8 research outputs found

    Modeling pellet impact drilling process

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    The paper describes pellet impact drilling which could be used to increase the drilling speed and the rate of penetration when drilling hard rocks. Pellet impact drilling implies rock destruction by metal pellets with high kinetic energy in the immediate vicinity of the earth formation encountered. The pellets are circulated in the bottom hole by a high velocity fluid jet, which is the principle component of the ejector pellet impact drill bit. The experiments conducted has allowed modeling the process of pellet impact drilling, which creates the scientific and methodological basis for engineering design of drilling operations under different geo-technical conditions

    Modeling pellet impact drilling process

    Get PDF
    The paper describes pellet impact drilling which could be used to increase the drilling speed and the rate of penetration when drilling hard rocks. Pellet impact drilling implies rock destruction by metal pellets with high kinetic energy in the immediate vicinity of the earth formation encountered. The pellets are circulated in the bottom hole by a high velocity fluid jet, which is the principle component of the ejector pellet impact drill bit. The experiments conducted has allowed modeling the process of pellet impact drilling, which creates the scientific and methodological basis for engineering design of drilling operations under different geo-technical conditions

    Methods to ensure optimal off-bottom and drill bit distance under pellet impact drilling

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    The paper describes pellet impact drilling which could be used to increase the drilling speed and the rate of penetration when drilling hard rock for various purposes. Pellet impact drilling implies rock destruction by metal pellets with high kinetic energy in the immediate vicinity of the earth formation encountered. The pellets are circulated in the bottom hole by a high velocity fluid jet, which is the principle component of the ejector pellet impact drill bit. The paper presents the survey of methods ensuring an optimal off-bottom and a drill bit distance. The analysis of methods shows that the issue is topical and requires further research

    Arresting and supplying apparatus for increasing pellet impact drilling speed per run

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    The paper describes pellet impact drilling which might be used to increase the drilling rate and the penetration rate of hard and tough rock drilling. Pellet impact drilling implies rock destruction by metal pellets having high kinetic energy in the immediate vicinity of the earth formation encountered. The pellets are recirculated in the bottom of the bore hole by a high velocity fluid jet, which is the principle component of the ejector pellet impact drill bit. The arresting and supplying apparatus is supposed to increase speed per run in pellet impact drilling, as it not only replenishes the pellets but also supplies and then picks up the pellets from the bottom hole. The paper presents the design of the pellet-supplying component which ensures a portion of pellets supply to the bottom hole

    Analysis of oil and gas well casing designs in order to identify promising areas for further research

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    ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ. Π‘ ΠΊΠ°ΠΆΠ΄Ρ‹ΠΌ Π³ΠΎΠ΄ΠΎΠΌ, Π²Π²ΠΈΠ΄Ρƒ истощСния лСгкодоступных запасов ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ², Π²ΠΎΠ·Π½ΠΈΠΊΠ°Π΅Ρ‚ ΠΏΠΎΡ‚Ρ€Π΅Π±Π½ΠΎΡΡ‚ΡŒ Π² ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΠΈ Ρ‚Π΅ΠΌΠΏΠΎΠ² Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ мСстороТдСний, располоТСнных Π² слоТных Π³ΠΎΡ€Π½ΠΎ-гСологичСских условиях. Π‘Ρ‚Ρ€ΠΎΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²ΠΎ ΠΈ эксплуатация скваТин Π² слоТных гСологичСских условиях часто ΡΠΎΠΏΡ€ΠΎΠ²ΠΎΠΆΠ΄Π°ΡŽΡ‚ΡΡ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌΠΈ ослоТнСниями ΠΈ авариями, Ρ‚Π°ΠΊΠΈΠΌΠΈ ΠΊΠ°ΠΊ Ρ„Π»ΡŽΠΈΠ΄ΠΎΠΏΡ€ΠΎΡΠ²Π»Π΅Π½ΠΈΡ, ΠΎΡ‚ΠΊΡ€Ρ‹Ρ‚Ρ‹Π΅ Ρ„ΠΎΠ½Ρ‚Π°Π½Ρ‹, Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠ΅ ΠΌΠ΅ΠΆΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹Ρ… Π΄Π°Π²Π»Π΅Π½ΠΈΠΉ, Π½Π΅Π³Π΅Ρ€ΠΌΠ΅Ρ‚ΠΈΡ‡Π½ΠΎΡΡ‚ΡŒ обсадной ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹, ΠΏΡ€ΠΎΡ‚Π°ΠΈΠ²Π°Π½ΠΈΠ΅ ΠΈ ΠΎΠ±Ρ€ΡƒΡˆΠ΅Π½ΠΈΠ΅ ΠΌΠ΅Ρ€Π·Π»Ρ‹Ρ… ΠΏΠΎΡ€ΠΎΠ΄ Π² ΠΎΠΊΠΎΠ»ΠΎΡΡ‚Π²ΠΎΠ»ΡŒΠ½ΠΎΠΌ пространствС скваТин ΠΈ Ρ‚. Π΄. ВсС это ΠΏΡ€ΠΈΠ²ΠΎΠ΄ΠΈΡ‚ ΠΊ Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΌΡƒ ΡƒΠ²Π΅Π»ΠΈΡ‡Π΅Π½ΠΈΡŽ стоимости ΡΡ‚Ρ€ΠΎΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²Π° скваТин, Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΊ росту Π·Π°Ρ‚Ρ€Π°Ρ‚ Π½Π° ΠΈΡ… содСрТаниС ΠΈ ΡΠΊΡΠΏΠ»ΡƒΠ°Ρ‚Π°Ρ†ΠΈΡŽ. ΠŸΡ€ΠΈ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠΈ скваТин Π½Π° мСстороТдСниях со слоТными Π³ΠΎΡ€Π½ΠΎ-гСологичСскими условиями особоС Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ удСляСтся конструкции скваТины Π²Π²ΠΈΠ΄Ρƒ Ρ‚ΠΎΠ³ΠΎ, Ρ‡Ρ‚ΠΎ ΠΏΠΎΠΌΠΈΠΌΠΎ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… финансовых Π·Π°Ρ‚Ρ€Π°Ρ‚ Π½Π΅ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Ρ‹Π±ΠΎΡ€ конструкции ΠΌΠΎΠΆΠ΅Ρ‚ привСсти ΠΊ ΠΏΠΎΠ»Π½ΠΎΠΉ ΠΏΠΎΡ‚Π΅Ρ€Π΅ скваТины. ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½Ρ‹ΠΌ вопросом являСтся Π²Ρ‹Π±ΠΎΡ€ конструкции скваТин, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‰Π΅ΠΉ Π΄ΠΎΡΡ‚ΠΈΡ‡ΡŒ высоких экономичСских ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ ΠΏΡ€ΠΈ отсутствии ΡΠΎΠΏΡƒΡ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… ослоТнСний ΠΏΡ€ΠΈ ΡΡ‚Ρ€ΠΎΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²Π΅ ΠΈ эксплуатации нСфтяных ΠΈ Π³Π°Π·ΠΎΠ²Ρ‹Ρ… скваТин Π² слоТных Π³ΠΎΡ€Π½ΠΎ-гСологичСских условиях. ЦСль: ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΠΈΡ‚ΡŒ пСрспСктивныС направлСния ΡΠΎΠ²Π΅Ρ€ΡˆΠ΅Π½ΡΡ‚Π²ΠΎΠ²Π°Π½ΠΈΡ конструкций нСфтяных ΠΈ Π³Π°Π·ΠΎΠ²Ρ‹Ρ… скваТин ΠΈ обсадных ΠΊΠΎΠ»ΠΎΠ½Π½. ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹: ΠΎΡ†Π΅Π½ΠΊΠ° ΠΈ Π°Π½Π°Π»ΠΈΠ· Π΄Π΅ΠΉΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… конструкций нСфтяных ΠΈ Π³Π°Π·ΠΎΠ²Ρ‹Ρ… скваТин ΠΈ обсадных ΠΊΠΎΠ»ΠΎΠ½Π½ Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ дальнСйшСй ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΈ примСнимости ΠΊ ΡΡ‚Ρ€ΠΎΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²Ρƒ скваТин Π² слоТных Π³ΠΎΡ€Π½ΠΎ-гСологичСских условиях. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Авторами Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Ρ‹ классификации конструкций нСфтяных ΠΈ Π³Π°Π·ΠΎΠ²Ρ‹Ρ… скваТин ΠΈ обсадных ΠΊΠΎΠ»ΠΎΠ½Π½. Π’Ρ‹Π΄Π΅Π»Π΅Π½Ρ‹ основныС классификационныС ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΈ для конструкций нСфтяных ΠΈ Π³Π°Π·ΠΎΠ²Ρ‹Ρ… скваТин ΠΈ обсадных ΠΊΠΎΠ»ΠΎΠ½Π½. ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Ρ‹ пСрспСктивныС направлСния Π΄Π°Π»ΡŒΠ½Π΅ΠΉΡˆΠΈΡ… исслСдований.The relevance. Every year, the demand for increasing the pace of developing deposits located in complex subsurface conditions is becoming more and more urgent due to the depletion of soft hydrocarbon reserves. The construction and operation of wells in complex subsurface conditions are often accompanied by various complications and accidents, such as fluid kicks, blowouts, occurrence of intercasing pressures, leakage of the casing, thawing and collapse of permafrost in the borehole space of wells, etc. All this leads to a significant increasing of well construction costs, as well as to the increase in the costs of their maintenance and operation. When designing wells in fields with complex subsurface conditions, special attention is paid to the well casing design, due to the fact that in addition to ancillary financial costs, the wrong choice of well casing design can lead to loss of the well. An urgent issue is the choice of well casing design that allows achieving high economic performance in the absence of concomitant complications during the construction and operation of oil and gas wells in complex subsurface conditions. The main aim: identify promising areas for improving oil and gas well casing designs and well casings. Methods: evaluation and analysis of existing oil and gas well casing designs and well casings for the possibility of further optimization and applicability to the construction of wells in complex subsurface conditions. Results. The authors have developed classifications of oil and gas well casing designs and well casings. The main classification features for the oil and gas well casing designs and well casings were highlighted. Promising areas of further research were identified

    Using unsupervised machine learning algorithm to prevent the sticking of drilling and casing strings

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    ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ. Π‘ ΠΊΠ°ΠΆΠ΄Ρ‹ΠΌ Π³ΠΎΠ΄ΠΎΠΌ истощСниС лСгкодоступных запасов ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ² опрСдСляСт Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎΡΡ‚ΡŒ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ мСстороТдСний, Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ·ΡƒΡŽΡ‰ΠΈΡ…ΡΡ слоТными Π³ΠΎΡ€Π½ΠΎ-гСологичСскими условиями. Π‘Ρ‚Ρ€ΠΎΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²ΠΎ скваТин Π² Π΄Π°Π½Π½Ρ‹Ρ… условиях часто сопровоТдаСтся Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌΠΈ ослоТнСниями ΠΈ авариями. ΠŸΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½Ρ‹Π΅ риски ΠΈΡ… возникновСния обусловлСны услоТнСниСм конструкции скваТины, Ρ‚Ρ€Π°Π΅ΠΊΡ‚ΠΎΡ€ΠΈΠΈ ствола, Π° Ρ‚Π°ΠΊΠΆΠ΅ нСдостаточно достовСрными Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΠΎ Π³ΠΎΡ€Π½ΠΎ-гСологичСских условиях бурСния. ΠŸΡ€ΠΈΡ…Π²Π°Ρ‚ Π±ΡƒΡ€ΠΈΠ»ΡŒΠ½ΠΎΠΉ ΠΈΠ»ΠΈ обсадной ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹ являСтся ΠΎΠ΄Π½ΠΎΠΉ ΠΈΠ· самых слоТных Π°Π²Π°Ρ€ΠΈΠΉ, которая ΠΎΠΊΠ°Π·Ρ‹Π²Π°Π΅Ρ‚ сущСствСнноС влияниС Π½Π° ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ бурСния ΠΈ ΡΡ‚ΠΎΠΈΠΌΠΎΡΡ‚ΡŒ ΡΡ‚Ρ€ΠΎΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²Π° скваТины. Π—Π°Ρ‡Π°ΡΡ‚ΡƒΡŽ ΠΏΡ€ΠΈ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠΈ ΠΏΡ€ΠΈΡ…Π²Π°Ρ‚Π° трСбуСтся ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ дорогостоящих мСроприятий ΠΏΠΎ Π΅Π³ΠΎ Π»ΠΈΠΊΠ²ΠΈΠ΄Π°Ρ†ΠΈΠΈ. Π’ настоящСС врСмя ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΈ ΠΏΡ€ΠΈΡ…Π²Π°Ρ‚Π° ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΡΡŽΡ‚ΡΡ ΠΏΠΎ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π°ΠΌ бурСния ΠΈΠ½ΠΆΠ΅Π½Π΅Ρ€Π½Ρ‹ΠΌ составом, ΠΎΠ΄Π½Π°ΠΊΠΎ Π²Π²ΠΈΠ΄Ρƒ особСнностСй чСловСчСского восприятия ΠΈ смСнного Ρ€Π΅ΠΆΠΈΠΌΠ° Ρ€Π°Π±ΠΎΡ‚Ρ‹ это происходит нСсвоСврСмСнно. НСдостатки ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΠΎΠ³ΠΎ Π² настоящий ΠΌΠΎΠΌΠ΅Π½Ρ‚ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄Π° ΠΏΡ€Π΅Π΄ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΠΈΠ»ΠΈ использованиС Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΎΠ² машинного обучСния. Π˜Π½Ρ‚Π΅Π»Π»Π΅ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½Π°Ρ систСма ΠΌΠΎΠΆΠ΅Ρ‚ автоматичСски Π°Π½Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Ρ‚Π΅Π½Π΄Π΅Π½Ρ†ΠΈΠΈ измСнСния ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² бурСния, ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠΈΠ²Π°Ρ‚ΡŒ Π°Π½ΠΎΠΌΠ°Π»ΠΈΠΈ Π² Ρ€Π΅Π°Π»ΡŒΠ½ΠΎΠΌ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ, Π·Π°Π±Π»Π°Π³ΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½ΠΎ ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Π²Π΅Ρ€ΠΎΡΡ‚Π½ΠΎΡΡ‚ΡŒ возникновСния Π°Π²Π°Ρ€ΠΈΠΈ ΠΈ ΠΏΡ€Π΅Π΄ΡƒΠΏΡ€Π΅ΠΆΠ΄Π°Ρ‚ΡŒ ΠΈΠ½ΠΆΠ΅Π½Π΅Ρ€Π° ΠΏΠΎ Π±ΡƒΡ€Π΅Π½ΠΈΡŽ Π½Π° Ρ€Π°Π½Π½Π΅ΠΉ стадии, Ρ‡Ρ‚ΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ‚ Ρ€Π΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Ρ‚ΡŒ ΠΏΡ€Π΅Π²Π΅Π½Ρ‚ΠΈΠ²Π½Ρ‹Π΅ мСроприятия Π΄ΠΎ Ρ‚ΠΎΠ³ΠΎ, ΠΊΠ°ΠΊ ΠΊΠΎΠ»ΠΎΠ½Π½Π° Π±ΡƒΠ΄Π΅Ρ‚ ΠΏΡ€ΠΈΡ…Π²Π°Ρ‡Π΅Π½Π°. ЦСль: созданиС Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠ°, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‰Π΅Π³ΠΎ ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Π²Π΅Ρ€ΠΎΡΡ‚Π½ΠΎΡΡ‚ΡŒ возникновСния ΠΏΡ€ΠΈΡ…Π²Π°Ρ‚Π° Π±ΡƒΡ€ΠΈΠ»ΡŒΠ½ΠΎΠΉ ΠΈΠ»ΠΈ обсадной ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹ Π² процСссС бурСния скваТины Π½Π° основании Π°Π½Π°Π»ΠΈΠ·Π° Π΄Π°Π½Π½Ρ‹Ρ… Π³Π΅ΠΎΠ»ΠΎΠ³ΠΎ-тСхнологичСских исслСдований. ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹: Π°Π½Π°Π»ΠΈΠ· соврСмСнных достиТСний Π² области опрСдСлСния Π°Π½ΠΎΠΌΠ°Π»ΠΈΠΉ Π²ΠΎ Π²Ρ€Π΅ΠΌΠ΅Π½Π½Ρ‹Ρ… рядах ΠΏΡ€ΠΈ ΠΏΠΎΠΌΠΎΡ‰ΠΈ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΎΠ² машинного обучСния; созданиС Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠ° прогнозирования ΠΏΡ€ΠΈΡ…Π²Π°Ρ‚Π° Π½Π° языкС программирования Python с использованиСм Π±ΠΈΠ±Π»ΠΈΠΎΡ‚Π΅ΠΊ с ΠΎΡ‚ΠΊΡ€Ρ‹Ρ‚Ρ‹ΠΌ исходным ΠΊΠΎΠ΄ΠΎΠΌ. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Авторами Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌ прогнозирования ΠΏΡ€ΠΈΡ…Π²Π°Ρ‚Π°, ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π° ΠΎΡ†Π΅Π½ΠΊΠ° Π΅Π³ΠΎ эффСктивности Π½Π° тСстовой Π²Ρ‹Π±ΠΎΡ€ΠΊΠ΅, Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΌΠ°ΡΡˆΡ‚Π°Π±ΠΈΡ€ΡƒΠ΅ΠΌΠΎΡΡ‚ΡŒ Π½Π° ΠΏΡ€ΠΎΡ‡ΠΈΠ΅ Π°Π²Π°Ρ€ΠΈΠΈ ΠΈ ослоТнСния, Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡŽΡ‰ΠΈΠ΅ Π² процСссС бурСния. ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Ρ‹ пСрспСктивныС направлСния Π΄Π°Π»ΡŒΠ½Π΅ΠΉΡˆΠΈΡ… исслСдований.The relevance. Drilling failures and accidents will continue to attract attention in drilling for oil and gas as more complex wells are being drilled across depleted zones to reach deeper reservoir targets. Stuck pipe incident continue to be a major contributor to non-productive time in drilling operations for oil and gas. When a stuck pipe incident occurs, costly corrective actions may include fishing operations, sidetracking the hole, or completely having to drill a new well. Stuck pipe warning signs are often undetected early enough for the deployment of effective mitigation strategies due to human mistakes and crew changes during drilling operations. The unsupervised machine learning algorithm is programmed to automatically detect abnormalities in real-time drilling parameter trends and predict potential stuck pipes, communicate observations in the form of alerts to engineers in advance to allow proactive corrective actions. Early detection of a stuck pipe and mitigating the incident in real time not only help to prevent its occurrence, but also help in making informed decisions to the appropriate freeing mechanism to adopt if it occurs. The main aim: create the stuck pipe detection model which predicts failure probability during the well drilling using mud logging service data. Objects: multivariate-sensing time-series data of mud logging service. Methods: analysis of current anomaly detection techniques achievments in the field of using machine learning; developing the stuck pipe detection model with open-source Python frameworks. Results. The authors have developed stuck pipe detection model with HTM algorithm, evaluated performance with test dataset. Promising areas of further research were identified

