ISSN 0207-2351 Scientific-technical journal published since 1965 March 2018 ¹ 3 12 issues per year
CONTENÒS |
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DEVELOPMENT OF OIL AND GAS-OIL FIELDS |
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METHODS OF PRODUCING EFFECT ON A DEPOSIT AND RAISING OIL RECOVERY |
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RESEARCH OF FORMATIONS AND WELLS |
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TECHNIQUE AND TECHNOLOGY OF OIL PRODUCTION |
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Seidahmedov N.S. Effect of gas leakages through valve plates on piston compressors output (p. 56‑59) |
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CORROSION AND ENVIRONMENT PRESERVATION |
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GATHERING, TRANSPORTATION AND PREPARATION OF OIL, GAS AND WATER |
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Information on the articles |
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UDC 622.279.23/.4 DOI: 10.30713/0207-2351-2018-3-5-10
OPTIONS
FOR INCREASING THE EFFICIENCY OF DEVELOPMENT
R.I. Sharipov, A.I. Davletshin, A.Yu. Yushkov
LLC "Tyumen Petroleum Research Center" 42, Maxim Gorky str., Tyumen, 625048, Russian Federation, e-mail: risharipov@rosneft.ru, aidavletshin@rosneft.ru, ayyushkov@rosneft.ru
O.A. Loznyuk
PJSC "OC "Rosneft" 26/1, Sophijskaya naberezhnaya, Moscow, 115035, Russian Federation
Low-amplitude gas deposits in the Cenomanian horizons are characterized by large areas but by small gas levels, a high gas filling factor, open porosity and permeability, which causes their high productivity. A small gas column and high reservoir connectivity lead to premature wells retirement caused by flooding by formation edge or bottom water. The peculiarities of development of the Cenomanian low-amplitude gas deposits were revealed by means of a comparative analysis of the main technological indicators of development with several deposits-analogues. The aquifer’s significant effect on the energy state of the low-amplitude deposit and its operational indicators are identified as well. The operation of wells and gas collectors in the low-amplitude gas deposits under development is complicated by the high water-gas ratio of the fluid stream, thus causing increase of frictional losses in the network of gas collection and transportation, the inlet pressure drop in the booster complex and failure to get the withdrawal rates. Effectiveness of the implementation of new high-tech decisions (intellectual completion with the possibility of selective waterproofing, automated supply of surfactants, separation of water in gas wells clusters) was assessed to improve the technical-economic efficiency of the Cenomanian low-amplitude gas deposits development and to increase the value of gas extraction factor. All proposed measures require determination of the expediency of their implementation by approbation in conditions of low-amplitude gas deposits subjected to active water flooding. Predictive technological indicators of the Cenomanian gas deposit development of the Pyreynoe gas-condensate field have been calculated for the development of the deposits with the liquid phase removal from the production system (wells – gas network – booster complex). The implementation of the variant of the liquid surfactants dosed supply and the formation water separation in the well clusters allows to prolong the period of constant withdrawals, to substantially increase the gas extraction factor and to decrease the average pressure loss in the wells and gas network.
Keywords: the Cenomanian low-amplitude gas deposits; results of hydro-chemical control; water-flooding of a gas reservoir; separation of formation water in gas wells.
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UDC 622.276.66 DOI: 10.30713/0207-2351-2018-3-11-18
EVALUATION
OF THE EFFICIENCY
R.Z. Nurgaliev
Almetyevsk State Petroleum Institute 2, Lenin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation, e-mail: agni-nich@mail.ru
R.B. Rafikov
"Jalilneft" Oil and Gas Production Department, PJSC "Tatneft" named after V.D. Shashin 2, Lenin str., Jalil-city, 423368, Republic of Tatarstan, Russian Federation, tel.: (855) 596-03-08, fax: (855) 337-00-16, e-mail: jalil@tatneft.ru
N.I. Khisamutdinov, I.Sh. Shchekaturova, A.G. Khabibrakhmanov
LLC "NPO "Neftegaztechnologia" 96/2, Revolutsionnaya str., Ufa, 450078, Republic of Bashkortostan, Russian Federation, tel.: (347) 228-18-75, å-mail: npo@ngt.ru
The article presents the evaluation of the efficiency of a formation hydraulic fracturing in producing wells of D0 and D1 formations of Alkeevskaya area. The consideration of geological and technological factors is detailed by the applicability criteria in the field of a hydraulic fracturing planning and allows not only to achieve oil high additional production, but also to substantially increase it, primarily by involving the additional previously undrained oil reserves. The detailed analysis of the effect of the formation geological characteristics, the density of residual and recoverable oil reserves and the formation energy parameters on the oil production efficiency after the formation hydraulic fracturing, resulted in amending the previously known approaches to the well selection criteria to be subjected to a formation hydraulic fracturing.
