CN109931044A - A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio - Google Patents
A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio Download PDFInfo
- Publication number
- CN109931044A CN109931044A CN201910190816.8A CN201910190816A CN109931044A CN 109931044 A CN109931044 A CN 109931044A CN 201910190816 A CN201910190816 A CN 201910190816A CN 109931044 A CN109931044 A CN 109931044A
- Authority
- CN
- China
- Prior art keywords
- axis
- energy gathering
- gathering cap
- cylinder
- cap
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000001186 cumulative effect Effects 0.000 title claims abstract description 27
- 238000011084 recovery Methods 0.000 title claims abstract description 22
- 239000002360 explosive Substances 0.000 claims abstract description 39
- 230000037452 priming Effects 0.000 claims abstract description 15
- 238000005474 detonation Methods 0.000 claims abstract description 12
- 241000700608 Sagitta Species 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000009172 bursting Effects 0.000 claims description 2
- 238000003306 harvesting Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 11
- 239000003999 initiator Substances 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 37
- 238000000034 method Methods 0.000 description 18
- 238000004880 explosion Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000006260 foam Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Forestry; Mining
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Business, Economics & Management (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Primary Health Care (AREA)
- Animal Husbandry (AREA)
- Economics (AREA)
- General Health & Medical Sciences (AREA)
- Human Resources & Organizations (AREA)
- Marketing (AREA)
- Marine Sciences & Fisheries (AREA)
- Strategic Management (AREA)
- Tourism & Hospitality (AREA)
- Health & Medical Sciences (AREA)
- General Business, Economics & Management (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Agronomy & Crop Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Eyeglasses (AREA)
Abstract
A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio, including priming device and air transporting arrangement, priming device includes three combination energy-gathering devices, detonation chain and initiator, three combination energy-gathering devices include the left energy gathering cap for projecting explosive charge energy centralization to the right, the right energy gathering cap that explosive charge energy centralization is projected to the left, the middle energy gathering cap for projecting explosive charge energy centralization to center, left energy gathering cap and right energy gathering cap are the paraboloid of revolution of outward opening, and middle energy gathering cap is the cylinder of outward opening.Compared with prior art, due to the cumulative action of left energy gathering cap, middle energy gathering cap and right energy gathering cap, squeeze the shale in explosive fracturing area simultaneously from left, center, right three spaces " a " font direction respectively, crackle is formed through rapidly the shale zone of fracture of " a " word shape, the specific surface area of shale is increased, to effectively increase the parsing rate and its recovery ratio of shale gas.The boss of spherical cap shape further enhances Mohaupt effect.
Description
Technical field
The present invention relates to the device for increasing shale gas recovery ratio, in particular to a kind of cylinder three combines cumulative pressure break and increases page
The device of rock gas recovery ratio.
Background technique
Shale gas is a kind of emerging clear energy sources, because its reserves is big, long the features such as in exploitation period due to receive much attention.However
As gas storage carrier shale body because its Natural porosity it is small, permeability is low, and 95% shale gas well is needed through artificial fracturing
Mode increase shale body permeability, can have commercial mining value.
Currently, the method for artificial fracturing mainly includes two classes: first is that hydraulic fracturing method, second is that foam fracturing method.Water
It forces cracking method and mainly achievees the purpose that fracturing rock stratum by injecting highly pressurised liquid into drilling.According to specific fracturing technology,
Hydraulic fracturing method includes three kinds of multistage fracturing, riverfrac treatment, hydraulic jetting fracturing etc..Multistage fracturing is to utilize ball sealer or limit
Flow Technique separates the technology that reservoir different layers position carries out staged fracturing.Riverfrac treatment is produced using a large amount of clear water injection stratum induction
The fracturing technique in raw water conservancy diversion crack.Hydraulic jetting fracturing is to carry sand body using high speed and high-pressure fluid to carry out perforation and open to split
The fracturing technique of seam.Foam fracturing method mainly reaches the mesh of fracturing rock stratum by injecting the liquid gas mixture of high pressure into drilling
's.According to the difference of gas componant, foam fracturing method can be divided into nitrogen foam pressure break and carbon dioxide foaming pressure break etc. two
Kind.Hydraulic fracturing method and foam fracturing method exist in the fracturing process of rammell is difficult to the shortcomings that overcoming: first is that pressure break
A large amount of chemical agents are equipped in liquid, it is big to formation damage；Second is that after the perforation of pressure break later period major fracture, the leakage of fracturing fluid compared with
It is serious；Third is that the anti-row of fracturing fluid is slower.Most important, the occurrence form of shale gas is based on adsorbed gas, only by broken
Broken method increases the specific surface area of shale body, just can increase the parsing amount of adsorbed gas, and above-mentioned two classes fracturing process is main
Achieve the purpose that volume increase by the natural fissure in perforation rock mass, the preservation characteristic of this and shale gas itself is inconsistent.
Chinese patent CN102168543B discloses a kind of method and dress for increasing shale gas recovery ratio by explosive manner
It sets, it includes loading priming device and air transporting arrangement that described device, which is arranged in shale gas well naked eye, and wherein loading detonation fills
It sets for surrounding shale to burst apart, air transporting arrangement will be transported to ground by the shale gas oozed out in the shale that is burst apart
Face；This method and device have that explosive charge power dissipation, explosive charge capacity usage ratio are low.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the defect of the prior art, the one kind for overcoming above-mentioned technical problem is provided
Cylinder three combines the device that cumulative pressure break increases shale gas recovery ratio.
In order to solve the above-mentioned technical problem, a kind of cylinder three of the present invention combines cumulative pressure break increase shale gas recovery ratio
Device technical solution it is as follows:
A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio, and described device setting is naked in shale gas well
In eye, described device includes priming device and air transporting arrangement, and for priming device for surrounding shale to burst apart, gas is defeated
Send device that will be transported to ground by the shale gas oozed out in the shale that is burst apart, the priming device includes detonation chain and detonation
Device, the air transporting arrangement include right flange, isolating device, Oil/Gas Pipe, poroid air inlet pipe；The poroid air inlet pipe setting exists
Between the isolating device and the right flange, one end of poroid air inlet pipe is arranged in the through-hole of the right flange, the other end
It is arranged in the through-hole in isolating device；Poroid air inlet pipe be the pipe with several air inlets, Oil/Gas Pipe one end setting every
From in the through-hole of device, the other end is connected with ground gas collecting apparatus
The priming device further includes three combination energy-gathering devices, and the three combinations energy-gathering device includes by explosive charge energy
It converges the left energy gathering cap projected to the right, converged by right energy gathering cap that explosive charge energy centralization projects to the left, by explosive charge energy
Gather the middle energy gathering cap projected to center, the left flange and the casing that are arranged on the left of left energy gathering cap；
The left energy gathering cap includes left concave outer surface and left concave inside surface, and the left concave outer surface and the left side are recessed
Shape inner surface is the paraboloid of revolution of outward opening, and the paraboloid of revolution of the left concave inside surface forms cavity；The left side
The maximum outside diameter of energy gathering cap is Da, the length of the left energy gathering cap is La；
The right energy gathering cap includes right concave outer surface and right concave inside surface, and the right concave outer surface and the right side are recessed
Shape inner surface is the paraboloid of revolution of outward opening, and the paraboloid of revolution of the right concave inside surface forms cavity；The right side
The maximum outside diameter of energy gathering cap is Db, the length of the right energy gathering cap is Lb；
The middle energy gathering cap includes middle concave outer surface and middle concave inner surface, and the middle concave outer surface is by n shape
Size is identical and circumferentially equally distributed, outward opening cylinder forms, n 3,4,5,6,7 or 8；Table in the middle concave
Face is identical by m geomery and circumferentially equally distributed, outward opening cylinder forms, m 3,4,5,6,7 or 8 and m=
n；The cylinder of the middle concave inner surface forms cavity；The maximum outside diameter of the middle energy gathering cap is Dc, the length of the middle energy gathering cap
Degree is Lc；
Be outside described sleeve pipe cylinder and its inside be cylindrical hole, described sleeve pipe sequentially passes through the left concave inside surface
Cavity, the cavity of middle concave inner surface, the cavity of right concave inside surface and right flange through-hole, described sleeve pipe one end is fixed on
The right side of left flange, the described sleeve pipe other end are fixed on the right side of right flange；
Left boss is provided on the right side of the left flange, the left boss is the spherical cap shape of outwardly convex, and the left side is convex
The height of projection of platform spherical cap shape is Ht, the maximum open part diameter of a circle of the left boss spherical cap shape is Dt；
Right boss is provided on the left of the right flange, the right boss is the spherical cap shape of outwardly convex, and the right side is convex
The height of projection of platform spherical cap shape is Ht, the maximum open part diameter of a circle of the right boss spherical cap shape is Dt；
The diameter DtFor explosive diameter D, the height HtFor 4mm~6mm.
Preferably, the rotary shaft of the left concave outer surface is XaAxis, the bus of the left concave outer surface are bus A,
The bus A is around the XaAxis rotates to form the left concave outer surface, and the bus A is the parabolic being made of following equation group
Line:
The rotary shaft of the left concave inside surface is XaAxis, the bus of the left concave inside surface are bus B, the bus
B is around the XaAxis rotates to form the left concave inside surface, and the bus B is the parabola being made of following equation group:
The rotary shaft of the right concave outer surface is XbAxis, the bus of the right concave outer surface are bus C, the bus
C is around the XbAxis rotates to form the right concave outer surface, and the bus C is the parabola being made of following equation group:
The rotary shaft of the right concave inside surface is XbAxis, the bus of the right concave inside surface are bus D, the bus
D is around the XbAxis rotates to form the right concave inside surface, and the bus D is the parabola being made of following equation group:
A cylinder in n cylinder of the middle concave outer surface is cylinder E, and the straight edge line of the cylinder E is parallel to
XcThe directrix of axis, the cylinder E is directrix E, and the straight edge line of the cylinder E moves in parallel to form the column along the directrix E
Face E, the directrix E are the curves of outward opening；
A cylinder in m cylinder of the middle concave inner surface is cylinder F, and the straight edge line of the cylinder F is parallel to
XcThe directrix of axis, the cylinder F is directrix F, and the straight edge line of the cylinder F moves in parallel to form the column along the directrix F
Face F, the directrix F are the curves of outward opening；
In various above:
Oa-XaYaZaThe coordinate origin of coordinate system is on the axis of the left energy gathering cap and in the length of left energy gathering cap
Point, XaAxis, YaAxis and ZaAxis constitutes right hand rectangular coordinate system, XaAxis is overlapped with the axis of the left energy gathering cap, XaAxis positive direction from
It is directed toward the right side of left energy gathering cap in the left side of left energy gathering cap；xa、yaAnd zaRespectively XaAxis, YaAxis and ZaThe coordinate variable of axis；
Oa1-Xa1Ya1Za1The coordinate origin of coordinate system is in Oa-XaYaZaIt is (- b in coordinate system1,c1, 0), Xa1Axis, Ya1Axis and
Za1Axis constitutes right hand rectangular coordinate system, Za1Axis and ZaAxis is parallel, Xa1Axis and XaAxle clamp angle is θa；xa1、ya1And za1Respectively Xa1
Axis, Ya1Axis and Za1The coordinate variable of axis；
Oa2-Xa2Ya2Za2The coordinate origin of coordinate system is in Oa-XaYaZaIt is (- b in coordinate system2,c2, 0), Xa2Axis, Ya2Axis and
Za2Axis constitutes right hand rectangular coordinate system, Za2Axis and ZaAxis is parallel, Xa1Axis and XaAxle clamp angle is θa；xa2、ya2And za2Respectively Xa2
Axis, Ya2Axis and Za2The coordinate variable of axis；
Ob-XbYbZbThe coordinate origin of coordinate system is on the axis of the right energy gathering cap and in the length of right energy gathering cap
Point, XbAxis, YbAxis and ZbAxis constitutes right hand rectangular coordinate system, XbAxis is overlapped with the axis of the right energy gathering cap, XbAxis positive direction from
It is directed toward the right side of right energy gathering cap in the left side of right energy gathering cap；xb、ybAnd zbRespectively XbAxis, YbAxis and ZbThe coordinate variable of axis；
Ob1-Xb1Yb1Zb1The coordinate origin of coordinate system is in Ob-XbYbZbIt is (b in coordinate system1,c1, 0), Xb1Axis, Yb1Axis and Zb1
Axis constitutes right hand rectangular coordinate system, Zb1Axis and ZbAxis is parallel, Xb1Axis and XbAxle clamp angle is θb；xb1、yb1And zb1Respectively Xb1Axis,
Yb1Axis and Zb1The coordinate variable of axis；
Ob2-Xb2Yb2Zb2The coordinate origin of coordinate system is in Ob-XbYbZbIt is (b in coordinate system2,c2, 0), Xb2Axis, Yb2Axis and Zb2
Axis constitutes right hand rectangular coordinate system, Zb2Axis and ZbAxis is parallel, Xb1Axis and XbAxle clamp angle is θb；xb2、yb2And zb2Respectively Xb2Axis,
Yb2Axis and Zb2The coordinate variable of axis；
Oc-XcYcZcThe coordinate origin of coordinate system is on the axis of the middle energy gathering cap and in the length of middle energy gathering cap
Point, XcAxis, YcAxis and ZcAxis constitutes right hand rectangular coordinate system, XcAxis is overlapped with the axis of the middle energy gathering cap, XcAxis positive direction from
The right side of energy gathering cap in the left side direction of middle energy gathering cap；xc、ycAnd zcRespectively XcAxis, YcAxis and ZcThe coordinate variable of axis；
XaAxis, XbAxis and XcAxis is conllinear；
DaAnd DbIt is equal and be D, LaAnd LbEqual and be L, the parameter θ is 40 °~50 °；
θa=-θ, θb=θ；
D is 280mm~320mm, and L is 380mm~420mm；
DcFor 280mm~320mm, LcFor 380mm~420mm；
H is the minimum wall thickness (MINI W.) of left energy gathering cap, middle energy gathering cap and right energy gathering cap, and H is 1mm~3mm；
a1、b1、c1、a2、b2、c2For parameter, c1It is 0.2~0.3 times of D, c2It is 0.15~0.25 times and c of D1>c2；
It solves following equation group and obtains a1、b1Value and a1> 0:
It solves following equation group and obtains a2、b2Value and a2> 0:
Preferably, the directrix E and directrix F is all parabola or is all circular arc.
Preferably, the directrix E is the parabola being made of following equation:
yc=a3+b3zc 2；
The directrix F is the parabola being made of following equation:
yc=a4+b4zc 2；
a3、b3、a4And b4For parameter, a3For Dc0.2~0.3 times, a4For Dc0.15~0.25 times and a3>a4, b3、b4By
Following formula calculates:
In formula: e3、e4For coefficient, e3For 0.7~0.9, e4For 0.9~1.1 and e4>e3。
Preferably, the directrix E is circular arc, loaded length L of the circular arc center of circle in middle energy gathering capcMiddle position and with institute
State XcThe distance of axis is Lc1, arc radius Rc1；
The directrix F is circular arc, loaded length L of the circular arc center of circle in middle energy gathering capcMiddle position and with the XcAxis
Distance is Lc2, arc radius Rc2；
Rc1、Rc2、Lc1And Lc2It calculates as follows respectively:
Hc1And Hc2It is sagitta, Hc1For charge diameter Dc0.1~0.3 times, Hc2For charge diameter Dc0.11~0.31
Times and Hc2>Hc1。
Preferably, the parameter θ is 45 °, parameter a1、b1、a2、b2Pass sequentially through following formula calculating:
P1=D-L-2c1；
Q1=D+L-2c1；
P2=D-L-2c2-2H；
Q2=D+L-2c2-2H；
The parameter c1It is 0.2~0.3 times of D, c2It is 0.15~0.25 times and c of D1>c2, D is 200mm~500mm, L
It is 1mm~3mm for 300mm~600mm, radial minimum wall thickness (MINI W.) H.
Preferably, the parameter D=300mm, L=400mm, La=400mm, Lb=400mm, c1=60mm, c2=
45mm, H=2mm, b1=179.0724809mm, a1=0.007938555mm, b2=184.116701mm, a2=
0.008717154mm；
N=4, m=4, Dc=D, Lc=400mm, a3=60mm, a4=45mm, e3=0.8, e4=1.0, Ld=
209.132mm, b3=0.0055, b4=0.0069.
Preferably, the parameter D=300mm, L=400mm, La=400mm, Lb=400mm, c1=60mm, c2=
45mm, H=2mm, b1=179.0724809mm, a1=0.007938555mm, b2=184.116701mm, a2=
0.008717154mm；
N=4, m=4, Dc=300mm, Lc=400mm, Hc1=60mm, Hc2=66mm, Ld=209.132mm, Rc1=
121.117mm, Lc1=167.182mm, Rc2=115.834mm, Lc2=155.899mm.
Preferably, the left flange, left energy gathering cap, middle energy gathering cap, right energy gathering cap and right flange form an enclosure space,
And explosive is set in the space.
Compared with prior art, the beneficial effects of the invention are that: due to Mohaupt effect, parabolical optical characteristics and opening
The cumulative characteristic of outside cylinder is projected explosive charge energy centralization by left energy gathering cap, middle energy gathering cap and right energy gathering cap, is fried
Medicine explosion energy utilization rate is high, while improving the length of the shale crackle in explosive fracturing area and the quantity of shale crackle；Especially
It is the cumulative action due to left energy gathering cap, middle energy gathering cap and right energy gathering cap, respectively from space " a " the font side of left, center, right three
Squeeze the shale in explosive fracturing area simultaneously to (wherein intermediate direction is n interrupted direction in spaces), crackle is formed through rapidly
The shale zone of fracture of " a " word shape, increases the specific surface area of shale, thus effectively increase shale gas parsing rate and
Its recovery ratio.Simultaneously as the cumulative action of the outwardly convex of the left boss and right boss of spherical cap shape, further enhances poly-
It can effect.If the group of left energy gathering cap 14, middle energy gathering cap 10 and right energy gathering cap 7 be combined into down " a " font (θ < 0 °), " ///" shape,
The combining forms such as "/|/" shape, " // | " shape, " | |/" shape, " " shape, " | | | " shape, do not have the technical effect of 1+1+1 > 3,
Combining form of the invention significantly reaches the technical effect that 1+1+1 is much larger than 3.
Detailed description of the invention
Fig. 1 is schematic device；
Fig. 2 is left energy gathering cap structural schematic diagram；
Fig. 3 is right energy gathering cap structural schematic diagram；
Fig. 4 is middle energy gathering cap structural schematic diagram；
Fig. 5 is the structural schematic diagram of the middle energy gathering cap A-A section of embodiment one；
Fig. 6 is the structural schematic diagram of the middle energy gathering cap A-A section of embodiment two；
In above-mentioned Fig. 1-Fig. 6: 1- shale gas well naked eye, 2- Oil/Gas Pipe, the poroid air inlet pipe of 3-, 4- air inlet, the right spill of 5-
Outer surface, the right concave inside surface of 6-, the right energy gathering cap of 7-, 8- middle concave outer surface, 9- middle concave inner surface, energy gathering cap in 10-,
The left concave outer surface of 11-, the left concave inside surface of 12-, the left flange of 13-, the left energy gathering cap of 14-, 17- casing, the right flange of 18-, 19- every
From device, 20- initiator, 21- detonation chain, 22- directrix E, 23- directrix F.
Specific embodiment
Below in conjunction with Figure of description, preferred embodiment of the present invention will be described, it should be understood that described herein
Preferred embodiment embodiment one only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio, and described device setting is naked in shale gas well
In eye 1, described device includes priming device and air transporting arrangement, and priming device is for bursting apart surrounding shale, gas
Conveying device will be transported to ground by the shale gas oozed out in the shale that is burst apart, and the priming device includes 21 He of detonation chain
Initiator 20, the air transporting arrangement include right flange 18, isolating device 19, Oil/Gas Pipe 2, poroid air inlet pipe 3；It is described poroid
Air inlet pipe 3 is arranged between the isolating device 19 and the right flange 18, and one end setting of poroid air inlet pipe 3 is convex on the right side
In the through-hole of edge 18, the other end is arranged in the through-hole in isolating device 19；Poroid air inlet pipe 3 is with several air inlets
Pipe, one end of Oil/Gas Pipe 2 are arranged in the through-hole of isolating device 19, and the other end is connected with ground gas collecting apparatus；The detonation dress
Setting further includes three combination energy-gathering devices, and the three combinations energy-gathering device includes gathering the left side that explosive charge energy centralization projects to the right
14 can be covered, the right energy gathering cap 7 that projects explosive charge energy centralization to the left, projected to center explosive charge energy centralization
Energy gathering cap 10, the left flange 13 and casing 17 that left 14 left side of energy gathering cap is set；
The left energy gathering cap 14 includes left concave outer surface 11 and left concave inside surface 12, left 11 He of concave outer surface
The left concave inside surface 12 is the paraboloid of revolution of outward opening, and the paraboloid of revolution of the left concave inside surface 12 is formed
Cavity；The maximum outside diameter of the left energy gathering cap 14 is Da, the length of the left energy gathering cap 14 is La；
The right energy gathering cap 7 includes right concave outer surface 5 and right concave inside surface 6, the right concave outer surface 5 and described
Right concave inside surface 6 is the paraboloid of revolution of outward opening, and the paraboloid of revolution of the right concave inside surface 6 forms cavity；
The maximum outside diameter of the right energy gathering cap 7 is Db, the length of the right energy gathering cap 7 is Lb；
The middle energy gathering cap 10 includes middle concave outer surface 8 and middle concave inner surface 9, and the middle concave outer surface 8 is by n
Geomery is identical and circumferentially equally distributed, outward opening cylinder forms, n 3,4,5,6,7 or 8；The middle concave
Inner surface 9 is identical by m geomery and circumferentially equally distributed, outward opening cylinder forms, m 3,4,5,6,7 or 8
And m=n；The cylinder of the middle concave inner surface 9 forms cavity；The maximum outside diameter of the middle energy gathering cap 10 is Dc, it is described in gather
The length that 10 can be covered is Lc；
Be cylindrical outside described sleeve pipe 17 and its inside be cylindrical hole, described sleeve pipe 17 sequentially passes through in the left spill
The cavity on surface 12, the cavity of middle concave inner surface 9, the cavity of right concave inside surface 6 and the through-hole of right flange 18, described sleeve pipe
17 one end are fixed on the right side of left flange 13, and 17 other end of described sleeve pipe is fixed on the right side of right flange 18；
Several initiators 20 are arranged in interval between the left flange 13 and right flange 18, and initiator 20 is existed by setting
Detonation chain 21 in described sleeve pipe 17 is connect with ground control unit, and controls rising for initiator 20 by ground control unit
It is quick-fried；.
