Construction of Oil and Gas Wells on Land and Sea

The article analyzes the actual and estimated data on the zenith angle stabilization in five wells Nong-Yoganskogo and Severo-Pokachevskogo fields in ten intervals (158 points of the zenith angle measurement and calculation of the lateral force on a bit), where the zenith angle was stabilized by the oriented bottom-hole assembly (BHA) by the uniform, periodic (through 90°) stick-slipping of BHA. The lateral force on a drill-bitis calculated with account of the actual wells deviation in their bottom zone. Graphs are constructed and found statistically reliable linear equations of connection of the intensity of the local zenith wells deviation (every 10 meters in its stabilization sectors) and the average (with one rotation of BHA) lateral force on a bit are developed. The qualitative similarity of such equations with the dependencies at the sectors of either increase or decrease of the zenith angle is noted. In real conditions, stabilization of the value of the average lateral force and the local intensity of the deviation vary along the approximating line almost via zero, herewith, the majority of the points tend to zero. The distribution of these values at the sectors of the zenith angle stabilization corresponds to the normal distribution law and the indicator maximum frequency occurs when their values are approaching the zero, hence the condition of the zenith angle complete stabilization should be the equality to the zero of the average lateral force on a bit. To provide the effective conditions of the zenith angle stabilization, a drilling technology with the uneven periodicity of BHA stick-slipping during wells deepening (different drilling with different angles of the deviator orientation) is suggested and described in detail.

Keywords: borehole; oriented bottom-hole assembly (BHA); local zenith deviation; deviation stabilization; lateral force on a bit; BHA uniform and non-uniform stick-slipping; length of drilling intervals; deviator orientation angle.

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UDC 622.22

CALCULATION OF THE STRENGTH
OF A DRILLING LIFTING MECHANISM (p. 7)

F.M. Gafarov, M.S. Ragimova

Azerbaijan State Oil and Industry University

20, Azadlyg prosp., Baku, AZ1010, Republic of Azerbaijan,

e-mail: rahimova_mahluqa@mail.ru

The majority of the carrying units of the oilfield equipment work under the step load. The hypothesis of the linear summing of the fatigue damages under non-stationery cyclic tests is not proved.

Keywords: drilling equipment; hook; equivalent coefficient; lifting mechanism; strength.

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UDC 622.24.051.55

UPDATING OF TEETH CUTTING STRUCTURES
OF DRILLING EQUIPMENT (p. 10)

Dmitry Yurievich Serikov,

Nikolay Mitrofanovich Panin

Gubkin Russian State University of Oil and Gas (NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation,

phone: (915) 372-77-79 (Serikov D.Yu.),

e-mail: serrico@rambler.ru

The article presents the results of work aimed at updating the design of the teeth cutting structures of drilling tools. The existing methods of fastening of hard-alloy teeth in the drilling toolsare analyzed. The main shortcomings of the existing methods of fastening are revealed and the directions for their improvement are determined. New methods of fastening of the hard-alloy teeth have been developed, which make it possible to improve the reliability of their fixation in the drilling tool body are developed.

The practical application of the proposed new variants of the hard-alloy teeth cutting structures will significantly increase the reliability of the toothed elements fixing in the body of the rock-crushing drill tool and thereby reduce the possibility of the teeth elements stick-slipping and falling out during the tool operation, what, in its turn, will increase the efficiency and reduce the cost of drilling operations.

Keywords: drilling tools; hard-alloy tooth; eccentricity; collet sleeve.

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UDC 622.24.051.55

EXPRESS-METHOD OF STRENGTH CALCULATION
OF STEEL REINFORCED TEETH CUTTING STRUCTURES (p. 14)

Dmitry Yurievich Serikov

Gubkin Russian State University of Oil and Gas (NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation,

phone: (915) 372-77-79 (Serikov D.Yu.),

e-mail: serrico@rambler.ru

An express technique to calculate the strength of the steel reinforced teeth cutting structures of roller cutter drilling tools is presented. The main load factors affecting the teeth cutting structures and the directions of their impact are revealed. It is fixed that one of the most destructive impacts on the drill-bit cutting structures are the bending loads that pay effect on the roller-cutter teeth during their "rolling" along the wells bottom area.

The conducted studies, resulted in a technique development applied to calculate the static strength of the steel reinforced cutting structures in accordance with the allowable stresses of the bend, based on the method of the given cross section.

Keywords: elastic modulus; allowable bending stress; reinforcing material.

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UDC 621.644.074

THE REQUIREMENTS FOR THE DRILLING MUD PROPERTIES
THAT ARE USED FOR THE CONSTRUCTION OF SUBMERGED CROSSINGS
BY THE DIRECTIONAL DRILLING METHOD (p. 17)

Zarif Zakievich Sharafutdinov,

Dinar Rafaelevich Vafin,

Dmitry Alexandrovich Shatalov

LLC «NII Transneft»

47a, Sevastopolsky prosp., Moscow, 117186, Russian Federation,

phone: +7 (495) 950-82-95,

e-mail: SharafutdinovZZ@niitnn.transneft.ru, VafinDR@niitnn.transneft.ru, ShatalovDA@niitnn.transneft.ru

Alexey Nikolaevich Sapsay

PJSC «Transneft»

57, Bolshaya Polyanka, Moscow, 119180, Russian Federation,

phone: +7 (495) 937-44-77,

e-mail: transneft@ak.transneft.ru

The paper discusses the problems of the development of the requirements for drilling muds technological properties that are used when constructing wells of trunk pipelines submerged crossing. Identifies The main technological characteristics of drilling muds and their limitations when constructing large-diameter wells in relation to the properties of the ground being drilled.

Keywords: drilling mud; directional drilling; construction of pipelines’ submerged crossings; technological parameters of drilling muds.

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UDC 622.24:622.084.34:622.245.723

COMPOSITE MATERIALS OF CJSC «POLYCELL»
FOR OIL AND GAS INDUSTRY (p. 28)

Sergey Ivanovich Smirnov,

Sophia Vladimirovna Karlovich,

Vladimir Nikolaevich Kryazhev,

Sergey Vadimovich Kryukov

CJSC «Polycell»

77, Bolshaya Nizhegorodskaya str., Vladimir, 600016, Russian Federation,

Е-mail: czl@polycell.ru

A technique of prevention and elimination of drilling fluids losses – treatment of drilling fluid by colmatant fillers – is considered in the article. The use of colmatants of «Polycell CF» series when repairing wells is shown. «Glital»» and «Polytal» integral-action reagents which provide a borehole stability, preservation of productive formations permeability, reduction of filtration, improvement of lubrication and anti-wear properties of drilling fluids, decrease of the risk of stuck pipe the puffs of drilling tools pulling and sticking, etc. are described.

Keywords: well construction; drilling fluid; «Рolycell CF» reagents-colmatants; «Glital» – an integral-action reagent; «Polytal» – an integral-action reagent.

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UDC 622.692.4.07

MATHEMATICAL MODELING OF GAS TRANSPORTATION
ON THE BASIS OF MIXED COMPUTING SYSTEMS (p. 32)

Sergey Vladimirovich Spiridonov

Institute of Control Problems, the Russian Academy of Sciences

65, Profsoyuznaya str., Moscow, 117997, Russian Federation,

phone: (919) 102-05-01,

e-mail: spirid.sv@gmail.com

Dmitry Yurievich Serikov

Gubkin Russian State University of Oil and Gas (NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation,

phone: (915) 372-77-79 (Serikov D.Yu.),

e-mail: serrico@rambler.ru

The article describes a new approach to flow modeling in complex gas transmission systems, based on using hybrid multi-processor computing systems based on computational clusters of mixed type for solving the problems of the quick dispatch control (QDC) of gas transportation.

Keywords: hybrid computing; high-producive cluster systems; modeling of gas transmission systems.

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UDC 622.276.6

SOME ASPECTS OF THE ZONAL APPROACH ADVANTAGES
WHEN MODELING HYDRODYNAMIC PROCESSES IN THE FORMATIONS
OF THE OIL FIELDS AT THE LATE STAGE OF THEIR DEVELOPMENT (p. 37)

Naida Ismet Guseynova

Scientific Research Project Institute «Neftegaz», SOCAR

88A, Zardabi prosp., Baku, AZ1012, Republic of Azerbaijan,

phone: +994 (012) 521-19-79,

e-mail: hnaida@rambler.ru

The paper proves the feasibility of a zonal approach for the additional development of oil fields at a late stage of operation. A sequential estimation method of the hydrodynamic state of a productive formation selected zone before and after the application of enhanced oil recovery methods is proposed.

Keywords: further development of oil fields; late stage of a field development; zonal approach; stimulation methods; well interference; flow function; potential function; analysis of a reservoir hydrodynamic state.

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UDC 622.276.65.05

CALCULATION OF HEAT EXCHANGE EQUIPMENT
TO A FORMATION THERMAL STIMULATION (p. 39)

Vasif Talib Mamеdov

Azerbaijan State Oil and Industry University

20, Azadlyg prosp., Baku, AZ1010, Republic of Azerbaijan,

phone: +994 (012) 598-44-77,

e-mail: mehriban1967@inbox.ru

The calculation of the heat exchange equipment for a formation thermal stimulation is discussed. The equation of heat conductivity is used for this purpose. The process of heat transfer is considered for two cases: plane and cylindrical walls. Based on the calculation, similar parameters are obtained for both the plane and cylindrical walls of the heat-exchange equipment.

Keywords: oil reservoir; heat flow; heat transfer; thermal conductivity; thermal resistance.

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MEMORY OF MUKHARBEK NIKOLAEVICH URUMOV
(p. 47)

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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY"

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