CN105041273A - External directional, orientation and perforation-angle-fixed multistage pulse enhanced-perforator - Google Patents
External directional, orientation and perforation-angle-fixed multistage pulse enhanced-perforator Download PDFInfo
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- CN105041273A CN105041273A CN201510359655.2A CN201510359655A CN105041273A CN 105041273 A CN105041273 A CN 105041273A CN 201510359655 A CN201510359655 A CN 201510359655A CN 105041273 A CN105041273 A CN 105041273A
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Abstract
The invention relates to an external directional, orientation and perforation-angle-fixed multistage pulse enhanced-perforator. The external directional, orientation and perforation-angle-fixed multistage pulse enhanced-perforator has advantages of an orientation and perforation-angle-fixed perforator and advantages of a multi-stage pulse enhanced-perforator, and belongs to a novel perforation technology integrated with orientation and perforation-angle-fixed perforation, integral enhanced performance and multistage pulse high-energy gas fracture. An external directional special structure can meet special requirements of a vertical shaft, an inclined shaft and a horizontal well, and has the advantages of low cost and easiness in operation. The external directional, orientation and perforation-angle-fixed multistage pulse enhanced-perforator has advantages that perforating bullets can be perforated towards the direction with the maximum permeability by an external directional and orientation perforation technology, so that the capacity of an oil and gas well can be improved in a multiplied manner, and by a multistage pulse high-energy gas fracture technology, high-energy gas fracture capacity is high, crack producing ability is high, and cracks of a formation can be prevented from being closed. The enhanced effect can be excellent.
Description
Technical field
The invention belongs to a kind of perforator in oil gas well completion field, relate to a kind of outer directed orientation and determine firing angle high energy gas fracture device.
Background technology
When drilling oil, gas-bearing formation, around borehole axis, the permeability of oil, gas-bearing formation is not isotropic: when the fractuer direction of carbonate formation, direction, sedimentary rock formations joint, glutenite sedimentation, downbeam is maximally stress direction, also claim principal direction of stress, its permeability is much better than other direction.If perforating bullet can be allowed during perforation towards the both direction perforation of good penetrability, the production capacity of oil, gas-bearing formation will obviously increase.It is exactly the object making perforating bullet jet towards principal direction of stress perforation thus reach volume increase that firing angle perforating technology is determined in orientation.Firing angle perforating technology is determined in orientation can be divided into outer orientation and interior orientation mode, and difference is outer orientation is that body of perforating gun and firing mount position are fixed, and keeps directed by perforating gun integral-rotation or rotation; Interior orientation mode is that body of perforating gun and firing mount can be rotated mutually by bearing touch, directed by firing mount automatic rotation.Outer orientation is applicable to straight well, inclined shaft and horizontal well, and interior orientation is only applicable to inclined shaft or the horizontal well that hole deviation is greater than 20 °.
Multistage Impulse Increase-effect Perforating Technology, integrates the synergistic perforating technology of synergistic perforating, high enegry gas fracturing, fracturing three kinds of construction technologies exactly.This technology adopts the multistage gunpowder of different combustion speed, utilizes special charge constitution, forms multiple gaseous-pressure pulse formation and carry out pressure break, crack is extended, thus realizes the object of increase yields of oil and gas.
Firing angle technology is determined in orientation and Multistage Impulse Increase-effect Perforating Technology is all the technology at present well production increment to positive effect, promotes the use of at each elephant.
Summary of the invention
The technical problem solved
In order to avoid the deficiencies in the prior art part, the present invention proposes a kind of outer directed orientation and determines firing angle high energy gas fracture device, a kind ofly integrate the perforating system that firing angle perforation, Incorporate increase-effect perforating and multistage pulses high enegry gas fracturing comprehensive technology are determined in outer directed orientation, namely firing angle high energy gas fracture device is determined in outer directed orientation, and this perforator reaches better oil, gas effect of increasing production after can making perforating job.
Technical scheme
Firing angle high energy gas fracture device determine in a kind of outer directed orientation, comprises swivel joint 1, initiator 2, orientation rifle head 3, lays particular stress on rifle 4, multi-openings bullet 18 that outer directed orientation pin and box sub 5, outer directed orientation pair male joint 6, outer directed orientation are determined in firing angle synergistic perforating gun 7, screen joint 10, screen casing tail 17, firing mount; Characterized by further comprising one-level synergy gunpowder 9 and secondary synergy gunpowder 8; One-level synergy gunpowder 9 is located at perforating bullet oral area, and multiple secondary synergy gunpowder 8 is mingled with between multi-openings bullet 18.
Also comprise igniter joint 11, dividing plate Time Delay Squib 12, Special screen 13, three grades of synergy gunpowder 14, igniting powder column 15 and level Four synergy gunpowder 16; Special screen 13 is connected between screen joint 10 and screen casing tail 17, is provided with igniting powder column 15, igniter joint 11, dividing plate Time Delay Squib 12, three grades of synergy gunpowder 14 and level Four synergy gunpowder 16 in Special screen 13; Annexation is: three grades of synergy gunpowder 14 upper ends are connected with screen joint 10 with igniter joint 11 by dividing plate Time Delay Squib 12, three grades of synergy gunpowder 14 lower ends connect level Four synergy gunpowder 16, and igniting powder column 15 is between three grades of synergy gunpowder 14 and level Four synergy gunpowder 16; Then overall be connected with Special screen 13 and determine firing angle synergistic perforating gun 7 by screen joint 10 and outer directed orientation connect as one.
Have screw thread in described three grades of synergy gunpowder 14 and level Four synergy gunpowder 16 central tube, three grade 14 and level Four synergy gunpowder 16 are by connector and be threaded togather.
Described Special screen 13 tube wall has many exhausting holes, in the pipe matched with many exhausting holes position, inwall has multiple elongated slot, form the gas leakage path after gunpowder detonation.
Beneficial effect
Firing angle high energy gas fracture device is determined in the outer directed orientation of the one that the present invention proposes, this perforator combines the advantage that firing angle perforator and high energy gas fracture device are determined in orientation, and namely it is the novel perforating technology that collection orientation determines that firing angle perforation, Incorporate increase-effect perforating and multistage pulses high enegry gas fracturing are the whole body.The special construction of outer orientation can meet the particular/special requirement of straight well, inclined shaft and horizontal well, has cost low, feature simple to operate.This invention has not only been merged in outer directed oriented perforation technology can by perforating bullet towards the best direction perforation of permeability, thus make the advantage that oil gas well capacity is multiplied, simultaneously, merge again that high energy gas breakage in multistage pulses High-Energy Gas Fracturing Technology is strong, width generation capacity good and can prevent the advantage that formation fracture is closed, there is good synergistic effect.
Technique effect of the present invention is: special determines firing angle structure and the design of outer oriented structure, make perforator can along principal direction of stress or assigned direction perforation in inclined shaft and horizontal well, increase perforation in the earth formation penetrate out area, effective increase Oil & Gas Productivity passage, simultaneously unique multistage gunpowder one package structual makes gunpowder at different levels burn successively to produce multistage high energy gas formation to carry out pressure break repeatedly, make generation crack, stratum or primary fracture is expanded further, further increasing Oil & Gas Productivity.Swivel joint and lay particular stress on rifle and can reuse, can reduce construction cost greatly.
Accompanying drawing explanation
Fig. 1: high energy gas fracture device structural representation of the present invention
Fig. 2: high energy gas fracture device segmental structure schematic diagram of the present invention
Fig. 3: be the roll structure schematic diagram of the outer directed orientation pin and box sub 5 of the present invention
Fig. 4: be the two male joint 6 roll structure schematic diagram of the outer directed orientation of the present invention
Fig. 5: for the present invention lays particular stress on rifle structural representation
Swivel joint 1, orientation shock or pressure detonator 2, orientation rifle head 3, lay particular stress on rifle 4, outer directed orientation pin and box sub 5, the two male joint 6 of outer directed orientation, outer directed orientation determine firing angle synergistic perforating gun 7, secondary synergy gunpowder 8, one-level synergy gunpowder 9, screen joint 10, igniter joint 11, dividing plate Time Delay Squib 12, Special screen 13, three grades of synergy gunpowder 14, multi-openings bullet 18, light a fire powder column 15, level Four synergy gunpowder 16, screen casing tail 17.
Detailed description of the invention
Now in conjunction with the embodiments, the invention will be further described for accompanying drawing:
See Fig. 1-Fig. 2, the present invention relates to a kind of outer directed orientation and determine firing angle high energy gas fracture device, comprise swivel joint 1, orientation shock or pressure detonator 2, orientation rifle head 3, lay particular stress on rifle 4, outer directed orientation pin and box sub 5, the two male joint 6 of outer directed orientation, firing angle synergistic perforating gun 7 is determined in outer directed orientation, secondary synergy gunpowder 8, one-level synergy gunpowder 9, screen joint 10, igniter joint 11, dividing plate Time Delay Squib 12, Special screen 13, three grades of synergy gunpowder 14, multi-openings bullet 18, igniting powder column 15, level Four synergy gunpowder 16 and screen casing tail 17.
See Fig. 1, in this embodiment, multi-openings bullet 18 is contained on the firing mount in outer directed synergistic perforating gun 7, and one-level synergy gunpowder 9 is assemblied in perforating bullet oral area, and secondary synergy gunpowder 8 is assemblied between multi-openings bullet 18.Three grade 14 and level Four synergy gunpowder 16 have central tube, screw thread is had in central tube, by connector, three grade 14 and level Four synergy gunpowder 16 are linked together, three grades of synergy gunpowder 14 upper ends are linked together by igniter joint 11 and screen joint 10, and then entirety is connected with Special screen 13 and is connected as one by screen joint 10 and outer directed synergistic perforating gun 7.Outer directed synergistic perforating gun 7 can many connect for multistage pipe string, with the requirement of satisfied different perforating length, add according to different perforating length simultaneously and appropriate lay particular stress on rifle.Dividing plate Time Delay Squib 12 is provided with certain time delay, can ensure that three grade 14 and level Four synergy gunpowder 16 lag behind one-level, secondary powder burning, simultaneously three, level Four synergy gunpowder has different combustion speed, thus after perforation, form multistage pulses high energy gas continue pressure break, considerably increase action time and the effect of high energy gas.
Described swivel joint 1 input contacts full by bearing touch with output, and swivel joint input and output side is rotated relatively freely, and special structure can ensure that swivel joint keeps good rotating property when load capacity is larger simultaneously.
Described orientation rifle head 3, outer directed orientation pin and box sub 5, the two male joint 6 of outer directed orientation are roll structure, and object is the frictional force in order to reduce between perforation tubular column and sleeve pipe, improves directed accuracy.See accompanying drawing 3 and Fig. 4, the syndeton of orientation rifle head 3 is consistent with figure.
Describedly laying particular stress on the special construction that rifle 4 is semicircle counterweight, by determining the connection of firing angle synergistic perforating gun 7 with outer directed orientation, making perforation tubular column in certain hole deviation situation because the existence of laying particular stress on rifle 4 makes perforation tubular column remain on preset bearing.
All perforation tubular column spinning joints are all connected as one by outer directional bond with lower component and orientation is consistent, and namely to determine firing angle synergistic perforating gun orientation with lower part as a whole and outer directed orientation when rotating consistent for swivel joint.
Described three grades of synergy gunpowder 14 and level Four synergy gunpowder 16 link together and are contained in Special screen 13, central tube built with igniting powder column 15, lighted by dividing plate Time Delay Squib 12, lag behind one-level 9, secondary synergy gunpowder 8 carry out pressure break repeatedly to form multistage pulses high energy gas formation.
Described Special screen 13, above except being drilled with many rows 8 orientation macropores, also has four orientation elongated slots, can allow 3 14, high energy gas that level Four synergy gunpowder 16 produces sheds smoothly, the residue after burning can also be received and kept thus avoided the pollution to well simultaneously.
In use, when perforated interval hole angle is greater than 20 °, this perforator connects signal as shown in Figure 1, swivel joint 1 upper end connected pipes, when under tubing string after target zone, the string of pipe below swivel joint is in precalculated position under the inclined Action of Gravity Field of laying particular stress on rifle 4, make perforating bullet jet towards the injection of appointment orientation by the predetermined firing angle on firing mount simultaneously, the effect of multistage synergy gunpowder produces a large amount of gas to the further pressure break in duct and stratum, reaches orientation and determines firing angle perforation and the coefficient object of high enegry gas fracturing.Major part is collected in bottom Special screen 13 by the residue after burning, can not pollute producing in well.When perforated interval hole angle is less than 20 °, laying particular stress on rifle and swivel joint without the need to connecting, directly adopting and realizing orientation in the mode of well head rotation tubing string.
