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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 18. Отображено 18.
07-07-2004 дата публикации

射孔夹层枪防污染保护方法

Номер: CN0001156643C
Принадлежит:

... 本发明涉及一种油气井中应用的射孔夹层枪防污染保护方法。本发明方法是将夹层枪腔体的两端为密封设置,将射孔枪的导爆索与夹层枪的导爆索间使用隔离引爆方式引爆,是通过导爆索所产生的冲击波引爆。射孔枪与夹层枪间的密封装置由枪间接头、传爆装置组成;传爆装置安装于枪间接头的腔体中,传爆装置的上端与下端分别与射孔枪和夹层枪中的导爆索相连。本发明可使射孔枪爆炸后,地层或油气井内的液体无法进入夹层枪腔体中,重复使用夹层枪时不会对环境造成污染;其次,传爆出现断爆时,井内液体无法进入夹层枪腔体中,使金属隔板以后的射孔枪及夹层枪还可重新使用。 ...

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06-06-2012 дата публикации

Branching well seat suspension liner tube hydraulic booster expansion system

Номер: CN0101429850B
Принадлежит:

The invention relates to a seat suspension liner pipe hydraulic boosting expansion system for a branch well. The system is characterized in that the system comprises a sleeve, a liner pipe, an hole enlargement bit, a hydraulic cylinder, a piston rod, a boosting piston and a drill rod; the hole enlargement bit is arranged inside the liner pipe, and the bottom of the liner pipe is arranged inside the sleeve; the top and the bottom of the hydraulic cylinder are sealed respectively, and the bottom of the hydraulic cylinder is hermetically connected with the top of the liner pipe through a bolt pin; the piston rod is a hollow rod, and the bottom of the piston rod passes through the bottom of the hole enlargement bit and is fixed on the bottom of the hole enlargement bit; the top of the piston rod passes through the top of the boosting piston and is connected with the drill rod; the boosting piston is provided with a liquid outlet hole communicated with the center of the piston rod. The system ...

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13-05-2009 дата публикации

Design method for branching well seat suspension system expanding prick

Номер: CN0101429849A
Принадлежит:

The invention relates to a design method for a hole enlargement bit for a branch well seat suspension system. Through the plastic analysis of a sleeve and a liner pipe, a formula on the relationship between the stress of the liner pipe and the cone angle and bevel face area of the hole enlargement bit is obtained so as to provide a theoretical basis for the design of the head of the hole enlargement bit. The method also determines the relationship between the yield strengths of the materials forming the liner pipe and the sleeve through the plastic mechanics analysis of the liner pipe and the sleeve, thereby not only bringing about the convenient design of the cone angle and bevel face of the hole enlargement bit, but also providing the scientific and credible basis for the material selection of the liner pipe and the coordination between the liner pipe and the sleeve. The method can be widely applied not only to the design process of the hole enlargement bit for the branch well seat suspension ...

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12-03-2014 дата публикации

Novel stereo sand control screen

Номер: CN103628845A
Принадлежит:

The invention relates to a novel stereo sand control screen which comprises a central base tube, filters, a supporting tray and an overflowing protection sleeve, wherein a plurality of overflowing holes are formed in the wall of the central base tube and filled with the filters, the supporting tray is composed of a first tray body and a second tray body, and the first tray body and the second tray body are fixedly arranged at the two ends of the central base tube respectively; the overflowing protection sleeve is arranged outside the central base tube in a coaxial and sleeved mode, and the two ends of the overflowing protection sleeve are fixed on the central base tube through the first tray body and the second tray body respectively; a plurality of arched structures are arranged on the overflowing protection sleeve, and two screening grooves are formed by each arched structure and the overflowing protection sleeve. The novel stereo sand control screen is good in erosion resistance and ...

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12-02-2014 дата публикации

Well flushing process and device

Номер: CN103573200A
Принадлежит:

Disclosed is a two-way well flushing process and device. The welling flushing process comprises the following steps of assembling sand-prevention pipe strings; connecting a top packer and a setting tool and measuring pick up weight and slack off weight; performing circulatory function tests; running a drilling tool to a designed position; replacing completion fluid and gel-breaking liquid, breaking gel and flushing a well; throwing a ball, setting the top packer, examining sealing performance, performing release and shearing a ball seat; pulling out the feeding drilling tool and the inner pipe string. The two-way well flushing device comprises the feeding drilling tool and the sand-prevention pipe strings, the sand-prevention pipe strings are connected with the feeding drilling tool through the top packer and the setting tool and are fed into a shaft through the feeding drilling tool, the sand-prevention pipe strings comprises an outer pipe string and an inner pipe string, the outer pipe ...

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02-12-2015 дата публикации

Prevent drawing stopper

Номер: CN0204819317U
Принадлежит:

The utility model discloses a prevent drawing stopper relates to piston assembling technical field in the pit, can solve piston cylinder and the fricative problem of piston cylinder inner wall. Prevent drawing stopper wholly is cylindricly, and at the in -process of the piston cylinder of packing the piston into, this prevent drawing stopper passes the hole on the piston cylinder, and prevent drawing stopper's a terminal surface supports the piston outer wall for sealing washer on the piston keeps same compression state when the hole through on the piston casing wall, prevent drawing stopper's the terminal surface shape to living the piston outer wall is the same with the piston surface shape, the installation of mainly used piston.

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31-08-2005 дата публикации

Cryptomorphic acid conformity type completion fluid

Номер: CN0001660957A
Принадлежит:

A cryptomorphic acid chelated well-finishing liquid is proportionally prepared from clay stabilizer, inorganic salt, cryptomorphic acid, antibacterial agent and water. Its advantages are no pollution, no corrosion and high effect to improve and protect the oil bearing stratum.

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02-12-2015 дата публикации

Prevent torsional bumper shock absorber

Номер: CN0204828423U
Принадлежит:

The utility model provides a prevent torsional bumper shock absorber, including stiff end, spire and link, stiff end and link are fixed in respectively the both ends of spire, the spire includes the helical shape reed, the cross -section of reed is the quadrangle, the adoption cross -section is tetragonal reed, compares to be circular shape spring damper in traditional reed cross -section, and the twisting resistance is stronger, can guarantee consequently that instrument face very aligns with the brill in the pit.

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12-02-2014 дата публикации

Open hole oil production technology and separated pipe string

Номер: CN103573229A
Принадлежит:

Disclosed are an open hole oil production technology and a separated pipe string. The open hole oil production technology comprises the steps of drilling the reservoir well section; descending the separated pipe string; replacing the well completion fluid; taking the gel breaking or increase production measure; descending a production pipe string; performing well clearing and production. The separated pipe string is connected with the lower end of the production pipe string for open hole oil production and comprises an outer pipe string, an inner pipe string and an external packer; the outer pipe string comprises a screen pipe, a segmented sealing cylinder and a float shoe which are sequentially connected from top to bottom; the upper end of the screen pipe is connected with the lower end of the production pipe string through a top packer; the inner pipe string is arranged in the inner chamber of the outer pipe string; the top of the inner pipe string is connected with the top packer; the ...

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18-04-2012 дата публикации

Hermetic electric submersible pump production completion system capable of proceeding steel wire operation

Номер: CN0101338658B
Принадлежит:

The present invention relates to a closed electric submersible pump production well completion system which can process for steel wire operation. The closed electric submersible pump production well completion system comprises a production plug-in head, a closed electric submersible pump assembly, a blanking plug, a ball cup short section, etc. The closed electric submersible pump assembly comprises an air guide sleeve, a guide head, an oil pipe, an electric submersible pump set and a closed electric submersible pump hanger assembly. The closed electric submersible pump hanger assembly is an integral structure. A lower main pipe and a lower lateral pipe are arranged in the closed electric submersible pump hanger assembly and are extended into the air guide sleeve. The lower lateral pipe is connected with the electric submersible pump set. The lower main pipe is connected with the guide head and forms a column jacket steel wire operating passage. The closed electric submersible pump hanger ...

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05-01-2011 дата публикации

Self-cleaning sand discharging device of down-hole tools

Номер: CN0101936146A
Принадлежит:

The invention relates to a self-cleaning sand discharging device of down-hole tools, comprising a protection shield, a screen, a support beam and a base, wherein the support beam is arranged at the outer side of the base; the screen is arranged at the outer side of the support beam; and the protection shield is arranged at the outer side of the screen. The invention has the advantage that the device can be applied to various down-hole operations needing sand filtration, can be matched with a plurality of down-hole tools with simple and convenient installation, and can efficiently realize the filtration and sand discharging when the sand-containing oil in and out of the tools overflows. Furthermore, the device can reduce the accumulation of sand scale through the repeated deformation and recovery of the elastic screen and the wave-shaped support beam, in such way, the sand grains suspending in the filter medium are kept out of the screen to realize the sand discharging effect, and the screen ...

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17-04-2002 дата публикации

Anti-pollution protecting method and device for sandwiched perforating gun

Номер: CN0001344858A
Принадлежит:

The present invention relates to the anti-pollution protecting method and device for sandwiched perforating gun in oil and gas well. The sandwiched perforating gun has sealing structure at its two ends, and the explosive fuse of perforating gun is isolated from that of sandwiched gun. The sealing structure between the perforating gun and the sandwiched gun consists of joint and blast propagator inside the cavity of the joint. The two ends of the blast propagator are connected to explosive fuses of perforating gun and the sandwiched gun separately. After the perforating gun is made to explode,the liquid is impossible to enter to the cavity of the sandwiched gun, and this can prevent environmental pollution caused by repeated use of the sandwiched gun. In addition, in case of breakdown of blast propagation, no liquid enters to the cavity of the sandwiched gun, and this makes it possible for the perforating gun and the sandwiched gun to be re-used.

