CN108533236A - A kind of tubing string that can implement light granules filling and the aquatic production of sand control control - Google Patents
A kind of tubing string that can implement light granules filling and the aquatic production of sand control control Download PDFInfo
- Publication number
- CN108533236A CN108533236A CN201810562380.6A CN201810562380A CN108533236A CN 108533236 A CN108533236 A CN 108533236A CN 201810562380 A CN201810562380 A CN 201810562380A CN 108533236 A CN108533236 A CN 108533236A
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- Prior art keywords
- filling
- control
- sliding sleeve
- tubing string
- fill tool
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- 239000008187 granular material Substances 0.000 title claims abstract description 51
- 239000004576 sand Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 230000003044 adaptive effect Effects 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000012856 packing Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- 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 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
Abstract
The present invention relates to a kind of tubing strings that can implement light granules filling and the aquatic production of sand control control, including filling packer, filling conversion equipment, adaptive tune stream water-control sieve tube and silk plug.When fill tool is inserted into filling conversion equipment and is opened to it, in the fill tool and carries the filling liquids of light granules and will enter the adaptive annular space adjusted and flowed between water-control sieve tube and casing under its guiding, wherein light granules will be filled aforementioned annular space, and filling liquid will penetrate into it is adaptive adjust in stream water-control sieve tube, and under the guiding for filling conversion equipment by between fill tool and filling packer backflow gap by enter in the annular space between fill tool and casing.Light granules can not only be inserted the annular space adaptively adjusted between stream water-control sieve tube and casing by above-mentioned tubing string, solved later stage particle and returned row's difficulty, and effect sand control outstanding, control water can also be realized in later stage oil recovery process, improve the oil recovery efficiency of the tubing string.
Description
Technical field
The invention belongs to petroleum technology fields more particularly to one kind capable of implementing light granules filling and the aquatic production of sand control control
Tubing string.
Background technology
Gravel filling sand prevention technology is one of advanced completion technique, has prominent, sand control life length of sand controlling result etc.
The characteristics of.But existing gravel filling sand prevention technology applies in special oil field, such as system in Tahe Oilfield that there are the following problems:
First, because gravel proportion is larger, so it is extremely difficult in the row of returning in later stage, asked although light granules can theoretically solve this
Topic, but people wouldn't determine that the tubing string of which structure is suitable for carrying out the filling of light granules;Second, it is micro- that grain size is also contained in oil reservoir
The water body of small fine silt and discrete distribution, wherein not only water body can directly be entered by the common screen casing of tubing string in it, shadow
Oil recovery efficiency is rung, and fine silt also is difficult to largely be entered in tubing string by common screen casing (filling out gravel) good barrier, into
One step influences oil recovery efficiency.
Invention content
In order to solve the problems, such as above-mentioned all or part, the object of the present invention is to provide one can implement light granules filling
And the tubing string of the aquatic production of sand control control, light granules can not only be filled into easily it is adaptive adjust stream water-control sieve tube and casing it
Between annular space in, and it is difficult to solve the problems, such as that gravel pack technology in the later stage returns row, and can be borrowed in later stage oil recovery process
The light granules and adaptive adjust for helping filling flow water-control sieve tube realization effect sand control outstanding, control water, to improve adopting for the tubing string
Oily efficiency.
The present invention provides a kind of tubing string that can implement light granules filling and the aquatic production of sand control control, which includes setting
In in casing and sequentially connected filling packer, filling conversion equipment, adaptive adjusting stream water-control sieve tube and silk plug.When filling work
When tool is inserted into filling conversion equipment and opens filling conversion equipment, fill tool is interior and carries the filling liquid of light granules
The adaptive annular space adjusted and flowed between water-control sieve tube and casing will be entered under the guiding of filling conversion equipment, wherein light granules will
To adaptively adjusting the annular space between stream water-control sieve tube and casing to be filled, and filling liquid will penetrate into adaptive tune flow control water sieve
In pipe, and under the guiding for filling conversion equipment by between fill tool and filling packer backflow gap by enter and fill out
It fills in the annular space between tool and casing.
The tubing string that can implement light granules filling and the aquatic production of sand control control of the present invention, can not only be light by light granules
It changes places and is filled into the adaptive annular space adjusted between stream water-control sieve tube and casing, and solve gravel pack technology in the later stage to return row tired
Difficult problem, and water-control sieve tube can be flowed by the light granules of filling and adaptive tune in later stage oil recovery process and realize effect
Fruit sand control outstanding, control water, to improve the oil recovery efficiency of the tubing string.
In addition, the structure of the tubing string that can implement light granules filling and the aquatic production of sand control control of the present invention is simple, manufacture
It is convenient, safe and reliable, popularization and application convenient to carry out.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar reference numeral.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the installation according to the tubing string that can implement light granules filling and the aquatic production of sand control control of the embodiment of the present invention
Schematic diagram;
Fig. 2 is the enlarged drawing at D in Fig. 1;
Fig. 3 is the filling extent obtained by simulation test and stuffing pressure graph of relation;
Fig. 4 is the filling extent obtained by simulation test and filling discharge capacity graph of relation;
Fig. 5 is that the filling extent obtained by simulation test compares graph of relation with filling sand.
Specific implementation mode
The embodiment of technical solution of the present invention is described in detail below in conjunction with attached drawing.Following embodiment is only used for
Clearly illustrate technical scheme of the present invention, therefore be only used as example, and the protection model of the present invention cannot be limited with this
It encloses.
Fig. 1 is the installation according to the tubing string that can implement light granules filling and the aquatic production of sand control control of the embodiment of the present invention
Schematic diagram;Fig. 2 is the enlarged drawing at D in Fig. 1.As depicted in figs. 1 and 2, the light granules that can implement of the embodiment of the present invention are filled out
It fills and the tubing string 100 of the aquatic production of sand control control includes in casing 500 and sequentially connected filling packer 1, filling converting means
It sets 2, adaptive adjust and flows water-control sieve tube 3 and silk plug 4.Preferably, the quantity of adaptive tune stream water-control sieve tube 3 is multiple, and is spaced
It is arranged in opening between filling conversion equipment 2 and silk plug 4.
The tubing string 100 that can implement light granules filling and the aquatic production of sand control control of the embodiment of the present invention is described below in reality
Apply the detailed process of particles filled technique.Specifically, when fill tool 700 be inserted into and open filling conversion equipment 2 when, can
The filling liquid for carrying light granules is injected into fill tool 700 by well head injection device, such as with 4.5~5.0MPa
Pressure and 3.5~4.0m3The discharge capacity of/h injects the filling liquid for carrying light granules into fill tool 700, and described in control
Filling liquid and the volume ratio of light granules are 3~4.5%, and the filling liquid for then carrying light granules will be in filling conversion equipment
Enter the adaptive annular space adjusted and flowed between water-control sieve tube 3 and casing 500 under 2 guiding, wherein light granules will be to adaptively adjusting
Annular space between stream water-control sieve tube 3 and casing 500 is filled, and filling liquid will penetrate into adaptive adjust and flow in water-control sieve tube 3,
And fill conversion equipment 2 guiding under by fill tool 700 and filling packer 1 between backflow gap 701 by enter
In annular space between fill tool 700 and casing 500.Wherein, light granules refer to density no more than 1.5g/cm3 and are insoluble in
The particle of crude oil is ordinarily selected to density is 0.70~1.5g/cm3, grain size is 0.05~1.0mm polyethylene particle or glass
The hollow bead of material.
Applicant under lab by miniature above-mentioned tubing string 100 be arranged into system in Tahe Oilfield simulation model (i.e. with it is true
Each index in oil field is consistent substantially) in be simulated experiment, test result shows:The embodiment of the present invention can implement lightweight
Light granules can not only be filled into adaptive tune flow control water sieve easily by particles filled and the aquatic production of sand control control tubing string 100
In annular space between pipe 3 and casing 500, to solve the problems, such as that it is difficult that the later stage returns row while realizing sand control, and can be
The realization of water-control sieve tube 3 effect sand control outstanding, control water are flowed by the light granules of filling and adaptive adjust in later stage oil recovery process,
The oil recovery efficiency of the tubing string 100 can be increased substantially.
In a preferred embodiment, it is 0.90~1.25g/cm that light granules, which are density,3, grain size be 0.07~
The polyethylene particle of 0.80mm.For the hollow bead of glass material, it is easier to manufacture and cost is lower.In addition, working as
When light granules have roughly the same density with the packing fluid for carrying light granules, light granules can be in packing fluid
Naturally it suspends so that light granules are easier to flow with packing fluid.Consider the factors such as reservoir pressure coefficient, the packing fluid of use
Density usually in 0.90~1.25g/cm3, therefore the density of light granules is also configured as 0.90~1.25g/cm3.The prior art
In, the density of polyethylene particle is generally 0.70~1.5g/cm3, grain size is generally selected in the range of 0.05~1.0mm.By
Many experiments are learnt, when the density of polyethylene particle is 0.90~1.25g/cm3, and grain size is in the range of 0.07~0.80mm
When, not only will not because of light granules grain size it is excessive and influence packing effect, but also will not because of light granules grain size it is too small and
It is set to increase the cost in actual production, the light granules of the present embodiment are and maximum while playing preferable packing effect
Reduce manufacturing cost to limit.
