CN2734993Y - Interlayered gun as perforator for oil-gas well - Google Patents
Interlayered gun as perforator for oil-gas well Download PDFInfo
- Publication number
- CN2734993Y CN2734993Y CN 200420086117 CN200420086117U CN2734993Y CN 2734993 Y CN2734993 Y CN 2734993Y CN 200420086117 CN200420086117 CN 200420086117 CN 200420086117 U CN200420086117 U CN 200420086117U CN 2734993 Y CN2734993 Y CN 2734993Y
- Authority
- CN
- China
- Prior art keywords
- gun
- central tube
- interlayer
- rifle
- joint
- 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.)
- Expired - Lifetime
Links
Landscapes
- Joints Allowing Movement (AREA)
Abstract
The utility model discloses an interlayer gun as perforator for oil-gas well, belonging to exploitation technical field for oil-gas well. The utility model has a cylindrical gun body which is provided with a central tube inside. The central tube is provided with a primacord. Both ends of the interlayer gun are provided with a joint in the gun which is a sealed structure. The gun body is provided with a through hole which cuts through the gun body from inside to outside. The sealed structure is provided between the central tube and the joint in the gun body. That is to say, the interlayer gun body of the utility model only has effect on linkage, however, the sealed function is achieved by the central tube and the joint in the gun body. Because the gun body is provided with the through hole which has an effect as a liquid channel, the gun body has no differential pressure inside and outside, without bearing operating pressure. Thus, the utility model can't be distorted caused by press, avoiding generation of clamp gun accident.
Description
Technical field
The utility model belongs to the oil gas well mining technical field, specifically a kind of oil-gas well perforator interlayer gun.
Background technology
In perforating oil gas well, one or more interlayer guns commonly used connect the perforating gun of two oil reservoirs between two oil reservoirs, so that finish the perforation of two oil reservoirs simultaneously.At present, the used rifle body of the interlayer gun of perforator should play interconnect function, also will play sealing, and the detonating fuse in the rifle body inner central tube plays a part to transmit detonation energy.Chinese patent CN1344858 discloses a kind of sandwiched perforating gun anti-pollution protecting method and device; interlayer gun wherein has a tubular rifle body; be provided with central tube in the rifle body; be provided with detonating fuse in the central tube; the rifle body of this interlayer gun and the junction of perforating gun or another interlayer gun seal by joint between rifle; that is, between the rifle body of this interlayer gun and the central tube be an airtight cavity.During perforation, perforator can form very high pressure when implementing blast or burning in pit shaft, and this pressure bears by the rifle body.Because in the existing interlayer gun rifle body is an airtight cavity, there is pressure reduction in the rifle inside and outside; In addition, the bearing capacity of existing interlayer gun rifle body is also limited.When higher or rifle inside and outside pressure reduction is big when operating pressure, tends to the flattening of interlayer gun rifle body or cause the moderate finite deformation of rifle body, interlayer gun is stuck in the pit shaft, cause card rifle accident.The thickness of interlayer is relevant between single interlayer gun length and oil reservoir, and along with the increase of single interlayer gun length, the bearing capacity of its rifle body reduces, and the interlayer gun rifle body youngster that is crushed is taken place cause the possibility of card rifle accident also can increase thereupon.
Summary of the invention
Technical problem to be solved in the utility model is improved existing perforator interlayer gun, provides a kind of and avoids because of the be crushed oil-gas well perforator interlayer gun of card rifle accident of interlayer gun.
The technical scheme that addresses the above problem is: the oil-gas well perforator interlayer gun that is provided has a tubular rifle body, be provided with central tube in the rifle body, be provided with detonating fuse in the central tube, the two ends of interlayer gun are provided with joint between the rifle of being with hermetically-sealed construction, improvements of the present utility model are that said interlayer gun rifle body is provided with the through hole that connects the rifle inside and outside, and said hermetically-sealed construction is located between central tube and rifle between the joint.That is, interlayer gun rifle body of the present utility model only plays interconnect function, and sealing is by realizing between the joint between central tube and rifle; Because the rifle body is provided with through hole, it plays a part the fluid passage, so its inside and outside no pressure reduction does not bear operating pressure, therefore, can not be out of shape because of pressurized; Operating pressure central tube then little by diameter, that bearing capacity is high bears, so the distortion of central tube is minimum when using.In addition,,, can not exceed this space even central tube deforms when using owing between central tube and the rifle body bigger space is arranged yet, behind the perforation interlayer gun external diameter constant substantially, promptly radial deformation is extremely small, thereby has avoided blocking the generation of rifle accident.
When operating pressure was higher, above-mentioned central tube can adopt thick-wall metal pipes, that is, the ratio of the external diameter of central tube and internal diameter is more than or equal to 1.2.
The through hole of above-mentioned perforation rifle inside and outside can be the through hole of manhole and other shape.
Above-mentioned hermetically-sealed construction can adopt hole grooved seal, axle grooved seal or taper thread sealing etc.
Compared with prior art, rifle body of the present utility model does not bear operating pressure, the high pressure that produces during perforation is born by the higher central tube of bearing capacity, even if central tube has a spot of distortion, also little to the influence of interlayer gun body, thereby the outside dimension of interlayer gun body keeps relative stability, avoided flattening the generation of phenomenon, guarantee safety of construction, can be used for composite gun perforation reliably, can also be used for the higher conventional perforating job of operating pressure.
Description of drawings
Fig. 1 is the constitutional diagram of interlayer gun of the present utility model and perforating gun.
Fig. 2 is the structure chart of an embodiment of the utility model.
Fig. 3 is the structure chart of another embodiment of the utility model.
The specific embodiment
As shown in Figure 1 and Figure 2: the related perforator of the utility model comprises interlayer gun 1 and perforating gun 2, is connected by joint between rifle 3 between the two.According to the thickness of interlayer between two oil reservoirs, need a plurality of interlayer guns to be connected in series sometimes, also be connected between each interlayer gun by joint between rifle.Interlayer gun 1 mainly comprises tubular rifle body 4, central tube 5 and is contained in detonating fuse 7 in the central tube 5.Insert between rifle in the joint 3 at the two ends of central tube 5, and and rifle between hermetically-sealed construction is set between the joint 3, the sealing structure can adopt a grooved seal structure 8, promptly offers sealed groove at the periphery of central tube 5; Also can adopt hole grooved seal structure 9, promptly the endoporus of joint 3 is offered sealed groove between rifle.Between rifle body 4 and rifle between the joint 3 for being threaded, opened four through holes 6 on the rifle body 4, the inner chamber and the outside of rifle body 4 connected.So 4 of rifle bodies play interconnect function, sealing is then by realizing between the joint 3 between central tube 5 and rifle.Pack between rifle in the joint 3 for the ease of central tube 5, also be provided with in rifle body 4 and set upright dish 10, it plays the centering effect when installing.Central tube 5 adopts thick walled steel tube in this example, and its external diameter is 34mm, and internal diameter is 16mm, and the critical external compressive resistance ability is greater than 140MPa.
As shown in Figure 3: central tube of the present utility model can also adopt the flexible nonmetallic tubing of pressure-bearing, be that central tube is made up of the metal tube 51 and the middle flexible nonmetallic tubing 52 at two ends, other structure is identical with a last embodiment, and hermetically-sealed construction wherein adopts the axle grooved seal.
Claims (5)
1, a kind of oil-gas well perforator interlayer gun, has a tubular rifle body (4), be provided with central tube (5) in the rifle body (4), be provided with detonating fuse (7) in the central tube (5), the two ends of interlayer gun are provided with joint (3) between the rifle of being with hermetically-sealed construction, it is characterized in that said interlayer gun rifle body (4) is provided with the through hole (6) that connects the rifle inside and outside, said hermetically-sealed construction is located between central tube (5) and rifle between the joint (3).
2, as the said interlayer gun of claim 1, it is characterized in that said central tube (5) adopts metal tube, the ratio of its external diameter and internal diameter is more than or equal to 1.2.
3,, it is characterized in that said hermetically-sealed construction adopts hole grooved seal or axle grooved seal structure as claim 1 or 2 said interlayer guns.
4,, it is characterized in that said central tube is made up of the metal tube (51) at two ends and middle flexible nonmetallic tubing (52) as the said interlayer gun of claim 1.
5,, it is characterized in that said hermetically-sealed construction adopts hole grooved seal or axle grooved seal structure as the said interlayer gun of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086117 CN2734993Y (en) | 2004-10-29 | 2004-10-29 | Interlayered gun as perforator for oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086117 CN2734993Y (en) | 2004-10-29 | 2004-10-29 | Interlayered gun as perforator for oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2734993Y true CN2734993Y (en) | 2005-10-19 |
Family
ID=35264869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420086117 Expired - Lifetime CN2734993Y (en) | 2004-10-29 | 2004-10-29 | Interlayered gun as perforator for oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2734993Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297727C (en) * | 2004-10-29 | 2007-01-31 | 西安通源石油科技股份有限公司 | Oil-gas well perforator interlayer gun |
-
2004
- 2004-10-29 CN CN 200420086117 patent/CN2734993Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297727C (en) * | 2004-10-29 | 2007-01-31 | 西安通源石油科技股份有限公司 | Oil-gas well perforator interlayer gun |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102031952A (en) | Multi-stage perforation supercharging method | |
| CN102022101A (en) | Multi-stage perforating pressurizing device | |
| CN201407423Y (en) | Double-metal composite bend pipe with both metallurgical bonding ends and mechanical bonding middle part | |
| CN105465443A (en) | Normally closed electric explosion valve | |
| CN2734993Y (en) | Interlayered gun as perforator for oil-gas well | |
| CN205331537U (en) | Normal close electric storm valve | |
| CN1297727C (en) | Oil-gas well perforator interlayer gun | |
| CN112392484B (en) | Carbon dioxide phase change fracturing permeability increasing device of immobile pipe column and working method | |
| CN201738852U (en) | Large-aperture and body-free explosive charge suitable for drilling rod perforation | |
| CN208073417U (en) | A kind of selective shut-off tool | |
| CN103225498B (en) | Multipole composite deep penetration perforation device | |
| CN207248000U (en) | A kind of carbon dioxide blasting arrangement | |
| CN2823548Y (en) | Non-gun body pressure-resistance perforating bullet | |
| CN202745833U (en) | Special priming device for continuous oil pipe conveying perforation | |
| CN201500723U (en) | Reliable-sealing hydraulic expanding rod device | |
| CN109386247A (en) | A kind of expandable casing patching time is slotting every tool of adopting and application method | |
| CN2878665Y (en) | Inner blind hole composite gun perforator for oil/gas well gun perforating device | |
| CN211500585U (en) | Soluble metal sealing card seat | |
| CN208364108U (en) | A kind of downhole oil-gas separation device | |
| CN200968200Y (en) | Multi-level pulse perforating peak pressure controlling valve | |
| CN208718636U (en) | A kind of high pressure resistant explosion fracturing interlayer explosion propagation device | |
| CN2739356Y (en) | Perforator sandwich gun | |
| CN201696011U (en) | Dynamic negative pressure axial starting device | |
| CN202249789U (en) | Ultrahigh pressure drill bit system for underground supercharger | |
| CN213392114U (en) | Structure of perforation interlayer gun and intermediate joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20041029 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |