CN108708696A - Continuous pulse acidification method - Google Patents
Continuous pulse acidification method Download PDFInfo
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- CN108708696A CN108708696A CN201810370226.9A CN201810370226A CN108708696A CN 108708696 A CN108708696 A CN 108708696A CN 201810370226 A CN201810370226 A CN 201810370226A CN 108708696 A CN108708696 A CN 108708696A
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- 230000020477 pH reduction Effects 0.000 title abstract description 21
- 238000000034 method Methods 0.000 title abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 35
- 239000012530 fluid Substances 0.000 claims description 33
- 238000009434 installation Methods 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 230000010349 pulsation Effects 0.000 claims description 15
- 230000000694 effects Effects 0.000 abstract description 19
- 238000005086 pumping Methods 0.000 abstract description 5
- 230000010355 oscillation Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 42
- 238000007789 sealing Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000000541 pulsatile effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
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- 210000001367 artery Anatomy 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010129 solution processing Methods 0.000 description 1
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- 230000002195 synergetic effect Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention provides a continuous pulse acidification method, which comprises the following steps: step a, providing a plug removal pipe column, wherein a continuous pulse generator is arranged on the plug removal pipe column; b, connecting the plug removal pipe column in series with an oil pipe, and putting the plug removal pipe column into a downhole casing through the oil pipe; pumping acid liquor into an oil pipe, discharging the acid liquor through a continuous pulse generator of the plug removal pipe column in a pulsating mode, and enabling the acid liquor to enter a reservoir stratum for plug removal; and d, pumping clear water into the oil pipe until no acid liquor residue exists in the oil pipe. The invention can increase pulse oscillation, remove stratum blockage by matching with an acidification measure, prolong the blockage removal distance and improve the acidification effect.
Description
Technical field
The invention belongs to technical field of petroleum extraction, are related to acidizing unblocking technique technology, specifically a kind of to be solved for stratum
Stifled continuous impulse acidization tool.
Background technology
With oil gas field or the progress of grease well development, because various measure operations increase reservoir pollution degree, production capacity
Index or injectivity index can significantly decrease, and be primarily due to argillaceous sediment, emulsion, paraffin, colloid, asphalitine
And other mechanical admixtures block pore channel, and in-place permeability is caused to decline, oil well output and water injection well water injection rate are continuous
It reduces, influences the whole development in oil field.Acidification at present, pressure break are to solve the effective way of problems, but hydraulic fracturing is easy
Water breakthrough, and the effective distance of conventional acidulation is short, effective period is short.
Such as application No. is a kind of 201310300948.4 Chinese invention patent application " middle and high infiltration sandstone oil reservoir water filling well depths
Portion's blockage -removing and stimulation ", the deep that bilge well is noted primarily directed to middle and high infiltration sandstone oil reservoir block, using " wash-clear-
The slug formula treatment process of solution-steady " well-flushing and clears up before being acidified, is then injected into acid solution and is acidified, and squeezed after acidification
Enter compound stabilizer, to extend the augmented injection term of validity.For another example it application No. is 201310573747.1 Chinese invention patent application, carries
It for a kind of deep acidizing acid solution and realizes low permeability sandstone reservoir deep acidizing method, mainly handles nearly well using conventional acid solution
Area is polluted, and deep acidizing acid solution processing stratum is reused.For another example application No. is 201010116368.6 Chinese invention patents
Application, provides a kind of short-injection water injection well acidation injectivity process, preposition acid solution is discharged by well-flushing repeatedly, has given full play to master
The effect of acid, while the secondary pollution of oil reservoir is also avoided, deep acidification is realized, the augmented injection term of validity is extended.
The above-mentioned prior art is to utilize acid solution de-plugging, and the effect for fully relying on chemical agent releases blocking, on the one hand makees
With apart from limited, plugging removal effect is not good enough, on the other hand has measure layer particularly for property, restricted application.
Invention content
The object of the present invention is to provide a kind of continuous impulse acidization tools, can increase pulse oscillating, coordinate acidification measure
Formation blockage is released, de-plugging distance is extended, improves acidification effect.
Following technical proposal can be used to realize in the above-mentioned purpose of the present invention：
The present invention provides a kind of continuous impulse acidization tool comprising following steps：Step a provides de-plugging tubing string, described
De-plugging tubing string is equipped with continuous impulse generator；The de-plugging tubing string is series at oil pipe by step b, by the oil pipe by institute
It states in de-plugging tubing string tripping in down-hole casing；Acid solution is pumped into oil pipe, continuous arteries and veins of the acid solution through the de-plugging tubing string by step c
Generator pulsation discharge is rushed, and enters reservoir blockages relieving；Step d is pumped into clear water into the oil pipe, until anacidity in the oil pipe
Liquid remains.
In a preferred embodiment, the de-plugging tubing string is general de-plugging tubing string, and the general de-plugging tubing string includes one
A continuous impulse generator and a packer, the reservoir include at least one sub- reservoir, the packer and described
Continuous impulse generator is sequentially connected in series from top to bottom in the oil pipe, and the packer is located at the top of the reservoir.
In a preferred embodiment, the continuous impulse generator is located at the lower end of the oil pipe, the continuous impulse
Generator is opposite with the reservoir or positioned at the top of the reservoir.
In a preferred embodiment, the continuous impulse generator includes：Outer barrel can be series on the oil pipe,
The outer barrel interior energy rotation is equipped with turbine；Diversion division is set in the outer barrel, and the diversion division is located at the upper of the turbine
It is square, through equipped with eccentric access road on the diversion division；Conduction part, be set to the outer barrel in, the drain site in
It the lower section of the turbine can be through the whirlpool by the liquid of the access road through exit passageway is equipped in the conduction part
Wheel is pulsed from the exit passageway to be discharged.
In a preferred embodiment, fixed sticking department in the outer barrel, the top and bottom of the sticking department are supported respectively
It is connected to the diversion division and the conduction part, lateral fixed installation axle in the sticking department, what can be rotated in the installation axle sets
There are the turbine, the central axis of the installation axle and the central axis of the outer barrel perpendicular.
In a preferred embodiment, the de-plugging tubing string is layering de-plugging tubing string, and the layering de-plugging tubing string includes extremely
Few two continuous impulse generators and at least two packers, the reservoir include at least two sub- reservoirs, described continuous
What impulse generator and the packer interlocked is series at oil pipe, and the lower end of the oil pipe is equipped with silk plug, the continuous impulse hair
Raw device is horizontal opposite one by one with the reservoir, and the diameter of the steel ball of at least two continuous impulse generators is from bottom to top successively
Increase.
In a preferred embodiment, the continuous impulse generator includes：Outer barrel can be series on the oil pipe,
The outer barrel includes top connection and the lower contact that is connected with the top connection, and the side wall of the lower contact is equipped with fluid outlet；It is sliding
Set, what can be detached is fixedly arranged in the outer barrel, and the upper end of the sliding sleeve, which is equipped with, can block the ball seat for setting steel ball, the sliding sleeve and institute
It states to enclose between top connection and the lower contact and sets to form accommodating chamber, be equipped with holder in the accommodating chamber, the holder is by the appearance
Chamber of receiving is divided into upper chamber and lower chambers, and the holder is equipped with the fluid course for being connected to the upper chamber and the lower chambers,
The bottom chamber is equipped with turbine, and the liquid that the lower chambers are entered by the fluid course can be through the turbine from the liquid
Outflux pulsation discharge.
In a preferred embodiment, the sliding sleeve is connected with the top connection of the outer barrel by shear pin, the top connection
Middle part inner wall projection necking part, between the necking part and the lower face of the top connection be equipped with ladder recessed portion, it is described
The recessed annular recess of inner wall on the top of lower contact, the recessed groove that can accommodate turbine in the annular recess, the branch
Frame is arranged between the lower face of the top connection and the end face of the annular recess.
In a preferred embodiment, fixed installation axle in the groove, what the turbine can rotate is set to the installation
On axis, the extending direction of the installation axle is vertical with the extending direction of the fluid course.
The characteristics of continuous impulse acidization tool of the present invention and advantage are：
Continuous impulse acidization tool of the present invention makes acid solution by connecting by the de-plugging tubing string with continuous impulse generator
Continuous impulse generator can be discharged by pulsation, and the acid solution of the pulsation of discharge can enter reservoir, to carry out de-plugging to the blocking of reservoir, increase
Added impulse hunting effect, changed the single chemical corrosion mode of acidizing treatment, to realize through pulse physical oscillation and
The superposition of acid solution chemolysis improves the percolation ability of reservoir, extends de-plugging distance, improves the effect of acidification, pacifies
It is complete reliable, it is simple in structure, it is easily operated, it is at low cost, it is applied widely.
Description of the drawings
The following drawings is only intended in doing schematical explanation and illustration to the present invention, not to limit the present invention model
It encloses.
Fig. 1 is the structural schematic diagram of the first embodiment of continuous impulse acidization tool of the present invention.
Fig. 2 is the structural schematic diagram of the continuous impulse generator of the first embodiment of continuous impulse acidization tool of the present invention.
Fig. 3 is the structural schematic diagram of the second embodiment of continuous impulse acidization tool of the present invention.
Fig. 4 is the structural schematic diagram of the continuous impulse generator of the second embodiment of continuous impulse acidization tool of the present invention.
Drawing reference numeral explanation：
1, oil pipe；2, packer；3, continuous impulse generator；4, shaft bottom；5, casing；6, reservoir；7, total valve；8, oil pipe
Valve；9, sleeve valve；
101, top connection；102, outer barrel；103, diversion division；104, sticking department；105, turbine；106, conduction part；107, under
Connector；108, access road；109, exit passageway；
201, top connection；202, steel ball；203, shear pin seat；204, shear pin；205, sliding sleeve；206, holder；207, turbine；
208, block；209, lower contact；210, upper chamber；211, fluid course；212, lower chambers；213, fluid outlet；214, it seals
Circle；215, silk plug.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In addition to non-individual defines the direction pointed out, the upper and lower equal directions being referred to herein are with shown in the present invention
Fig. 1 in upper and lower equal directions subject to, illustrate in this together.
As shown in Figures 1 to 4, the present invention provides a kind of continuous impulse acidization tool comprising following steps：Step a, carries
For de-plugging tubing string, the de-plugging tubing string is equipped with continuous impulse generator 3；The de-plugging tubing string is series at oil pipe 1 by step b,
It will be in the de-plugging tubing string tripping in down-hole casing 5 by the oil pipe 1；Acid solution is pumped into oil pipe 1 by step c, and the acid solution is through institute
The pulsation discharge of continuous impulse generator 3 of de-plugging tubing string is stated, and enters 6 de-plugging of reservoir；Step d is pumped into clear into the oil pipe 1
Water, until being remained without acid solution in the oil pipe 1.
Specifically, the continuous impulse acidization tool of the present invention is that de-plugging tubing string is series at oil pipe 1, in order to be lowered into set
In pipe 5 and with wait for that the reservoir 6 of de-plugging is opposite, acid solution is pumped into oil pipe 1 by pump truck, and by de-plugging tubing string to subsurface reservoir
6 inputs are acidified liquid and generate pulse effect by the continuous impulse generator 3 of de-plugging tubing string in the acidification liquid of regularity pulsation
Fruit.The continuous impulse acidization tool of the present invention realizes the organic of the effect of vibration of physical pulse and the corrosion of chemistry acid solution
In conjunction with, reach synergistic action effect, improve de-plugging operating distance and acidizing effect, can apply to all kinds of stratum, have compared with
Good universality, easy to spread, the effect especially it makes use of physical vibration wave extend de-plugging distance, simplify technology
Technique.
Further, further include step a0 before step a, i.e., before starting operation, first carry out drifting, pipe cleaning, well-flushing
Operation can start operation after the completion；Further include step c0, to construction pipeline pressure testing, specifically between step b and step c
Well head pressure (recording the pressure in the oil pipe at well head) is recorded, total valve 7 and sleeve valve 9 are closed, by pump truck and oil pipe
Valve 8 connects, and 20MPa is pumped into construction pipeline by pump truck, to be sealed to pump truck to the pipeline between total valve 7
Detection ensures construction pipeline No leakage.Step d is pumped into clear water into the oil pipe 1, until residual without acid solution in the oil pipe 1
It stays, i.e., clear water is pumped into oil pipe 1 by pump truck, makes clear water displacing acid by after acid solution all injection subsurface reservoir 6 by pump truck
For liquid to rinse oil pipe 1 and continuous impulse generator 3, clear water can enter reservoir 6, until noresidue can termination of pumping.In the step d
Further include step e later, construction pipeline of dismantling boiled in a covered pot over a slow fire well after 12 hours, and open flow drain can produce as a trial or water filling.
In the first embodiment, as depicted in figs. 1 and 2, in the step a, the de-plugging tubing string is general solution plugging
Column, the general de-plugging tubing string include a continuous impulse generator 3 and a packer 2, and the reservoir 6 includes at least
One sub- reservoir, in the step b, the packer 2 and the continuous impulse generator 3 are sequentially connected in series from top to bottom in institute
Oil pipe 1 is stated, the packer 2 is located at the top of the reservoir 6, by the space in the casing 5 opposite with reservoir 6 in packer
Closing is realized between 2 and shaft bottom 4, to carry out de-plugging to each sub- reservoir of reservoir 6 simultaneously, is made using the physics of waterpower pulse
It is superimposed with the chemical corrosion with acid solution, to improve acidification radius and function and effect, wherein packer 2 is existing
Known structure (Y221 types or Y521 types packer as set mode using rotation) in technology, details are not described herein, sits
Envelope is reliable, casing 5 more than energy effective protection construction interval, and completes to insulate, and avoids acidification liquid flows upwards, wherein institute
When the general de-plugging stated is directed to a reservoir or multiple reservoirs, de-plugging simultaneously, namely traditional de-plugging, it is relative to layering
For de-plugging.
Further, the continuous impulse generator 3 is located at the lower end of the oil pipe 1, makes from continuous impulse generator 3
The liquid with pulsatile effect that exit passageway 109 is discharged can quickly enter reservoir 6, the continuous arteries and veins after being directly entered casing 5
It is opposite with the reservoir 6 to rush generator 3, when reservoir 6 includes multiple sub- reservoirs being spaced side by side, continuous impulse generator 3 is big
The top for being located at the sub- reservoir of the top positioned at the centre position of multiple sub- reservoirs or continuous impulse generator 3 is caused, in favor of
Liquid with pulsatile effect can quickly enter each reservoir 6, and when reservoir 6 includes a sub- reservoir, continuous impulse generator 3 is big
Cause is opposite with the sub- reservoir or positioned at the top of the sub- reservoir.
Further, as shown in Fig. 2, the continuous impulse generator 3 includes：Outer barrel 102 can be series at the oil pipe
On 1, the rotation of 102 interior energy of the outer barrel is equipped with turbine 105；Diversion division 103 is set in the outer barrel 102, the diversion division
103 are located at the top of the turbine 105, run through equipped with eccentric access road 108 on the diversion division 103；Conduction part 106,
It is set in the outer barrel 102, and the conduction part 106 is located at the lower section of the turbine 105, runs through in the conduction part 106 and sets
There is exit passageway 109, can be pulsed and be arranged from the exit passageway 109 through the turbine 105 by the liquid of the access road 108
Go out.Specifically, outer barrel 102 is substantially cylindrical in shape, to accommodate turbine 105, diversion division 103 and conduction part 106, turbine 105 can rotate
Be set in outer barrel 102, so that liquid (such as being acidified liquid) is generated pulsation effect, and turbine 105 enters with diversion division 103 respectively
The exit passageway 109 of mouth channel 108 and conduction part 106 is corresponding, to receive the acidification liquid from access road 108, and will
It generates the acidification liquid after pulsation effect to be discharged from exit passageway 109, diversion division 103 is substantially cylindrical in shape, and its top surface one end is high
One end is low, for by the liquid drain in oil pipe 1, making liquid run through access road 108 and impact and being located at access road 108
The turbine 105 of lower section makes acidification liquid generate pulsatile effect with rotation by turbine 105, and conduction part 106 is substantially cylindrical in shape,
For that will have the acidification liquid of pulsatile effect to draw continuous impulse generator through its exit passageway 109, and then it is real to enter reservoir 6
Existing de-plugging.
