CN201620764U - Continuous impact acidizing tubular column - Google Patents
Continuous impact acidizing tubular column Download PDFInfo
- Publication number
- CN201620764U CN201620764U CN200920278221XU CN200920278221U CN201620764U CN 201620764 U CN201620764 U CN 201620764U CN 200920278221X U CN200920278221X U CN 200920278221XU CN 200920278221 U CN200920278221 U CN 200920278221U CN 201620764 U CN201620764 U CN 201620764U
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- oil
- packer
- ball
- steel ball
- impactor
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- Expired - Lifetime
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Abstract
The utility model relates to a downhole tool, especially impact acidizing tubular column in succession that are used for oil field oil well to go up comprises oil pipe, packer, steel ball, adapter sleeve, impacter, ball fence, the utility model discloses owing to adopted oil pipe and packer, steel ball, adapter sleeve, impacter, ball fence to connect gradually, utilize high-pressure liquid to open the blasting valve suddenly, produce instantaneous high-speed. The high velocity fluid suddenly encounters a blockage causing a hydraulic shock that creates a transient high pressure wave that propagates through the wellbore and formation voids. The method can destroy the cohesive force between the blocking particles and the reservoir, change the capillary diameter of an oil transportation pore passage, cause the periodic expansion and contraction of the capillary, and is beneficial to improving the permeability of the oil layer.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for using on the oilfield, particularly bump acidifying tubing string.
Background technology:
Normal oil well production is after a period of time because strata pressure constantly reduces, and shake out, formation blockage etc., the permeability reduction of oil reservoir reduces capacity of oilwell greatly, has improved cost of production.
Summary of the invention:
The purpose of this utility model is to provide bump acidifying tubing string, utilizes highly pressurised liquid that the concussion burst valve is thrown open, and produces instantaneous high speed.Pressure-wave propagation, reflection and the vibration effect of formed pressure pulse that superpose to the stratum.It can destroy the cohesive force between plugging particle and the reservoir, and oil transportation duct capillary caliber is changed, and causes periodicity breathing capillaceous, helps improving reservoir permeability, thereby improves the oil reservoir flow conductivity.
The utility model is made up of oil pipe, packer, steel ball, adapter sleeve, impactor, ball hurdle, impactor comprises top connection, valve cover, valve cover, sliding sleeve, connecting pipe, eccentric explosion-proof apparatus, base, lower contact again, oil pipe is connected successively with packer, steel ball, adapter sleeve, impactor, ball hurdle, in the impactor, top connection is connected successively with valve cover, connecting pipe, lower contact, the valve cover is arranged in the top connection, in the valve cover sliding sleeve is arranged, eccentric explosion-proof apparatus, base are arranged in the connecting pipe.
During work, impactor is installed in the oil pipe bottom, aims at the oil reservoir position the self-styled formula packer that sets of one cover nearby is installed on hydraulic impact generator top, through oil pipe down-hole waterpower percussion mechanism is lowered to the predetermined process interval during construction.The oil reservoir middle part is aimed on the ball hurdle, adorns ground installation then.Elder generation to well head, drops into steel ball with perfusion fluid in the oil pipe then, and with the pump truck pressurization, when hydraulic pressure was elevated to packer setting pressure, packer setting made the liquid flow space that forms a sealing between following casing annulus of packer and the oil reservoir.When pressure continuation rising reaches the strength limit of one-level concussion burst valve, explosive valve throws open, original static liquid is quickened suddenly, this high-velocity fluid enters casing space, and speed can be converted into the pressure energy, and pressure directly affacts on tube wall and the oil reservoir, produce compression shock once more, pressure surge constantly reflects, affacts on reservoir rock and the liquid, plays broken shearing, washes away and rolling action, realizes pour point depression and de-plugging.Continue then to build the pressure, make steel ball fall into second level explosive valve, carry out the second time and impact, impact until finishing the physics method at last.
The utility model utilizes highly pressurised liquid that the concussion burst valve is thrown open owing to adopted oil pipe to be connected successively with packer, steel ball, adapter sleeve, impactor, ball hurdle, produces instantaneous high speed.High-velocity fluid is hampered suddenly and causes hydraulic blow, produces instantaneous high pressure, and this compression wave transmits in pit shaft and oil reservoir space.It embodies both ways: mechanism and hydraulic action.Mechanism is that pressure acts directly on the rock stratum, makes its fragmentation, produces the crack.Hydraulic action is meant, pressure-wave propagation, reflection and the vibration effect of formed pressure pulse to the stratum that superpose.It can destroy the cohesive force between plugging particle and the reservoir, and oil transportation duct capillary caliber is changed, and cause periodicity breathing capillaceous, help improving reservoir permeability, clamp-on the chemical plugging removal agent by this fracturing string simultaneously, remove oil layer blocking and gull gap.The obstruction of de-plugging agent kluftkarren surface and pore constriction enlarges the oil reservoir pore channel.Perhaps the character at the rock stratum adds certain mud acid, and the rock stratum is handled, and makes crack closure under the effect of last overlying strata stone pressure not tight, thereby improves the oil reservoir flow conductivity.
Description of drawings:
Fig. 1 is an impactor body structure schematic diagram of the present utility model.
