CN2177798Y - Casing explosion expanding machine - Google Patents
Casing explosion expanding machine Download PDFInfo
- Publication number
- CN2177798Y CN2177798Y CN 93240931 CN93240931U CN2177798Y CN 2177798 Y CN2177798 Y CN 2177798Y CN 93240931 CN93240931 CN 93240931 CN 93240931 U CN93240931 U CN 93240931U CN 2177798 Y CN2177798 Y CN 2177798Y
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- explosive
- column
- well
- casing
- head
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- Expired - Fee Related
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Abstract
The utility model relates to a through repair tool for oil-water wells, called a casing explosion expanding machine. The utility model comprises a cable head component, a weight component, a connecting component and a main body component. The utility model is characterized in that the maximum outer diameter of the expanding machine is determined by a main explosive column, and the length is determined by the well condition of a casing damage well; the main body component is provided with an upper detonating head, a lower detonating head and the main explosive column; the main explosive column has no a metallic frame, and the housing of the explosive is made of a hard fibre pipe. The cable is used for lowering the expanding machine to the preset position of the well section with the casing damage. After the explosive explodes, the passage of the casing damage well section is larger than the inner diameter of the original casing. The utility model creates conditions for salvaging falling objects in wells, repairing and reinforcing wells, promoting the oil-water wells to recover production or making engineering rejection.
Description
The utility model relates to a kind of oil, well major overhaul tool.
A kind of Expending device is disclosed in US-3.734.018, it only is applicable to the hole enlargement of oil, well middle sleeve distortion well, as shown in Figure 3: it is made up of centre post (34), one or several dynamite containers (35), apparatus to cause bursting (33), dynamite container is leaf-spring-like and centre post connects together, and centre post links to each other with test cable (31) by cable head (32).This Expending device weak point is:
1, it only is applicable to the hole enlargement of casing deformation well, because its external diameter is bigger, this body structure is limit the hole enlargement that can't be used for the bad break well;
2, the strength of materials of dynamite container is high and very crisp, and fragment drops on the top of fish behind the explosive charge, influences the salvaging of trouble of lost tool in hole and the reparation of casing failure well;
3, this Expending device structure is complicated, the assembly and disassembly inconvenience, and execute-in-place has certain risk.
The purpose of this utility model is to avoid the weak point in the above-mentioned prior art and provides a kind of well depth that is applicable to less than 3000m, sleeve pipe damages the back latus rectum greater than 70mm, the hole enlargement of non-cave in type bad break well or distortion well, to solve conventional workover tool long construction period, the labour intensity height, problems such as narrow application range.
The purpose of this utility model can reach by following measure:
This Expending device by cable head, increase the weight of, connection, main body four big parts form, each parts screw thread links to each other.Main element has upper and lower shooting head and main medicine column, and main medicine column does not have metal framework.Cable with Expending device down to casing failure well section precalculated position, after explosive is detonated, powerful shock wave and gases at high pressure will be produced, the pressure of shock wave and gases at high pressure is delivered to internal surface of casing by medium in the sleeve pipe, sleeve pipe and the outer rock of pipe expand outwardly, the latus rectum that makes the casing damaged well section is greater than former casing inner diameter, can adapt to the passage that junk passes through smoothly in various fishing tools and the well so that create one in the casing failure well section, adopt other supporting technologies such as sealing and reinforcing then, can not only recover the casing failure well ordinary production and can realize demixing injection-production, casing damaged well is further played a role aborning.This Expending device not only is applicable to casing deformation well, also is applicable to the non-molded cannula bad break well that caves in, and has widened range of workover.Expending device explosive shell is made with vulcanized fiber tube, and residue dissolves in well and in the medium, do not influence the salvaging of junk in the well behind the explosive charge.
The drawing of accompanying drawing is described as follows:
Fig. 1 sleeve pipe Expending device structural representation
The connection layout of Fig. 2 sleeve pipe Expending device structural representation
Fig. 3 has the Expending device structural representation
Fig. 4 sleeve pipe Expending device site operation down-hole part schematic diagram
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, 2 Expending device by cable head, increase the weight of, connection, main body four big parts form each big parts screwed connection.The external diameter of this Expending device main element is by the external diameter decision of main medicine column, and length is decided by the hole condition that sleeve pipe damages.
The cable head parts by rope socket (1), pad (2,3,4), compress pipe nipple (5) and form, it is connected with cable, and cable passes rope socket (1) and pad (2,3,4), compresses with compressing pipe nipple (5), compress pipe nipple (5) and have a slotted hole, can be used for placing terminal.
