Improving the efficiency of well drilling process in a reservoir is directly related to subsequent flow rates. Drilling deviated and horizontal wells often accompanied by an increase pressure losses due resistance caused small size annular space. An important role such conditions played quality borehole cleaning transport capacity fluid, which rheological parameters fluid. The main viscosifiers modern fluids are polymer reagents. They can be various origin structure, determines their...

Today, the issues related to solving problem of finding an effective distribution oil flows through system pipelines in order reduce total energy consumption are relevant. The solution this is connected with selection rational pumping modes for various technological sections using modern methods mathematical programming or new techniques improving and transport characteristics oil. Reducing during crude trunk can be achieved by methods. Numerous investigations direction mainly carried out...

Drilling muds play the essential role drilling process as they perform many functions, such removing of drill cuttings and controlling well pressure. Water-based muds, through use more environmentally friendly additives, can meet increased environmental requirements. Many researchers have studied effects different natural materials on mud to find effective materials. The popularity using waste is mainly due their cost favourable impact. Performed literature review showed that rheological...

Filtration index of the drilling fluid is an important parameter well drilling, especially at drilling-in reservoirs. Standard in study fluids static filtration index. At same time, it more feasible to determine dynamic index, if considering actual conditions well. Use polymer carbonate-weighted advisable oil and gas formations; but, also necessary take into account fractional composition weighting agent. Aim work influence weighting-bridging agent's on fluid's Taking main theories bridging...

This paper considers the issue of associated petroleum gas utilization during hydrocarbon production in remote fields. Due to depletion conventional oil and deposits around globe, shifts hard-to-recover resources, such as heavy high-viscosity that requires a greater amount energy be recovered. At same time, large quantities are extracted along with oil. The can utilized fuel for power generation. However, even application combined modes (combined heat cooling power) cannot guarantee full...

With the depletion of traditional energy resources, share heavy-oil production has been increasing recently. According to some estimates, their reserves account for 80% world’s oil resources. Costs extraction heavy and natural bitumen are 3–4 times higher than costs extracting light oil, which is due not only density viscosity indicators but also insufficient development equipment technologies extraction, transportation, processing such oils. Currently, a single pipeline system used pump...

Drilling fluids play an important role in the construction of oil and gas wells. Furthermore, drilling wells at offshore fields is even more complex task that requires application specialized muds, which are non-Newtonian fluids. With regard to fluid properties, it necessary manage equivalent circulation density because its high values can lead fracture formation, loss wellbore instability. Thus, rheology used mud has a significant impact on density. The aim present research develop...

This article discusses methods of enhanced power generation using a binary system with low-boiling fluid as an intermediate energy carrier. The consists micro-gas and steam units is intended for remote standalone supply. Trifluotrichloroethane was considered the working agent cycle. developed modeled by two parts in MATLAB Simulink Aspen HYSYS. model HYSYS calculates material balance system. investigates operation electronics quality generation. results simulation show that efficiency range...

This paper discusses problems associated with water-based drilling fluids used for formations abnormally high pressure. The available solutions are suitable a narrow range of applications, especially when weighted muds should be used. reviews the experience searching and developing new type mud based on saturated brines. With referenced papers as basis, authors developed compositions such brine-based muds. A distinctive feature considered is absence barite, which often weighting agent....

This study aims to develop a novel low-heat cement slurry using phase change microcapsule additives reduce the decomposition of hydrate-bearing sediments during cementing. Microcapsules were prepared by coating mixed alkanes with polymethyl methacrylate, and lipophilic-modified graphite was incorporated enhance thermal conductivity microcapsules. The effects microcapsules upon hydration heat, pore distribution, compressive strength slurry/stone studied through variety tests. results showed...

Lost circulation is considered a time-consuming, costly problem during the construction of oil and gas wells. There are several preventive techniques to mitigate this problem. Stress cage technology mechanical lost method, in which formation at wellbore wall strengthened stop creation induced fractures as one main causes circulation. In research, two-dimensional numerical model, considering elastic, poro-elastic, thermo-poro-elastic behavior rock, built investigate effectiveness stress...

Article presents investigations on the development of a drilling mud composition for directional wells in an oil field located Republic Tatarstan (Russia). Various rheological models fluid flow and their applicability muds are analyzed. Laboratory experiments to measure main parameters solution, such as plastic viscosity, dynamic shear stress, well indicators non-linearity consistency presented.
 On basis laboratory investigations, it was concluded that high molecular weight polymer...

Due to the inappropriate treatment of dairy wastewater, which can easily cause underground water pollution, there is an increasing need for a novel approach reuse wastewater. The technology microbially induced calcium carbonate precipitation with environmentally friendly characteristics and high efficiency has been widely used infrastructure remediation. However, lack in-depth research on application this under extreme environments, such as borehole oil wells temperature, pressure, alkaline,...

The paper considers variants of lightweight cement compositions with additives various substances, such as clay components, ash systems, silica additives, kerogen, gilsonite, microspheres, well the process slurry aeration. Recommendations on use in different conditions are presented. A decrease density solution is achieved not only due to low materials used, but also a result an increase water-cement ratio. In conditions, it possible ensure formation durable and impermeable stone well, which...

Construction of oil and gas wells at offshore fields often involves high formation pressure the presence swellable clay rocks in section. In addition, productivity preservation is also an important aspect. For this purpose, it necessary to reduce solids content drilling mud. The purpose work develop, improve, study compositions weighted muds with low solids, on basis organic salts alkali metals polymers for construction prone rock swelling and/or cavings, as well fluids drilling-in...

During well drilling in offshore conditions beyond the North of Arctic Circle, there are often problems associated with deviations rheological parameters mud as temperature changes. Mud upper part most cases is range up to 20 °C, whereas productive formation it 80 °C and more. For such conditions, necessary estimate influence on fluids, which done this paper. Compositions water-based hydrocarbon-based muds that may be used hydrocarbon fields were considered. The paper presents authors’...

Construction of offshore gas wells is characterized by increased requirements for both the technological process in general and parameters drilling fluids particular. Parameters properties used muds must meet a large number requirements. The main one preservation permeability reservoirs, addition to environmental concerns. At same time, pressures productive formation at fields are often high; anomaly coefficient 1.2 higher. use barite such conditions can lead contamination decrease future...

Improved drilling and reservoir penetration efficiency is directly related to the quality of mud used. The right choice type its components will preserve formation productivity, stability well walls reduce probability other complications. Oil gas operators use barite, less often siderite or hematite weighting agent as a component in composition muds for conditions increased pressure. But these additives productive leads reduction filtration characteristics reservoir, it almost impossible...

Filtration of the drilling mud is one it's most important parameters, especially when drilling-in producing formation. Decrease filtration characteristics allows reducing both solid and liquid phases's penetration zone into The study effect weighting-bridging agent's fractional composition on rate selecting optimal phase in mud. This paper presents studies static with addition various agents. obtained result indicates that an intensive decrease observed at calcium carbonate's introduction...

The article deals with ways of rock weakening for efficiency increase hard rocks drilling, also development drilling fluid composition is considered. Aim the project to develop which increases destruction. Authors conducted experimental investigation and their main structural rheological filter characteristics. Influence various solutions, including developed one, on destruction process evaluated introduced testing bench. Investigation results indicate that characteristics positively...

Mining and geological conditions for the development of new fields are becoming more difficult every year. Accordingly, requirements ensuring environmental technological safety drilling process important. To ensure such a process, it is necessary to use correctly selected fluids with proper characteristics: rheological parameters sufficient effective cleaning well bottom, density create back pressure, fluid loss high-quality filter cake. Modern dictate abandonment hydrocarbon-based...