CN101169034A - High hole dense perforation pressing crack sand controlling device for oil well - Google Patents
High hole dense perforation pressing crack sand controlling device for oil well Download PDFInfo
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- CN101169034A CN101169034A CNA2006101506533A CN200610150653A CN101169034A CN 101169034 A CN101169034 A CN 101169034A CN A2006101506533 A CNA2006101506533 A CN A2006101506533A CN 200610150653 A CN200610150653 A CN 200610150653A CN 101169034 A CN101169034 A CN 101169034A
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Abstract
The invention provides an oil well used high-hole dense perforation fracturing and sand controlling device, which includes a perforating unit containing 2-4 perforators and an aftereffect acting part filled with perforated sand preventing material and boosting powder. The invention is characterized in that the perforating unit and the aftereffect acting part are both arranged in a cylindrical boosting chamber, the surface of the boosting chamber is a broken-line or streamline rotating curve, the middle part of the inner cavity are provided with 2-4 round holes for fixing the perforating unit. Fracturing charge is positioned on the outer side of the perforating unit, the sand preventing perforated material is positioned on the two sides of the fracturing charge, and the boosting powder is positioned outside the perforated material. The working principle of the device is using the explosion products of perforator charge to ignite the fracturing charge to fracture oil layer as the perforator perforates; using the high-energy gas produced by the combustion of the boosting powder to push the sand preventing perforated material into and staying in a hole passage punched by liquid jet, and a permanent sand preventing filtering screen is formed in the oil layer. The filtering screen is permeable by oil gas, but can block the quicksand. The invention can enable the perforating, the fracturing and the sand preventing tasks to be completed at once; can improve operation effect of the perforating and sand preventing; and can increase the oil and gas output.
Description
One, technical field
The present invention relates to a kind of completion system that use in the oil field, specifically a kind of oil well high hole dense perforation pressing crack sand controlling device.
Two, background technology
In the completion process of ravelly ground, must consider the sand problem that may occur in the oil well operation.Fine sand migration in the rock stratum can be controlled with anti-sand method, and all these methods all are to set up one every the sand district.Before rock stratum liquid flows into pit shaft, must pass through every the sand district.Provide every the available mechanical means in sand district (as lining, filter screen, gravel packer), also can be by injecting resin and plastics are fixed realizes.Yet the former technology is loaded down with trivial details, and investment is big, and the life-span is very short, and standing charges are higher; The latter needs complicated " perforation---injection " to have complete superb plastics consolidation technique technology again, and these are all very backward in China.
Last century the nineties, the composite gun perforation sand control technique that people begin one's study perforation and two operations of sand control are combined.This technology drives metal jet by explosive charge and penetrates oil pipe, cement layer, also penetrates enough dark duct in the petroliferous bed around, porous material is pushed this duct and stay the there at the high pressure that utilizes explosive detonation and powder burning to produce then, form permanent running sand filtration plug.Two operations of perforation and sand control are once finished, compared with sand control treatment, save complicated sand control treatment operation with traditional perforation, not only can save great amount of manpower and material resources and fund, and effect is lasting, need not to change midway, has reduced standing charges.
Yet owing to lack practical experience, design in the past also exists some obvious defects: at first being that perforation density on the unit length is on the low side, all is 10 hole/rice generally, does not satisfy the needs (general requirements＞13 hole/rice) of oil field high yield.Next is can only penetrate a hole on the aspect, if the eyelet capacity is big, sand prevention material may be not enough, causes the sand control cock body long-pending too small, and envelope is the duct oral area incessantly, causes the sand control treatment failure; If the fine and close hardness in rock stratum is big, the eyelet volume is little, then may cause the waste of sand prevention material ... or the like, these are not enough and defective has not only influenced composite gun perforation-sand control technique operation effectiveness, and the popularization of the large tracts of land of this technology of giving has brought difficulty.
Three, summary of the invention
Content of the present invention is exactly at above problem, a kind of oil well high hole dense perforation pressing crack sand controlling device is provided, make shot density improve more than 30%, reach 13～18 hole/rice even higher, this has not only increased the effective passage of pit shaft to oil reservoir, improve oil and gas production, and made the filling of sand prevention material and advance more scientific and reasonablely, improved the effect of sand control treatment.
The object of the present invention is achieved like this, a kind of oil well high hole dense perforation pressing crack sand controlling device, it comprises contains 2-4 perforator perforation unit of forming and the after effect part that can finish sand control treatment, its architectural feature is that 2-4 perforator is fixed together to form a perforation unit, this perforation unit is placed the middle part of this device, the pressure break powder charge is equipped with in both sides up and down, the pressure break powder charge outside is filled to add unvenile water is passed through, can block the porous sand prevention material of quicksand again and the porous sand prevention material is sent into the axial driving energetic material in duct, cover their boosting storehouse of splendid attire all around.Boosting storehouse external surface is a column type, inner surface is streamline or the broken line type that is easy to the porous material ejection, integral body is the axial symmetry hollow rotating body, with the perforator axis normal, leave the fixedly circular hole of perforator on relative with the perforator in the middle position, symmetry is placed pressure break powder charge, porous sand prevention material in boosting storehouse, circular hole both sides, middle part, main driving contains can medicine piece and high sensitivity ignition charge piece.The boosting storehouse can be metal, plastics and other solid material and makes.
In the middle part in boosting storehouse filling perforation unit.This perforation unit is made up of 2-4 perforator, and each perforator afterbody is inside, joins with detonating fuse; Oral area is outside, and the axis horizontal of adjacent perforations device becomes 120 ° or 180 ° of angles, and perforator axis and perforating gun main shaft are at an angle of 90.
Perforator both sides filling pressure break powder charge up and down, the pressure break powder charge is made up of gunpowder, explosive, propellant or their mixture, is solid block; It can be made cake and be placed on both sides, perforation unit, also can make cyclome and be enclosed within the perforator external surface.The filling of the pressure break powder charge outside can allow unvenile water by and block the porous sand prevention material of quicksand, this porous material is made up of stainless steel pompon and passive high strength inert particle, axial driving energetic material is equipped with in the porous material both sides.Axially drive energetic material and divide two parts: main medicine piece and the ignition charge piece of driving.Porous material and main drive block join, the main medicine piece outside that drives is the ignition charge piece, main driving medicine piece is heat-resisting propellant, gunpowder and their mixture, be block column type solid, the ignition charge piece is porous or progreesive burning gunpowder or their mixture composition, the effect of energetic material is to produce an end thrust, accelerates porous material to central motion, sprays from the circular hole of middle part, boosting storehouse at last.
Owing to adopted such scheme, oil well high hole dense perforation pressing crack sand controlling device of the present invention, can add porous material and realize by filling around the perforator: after perforator detonated, shock wave be propagated in the powder charge high speed, the cavity liner that crushes forms metal jet perforation in the rock stratum; The perforator detonation product has been lighted the pressure break powder charge in the perforator outside, and pressure break powder charge ignition produces high energy gas to oil reservoir duct block clearing pressure break, for passage has been opened in the propelling of porous sand prevention material.Powder charge in the detonating fuse is simultaneously also propagated forward with the speed of 7000 meter per seconds, lights the high sensitivity ignition charge piece in the detonating fuse outside, produces the moment HTHP after high sensitivity ignition charge piece is lighted a fire, and makes main the driving contain energy medicine piece at this HTHP effect down-firing.After containing the igniting of energy medicine piece, expand rapidly, produce immense pressure, porous material is released from the boosting storehouse, fill and add in the duct that jet is got, and stay there, form permanent porous filtering plug, it only by unvenile water, has blocked sand.
Four, description of drawings
Oil well perforation operation schematic diagram when Fig. 1 is oil exploration and oil recovery.
Fig. 2 is a common petroleum perforator structural representation.
Fig. 3 is the high hole dense perforation cell schematics that contains three jet perforators that the present invention adopts.
Fig. 4 is oil well of the present invention high hole dense perforation pressing crack sand controlling device (I) schematic diagram.
Fig. 5 is the high hole dense perforation cell schematics that contains four jet perforators that the present invention adopts.
Fig. 6 is oil well of the present invention high hole dense perforation pressing crack sand controlling device (II) schematic diagram.
Fig. 7 is oil well of the present invention high hole dense perforation pressing crack sand controlling device (III) schematic diagram.
Five, the specific embodiment
Oil well perforation operation schematic diagram when Fig. 1 is oil exploration and oil recovery.When petroleum recovering, be to setting of casing behind the oil drilling 1, again using cement stabilization between sleeve pipe 1 and the stratum 5, then perforator 3 is packed in the perforating gun 2 into appropriate depth in the following insertion sleeve pipe 1.After degree of depth calibration, just can carry out perforating job.
The petroleum perforation unit 3 that contains three perforators (3) that Fig. 3 adopts for the present invention ', be characterized on the position of placing conventional gun usually, putting three perforators 3, the three places dorsad, be hexagonal angle, detonating fuse 4 passes through in the middle of the blast hole of three perforators 3, and joins with a blast hole.
Fig. 4 is the embodiment of the invention (I), and its design feature has increased the after effect part around perforator 3.After effect part is by boosting storehouse 9, detonating fuse 4, and pressure break powder charge 6 porous materials are sand prevention material 7, high sensitivity ignition charge piece 10 and drive axially that energetic material is promptly main to be driven medicine piece (8) and form.Boosting storehouse 9 external surfaces are column type, inner surface is broken line or streamlined surface of revolution, integral body is turned for the quill shaft symmetry, three circular holes are opened at the inner chamber middle part, in order to fixing perforation unit 3 ', three circular holes are parallel, the angle between three round hole axial is 120 °, Circularhole diameter is greater than perforator 3 external diameters, perforation unit 3 ' vertical with the boosting storehouse 90 °.The inside in boosting storehouse 9, core be equipped with perforation unit 3 ', 3 ' outside, perforation unit filling pressure break powder charge 6, pressure break powder charge 6 is that gunpowder, explosive, propellant and their mixture are formed, be solid block, it can be made block cake and be placed on 3 ' both sides, perforation unit, also can make cyclome and be enclosed within the perforator external surface.Pressure break powder charge 6 outside filling porous sand prevention materials 7.The sand control effect is finished by porous sand prevention material 7, and porous sand prevention material 7 is made up of stainless steel pompon and passive high strength inert particle, and appearance is broken line type or streamline surface of revolution.Detonating fuse 4 is at pressure break powder charge 6, the axial main medicine piece 8 that drives, and high sensitivity ignition charge piece 10 porous materials 7 and 3 ' centre, perforation unit are passed, with boosting storehouse 9 axis coaxles.Ignition charge piece 10 is made up of high sensitivity multiperforated powder, progreesive burning gunpowder or their mixture, is the block annular solid of low-density, is positioned at the outermost of whole device, is enclosed within on the detonating fuse 4.The inner surface of ignition charge piece 10 leans on mutually with main driving medicine piece 8, and the master drives medicine piece 8 and is made up of heat-resisting propellant, gunpowder or their mixture, for the block annular solid of high density, is enclosed within on the detonating fuse 4, and main driving medicine piece 8 inboards are adjacent with porous material 7.
The petroleum perforation unit 3 that contains four perforators 3 that Fig. 5 adopts for the present invention ', be characterized in two perforators 3 are placed dorsad and form a combination perforator, with perforation unit 3 of such two groups of perforators composition '.Such two groups of perforators divide two-layer up and down, and parallel placement contains four perforators 3 altogether, and the angle between its axis is 90 °.Diaxon all with the main shaft in boosting storehouse 9 at an angle of 90.Detonating fuse 4 passes through from the blast hole external surface of two groups of perforators, and joins with the blast hole that rises of four perforators 3.
Fig. 6 is the embodiment of the invention (II), be characterized in two perforators 3 are formed a combination perforator, with two groups of such combination perforators form perforation unit 3 ', with the middle part of perforation sand controlling device, this perforation unit 3 ' be placed on, increased after effect (promptly controlling the sand operation) part on every side, the after effect part is by boosting storehouse 9, and detonating fuse 4, pressure break powder charge 6, porous material 7, ignition charge piece 10 and the main medicine piece 8 that drives are formed.Boosting storehouse 9 external surfaces are column type, and inner surface is broken line or streamlined surface of revolution, and integral body is quill shaft symmetry rotary body, and the middle part symmetry is opened 4 circular holes, with fixing perforation unit 3 '.Two groups of perforators 3 are perforation unit 3 ' parallel placement, divide two-layer abutting against together up and down, and axis is crossed as 90 °.The axis normal in perforator 3 and boosting storehouse 9 at an angle of 90.Perforation unit 3 ' the outside place pressure break powder charge 6, pressure break powder charge 6 is that gunpowder, explosive, propellant and their mixture are formed, be solid block, it can be made block cake and be placed on 3 ' both sides, perforation unit, also can make cyclome and be enclosed within the perforator external surface.Pressure break powder charge 6 outside filling porous sand prevention materials 7, sand control porous material 7 is made up of stainless steel pompon and passive high strength inert particle, and external surface is broken line or streamlined surface of revolution with the inner surface in boosting storehouse 9.The outside of porous sand prevention material 7 is the main medicine pieces 8 that drive, the main medicine piece 8 that drives is made up of heat-resisting propellant, gunpowder or their mixture, be the block annular solid of high density, the main outside that drives medicine piece 8 abuts in ignition charge piece 10, ignition charge piece 10 is made up of high sensitivity multiperforated powder, progreesive burning gunpowder or their mixture, be the block annular solid of low-density, be positioned at the outermost of whole device, detonating fuse 4 is at ignition charge piece 10, the main medicine piece 8 that drives, pass in the middle of porous sand prevention material 7 and the perforator 3, coaxial with boosting storehouse 9.
Fig. 7 is the embodiment of the invention (III), being characterized in that perforation unit 3 ' contain 3, two perforators of two perforators 3 are coaxial places dorsad, perforation unit 3 ' with boosting storehouse 9 axis normal, be placed on the middle part in boosting storehouse 9, the material of other parts is all (II) identical with embodiment (I) with the assembling mode.
Owing to adopted above scheme, oil well of the present invention can be by realizing at perforator both sides filling anti-sand material and boosting energetic material with high hole dense perforation pressing crack sand controlling device: after the detonator detonates, detonating fuse 4 is propagated detonation step by step.Ignite perforation unit 3 ', make it at sleeve pipe 1, and perforation powder charge simultaneously detonation product is lighted the pressure break powder charge 6 of its both sides in the oil reservoir 3, pressure break powder charge 6 igniting backs produce a large amount of high energy gas, are that road is got through in the propelling of sand prevention material to oil reservoir duct block clearing pressure break.Detonating fuse 4 is lighted the high sensitivity ignition charge piece 10 that twines thereon in the propagation of explosion process on the other hand.After 10 igniting of high sensitivity ignition charge piece, in the boosting storehouse, produce HTHP, and then light the promptly main medicine piece 8 that drives of axial driving energetic material.After 8 igniting of side direction driving energetic material are reacted, expand rapidly, the generation immense pressure promotes porous sand prevention material 7 to axe movement, and the circular hole from 9 middle parts, boosting storehouse sprays at last.After sand prevention material sprays, enter the perforation tunnel in perforating gun, go deep into oil reservoir with the speed of hundreds of meter per second.Because the duct volume is limited, sand prevention material in front enters to hit at once on the top, duct behind the duct and is hindered.Being decelerated successively of back, stop motion like this.So a large amount of sand prevention materials collide mutually, intert each other, just in the duct, formed the sand control plug of a solid, this sand control plug can allow unvenile water flow through, and the while can be blocked quicksand, the operating principle of Here it is high hole dense perforation pressing crack sand controlling device.
Claims (8)
1. an oil well is with high hole tight defense sand perforation pressing crack sand controlling device, comprise the combination perforation unit (3 ') that 2-4 perforator is housed, pressure break powder charge (6), porous sand prevention material (7), detonating fuse (4), high sensitivity ignition charge piece (10), the main driving contains energy medicine piece (8) and boosting storehouse (9), it is characterized in that boosting storehouse (9) external surface is a column type, inner surface is broken line or streamline surface of revolution, integral body is quill shaft symmetry rotary body, 24 circular holes are left at the inner chamber middle part, in order to filling combination perforation unit (3 '), boosting storehouse (9) and perforation unit (3 ') axis normal are at an angle of 90, perforation unit (3 ') is housed in the boosting storehouse (9), pressure break powder charge (6), porous sand prevention material (7), the main driving contains energy medicine piece (8), high sensitivity ignition charge piece (10) and detonating fuse (4), its put in order into: perforation unit (3 ') are placed in the middle, both sides are pressure break powder charge (6) successively, porous sand prevention material (7), the main driving contains energy medicine piece (8) and high sensitivity ignition charge piece (10), detonating fuse (4) and boosting storehouse (9) are coaxial, at the main medicine piece (8) that drives of ignition charge piece (10), sand control porous material (7), pressure break powder charge (6), pass with middle part, combination perforation unit (3 ').
2. high hole dense perforation pressing crack sand controlling device according to claim 1, it is characterized in that perforation adopts the combination perforation unit (3 ') with three perforators, three parallel dorsad placements of perforator, axis becomes hexagonal angle, and detonating fuse (4) passes from the blast hole in the middle of perforation unit (3 ').