Add heavy parts and be made up of top connection (6), housing (7), lead for retractable pencil (8), lower contact (9), lead for retractable pencil (8) is positioned at housing (7), plays when Expending device is gone into the well to increase the weight of effect and help Expending device and remove smoothly.
Link by the upper and lower pipe nipple of link (10), (16), trip bolt (11), fixedly pipe nipple (12), link (13), on compress pipe nipple (17), compressing tablet (18), upper pressing cap (19), sunk screw (14), fillister head screw (15) are formed; Link has inner via hole, the detonator lead-in wire can pass from this hole, link (13) by the upper and lower pipe nipple of link (10), (16) with sunk screw (14) and fillister head screw (15) with main body and increase the weight of two big parts and connect together, this kind connects convenient disassembly, simple in structure, help execute-in-place.On compress dress detonator in the pipe nipple (17), its lower end has a step to be stuck in the groove of upper pressing cap (19) upper end, there is interior screw thread upper pressing cap (19) lower end.
Main element by upper and lower shooting head (20), (26), main medicine column, lower pressing cap (28), compress pipe nipple (29) down, guide head (30) is formed; Primer (21), (27) are housed in the upper and lower shooting head; Main medicine column becomes button hoop (23), box cupling (25) by explosive column, and assembly forms according to hole condition, and explosive column comprises powder column shell (22) and explosive (24).
Explosive (24) has anti-water, oil resistant, resistance to compression, moisture resistance properties in oil, well, be composed of 4 kinds of medicines number according to the explosion velocity of explosive difference, every kind of medicine number is composed of 4 kinds of medicines footpaths according to the dose difference again, explosive column length is fixed, and dose is big, and the explosive column external diameter is big, type according to casing failure well, the dosage design formulas is calculated dosage, selects rational explosion velocity and dose, determines explosive column quantity and external diameter.Explosive is that cylinder places in the powder column shell (22) of corresponding size, and powder column shell (22) upper and lower end has male thread, with box cupling (25) or become snapping hoop (23) the formation main medicine column that connects together.Generally can choose, hang down the explosion velocity Expending device the distortion well, explosion velocity is less than 4500m/s; Can select middle and high explosion velocity Expending device for use to the bad break well, explosion velocity can be greater than 4500m/s.
This Expending device explosive does not have metal framework, and powder column shell (22) is made by vulcanized fiber tube, and other parts of main element are made by aluminum alloy materials, and behind the explosive charge, residue dissolves in well and in the medium, do not influence fishing junk in the well.
After the main medicine column assembly was good, upper and lower end linked to each other with upper and lower shooting head (20), (26) respectively.
Main element has upper and lower shooting head (20), (26), and three kinds of detonation waies are arranged.
Fracture or employing upper end ignition when the shaping of distortion well on fracture contains under in the bad break well.The assemble method of last shooting head is: after the detonator lead short circuit, pass from bottom to top from compressing pipe nipple (17) endoporus, tension lead-in wire make the detonator afterbody with on to compress pipe nipple (17) lower end concordant, the step of pipe nipple lower end is stuck in upper pressing cap (19) groove, and the pressure cap lower end links to each other with last shooting head (20) screw thread.
Containing to descend fracture then to adopt the lower end to ignite as if last fracture in the bad break well, the assemble method of following shooting head is: will pass from top to bottom from this pipe nipple endoporus after the detonator lead short circuit, tension lead-in wire make the detonator afterbody with under compress on the pipe nipple (29) concordant, the step that compresses pipe nipple (29) upper end down is stuck in lower pressing cap (23) groove, the pipe nipple lower end links to each other with guide head (30) screw thread, lower pressing cap (28) upper end and following shooting head (26) screwed connection.
Bad break well fracture contains that state is not obvious maybe can't judge fracture morphology, the mode that adopts upper and lower end to ignite simultaneously.
During in the employing or lower end single-ended ignition, the detonator lead-in wire is passed Expending device link inner via hole, will on compress pipe nipple (17) and link to each other with pipe nipple (16) screw thread under the link, detonator being gone between links to each other with safety cable (38) buttock line again, with the high pressure adhesive plaster terminal is wrapped to pack into to compress in pipe nipple (5) slotted hole.
When adopting upper and lower end to ignite, upper and lower detonator lead-in wire is passed the link inner via hole together, will on compress pipe nipple (17) and link to each other with pipe nipple (16) screw thread under the link, adopt multiple process to be connected with safety cable (36) buttock line in upper and lower detonator lead-in wire, with the high pressure adhesive plaster terminal is packed tightly, packing into compresses in pipe nipple (17) slotted hole.
Shown in Figure 4, with test cable (36) Expending device is sling during on-the-spot the use, aiming at well head sends in the well, safety cable is down to about the above 0.3m of wellhead flange, and there is the special messenger to nurse under the cable head exploding wire situation, safety cable and test cable heart yearn are connected, go into the well with the speed of 25m/min then, when Expending device after desired depth, magnetic localizer (37) has been examined the degree of depth, exploding wire is linked to each other with initiator, open charge switch, voltage is raised to when requiring numerical value, presses the push button that detonates, observe well head overflow and strum situation simultaneously, reflect that obvious ignition successfully can trip out test cable and finish execute-in-place.
The utility model compared with prior art has the following advantages:
1, this Expending device construction technology is simple, not only is applicable to casing deformation well, also is applicable to the non-molded cannula broken well that caves in, and has widened range of workover.
2, the Expending device explosive column does not have metal framework, and the explosive shell adopts vulcanized fiber tube to make, and behind the explosive charge, residue dissolves in well and in the medium, do not affect fishing junk in the well.
3, this instrument can be selected different detonation waies according to the fracture morphology of bad break well; Improved the hole enlargement one-time success rate.
4, Expending device is simple in structure, the assembled on site safe ready.
Claims (2)
1, a kind of oil, well major overhaul tool, be called the bushing explosion Expending device, it comprises cable head, increase the weight of, connection, main body four big parts, it is characterized in that: main element by upper and lower shooting head (20), (26), main medicine column, lower pressing cap (28), compress pipe nipple (29) down, guide head (30) is formed, except that explosive column, other each part is made by aluminium alloys; Main medicine column is formed by explosive column, change snapping hoop (23), box cupling (25) assembly; Explosive column comprises powder column shell (22) and explosive (24), explosive is a cylinder, place in the powder column shell (22), link to each other by becoming snapping hoop (23) or box cupling (25) screw thread between the powder column shell (22), its upper and lower end links to each other with upper and lower shooting head (20), (26) screw thread respectively; Upper and lower shooting head (20), (26) respectively with upper and lower pressure cap (19), (28) screwed connection.
2, Expending device as claimed in claim 1, powder column shell (22) is made by vulcanized fiber tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93240931 CN2177798Y (en) | 1993-09-28 | 1993-09-28 | Casing explosion expanding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93240931 CN2177798Y (en) | 1993-09-28 | 1993-09-28 | Casing explosion expanding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2177798Y true CN2177798Y (en) | 1994-09-21 |
Family
ID=33815047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93240931 Expired - Fee Related CN2177798Y (en) | 1993-09-28 | 1993-09-28 | Casing explosion expanding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2177798Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074474A (en) * | 2014-04-29 | 2014-10-01 | 西安石油大学 | Sleeve applicable to diameter expansion deformation and processing method |
| CN104499977A (en) * | 2014-12-31 | 2015-04-08 | 北方斯伦贝谢油田技术（西安）有限公司 | Horizontal well bushing shaping repair method and device |
| CN108843244A (en) * | 2018-06-04 | 2018-11-20 | 中石化石油工程技术服务有限公司 | Underground primacord explosion expanding method |
| CN116084874A (en) * | 2022-12-26 | 2023-05-09 | 中国石油天然气股份有限公司 | Casing windowing tool and windowing method |
-
1993
- 1993-09-28 CN CN 93240931 patent/CN2177798Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074474A (en) * | 2014-04-29 | 2014-10-01 | 西安石油大学 | Sleeve applicable to diameter expansion deformation and processing method |
| CN104074474B (en) * | 2014-04-29 | 2015-08-12 | 西安石油大学 | A kind of sleeve pipe and processing method being applicable to expanding distortion |
| CN104499977A (en) * | 2014-12-31 | 2015-04-08 | 北方斯伦贝谢油田技术（西安）有限公司 | Horizontal well bushing shaping repair method and device |
| CN108843244A (en) * | 2018-06-04 | 2018-11-20 | 中石化石油工程技术服务有限公司 | Underground primacord explosion expanding method |
| CN108843244B (en) * | 2018-06-04 | 2020-07-24 | 中石化石油工程技术服务有限公司 | Underground detonating cord explosion hole expanding method |
| CN116084874A (en) * | 2022-12-26 | 2023-05-09 | 中国石油天然气股份有限公司 | Casing windowing tool and windowing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |