CN107060701A - A kind of many cluster seam net perforators - Google Patents
A kind of many cluster seam net perforators Download PDFInfo
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- CN107060701A CN107060701A CN201710172202.8A CN201710172202A CN107060701A CN 107060701 A CN107060701 A CN 107060701A CN 201710172202 A CN201710172202 A CN 201710172202A CN 107060701 A CN107060701 A CN 107060701A
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- 238000010304 firing Methods 0.000 claims abstract description 26
- 239000004744 fabric Substances 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 238000005755 formation reaction Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003466 welding 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
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of many cluster seam net perforators, structure includes body of perforating gun, positioning disk, firing mount, perforating bullet.The perforator is applied after fine and close oil and gas reservoir perforation, and many cluster seam mesh eyes are produced in the earth formation, maximum stress concentration, hydraulic fracturing reduction formation fracture pressure easily for the later stage is produced.And can be according to different earth formations, the perforation for carrying out stress concentration face is suitably adjusted, and is suitable for the personalized perforation construction to different geologic structure wells.
Description
Technical field
The present invention is applied to fine and close oil, the exploitation of gas, and in particular to one kind can produce many cluster seams in fine and close oil, gas reservoir
Net and stratum realize that net perforators are stitched in good communication, a kind of perforator for producing multiple stress planes concentrations in the earth formation-many clusters.
Background technology
In fine and close oil, the exploitation of gas, because stratum is extremely fine and close, single perforation or hydraulic fracturing can not all produce pre-
Phase goes out oil gas effect.It is generally necessary to first produce duct in the earth formation after reservoir carries out common perforation, perforation, shape is possible to
Into the effective communication with stratum, hydraulic fracturing is carried out again afterwards.The purpose of hydraulic fracturing, is desirable to rich in oil, gas reservoir generation
The netted various crack of rich seam, forms various network structures, to reach the effective communication with hydrocarbon stratum reservoir.
The perforation generally carried out is common perforating methods.At present, in the general perforating technology of every country, perforator
Perforation phase is 90 degree or 60 degree of phases, right-hand screw phase distribution, every meter of 16 holes.
In the perforating job to fine and close oil and gas reservoir, the problem of perforating modes expose is：Perforating bullet is along perforating gun
Perforation is evenly distributed, in larger distance between the bullet between perforating bullet in same perforation phase, in the stratum of perforation, is difficult
Stress concentration is produced in stratum, in the stratum for needing to carry out pressure break, because the situation without stress concentration, the later stage is carried out
Hydraulic fracturing is difficult pressure break when constructing and turned up the soil layer, to a certain extent, namely is not readily reachable by the good communication on perforation and stratum
Seam web frame is formed, thus is difficult to reach fine and close oil, the effect of gas volume increase.
The content of the invention
Present invention solves the technical problem that being：In view of the shortcomings of the prior art, the present invention provides a kind of in the storage of fine and close oil gas
After layer perforation, many cluster seam mesh eyes are produced in the earth formation, maximum stress concentration is produced, is easily dropped for the hydraulic fracturing in later stage
A kind of perforator of low formation fracture pressure-many cluster seam net perforators.
