CN110424923A - Accumulation packing particle is realized from the method for water blockoff, from water plugging string and completion structure - Google Patents
Accumulation packing particle is realized from the method for water blockoff, from water plugging string and completion structure Download PDFInfo
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- CN110424923A CN110424923A CN201910721548.8A CN201910721548A CN110424923A CN 110424923 A CN110424923 A CN 110424923A CN 201910721548 A CN201910721548 A CN 201910721548A CN 110424923 A CN110424923 A CN 110424923A
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- water
- oil
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- string
- packing
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
A method of it is realized by accumulating packing particle in oil-water interfaces from water blockoff, comprising the following steps: into the fracture hole of pit shaft production section, injection packing particle, the packing particle form stack layer in oil-water interfaces；To pit shaft production section tripping in be equipped with sectioning and blanking plug from water plugging string, the sectioning is separated into multiple independent sub- production sections for section is produced；After operation, oil-water interfaces are gradually risen, until one or more sons produce section part water breakthrough；Particle is insulated under the rolling action of water, blanking plug is blocked, realize son production section from water blockoff.This method of the present invention overcome needed in traditional construction technique artificial water detection in advance exclusively carry out closure, in production process repeatedly water detection water blockoff the drawbacks of, it realizes before going into operation it is not necessary that the function of carrying out automatic plugging can be discharged after water detection, operation to fracture hole, operating process is simple and easy to do, it is low in cost, save the time, be greatly improved production efficiency.
Description
Technical field
The invention belongs to oil and natural gas production technique field, it is related to a kind of carrying out water blockoff for fracture hole type oil-gas reservoir
Technology realizes the method from water blockoff, one kind in grease more particularly to a kind of by accumulating packing particle in oil-water interfaces
Interface accumulation packing particle realizes realizing by accumulating packing particle in oil-water interfaces from water plugging string, and one kind from water blockoff
From the completion structure of water blockoff.
Background technique
In fracture hole type oil well production process, due to the difference of viscosity ratio of oil and water in the heterogeneity on stratum at crack or solution cavity
Different, the speed of flow of formation water is greater than the speed even moved much larger than oil stream, and the speed for causing oil-water interfaces to be lifted is different, makes
It is discharged at the part of oil well.(water prolongs the channelling of pit shaft axial direction) is endangered to prevent part to be discharged to bring, needs to carry out water-blocking operation.
Currently, high-water-cut oil-producing well, the major way of water blockoff is first water detection, then passes through chemistry or the side of packer card envelope
Formula carries out water blockoff.Chemical water shutoff validity period is short；The mode water blockoff of packer card envelope is at low cost and easy to operate, but two kinds of water blockoffs
Mode requires water detection, and water detection is at high cost, and difficulty is very big, is the more insoluble problem in one, oil field.And after water blockoff, occur
New EXIT POINT, it is also necessary to which water detection repeatedly, water blockoff, carries out multiplicating operation again；Horizontal well horizontal segment is long simultaneously, and one
Secondary drilling well passes through multiple solution cavities or crack, and the different height of speed that water rises, water discharging time is not also identical, is selected
The water blockoff of property.
Therefore, to solve the above-mentioned problems, urgent need provides one kind and does not need water detection and realize in water exit end from water blockoff function
Technical solution.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, provide a kind of by accumulating the realization of packing particle from water blockoff
Method, from water plugging string and completion structure, realize the automatic water plugging of fracture hole type oil well in process of production.
To achieve the above object, present invention employs following technical solutions:
A method of it is realized by accumulating packing particle in oil-water interfaces from water blockoff, comprising the following steps: produce section to pit shaft
Fracture hole in injection packing particle, the packing particle oil-water interfaces formation stack layer；It is equipped with and divides to pit shaft production section tripping in
Section apparatus and plugging hole from water plugging string, the sectioning is separated into multiple independent sub- production sections for section is produced；It throws
Postpartum, oil-water interfaces gradually rise；After one or more son production section part water breakthroughs, rolling action of the packing particle in water
Under, blanking plug is blocked, realize water exit end in production section from water blockoff.
