Simulation of electrical sounding of the wellbore zone in the process of drilling oil and gas wells

Yuriy I. Steblev, Sergey V. Susarev, Alena Yu. Lapshina, Tat'yana Yu. Popova

One of the topical issues of drilling directional and horizontal wells with the use of downhole telemetry systems with an electromagnetic communication channel is the use of an electrical delimiter. It is part of the transmission system as a constructive basis for conducting electric and electromagnetic well logging while drilling. To solve this problem, it is necessary to evaluate the radial range of electrical probing near the well zone in order to determine the informativeness of the received data. A qualitative analysis of the structure of the probing electric field of the circuit and the calculation model of the logging is performed.

electrical and electromagnetic logging bottom hol

Geomechanical modelling for analysis of directional drilling techniques in the course of construction of underwater passages

Dinar R. Vafin, Alexey N. Sapsay, Yuriy V. Lisin, Rim A. Kapaev, Dmitry A. Shatalov

The paper presents engineering solutions utilized in directional drilling as well as the impact they have on construction of underwater passages. This is exemplified by an accident development scenario of passing through gravel and cobble soils. Following the model of stress-strain state of soils composing the wellbore and based on fluid dynamics model pertaining to drillingmud filtration, potentially hazardous process failures have been analyzed.

submerged crossing directional drilling wellbore collapse drill fl mainline pipeline geomechanical model

Efficiency of reamers in the course of underwater passage construction by directional drilling

Yuri V. Lisin, Aleksey N. Sapsay, Zarif Z. Sharafutdinov

This paper addresses the issue of selecting a rock cutting tool to ream a pilot bore of an underwater passage as applicable to soil physics and mechanics and reaming techniques. Engineering challenges arising from the use of various cutting tools for reaming are also highlighted.

rock cutting tools drilling directional drilling crossing construction

Research of drilling chemicals influence on the rubber of elastomer bottomhole motor under different temperature conditions

Anton V. Epikhin, Viktor P. Shesterov, Maksim I. Gubarev

The study is devoted to the influence of drilling chemicals on characteristics of rubber samples IRP-1226, which are considered to be basic materials for the production of elastomers of a bottomhole motor. The results of the influence of four chemical reagents on the parameters of rubber samples IRP-1226 at different temperatures are introduced in the article. The synergistic effect of drilling chemicals and drill mud temperature on the elastomer of a bottomhole motor was confirmed. The description of the process, occurring in the elastomer, using various drilling chemicals, is presented. Application of the results allows to develop the methodology for improving the service life of elastomers of bottomhole motors.

drilling bottomhole motor drill mud elastomer clay inhibitor biocide

Evaluation of permeability grouting stone, formed from the lightweight cement

Alexander V. Pakharev, Igor B. Bondarchuk

Construction volume under abnormally low reservoir pressures conditions and drilling of mud losses is the reason for the necessity of using the lightweight cement. The article is devoted to the vapor permeability of cement stone.

permeability cement hollow glass microspheres lightweight cement slurries the permeability of cement stone

Research of the influence of clays inhibitors on the rubber elastomer screw downhole motor

Anton V. Epikhin, Konstantin M. Minaev, Artem V. Kovalev, Viktor V. Urnish

The scientific work is devoted to the influence of clay inhibitors on the geometric parameters of the rubber samples IRP-1226, which is one of the basic materials for the production of elastomers the screw downhole motors. The results of the effect of the four types of inhibitors used as a reagent for drilling fluids to increase the stability of clay rocks to the parameters of the rubber samples IRP-1226. It proved the effect of clay inhibitors and their concentration on the elastomer of screw downhole motors. A description of the processes occurring in the elastomer in the presence of various chemicals. Characterized by the possible impact of these processes on the technical characteristics of the engine. Application of the results will allow to develop a technique to improve the resource elastomers screw downhole motors.

drilling a screw downhole motor drilling fluid elastomer clay inhibitor PDM

Assessing the performance and efficiency of bottom hole hydro-mechanical compensator pressure fluctuations of the drilling mud on a laboratory bench

