RU94030573A - Method and device for bullet perforation of bore-holes - Google Patents

Method and device for bullet perforation of bore-holes

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Publication number
RU94030573A
RU94030573A RU94030573/03A RU94030573A RU94030573A RU 94030573 A RU94030573 A RU 94030573A RU 94030573/03 A RU94030573/03 A RU 94030573/03A RU 94030573 A RU94030573 A RU 94030573A RU 94030573 A RU94030573 A RU 94030573A
Authority
RU
Russia
Prior art keywords
bullets
charge
powder
igniter
bullet
Prior art date
Application number
RU94030573/03A
Other languages
Russian (ru)
Other versions
RU2076201C1 (en
Inventor
В.А. Дубинин
Е.П. Романов
Original Assignee
Акционерная ассоциация "Алтанта"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Акционерная ассоциация "Алтанта" filed Critical Акционерная ассоциация "Алтанта"
Priority to RU94030573A priority Critical patent/RU2076201C1/en
Application granted granted Critical
Publication of RU2076201C1 publication Critical patent/RU2076201C1/en
Publication of RU94030573A publication Critical patent/RU94030573A/en

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  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Gas Burners (AREA)

Abstract

FIELD: oil and gas production industry. SUBSTANCE: bullet perforation method allows for improving quality of opening of productive reservoirs due to preventing undesirable crushing of cement stone when firing bullets. According to method, at selected points of creating perforated passages in bore-hole, prior to firing bullets, tube is subjected to jet piercing by high-temperature gas jet. Device for realization of aforesaid method has body with vertical curved barrels for directing bullets. Bases of barrels with bullets are connected with powder charges. Installed ahead of powder charge coaxially with it and parallel to barrels is gas generator with solid fuel charge, nozzles, ignition cartridge, igniter. Gas generator is connected through flame passage with powder charge and functions as igniter of this charge. Device operates as follows. Ignition cartridge makes igniter operating to initiate burning of solid fuel charge of gas generator. Thus formed high-temperature gas jet burns through casing tube. Products of burning of residual solid fuel charge find their way to powder charge through flame passage, ignite it and due to expansion of powder gases, bullets are fired which initially moving in vertical, then in curved part of barrel enter pierced holes in casing tube and then through cement layer they penetrate into rock. This method protects casing tube and cement ring from deformation, cracking, and saves inner surface of casing tube from burrs around bullet made hole, adds to length of passage punctured by bullet for opening of reservoir which increases output of well. EFFECT: high efficiency. 2 cl, 2 dwg

Claims (1)

Изобретение относится к добыче жидких или газообразных текучих сред из буровых скважин, в частности к перфорированию их с помощью метаемых пуль для вскрытия пластов. Цель: разработка такого способа пулевой перфорации и такого устройства, которые позволили бы повысить качество вскрытия продуктивных пластов за счет предотвращения несанкционированного разрушения цементного камня при простреле пулями. Предложенный способ перфорации скважин заключается в следующем: в намеченных точках формирования перфорационных каналов в скважине перед метанием пуль производят прожигание трубы высокотемпературной струей газов. Устройство, с помощью которого может быть реализован предложенный способ, содержит корпус, с вертикально-криволинейными стволами для направленного движения пуль. Основания стволов с пулями соединены с пороховым зарядом. Перед пороховым зарядом соосно с ним и параллельно стволам установлен газогенератор с твердотопливным зарядом, соплами , пиропатроном, воспламенителем. Газогенератор огнепроводным каналом соединен с пороховым зарядом - и является средством воспламенения этого заряда. Устройство, осуществляющее предложенный способ, работает следующим образом. От пиропатрона срабатывает воспламенитель, который способствует загоранию заряда твердого топлива газогенератора. Образовавшаяся высокотемпературная струя газов через сопла прожигает обсадную трубу. Продукты сгорания остатков твердотопливного заряда через огнепроводный канал проникают к пороховому заряду, зажигают его, и от расширяющихся пороховых газов происходит выстреливание пуль, которые, двигаясь сначала по вертикальной, а затем по криволинейной части ствола, попадают в прожженные отверстия обсадной трубы, а затем через цементный слой в породу. Реализация предложенного способа предложенной конструкцией позволяет предохранить обсадную трубу и цементное кольцо от деформации, образования трещин, предохранить внутреннюю поверхность обсадной трубы от заусенцев вокруг пулевого отверстия, способствует увеличению длины канала, пробиваемого пулей для вскрытия пласта, что повышает дебит скважины. Все это повышает качество вскрытия продуктивных пластов, а следовательно, повышается эффективность добычи нефти.The invention relates to the production of liquid or gaseous fluids from boreholes, in particular, to perforate them using throwing bullets for opening reservoirs. Purpose: the development of such a method of bullet perforation and such a device that would improve the quality of the opening of productive formations by preventing unauthorized destruction of cement stone when shot by bullets. The proposed method of perforating wells is as follows: at the designated points of formation of perforation channels in the well before throwing bullets, the pipe is burned with a high-temperature gas stream. A device with which the proposed method can be implemented comprises a housing with vertically curved trunks for directional movement of bullets. The base of the trunks with bullets connected to a powder charge. In front of the powder charge, a gas generator with a solid fuel charge, nozzles, a squib, an igniter is installed coaxially with it and parallel to the barrels. The gas generator is connected to the powder charge by a fire channel and is a means of igniting this charge. A device that implements the proposed method works as follows. An igniter is activated from the igniter, which contributes to ignition of the solid fuel charge of the gas generator. The resulting high-temperature gas stream through the nozzles burns the casing. The combustion products of the residues of the solid fuel charge penetrate the powder charge through the fire channel, ignite it, and bullets are fired from expanding powder gases, which, moving first along the vertical and then along the curved part of the barrel, enter the burnt holes of the casing, and then through the cement layer in the rock. Implementation of the proposed method by the proposed design allows to protect the casing and cement ring from deformation, formation of cracks, to protect the inner surface of the casing from burrs around the bullet hole, helps to increase the length of the channel pierced by the bullet for opening the formation, which increases the flow rate of the well. All this improves the quality of the opening of reservoirs, and consequently, increases the efficiency of oil production.
RU94030573A 1994-08-17 1994-08-17 Method of gun perforation of wells and device for its embodiment RU2076201C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94030573A RU2076201C1 (en) 1994-08-17 1994-08-17 Method of gun perforation of wells and device for its embodiment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94030573A RU2076201C1 (en) 1994-08-17 1994-08-17 Method of gun perforation of wells and device for its embodiment

Publications (2)

Publication Number Publication Date
RU2076201C1 RU2076201C1 (en) 1997-03-27
RU94030573A true RU94030573A (en) 1997-05-20

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ID=20159813

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94030573A RU2076201C1 (en) 1994-08-17 1994-08-17 Method of gun perforation of wells and device for its embodiment

Country Status (1)

Country Link
RU (1) RU2076201C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109306857A (en) * 2017-07-28 2019-02-05 中国石油天然气股份有限公司 Selective layering perforation oil testing tubular column and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109306857A (en) * 2017-07-28 2019-02-05 中国石油天然气股份有限公司 Selective layering perforation oil testing tubular column and method
CN109306857B (en) * 2017-07-28 2022-02-01 中国石油天然气股份有限公司 Selective layering perforation oil testing tubular column and method

Also Published As

Publication number Publication date
RU2076201C1 (en) 1997-03-27

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