Further, as shown in Fig. 2, fixed sticking department 104, sticking department 104 are used to that turbine to be arranged in the outer barrel 102
105, the top and bottom of the sticking department 104 are connected to the diversion division 103 and the conduction part 106, i.e. sticking department respectively
104 are arranged between diversion division 103 and conduction part 106, in the sticking department 104 laterally (i.e. Fig. 2 shows vertical paper side
To) fixed installation axle, what can be rotated in the installation axle is equipped with the turbine 105, specifically, lock is fixed at the both ends of installation axle
Determine portion 104, i.e. installation axle can not be rotated in stationary state, bearing be arranged in installation axle, turbine 105 is set by what bearing can rotate
In in installation axle, wherein the central axis of the installation axle and the central axis of the outer barrel 102 are perpendicular.
Further, the sticking department 104 includes the clamping block of two valve arcs, and the clamping block, which is equipped with, supplies the peace
Dress axis wears fixed trepanning, specifically, the inner wall of the outer wall and outer barrel 102 of two valve clamping blocks of sticking department 104 matches, makes
Sticking department 104 can be bonded the inner wall for being fixed on outer barrel 102, and two valve clamping blocks of sticking department 104 are circumferential to be symmetrically set to outer barrel 102
Interior, the radian of each clamping block can be 180 degree, and two clamping blocks is made to surround circular ring shape, or the radian of each clamping block is less than
180 degree makes to form gap between two clamping blocks, the trepanning on two clamping blocks diametrically, in order to the fixation of installation axle.
Further, as shown in Fig. 2, the upper end of the outer barrel 102 is equipped with top connection 101, the upper end of the diversion division 103
It is abutted against with the lower end of the top connection 101, the lower end of the outer barrel 102 is equipped with lower contact 107, under the conduction part 106
The upper end with the lower contact 107 is held to abut against, the outer barrel 102 is connected by the top connection 101 and the lower contact 107
In the oil pipe 1, specifically, the inner wall of the upper end of outer barrel 102 is equipped with internal thread, the outer wall of 101 lower end of top connection is equipped with outer spiral shell
Line makes the lower end of top connection 101 stretch into outer barrel 102 and is spirally connected with outer barrel 102, stretches under the top connection 101 in outer barrel 102
End face is connected to the upper surface of diversion division 103, and the inner wall of the lower end of outer barrel 102 is equipped with internal thread, the outer wall of 107 upper end of lower contact
Equipped with external screw thread, so that the upper end of lower contact 107 is stretched into outer barrel 102 and be spirally connected with outer barrel 102, connect under stretching into outer barrel 102
First 107 upper surface is connected to the lower face of conduction part 106, and the inner wall of the upper end of top connection 101 is equipped with internal thread, lower contact
The outer wall of 107 lower end is equipped with external screw thread, and in order to be connect with oil pipe 1, for the connection type of tubing string using being threadedly coupled, structure is simple
It is single, it is easily operated.
Further, as shown in Fig. 2, between the top connection 101 and the outer barrel 102 and the lower contact 107 and institute
It states and is equipped at least one sealing ring between outer barrel 102, to ensure the sealing between contact component two-by-two, preferably, top connection
It is all provided between lower contact 107 and outer barrel 102 that there are two sealing rings between 101 and outer barrel 102.
Further, as shown in Fig. 2, the left side top surface of the diversion division 103 is pushed up less than the right side of the diversion division 103
Face, left side top surface to the left-leaning inclined-plane of formation between the access road 108, the right side of the diversion division 103 of the diversion division 103
Side top surface is located at the outer barrel to Right deviation inclined-plane, the central axis of the access road 108 is formed between the access road 108
Between 102 central axis and the left side top surface of the diversion division 103, i.e. the central axis of access road 108 and outer barrel 102
Central axis deviates namely the area on Right deviation inclined-plane is more than the area on "Left"-deviationist inclined-plane, so that guiding fluid is along right bank
Face accelerates into access road 108, that is, is acidified liquid under the limitation of diversion division 103, flow direction can be concentrated to be located in outer barrel 102
Access road 108 on the left of mandrel line is rotated with impulse turbine 105, wherein Right deviation inclined-plane can be flat with left-leaning inclined-plane
Face can also be cambered surface.
Further, as shown in Fig. 2, the cross-sectional area of the upper end of the exit passageway 109 of the conduction part 106 is more than described
The cross-sectional area of the lower end of exit passageway 109 improves flow velocity, reinforces its pulsatile effect, conduction part to accelerate to acidification liquid
The central axis of 106 exit passageway 109 is conllinear with the central axis of outer barrel 102 namely the central axis of exit passageway 109 with
The central axis of access road 108 deviates (i.e. not conllinear), specifically, the exit passageway 109 of conduction part 106 from top to bottom according to
Secondary includes the first gentle section, the first converging transition, the second gentle section, the second converging transition and the gentle section of third, the first gentle section, second
Gentle section and the gentle section of third are cylindrical, and the first converging transition and the second converging transition are in a circular table shape, the first gentle section it is straight
Diameter is more than the diameter of the second gentle section, and the diameter of the second gentle section is more than the diameter of the gentle section of third or going out for conduction part 106
Mouth channel 109 is in a circular table shape.
In the first embodiment, the present invention can be used for the reservoir 6 to only including a sub- reservoir, or including two or more
The reservoir 6 of sub- reservoir is carried out at the same time de-plugging, and (wherein figure 1 illustrate to the reservoir 6 including three sub- reservoirs as depicted in figs. 1 and 2
De-plugging simultaneously), tripping in de-plugging tubing string until continuous impulse generator 3 close to the sub- reservoir in the top or with intermediate sub- reservoir phase
It is right, and packer 2 is located at the top of the sub- reservoir in the top, after completion packer 2 is set, to construction pipeline pressure testing, after pressure testing, then
Total valve 7 and tubing valve 8 are opened, acidifying solution is pumped by oil pipe 1 by pump truck, slowly pump note, makes pressure be stepped up control
In 18Mpa, acidifying solution is set to enter access road 108 under the guiding of two inclined surface of diversion division 103, from access road 108
The acidifying solution impulse turbine 105 of discharge makes turbine 105 rotate, and turbine 105 stirs acidifying solution while rotation, makes acidifying solution
Regularity flowing (i.e. pulse feature impacts) is generated, there is the acidification liquid of regularity flowing to enter the exit passageway of conduction part 106
109 can only enter reservoir 6, realize disposable de-plugging while each sub- reservoir to reservoir 6, during pumping note, rationally control
Operation pressure ensures construction safety.
In a second embodiment, as shown in Figure 3 and Figure 4, in the step a, the de-plugging tubing string is layering solution plugging
Column, the layering de-plugging tubing string include at least two continuous impulse generators, 3 and at least two packer 2, the reservoir 6
Including at least two sub- reservoirs, in the step b, what the continuous impulse generator 3 and the packer 2 interlocked is series at
The lower end of oil pipe 1, the oil pipe 1 is equipped with silk plug 215, and the continuous impulse generator 3 is horizontal opposite one by one with the reservoir 6,
The diameter of the steel ball 202 of at least two continuous impulse generators 3 is sequentially increased from bottom to top, i.e., at adjacent two two-by-two
In continuous impulse generator 3, the diameter of the steel ball 202 of the continuous impulse generator 3 of lower section is less than the continuous impulse generation of top
The diameter of the steel ball 202 of device 3, namely the diameter of steel ball 202 positioned at the continuous impulse generator 3 of bottom are minimum, are located at most
The diameter of the steel ball 202 of the continuous impulse generator 3 of top is maximum, make at least two continuous impulse generators 3 from bottom to top according to
Task, to carry out de-plugging to each sub- reservoir of reservoir 6 respectively.
Specifically, the outer diameter of the sliding sleeve 205 of at least two continuous impulse generators 3 is equal, at least two continuous impulses hair
The diameter of the internal diameter and steel ball 202 of the sliding sleeve 205 of raw device 3 matches, wherein in two adjacent continuous impulse generators 3,
The continuous impulse generator 3 of lower section has been opened, and de-plugging is completed in corresponding sub- reservoir, continuous impulse generator 3 above
When opening, i.e., after the sliding sleeve 205 of the continuous impulse generator 3 of top and steel ball 202 glide, the continuous impulse generator 3 of top
Being arranged at the boss of its lower contact 209 of can sealing of sliding sleeve 205, realize the sealing in downward channel, avoid acid solution followed by
Continuous continuous impulse generator 3 downwards flows；Packer 2 to set pressure anti-less than the shear pin of continuous impulse generator 3
Shearing force, wherein packer 2 are structure well known in the prior art, and the setting value for setting pin of packer 2 is 15MPa, even
The setting value of the shear pin of continuous impulse generator 3 is 18MPa, and when input steel ball 202 is arranged on sliding sleeve 205, fluid pressure reaches
When to 15MPa, all packers 2, which are fully completed, to be set, and when fluid pressure reaches 18MPa, shear pin is cut, and is started to the company
The acid solution for continuing the corresponding sub- reservoir injected pulse oscillation of impulse generator, to be layered carry out de-plugging；The number of continuous impulse generator 3
The quantity of amount, the quantity of packer 2 and sub- reservoir is equal, and each continuous impulse generator 3 corresponds to a sub- reservoir, Mei Gelian
The top of continuous impulse generator 3 is in a packer 2 of connecting on oil pipe 1.
