from 2 μ -2.500 μ Specially sized structure • Specially designed for reservoir drill-in fluids. limits the losses and improved bridging compared to conventional calcium carbonates.

CLAY Control Absolute Inhibition Shale stability is primarily affected by the swelling of clay minerals in the wellbore, and it is one of the main issues in drilling operations. The stability of clay-rich shales is affected by their complex physical and chemical interactions with drilling fluids. It is known that shale – fluid interactions can be manipulated to enhance cuttings and wellbore stabilization as well as improving hole-making ability in shale formations. The dispersions and swelling of clay can be effectively inhibited either by intercalating the interlayers of clay minerals with inhibiting agents or covering the shale formation with different molecular weight polymers and preventing the interaction of water with reactive shale formations. In the last years, several shale inhibitors have been developed in the form of polymeric inhibitors, ionic liquids, and surfactants to be used in water-based drilling fluid systems. CS OILFIELD made an extensive work for years to evaluate and find solutions to mitigate and control the interaction of drilling fluids and clay-rich formations while protecting the environment. Our clay control solutions have significant advances and show excellent results in problematic shale formations around the world. We offer specialty products to provide the most efficient clay control solutions.

POLYAMINE • Provides efficient shale inhibition. • Protects cutting integrity and limits cutting The use of inorganic salts as shale inhibition in well-known and mostly applied in the industry, yet elevation in the salinity of dispersion fluid may pose environmental concerns and increasing waste • Assists as anti-accretion and bit balling agent management costs. In addition to the role of being the primary • No effect on viscosity or filtration properties. inhibitor in salt-based polymer fluids, amine-based additives are • Environmentally accepted. essential for low-salinity polymer fluids to replace salts to provide the necessity of shale inhibition capability. Polyamines provide cutting integrity to prevent water uptake of clays and inhibit shales from hydrating. The mechanism works by changing the chemical behavior of the clays to less tendency to bond with water. POLYAMINE shale inhibitor reduce the interlayer space of hydrated clay to prevent swelling and hydrations. Their chemical structure reduces hydration repulsion, which lowers clays hydration tendency as per the clay structure. DRILL CAP X • Provides cuttings encapsulation and clay dispersion inhibition. Acrylamide copolymer with relatively lower molecular • Minimal viscosity contribution and enhances weight. Specially designed to filtration provide high encapsulation to eliminate shale dispersion • More efficient compared to conventional shale without causing excessive encapsulators due to its chemical structure. rheology. • Compatible with water-based mud systems Q-DRILL and environmentally accepted. Special blend of surface-active • Increases ROP, minimizes accretion and bit balling agents formulated to increase • Lowers coefficient of lubricity. the Rate of Penetration (ROP) • Lowers torque, drag and friction. by reducing the accretion on • Improves filter cake and reduces API FL. the bit.

FRICTION Control Efficient Lubrication The increase in the number of extended-reach, high-angle and deep-water complex wells brings the necessity of controlling the high friction values which is one of the major problems that need to be addressed. Lubricants are often added to drilling, completion and workover fluids to reduce the coefficient of friction between tubular equipment or tubular and wellbore wall. They are also protective of the bit bearing surfaces under high load conditions by their film-forming property. The selection of the lubricant for water-based drilling fluid, reservoir drilling fluid and clear brine completion fluids is primarily driven by their performance criteria and environmental requirements. The performance criteria are decrease in coefficient of friction and torque & drag, synergy with fluid types and other additives, less formation & environmental damage. The environmental criteria include toxicity, biodegradability and human health-related problems. The application of correct chemistry has the most significant impact on the performance of lubricants, environmental-related problems, and consequently on the success during operations. CS OILFIELD provides the highest performance and lowest environmental impact solutions for the exploration of oil and gas resources in onshore & offshore environments to improve operational excellence and protect the environment. Our solutions are tailored to be compatible with nearly all kinds of fluid chemistries under various hole conditions which are proven in different parts of the world without causing any damage to marine and terrestrial resources.

LUBE FCX LUB FCX is readily biodegradable and nontoxic with its hydrocarbon chain of natural oils & fats. It is developed to enhance drilling rates when drilling with water-based muds and reduces torque and drag in many cases between 30% and 50%. As a result of its composition, it eliminates bit balling related problems, and vastly reduces the risk of differential sticking. The use of this lubricant does not affect rheology, nor filtration behavior nor any other mud properties. In some cases, its addition may even improve the API and HPHT filtration properties. Extensive laboratory tests have shown that the addition of LUB FCX reduces the friction factor of water-based muds to values as low as those of oil or synthetic-based muds. These lab results were confirmed in many field tests, even the small additions of FCX (1% to 3% by volume) enabled to drill highly tortuous wells. LUB FCX is also effective in high-density formulations. An addition of 3%, results in a remarkably lower torque. At temperatures of up to 160°C, LUBE FCX remains effective and stable. LUBE FCX SALT LUBE FCX SALT has almost the same properties as LUB FCX, whereas it is readily dispersible in any solids-free drill-in fluid or brine. It forms milky dispersions in the brines. After initial mixing, the lubricant will not separate into an oily layer on top of the mud. If, however a brine solution with lubricant must be stored prior to its use, it is recommended to keep the entire lubricant-brine solution under gentle agitation. This new lubricant shows no “greasing” problems and also remains into solution without “phasing out” which is important when the lubricant-brines solution is in place downhole without circulation. LUBE FC SPOT LUBE FC SPOT is a specially designed composition of polyalphaolefin (PAO), emulsifiers, activators and initiators. It has the same friction factor reduction capability with Synthetic Based Mud Base Oil and contains no aromatic content. Provides no effect on rheological properties and fully effective in high weight mud systems. According to field results, it decreases the coefficient of friction by 79.6% in freshwater, 75.7% in Xanthan gum brine slurry and 57.3% in NaCl brine systems.

OBM / SBM Package CS MUL P CS MUL P is a primary emulsifier used in conjunction with viscosifiers and fluid loss control agents to formulate an oil-based or synthetic-based drilling fluid. Can be used as a one-drum product, without using other wetting agents or secondary emulsifiers. • Improved electrical stability of emulsions • Improved HTHP filtrate control • Improved wetting and control of problems due to water contamination • Stable up to 200°C temperature CS MUL S CS MUL S is a secondary invert emulsifier formulated to provide emulsification and oil wetting properties for oil-based and synthetic drilling fluids. It forms very strong emulsions with high voltage stability and strong wetting capability when formulating a drilling fluid. • Improves oil-wetting and prevents water-wet solids. • Helps maintain HTHP filtrate in a water-free condition. • Improves emulsion stability. • Improved thermal stability and contamination resistance of the drilling fluid systems. • Stable up to 200 C temperature RHEO LSR RHEO LSR is a high polymeric material developed as a rheology modifier which is used to raise low shear rheology without increasing the plastic viscosity of invert muds. • Increase low shear rheology when required. • Prevent barite sagging even at high temperature. • Especially useful in horizontal sections where sagging often causes drilling problems. • Also aid in tightening the invert emulsion. FR O CLAY FR O CLAY rheological additive is an easy to disperse, rapid yielding viscosifier for oil and synthetic based drilling fluids. It’s unique composition delivers a wet process gallant that requires less time and shear to build full rheology in drilling fluids, and that yields at even low field temperatures. • Enhances cutting carrying capacity and hole cleaning. • Improves emulsion stability. • Maintain good filter-cake quality and filtration characteristics.

DRILLING FLUID SYSTEMS

OVERVIEW BENEFITS Equivalent Circulation Density (ECD) management and • Enhanced ECD management mud losses to formation still remain as the major • Temperature independency challenge which may lead to additional direct and • Improved suspension capacity indirect cost to operators, especially in deep water • Minimizing barite sag potential drilling operations. Inability to control ECD due to fluctuating rheology profile resulted by temperature FEATURES change is the main reason of these losses during drilling, casing run and tripping. • Highly tolerant emulsifier package to various contaminants. CS FR X synthetic based fluid system provides a flat rheology profile by maintaining minimum change in • Highly effective Rheology Modifier at yield point, low shear rate values and gel strengths even very low concentrations as 1 ppb between the temperature range of 40 °F to 250 °F. Extensively engineered emulsifier package and the • Wide micron size range of weighting polymeric rheology modifier ease the control of ECD agent within the fracture window range by working synergically at all downhole conditions. PRODUCTS & FUNCTIONS FR MUL P : Primary Emulsifier FR MUL S : Secondary Emulsifier CS FR VIS : Polymeric Rheology Modifier FR MOD X : FR System Conditioner FR O-CLAY : Organophilic Clay FR THIN : FR System Thinner MICRON X : Micronized Barite