Timur N. Minnivaleev

Circulation of drilling mud is provide by piston mud pumps, which are sources of non-uniform motion of fluid in the drill string. Oscillations of flow rate and pressure of washing liquid leads to increase agility drill bit, premature wear and malfunction of the bit; the leakage of the reservoir, and unstable operation of and failure of downhole motors, reducing component life of the pump; the discharge line is under high pressure because of the significant size fluctuations, leading to unforeseen negative consequences. The article presents the developed hydromechanical downhole compensator pressure fluctuations of the washing fluid that is installed in the bottomhole Assembly, describes the laboratory stand for testing and the results of its testing.

well mud pump drilling fluid the pressure fluctuations downhole hydraulic-mechanical compensa

Research of diesel influence on the rubber elastomer screw downhole motor within the temperature range 25-90

Anton V. Epikhin, Vasiliy V. Melnikov, Alexander A. Ber, Konstantin M. Minaev

The scientific work is devoted to the influence of diesel fuel on the geometric parameters of the rubber samples IRP-1226, which is one of the basic materials for the production of elastomers, screw downhole motors. We consider the results of studies for the temperature of the medium range 25-90C.

Drilling a screw downhole motor drilling fluid elastomer diesel PDM

Evaluation of the drilling fluids influence on cavernosity of a wellbore and its productive characteristics

Gerasim S. Li, Maria V. Koryakovceva, Andrei I. Kopylov

Hereby are demonstrated the results of the evaluation and benchmark study of drilling fluids influence on the ratio of a wellbore cavernosity and productive characteristics of gas condensate wells, Lower Cretaceous deposits, UNGKM after geological and technical measures for sidetracking.

side tracks geophysical diagnostic studies drilling fluids ratio of cavernosity wellbore productive character

Control bits speed by spectra of electric currents generated at rock destruction by drilling

Anton V. Epikhin

The scientific work is devoted to the phenomenon of the generation of electric currents in rock destruction by drilling. Its may be a promising new information channel of communication "well bottom-surface". The possibility of determining the value of speedrock-breaking tool by spectra of electric current for various geological, technical and technological conditions of the experiment. In addition, proof of the possibility of determining the technical condition of the bit on the characteristics of the electric currents. The use of the results will increase the efficiency and durability of the bit at the well bottom.

drilling rock electric current frequency of rock cutting tool spectra

Hydrodynamics of bore-hole hydromechanical compensator the pressure fluctuation of drilling fluid

Mavlitzyan S. Gabdrakhimov, Fedor I. Ermolenko, Timur N. Minnivaleev, Rustam I. Suleimanov

Drilling mud pump's operation is the main source of pressure fluctuations of flushing fluid during wells drilling. The pressure fluctuations lead to narrowing of the range of stableworking of downhole hydraulic motors, vibration, reducing the resistance ofthe bit, reducing the lifetime of surface and downhole drilling equipment. The article reveals the influence of uneven pressure of flushing fluid to the drilling process, provides analytical researchof working of the designed downhole hydro-mechanical compensator of pressure fluctuations of the flushing fluid, installed in the bottomhole assembly.

well hydraulic downhole motor bit drilling fluid pressure fluctuation compensator drillin

Optimization of preheating mode when restoring interlocks of drill pipe by welding

Dmitry A. Mikheev, Alexandr P. Amosov

The article is devoted to the optimization of technology of drill pipe repair by welding in respect of selection mode preheating. Thepaper analyzes modern sources of information on the selection mode preheating. The microstructural state of the metal body of the castle drill after the restoration was studied;the ways of further improving the technology were planned.

connect drilling drill pipe welding pre-heating

Solutions to the problem of the destruction of the threaded joints of artificial lift and drilling equipment

Mikhail V. Pesin, Daniil A. Subbotin, Maria A. Baeva, Anastasia V. Fedoseeva, Roman A. Turanskiy, Rishat K. Shakirov, Anna V. Grigoreva