Further, it is described to pit shaft production section fracture hole in injection packing particle method are as follows: for open hole well, directly to
Pit shaft produces the packing fluid that section injection carries packing particle, and packing particle forms stack layer 3 in oil-water interfaces；For being equipped with from stifled
The pit shaft of water pipe column, to the packing fluid of the injection carrying packing particle from the corresponding borehole wall fracture hole of water plugging string, packing particle exists
Oil-water interfaces form stack layer 3.
Further, the method for the injection packing particle into the fracture hole of pit shaft production section are as follows: according to pre-prepd survey
The tripping in into pit shaft of well data fills tubing string, and position corresponding with fracture hole position is equipped with injection valve 2 on the filling tubing string, described
The two sides of injection valve 2 are equipped with card sealed packer 1；The packing fluid of packing particle is carried by filling tubing string injection.
Further, the sectioning is the slug for meeting liquid swell packers 8 or injecting glue formation.
Further, the method that slug is formed by injecting glue are as follows: (s1) treats block section progress by card sealed packer 1
Card seals, and rubber injecting valve 2 is housed between the card sealed packer 1；(s2) injecting glue tubing string is lowered into innermost destination layer, to target
Layer injection glue；(s3) injecting glue tubing string is dragged outward, successively to the destination layer injecting glue shallowly located, until completing setting for all slugs
It sets.
Further, the density (real density) of the packing particle is less than stratum water density and is greater than oil density,
Partial size is 16-100 mesh.
Further, the volume of the injection packing particle is greater than the annular space volume between two sectionings, or is greater than life
Produce the total measurement (volume) of section annular space.
To achieve the above object, the present invention additionally uses following technical solution:
It is a kind of to realize for accumulating packing particle in oil-water interfaces from water blockoff from water plugging string, including be equipped with flowing hole 62 from
Water plugging string ontology 61 is arranged in from the intercept net 63 in front of the flowing hole 62 of water plugging string ontology 61, and is arranged and is intercepting
Net the plugging hole 66 in front；The feed liquor that production liquid in pit shaft can be constituted via plugging hole 66, intercept net 63, flowing hole 62 is logical
Road, into from inside water plugging string ontology 61；The aperture of the intercept net 63 is less than the partial size of packing particle, for preventing packing
Particle is entered by flowing hole 2 from inside water plugging string ontology 61；The plugging hole 66 is long and narrow cavity body structure, for accumulating
The packing particle that intercepted net 63 prevents, to realize the blocking of feed pathway.
Further, described that sectioning is additionally provided with from water plugging string；The sectioning is setting from water plugging string
The circumferential slug for meeting liquid swell packers 8 or injecting glue formation of ontology.
Further, it is described from water plugging string be pipe nipple from water plugging string, two or more pipe nipples between water plugging string also
Equipped with sectioning, the sectioning is the tubing string for being circumferentially with the slug for meeting liquid swell packers 8 or injecting glue formation.
Further, described to be equipped with the one or more groups of flowing holes 62 being used cooperatively, intercept net from water plugging string ontology 61
63 and plugging hole 66.
Further, the outer jointing jacket 64 of loop overlapping shape is equipped with outside the intercept net.
Further, one end of the outer jointing jacket 64 with from water plugging string ontology 61 seal fix, the other end be fixed on
It seals and fixes from the overcurrent ring 65 of the loop overlapping shape on water plugging string ontology 61；It is equipped with inside the overcurrent ring 65 one or more stifled
Consent 66；Gap, intercept net 63 and flowing hole 62 between the plugging hole 66, outer jointing jacket 64 and intercept net 63 collectively form
Mineshaft annulus is connected to by feed pathway with from inside water plugging string ontology 61.
To achieve the above object, the present invention additionally uses following technical solution:
It is a kind of to insulate completion structure of the particle realization from water blockoff by accumulating in oil-water interfaces, it is characterised in that: the complete well is raw
The oil-water interfaces for producing the fracture hole of section are equipped with the stack layer 4 formed by packing particle, and it includes segmentation dress that the pit shaft production section, which is equipped with,
It sets with blanking plug 6 from water plugging string, it is described to be suspended on wellbore casing from water plugging string by hanging packer 7.