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13-05-2009 дата публикации

Branching well seat suspension liner tube hydraulic booster expansion system

Номер: CN0101429850A
Принадлежит:

The invention relates to a seat suspension liner pipe hydraulic boosting expansion system for a branch well. The system is characterized in that the system comprises a sleeve, a liner pipe, an hole enlargement bit, a hydraulic cylinder, a piston rod, a boosting piston and a drill rod; the hole enlargement bit is arranged inside the liner pipe, and the bottom of the liner pipe is arranged inside the sleeve; the top and the bottom of the hydraulic cylinder are sealed respectively, and the bottom of the hydraulic cylinder is hermetically connected with the top of the liner pipe through a bolt pin; the piston rod is a hollow rod, and the bottom of the piston rod passes through the bottom of the hole enlargement bit and is fixed on the bottom of the hole enlargement bit; the top of the piston rod passes through the top of the boosting piston and is connected with the drill rod; the boosting piston is provided with a liquid outlet hole communicated with the center of the piston rod. The system ...

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13-05-2009 дата публикации

Design method for maximum torque of well drilling seat suspension liner tube

Номер: CN0101429857A
Принадлежит:

The invention relates to a design method for the maximum torque born by a well seat suspension liner. The design method is characterized in that the method comprises the selection of the material and length of the liner arranged in a sleeve; the selection of the liner material meets the following formula: P beta=sigma s1 ln(c/b)+sigma s2 ln(b/a)=P beta 1+P beta 2; the selection of the liner length meets the following formula: l =M top (2 pi mu P beta b2), wherein P beta is the plastic limit stress P beta of a branch well seat suspension system, b represents the internal radius of the sleeve, c represents the external radius of the sleeve, a represents the internal radius of the liner, b represents the external radius of the liner, sigma s1 represents the yield strength of the sleeve, and sigma s2 represents the yield strength of the liner material; 1 is the length of the linear; M top represents the top driving toque of a drilling machine to a drilling bit; and mu represents the frictional ...

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13-05-2009 дата публикации

Design method for liner pipe of branching well seat suspension system

Номер: CN0101430729A
Принадлежит:

The invention relates to a method for designing a liner tube of a multilateral well hanger system. The method comprises the following steps: liner tube material in a bushing and the length of the liner tube are selected, wherein, the selection of the liner tube material meets the following formula: P beta=sigma s1 ln(c/b)+sigma s2 ln(b/a)=P beta1+P beta2; and the selection of the length of the liner tube meets the following formula: 1 is equal to or more than G/(2 pi b*mu P beta). The method abstracts complex illustrative concept to a simple formula, so that the design of the liner tube has academic guidance, and the method has significant practical meaning in application. The method of the invention can be widely used in designing of the multilateral well hanger system during petroleum extraction process.

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07-01-2009 дата публикации

Hermetic electric submersible pump production completion system capable of proceeding steel wire operation

Номер: CN0101338658A
Принадлежит:

The present invention relates to a closed electric submersible pump production well completion system which can process for steel wire operation. The closed electric submersible pump production well completion system comprises a production plug-in head, a closed electric submersible pump assembly, a blanking plug, a ball cup short section, etc. The closed electric submersible pump assembly comprises an air guide sleeve, a guide head, an oil pipe, an electric submersible pump set and a closed electric submersible pump hanger assembly. The closed electric submersible pump hanger assembly is an integral structure. A lower main pipe and a lower lateral pipe are arranged in the closed electric submersible pump hanger assembly and are extended into the air guide sleeve. The lower lateral pipe is connected with the electric submersible pump set. The lower main pipe is connected with the guide head and forms a column jacket steel wire operating passage. The closed electric submersible pump hanger ...

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05-11-2014 дата публикации

Steam production system

Номер: CN104132320A
Принадлежит:

The invention provides a steam production system which recycles heat of high-temperature and high-humidity process gas so as to overcome the defects in the prior art. The steam production system comprises a water supply pipe, a two-phase-change heat exchanger, a main steam pipe, an injection gas pipe, a high-temperature and high-humidity gas pipe, a low-temperature and low-humidity gas pipe, a condensate pipe, an injection gas pipe, an injector, a steam pipe, a temperature lowering water pipe, a temperature lowering device, a steam outlet pipe and a blow off pipe. A steam collection box of the two-phase-change heat exchanger is connected with the suction opening of the injector. Vaporization pressure on the water side in the two-phase-change heat exchanger is controlled through low pressure generated by the injector. The two-phase-change heat exchanger comprises a water separation box, a lower pipe plate, a water vaporization pipe, a diversion plate and an upper pipe plate. The water separation ...

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22-09-2010 дата публикации

Dynamic oil well sand control screen tube and manufacturing method thereof

Номер: CN0101839122A
Принадлежит:

The invention relates to a dynamic oil well sand control screen tube which comprises a perforated tube, a plurality of support rods arranged on the external surface of the perforated tube axially and parallelly along the perforated tube, a filtering material winding or coating the perforated tube and the support rods and an external protecting tube sleeved on the filtering material. A manufacturing method of the dynamic oil well sand control screen tube comprises the following steps of: welding the support rods on the external surface of the perforated tube axially and parallelly along the perforated tube; winding or coating the filtering material on the perforated tube provided with the support rods through welding; and sleeving the perforated tube into the external protecting tube to obtain the dynamic oil well sand control screen tube. The filtering material of the dynamic oil well sand control screen tube manufactured by the invention has certain distortion space, when produced sand ...

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