The right side of the left flange 13 is provided with left boss, and the left boss is the spherical cap shape of outwardly convex, the left side
The height of projection of boss spherical cap shape is Ht, the maximum open part diameter of a circle of the left boss spherical cap shape is Dt；
The left side of the right flange 18 is provided with right boss, and the right boss is the spherical cap shape of outwardly convex, the right side
The height of projection of boss spherical cap shape is Ht, the maximum open part diameter of a circle of the right boss spherical cap shape is Dt；
The left boss of the left flange 13, the cavity of left energy gathering cap 13, the cavity of middle energy gathering cap 10, right energy gathering cap 7 sky
The right boss of chamber and right flange 18 forms an enclosure space, and explosive is arranged in the space.
The diameter DtFor explosive diameter D, the height HtFor 4mm~6mm.
Establish Oa-XaYaZaCoordinate system, Oa1-Xa1Ya1Za1Coordinate system, Oa2-Xa2Ya2Za2Coordinate system, Ob-XbYbZbCoordinate system,
Ob1-Xb1Yb1Zb1Coordinate system, Ob2-Xb2Yb2Zb2Coordinate system and Oc-XcYcZcCoordinate system is as follows:
Oa-XaYaZaThe coordinate origin of coordinate system is on the axis of the left energy gathering cap 14 and in the length of left energy gathering cap 14
Midpoint, XaAxis, YaAxis and ZaAxis constitutes right hand rectangular coordinate system, XaAxis is overlapped with the axis of the left energy gathering cap 14, XaAxis is just
The right side of left energy gathering cap 14 is directed toward from the left side of left energy gathering cap 14 in direction；xa、yaAnd zaRespectively XaAxis, YaAxis and ZaThe coordinate of axis
Variable；
Oa1-Xa1Ya1Za1The coordinate origin of coordinate system is in Oa-XaYaZaIt is (- b in coordinate system1,c1, 0), Xa1Axis, Ya1Axis and
Za1Axis constitutes right hand rectangular coordinate system, Za1Axis and ZaAxis is parallel, Xa1Axis and XaAxle clamp angle is θa；xa1、ya1And za1Respectively Xa1
Axis, Ya1Axis and Za1The coordinate variable of axis；
Oa2-Xa2Ya2Za2The coordinate origin of coordinate system is in Oa-XaYaZaIt is (- b in coordinate system2,c2, 0), Xa2Axis, Ya2Axis and
Za2Axis constitutes right hand rectangular coordinate system, Za2Axis and ZaAxis is parallel, Xa1Axis and XaAxle clamp angle is θa；xa2、ya2And za2Respectively Xa2
Axis, Ya2Axis and Za2The coordinate variable of axis；
Ob-XbYbZbThe coordinate origin of coordinate system is on the axis of the right energy gathering cap 7 and in the length of right energy gathering cap 7
Midpoint, XbAxis, YbAxis and ZbAxis constitutes right hand rectangular coordinate system, XbAxis is overlapped with the axis of the right energy gathering cap 7, XbAxis positive direction
The right side of right energy gathering cap 7 is directed toward from the left side of right energy gathering cap 7；xb、ybAnd zbRespectively XbAxis, YbAxis and ZbThe coordinate variable of axis；
Ob1-Xb1Yb1Zb1The coordinate origin of coordinate system is in Ob-XbYbZbIt is (b in coordinate system1,c1, 0), Xb1Axis, Yb1Axis and Zb1
Axis constitutes right hand rectangular coordinate system, Zb1Axis and ZbAxis is parallel, Xb1Axis and XbAxle clamp angle is θb；xb1、yb1And zb1Respectively Xb1Axis,
Yb1Axis and Zb1The coordinate variable of axis；
Ob2-Xb2Yb2Zb2The coordinate origin of coordinate system is in Ob-XbYbZbIt is (b in coordinate system2,c2, 0), Xb2Axis, Yb2Axis and Zb2
Axis constitutes right hand rectangular coordinate system, Zb2Axis and ZbAxis is parallel, Xb1Axis and XbAxle clamp angle is θb；xb2、yb2And zb2Respectively Xb2Axis,
Yb2Axis and Zb2The coordinate variable of axis；
Oc-XcYcZcThe coordinate origin of coordinate system is on the axis of the middle energy gathering cap 10 and in the length of middle energy gathering cap 10
Midpoint, XcAxis, YcAxis and ZcAxis constitutes right hand rectangular coordinate system, XcAxis is overlapped with the axis of the middle energy gathering cap 10, XcAxis is just
Direction therefrom energy gathering cap 10 left side be directed toward in energy gathering cap 10 right side；xc、ycAnd zcRespectively XcAxis, YcAxis and ZcThe coordinate of axis
Variable.
XaAxis, XbAxis and XcAxis is conllinear.
The rotary shaft of the left concave outer surface 11 is XaAxis, the bus of the left concave outer surface 11 is bus A, described
Bus A is around the XaAxis rotates to form the left concave outer surface 11, and the bus A is the parabolic being made of following equation group
Line:
The rotary shaft of the left concave inside surface 12 is XaAxis, the bus of the left concave inside surface 12 is bus B, described
Bus B is around the XaAxis rotates to form the left concave inside surface 12, and the bus B is the parabolic being made of following equation group
Line:
The rotary shaft of the right concave outer surface 5 is XbAxis, the bus of the right concave outer surface 5 are bus C, the mother
Line C is around the XbAxis rotates to form the right concave outer surface 5, and the bus C is the parabola being made of following equation group:
The rotary shaft of the right concave inside surface 6 is XbAxis, the bus of the right concave inside surface 6 are bus D, the mother
Line D is around the XbAxis rotates to form the right concave inside surface 6, and the bus D is the parabola being made of following equation group:
A cylinder in n cylinder of the middle concave outer surface 8 is cylinder E, and the straight edge line of the cylinder E is parallel to
XcThe directrix of axis, the cylinder E is directrix E22, and the straight edge line of the cylinder E moves in parallel to form institute along the directrix E22
Cylinder E is stated, the directrix E22 is the parabola being made of following equation:
yc=a3+b3zc 2； (15)
A cylinder in m cylinder of the middle concave inner surface 9 is cylinder F, and the straight edge line of the cylinder F is parallel to
XcThe directrix of axis, the cylinder F is directrix F23, and the straight edge line of the cylinder F moves in parallel to form institute along the directrix F23
Cylinder F is stated, the directrix F23 is the parabola being made of following equation:
yc=a4+b4zc 2； (16)
In various above:
DaAnd DbIt is equal and be D, LaAnd LbIt is equal and be L, θa=-θ, θb=θ；
D is 280mm~320mm, and L is 380mm~420mm, and θ is 40 °~50 °；
DcFor 280mm~320mm, LcFor 380mm~420mm；
H is the minimum wall thickness (MINI W.) of left energy gathering cap, middle energy gathering cap and right energy gathering cap, and H is 1mm~3mm；
a1、b1、c1、a2、b2、c2For parameter, c1It is 0.2~0.3 times of D, c2It is 0.15~0.25 times and c of D1>c2；
The n cylinder (middle concave outer surface 8 or middle concave inner surface 9) of middle energy gathering cap 10 is outer by the maximum of middle energy gathering cap 10
Garden n equal part, equal part arc length areDcFor the maximum outside diameter of middle energy gathering cap 10, it is contemplated that the performance of middle energy gathering cap 10
It is required that and manufacture craft require etc., choose
a3、b3、a4And b4For parameter, a3For Dc0.2~0.3 times, a4For Dc0.15~0.25 times and a3>a4；
Known parabola is by vertex (0, a3, 0) and other two points (0,), (0,), then rule of thumb, b3、b4It is calculated by following formula:
In formula: e3、e4For coefficient, e3For 0.7~0.9, e4For 0.9~1.1 and e4>e3。
The major parameter of right energy gathering cap 7 is defined below.
The parabola mistake of the right concave outer surface 5 of right energy gathering cap 7WithTwo o'clock, it may be assumed that whenWhen,WhenWhen,It brings into after set of equations (13) arrange and obtains:
It solves above equation group (17) and obtains a1、b1Value and a1> 0, to guarantee parabola outward opening, therefore it is required that a1>
0；
The minimum wall thickness (MINI W.) of right energy gathering cap 7 is H, then the 6 parabola mistake of right concave inside surface of right energy gathering cap 7WithTwo o'clock, it may be assumed that whenWhen,WhenWhen,It brings into after set of equations (14) arrange and obtains:
It solves above equation group (18) and obtains a2、b2Value and a2> 0, to guarantee parabola outward opening, therefore it is required that a2>
0；
In the present embodiment, θ=45 ° are chosen, then are had: θa=-45 °, θb=45 °；Due to sin45 °=cos45 °, then equation
Group (17) is transformed to equation group (19):
In equation group (19), P1、Q1Calculation formula are as follows:
P1=D-L-2c1； (20)
Q1=D+L-2c1； (21)
Solve system of equation (19), casts out b1< 0 solution can be obtained with guaranteeing parabola outward opening:
Similarly, θ=45 ° are chosen, then are had: θa=-45 °, θb=45 °；Due to sin45 °=cos45 °, then equation group (18)
It is transformed to equation group (23):
In equation group (23), P2、Q2Calculation formula are as follows:
P2=D-L-2c2-2H； (24)
Q2=D+L-2c2-2H； (25)
Solve system of equation (23), casts out b2< 0 solution can be obtained with guaranteeing parabola outward opening:
In the present embodiment, each parameter or coefficient are specifically chosen and are solved as follows:
It chooses: D=300mm, L=400mm, La=400mm, Lb=400mm, takes c1For the 0.2 times i.e. c of D1=60mm, takes
c2For the 0.15 times i.e. c of D2=45mm, H=2mm is calculated according to (22) and (26):
b1=179.0724809mm, a1=0.007938555mm；
b2=184.116701mm, a2=0.008717154mm.
The major parameter of right energy gathering cap 7 determined above.Left energy gathering cap 14 is left-right symmetric relation with right energy gathering cap 7, because
This, the major parameter of left energy gathering cap 14 also determines therewith.
The major parameter of middle energy gathering cap 10 is defined below.
The present embodiment is chosen: n=4, m=4, Dc=D, that is, Dc=300mm, Lc=L, that is, Lc=400mm, takes a3For Dc0.2
I.e. a again3=60mm, takes a4For Dc0.15 times i.e. a4=45mm and meet a3>a4, take e3=0.8 and e4=1.0 and meet e4>
e3, it brings formula (16-1), (16-2) and (16-3) into respectively, obtains:
The technical solution of the present embodiment and its major parameter determination finish as a result,.
Embodiment two.
The directrix E22 is circular arc, loaded length L of the circular arc center of circle in middle energy gathering cap 10cMiddle position and with the Xc
The distance of axis is Lc1, arc radius Rc1；
The directrix F23 is circular arc, loaded length L of the circular arc center of circle in middle energy gathering cap 10cMiddle position and with the Xc
The distance of axis is Lc2, arc radius Rc2；
According to known chord length LcWith sagitta Hc1、Hc2Seek radius Rc1、Rc2Formula, Rc1、Rc2、Lc1And Lc2Following public affairs are pressed respectively
Formula calculates:
Hc1And Hc2It is sagitta, Hc1For charge diameter Dc0.1~0.3 times, Hc2For charge diameter Dc0.11~0.31
Times and Hc2>Hc1。
The present embodiment is chosen: n=4, m=4, Dc=D, that is, Dc=300mm, Lc=L, that is, Lc=400mm, takes Hc1For Dc0.2
I.e. H againc1=60mm, takes Hc2For Dc0.22 times i.e. Hc2=66mm and meet Hc2>Hc1Bring into respectively formula (27), (28),
(29), (30) and (31), obtain:
The technical solution of the present embodiment and its major parameter determination finish as a result,.
Embodiment two is the middle concave outer surface 8 of middle energy gathering cap 10 and middle concave inner surface 9 with one difference of embodiment
Shape of generatrix it is different.
The comprehensive Mohaupt effect of above embodiments is preferable.
According to Mohaupt effect, after explosive charge, explosion product is at high temperature under high pressure substantially along explosive normal to a surface side
To what is dispersed outward, therefore, explosive with groove will appear one is converged, speed and pressure after ignition in recess axis
Strong all very high explosion product stream, the explosion energy in a certain range releasing explosive charge are put together.This hair
The outer surface of bright left energy gathering cap 14 and right energy gathering cap 7 and inner surface are the paraboloid of revolution, bus A, bus B, bus C and mother
Line D is parabola, and the rotary shaft of the paraboloid of revolution has angle with these parabolical axis of symmetry；The throwing of left energy gathering cap 14
The axis of symmetry of object line forms left circular conical surface after the rotary shaft rotation of the paraboloid of revolution, right energy gathering cap 7 it is parabolical symmetrical
Axis forms right circular conical surface after the rotary shaft rotation of the paraboloid of revolution；Due to parabolical light characteristic, i.e., through the light of focus
For light ray parallel of the line after parabolic reflective in parabolical symmetry axis, this parabolical characteristic further enhances cumulative effect
It answers；The middle concave outer surface 8 of middle energy gathering cap 10 and middle concave inner surface 9 be identical by n or m (m=n) geomeries and edge
The cylinder composition of the outward opening of even circumferential distribution, in addition to the parabolic cylinder and circular arc cylinder of embodiment one and embodiment two
Outside, technical solution of the present invention can also be the cylinder of other outward openings such as hyperbolic cylinder and elliptic cylinder, it may have similar
Effect.The cumulative characteristic that there is these cylinders energy to assemble to n dimensional orientation；After explosive charge, left energy gathering cap 14 it is quick-fried
Fried energy, which is converged along left circular conical surface to space dextrad, to be projected, and the explosion energy of right energy gathering cap 7 is converged along right circular conical surface to a space left side
To injection, the explosion energy of middle energy gathering cap 10 is projected along n plane i.e. n interrupted space " a " font orientation convergences, and three
A direction in space (wherein intermediate orientation is n interrupted dimensional orientation) while the shale for squeezing explosive fracturing area, crackle are rapid
It is formed through the shale zone of fracture of " a " word shape, increases the specific surface area of shale, to effectively increase the solution of shale gas
Analyse rate and its recovery ratio.Simultaneously as the cumulative action of the outwardly convex of the left boss and right boss of spherical cap shape, further
Enhance Mohaupt effect.If the group of left energy gathering cap 14, middle energy gathering cap 10 and right energy gathering cap 7 be combined into down " a " font (θ < 0 °),
The combining forms such as " ///" shape, "/|/" shape, " // | " shape, " | |/" shape, " " shape, " | | | " shape, do not have the skill of 1+1+1 > 3
Art effect, combining form of the invention significantly reach the technical effect that 1+1+1 is much larger than 3.
It is gradually reduced for the wall thickness of the left energy gathering cap 14 of guarantee and the wall thickness of right energy gathering cap 7 from centre to two sides, it is desirable that c1>
c2；Similarly, the wall thickness for energy gathering cap 10 in guarantee is gradually reduced from centre to two sides, it is desirable that a3>a4。
Parameter c1、c2、a3、a4、e3、e4、Hc2、Hc1Value, should be selected according to performances such as the hardness of shale, parameter c1、c2、
a3、a4Value is smaller and Hc2、Hc1Value it is bigger, explosion energy convergence is more concentrated, and explosive fracturing area is deep and narrow, shale crackle length
It spends longer；Conversely, explosion energy convergence more dissipates, explosive fracturing area is wide and shallow, shale crackle length is shorter.c1It is the 0.2 of D
~0.3 times, c2It is 0.15~0.25 times and c of D1>c2；a3For Dc0.2~0.3 times, a4For Dc0.15~0.25 times and a3>
a4；e3For 0.7~0.9, e4For 0.9~1.1 and e4>e3, Hc1For charge diameter Dc0.1~0.3 times, Hc2For charge diameter Dc's
0.11~0.31 times and Hc2>Hc1。
The value of the performances selection parameter such as hardness according to shale θ, θ value is bigger, and explosive fracturing area is narrower, the easier pressure of shale
Broken, shale crackle length is shorter and the quantity of shale crackle is more；θ value is smaller, and explosive fracturing Qu Yuekuan, shale are more not easy to press
Broken, shale crackle length is longer and the quantity of shale crackle is fewer；θ value is 40 °~50 °, preferably: θ value is 45 °.
Other than the parabolic cylinder and circular arc cylinder of embodiment one and embodiment two, technical solution of the present invention be can also be
The cylinder of other outward openings such as hyperbolic cylinder and elliptic cylinder, it may have similar effect.
Left energy gathering cap 14, middle energy gathering cap 10 and right energy gathering cap 7 are made by the aluminium alloy of 7A09 model, and cost performance is most
It is good.
Left flange 13 and right flange 18 are made by 4350 steel alloys, and cost performance is best.
Described sleeve pipe 17 is made by HP9-4-20 type high temperature resistant stainless steel pipe, and cost performance is best.
A kind of cylinder three disclosed in this invention combines the device that cumulative pressure break increases shale gas recovery ratio, in production,
Explosive is put into priming device in advance, then whole device is arranged in shale gas well naked eye 1 again；Initiator 20 includes
Electric cap, digital primer etc., detonation mode include electric initiating, digital detonation etc.；The explosive includes liquid explosives, solid explosive
Deng.
Above embodiments are primary structure of the invention, form parameter, remaining CONSTRUCTED SPECIFICATION is common according to this professional domain
Common technical knowledge and conventional techniques are designed and select.
Claims (9)
1. a kind of cylinder three combines the device that cumulative pressure break increases shale gas recovery ratio, described device is arranged in shale gas well naked eye
In, described device includes priming device and air transporting arrangement, and priming device is for bursting apart surrounding shale, gas conveying
Device will be transported to ground by the shale gas oozed out in the shale that is burst apart, and the priming device includes detonation chain and detonation
Device, the air transporting arrangement include right flange, isolating device, Oil/Gas Pipe, poroid air inlet pipe；The poroid air inlet pipe setting exists
Between the isolating device and the right flange, one end of poroid air inlet pipe is arranged in the through-hole of the right flange, the other end
It is arranged in the through-hole in isolating device；Poroid air inlet pipe be the pipe with several air inlets, Oil/Gas Pipe one end setting every
From in the through-hole of device, the other end is connected with ground gas collecting apparatus；It is characterized in that the priming device further includes that three combinations are poly-
Can device, the three combinations energy-gathering device includes the left energy gathering cap for projecting explosive charge energy centralization to the right, by explosive charge
Right energy gathering cap that energy centralization projects to the left, the middle energy gathering cap that explosive charge energy centralization is projected to center, setting are poly- on a left side
The left flange and casing in left side can be covered；
The left energy gathering cap includes left concave outer surface and left concave inside surface, in the left concave outer surface and the left spill
Surface is the paraboloid of revolution of outward opening, and the paraboloid of revolution of the left concave inside surface forms cavity；The left cumulative
The maximum outside diameter of cover is Da, the length of the left energy gathering cap is La；
The right energy gathering cap includes right concave outer surface and right concave inside surface, in the right concave outer surface and the right spill
Surface is the paraboloid of revolution of outward opening, and the paraboloid of revolution of the right concave inside surface forms cavity；The right cumulative
The maximum outside diameter of cover is Db, the length of the right energy gathering cap is Lb；
The middle energy gathering cap includes middle concave outer surface and middle concave inner surface, and the middle concave outer surface is by n geomery
Identical and circumferentially equally distributed, outward opening cylinder composition, n 3,4,5,6,7 or 8；The middle concave inner surface is by m
A geomery is identical and circumferentially equally distributed, outward opening cylinder forms, m 3,4,5,6,7 or 8 and m=n；Institute
The cylinder for stating middle concave inner surface forms cavity；The maximum outside diameter of the middle energy gathering cap is Dc, the length of the middle energy gathering cap is
Lc；
Be outside described sleeve pipe cylinder and its inside be cylindrical hole, described sleeve pipe sequentially passes through the sky of the left concave inside surface
Chamber, the cavity of middle concave inner surface, the cavity of right concave inside surface and right flange through-hole, described sleeve pipe one end is fixed on left convex
The right side of edge, the described sleeve pipe other end are fixed on the right side of right flange；
Left boss is provided on the right side of the left flange, the left boss is the spherical cap shape of outwardly convex, the left boss ball
The height of projection of crown shape is Ht, the maximum open part diameter of a circle of the left boss spherical cap shape is Dt；
Right boss is provided on the left of the right flange, the right boss is the spherical cap shape of outwardly convex, the right boss ball
The height of projection of crown shape is Ht, the maximum open part diameter of a circle of the right boss spherical cap shape is Dt；
The diameter DtFor explosive diameter D, the height HtFor 4mm~6mm.
2. a kind of cylinder three according to claim 1 combines the device that cumulative pressure break increases shale gas recovery ratio, feature
It is,
The rotary shaft of the left concave outer surface is XaThe bus of axis, the left concave outer surface is bus A, and the bus A is around institute
State XaAxis rotates to form the left concave outer surface, and the bus A is the parabola being made of following equation group:
The rotary shaft of the left concave inside surface is XaThe bus of axis, the left concave inside surface is bus B, and the bus B is around institute
State XaAxis rotates to form the left concave inside surface, and the bus B is the parabola being made of following equation group:
The rotary shaft of the right concave outer surface is XbThe bus of axis, the right concave outer surface is bus C, and the bus C is around institute
State XbAxis rotates to form the right concave outer surface, and the bus C is the parabola being made of following equation group:
The rotary shaft of the right concave inside surface is XbThe bus of axis, the right concave inside surface is bus D, and the bus D is around institute
State XbAxis rotates to form the right concave inside surface, and the bus D is the parabola being made of following equation group:
A cylinder in n cylinder of the middle concave outer surface is cylinder E, and the straight edge line of the cylinder E is parallel to XcAxis,
The directrix of the cylinder E is directrix E, and the straight edge line of the cylinder E moves in parallel to form the cylinder E, institute along the directrix E
State the curve that directrix E is outward opening；
A cylinder in m cylinder of the middle concave inner surface is cylinder F, and the straight edge line of the cylinder F is parallel to XcAxis,
The directrix of the cylinder F is directrix F, and the straight edge line of the cylinder F moves in parallel to form the cylinder F, institute along the directrix F
State the curve that directrix F is outward opening；
In various above:
Oa-XaYaZaThe midpoint of length of the coordinate origin of coordinate system on the axis of the left energy gathering cap and in left energy gathering cap, Xa
Axis, YaAxis and ZaAxis constitutes right hand rectangular coordinate system, XaAxis is overlapped with the axis of the left energy gathering cap, XaAxis positive direction is poly- from a left side
It is directed toward the right side of left energy gathering cap in the left side that can be covered；xa、yaAnd zaRespectively XaAxis, YaAxis and ZaThe coordinate variable of axis；
Oa1-Xa1Ya1Za1The coordinate origin of coordinate system is in Oa-XaYaZaIt is (- b in coordinate system1,c1, 0), Xa1Axis, Ya1Axis and Za1Axis
Constitute right hand rectangular coordinate system, Za1Axis and ZaAxis is parallel, Xa1Axis and XaAxle clamp angle is θa；xa1、ya1And za1Respectively Xa1Axis, Ya1
Axis and Za1The coordinate variable of axis；
Oa2-Xa2Ya2Za2The coordinate origin of coordinate system is in Oa-XaYaZaIt is (- b in coordinate system2,c2, 0), Xa2Axis, Ya2Axis and Za2Axis
Constitute right hand rectangular coordinate system, Za2Axis and ZaAxis is parallel, Xa1Axis and XaAxle clamp angle is θa；xa2、ya2And za2Respectively Xa2Axis, Ya2
Axis and Za2The coordinate variable of axis；
Ob-XbYbZbThe midpoint of length of the coordinate origin of coordinate system on the axis of the right energy gathering cap and in right energy gathering cap, Xb
Axis, YbAxis and ZbAxis constitutes right hand rectangular coordinate system, XbAxis is overlapped with the axis of the right energy gathering cap, XbAxis positive direction is poly- from the right side
It is directed toward the right side of right energy gathering cap in the left side that can be covered；xb、ybAnd zbRespectively XbAxis, YbAxis and ZbThe coordinate variable of axis；
Ob1-Xb1Yb1Zb1The coordinate origin of coordinate system is in Ob-XbYbZbIt is (b in coordinate system1,c1, 0), Xb1Axis, Yb1Axis and Zb1Axis structure
At right hand rectangular coordinate system, Zb1Axis and ZbAxis is parallel, Xb1Axis and XbAxle clamp angle is θb；xb1、yb1And zb1Respectively Xb1Axis, Yb1Axis
And Zb1The coordinate variable of axis；
Ob2-Xb2Yb2Zb2The coordinate origin of coordinate system is in Ob-XbYbZbIt is (b in coordinate system2,c2, 0), Xb2Axis, Yb2Axis and Zb2Axis structure
At right hand rectangular coordinate system, Zb2Axis and ZbAxis is parallel, Xb1Axis and XbAxle clamp angle is θb；xb2、yb2And zb2Respectively Xb2Axis, Yb2Axis
And Zb2The coordinate variable of axis；
Oc-XcYcZcThe midpoint of length of the coordinate origin of coordinate system on the axis of the middle energy gathering cap and in middle energy gathering cap, Xc
Axis, YcAxis and ZcAxis constitutes right hand rectangular coordinate system, XcAxis is overlapped with the axis of the middle energy gathering cap, XcAxis positive direction is therefrom gathered
The right side of energy gathering cap in the left side direction that can be covered；xc、ycAnd zcRespectively XcAxis, YcAxis and ZcThe coordinate variable of axis；
XaAxis, XbAxis and XcAxis is conllinear；
DaAnd DbIt is equal and be D, LaAnd LbEqual and be L, the parameter θ is 40 °~50 °；
θa=-θ, θb=θ；
D is 280mm~320mm, and L is 380mm~420mm；
DcFor 280mm~320mm, LcFor 380mm~420mm；
H is the minimum wall thickness (MINI W.) of left energy gathering cap, middle energy gathering cap and right energy gathering cap, and H is 1mm~3mm；
a1、b1、c1、a2、b2、c2For parameter, c1It is 0.2~0.3 times of D, c2It is 0.15~0.25 times and c of D1>c2；
It solves following equation group and obtains a1、b1Value and a1> 0:
It solves following equation group and obtains a2、b2Value and a2> 0:
3. a kind of cylinder three according to claim 2 combines the device that cumulative pressure break increases shale gas recovery ratio, feature
It is, the parameter θ is 45 °, parameter a1、b1、a2、b2Pass sequentially through following formula calculating:
P1=D-L-2c1；
Q1=D+L-2c1；
P2=D-L-2c2-2H；
Q2=D+L-2c2-2H；
The parameter c1It is 0.2~0.3 times of D, c2It is 0.15~0.25 times and c of D1>c2, D is 200mm~500mm, and L is
300mm~600mm, radial minimum wall thickness (MINI W.) H are 1mm~3mm.
4. a kind of cylinder three according to claim 3 combines the device that cumulative pressure break increases shale gas recovery ratio, feature
It is, the directrix E and directrix F are all parabola or are all circular arc.
5. a kind of cylinder three according to claim 4 combines the device that cumulative pressure break increases shale gas recovery ratio, feature
It is, the directrix E is the parabola being made of following equation:
yc=a3+b3zc 2；
The directrix F is the parabola being made of following equation:
yc=a4+b4zc 2；
a3、b3、a4And b4For parameter, a3For Dc0.2~0.3 times, a4For Dc0.15~0.25 times and a3>a4, b3、b4By following
Formula calculates:
In formula: e3、e4For coefficient, e3For 0.7~0.9, e4For 0.9~1.1 and e4>e3。
6. a kind of cylinder three according to claim 4 combines the device that cumulative pressure break increases shale gas recovery ratio, feature
It is, the directrix E is circular arc, loaded length L of the circular arc center of circle in middle energy gathering capcMiddle position and with the XcAxis away from
From for Lc1, arc radius Rc1；
The directrix F is circular arc, loaded length L of the circular arc center of circle in middle energy gathering capcMiddle position and with the XcThe distance of axis
For Lc2, arc radius Rc2；
Rc1、Rc2、Lc1And Lc2It calculates as follows respectively:
Hc1And Hc2It is sagitta, Hc1For charge diameter Dc0.1~0.3 times, Hc2For charge diameter Dc0.11~0.31 times and
Hc2>Hc1。
7. a kind of cylinder three according to claim 5 combines the device that cumulative pressure break increases shale gas recovery ratio, feature
It is, the parameter D=300mm, L=400mm, La=400mm, Lb=400mm, c1=60mm, c2=45mm, H=2mm, b1
=179.0724809mm, a1=0.007938555mm, b2=184.116701mm, a2=0.008717154mm；
N=4, m=4, Dc=D, Lc=400mm, a3=60mm, a4=45mm, e3=0.8, e4=1.0, Ld=209.132
Mm, b3=0.0055, b4=0.0069.
8. a kind of cylinder three according to claim 6 combines the device that cumulative pressure break increases shale gas recovery ratio, feature
It is, the parameter D=300mm, L=400mm, La=400mm, Lb=400mm, c1=60mm, c2=45mm, H=2mm, b1
=179.0724809mm, a1=0.007938555mm, b2=184.116701mm, a2=0.008717154mm；
N=4, m=4, Dc=300mm, Lc=400mm, Hc1=60mm, Hc2=66mm, Ld=209.132mm, Rc1=
121.117mm, Lc1=167.182mm, Rc2=115.834mm, Lc2=155.899mm.
9. a kind of according to claim 1, combination of cylinder three cumulative pressure break increase shale gas harvesting described in 2,3,4,5,6,7 or 8
The device of rate, which is characterized in that the left flange, left energy gathering cap, middle energy gathering cap, right energy gathering cap and right flange form a closing
Space, and explosive is set in the space.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810208903.7A CN108590618A (en) | 2018-03-14 | 2018-03-14 | A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio |
| CN2018102089037 | 2018-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109931044A true CN109931044A (en) | 2019-06-25 |
Family
ID=63626342
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810208903.7A Withdrawn CN108590618A (en) | 2018-03-14 | 2018-03-14 | A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio |
| CN201910190816.8A Pending CN109931044A (en) | 2018-03-14 | 2019-03-13 | A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810208903.7A Withdrawn CN108590618A (en) | 2018-03-14 | 2018-03-14 | A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108590618A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331570A (en) * | 2018-03-14 | 2018-07-27 | 重庆霓裳科技有限公司 | A kind of double combination cumulative pressure breaks of the paraboloid of revolution increase the device of shale gas recovery ratio |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85203131U (en) * | 1985-07-25 | 1986-10-22 | 淮南矿业学院 | Shape (in bore, two sides) charged cutter for engineering explosion |
| CN102168543A (en) * | 2011-03-17 | 2011-08-31 | 中国科学院力学研究所 | Method and apparatus of improving recovery efficiency of shale gas through a blast mode |
| CN103983153A (en) * | 2014-05-23 | 2014-08-13 | 中国科学技术大学 | Case circular discontinuous energy concentrating jet flow cracker |
| US20150345245A1 (en) * | 2014-05-29 | 2015-12-03 | William T. Bell | Shaped Charge Casing Cutter |
| CN106767182A (en) * | 2017-03-23 | 2017-05-31 | 中国科学技术大学 | A kind of explosion switch based on multiaspect energy-gathering jetting |
| CN107091600A (en) * | 2017-04-07 | 2017-08-25 | 安徽理工大学 | A kind of linear orientation jet cutter |
-
2018
- 2018-03-14 CN CN201810208903.7A patent/CN108590618A/en not_active Withdrawn
-
2019
- 2019-03-13 CN CN201910190816.8A patent/CN109931044A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85203131U (en) * | 1985-07-25 | 1986-10-22 | 淮南矿业学院 | Shape (in bore, two sides) charged cutter for engineering explosion |
| CN102168543A (en) * | 2011-03-17 | 2011-08-31 | 中国科学院力学研究所 | Method and apparatus of improving recovery efficiency of shale gas through a blast mode |
| CN103983153A (en) * | 2014-05-23 | 2014-08-13 | 中国科学技术大学 | Case circular discontinuous energy concentrating jet flow cracker |
| US20150345245A1 (en) * | 2014-05-29 | 2015-12-03 | William T. Bell | Shaped Charge Casing Cutter |
| CN106767182A (en) * | 2017-03-23 | 2017-05-31 | 中国科学技术大学 | A kind of explosion switch based on multiaspect energy-gathering jetting |
| CN107091600A (en) * | 2017-04-07 | 2017-08-25 | 安徽理工大学 | A kind of linear orientation jet cutter |
Non-Patent Citations (2)
| Title |
|---|
| 张志呈编著: "《定向断裂控制爆破》", 31 May 2000, 重庆出版社 * |
| 郑玉敏等: "《高等数学基础》", 31 August 2014, 上海交通大学出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108590618A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9612093B2 (en) | Axilinear shaped charge array | |
| CN108487895A (en) | A kind of circular arc cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN109931044A (en) | A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN108590619A (en) | A kind of circular arc cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN109944577A (en) | A kind of surface of revolution three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN109798098A (en) | A kind of double combination cumulative pressure breaks of the paraboloid of revolution increase the device of shale gas recovery ratio | |
| CN108361012A (en) | A kind of arc surface three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN108487890A (en) | A kind of parabolic cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN108487889A (en) | A kind of paraboloid of revolution three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN201007199Y (en) | Bundling perforator | |
| CN108487894A (en) | A kind of surface of revolution three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN108331567A (en) | A kind of parabolic cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN108487891A (en) | A kind of double combination cumulative pressure breaks of the paraboloid of revolution increase the device of shale gas recovery ratio | |
| CN108412476A (en) | A kind of paraboloid of revolution three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN109707351A (en) | A kind of Novel pressure-resistant perforation through tubing bullet | |
| CN108361013A (en) | A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN108571311A (en) | A kind of parabolic cylinder cumulative pressure break increases the device of shale gas recovery ratio | |
| CN108571309A (en) | A kind of arc surface three combines the device of cumulative pressure break increase shale gas recovery ratio | |
| CN109812252A (en) | A kind of surface of revolution cumulative pressure break increases the device of shale gas recovery ratio | |
| CN109812253A (en) | A kind of cylinder cumulative pressure break increases the device of shale gas recovery ratio | |
| CN108487893A (en) | A kind of circular arc cylinder cumulative pressure break increases the device of shale gas recovery ratio | |
| CN108612512A (en) | A kind of paraboloid of revolution cumulative pressure break increases the device of shale gas recovery ratio | |
| CN108612510A (en) | A kind of oblique paraboloid cumulative pressure break of rotation increases the device of shale gas recovery ratio | |
| CN108457635A (en) | A kind of oblique paraboloid cumulative pressure break of rotation increases the device of shale gas recovery ratio | |
| CN108331568A (en) | A kind of surface of revolution cumulative pressure break increases the device of shale gas recovery ratio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190625 |