Further, as shown in figure 4, the continuous impulse generator 3 includes：Outer barrel can be series at the oil pipe 1
On, the outer barrel includes top connection 201 and the lower contact being connected with the top connection 201 209, the side wall of the lower contact 209
Equipped with fluid outlet 213；Sliding sleeve 205, what can be detached is fixedly arranged in the outer barrel, and the upper end of the sliding sleeve 205 is equipped with and can block
If the ball seat of steel ball 202 encloses between the sliding sleeve 205 and the top connection 201 and the lower contact 209 and sets to form accommodating chamber,
Holder 206 is equipped in the accommodating chamber, the accommodating chamber is divided into upper chamber 210 and lower chambers 212, institute by the holder 206
It states holder 206 and is equipped with the fluid course 211 for being connected to the upper chamber 210 and the lower chambers 212, in the lower chambers 212
Equipped with turbine 207, the liquid that the lower chambers 212 are entered by the fluid course 211 can be through the turbine 207 from the liquid
The pulsation discharge of outflux 213.
Specifically, as shown in figure 4, the top connection 201 of outer barrel is substantially cylindrical in shape, the upper end has internal thread, for connecting
Oil pipe, lower end have external screw thread, and the lower contact 209 of outer barrel is also substantially cylindrical in shape, and the upper end has internal thread, for above connect
The external thread bolt connection of first 201 lower end, lower end have external screw thread, are used for connected pipes, and the connection type of screw thread, makes between tubing string
It is simple in structure, it is easily operated；Sliding sleeve 205 is substantially cylindrical, can slide and what can be detached is fixedly arranged in outer barrel, sliding sleeve 205
Upper end inner wall be in open-like shape, with formed can for steel ball 202 block sit ball seat, sliding sleeve 205 is not when working, with top connection
201 and lower contact 209 distinguish it is in sealing contact, to close accommodating chamber, and at work, fluid pressure effect under, sliding sleeve 205 goes out
It now slides, realizes the inner cavity of outer barrel and the connection of accommodating chamber, so that liquid is entered the upper chamber 210 of accommodating chamber, and logical through liquid stream
Road 211 enters lower chambers 212, and the turbine 207 impacted in lower chambers 212 makes its rotation, turbine 207 liquid can be driven to send out when rotating
Raw pulsation, and pulse and be discharged from fluid outlet 213, increase impulse hunting effect.
Further, the sliding sleeve 205 is connected with the top connection 201 of the outer barrel by shear pin 204, with when not working
Fixed sliding sleeve 205, avoids sliding sleeve 205 from moving down and the inner cavity of outer barrel is made to be connected to accommodating chamber, while when needing work, passes through throwing
Enter 202 liquid of steel ball to suppress, to cut shear pin 204, realizes that sliding sleeve 205 moves down under the action of fluid pressure, realize outer barrel
The connection of inner cavity and accommodating chamber makes shear pin 204 be arranged in and cuts preferably, can be spirally connected shear pin seat 203 in the inner wall of top connection 201
In nail seat 203 and sliding sleeve 205, of course, it is possible to which sliding sleeve 205 is made to be connected by shear pin with the lower contact 209 of outer barrel, do not limit herein
System；The inner wall projection necking part at the middle part of the top connection 201, between the necking part and the lower face of the top connection 201
Equipped with ladder recessed portion, the recessed annular recess of inner wall on the top of the lower contact 209, recessed energy in the annular recess
The groove of turbine 207 is accommodated, the holder 206 is arranged in the end of the lower face and the annular recess of the top connection 201
Between face, specifically, top connection 201 generallys include upper, middle and lower, the outer diameter of upper part is less than the outer diameter of its underpart,
Its middle part forms cone cylinder shape between being connected to upper and lower part, and the internal diameter at middle part is less than the internal diameter on top, and necking part is convexly equipped in
The inner wall at middle part, so that the upper end of sliding sleeve 205 is in sealing contact, the ladder recessed portion that the inner wall of the lower part of top connection 201 is recessed is
Two layers is ladder-like (as shown in Figure 4), and be spirally connected shear pin seat 203 at the internal face of the first layer ladder at necking part, in order to
Shear pin 204 is worn, between the annular recess of lower contact 209 and the ladder recessed portion of top connection 201 and the outside wall surface of sliding sleeve 205
Upper chamber 210 is formed together, recessed groove on the end face (i.e. lower face) of annular recess, the space composition lower chambers in groove
212, holder 206 is substantially cylindrical in shape, and the bottom surface of holder 206 is plane, and the outside of the top surface of holder 206 is plane, holder 206
The inside of top surface is the inclined-plane tilted down, which is equipped with the fluid course 211 through holder 206, the bottom surface of holder 206
Be arranged in the end face of annular recess, be arranged in the lower face of top connection 201 on the outside of the top surface of holder 206, holder 206 it is oblique
The setting in face enters convenient for liquid in fluid course 211.
Further, fixed installation axle in the groove, what the turbine 207 can rotate is set in the installation axle, institute
The extending direction for stating installation axle is vertical with the extending direction of the fluid course 211, specifically, being laterally fixedly mounted in groove
Axis, i.e. installation axle can not be rotated in stationary state, and bearing is arranged in installation axle, and turbine 207 is set to peace by what bearing can rotate
It filling on axis, wherein the extending direction of fluid course 211 is the direction (namely upper and lower directions shown in Fig. 4) for being parallel to central shaft,
The extending direction of installation axle is the direction of the vertical paper shown in Fig. 4, it is preferred that can also be set the lower section of turbine 207 in groove
Block 208 is set, the lower face contact of block 208 can run through setting and fluid outlet 213 on the lower face of groove, block 208
Corresponding through-hole.
