CN2059181U - Pressure cracking device for oil layer - Google Patents
Pressure cracking device for oil layer Download PDFInfo
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- CN2059181U CN2059181U CN 89213979 CN89213979U CN2059181U CN 2059181 U CN2059181 U CN 2059181U CN 89213979 CN89213979 CN 89213979 CN 89213979 U CN89213979 U CN 89213979U CN 2059181 U CN2059181 U CN 2059181U
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- high pressure
- electrical connector
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Abstract
The utility model relates to a pressure cracking device for oil layers, comprising a salvaging ring, an electric apparatus joint, an epoxy glass cloth pipe section, a coupling and a tail end plug, so pipe casings with difference length can be formed, and the utility model can be filled with various slow burning gun powder and propellant. The utility model has high compressive strength and good leaking proof performance, which is suitable for exploitation and fracturing process within 3000 meters casing wells and open holes, and the effect is equal to medium scale hydraulic fracturing. The utility model has the advantages of matching with a general oilfield device, convenient operation, safety use, low cost and reusable salvaging ring and electric apparatus joint.
Description
The utility model relates to a kind of instrument of pressure break oilbearing stratum, the instrument that uses in the well stimulation of particularly a kind of oil and natural gas well.
The detonation pressure break is a kind of well stimulation of petroleum and natural gas well.China's utility model patent 87215505 discloses a kind of Pressure breaking bullet that makes subterranean strata produce the crack.Its weak point is: shell is the rigid plastic of polyvinyl chloride pipe, and compressive resistance is not high, terminal position epoxy sealing, and electrical insulation capability is poor in water under high pressure, easily seepage takes place and loses efficacy.So, only can be used in the open hole well about 300 meters.
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, provides a kind of at 3000 meters detonation fracturing devices that use in interior cased well with fluid column and open hole well.
The purpose of this utility model is achieved in that shell is a phenolic aldehyde expoxy glass stringing, the compressive resistance height.Terminal uses the high pressure sealing connector, to keep the excellent electric insulating energy.Multiple slowly gunpowder of speed or propellant are fired in filling, and produce the speed of high energy gas with different charge constitution control.Have and salvage ring, can with the supporting use of oil field equipment, on-the-spot easy to use.
The utility model is described in further detail below with reference to accompanying drawings and in conjunction with the embodiments.
Fig. 1 is the section of structure of oil reservoir detonation fracturing equipment.Fig. 2 is the sectional drawing with the electrical connector part of salvaging ring.(5) be the shell pipeline section, be phenolic aldehyde expoxy glass stringing.Utilize box cupling (7) that the shell pipeline section of same length is linked to be the shell of different length, to satisfy the needs of different-thickness oil reservoir.Box cupling and display pipe are intersegmental by the screwed connection that scribbles bonding agent.The shell lower end is sealed by tail plug (9).As required, can load combustion various slowly gunpowder of speed or propellant charge (8) in the different pipe sections.The housing upper end is steel electrical connector (3), utilizes the screw thread that scribbles cementing agent to be connected with shell.Electrical connector has two holes, inserts two high pressure sealing connectors (2) respectively.Core lead lower end in the high pressure sealing connector is connected with electric igniter (6) by lead-in wire (4).The upper end of high pressure sealing connector core lead is connected the back and swathes with the high pressure adhesive plaster with two cable cores in the logging cable, lighted a fire by the control device control electric igniter (6) on ground.High pressure sealing connector (2) is had in pressing plate (32) that compresses coin nail (31) and two holes that clamping sleeve (33) is pressed on electrical connector (3), reaches the purpose of sealing.In order further to prevent seepage in the cased well in powder column (8), the lower end in two holes of electrical connector (3) with epoxy resin (35) with the lead sealing.In order to prevent that epoxy resin from bleeding in the hole, utilizes pad (34) packing.The upper end of electrical connector is welded with steel and salvages ring (1), is convenient to oil reservoir detonation fracturing equipment system is hung on the cable.After powder column (8) detonation, the electrical connector (3) with salvaging ring (1) is also reusable.