The technical scheme is that：A kind of many clusters seam net perforator, including body of perforating gun 1, positioning disk 2, firing mount 3 and penetrate
Hole bullet 4, firing mount 3 is tubular body, and it is located in body of perforating gun 1, be provided with the side wall of firing mount 3 it is some shoot hole, and some shoot hole
It is in spiral distribution；The two ends of firing mount 3 are connected with positioning disk 2 respectively；Every meter is at least provided with 14 and shoots hole, every 7 on the firing mount 3
Hole is shot for cluster, n clusters (n=1,2,3 ...) are formed；Last shoots hole and shoots hole same-phase distribution with previous；It is fixed
What justice shot axially bored line and the axis perpendicular of firing mount 3 shoots hole for straight hole, shoots shooting for axially bored line and the axis out of plumb of firing mount 3
Hole is inclined hole；Perforating bullet 4, which is located at, to be shot in hole, and the axis of perforating bullet 4 overlaps with shooting axially bored line, edge when perforating bullet 4 is projected
The axis is projected；The hole that shoots in per cluster arranges as follows：
First, which shoots hole 5 and the 3rd, shoots hole 7 for inclined hole, and second shoots hole 6 for straight hole, three perforating bullets for shooting in hole
Jet, which is formed after projecting on three straight lines, three straight lines, to be respectively present a bit, at certain moment, in the radial direction perpendicular to body of perforating gun 1
It is coplanar at a certain position of radius, form stress plane one；
Second, which shoots hole the 6, the 4th, shoots hole 8 and the 6th and shoots the distribution of hole 10 same-phase, and the 4th, which shoots hole 8 and the 6th, shoots
Hole 10 is straight hole or inclined hole, when for inclined hole, and the 4th, which shoots hole 8 and the 6th, shoots perforation ejection stream in hole 10 vertical
In a certain intersection of radial direction radius of body of perforating gun 1, and second shoots perforating bullet fluidic vectoring thrust stress plane two in hole 6；When
During for straight hole, three axially bored lines are parallel to each other, perforating bullet fluidic vectoring thrust stress plane two in three holes；
5th, which shoots hole the 9, the 7th, shoots hole 11 and the 3rd and shoots the distribution of hole 7 same-phase, and the 5th, which shoots hole 9 and the 7th, shoots
Hole 11 is straight hole or inclined hole, when for inclined hole, and the 5th, which shoots hole 9 and the 7th, shoots perforation ejection stream in hole 11 vertical
In a certain intersection of radial direction radius of body of perforating gun 1, and the 3rd shoots the perforating bullet fluidic vectoring thrust stress plane three of hole 7；When for
During straight hole, three axially bored lines are parallel to each other, perforating bullet fluidic vectoring thrust stress plane three in three holes；Therefore the jet of perforating bullet 4 in cluster
Three stress planes are formed during injection, three is formed and stitches net.
Invention effect
The technical effects of the invention are that：1) after every meter of many cluster seam net perforator perforations, many clusters, Duo Geying can be formed
Power concentrates face, forms the new perforator structure of multiple seam nets, is conducive to the hydraulic fracturing in later stage, and without hydraulic fracturing
In the case of, it also can reach the good communication with stratum；2) according to different earth formations, the perforation that can carry out stress concentration face is fitted
Work as adjustment, be suitable for the personalized perforation construction to different geologic structure wells.
Brief description of the drawings
The many schematic diagrames of cluster seam net perforator structure 1 of Fig. 1；
The many schematic diagrames of cluster seam net perforator structure 2 of Fig. 2；
Description of reference numerals：1- body of perforating gun；2- positioning disks；3- firing mounts；4- perforating bullets；5- first shoots hole；6- second
Shoot hole；7- the 3rd shoots hole；8- the 4th shoots hole；9- the 5th shoots hole；10- the 6th shoots hole；11- the 7th shoots hole；12-
Second cluster first shoots hole；13- circular holes；14- dowel holes.
Embodiment
1st, referring to accompanying drawing, a kind of many cluster seam net perforators, including body of perforating gun 1, positioning disk 2, firing mount 3, perforating bullet 4, institute
State the inner chamber of gun body 1 and be equipped with firing mount 3, the upper/lower terminal of firing mount 3 is connected by screw or welding manner with positioning disk 2 respectively；This implementation
In example, described every meter of cloth of firing mount 3 15 shoots hole, each shoots one launch hole bullet 4 of installation in hole, from top to bottom adjacent seven transmitting
Hole bullet 4 constitutes cluster, has two clusters.15th launch hole bullet 4 perforating bullet 4 adjacent thereto shoots hole cloth in same phase, and
Cloth is straight hole.Wherein, first hole 5 is shot, second hole the 6, the 3rd is shot and shoots the screw arrangement to the right of hole 7, phase angle [alpha] is set to 0 ° of ＜
180 ° of α ＜, first, which shoots hole 5 and the 3rd, shoots the cloth of hole 7 for inclined hole, and second shoots the cloth of hole 6 for straight hole, and first shoots hole 5 and the
Three shoot hole 7 assembling perforating bullet 4 according to predetermined angular perforation, can the radial direction radius 200 perpendicular to body of perforating gun 1~
At a certain positions of 500mm, the point shot with second on the jet of perforating bullet 4 of the assembling of hole 6 forms coplanar；4th shoots hole the 8, the 6th
Shoot hole 10 and second and shoot the cloth of hole 6 in same phase；5th, which shoots hole the 9, the 7th, shoots hole 11 and shoots the cloth of hole 7 same with the 3rd
One phase.