Further, as shown in figure 4, between the sliding sleeve 205 and the necking part of the top connection 201, the sliding sleeve
It is equipped between the top connection 201 and the lower contact 209 between 205 and the inner wall of the lower contact 209 at least one
Sealing ring 214, to ensure the sealing between contact component two-by-two, preferably, between sliding sleeve 205 and the necking part of top connection 201
Two sealing rings 214 of the setting that can be spaced, two sealing rings of the setting that can be spaced between sliding sleeve 205 and the inner wall of lower contact 209
214, a sealing ring can be set between top connection 201 and lower contact 209.
Further, as shown in figure 4, the lower contact 209 include upper, middle and lower, the lower contact 209 it is upper
The outer diameter in portion is more than the outer diameter of the lower part of the lower contact 209, and the middle part of the lower contact 209 is cone cylinder shape, specifically, under connect
The internal diameter of the internal diameter of first 209 lower part, the internal diameter at middle part and top is equal, and the internal diameter of the lower contact of lower contact 209 is equal to
The internal diameter of the necking part at the middle part of top connection 201 connects in order to which 205 upper and lower ends of sliding sleeve are sealed in top connection 201 simultaneously under
First 209.In one embodiment, the fluid outlet 213 axially penetrates through the middle part of the lower contact 209, the fluid outlet 213
Setting (as shown in Figure 4) is axially offset with the fluid course 211；In another embodiment, the fluid outlet 213 is radial passes through
The top of the lower contact 209 is worn, the fluid outlet 213 is vertically arranged (not shown) with the fluid course 211.
Further, as shown in figure 4, the inner wall projection boss of the lower part of the lower contact 209, the internal diameter of the boss are small
It in the outer diameter of the sliding sleeve 205, is limited with the sliding sleeve 205 to downslide, in 205 He of sliding sleeve of the continuous impulse generator
In the state that steel ball 202 is swept away by fluid pressure, the boss for being arranged in the lower contact 209 that the sliding sleeve 205 can seal, energy
Prevent downward liquid flow.
In a second embodiment, the present invention is to two sub- reservoirs or multiple sub- reservoirs for carrying out layering de-plugging, such as Fig. 3 and
Shown in Fig. 4, Fig. 4 shows two sub- reservoirs, two packers 2 and two continuous impulse generators 3, names from top to bottom respectively
It is first and second, is distinguished with showing, when running string, the first continuous impulse generator and the second continuous impulse generator is in
Closed state after pressure testing, is first turned on total valve 7 and tubing valve 8, puts into the steel of a diameter of 24mm to construction pipeline pressure testing
Ball, the steel ball are set in the ball seat of the second continuous impulse generator, and acid solution is pumped into oil pipe 1 with pump truck, and slowly pump note, makes pressure
Power is stepped up to 15MPa, and the first packer and the second packer are all set, and continues pump note, when pressure rises to 18MPa,
Shear pin 204 is cut, and steel ball 202 and sliding sleeve 205 glide, and the second continuous impulse generator is opened, and acid solution is through the second continuous impulse
The turbine 207 of generator flows out after generating pulsation effect from the pulsation of fluid outlet 213, and acid solution is squeezed second according to design quantity
Reservoir completes the de-plugging of the second reservoir, termination of pumping and the steel ball 202 for putting into a diameter of 32mm, acid solution is pumped into oil pipe 1 with pump truck
It is interior, steel ball 202 is pushed, pressure is made to be stepped up to 18MPa, abrupt pressure reduction completes the opening of the first continuous impulse generator,
205 slide downward of sliding sleeve of first continuous impulse generator at this time completes the closing to the second continuous impulse generator, prevents acid
Liquid injects the first reservoir into the second continuous impulse generator, by acid solution, realizes the de-plugging to the first reservoir, so realizes certainly
Successively de-plugging on down.
It is equipped with turbine in continuous impulse generator 3 on the de-plugging tubing string of the present invention, acid solution is made to pass through the company of de-plugging tubing string
Continuous impulse generator 3, using the power of acid solution come impulse turbine, turbine rotation makes acid solution stir lower rotation in turbine, and then makes
Acid solution generates regular pulse and flows out, i.e., the turbine of continuous impulse generator 3 of the acid solution through de-plugging tubing string generates pulsation and arteries and veins
Dynamic discharge, periodically compression is generated using impulse wave in stratum, and the medium in excited vibrational field makes medium particle
Physical quantity generation changes repeatedly, causes to be deposited on the intrapore solid adhesion of oil reservoir and gradually loosens, detaches, realization physics and change
The de-plugging mode being combined is learned, changes the single chemical corrosion mode of acidizing treatment, increases acid solution treatment radius, improve solution
Stifled effect, securely and reliably, simple in structure, easily operated, at low cost, the present invention can utilize the energy production pulse of pump fluid injection body to imitate
Fruit acts on without additional energy, and impulse action can make acidification liquid enter stratum with wave, and this wave energy is with strong
Alternating pressure act on stratum, and can also base area layer and acidification technique demand, select corresponding continuous impulse to occur
Device, it is adaptable to select corresponding general de-plugging or layering de-plugging.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, has in any technical field
Usual skill, in the range of not departing from technical solution of the present invention, when the technology contents using the disclosure above make it is a little
The equivalent embodiment of equivalent variations is changed or is modified to, as long as being the content without departing from technical solution of the present invention, according to the present invention
Technical spirit to any simple modification, equivalent change and modification made by above example, still fall within the technology of the present invention side
In the range of case.
Claims (9)
1. a kind of continuous impulse acidization tool, which is characterized in that the continuous impulse acidization tool includes the following steps：
Step a, provides de-plugging tubing string, and the de-plugging tubing string is equipped with continuous impulse generator；
The de-plugging tubing string is series at oil pipe by step b, will be in the de-plugging tubing string tripping in down-hole casing by the oil pipe；
Acid solution is pumped into oil pipe by step c, and continuous impulse generator pulsation discharge of the acid solution through the de-plugging tubing string is gone forward side by side
Enter reservoir blockages relieving；
Step d is pumped into clear water into the oil pipe, until being remained without acid solution in the oil pipe.
2. continuous impulse acidization tool according to claim 1, which is characterized in that the de-plugging tubing string is general solution plugging
Column, the general de-plugging tubing string include a continuous impulse generator and a packer, and the reservoir includes at least one
A sub- reservoir, the packer and the continuous impulse generator are sequentially connected in series from top to bottom in the oil pipe, the packer
Positioned at the top of the reservoir.
3. continuous impulse acidization tool according to claim 2, which is characterized in that the continuous impulse generator is located at institute
The lower end of oil pipe is stated, the continuous impulse generator is opposite with the reservoir or positioned at the top of the reservoir.
4. continuous impulse acidization tool according to claim 2, which is characterized in that the continuous impulse generator includes：
Outer barrel can be series on the oil pipe, and the outer barrel interior energy rotation is equipped with turbine；
Diversion division is set in the outer barrel, and the diversion division is located at the top of the turbine, runs through on the diversion division and is equipped with
Eccentric access road；
Conduction part is set in the outer barrel, the drain site on the lower section of the turbine, the conduction part through being equipped with
Exit passageway can be pulsed from the exit passageway through the turbine by the liquid of the access road and is discharged.
5. continuous impulse acidization tool according to claim 4, which is characterized in that fixed sticking department in the outer barrel, institute
The top and bottom for stating sticking department are connected to the diversion division and the conduction part respectively, laterally fixed installation in the sticking department
Axis, what can be rotated in the installation axle is equipped with the turbine, the central axis of the central axis of the installation axle and the outer barrel
It is perpendicular.
6. continuous impulse acidization tool according to claim 1, which is characterized in that the de-plugging tubing string is layering solution plugging
Column, the layering de-plugging tubing string include at least two continuous impulse generators and at least two packers, the reservoir packet
Include at least two sub- reservoirs, what the continuous impulse generator and the packer interlocked be series at oil pipe, under the oil pipe
End is equipped with silk plug, and the continuous impulse generator is horizontal opposite one by one with the reservoir, and at least two continuous impulses occur
The diameter of the steel ball of device is sequentially increased from bottom to top.
7. continuous impulse acidization tool according to claim 6, which is characterized in that the continuous impulse generator includes：
Outer barrel can be series on the oil pipe, and the outer barrel includes top connection and the lower contact that is connected with the top connection, institute
The side wall for stating lower contact is equipped with fluid outlet；
Sliding sleeve, what can be detached is fixedly arranged in the outer barrel, and the upper end of the sliding sleeve, which is equipped with, can block the ball seat for setting steel ball, the cunning
It is enclosed between set and the top connection and the lower contact and sets to form accommodating chamber, holder is equipped in the accommodating chamber, the holder will
The accommodating chamber is divided into upper chamber and lower chambers, and the holder is equipped with the liquid stream for being connected to the upper chamber and the lower chambers
Channel, the bottom chamber be equipped with turbine, by the fluid course enter the lower chambers liquid can through the turbine from
The fluid outlet pulsation discharge.
8. continuous impulse acidization tool according to claim 7, which is characterized in that the sliding sleeve connects on the outer barrel
Head is connected by shear pin, the inner wall projection necking part at the middle part of the top connection, the lower end of the necking part and the top connection
Ladder recessed portion, the recessed annular recess of inner wall on the top of the lower contact, the annular recess fovea superior are equipped between face
If the groove of turbine can be accommodated, the bracket clamp be set to lower face and the annular recess of the top connection end face it
Between.
9. continuous impulse acidization tool according to claim 8, which is characterized in that fixed installation axle in the groove, institute
That states that turbine can rotate is set in the installation axle, and the extending direction of the installation axle and the extending direction of the fluid course hang down
Directly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810370226.9A CN108708696A (en) | 2018-04-24 | 2018-04-24 | Continuous pulse acidification method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810370226.9A CN108708696A (en) | 2018-04-24 | 2018-04-24 | Continuous pulse acidification method |
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| CN108708696A true CN108708696A (en) | 2018-10-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111379545A (en) * | 2020-04-17 | 2020-07-07 | 中国石油天然气集团有限公司 | Deep conglomerate heavy oil reservoir blockage removing and injection increasing method |
| CN112459755A (en) * | 2019-09-06 | 2021-03-09 | 中国石油天然气股份有限公司 | Pulse jet generator, generating device, water injection and blockage removal integrated tubular column and method |
| CN112523737A (en) * | 2020-10-23 | 2021-03-19 | 西安石油大油气科技有限公司 | Oil well acidification process and device for improving oil and gas well yield |
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Application publication date: 20181026 |