3. high hole dense perforation pressing crack sand controlling device according to claim 1, it is characterized in that the perforation unit (3 ') that perforation adopts four perforators to form, the coaxial horizontal positioned dorsad of per two perforators, be 180 ° of angles and form a combination perforator, divide two-layer up and down parallel placement to form a perforation unit (3 ') two groups of such combiners, both axis angles are 90 °, and detonating fuse (4) passes at two groups of perforator center blast holes.
4. high hole dense perforation pressing crack sand controlling device according to claim 1, it is characterized in that perforation adopts the perforation unit (3 ') with two perforators, two coaxial horizontal positioned dorsad of perforator, perforation unit (3 ') and boosting storehouse (9) axis normal, detonating fuse (4) plays the blast hole external surface in perforation unit (3 ') and passes.
5. high hole dense perforation pressing crack sand controlling device according to claim 1 is characterized in that outside the perforation unit (3 ') pressure break powder charge (6) being housed, and pressure break powder charge (6) is made up of gunpowder, explosive, propellant or their mixture, is solid block; It can be made cake and be placed on both sides, perforation unit (3 '), also can make cyclome and be enclosed within the perforator external surface.
6. high hole dense perforation pressing crack sand controlling device according to claim 1, it is characterized in that porous sand prevention material (7) places pressure break powder charge (6) outside, it is made up of stainless steel pompon and passive high strength inert particle, and external surface is straight line, broken line type or streamlined surface of revolution.
7. high hole dense perforation pressing crack sand controlling device according to claim 1, it is characterized in that in boosting storehouse (9) that porous sand prevention material (7) both sides are equipped with mainly drives that contain can medicine piece (8), it can medicine piece (8) can be gunpowder, explosive, propellant and their mixture that main driving contains, be block annular solid, be enclosed within on the detonating fuse (4).
8. high hole dense perforation pressing crack sand controlling device according to claim 1, it is characterized in that in the main outside that contains energy medicine piece (8) that drives, high sensitivity ignition charge piece (10) is housed, high sensitivity ignition charge piece (10), can be multiperforated powder, progreesive burning gunpowder and their mixture, be block annular solid, high sensitivity ignition charge piece (10) is enclosed within on the detonating fuse (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101506533A CN101169034A (en) | 2006-10-23 | 2006-10-23 | High hole dense perforation pressing crack sand controlling device for oil well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101506533A CN101169034A (en) | 2006-10-23 | 2006-10-23 | High hole dense perforation pressing crack sand controlling device for oil well |
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| CN101169034A true CN101169034A (en) | 2008-04-30 |
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| CNA2006101506533A Pending CN101169034A (en) | 2006-10-23 | 2006-10-23 | High hole dense perforation pressing crack sand controlling device for oil well |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022099A (en) * | 2009-09-11 | 2011-04-20 | 营口市石光石油机械有限责任公司 | Body-free side detonation bidirectional perforator used for oil well |
| CN105507838A (en) * | 2015-12-28 | 2016-04-20 | 北方斯伦贝谢油田技术（西安）有限公司 | Cumulative cutting device for thick-wall metal pipe columns |
| CN111411922A (en) * | 2020-03-11 | 2020-07-14 | 大连理工大学 | Horizontal well fracturing filling natural gas hydrate synergistic exploitation equipment and method |
-
2006
- 2006-10-23 CN CNA2006101506533A patent/CN101169034A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022099A (en) * | 2009-09-11 | 2011-04-20 | 营口市石光石油机械有限责任公司 | Body-free side detonation bidirectional perforator used for oil well |
| CN105507838A (en) * | 2015-12-28 | 2016-04-20 | 北方斯伦贝谢油田技术（西安）有限公司 | Cumulative cutting device for thick-wall metal pipe columns |
| CN105507838B (en) * | 2015-12-28 | 2018-02-13 | 北方斯伦贝谢油田技术（西安）有限公司 | A kind of cumulative blasting device for thick-walled metal tubing string |
| CN111411922A (en) * | 2020-03-11 | 2020-07-14 | 大连理工大学 | Horizontal well fracturing filling natural gas hydrate synergistic exploitation equipment and method |
| CN111411922B (en) * | 2020-03-11 | 2021-07-16 | 大连理工大学 | Horizontal well fracturing filling natural gas hydrate synergistic exploitation equipment and method |
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Open date: 20080430 |