A kind of accumulation packing particle of the present invention is realized from the method for water blockoff, from water plugging string and completion structure, by preparatory
Setting packing particle will block, while two after the water in fracture hole enters pit shaft from water plugging string automatically in fracture hole
Under the action of the sectioning of side, water or packing particle channelling in the wellbore are limited, fracture hole is gone out into water management in office to realize
The son production section in portion.This method, which overcomes, needs artificial water detection in advance to exclusively carry out closure, production process in traditional construction technique
In repeatedly water detection water blockoff the drawbacks of, the function for carrying out automatic water plugging can be discharged without water detection, after operation to fracture hole by realizing before going into operation
Can, operating process is simple and easy to do, it is low in cost, save the time, water plugging effect is good, can be obviously improved oil well production efficiency.
Detailed description of the invention
Fig. 1 is to be stitched by accumulating in method of the packing particle realization from water blockoff in oil-water interfaces in pit shaft described in embodiment 1
The schematic diagram of injection packing particle in hole.
Fig. 2 is certainly stifled by accumulating tripping in method of the packing particle realization from water blockoff in oil-water interfaces described in embodiment 1
Water pipe column schematic diagram.
Fig. 3 is to be illustrated described in embodiment 1 by accumulating packing particle in oil-water interfaces and realizing from the principle of the method for water blockoff
Figure.
Fig. 4 is described in embodiment 2 for accumulating knot from water plugging string of the packing particle realization from water blockoff in oil-water interfaces
Structure schematic diagram.
Fig. 5 is described in embodiment 3 by accumulating completion structure schematic diagram of the packing particle realization from water blockoff in oil-water interfaces.
Fig. 6 is described in embodiment 4 by accumulating completion structure schematic diagram of the packing particle realization from water blockoff in oil-water interfaces.
Specific embodiment
Below in conjunction with attached drawing 1 to Fig. 5, further illustrate a kind of accumulation packing particle of the present invention realize the method from water blockoff,
From the specific embodiment of water plugging string and completion structure.A kind of accumulation packing particle of the present invention realize from the method for water blockoff, from
Water plugging string and completion structure are not limited to the following description.
Definitions used herein are as follows:
Completion tubular column: tripping in pit shaft produces the tubing string for production in section, usually cavity-like structure, and surface is equipped with flowing hole,
Hollow inside is oil-producing channel；The annular space formed between tubing string and the borehole wall, referred to as annular space；From stifled described in this patent
Water pipe column also belongs to a kind of completion tubular column.
Water-control sieve tube: being a kind of concrete form of completion tubular column, and (being to come liquid direction, similarly hereinafter), which is equipped with, in front of flowing hole uses
The outer jointing jacket for protecting intercept net not damaged by the borehole wall is additionally provided with above the intercept net of sand control, usual intercept net.
Embodiment 1:
The present embodiment provides a kind of by accumulating the method that packing particle is realized from water blockoff in oil-water interfaces, comprising the following steps:
(a) into the fracture hole of pit shaft production section, injection packing particle, the packing particle form stack layer 4 in oil-water interfaces.
A variety of methods injection packing particle into the fracture hole of production section can be taken, for example, method one: in open hole well (i.e. well
Middle production section does not have tripping in completion tubular column) under state, the packing fluid of packing particle is directly carried to production section injection, this method is excellent
Point is easy to operate, and disadvantage is that the consumption for insulating particle is larger, packing particle all effectively can not be filled to seam
In hole.Method two fills the appropriate of tubing string refering to what is shown in Fig. 1, filling tubing string according to pre-prepd log data tripping in first
Position is equipped with the injection valve 2 with fracture hole position consistency, and the two sides of injection valve 2 are equipped with card sealed packer 1, passes through filling tubing string injection
The packing fluid of packing particle is carried, this method advantage is all can effectively be filled to packing particle in fracture hole, and disadvantage exists
In needing log data, operating process needs tripping in and proposes filling tubing string, complex cumbersome.Method three, under
Enter the pit shaft described in step (b) from water plugging string, can directly be injected into the mineshaft annulus between water plugging string and the borehole wall
The packing fluid of packing particle is carried, the advantage and disadvantage of this method are the same as method one.
Preferably, the density (real density rather than bulk density) of the packing particle should be less than 5 density of water flooding and big
In 3 density of in-place oil, for partial size between 16-100 mesh, therefore after the completion of packing fluid injection, packing particle swims in ground naturally
The oil-water interfaces of layer crude oil 3 and water flooding 5, form packer layer 4；The packing fluid is water flooding；The packing of method one or three
Particle injection rate should be greater than pit shaft or annular volume；The packing particle injection rate of method two should be greater than between two packers 1
Mineshaft annulus volume is realized optimal from water plugging effect in order to provide sufficient packing particle.
(b) to pit shaft production section tripping in be equipped with sectioning and blanking plug from water plugging string, the sectioning will give birth to
It produces section and is separated into multiple independent sub- production sections.
Specifically, described be suspended on wellbore casing from water plugging string by hanging packer 7, the sectioning can be with
For the slug for meeting liquid swell packers 8 or injecting glue formation.For meeting liquid swell packers, can be set up directly on from outside water plugging string
Week, the chance liquid swell packers 8 are divided into one or more sons in company with liquid expansion is met from after water plugging string tripping in pit shaft, by pit shaft
Produce section, it is clear that this method has many advantages, such as that structure is simple, operation is convenient.For the slug that injecting glue is formed, can be used with lower section
Method is configured: (s1) treats block section by two packers and carries out card envelope, and rubber injecting valve is housed between two packers；(s2)
Ground connects slush pump, and injecting glue tubing string is lowered into innermost destination layer, then by ground pressure, injects glue to destination layer
Liquid；(s3) injecting glue tubing string is dragged outward, successively to the destination layer injecting glue shallowly located, until completing the setting of all slugs；This method
The slug of setting can obtain better subsection efect.
The length of every height production section, both can targetedly be configured according to log data for fracture hole,
It can also be empirically equidistantly positioned.The reason of being equidistantly positioned is: though there are a fracture hole across
The phenomenon that multiple sub- production sections, then these described multiple sub- production sections can also realize self-styled plugging function.
It should be noted that in the specific implementation process, there is no sequencing relationships by above-mentioned steps (a) and (b).No matter
It is first progress step (a), also or advanced row step (b), effect are identical.
(c) after going into operation, oil-water interfaces are gradually risen, until one or more sons produce section part water breakthrough；When one or more
Height produce section part water breakthrough after, insulate particle under the rolling action of water, plugging hole 66 is blocked, realize son production section from
Water blockoff.
Below in conjunction with attached drawing 2 to 3, further illustrate that this method can be realized the working principle from water blockoff.As shown in Fig. 2,
It is the schematic diagram of a fracture hole type oil well production section completion structure, Jing Zhongyi tripping in is stifled equipped with oneself of sectioning and blanking plug 6
Water pipe column, described to be suspended on wellbore casing from water plugging string by hanging packer 7, the sectioning will produce section and separate
As multiple independent sub- production sections；At the same time, the packing particle in fracture hole forms stack layer in oil-water interfaces.It goes into operation
Afterwards, as the in-place oil 3 in fracture hole is constantly by output, the water level of the water flooding 5 in fracture hole is constantly increased, and is caused between stratum
Packing settled layer 4 between crude oil 3 and water flooding 5 also constantly increases, until water flooding 5 carries packing particle and reaches pit shaft
In.At this point, due to meet 8 packing of liquid swell packers effect (or presence due to slug), water flooding will be closed in one or
In multiple sub- production sections, water flooding will not the production section that is segmented to other of channelling, packing particle can only be carried and enter plugging hole 66,
To from water plugging string internal flow；As shown in figure 3, as water flooding 5 is constantly flowed into from inside water plugging string (such as arrow institute in figure
Refer to be flow of formation water direction), the packing particle being deposited in plugging hole 66 is more and more, until filling up and inciting somebody to action plugging hole 66
Feed pathway is thoroughly closed, to realize the production section from water blockoff function.
Embodiment 2:
The present embodiment provides a kind of tool from water plugging string equipped with sectioning and plugging hole employed in a kind of embodiment 1
Body embodiment, i.e., it is a kind of to realize for accumulating packing particle in oil-water interfaces from water blockoff from water plugging string.
As shown in figure 4, described realize for accumulating packing particle in oil-water interfaces from water blockoff from water plugging string, including set
Have flowing hole 62 from water plugging string ontology 61, intercept net 63 from the front of flowing hole 62 of water plugging string ontology 61 is set,
And the plugging hole 66 in front of intercept net is set；Production liquid in pit shaft can be via plugging hole 66, intercept net 63, flowing hole 62
The feed pathway of composition, into from inside water plugging string ontology 61；The aperture of the intercept net 63 is less than the partial size of packing particle,
For preventing packing particle from entering by flowing hole 62 from inside water plugging string ontology 61；The plugging hole 66 is long and narrow cavity
Structure, the packing particle prevented for accumulating intercepted net 63, to realize the blocking of feed pathway.
Specifically, the flowing hole 62 being used cooperatively, intercept net 63 and plugging hole 66 are defined as one group of blocking device, through excessive
The production section of section apparatus segmentation, can be set one or two or more sets of blocking devices.The sectioning is setting certainly stifled
The circumferential slug for meeting liquid swell packers 8 or injecting glue formation of water tubular column main body 61.
Preferably, the outer jointing jacket 64 of loop overlapping shape is equipped with outside the intercept net.The outer jointing jacket 64 is sealing
Structure, one end are fixed with sealing from water plugging string ontology 61, the other end and are fixed on from the loop overlapping shape on water plugging string ontology 1
The sealing of overcurrent ring 65 is fixed；One or more plugging holes 66 are equipped with inside the overcurrent ring 65；The plugging hole 66, outer jointing jacket
Gap, intercept net 63 and flowing hole 62 between 64 and intercept net 63 collectively form feed pathway, by the pit shaft ring of producing formation
Sky is connected to from inside water plugging string ontology 61.The plugging hole 66 can using be parallel to from the direction in water plugging string axle center into
Row setting can also be arranged along from water plugging string peripheral, oblique, to obtain longer distance, to play preferably blocking effect
Fruit.
The aperture of the intercept net is less than packing grain diameter and matches, can be using around from water plugging string ontology 61 weeks
To mode be arranged, can also be arranged by the way of being fitted in feed pathway side, purpose is to prevent packing particle
Into from inside water plugging string ontology 61.
Embodiment 3:
The present embodiment provides a kind of logical by the one kind, from water plugging string, constructed described in 1 the method for embodiment and embodiment 2
It crosses and accumulates completion structure of the packing particle realization from water blockoff in oil-water interfaces.
As shown in figure 5, the completion structure is constructed by method described in embodiment 1, and after the completion of building, production
The oil-water interfaces of section fracture hole are equipped with including sectioning and block up equipped with the stack layer formed by packing particle, the pit shaft production section
Fill in device from water plugging string, it is described to be suspended on wellbore casing from water plugging string by hanging packer.Described includes segmentation dress
It sets as described in example 2 for accumulating the realization of packing particle from water blockoff in oil-water interfaces with being used from water plugging string for plugging hole 66
From water plugging string.Completion structure described in the present embodiment has the function of from water blockoff.
Embodiment 4:
As shown in fig. 6, the present embodiment provides a practical application of the technical solution of above-described embodiment 1 to 3.
Certain oil well is the adjustment well of 7 in drilling liner cementings, the production of 6 in naked eyes, and it is 300m, drilling well that pit shaft, which produces segment length,
The solution cavity that 3 length of chance are respectively 20m, 20m, 30m long is bored in journey to go into operation later six months if directly complete well is gone into operation, and production liquid is occurred and is contained
The high situation of water rate (compares similar oil well, moisture content is up to 60% or more), it is therefore desirable to carry out water-blocking operation.It is main to implement
Process is as follows:
The first step, according to the drilling well log data of production section, production section is divided into 3 sections by design.Specifically, under fracture hole section both ends
Enter two 6 in and meet liquid swell packers 8, range averaging 100m between two chance liquid swell packers 8 seals solution cavity section
Every；Meeting liquid swell packers two sides is son production section.
Second step is injected the packing fluid containing packing particle into solution cavity and crack by injection string, is actually implanted into envelope
Every particle stacking volume be 1m3(volume is about the annular space volume between two 6 in chance liquid swell packers 8).At this point,
It insulates particle and enters fracture hole under the rolling action of packing fluid, and form packing granulation mass between in-place oil 3 and water flooding 5
Lamination 4.
Third step, tripping in include blanking plug 6,6 in meet liquid swell packers 8 from water plugging string, 7 in suspension envelope is installed
The section is plugged every the local packer particle of device 7, water breakthrough.
4th step, after going into operation again.Since the lifting speed waterborne of different solution cavities is different, packer particle enters difference certainly
The time for producing section is different.After water breakthrough, the water flooding 5 in the fracture hole of first water breakthrough carries the packing of packing settled layer 4
Grain enters water block device 6, long and narrow packing particle blocking section is formed in the plugging hole 66 of water block device 6, to reach from water blockoff
Purpose, and the slower fracture hole of lifting speed waterborne still normally produces.According to actual monitoring, the well first 6 months after going into operation again
It produces liquid moisture content and remains at 20% or less.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, In
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (13)
1. a kind of by accumulating the method that packing particle is realized from water blockoff in oil-water interfaces, it is characterised in that: the following steps are included:
Into the fracture hole of pit shaft production section, injection packing particle, the packing particle form stack layer in oil-water interfaces；
To pit shaft production section tripping in be equipped with sectioning and blanking plug from water plugging string, the sectioning will produce section and separate
As multiple independent sub- production sections；
After operation, oil-water interfaces are gradually risen；If insulating particle taking in water after one or more son production section part water breakthroughs
Under band effect, blanking plug is blocked, realize water exit end in production section from water blockoff.
2. according to claim 1 by accumulating method of the packing particle realization from water blockoff in oil-water interfaces, feature exists
In: the method for the injection packing particle into the fracture hole of pit shaft production section are as follows: for open hole well, directly to pit shaft production section note
Enter to carry the packing fluid of packing particle, packing particle forms stack layer in oil-water interfaces；For being equipped with the pit shaft from water plugging string,
To the packing fluid of the injection carrying packing particle from the corresponding borehole wall fracture hole of water plugging string, packing particle forms heap in oil-water interfaces
Lamination.
3. according to claim 1 by accumulating method of the packing particle realization from water blockoff in oil-water interfaces, feature exists
In: the method for the injection packing particle into the fracture hole of pit shaft production section are as follows:
According to pre-prepd log data, into pit shaft, tripping in fills tubing string, corresponding with fracture hole position on the filling tubing string
Position is equipped with injection valve, and the two sides of the injection valve are equipped with card sealed packer；
The packing fluid of packing particle is carried by filling tubing string injection.
4. according to claim 1 by accumulating method of the packing particle realization from water blockoff in oil-water interfaces, feature exists
In: the sectioning is the slug for meeting liquid swell packers or injecting glue formation.
5. according to claim 4 by accumulating method of the packing particle realization from water blockoff in oil-water interfaces, feature exists
In: the method that slug is formed by injecting glue are as follows:
(s1) card envelope is carried out to block section by card sealed packer, rubber injecting valve 2 is housed between the card sealed packer；
(s2) injecting glue tubing string is lowered into innermost destination layer, injects glue to destination layer；
(s3) injecting glue tubing string is dragged outward, successively to the destination layer injecting glue shallowly located, until completing the setting of all slugs.
6. according to claim 1 by accumulating method of the packing particle realization from water blockoff in oil-water interfaces, feature exists
In: the real density of the packing particle is less than stratum water density and is greater than oil density, and partial size is 16-100 mesh.
7. a kind of realize for accumulating packing particle in oil-water interfaces from water blockoff from water plugging string, it is characterised in that: including setting
Have flowing hole from water plugging string ontology, be arranged in from the intercept net in front of the flowing hole of water plugging string ontology, and setting exists
Plugging hole in front of intercept net；The feed pathway that production liquid in pit shaft can be constituted via plugging hole, intercept net, flowing hole, into
Enter from water plugging string body interior；The aperture of the intercept net is less than the partial size of packing particle, for preventing packing particle from passing through
Flowing hole enters from water plugging string body interior；The plugging hole is long and narrow cavity body structure, is prevented for accumulating intercepted net
Packing particle, to realize the blocking of feed pathway.
8. according to claim 7 realize for accumulating packing particle in oil-water interfaces from water blockoff from water plugging string,
It is characterized in that: described that sectioning is additionally provided with from water plugging string；The sectioning is setting all from water plugging string ontology
To the slug meeting liquid swell packers or injecting glue and being formed.
9. according to claim 7 realize for accumulating packing particle in oil-water interfaces from water blockoff from water plugging string,
Be characterized in that: described from water plugging string is pipe nipple from water plugging string, and two or more pipe nipples between water plugging string from being additionally provided with point
Section apparatus, the sectioning are the tubing string for being circumferentially with the slug for meeting liquid swell packers or injecting glue formation.
10. being realized for accumulating packing particle in oil-water interfaces from stifled according to any claim in claim 7 to 9
Water from water plugging string, it is characterised in that: it is described from water plugging string ontology be equipped with the one or more groups of flowing holes being used cooperatively,
Intercept net and plugging hole.
11. according to claim 10 realize for accumulating packing particle in oil-water interfaces from water blockoff from water plugging string,
It is characterized by: being equipped with the outer jointing jacket of loop overlapping shape outside the intercept net.
12. according to claim 11 realize for accumulating packing particle in oil-water interfaces from water blockoff from water plugging string,
It is characterized by: one end of the outer jointing jacket is fixed with sealing from water plugging string ontology, the other end and it is fixed on from water blockoff pipe
The overcurrent ring of loop overlapping shape on column ontology, which seals, to be fixed；One or more plugging holes are equipped with inside the overcurrent ring；The blocking
Gap, intercept net and flowing hole between hole, outer jointing jacket and intercept net collectively form feed pathway, by mineshaft annulus and certainly stifled
The connection of water pipe column body interior.
13. a kind of by accumulating the completion structure that packing particle is realized from water blockoff in oil-water interfaces, it is characterised in that: the complete well
The oil-water interfaces for producing the fracture hole of section are equipped with the stack layer formed by packing particle, and it includes segmentation dress that the pit shaft production section, which is equipped with,
It sets with blanking plug from water plugging string.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721548.8A CN110424923B (en) | 2019-08-06 | 2019-08-06 | Method for realizing self-plugging of water by accumulating packing particles, self-plugging water pipe column and well completion structure |
| PCT/CN2020/096067 WO2021022909A1 (en) | 2019-08-06 | 2020-06-15 | Method for achieving water self-plugging by means of stacking packer particles, water self-plugging pipe string, and well completion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721548.8A CN110424923B (en) | 2019-08-06 | 2019-08-06 | Method for realizing self-plugging of water by accumulating packing particles, self-plugging water pipe column and well completion structure |
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| Publication Number | Publication Date |
|---|---|
| CN110424923A true CN110424923A (en) | 2019-11-08 |
| CN110424923B CN110424923B (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910721548.8A Active CN110424923B (en) | 2019-08-06 | 2019-08-06 | Method for realizing self-plugging of water by accumulating packing particles, self-plugging water pipe column and well completion structure |
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| CN (1) | CN110424923B (en) |
| WO (1) | WO2021022909A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021022909A1 (en) * | 2019-08-06 | 2021-02-11 | 安东柏林石油科技（北京）有限公司 | Method for achieving water self-plugging by means of stacking packer particles, water self-plugging pipe string, and well completion structure |
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| CN110424923B (en) * | 2019-08-06 | 2021-10-01 | 安东柏林石油科技（北京）有限公司 | Method for realizing self-plugging of water by accumulating packing particles, self-plugging water pipe column and well completion structure |
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| CN110424923B (en) | 2021-10-01 |
| WO2021022909A1 (en) | 2021-02-11 |
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