Fig. 2 is a structural representation of the present utility model.
The specific embodiment:
As Fig. 1, shown in Figure 2, the utility model is by oil pipe 9, packer 10, steel ball 11, adapter sleeve 12, impactor 13, ball hurdle 14 is formed, impactor 13 comprises top connection 1 again, valve cover 2, valve cover 3, sliding sleeve 4, connecting pipe 5, eccentric explosion-proof apparatus 6, base 7, lower contact 8, oil pipe 9 and packer 10, steel ball 11, adapter sleeve 12, impactor 13, ball hurdle 14 connects successively, in the impactor 13, top connection 1 and valve cover 3, connecting pipe 5, lower contact 8 connects successively, valve cover 2 is arranged in the top connection 1, sliding sleeve 4 is arranged, connecting pipe 5 in the valve cover 3, in eccentric explosion-proof apparatus 6 is arranged, base 7.
During work, this tubing string is mainly by oil pipe 9, packer 10, steel ball 11, adapter sleeve 12, level Four impactor 13, and ball hurdle 14 is formed, and packer 10 is used to intercept the transmission of the shock wave of handling oil interval and sleeve pipe, and protective casing and well head strengthen the pressure transmission effects.Adapter sleeve 12 is used for the assembling successively of Hydraulic Impact Mechanism 13 at different levels.Multi-stage water power impactor 13 according to the difference of burst strength be used to suppress hydraulic pressure then explosion suddenly open, produce the high speed impact compression wave.Lower contact, the effect on ball hurdle is the conducting pressure shock wave, and makes steel ball and other junks, falls into its ball hurdle, bottom.
Operating principle:
Impactor is installed in the oil pipe bottom, aims at the oil reservoir position the self-styled formula packer that sets of one cover nearby is installed on hydraulic impact generator top, through oil pipe down-hole waterpower percussion mechanism is lowered to the predetermined process interval during construction.The oil reservoir middle part is aimed on the ball hurdle, adorns ground installation then.Elder generation to well head, drops into steel ball with perfusion fluid in the oil pipe then, and with the pump truck pressurization, when hydraulic pressure was elevated to packer setting pressure, packer setting made the liquid flow space that forms a sealing between following casing annulus of packer and the oil reservoir.When pressure continuation rising reaches the strength limit of one-level concussion burst valve, explosive valve throws open, original static liquid is quickened suddenly, this high-velocity fluid enters casing space, and speed can be converted into the pressure energy, and pressure directly affacts on tube wall and the oil reservoir, produce compression shock once more, pressure surge constantly reflects, affacts on reservoir rock and the liquid, plays broken shearing, washes away and rolling action, realizes pour point depression and de-plugging.Continue then to build the pressure, make steel ball fall into second level explosive valve, carry out the second time and impact, impact until finishing the physics method at last.
Claims (1)
1. bump acidifying tubing string, by oil pipe (9), packer (10), steel ball (11), adapter sleeve (12), impactor (13), ball hurdle (14) is formed, it is characterized in that: impactor (13) comprises top connection (1) again, valve cover (2), valve cover (3), sliding sleeve (4), connecting pipe (5), eccentric explosion-proof apparatus (6), base (7), lower contact (8), oil pipe (9) and packer (10), steel ball (11), adapter sleeve (12), impactor (13), ball hurdle (14) connects successively, in the impactor (13), top connection (1) and valve cover (3), connecting pipe (5), lower contact (8) connects successively, valve cover (2) is arranged in the top connection (1), sliding sleeve (4) is arranged in the valve cover (3), eccentric explosion-proof apparatus (6) is arranged in the connecting pipe (5), base (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920278221XU CN201620764U (en) | 2009-12-16 | 2009-12-16 | Continuous impact acidizing tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920278221XU CN201620764U (en) | 2009-12-16 | 2009-12-16 | Continuous impact acidizing tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201620764U true CN201620764U (en) | 2010-11-03 |
Family
ID=43024220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920278221XU Expired - Lifetime CN201620764U (en) | 2009-12-16 | 2009-12-16 | Continuous impact acidizing tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201620764U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708696A (en) * | 2018-04-24 | 2018-10-26 | 中国石油天然气股份有限公司 | Continuous pulse acidification method |
| CN110219627A (en) * | 2019-06-19 | 2019-09-10 | 中国海洋石油集团有限公司 | A method of enhancing offshore oilfield oil well acidation effect |
| CN111577237A (en) * | 2020-05-29 | 2020-08-25 | 中国海洋石油集团有限公司 | Water hammer composite fracturing process method for low-permeability oil field |
-
2009
- 2009-12-16 CN CN200920278221XU patent/CN201620764U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708696A (en) * | 2018-04-24 | 2018-10-26 | 中国石油天然气股份有限公司 | Continuous pulse acidification method |
| CN110219627A (en) * | 2019-06-19 | 2019-09-10 | 中国海洋石油集团有限公司 | A method of enhancing offshore oilfield oil well acidation effect |
| CN111577237A (en) * | 2020-05-29 | 2020-08-25 | 中国海洋石油集团有限公司 | Water hammer composite fracturing process method for low-permeability oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101103 |