The firing mount 3 has two kinds of structures, and a kind of structure is the 4th to shoot hole the 8, the 6th and shoot the cloth of hole 10 for inclined hole, assembling
Perforating bullet 4 is according to predetermined angular perforation, the jet energy at a certain positions of 300~600mm of radial direction radius perpendicular to body of perforating gun 1
It is enough intersecting；5th, which shoots hole 9 and the 7th, shoots the cloth of hole 11 for inclined hole, and the perforating bullet 4 of assembling is according to predetermined angular perforation, vertical
Jet can intersect at a certain positions of 300~600mm of radial direction radius of body of perforating gun 1；Another structure is the 4th to shoot hole
8th, the 5th shoot hole the 9, the 6th and shoot hole the 10, the 7th and shoot the cloth of hole 11 for straight hole, the perforating bullet 4 of assembling is perpendicular to body of perforating gun 1
Perforation.Every meter of the firing mount 3 can install two cluster perforating bullets 4, and the first cluster the 7th shoots hole 11 and filled with the second cluster first from top to bottom
The angle β of shell hole 12 is set to 60 ° or 90 °, rotation direction dextrorotation.The body of perforating gun 1 is furnished with outer blind hole, and with shooting hole on firing mount 3
It is corresponding.The corresponding outer blind hole of straight hole is circular hole 13 on firing mount, and the corresponding outer blind hole of inclined hole is dowel hole 14.
2nd, reference picture 1, in perforator, first shoot hole 5, second shoot hole the 6, the 3rd shoot hole 7 assembling three transmittings
Hole bullet screw arrangement to the right, phase angle is 60 °, and pitch of holes is 60mm, and second shoots hole 6 for straight hole, and the perforating bullet 4 of assembling is vertical
Projected in perforating gun 1, first, which shoots hole 5 and the 3rd, shoots hole 7 for inclined hole, makes two by the perforation angle of adjustment assembly perforating bullet
Launch hole bullet 4 can shoot hole 6 with second and assemble at a certain position perpendicular to the 200~500mm of radial direction radius of perforating gun 1
The jet of perforating bullet 4 on point form coplanar, as shown in face one in Fig. 1, the face is vertical with perforating gun axial direction.4th shoots
Hole the 8, the 6th shoots hole 10 and the second three launch hole bullets for shooting the assembling of hole 6 are arranged in same phase, and pitch of holes is 120mm left
The right side, wherein the 4th shoots hole 8 and the 6th and shoot hole 10 for inclined hole, enables jet vertical by adjustment assembly perforating bullet firing angle
In a certain intersections of 300~600mm of radial direction radius of perforating gun 1, and three launch hole ejection streams are coplanar, such as the institute of face two in Fig. 1
Show, the face is vertical with perforating gun radial direction.5th, which shoots hole the 9, the 7th, shoots three transmittings that hole 11 and the 3rd shoots the assembling of hole 7
Hole bullet is arranged in same phase, and pitch of holes is 120mm or so, wherein the 5th shoots hole 9 and the 7th and shoot hole 11 for inclined hole, passes through
Adjustment assembly perforating bullet firing angle enables jet perpendicular to a certain intersections of 300~600mm of radial direction radius of perforating gun 1,
And three launch hole ejection stream it is coplanar, as shown in face three in Fig. 1, the face is vertical with perforating gun radial direction.From top to bottom adjacent seven
Launch hole bullet is that three perforation sections are distributed with cluster, the cluster, that is, produces three stress concentration faces, forms three seam nets.Often
Rice perforator installs 15 launch hole bullets 4, altogether the cluster of cloth two, and the first cluster the 7th shoots the cluster first of hole 11 and second and shoots the angle β of hole 12
For 60 °, it is divided into two clusters and is furnished with six perforation sections, that is, produce six stress concentration faces, six seam nets can be formed.15th transmitting
The launch hole bullet 4 of hole bullet 4 and the 14th shoots hole cloth in same phase, and is straight hole, the vertical perforation of body of perforating gun 1.