It were revealed destruction sources of the thread of oilfield and drilling equipment in complicated conditions and made analysisof that sources. Deep roll thread method was considered to increase its durability.

hardening deep roll thread residual stresses surface plastic deformation

The experience of application of horizontal well construction technology on the terrigenous deposits of the collectors of Republic of Tatarstan

Taslia M. Murtazina, Ljubov M. Mironova, Evgeniya E. Andreeva, Yuriy M. Arefiev, Anna G. Baranova, Svetlana E. Valeeva

The purpose of drilling of wells with the horizontal termination in productive layer is reduction of number of wells of design fund without change of density of a grid, economy on infrastructure, development of hardly removable reserves of oil, including under settlements and their sanitary protection zones, nature protection zones of parks, resorts, reservoirs and forests; intensification, preservation and increase in production, petroextraction growth.

horizontal technology horizontal wells bobrikovskij horizon hard-to-recover reserves

Choice the valid radius of curvature for drilling small diameter channels by the Perfodrill technical system

Aleksandr V. Lyagov, Il'ya A. Lyagov

This article describes the experience of using a part of the bottom of the layout of the drill string perfodrill of small screw motor section and flexible interbody and between the rotor joints that reduce the radius of curvature to a value of5.3 m, and possibly less, as evidenced by bench tests.Moreover, the analytical studies suggest that the use of flexible compounds in the bottom of the layout of the drill string perfodrill provides trajectories of perforations with a minimum radius of curvature similar to the arc of a circle which is inscribed the Perfodrill BHA.

perforation channel well completion posit

Aluminum drill pipe as optimum hydraulic conductor for the drilling longest wells

Ivan A. Shevchenko, Roman S. Raykhert

Lately almost universally complicated drilling conditions. Increased drilling depth, started to drill horizontal wells with a large deviation from the vertical.Today an increasingly important role played by the total weight of the drill string, depending on the weight increase of the friction force, more effort and stress-strain state of the column. For deep, ultra-deep drilling and horizontal drilling pipes of aluminum alloys have an advantage over steel - the weightof the column is several times smaller. Use of aluminum drill pipe also avoids the maximum flow resistance in the circulation system of the well in order to transmit impulses to downhole telemetry and to best removal of cuttings to the surface.

aluminum drill pipe pipe material the drill string margin of safety longitudinal force

Producing of circulation systems of drilling mudscleaning in TMS Group

TMS group LLC Managing Co is projecting and producing circulation systems of drilling muds effective cleaning thatallows decreasing of expenses for well construction and meeting of all requirements of ecologylaw-legislation.

TMS Group circulation systems of drillingmuds cleaning TMS group LLC Managing Co

Modern technologies of oil and gas development of the Arctic shelf

Ksenia V. Anoshina

This article describes the main methods of developing the Arctic offshore fields namely, a floating drilling and gravity systems, horizontal drilling from shore, underwater drilling rigs, concrete examples, discusses the advantages and disadvantages of technology.

technology development of the Arctic shelf deposits mining of the Arctic shelf submari

Application of gas-turbine engines in pumping units complexes of hydraulic fracturing of oil and gas reservoirs

Anatoliy D. Kasyanov, Vladimir A. Gulyy, Sergey L. Makarov

Given the results of the comparison of the technical characteristics of gas turbine and diesel engines from the point of view of their use as a power in the mobile complexes for hydraulic fracturing of oil and gas reservoirs, shows the advantages of gas-turbine engines.


Investigation and evaluation of the influence of pressure fluctuation of drilling fluid on working of the boring tool

Mavlitzyan S. Gabdrakhimov, Timur N. Minnivaleev, Rif M. Galimov

Abstract Wells drilling technology requires steady circulation of the drilling mud. The article is devoted to the influence of pressure fluctuation of drilling fluid on working of the boring tool while drilling wells and evaluation of its quantity. The paper provides designed compensator which allowind to damp fluctuation of the stream.

well drilling mud pump turbodrill bit drilling fluid pressure fluctuation compensator