Oil reservoir detonation fracturing equipment is to hang by logging cable, accurately arrives the perforated interval of production string down by magnetic locator.The high energy gas that produces after the gunpowder detonation in the oil reservoir detonation fracturing equipment makes oil reservoir produce the crack by the sleeve pipe eyelet.
The utility model has the advantages that and to carry out the detonation pressure break to 1000～3000 meters oil, natural gas cased well, can use with general oil field coordinative composition of equipments, can adopt general operational method, device therefor is simple, easy construction, safe and reliable, expense is cheap, but for core intersection any combination shell length, to produce many cracks, effect of increasing production is good.
The utility model is tested at Yanchang Oilfield Qi Li village oil field 759 wells, increases production 6.3 times, and is suitable with the effect of medium-scale fracturing.
Claims (3)
1, a kind of instrument of pressure break oilbearing stratum is characterized in that shell is connected with box cupling by more piece phenolic aldehyde expoxy glass stringing pipeline section, and the shell upper end is the electrical connector of steel and salvages ring that the shell lower end is a plug.
2, instrument according to claim 1, it is characterized in that electrical connector has two holes, insert the connector of two high pressure sealings respectively, core lead lower end in the high pressure sealing connector is connected with electric igniter by lead-in wire, the upper end of high pressure sealing connector core lead is connected the back and swathes with high pressure insulating tape with two cable cores in the logging cable, the high pressure sealing connector is had in two holes that the pressing plate that compresses coin nail and clamping sleeve be pressed on electrical connector, the lower end in two holes of electrical connector with epoxy resin with the lead sealing, there is pad the epoxy resin upper end, and there is the ring of salvaging the electrical connector upper end.
3, instrument according to claim 1, the pipeline section that it is characterized in that equal length is formed shell by box cupling after by the screwed connection that scribbles bonding agent, and different pipe sections can be loaded combustion various slowly gunpowder of speed or propellant charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213979 CN2059181U (en) | 1989-07-11 | 1989-07-11 | Pressure cracking device for oil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213979 CN2059181U (en) | 1989-07-11 | 1989-07-11 | Pressure cracking device for oil layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2059181U true CN2059181U (en) | 1990-07-11 |
Family
ID=4869848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89213979 Withdrawn CN2059181U (en) | 1989-07-11 | 1989-07-11 | Pressure cracking device for oil layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2059181U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352684A (en) * | 2013-07-15 | 2013-10-16 | 中北大学 | Chemical and physical combined explosion fracturing device and manufacturing method thereof |
| CN105298534A (en) * | 2015-11-25 | 2016-02-03 | 中国矿业大学(北京) | Light dydrocarbon explosion fracturing anti-reflection device |
| CN111520120A (en) * | 2019-08-12 | 2020-08-11 | 中国海洋石油集团有限公司 | Naked eye deflagration fracturing experimental device and method |
| CN112796726A (en) * | 2021-02-03 | 2021-05-14 | 西南石油大学 | Underground blasting device and method for reservoir fracture expansion of coal-bed gas well |
-
1989
- 1989-07-11 CN CN 89213979 patent/CN2059181U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352684A (en) * | 2013-07-15 | 2013-10-16 | 中北大学 | Chemical and physical combined explosion fracturing device and manufacturing method thereof |
| CN103352684B (en) * | 2013-07-15 | 2015-12-02 | 中北大学 | Chemical Physics compound explosion fracturing equipment and manufacture method thereof |
| CN105298534A (en) * | 2015-11-25 | 2016-02-03 | 中国矿业大学(北京) | Light dydrocarbon explosion fracturing anti-reflection device |
| CN111520120A (en) * | 2019-08-12 | 2020-08-11 | 中国海洋石油集团有限公司 | Naked eye deflagration fracturing experimental device and method |
| CN112796726A (en) * | 2021-02-03 | 2021-05-14 | 西南石油大学 | Underground blasting device and method for reservoir fracture expansion of coal-bed gas well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |