ISSN 1999-6934

Scientific-technical journal

EQUIPMENT AND TECHNOLOGIES

FOR OIL AND GAS COMPLEX

                                                                                                               published since 2001

December 2015                                         ¹ 6                                           6 issues per year

 

CONTENŅS

 

GEOLOGICAL, GEOPHYSICAL RESEARCH

 

Rukavitsyn Yą.V., Mammadov S.M., Okishev R.N. Conceptual grounds of the technology of non-stationary development and additional development of oil and gas fields by means of construction of horizontally branched and multihole wells (p. 4-12)

 

Nasybullin A.V., Sattarov R.Z., Vladimirov A.B., Khanipov M.N., Idiyatullina Z.S. Statistical analysis of geological and technological factors effect on horizontal wells’ efficiency of deposits nos 302, 303 (p. 12-16)

 

Korchagin S.A., Chemodanov V.E. Some method of evaluating rock tensile performance using the units which simulate rock compression in reservoir conditions (p. 17-21)

 

Karimov I.S., Mukhliev I.R., Sagidullin L.R. Horizontal drilling technologies prospects for developing kynovian hard to recover horizon in Romashkinskoe oilfield (p. 21-25)

 

MACHINERY AND EQUIPMENT

 

Azizova A.K., Iskhakov A.R., Kateev R.I., Kadyrov R.R., Gabbasova A.A., Sakhapova A.K. Domestic water-swelling packer for horizontal wells completion and workover (p. 26-30)

 

Pavlov O.A., Moiseev A.A., Sapun A.A., Babenkov M.V. Application of organizational and methodological principles when investigating the cause of equipment destruction (p. 31-33)

 

Sapun A.A., Kopytov D.V., Gurevich D.V., Babenkov M.V. Strength assessment and operational life-time extension of oil and gas equipment in case of fatigue loading (p. 33-36)

 

Kravtsov A.V., Gurevich D.V., Kopytov D.V., Kuznetsov M.N. Study of the causes of studs’ destruction of a pipeline flange joint containing hydrogen sulfide gas (p. 36-38)

 

Moiseev A.A., Pavlov O.A., Kravtsov A.V., Kopytov D.V. The study of changes of equipment metal hardness in case of a sample’s loading accumulation (p. 39-41)

 

Kravtsov A.V., Kuznetsov M.N., Babenkov M.V. Some aspects of the experience of power equipment diagnosis used when gas producing and processing (p. 42-44)

 

Gurevich D.V., Pavlov O.A, Moiseev A.A., Babenkov M.V. Re-evaluation of operational life-time period without accounting of high-frequency forced oscillations of equipment components (p. 45-49)

 

Pavlov O.A., Sapun A.A., Moiseev A.A., Kopytov D.V. Scale factor effect when diagnosing large-sized technological equipment (p. 49-51)

 

Ragimova M.S. Designing, constructing and preparing of oil field equipment for main pipelines (p. 52-54)

 

NEW METHODS AND TECHNOLOGIES

 

Yakimov S.B., Pushkarev A.V., Vetokhin E.G., Podkorytov S.M. Some techniques of incresing the time of de-sanders’ effective operation to protect electric centrifugal pumps from sand at samotlor field (p. 55-60)

 

Salimov O.V., Girfanov I.I., Kochetkov A.V., Ziyatdinov R.Z., Salimov V.G. Calculation of hydraulic fracture cleaning period in shale rocks (p. 61-65)

 

Demyanenko N.A., Povzhik P.P., Serebrennikov A.V., Galai M.I. Efficiency of the technology of building the system of branched drain holes of big extent and the ways of its improvement to increase operational efficiency (p. 65-73)

 

Kim S.L. Calculation of parameters of bimetallic compounds (p. 74-76)

 

ANNIVERSARY DATES

 

The 90th anniversary since the birthday of Yuriyu Grigorievichy Michailiny (p. 77-77)

 

Information on the articles (p. 78-87)

 

MEMORIAL DATES

 

Rukavitsyn Vladimir Nikolaevich (15.09.1941–06.10.2015) (p. 88-88)

 

 

Information on the articles

 

UDC 622.276+622.243.24

 

CONCEPTUAL GROUNDS OF THE TECHNOLOGY

OF NON-STATIONARY DEVELOPMENT AND ADDITIONAL DEVELOPMENT

OF OIL AND GAS FIELDS BY MEANS OF CONSTRUCTION

OF HORIZONTALLY BRANCHED AND MULTIHOLE

WELLS (š. 4)

 

Yaroslav Vladimirovich Rukavitsyn

 

CJSC "Geospector"

51-1-1, Vavilov str., 117296, Moscow, Russian Federation,

phone: +7 (910) 426-79-84,

e-mail: yaros3000@yandex.ru

 

Samir Masudovich Mammadov

 

LLC "NewTechServices"

31G, Shabolovka str., 115162, Moscow, Russian Federation,

phone: +7(985) 771-72-52,

e-mail: smammadov@nt-serv.com

 

Roman Nikolaevich Okishev

 

LLC "Gaspromgeologorazvedka"

70, Gertsen str., 625000, Tyumen, Russian Federation,

phone: +7 (3452) 54-09-54,

e-mail: okishev@ggr.gasprom.ru

 

Methodological grounds of the technological scheme of development and additional development of complicatedly-composed oil and gas fields at the latest stage of operation using horizontally branched multilateral wells are discussed. The measures to control construction of horizontal "qualitative wellbores" that ensure maximum contact with the producing formation and maximum stability of the horizontal section are presented. The algorithms of non-stationary control over injection agents’ flows and extracted hydrocarbons are submitted and the examples of industrial testing at pilot sites are given.

 

Key words: non-stationary control; field; horizontal well; producing formation; stability; development; physical and geological model.

 

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UDC 622.276.1/.4:622.243.24

 

STATISTICAL ANALYSIS OF GEOLOGICAL AND TECH­NOLOGICAL

FACTORS EFFECT ON HORIZONTAL WELLS’ EFFICIENCY

OF DEPOSITS NOS 302, 303 (š. 12)

 

Arslan Valerievich Nasybullin,

Ravil Zaitunovich Sattarov,

Alexey Borisovich Vladimirov,

Marat Nailievich Khanipov,

Zarina Salavatovna Idiyatullina

 

Tatar Oil Research and Design Institute "TatNIPIneft" – PJSC "TATneft" named after V.D. Shashin

32, Musy Jalil str., 423236 Bugulma, Republic of Tatarstan, Russian Fe­deration,

E-mail: arslan@tatnipi.ru, ravilsat@tatnipi.ru, alexis@tatnipi.ru, hanipov@tatnipi.ru, razrab_pr1@tatnipi.ru

 

By the example of the Romashkinskoye oil field deposits Nos. 302, 303 represented by the Bashkirian and the Serpukhovskian carbonate sediments, effect of various geological and technological factors on efficiency indicators of horizontal wells performance was analyzed using mathematical methods of classification and artificial cognition. As the result, the most informative and significant factors and criterion values are identified and the preferred horizontal wellbores’ directions are determined.

 

Key words: efficiency of horizontal wells performance; carbonate reservoir; geological and technological parameters; horizontal wellbore direction; multivariate analysis; classification trees; artificial cognition.

 

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UDC 620.17+550.8.08

 

SOME METHOD OF EVALUATING ROCK TENSILE PERFORMANCE

USING THE UNITS WHICH SIMULATE ROCK COMPRESSION

IN RESERVOIR CONDITIONS (š. 17)

 

Stepan Alexeevich Korchagin,

Vladimir Evgenievich Chemodanov

 

Samara State Technical University

244, Molodogvardeyskaya str., Samara, 443100, Russian Fede­ration,

e-mail: Korchagin.Stepa@yandex.ru

 

Prior to testing a cylindrical rock sample is made which is subjected to additional upgrading by means of drilling out of two cylindrical kerves on both ends of the cylinder coaxial with the sample. Thus, being pressed the sample shows the tensile stress in the area between the kerves.

The sample is subjected to step-by-step compression by confining external pressure up to the sample material fracturing, the moment of abrupt change of the pressure detector readings being taken for the breaking point of the sample material. Besides, the corresponding value of confining pressure is used as a breaking–down point according to continuum mechanics models. The paper also discusses the possibility of Young's modulus anisotropy estimation according to the ultrasonic waves’ velocity values.

The measurements can be made by the units used for performance showings measurement of standard cylindrical samples under the conditions close to the reservoir ones. This method can be applied for breaking strength testing in mining and constructing engineering.

 

Key words: breaking limit; rock anisotropy; Young modulus; ultrasound investigations; rock samples.

 

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UDC 622.276.1/.4(470.41):622.243.24

 

HORIZONTAL DRILLING TECHNOLOGIES PROSPECTS

FOR DEVELOPING KYNOVIAN HARD TO RECOVER HORIZON

IN ROMASHKINSKOE OILFIELD (š. 21)

 

Ildar Sirinovich Karimov

 

PJSC "Tatneft" named after V.D. Shashin

75, Lenin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation,

phone: 8 (8553)307-032,

e-mail: karimovis@mail.ru

 

Ilnur Rashitovich Mukhliev,

Lenar Rafisovich Sagidullin

 

"Jalilneft" Central Control Administration, PJSC "Tatneft" named after V.D. Shashin

2, Lenin str., Jalil pos., 423368, Sarmanovsky region, Republic of Tatarstan, Russian Federation,

phone: 8 (85559) 602-73, 602-59,

e-mail: dn_ro@tatneft.ru, dn_geo@tatneft.ru

 

The article reports on the first experience of drilling horizontal wells in the Upper Devonian deposits. The authors describe the practical experience of drilling a pilot hole to make more accurate estimates of the formation thickness, study the reservoir characteristics affected by its high heterogeneity. The article presents case studies of horizontal wells drilled, their performance, and estimates of economic benefits. Based on these results, technological and economic efficiency of drilling horizontal wells in Kynovian horizon compared to directional wells have also been presented. Based on geological and field analysis of wells drilled the authors suggest recommendations on improving the technical and economic parameters of drilling, including the need to drill a pilot hole. The best ways to complete the well and carry out hydraulic fracturing after drilling have been proposed.

 

Key words: kynovian horizon; low-permeability reservoirs; horizontal wells; hard to recover reserves; kynovian argillites; oilfield development; drilling; pilot hole.

 

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UDC 622.245.44

 

DOMESTIC WATER-SWELLING PACKER

FOR HORIZONTAL WELLS COMPLETION AND WORKOVER

(š. 26)

 

Aliya Kamilovna Azizova,

Alfiya Akhnakhovna Gabbasova

 

JSC "KVART"

25, Technicheskaya str., Kazan, 420054, Republic of Tatarstan, Russian Federation,

e-mail: azizova@kvart.bankorp.ru, szl@kvart.bankorp.ru

 

Albert Ravilevich Iskhakov,

Rustem Irekovich Kateev,

Alfiya Kamilevna Sakhapova

 

Tatar Oil Research and Design Institute "TatNIPIneft" – PJSC "TATneft" named after V.D. Shashin

64, Musy Jalil str., Bugulma, 423200, Republic of Tatarstan, Russian Federation,

e-mail: krep@tatnipi.ru, kateev@tatnipi.ru, Ers119@tatnipi.ru

 

Ramzis Rakhimovich Kadyrov

 

Almetyevsk State Petroleum Institute

6, Nekrasov str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation,

e-mail: ramzis.k@mail.ru

 

Application of conventional techniques of horizontal wells completion in heterogeneous reservoir does not provide uniform production over the entire horizontal length which makes it inefficient. The best practice of horizontal wells completion for their further operation in a heterogeneous pay zone is dividing it into separate production intervals depending on reservoir qualities. Swelling packer is one of the simplest and most reliable tools for zonal isolation. This paper describes the results of development of a domestic water-swelling packer specially designed for the conditions encountered in the fields operated by PJSC "Tatneft". The main components of the swelling element, the packer’s conceptual design and manufacturing procedure are also presented. The case studies of water-swelling packer application to isolate fractured intervals when conducting horizontal wells’ construction and workover are considered as well.

 

Key words: swelling packer; rubber; superabsorbent polymer; horizontal wells; well design; field tests; well liner.

 

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UDC 620.192.7:658.382.3

 

APPLICATION OF ORGANIZATIONAL AND METHODOLOGICAL PRINCIPLES

WHEN INVESTIGATING THE CAUSE OF EQUIPMENT DESTRUCTION (š. 31)

 

Oleg Alexandrovich Pavlov,

Alexander Anatolyevich Moiseev,

Alexey Alexandrovich Sapun,

Maxim Vladimirovich Babenkov

 

JSC "Safety Systems and Technologies. Techdiagnostics"

22, Yunykh Lenintsev str., 460047, Orenburg, Russian Federation,

phone: 8 (3532) 63-84-07,

e-mail: contact@tdiag.ru

 

Some methodical approach applied when investigating the causes of the equipment destruction used in oil and gas industry is described. The approach is developed on the basis of the existing industrial safety rules and requirements, being in force in Russia at present and is successfully applied in practice. Some practical example of investigating the causes of destruction of heat transfer tubes with defects, which were acquired during their manufacture, is discussed.

 

Key words: methodical approach; destruction; investigation; analysis.

 

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UDC 620.178.7

 

STRENGTH ASSESSMENT AND OPERATIONAL LIFE-TIME EXTENSION

OF OIL AND GAS EQUIPMENT IN CASE OF FATIGUE LOADING (š. 33)

 

Alexey Alexandrovich Sapun,

Dmitry Vladimirovich Kopytov,

Dmitry Viktorovich Gurevich,

Maxim Vladimirovich Babenkov

 

JSC "Safety Systems and Technologies. Techdiagnostics"

22, Yunykh Lenintsev str., 460047, Orenburg, Russian Federation,

phone: 8 (3532) 63-84-07,

e-mail: contact@tdiag.ru

 

High pressure and gas explosive composition in oil and gas equipment confirm high potential danger and special requirements for scientific assessment of strength and remaining operational life-time of the equipment. The article presents the results of scientific studies of tension regimes, stress-strain state as well as the results of the strength evaluation and the data of calculations of maximum permissible discontinuities in thick-walled metal of absorber of zeolite gas purification, which undergoes low-cycle loading during the operation. On the basis of the works performed, recommendations on non-destructive testing of such absorbers are given, restrictions of operational thermal cycle are set, remaining life-time resource is assessed.

 

Key words: thermal cyclic loading; cycle; total operational time; stress-strain state; absorber; thick-walled equipment; welds’ cracking; finite element method.

 

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UDC 620.192.7+621.643.411.4

 

STUDY OF THE CAUSES OF STUDS’ DESTRUCTION

OF A PIPELINE FLANGE JOINT CONTAINING HYDROGEN SULFIDE GAS

(š. 36)

 

Alexander Viktorovich Kravtsov,

Dmitry Viktorovich Gurevich,

Dmitry Vladimirovich Kopytov,

Mikhail Nikolaevich Kuznetsov

 

JSC "Safety Systems and Technologies. Techdiagnostics"

22, Yunykh Lenintsev str., 460047, Orenburg, Russian Federation,

phone: 8 (3532) 63-84-07,

e-mail: contact@tdiag.ru

 

The article discusses the causes of studs’ destruction of pipelines flange joints containing raw hydrogen sulfide gas. The results of the laboratory studies of three studs, which resulted in revealing regulatory requirements discrepancy of a number of the metal properties are presented. It is found that the root cause of requirements discrepancy lies in violation of heat treatment modes.

 

Key words: stud; hydrogen sulfide gas; break; mechanical testing; metal; microstructure; micro-crack; heat treatment.

 

Key words: electric dehydration; electric desalting; heavy oil; electric conductivity; electric intensity.

 

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UDC 622.276:620.178.7

 

THE STUDY OF CHANGES OF EQUIPMENT METAL HARDNESS

IN CASE OF A SAMPLE’S LOADING ACCUMULATION (š. 39)

 

Alexander Anatolyevich Moiseev,

Oleg Alexandrovich Pavlov,

Alexander Viktorovich Kravtsov,

Dmitry Vladimirovich Kopytov

 

JSC "Safety Systems and Technologies. Techdiagnostics"

22, Yunykh Lenintsev str., 460047, Orenburg, Russian Federation,

phone: 8 (3532) 63-84-07,

e-mail: contact@tdiag.ru

 

The article investigates the changes of metal samples hardness of oil and gas equipment in case of micro-damages accumulation. The article presents the results of revealing of maximum stress zones by the finite elements method and experimental determination (using strain measurement) of test loadings. The results of testing of T-shaped samples hardness under the cyclic loading (up to 500 cycles) by the load of 68 kN are shown. Based on these studies of the changes of the equipment metal hardness in case of stress accumulation, it is found that to assess the metal properties changes of the equipment is only possible for loadings of more than 500 cycles.

 

Key words: measurement of hardness; stress-strain state; strain measurement; cyclic loading; finite element method.

 

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UDC 622.276:620.178.7

 

SOME ASPECTS OF THE EXPERIENCE OF POWER EQUIPMENT DIAGNOSIS

USED WHEN GAS PRODUCING AND PROCESSING (š. 42)

 

Alexander Viktorovich Kravtsov,

Mikhail Nikolaevich Kuznetsov,

Maxim Vladimirovich Babenkov

 

JSC "Safety Systems and Technologies. Techdiagnostics"

22, Yunykh Lenintsev str., 460047, Orenburg, Russian Federation,

phone: 8 (3532) 63-84-07,

e-mail: contact@tdiag.ru

 

This article lists the basic requirements for employees and laboratories carrying out industrial safety examination of power equipment at the facilities of gas production and processing. Some examples of the most common divergences of parameters of the equipment technical condition are shown, a list of the required methods of non-destructive control to detect the main types of defects is defined. Based on the experience of diagnosing, a comparison of the proportion of those or other types of defects is carried out as well as suggestions on expanding of the range of equipment subject to industrial safety expertise are submitted.

 

Key words: power equipment; expertise of industrial safety; electrical power facilities; electric power measurements; diagnosing; nondestructive testing; degree of diagnosing.

 

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UDC 620.178.5:531.781.2

 

RE-EVALUATION OF OPERATIONAL LIFE-TIME PERIOD

WITHOUT ACCOUNTING OF HIGH-FREQUENCY FORCED OSCILLATIONS

OF EQUIPMENT COMPONENTS (š. 45)

 

Dmitry Viktorovich Gurevich,

Oleg Alexandrovich Pavlov,

Alexander Anatolyevich Moiseev,

Maxim Vladimirovich Babenkov

 

JSC "Safety Systems and Technologies. Techdiagnostics"

22, Yunykh Lenintsev str., 460047, Orenburg, Russian Federation,

phone: 8 (3532) 63-84-07,

e-mail: contact@tdiag.ru

 

The article presents the problem of estimating of operational life-time period of a compressor connection equipment with defects due to age. Complex approach of experimental determination of the stress-strain state of parameters is proposed. It demands performing of non-destructive testing, vibro-examination, strain measurement and thermometry; the results of examination are used when calculating stresses in buffer vessel metal by finite element method. Comparison of the traditional method when calculating with load only by internal pressure and its own weight) and the proposed one revealed 10…30 % underestimation of stress.

 

Key words: re-evaluation of the life-time period; stress-strain state; vibrometry; strain measurement; thermometry; finite element method.

 

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UDC 620.178.5:531.781.2

 

SCALE FACTOR EFFECT WHEN DIAGNOSING

LARGE-SIZED TECHNOLOGICAL EQUIPMENT (š. 49)

 

Oleg Alexandrovich Pavlov,

Alexey Alexandrovich Sapun,

Alexander Anatolyevich Moiseev,

Dmitry Vladimirovich Kopytov

 

JSC "Safety Systems and Technologies. Techdiagnostics"

22, Yunykh Lenintsev str., 460047, Orenburg, Russian Federation,

phone: 8 (3532) 63-84-07,

e-mail: contact@tdiag.ru

 

This article reviews the scale factors and their influence on the results of diagnosing of large-sized technological equipment on the example absorbers of amine treatment units of natural gas from hydrogen sulfide.

The factors of heterogeneity of metal chemical composition, non-uniformity of corrosion processes and the initial level of defects which were present at the moment of absorbers’ manufacture are defined.

Factors of heterogeneity of environment corrosive activity, stress-strain state, temperature, and flow rates of technological environments as well as the scale factor, which is manifested during equipment diagnosing, are discussed.

The levels of maximum values of a wall thickness of an absorber shell are determined and recommendations on the inspection of large-scale technological equipment are given.

 

Key words: large-scale factor; large-scale equipment; absorber; corrosive wear-out; diagnostics.

 

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UDC 622.02

 

DESIGNING, CONSTRUCTING AND PREPARING

OF OIL FIELD EQUIPMENT FOR MAIN PIPELINES

(p. 52)

 

Mahluga Surkaevna Ragimova

 

Azerbaijan State Oil Academy

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

e-mail: rahimova_mahluga@mail.ru

 

The article concerns the methodic determining reliability of oil-field equipment, machines and mechanisms, including Christmas trees and their details and knots which are determined by calculation methods.

In machine-building parts made in the form of various shells and plates and connected with the flanges are used.

Flange couplings of the parts used in power and transport machinebuilding are closely fitting.

It is necessary to consider contact hardness of the coupling in the calculations of strained state of flange couplings and adjoining fields. In this case complex and signifcant problem of determining. Contact tension on the territory of close fitting of flange coupling occurs. The size of territory of close fitting depends on the tighting coefficient of total effort of bolt fighting of flange couplings to the axis effort.

And also it depends on external loading and hardness of the construction and are important indices of flange couplings reliability.

Calculation and problems of optimal projecting of parts closely fitting flange couplings are described in the article.

 

Key words: christmas tree; packer; flange couplings; parts and units.

 

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UDC 626.222

 

SOME TECHNIQUES OF INCRESING THE TIME

OF DE-SANDERS’ EFFECTIVE OPERATION TO PROTECT

ELECTRIC CENTRIFUGAL PUMPS FROM SAND

AT SAMOTLOR FIELD (š. 55)

 

Sergey Borisovich Yakimov

 

JSC "NC "Rosneft"

26/1, Sofia embankment, 117997, Moscow, Russian Federation,

e-mail: postman@rosneft.ru

 

Alexander Vladimirovich Pushkarev,

Evgeny Gennadievich Vetokhin

 

JSC "Samotlorneftegas"

4, Lenin str., 628606, Nizhnevartovsk, Tyumen region, Khanty-Mansi autonomous territory, Russian Federation,

e-mail: NVSNGinfo@rosneft.ru

 

Sergey Mikhailovich Podkorytov

 

LLC "Neftespetstechnika"

44A, office 4.6, Melnikaite str., Tyumen, 625048, Russian Federation,

e-mail: oil_texn_sib@mail.ru

 

To protect the wells with electric submersible pumps units from sand at Samotlor oil field de-sanders (sand separators of centrifugal-inertial type) become more and more applicable. One of the problems that reduce the effectiveness of de-sanders use is insufficient volume of containers used for the separated sand removal. The article discusses possible ways to increase the volume of containers for sand with account of some specific features of sand-carrying wells operation of Samotlor field. One of the ways of solving the problem of containers’ insufficient volume can be removal of separated sand into sump. The results of the first field tests of this technology are described, assessment of the potential of its use is made.

 

Key words: sand control; protection of downhole equipment from sand; de-sanders; sand separators; increase of inter-repair period of time at the wells with ESP units.

 

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UDC 622.276.66

 

CALCULATION OF HYDRAULIC FRACTURE CLEANING PERIOD

IN SHALE ROCKS (š. 61)

 

Oleg Vyacheslavovich Salimov,

Ildar Ilyasovich Girfanov,

Aleksander Viktorovich Kochetkov,

Radik Zauzyatovich Ziyatdinov

 

Tatar Oil Research and Design Institute "TatNIPIneft" – PJSC "TATneft" named after V.D. Shashin

32, Musy Jalil str., 423236, Bugulma, Republic of Tatarstan, Russian Federation,

phone: 8(85594) 78-984, 78-998, 78-660,

e-mail: sov@tatnipi.ru, gii@tatnipi.ru, kav6365@tatnipi.ru, ziz5969@tatnipi.ru

 

Vyacheslav Gainanovich Salimov

 

Volga-Kama Regional Branch of the Russian Academy of Natural Sciences

32, Musy Jalil str.,423236, Bugulma, Republic of Tatarstan, Russian Federation,

phone: 8(85594) 78-406,

e-mail: salimov@tatnipi.ru

 

The problem of determination of the volume of the extracted fracturing liquid and duration of the cleaning period in shale deposits is urgent.

The paper discusses the methods and possibilities of carrying out such estimation in case of use of various simulators of formation hydraulic fracturing. It has been concluded that application of Fracpro combined with "TEMPEST MORE" software is the most perspective method. To convert the format of export files, F2E converter is recommended.

The paper presents an example of calculation of the volume of the recoverable fracturing fluid and the duration of the cleaning period for the standard conditions of Domanikian formations of the Tatarstan Republic. It has been found that the volume of the recoverable fluid does not exceed half of the total volume of the fluid injected when conducting formation hydraulic fracturing; the duration of the cleaning period is about one month.

It shall be borne in mind that acid fracturing treatments involve increase of water phase volume in a formation that happen because of carbonate minerals dissolving in hydrochloric acid.

 

Key words: hydraulic fracturing; shale deposits; well completion; period of fracture cleaning.

 

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UDC 622.276.1/.4

 

EFFICIENCY OF THE TECHNOLOGY

OF BUILDING THE SYSTEM OF BRANCHED DRAIN HOLES

OF BIG EXTENT AND THE WAYS OF ITS IMPROVEMENT

TO INCREASE OPERATIONAL EFFICIENCY (š. 65)

 

Nikolay Alexandrovich Demyanenko,

Petr Petrovich Povzhik,

Anton Valerievich Serebrennikov,

Mikhail Ivanovich Galai

 

Production Association "Belorusneft"

15b, Knizhnaya str., 246003, Gomel, Republic of Belarus,

phone: +375232790257,

e-mail: n.demyanenko@beloil.by

 

The article considers the results and the efficiency of works aimed at inflow stimulation in low-permeable carbonate and terrigenous reservoirs using the technology of building of the network of deeply penetrating radial filtration drain holes at the oil fields of the Belarus Republic. It is proved, that the technology allows 2…5 times increase of the wells’ production rates. The main geological reasons affecting the efficiency of the technology are formation pressure, open porosity factor and net pay of an inter-layers, in which radial drain holes are done. An important moment for work efficiency increase is the right choice of operating fluids. Implementation of water-based operating fluids enables creating of a water block zone around the drain holes. This leads to significant increase of a well response time, and in some cases to the loss of wells initial productivity. It is shown that, operating fluids and compositions for production stimulation in radial drain holes, created in reservoirs low permeable differences should possess hydrophobic reservoir properties in a near-hole zone. Some recommendations for technology efficiency improvement are given in the article.

 

Key words: system of deeply penetrating radial drain holes of filtration; porosity factor; net pay; low permeable formations; operating fluid; reservoir water block; acid composition; hydro-phobization; hydrophobic adsorption layer.

 

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UDC 501

 

CALCULATION OF PARAMETERS

OF BIMETALLIC COMPOUNDS (š. 74)

 

Stanislav Leonidovich Kim

 

Institute of Mechanics , Ural branch of RAS

34, Baramzina str., Izhevsk, 426067, Russian Federation,

e-mail: lgkim@yandex.ru

 

Obviously, today, it is insufficient to use the existing methods of physical-chemical processes determination where calculation and definition of characteristics occur at the micro- and macro-levels. To reduce labor costs, time and financial components it is necessary to transfer to atomic (nano) level of measurement with description and creation of new models and methods for the determination of physical-chemical processes occurring during the formation of bimetallic compounds and multi-component materials.

 

Key words: bimetals; physical-chemical process.

 

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THE 90TH ANNIVERSARY SINCE THE BIRTHDAY

OF YURIYU GRIGORIEVICHY MICHAILINY

(p. 77)

 

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RUKAVITSYN VLADIMIR NIKOLAEVICH

(15.09.1941–06.10.2015)

(p. 88)

 

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