3rd, reference picture 2, in perforator, first shoot hole 5, second shoot hole the 6, the 3rd shoot hole 7 assembling three transmittings
Hole bullet screw arrangement to the right, phase angle is 60 °, and pitch of holes is 60mm, and second shoots hole 6 for straight hole, and the perforating bullet 4 of assembling is vertical
Projected in perforating gun 1, first, which shoots hole 5 and the 3rd, shoots hole 7 for inclined hole, makes two by the perforation angle of adjustment assembly perforating bullet
Launch hole bullet 4 can shoot hole 6 with second and assemble at a certain position perpendicular to the 200~500mm of radial direction radius of perforating gun 1
The jet of perforating bullet 4 on point form coplanar, as shown in face one in Fig. 2, the face is vertical with perforating gun axial direction.4th shoots
Hole the 8, the 6th shoots hole 10 for straight hole, and shooting hole 6 with second is arranged in same phase, and pitch of holes is 120mm or so, and assemble
Three launch hole ejection streams are coplanar, as shown in face two in Fig. 2, and the face is vertical with perforating gun radial direction.5th shoots hole the 9, the 7th
Hole 11 is shot for straight hole, shooting hole 7 with the 3rd is arranged in same phase, pitch of holes is 120mm or so, and three launch hole ejection streams
Coplanar, as shown in face three in Fig. 2, the face is vertical with perforating gun radial direction.Adjacent seven launch holes bullet is cluster from top to bottom, should
Three perforation sections are distributed with cluster, that is, produce three stress concentration faces, three seam nets are formed.Every meter of perforator is installed 15 and launched
Hole bullet 4, cloth two cluster altogether, the first cluster the 7th, which shoots the cluster first of hole 11 and second and shoots the angle β of hole 12, to be set to be divided into 60 °, two clusters
Six perforation sections are furnished with, that is, produce six stress concentration faces, six seam nets can be formed.15th launch hole bullet the 4 and the 14th is launched
Hole bullet 4 shoots hole cloth in same phase, and is straight hole, the vertical perforation of body of perforating gun 1.
Claims (1)
1. a kind of many cluster seam net perforators, including body of perforating gun (1), positioning disk (2), firing mount (3) and perforating bullet (4), firing mount (3)
For tubular body, it is located in body of perforating gun (1), be provided with the wall of firing mount (3) side it is some shoot hole, and some holes that shoot helically are divided
Cloth；Firing mount (3) two ends are connected with positioning disk (2) respectively；Characterized in that, upper every meter of the firing mount (3) is at least provided with 14 dresses
Shell hole, every 7 shoot hole for cluster；Last shoots hole and shoots hole same-phase distribution with previous；Definition shoots axially bored line
The hole that shoots with firing mount (3) axis perpendicular is straight hole, and it is oblique to shoot axially bored line and the hole that shoots of firing mount (3) axis out of plumb
Hole；Perforating bullet (4), which is located at, to be shot in hole, and perforating bullet (4) axis overlaps with shooting axially bored line, edge when perforating bullet (4) is projected
The axis is projected；The hole that shoots in per cluster arranges as follows：
First shoots hole (5) shoots hole (7) for inclined hole with the 3rd, and second shoots hole (6) for straight hole, three perforations for shooting in hole
Ejection stream, which is formed after projecting on three straight lines, three straight lines, to be respectively present a bit, at certain moment, perpendicular to body of perforating gun (1)
It is coplanar at a certain position of radial direction radius, form stress plane one；
Second shoot hole (6), the 4th shoot hole (8) and the 6th shoot hole (10) same-phase distribution, the 4th shoots hole (8) and the 6th
It is straight hole or inclined hole to shoot hole (10), when for inclined hole, and the 4th shoots hole (8) and the 6th shoots perforating bullet in hole (10)
Jet is in a certain intersection of radial direction radius perpendicular to body of perforating gun (1), and second shoots perforation ejection stream shape in hole (6)
Into stress plane two；When for straight hole, three axially bored lines are parallel to each other, perforating bullet fluidic vectoring thrust stress plane two in three holes；
5th shoot hole (9), the 7th shoot hole (11) and the 3rd shoot hole (7) same-phase distribution, the 5th shoots hole (9) and the 7th
It is straight hole or inclined hole to shoot hole (11), when for inclined hole, and the 5th shoots hole (9) and the 7th shoots perforating bullet in hole (11)
Jet is in a certain intersection of radial direction radius perpendicular to body of perforating gun (1), and the 3rd shoots hole (7) perforating bullet fluidic vectoring thrust
Stress plane three；When for straight hole, three axially bored lines are parallel to each other, perforating bullet fluidic vectoring thrust stress plane three in three holes；Therefore in cluster
Perforating bullet (4) jet project when formed three stress planes, formed three stitch nets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710172202.8A CN107060701A (en) | 2017-03-22 | 2017-03-22 | A kind of many cluster seam net perforators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710172202.8A CN107060701A (en) | 2017-03-22 | 2017-03-22 | A kind of many cluster seam net perforators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107060701A true CN107060701A (en) | 2017-08-18 |
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ID=59620928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710172202.8A Pending CN107060701A (en) | 2017-03-22 | 2017-03-22 | A kind of many cluster seam net perforators |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412470A (en) * | 2018-06-05 | 2018-08-17 | 大庆金祥寓科技有限公司 | Orthogonal net stitches pressure break perforating system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100269676A1 (en) * | 2009-04-22 | 2010-10-28 | Schlumberger Technology Corporation | Wellbore perforating devices |
| CN203867533U (en) * | 2014-05-16 | 2014-10-08 | 大庆倍润德石油科技有限公司 | Fixed-perforation-surface perforator for oil and gas well |
| CN204238920U (en) * | 2014-11-24 | 2015-04-01 | 大庆倍润德石油科技有限公司 | Seam net pressure break normal surface perforator |
| CN104847315A (en) * | 2015-03-25 | 2015-08-19 | 大庆红祥寓科技有限公司 | Expansion composite perforating gun |
| CN207453942U (en) * | 2017-03-22 | 2018-06-05 | 西安物华巨能爆破器材有限责任公司 | A kind of more cluster seam net perforators |
-
2017
- 2017-03-22 CN CN201710172202.8A patent/CN107060701A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100269676A1 (en) * | 2009-04-22 | 2010-10-28 | Schlumberger Technology Corporation | Wellbore perforating devices |
| CN203867533U (en) * | 2014-05-16 | 2014-10-08 | 大庆倍润德石油科技有限公司 | Fixed-perforation-surface perforator for oil and gas well |
| CN204238920U (en) * | 2014-11-24 | 2015-04-01 | 大庆倍润德石油科技有限公司 | Seam net pressure break normal surface perforator |
| CN104847315A (en) * | 2015-03-25 | 2015-08-19 | 大庆红祥寓科技有限公司 | Expansion composite perforating gun |
| CN207453942U (en) * | 2017-03-22 | 2018-06-05 | 西安物华巨能爆破器材有限责任公司 | A kind of more cluster seam net perforators |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412470A (en) * | 2018-06-05 | 2018-08-17 | 大庆金祥寓科技有限公司 | Orthogonal net stitches pressure break perforating system |
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Application publication date: 20170818 |
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