Claims (8)
1. a firing angle high energy gas fracture device determine in outer directed orientation, comprises swivel joint (1), initiator (2), orientation rifle head (3), lays particular stress on rifle (4), multi-openings bullet (18) that outer directed orientation pin and box sub (5), outer directed orientation pair male joint (6), outer directed orientation are determined in firing angle synergistic perforating gun (7), screen joint (10), screen casing tail (17), firing mount; Characterized by further comprising one-level synergy gunpowder (9) and secondary synergy gunpowder (8); One-level synergy gunpowder (9) is located at perforating bullet oral area, and multiple secondary synergy gunpowder (8) is mingled with between multi-openings bullet (18).
2. firing angle high energy gas fracture device is determined in outer directed orientation according to claim 1, characterized by further comprising igniter joint (11), dividing plate Time Delay Squib (12), Special screen (13), three grades of synergy gunpowder (14), igniting powder column (15) and level Four synergy gunpowder (16); Special screen (13) is connected between screen joint (10) and screen casing tail (17), is provided with igniting powder column (15), igniter joint (11), dividing plate Time Delay Squib (12), three grades of synergy gunpowder (14) and level Four synergy gunpowder (16) in Special screen (13); Annexation is: three grades of synergy gunpowder (14) upper ends are connected with screen joint (10) with igniter joint (11) by dividing plate Time Delay Squib (12), three grades of synergy gunpowder (14) lower ends connect level Four synergy gunpowder (16), and igniting powder column (15) is positioned between three grades of synergy gunpowder (14) and level Four synergy gunpowder (16); Then overall be connected with Special screen (13) and pass through screen joint (10) and outer directed orientation determine firing angle synergistic perforating gun (7) and connect as one.
3. firing angle high energy gas fracture device is determined in outer directed orientation according to claim 1, it is characterized in that: have screw thread in described three grades of synergy gunpowder (14) and level Four synergy gunpowder (16) central tube, three grades (14) and level Four synergy gunpowder (16) are by connector and be threaded togather.
4. firing angle high energy gas fracture device is determined in outer directed orientation according to claim 1, it is characterized in that: described Special screen (13) tube wall has many exhausting holes, in the pipe matched with many exhausting holes position, inwall has multiple elongated slot, form the gas leakage path after gunpowder detonation.
5. firing angle high energy gas fracture device is determined in outer directed orientation according to claim 1, it is characterized in that: described swivel joint (1) input passes through bearing touch with contacting of output.
6. firing angle high energy gas fracture device is determined in outer directed orientation according to claim 1, it is characterized in that: the two male joint (6) of described orientation rifle head (3), outer directed orientation pin and box sub (5) and outer directed orientation is roll structure.
7. firing angle high energy gas fracture device is determined in outer directed orientation according to claim 1, it is characterized in that: described in lay particular stress on the special construction that rifle (4) is semicircle counterweight, by determining the connection of firing angle synergistic perforating gun (7) with outer directed orientation.
8. firing angle high energy gas fracture device is determined in outer directed orientation according to claim 1, it is characterized in that: described perforation tubular column spinning joint is all connected as one by outer directional bond with lower component and orientation is consistent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510359655.2A CN105041273B (en) | 2015-06-25 | 2015-06-25 | Firing angle high energy gas fracture device is determined in orientation orientation outside a kind of |
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| CN201510359655.2A CN105041273B (en) | 2015-06-25 | 2015-06-25 | Firing angle high energy gas fracture device is determined in orientation orientation outside a kind of |
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| CN105041273A true CN105041273A (en) | 2015-11-11 |
| CN105041273B CN105041273B (en) | 2018-09-18 |
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Cited By (3)
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| CN107542432A (en) * | 2017-09-04 | 2018-01-05 | 大庆红祥寓科技有限公司 | Firing angle effect-increasing perforator is determined in inside and outside blind hole orientation |
| CN110608025A (en) * | 2018-06-15 | 2019-12-24 | 中石化石油工程技术服务有限公司 | Pulse type spraying sand adding tool |
| CN110939424A (en) * | 2019-11-27 | 2020-03-31 | 西安物华巨能***器材有限责任公司 | Well-free underground coal gasification ignition method |
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| CN110939424A (en) * | 2019-11-27 | 2020-03-31 | 西安物华巨能***器材有限责任公司 | Well-free underground coal gasification ignition method |
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| CN105041273B (en) | 2018-09-18 |
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