Keywords: hydraulic fracturing of a formation; producing well; oil production growth; criteria of applicability.
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UDC 622.276.63 DOI: 10.30713/0207-2351-2018-3-19-28
METHODS
OF WORMHOLES SIMULATION UNDER
Regina Dmitrievna Kanevskaya, Alexey Viktorovich Novikov
Gubkin Russian State University of Oil and Gas (NRU) 65, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: pmkm2014@yandex.com, cranon@yandex.ru
The article overviews the methods of wormholes modeling, which occur during the hydrochloric acid effect on a carbonate formation. Wormholes are narrow or cavernous canals formed during the rock intensive dissolution of. A lot of facts indicate that the formation and distribution of wormholes is the most effective mode of acid effect on carbonates, which is of practical interest. The acidic effects modeling with account of wormholes formation, is complicated by the multiscale structure of the pore space. At present, there are no reliable models and methods for assessing the acidic effects, that account for the wormholes spreading in the required scale. The proposed review considers both "mechanistic" approaches to the description of wormholes, based on the pores critical size, capillary tube models, grid models of the pore space, based on the Peclet and Damköhler numbers, and numerical equilibrium and nonequilibrium models of different scales.
Keywords: acid effect; hydrochloric acid treatment; dissolution of the rock; wormholes; carbonate formation; model of capillary tubes; the Dämköhler number; the Peclet number; equilibrium and nonequilibrium models of hydrodynamics; averaging of the equations of a multiscale medium hydrodynamics.
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UDC 622.276.66.013 DOI: 10.30713/0207-2351-2018-3-29-34
PECULIARITIES
OF WELLS INTERFERENCE INFLUENCE ON THE EFFICIENCY
R.Z. Nurgaliev
Almetyevsk State Petroleum Institute 2, Lenin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation, e-mail: agni-nich@mail.ru
I.R. Mukhliev, L.R. Sagidullin
"Jalilneft" Oil and Gas Production Department, PJSC "Tatneft" named after V.D. Shashin 2, Lenin str., Jalil-city, 423368, Republic of Tatarstan, Russian Federation, tel.: (855) 596-03-08, fax: (855) 337-00-16, e-mail: jalil@tatneft.ru
I.Sh. Shchekaturova, A.A. Rakhmatullin
LLC "NPO "Neftegaztechnologia" 96/2, Revolutsionnaya str., Ufa, 450078, Republic of Bashkortostan, Russian Federation, tel.: (347) 228-18-75, å-mail: npo@ngt.ru
The article shows the importance of accounting for the influence and interference of wells when selecting wells-candidate wells for application of the hydraulic fracturing technology. Despite the high efficiency of a formation hydraulic fracturing in focal wells, the influence of well interference may negatively affect the total oil production in the area. It does not happen during conducting of the gas-dynamic fracturing of a formation (GDFF). This is caused by the fact that the aggregates energy when conducting hydraulic fracturing of a formation, transferred to the formation, is 6…8 times higher as compared with gas-dynamic fracturing of a formation (GDFF). That’s why, fractures’ spreading or formation covers a large area of the reservoir. It is preferable to apply the GDRP method in the densely drilled sites of D0 and D1 formations of Alkeevskaya area with a high mutual interference coefficient to enhance oil recovery.
Keywords: adjacent well; hydraulic fracturing of a formation; interference of wells; increase in production.
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UDC 622.276.66 DOI: 10.30713/0207-2351-2018-3-35-39
COMPARATIVE
ANALYSIS AND INTENSIFICATION
R.B. Rafikov, R.Yu. Shamsutdinov
"Jalilneft" Oil and Gas Production Department, PJSC "Tatneft" named after V.D. Shashin 2, Lenin str., Jalil-city, 423368, Republic of Tatarstan, Russian Federation, tel.: (855) 596-03-08, fax: (855) 337-00-16, e-mail: jalil@tatneft.ru
I.R. Safiullin, I.Sh. Shchekaturova, A.A. Rakhmatullin
LLC "NPO "Neftegaztechnologia" 96/2, Revolutsionnaya str., Ufa, 450078, Republic of Bashkortostan, Russian Federation, tel.: (347) 228-18-75, e-mail: npo@ngt.ru
Based on the experience of application of enhanced oil recovery methods and technologies of oil inflow intensification to wells bottom, such as hydraulic fracturing of a formation and various modifications of gas-dynamic fracturing of a formation, the article compares their technological and economic efficiency in the conditions of D0 and D1 formations of Alkeevskaya area. It is established that increase of oil extraction per a well operation applying the method of a formation hydraulic fracturing is 1,67 times higher as compared with the method of gas-dynamic fracturing of a formation. However, a significant additional amount of water received as a result of a formation hydraulic fracturing makes this measure more expensive. Generalization of the above-mentioned technologies resulted in making conclusions on the expediency of application of the discussed methods of enhanced oil recovery (EOR) specifically for the D0 and D1 formations and amendments are made to the methodology of wells-candidates selection for hydraulic and gas-dynamic fracturing of a formation.
Keywords: hydraulic fracturing of a formation; gas-dynamic formation fracturing of a formation; efficiency; additional production; cost.
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UDC 622.276.65-97 DOI: 10.30713/0207-2351-2018-3-40-42
DETERMINATION
OF THE EFFICIENCY
Sh.Sh. Huseynov
"Absheronneft" Oil and Gas Production Department of PA "Azneft"
Based on the laboratory studies, a thermochemical reagent designed to clean the porous medium from asphalt-tar and paraffin sediments is developed and introduced. The data of the laboratory studies of the temperature received during the reaction of the reagent constituent components as well as the effect of these components on the oil recovery factor and permeability of the porous medium are presented. The effectiveness of the developed composition is confirmed by the field researches at the production well.
Keywords: well bottom zone; permeability; oil recovery; thermochemical treatment; reagent.
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UDC 550.832.44 DOI: 10.30713/0207-2351-2018-3-43-49
USE OF
SEISMIC-ACOUSTIC EMISSION LOGGING
Galina Valentinovna Igolkina, Veniamin Viktorovich Dryagin
Yu. Bulashevich Institute of Geophysics, Ural branch of RAS 100, Amundsen str., Yekaterinburg, 620016, Russian Federation, tel.: (343) 267-97-27, fax: (343) 267-88-72, e-mail: galinaigolkina@yandex.ru, vvdrygin@mail.ru
The article presents the results of studying the identification of oil and gas wells’ fluid-saturated reservoirs by applying the method of seismic-acoustic emission logging (SAEL-SAED). The method of seismic-acoustic emission logging allows clear identification of fluid-saturated reservoirs: oil- and water-saturated reservoirs. The data of the correlation coefficient calculation between the permeability coefficient Kpr. and natural seismic-acoustic emission SAEF and caused SAEV at the Kalchinskoye deposit (the Western Siberia) are presented. Analysis of the results is used as a criterion of oil-saturated reservoirs identification. The results of the comparative analysis of SAEL with the results of nuclear and electrical logging methods applied to identify fluid-saturated reservoirs are presented.
Keywords: acoustic emission; seismic-acoustic emission logging; core; formation-reservoir; acoustic effect; porous saturated medium; complex interpretation; oil fields; well.
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UDC 622.279 DOI: 10.30713/0207-2351-2018-3-50-55
TECHNOLOGICAL
APPROACHES TO WELLS OPERATION
Elena Vladimirovna Mandrik, Sergey Alexandrovich Melnikov, Alexander Alexandrovich Ploskov, Vladimir Igorevich Shulyatikov
LLC "Gazprom VNIIGAZ" 15, bld. 1, Proektiruemy proezd No 5537, Razvilka poselok, 142717, Leninsky district, Moscow region, Russian Federation, e-mail: Elena_Mandrik@bk.ru, S_Melnikov@vniigaz.gazprom.ru, ploskov86@yandex.ru, V_Shulyatikov@vniigaz.gazprom.ru
S.G. Pamuzhak
LLC "Gazprom dobycha Yamburg" 9, Geologorazvedchikov str., Novy Urengoy, 629306, Yamal-Nenets autonomous district, Russian Federation
At present, the most amount of gas continues to be extracted from the gas wells of the Cenomanian deposits, the operation of which is complicated by a number of factors (water-flooding, a formation failure, liquid freezing, etc.). To control these factors, various technical and technological solutions are used. To prevent self-pressurization of wells, the following new well operation technologies are worked out in the fields, ensuring removal of liquid from wells while maintaining (increasing) gas production rate and minimum pressure losses (concentric lift, plunger lift, gas injection in the annulus, replacement of tubing by a smaller diameter pipe). The researches were conducted to identify the specific features of wells operation of the fields of the Cenomanian gas deposits, located in the north of the Western Siberia, being at the final stage of development; to determine the criteria that influence the choice of the technologies to be applied; to substantiate the field of the technologies application; assessment of the criteria that limit the applicability of any technology. As a result, an algorithm of the technologies selection to be applied for gas wells operation at the latest stages of fields development to make reasonable decisions on wells reconstruction as well as a regulatory framework (STO Gazprom) for PJSC Gazprom to operate wells in complicated conditions are developed.
Keywords: the Cenomanian deposits; gas wells; selection algorithm; well operation technology; the final stage of a field development; well reconstruction.
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UDC 622.691.4.052.012 DOI: 10.30713/0207-2351-2018-3-56-59
EFFECT
OF GAS LEAKAGES THROUGH VALVE PLATES
Natiq Sabir Seidahmedov
Azerbaijan State Scientific and Research Institute of Occupational Safety and Health 108, Tabriz str., Baku, AZ1000, Republic of Azerbaijan, e-mail: n.natiq.az@mail.ru
The paper presents the results of the study carried out to reveal the effect of gas leakages through valve plates in a stationary gas flow in order to determine coefficients of the flow-rate and gas flow pressure. It is established that the grooves of the plates of the direct-flow valves have a serious effect on their operability.
Keywords: direct flow valve; tightness; piston compressors; gas; density; oil; grooves; output; cleaning; cylinder; plate.
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UDC 620.193/.197 DOI: 10.30713/0207-2351-2018-3-60-65
INVESTIGATION
OF CHEMICAL REAGENTS PROPERTIES
V.I. Pavluchenko, V.V. Chebotarev, À.À. Mugatabarova
Ufa State Petroleum Technological University 1, Kosmonavtov str., Ufa, 450062, Republic of Bashkortostan, Russian Federation, tel.: (347) 242-03-70, (347) 242-09-16, e-mail: vi1947@mail.ru, Mugatabarova@mail.ru
The object of the research are the communications of the reservoir pressure maintenance workshop, namely, gravity water conduits. During the investigation, the conditions of reducing the corrosion inhibitors effectiveness at a pumping station when utilizing the water of an oil field were studied. The research resulted in studying and fixing the reasons for the inhibitors efficiency decrease.as well as in selecting the dispersing additives or the chemical reagent compositions. The proposed compositions of chemical reagents have undergone laboratory tests.
Keywords: corrosion; inhibitor; water conduit; laboratory modeling.
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UDC 622.692.12 DOI: 10.30713/0207-2351-2018-3-66-70
INTEGRATED
SIMULATION AS A TOOL
Elizaveta Viktorovna Soboleva
LLC "LUKOIL−PERM" 62, Lenin str., Perm, 614000, Perm region, Russian Federation, e-mail: Lizi.89@inbox.ru
Roman Olegovich Mekhonoshin
"PermNIPIneft", a branch of LLC "LUKOIL−Engineering" in the city of Perm 29, Sovetskaya Armiya str., Perm, 614066, Russian Federation
The article presents the results of the integrated analysis carried out to find the relationship of Sukharev and Arkhangelsky fields. The analysis was carried out both in terms of a productive formation-reservoir energetics and technology (gathering facilities). Recommendations on the gathering facilities technical updating are proposed. Economic appraisal of the proposed activities was carried out. Thus, the application of the integrated model as an instrument of operational efficiency enhancement use shown.
Keywords: "intellectual" field; integrated analysis; integrated model; productive formation-reservoir; well; gathering facilities; economic appraisal.
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UDC 622.276:665.7(083.75) DOI: 10.30713/0207-2351-2018-3-71-74
ANALYSIS
OF NORMATIVE-TECHNICAL DOCUMENTATION REQUIREMENTS
V.A. Yasashin, E.A. Belova, A.S. Bolotokov
Gubkin Russian State Oil and Gas University (NRU) 65, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: yasashin@rambler.ru
A.M. Sychev
JSC "Transneft−Metrology" 16, bld.1, Dobrolyubov str., Moscow, 127254, Russian Federation
Normative and technical documents reflecting the qualitative characteristics of oil and oil products are analyzed. Basic standards with a short characteristic are given. The Federal Law ¹ 162 "Standardization in the Russian Federation" is discussed.
Keywords: normative-technical documentation; oil; oil products; quality control; standard.
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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY" |