CN102155201A - Lined-cavity charge with consistent punching aperture rule and hole depth - Google Patents
Lined-cavity charge with consistent punching aperture rule and hole depth Download PDFInfo
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- CN102155201A CN102155201A CN2011101046649A CN201110104664A CN102155201A CN 102155201 A CN102155201 A CN 102155201A CN 2011101046649 A CN2011101046649 A CN 2011101046649A CN 201110104664 A CN201110104664 A CN 201110104664A CN 102155201 A CN102155201 A CN 102155201A
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Abstract
The invention discloses a lined-cavity charge with a consistent punching aperture rule and a consistent hole depth. The lined-cavity charge mainly comprises a charge body; and a reflection groove is formed on the inner wall of an inner cavity of the charge body. An inner cavity of a lined-cavity charge shell has a structure of combination of a reflection groove and arc top type and stepped reducing; the reflection groove is formed on the stepped reducing part; and the utilization rate of main explosive load is increased, so that detonation waves act in the axial direction through a reflection interface during transferring and are enhanced, the initial energy and speed of the detonation waves are improved, and punching indexes of the lined-cavity charge are improved. The influence of harmful detonation waves is effectively reduced, the detonation power and jet speed are improved, the effect of the consistent punching aperture rule and the consistent hole depth are guaranteed, and better punching indexes are reached. The lined-cavity charge has a simple structure and a reasonable design and is easy to implement.
Description
Technical field
The present invention relates to perforating bullet, the lined-cavity charge of specifically a kind of piercing aperture rule and hole depth unanimity.
Background technology
At present, after setting of casing was adopted in the oil field more, the use jet perforator was penetrated sleeve pipe, cement sheath, the contaminated zone of wearing down-hole sealing layer of oil gas production and is goed deep into oil-gas Layer and carry out completion, reaches the purpose of oil recovery, gas production, water filling.What the perforator perforation played a major role is lined-cavity charge, its jet is worn dark index and is had the most direct, most important contribution for linking up layer of oil gas production, therefore carries out raising lined-cavity charge punching quality and stability study and has profound significance to improving oil well productivity.With lined-cavity charge in laboratory target practice process of the test, the discovery piercing aperture is irregular, problems such as hole depth uniformity difference, main cause is the effect of harmful shock wave in the detonation process, cause jet in perforation procedure, to be subjected to influence, it is bad centrality to occur, and the phenomenon that energy weakens has reduced the penetration effect of jet.Perforating depth in the reservoir is inconsistent, easily causes turbulent phenomenon occurring near the eyelet, has influenced flowing of fluid, thereby has influenced production capacity.
Application number is 200920243436.8, the applying date is on November 24th, 2009, publication number is 201531259U, open day is the perforating bullet of a kind of oil gas well of 2010-07-21 with the close deep penetration perforator in high hole, comprise shell case and cavity liner, the perforation end of shell case is formed by cylindrical section, conicle section and big conical section, and the diameter of cylindrical section is 9mm-12mm, the tapering of conicle section is 125 °-140 °, and the tapering of big conical section is 45 °-55 °; The shell case inner chamber is formed by propagation of explosion hole, conelet body cavity, big cone cavity and cylindrical cavity, and the tapering of conelet body cavity is 90 °-110 °, and the tapering of big cone cavity is 42 °-50 °, and the cylindrical cavity diameter is 46mm-50mm.Penetration depth of the present invention is darker, and piercing aperture is bigger, and the hole of perforation is close higher, and can avoid disturbing between bullet.This shows that it is darker that disclosure document has only solved penetration depth, the problem that the aperture is big, it is irregular not solve piercing aperture, problems such as hole depth uniformity difference.
Application number is 201020037543.8, the applying date is 2010-01-05, publication number is 201560753U, open day is a kind of big diameter and deep penetrating perforating bumb of 2010-08-25, the design and manufacturing technology field that relates to perforating bullet, comprise shell case and cavity liner, shell case is made of metal shell, the internal face of metal shell is made of four sections curvilinear structures, the tip of cavity liner is an arc-shaped structure, and internal face is the taper seat structure, the invention provides a kind of existing than the large perforation aperture, the big diameter and deep penetrating perforating bumb of the good penetration depth of tool again, solved deep penetrating charge and large aperture perforating bullet and can not form the large aperture on the sleeve pipe and the deep penetrating problem on stratum simultaneously, the cavity liner design of employing, can strengthen explosive payload, therefore have the characteristics that improve perforating bullet efficient.Equally, it is darker that disclosure document has only solved penetration depth, the problem that the aperture is big, and it is irregular not solve piercing aperture, problems such as hole depth uniformity difference.
Application number is 200820178896.2, the applying date is 2008-11-18, publication number is 201297161, open day is large aperture, the deep penetrating charge of 2009-08-26, comprise silk pressing, body, powder column, be characterized in that cavity liner is pushed up by circular-arc cover, form with the coniform cover body different with the interconnective successively 3 sections coning angles in cover top.In order to improve the stability of perforating depth and perforating depth simultaneously, also can be provided with back-up ring in the bottom of cavity liner, between back-up ring and body, gland is housed.The present invention makes the bus of cavity liner become broken line, under the constant situation of cavity liner height and opening, has improved bus greatly, improves perforating depth and perforation diameter.This cavity liner is easy to process, can be in mould a mould pressing, simplified production technology, reduced manufacturing cost.The back-up ring and the gland that are provided with can make between cavity liner, powder column and the body to be locked, and the three does not produce relative displacement when detonating, and guarantee the stability of perforating depth and perforating depth.Have simple in structure, reasonable in design, easy to process, cost is low, advantage such as easy to utilize.This open source literature is to design in order better to improve the stability of perforating depth and perforating depth equally, and it is irregular not solve piercing aperture equally, problems such as hole depth uniformity difference.
Summary of the invention
The objective of the invention is defective at the prior art existence, the lined-cavity charge of a kind of piercing aperture rule and hole depth unanimity is provided, according to Mach detonation wave theory, in order to reduce harmful detonation wave to wearing dark influence, perforation shell case inner chamber is designed to the structure that reflection groove combines with arc top formula and ladder reducing, increase the reflection groove structure at ladder reducing place, increase main charge amount utilization rate, make and act on axis direction through reflecting interface in the detonation wave transmittance process and strengthened, improve detonation wave primary power and speed, promote the perforation index of perforating bullet.The piercing aperture that solves the prior art existence is irregular, problems such as hole depth uniformity difference.
The technical solution adopted for the present invention to solve the technical problems is: the lined-cavity charge of a kind of piercing aperture rule and hole depth unanimity, and its structure mainly comprises body; Offer reflection groove on the inwall of described body inner chamber.
Described reflection groove is opened on the arc surface of arc top, middle part staged reducing of body inner chamber, and 1/4～1/3 following place of oral area.
Arc top formula structure is adopted on described body inner chamber top, and the reducing mode that the below then adopts staged to be increased successively to the bottom by the top behind two sublinear reducings, becomes fixed inner diameter in the bottom.
Described reflection groove cross section is an arcs of recesses, and reflection groove spacing between any two equates.
The lined-cavity charge of a kind of piercing aperture rule of the present invention and hole depth unanimity is compared with prior art, has following beneficial effect:
The present invention is designed to the structure that reflection groove combines with arc top formula and ladder reducing with perforation shell case inner chamber, increase the reflection groove structure at ladder reducing place, increase main charge amount utilization rate, make and act on axis direction through reflecting interface in the detonation wave transmittance process and strengthened, improve detonation wave primary power and speed, promote the perforation index of perforating bullet.The present invention effectively reduces harmful detonation wave influence, has improved detonation power and effluxvelocity, arrives better perforation index.It is simple in structure, reasonable in design, is easy to realize.
Description of drawings
Accompanying drawing is the structural representation of the lined-cavity charge of a kind of piercing aperture rule of the present invention and hole depth unanimity.
Among the figure: body 1; Arc top formula structure 2; Staged reducing 3; Reflection groove structure 4.
The specific embodiment
Next explain below with reference to Figure of description the lined-cavity charge of a kind of piercing aperture rule of the present invention and hole depth unanimity being done.
As shown in the figure, the lined-cavity charge of a kind of piercing aperture rule and hole depth unanimity, its structure mainly comprises body 1; Arc top formula structure 2 is adopted on described body inner chamber top, has improved the explosive payload of perforating bullet and the effective rate of utilization of explosive; Then adopt by the top to staged reducing 3 modes that the bottom increases successively the below, behind two sublinear reducings, becomes fixed inner diameter in the bottom, has eliminated the influence of harmful shock wave to jet.Offer reflection groove structure 4 on the inwall of described body inner chamber.Described reflection groove is opened on the arc surface of arc top, middle part staged reducing of body inner chamber, and 1/4～1/3 following place of oral area.A few are set and have the certain angle arcs of recesses, and reflection groove spacing between any two equates.Reflection groove structure 4 has increased explosive charge, makes to act on axis direction through reflecting interface in the detonation wave transmittance process and strengthened, and improves effluxvelocity, increases the penetration depth of perforating bullet, has guaranteed the effect of piercing aperture rule and hole depth unanimity.
The above embodiment is a kind of of the more preferably concrete embodiment of the present invention, and common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacement all should be included in protection scope of the present invention.
Claims (4)
1. the lined-cavity charge of piercing aperture rule and hole depth unanimity, its structure mainly comprises body; It is characterized in that: offer reflection groove on the inwall of described body inner chamber.
2. the lined-cavity charge of a kind of piercing aperture rule according to claim 1 and hole depth unanimity is characterized in that: described reflection groove is opened on the arc surface of arc top, middle part staged reducing of body inner chamber, and 1/4～1/3 following place of oral area.
3. the lined-cavity charge of a kind of piercing aperture rule according to claim 1 and 2 and hole depth unanimity, it is characterized in that: arc top formula structure is adopted on described body inner chamber top, the reducing mode that the below then adopts staged to be increased successively to the bottom by the top, behind two sublinear reducings, become fixed inner diameter in the bottom.
4. the lined-cavity charge of a kind of piercing aperture rule according to claim 1 and 2 and hole depth unanimity is characterized in that: described reflection groove cross section is an arcs of recesses, and reflection groove spacing between any two equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101046649A CN102155201A (en) | 2011-04-26 | 2011-04-26 | Lined-cavity charge with consistent punching aperture rule and hole depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101046649A CN102155201A (en) | 2011-04-26 | 2011-04-26 | Lined-cavity charge with consistent punching aperture rule and hole depth |
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| CN102155201A true CN102155201A (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101046649A Pending CN102155201A (en) | 2011-04-26 | 2011-04-26 | Lined-cavity charge with consistent punching aperture rule and hole depth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761599A (en) * | 2016-12-24 | 2017-05-31 | 中石化石油工程技术服务有限公司 | A kind of perforating bullet of raising duct flow conductivity |
Citations (6)
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| CN2470533Y (en) * | 2001-03-15 | 2002-01-09 | 东营市新蓬高新技术开发有限责任公司 | Boss-type explosive-filling synergist perforating bullet |
| CN1443925A (en) * | 2002-03-08 | 2003-09-24 | 东营市万通胜利测井技术开发有限责任公司 | Double-layer gun high-effective perforator |
| US20030183113A1 (en) * | 2002-03-12 | 2003-10-02 | Barlow Darren R. | Shaped-charge liner with precursor liner |
| CN201202456Y (en) * | 2008-04-18 | 2009-03-04 | 四川石油管理局测井公司 | Composite type synergistic gun perforation cartridge |
| CN201221343Y (en) * | 2008-01-30 | 2009-04-15 | 四川石油管理局测井公司 | Slim hole ultra-deep penetration gun perforation cartridge |
| CN202165062U (en) * | 2011-04-26 | 2012-03-14 | 中国石油化工集团公司 | Lined-cavity charge with consistent punching aperture rule and hole depth |
-
2011
- 2011-04-26 CN CN2011101046649A patent/CN102155201A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2470533Y (en) * | 2001-03-15 | 2002-01-09 | 东营市新蓬高新技术开发有限责任公司 | Boss-type explosive-filling synergist perforating bullet |
| CN1443925A (en) * | 2002-03-08 | 2003-09-24 | 东营市万通胜利测井技术开发有限责任公司 | Double-layer gun high-effective perforator |
| US20030183113A1 (en) * | 2002-03-12 | 2003-10-02 | Barlow Darren R. | Shaped-charge liner with precursor liner |
| CN201221343Y (en) * | 2008-01-30 | 2009-04-15 | 四川石油管理局测井公司 | Slim hole ultra-deep penetration gun perforation cartridge |
| CN201202456Y (en) * | 2008-04-18 | 2009-03-04 | 四川石油管理局测井公司 | Composite type synergistic gun perforation cartridge |
| CN202165062U (en) * | 2011-04-26 | 2012-03-14 | 中国石油化工集团公司 | Lined-cavity charge with consistent punching aperture rule and hole depth |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761599A (en) * | 2016-12-24 | 2017-05-31 | 中石化石油工程技术服务有限公司 | A kind of perforating bullet of raising duct flow conductivity |
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Application publication date: 20110817 |