    Developing recommendations for optimizing the design of the drilling bit for pellet impact drilling

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    ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ. НСсмотря Π½Π° Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΠ΅ Ρ€Π°Π·Π²ΠΈΡ‚ΠΈΠ΅ возобновляСмых источников энСргии, ископаСмоС Ρ‚ΠΎΠΏΠ»ΠΈΠ²ΠΎ всС Π΅Ρ‰Π΅ Π·Π°Π½ΠΈΠΌΠ°Π΅Ρ‚ Π»ΠΈΠ΄ΠΈΡ€ΡƒΡŽΡ‰ΡƒΡŽ ΠΏΠΎΠ·ΠΈΡ†ΠΈΡŽ срСди извСстных энСргорСсурсов. ΠŸΡ€ΠΈ этом, согласно ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·Π°ΠΌ, Π² блиТайшиС дСсятилСтия Россия останСтся ΠΎΠ΄Π½ΠΈΠΌ ΠΈΠ· ΠΈΡ… ΠΊΡ€ΡƒΠΏΠ½Π΅ΠΉΡˆΠΈΡ… ΠΌΠΈΡ€ΠΎΠ²Ρ‹Ρ… экспортСров. ΠŸΠΎΡΡ‚ΠΎΠΌΡƒ Π² нашСй странС всС Π±ΠΎΠ»Π΅Π΅ остро стоит вопрос ΠΏΠΎ ΡΠΎΡ…Ρ€Π°Π½Π΅Π½ΠΈΡŽ объСма Π΄ΠΎΠ±Ρ‹Ρ‡ΠΈ ΠΏΠΎΠ»Π΅Π·Π½Ρ‹Ρ… ископаСмых, Ρ‡Ρ‚ΠΎ Ρ‚Ρ€Π΅Π±ΡƒΠ΅Ρ‚ Ρ€Π°Π·Π²Π΅Π΄ΠΊΠΈ Π½ΠΎΠ²Ρ‹Ρ… мСстороТдСний, Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Π½ΠΎΠ²Ρ‹Ρ… Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΉ, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‰ΠΈΡ… ΠΎΡΡƒΡ‰Π΅ΡΡ‚Π²Π»ΡΡ‚ΡŒ Ρ€Π°Π±ΠΎΡ‚Ρ‹ Π² слоТных условиях. Одним ΠΈΠ· Ρ‚Π°ΠΊΠΈΡ… Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΉ ΠΌΠΎΠΆΠ΅Ρ‚ ΡΡ‚Π°Ρ‚ΡŒ ΡˆΠ°Ρ€ΠΎΡΡ‚Ρ€ΡƒΠΉΠ½ΠΎΠ΅ Π±ΡƒΡ€Π΅Π½ΠΈΠ΅. Над Ρ€Π°Π·Π²ΠΈΡ‚ΠΈΠ΅ΠΌ ΡˆΠ°Ρ€ΠΎΡΡ‚Ρ€ΡƒΠΉΠ½ΠΎΠ³ΠΎ бурСния Ρ€Π°Π±ΠΎΡ‚Π°Π»ΠΈ ряд исслСдоватСлСй. Π‘Ρ‹Π»ΠΎ ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΎ большоС количСство Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… снарядов для ΡˆΠ°Ρ€ΠΎΡΡ‚Ρ€ΡƒΠΉΠ½ΠΎΠ³ΠΎ бурСния. ΠŸΡ€ΠΈ этом Π΄ΠΎ сих ΠΏΠΎΡ€ Π½Π΅ сущСствуСт конструкции, принятой Π·Π° Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Ρ€Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΡƒΡŽ. ЦСль: Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Ρ€Π΅ΠΊΠΎΠΌΠ΅Π½Π΄Π°Ρ†ΠΈΠΉ ΠΊ конструкции снаряда для ΡˆΠ°Ρ€ΠΎΡΡ‚Ρ€ΡƒΠΉΠ½ΠΎΠ³ΠΎ бурСния, Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΠΏΠΎΠ»Π½ΠΎ ΠΎΡ‚Π²Π΅Ρ‡Π°ΡŽΡ‰Π΅Π³ΠΎ трСбованиям Π³Π΅ΠΎΠ»ΠΎΠ³ΠΎΡ€Π°Π·Π²Π΅Π΄ΠΎΡ‡Π½Ρ‹Ρ… ΠΈ Π³ΠΎΡ€Π½ΠΎΠ΄ΠΎΠ±Ρ‹Π²Π°ΡŽΡ‰ΠΈΡ… отраслСй ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½ΠΎΡΡ‚ΠΈ. ΠžΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠΌ исслСдования являСтся Π±ΡƒΡ€ΠΎΠ²ΠΎΠΉ снаряд для ΡˆΠ°Ρ€ΠΎΡΡ‚Ρ€ΡƒΠΉΠ½ΠΎΠ³ΠΎ бурСния. ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹: ΠΎΠ±Π·ΠΎΡ€ Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Π½Ρ‹Ρ… источников; систСматизация классификационных ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΎΠ² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… конструкций снарядов для ΡˆΠ°Ρ€ΠΎΡΡ‚Ρ€ΡƒΠΉΠ½ΠΎΠ³ΠΎ бурСния; Π°Π½Π°Π»ΠΈΠ· извСстных конструкций согласно Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½ΠΎΠΉ классификации. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. УстановлСно, Ρ‡Ρ‚ΠΎ наибольшая мСханичСская ΡΠΊΠΎΡ€ΠΎΡΡ‚ΡŒ бурСния ΡˆΠ°Ρ€ΠΎΡΡ‚Ρ€ΡƒΠΉΠ½Ρ‹ΠΌ способом Π±ΡƒΠ΄Π΅Ρ‚ Π΄ΠΎΡΡ‚ΠΈΠ³Π°Ρ‚ΡŒΡΡ ΠΏΡ€ΠΈ использовании снаряда, состоящСго ΠΈΠ· ΠΎΠ΄Π½ΠΎΠΉ ΠΊΠ°ΠΌΠ΅Ρ€Ρ‹ смСшСния цилиндричСской Ρ„ΠΎΡ€ΠΌΡ‹. ΠŸΡ€ΠΈ этом подъСм ΡˆΠ°Ρ€ΠΎΠ² Π²Ρ‹ΡˆΠ΅ впускных ΠΎΠΊΠΎΠ½ Π΄ΠΎΠ»ΠΆΠ΅Π½ Π±Ρ‹Ρ‚ΡŒ ΠΎΠ³Ρ€Π°Π½ΠΈΡ‡Π΅Π½ Π·Π°Π΄Π΅Ρ€ΠΆΠΈΠ²Π°ΡŽΡ‰ΠΈΠΌ устройством, Π° расстояниС ΠΌΠ΅ΠΆΠ΄Ρƒ снарядом ΠΈ Π·Π°Π±ΠΎΠ΅ΠΌ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΈΠ²Π°Ρ‚ΡŒ Π±Π΅Π· использования элСмСнтов, ΠΊΠΎΠ½Ρ‚Π°ΠΊΡ‚ΠΈΡ€ΡƒΡŽΡ‰ΠΈΡ… с Π·Π°Π±ΠΎΠ΅ΠΌ скваТины. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π° конструкция снаряда, ΡƒΠ΄ΠΎΠ²Π»Π΅Ρ‚Π²ΠΎΡ€ΡΡŽΡ‰Π΅Π³ΠΎ пСрСчислСнным критСриям.Relevance. Despite the active development of renewable energy sources, fossil fuels still occupy a leading position among the known energy resources. According to forecasts, in the coming decades Russia will remain one of the largest world exporters of fossil fuels. In Russia, the issue of maintaining the volume of extraction of minerals is becoming more and more acute. This requires the exploration of new deposits, as well as the development of new solutions that allow carrying out the work in difficult conditions. Pellet impact drilling can be one of such solutions. Some researchers have worked on the development of this drilling method. A large number of different pellet impact drilling bits have been proposed. At the same time, there is still no design accepted as the most rational one. Purpose: development of recommendations for the design of a drilling bit for pellet impact drilling, which most fully meets the requirements of geological exploration and mining industries. The object of the research is a drilling bit for pellet impact drilling. Methods: review of literary sources; systematization of the classification features of various designs of drilling bits for pellet impact drilling; analysis of previously developed designs according to the classification developed in this work. Results. It was found that the highest mechanical speed of pellet impact drilling is achieved when using a drilling bit consisting of one mixing chamber, cylindrical in shape, with a diffuser on the lower edge. In this case, the rise of the pellets above the inlet ports must be limited by a retarding device, and the distance between the drilling bit and the well bottom must be maintained without using the elements contacting with the well bottom. The paper proposes a design of the drilling bit which meets the mentioned criteria
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