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ISSN 0130-3872 Scientific-technical journal OF OIL AND GAS WELLS ON LAND AND SEA published since 1993 January 2015 ¹ 1 12 issues per year
CONTENÒS |
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DRILLING TECHNIQUE AND TECHNOLOGY |
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EQUIPMENT AND TOOLS |
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DRILLING MUDS |
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Iskenderzade A.E. Development and research of polymer emulsion drilling mud (p. 33-36) |
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WELL COMPLETION |
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Information on the articles (p. 44-48) |
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Information on the articles |
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Development of technical and technological RECOMMENDATIONS on QUALITY ENHANCEMENT OF project trajectory PERFORMANCE OF DIRECTIONAL WELLS (p. 4)
Svetlana Alexandrovna Keyn, Vladislav Valerievich Trokhov
Ukhta State Technical University 9, Pervomayskaya str., 169300, Ukhta, Republic of Komi, Russian Federation, phone:(8216) 77-44-79
The article discusses problems relating to development of technical and technological recommendations on quality enhancement of project trajectory performance of directional wells, including the area of stabilization while drilling by combination of sliding and rotating of downhole motor-diverter by the rotor. The use of neural network technology to analyze and find the optimal conditions for providing directional control in the assigned corridor is proposed. Requirements for the allowable clearances between the diameters of the bit and the engine and for the optimal ratio of the lower section length to the upper section length of the downhole motor-diverter to get stable operational parameters of assembly of the low part of a drill-pipe string are justified.
Key words: project trajectory performance; combination of sliding and rotation of the motor rotor-diverter by rotor; well directional control; provision of stable operational parameters; parameters of assembly of the low part of a drill-pipe string.
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SCIENTIFIC-METHODICAL GROUNDS OF NON-STATIONARY IDENTIFICATION OF A GEOLOGICAL SECTION WHILE DRILLING DEEP WELLS IN COMPLICATED GEOLOGICAL-TECHNICAL CONDITIONS (p. 8)
Samir Masudovich Mammadov
«New Tech Services, Ltd.» 31G, Shabolovka str., 115162, Moscow, Russian Federation, phone: +7(985) 771-72052, e-mail: smammadov@nt-serv.com
Yaroslav Vladimirovich Rukavitsyn
CJSC «Geospectr» 51-1-1, Vavilov str., 117296, Moscow, Russian Federation, phone: +7(910) 429-79-84, e-mail: yaros3000@yandex.ru
Alexey Gennadievich Zhuravlev
«RF State Expert Evaluation Department» 12/5, Furkasovsky per., 101990, Moscow, Russian Federation, phone: +7(926)218-28-26, e-mail: 30alex@mail.ru
The article presents some methodical specific features of geological section prediction in the projects of construction of deep oil and gas wells with account of «borehole – mass of rock» non-stationary system. Algorithms that predict zones of complications and emergencies on the basis of correlation analysis of time-dependent risks are discussed. The results of the search of optimal parameters of mechanical deepening of the borehole and parameters of the circulation system in terms of opening transient zones of a geological section are submitted.
Key words: design of wells; risks minimization; non-stationary state; differential pressure; mechanical drilling speed.
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RESEARCH AND DEVELOPMENT OF FOAM AGENTS TO REMOVE LIQUID OUT OF WELLS (WITH THE EXAMPLE OF KSCHUKSKOE FIELD) (p. 13)
Ramiz Alievich Gasumov, Irada Ilgam Shikhalieva
JSC «SevKavNIPIgaz» 419, Lenin str., 355035, Stavropol, Russian Federation, phone: (8652)35-96-75, 35-94-11, 56-71-09, e-mail: R.Gasumov@yandekx.ru, svnipigz@gazprom.ru
The entry of a large number of fields in the final stage of operation is characterized by formation pressure reduction, gas production decrease due to increase of formation liquid inflow and its gradual accumulation at the bottom of a well. Salvation of the problem as well as maintenance of operational stability of watering wells require application of different physical and physical-chemical methods aimed at accumulated liquid removal.
Key words: water-flooding; field; operation.
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LONG-DISTANCE TRANSPORT OF OIL AND GAS MIXTURE WITH ITS HEATING (p. 17)
Georgy Andrianovich Bulychev Vladimir Alexandrovich Perfilov Georgy Raisovich Bulychev
Volgograd State Architecture and Civil Engineering University 1, Akademicheskaya str., 400074, Volgograd, Russian Federation
Felix Georgievich Bulychev
«LUKOIL-Inform, Ltd.» 11, Sretensky boulevard, 101000, Moscow, Russian Federation
Dmitry Vladimirovich Oreshkin
Moscow State University of Civil Engineering 26, Yaroslavskoe shosse, 129337, Moscow, Russian Federation, e-mail: dmitrii@mail.ru
«PT-P/D» type heaters of gas-liquid medium, simple in design and in preparation for fuel burning are considered in the present article.
Key words: gas-liquid heater; ejector; oil transportation.
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EFFICIENCY ENHANCEMENT OF JOINT PUMPING OF HIGH-VISCOUS OIL AND GAS (p. 22)
Georgy Andrianovich Bulychev Vladimir Alexandrovich Perfilov Georgy Raisovich Bulychev
Volgograd State Architecture and Civil Engineering University 1, Akademicheskaya str., 400074, Volgograd, Russian Federation
Felix Georgievich Bulychev
«LUKOIL-Inform, Ltd.» 11, Sretensky boulevard, 101000, Moscow, Russian Federation
Dmitry Vladimirovich Oreshkin
Moscow State University of Civil Engineering 26, Yaroslavskoe shosse, 129337, Moscow, Russian Federation, e-mail: dmitrii@mail.ru
The article considers some technique of oil pipelines efficiency enhancement and energy saving by means of oil saturation by gas.
Key words: gas saturation; pipeline; high-viscous oil.
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PERFECTION OF GEOMETRY OF TEETH CUTTING STRUCTURES OF DRIVEN ROWS OF ROLLING-CUTTER DRILL BITS (p. 25)
Dmitry Yurievich Serikov
I. Gubkin Russian State University of Oil and Gas 65, Leninsky prosp., 119991, Moscow, Russian Federation, phone./fax: (915) 372-77-79, e-mail: serrico@rambler.ru
The analysis of operation of teeth cutting structures of rolling-cutter drill bits in partial braking and slipping modes is carried out. Structural of geometry of teeth cutting structures of driven rows was developed on the basis of the above-said analysis. The structural scheme allows increasing efficiency of well bottom coverage by teeth elements, thus increasing drilling mechanical rate and footage per bit.
Key words: rolling-cutter drill bit; geometry of cutting structures; slipping; partial braking.
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THE STUDY OF STRESSES AND DEFORMATIONS OCCURING DURING WORK OF A DRILL-PIPE STRING ASSEMBLY WITH BOTTOM-HOLE SCREW STEERABLE MOTOR (p. 29)
Eugeny Glebovich Grechin, Eduard Vitalyevich Pashkov
Tyumen State Oil and Gas University 38, Volodarskogo str., 625000, Tyumen, Russian Federation, phone/fax: (3452) 25-69-77, 25-69-70, e-mail: ev.grechin@yandex.ru
Stressed-deformed state of a drill-pipe string assembly with a bottom-hole screw steerable motor was studied. The maximum stresses occur in curved sub while transition from sliding mode to rotational mode of a drill-pipe casing string. Calculations witnessed the fact that a well’s diameter increase leads to reduction of load on the elements of a drill-pipe string assembly incase of small angles in curved sub. If the angle of the curved sub is more than 1,5 degrees they will change slightly. Cyclic law of stresses change in the curved sub was identified. During a drill-pipe string rotation maximum stresses periodically move from the curved unit to the steerable motor housing. When the angle of the curved sub is more than 1.5 degrees pressures can remain high without their cyclical changes.
Key words: drill pipe string assembly; steerable bottom-hole motor; curved sub; stressed-deformed state; deflection of assembly; stress.
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DEVELOPMENT AND RESEARCH OF POLYMER EMULSION DRILLING MUD (p. 33)
Aishan Elchin Iskendersade
«Neftegas» Scientific-Research Project Institute 88à, Zàrdàbi prosp., AZ1012, Baku, Republic of Azerbaijan, phone: +994552141003, e-mail: ay-shan@bk.ru
The effect of filtrate of drill mud solution on reservoir properties is a complicated physical-chemical process. Penetrating into the reservoir, drilling mud and its filtrate lead to changes in the pore space structure and the near-wellbore zone permeability. Additionally, the chemicals contained in the filtrate contribute to the rock of hydro-philicity increase and while interacting with productive horizon substances they can form insoluble precipitates that lead to the pore channels clogging. Preservation of the natural reservoir properties of productive layers can be implemented through creation of tight, thin, dense filter cake. Thus, for this purpose the new composition of polymer emulsion drilling mud is developed which contains a minimum content of solid phase, based on bentonite clay, polymer-stabilizer, an ionic surfactant, a surfactant-bactericide-inhibitor and fresh water To research the filtration properties of the newly developed polymer-emulsion drilling mud several experimental studies of plugging and drilling solutions, produced by OFITE, were conducted on the permeability tester. The developed drilling fluid was also examined under various temperatures. The research carried out at temperatures of 20...80 °C witnessed the fact that temperature factor increase does not essentially affect the rheological properties of the system under study.
Key words: drilling fluid; polymer; emulsifier; water yield; viscosity.
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CONTEMPORARY TECHNOLOGICAL FLUIDS FOR WELL COMPLETION AND WORK-OVER. Part 1 (p. 36)
Viktor Ivanovich Krylov
Gubkin Russian State University of Oil and Gas 65, Leninsky prosp., 119991, Moscow, Russian Federation, phone: (495) 315-45-66
Vyacheslav Vitalevich Kretsul
Schlumberger 16a, bld.3, Leningradsky prosp., 125171, Moscow, Russian Federation, phone: +7 495 935 82 00, fax: +7 495 935 87 80, e-mail: vkretsoul@slb.com
Sergey Viktorovich Medentsev
M-I SWACO, A Schlumberger company 16a, bld.3, Leningradsky prosp., 125171, Moscow, Russian Federation, phone: (495) 411-80-90
The article considers contemporary technological liquids used for qualitative opening of productive layers and wells work-over. Some examples of using contemporary compositions (liquids on hydrocarbon basis, aphrons technology, bio-polymer compositions, liquids, forming oleophilic filtration cake) at the fields of Russia in various geological-technical conditions are presented. Solid phase effect, including drilling slurry, on technological liquids properties as well as on quality of productive layers opening is discussed.
Key words: well completion; liquids for primary opening of a productive layer; biopolymers, filtration cake.
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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY" |