OVERVIEW BENEFITS Oil base drilling fluid systems still provide the best • Improved electrical stability even in performance with their excellent inhibition, filtration, and higher temperatures. lubricating properties where the environmental regulations allow. In the oil base drilling fluid’s aqueous • Excellent HTHP filtrate control. phase, calcium chloride brine is dispersed in hydrocarbon • Enhanced suspension capacity. base fluid with the help of emulsifiers which are the key • Minimum sag potential in horizontal components provide the phase stability of system. well sections. CS INVERT FX diesel oil based fluid system shows a high stability profile, perfect resistance to contaminants and FEATURES minimum HTHP filtrate loss by the help of its premium emulsifier package. Polymeric rheology modifier raises • Highly contamination tolerant emulsifer the low shear rate rheology without increasing the plastic Package viscosity which ease the control of ECD within the fracture window range. That feature makes the system also • Excellent Rheology Modification at even suitable for ERD well applications. low concentration of 1 ppb • Stable up to 200 C deg. PRODUCTS & FUNCTIONS CS MUL P : Primary Emulsifier CS MUL S : Secondary Emulsifier RHEO LSR : Polymeric Rheology Modifier FR O-CLAY : FR System Conditioner

OVERVIEW BENEFITS Shale stability is primarily affected by the swelling • Enhanced Shale Inhibition of clay minerals in the wellbore, and it is one of • Improved Encapsulation the major concerns in drilling operations. • Higher ROP, Lower dilution Mitigation and control of the interaction of • Low Toxicity drilling fluids with clay rich formations requires • Easy to mix in field conditions. extensive efforts to provide a problem free operation. FEATURES HI-PERFORMX water base fluid system shows • Primary and secondary inhibition mechanisms significant advantage and excellent results with working separately. the mechanisms of inhibition, encapsulation, • Superior encapsulation without creating excess anti-accretion and ROP enchancement while rheology drilling in highly reactive shale formations. While • Additional lubricity and temperature resistance inhibiting the swelling, the system also prevents the shale cutting dispersion, so as minimize the PRODUCTS & FUNCTIONS dilution. Additives of the system have no adverse effect to rheology and can be easily mixed in the CS POLYAMINE : Primary Shale Inhibition field even in low-shear conditions.HI-PERFORMX CS DRILL CAP X : Encapsulation, Anti-Dispersion low toxicity profile makes it a great candidate to CS Q DRILL : Anti Accretion, Rop Enhancement replace OBM Systems especially in offshore CS PAO MUL : Secondary Inhibiton, Lubricity environments.

OVERVIEW BENEFITS Most of the time protecting the pay zone is the • Protect pay zone. responsibility of the reservoir engineering team, however • Maximize production with higher returns. proactive actions made during drilling and considering • Minimize solids invasion to reservoir. the full life cycle of a well enhances the potential • Maintains low skin values. production outcomes. Reducing damage, or skin effect, in mechanically weak and structurally complex reservoir FEATURES geologies is crucial in maximizing production and enhancing the net value of an asset. • Improved hole cleaning with high LSRV values. CS RES NX Water Based Fluid System provides its • Superior well bore strength with non-damage mechanism by its highly biodegradable bio combination of Shield X and Ca-CO3 polymer viscosifer, enhanced starch-based product and • Compatible with various breakers innovative wellbore shielding additive which is specifically • Enhanced clay inhibition by additions of designed for highly depleted and mechanically weak CS POLYAMINE X. reservoirs. Well bore is extra supported with sized CaCO3 which CS OILFIELD manufactures. Non-damaging PRODUCTS & FUNCTIONS characteristics of the CS RES NX and wellbore-shielding technology is proven with several formation damage XAN BD : Viscosifier tests have been performed in various independent labs. FL NX : Fluid Loss Control Agent SHIELD X : Wellbore Shielding Additive, Flc CS CARB X : Sized Calcium Carbonate

OOUILRFIELD PCRHOEMDUICCATLIOS N PFALACNTOTRY

At First Sight As CS OILFIELD, we have implemented our chemical production facility in 2020. Our facility is a completely smart, remotely controllable production center equipped with the highest level of technology. By applying all stages of total quality management in our facility, starting from the control of raw materials, every stage of production is designed by our expert engineers. The production process guarantees that the product will meet all the technical needs of our customers until it reaches the packaging stage with automatic sampling and testing processes.

Smart Execution of Manufacturing We share our production process electronically with our international business partners, and in this way, we offer our local solutions to our customers at global standards. Our facility includes all occupational safety features required by the production of special drilling chemicals. Products for challenging drilling operations are produced day and night in our integrated facility and presented to the world markets.

cs-oilfield.com Office : Seba Office Boulevard D blok Ofis 36 Ayazağa Mah. Mimar Sinan Sokak No:21 Sarıyer / ISTANBUL / TURKEY Factory : Dağbeli Mahallesi Antalya Blv. No:96 Döşemealtı ANTALYA / TURKEY Phone : + 90 212 709 39 29 Fax : +90 212 709 39 30 Email : info@cs-oilfield.com