As depicted in figs. 1 and 2, filling conversion equipment 2 includes the base tube 21 that band first fills hole 21a and reflux passage 21b
Be set in base tube 21 and can select the sliding sleeve 22 for being turned on and off the first filling hole 21a, and in base tube 21 and
The resetting spring 23 to lean with sliding sleeve 22.When fill tool 700 is inserted into the base tube 21 of filling conversion equipment 2 and pushes cunning
When covering 22 compression reseting spring 23, sliding sleeve 22 will gradually slide into the first filling of opening from the position for closing the first filling hole 21a
The hole positions 21a (see Fig. 2) make the first filling hole 21a be aligned with the second filling hole 702 on fill tool 700, and allow
In fill tool 700 and the filling liquid of carrying light granules enters after filling hole 21 by the second filling hole 702 and first
The adaptive annular space adjusted between stream water-control sieve tube 3 and casing 500, wherein light granules will be to adaptively adjusting stream 3 He of water-control sieve tube
Annular space between casing 500 is filled, and filling liquid will penetrate into adaptive adjust in stream water-control sieve tube 2, and in reflux passage
Enter under the guiding function of 21b and backflow in gap 701, fill tool 700 and casing are then entered after by gap 701 of backflowing
In annular space between 500, returned in the well head injection device on ground finally by the annular space.When filling complete and from tubing string
When extracting fill tool 700 in 100, sliding sleeve 22 will fill hole 21a's under the action of compression reseting spring 23 from opening first
Position gradually slides into the first filling of closing 21 position of hole, to ensure that the tubing string 100 can swimmingly recover the oil in the later stage.
In the embodiment shown in Figure 2, it is equipped with successively away from the direction of filling packer 1 on the inner wall of base tube 21
First boss 24 and than 24 higher second boss 25 of first boss, sliding sleeve 22 and first fills hole 21a and is set to first boss
Between 24 and second boss 25, resetting spring 23 is set between sliding sleeve 22 and second boss 25.It is convex in first boss 24 and second
Under the synergistic effect of platform 25, sliding sleeve 22 and resetting spring 23 are forced to constrain in 25 the two of first boss 24 and second boss
Between, and ensure that sliding sleeve 22 and resetting spring 23 can safe work.Preferably, when fill tool 700 is inserted into filling converting means
When setting in 2 base tube 21 and pushing 22 compression reseting spring 23 of sliding sleeve, it is convex that the resetting spring 23 is accommodated in base tube 21, second
Platform 25, sliding sleeve 22 and fill tool 700 4 are formed by enclosure space, to prevent filling liquid and light granules from entering closing
The movement of resetting spring 23 is interfered in space.
In the embodiment shown in Figure 2, when sliding sleeve 22 is filled the promotion of tool 700 and opens and is located at the first filling hole 21a
Position when, import and is backflowed then in the outlet of backflowing of reflux passage 21b positioned at the upstream of the setting ball seat 301 of fill tool 700
Positioned at the downstream of the setting ball seat 301, to ensure that filling liquid can swimmingly be led into gap of backflowing by reflux passage 21b
In 701.
In the embodiment shown in Figure 2, it is equipped between sliding sleeve 22 and base tube 21 and is axially spaced apart and can be caught in
The first sealing ring 27 in sliding sleeve 22 and the second sealing ring 28, sliding sleeve can be caught in by being equipped between sliding sleeve 22 and fill tool 700
At least one third sealing ring 29 in 22, wherein when sliding sleeve 22, which is in, closes the first filling hole positions 21a, on sliding sleeve 22
The first sealing ring 27 and the second sealing ring 28 be located at the upstream and downstream of the first filling hole 21a, thereby guarantee that sliding block 22
It can be smooth reciprocal.
In the embodiment shown in Figure 2, tubing string 100 further includes being located between silk plug 4 and adaptive tune stream water-control sieve tube 3
And/or the adaptive centralizer 5 adjusted between stream water-control sieve tube 3.
In view of the physical difference of gravel and light granules, in order to ensure that it is higher that light granules can have in the filling process
(using volume as measurement standard, not lower than 95%), inventor is surveyed in above-mentioned simulation test using unitary variant filling operation
Examination method, it is intended to seek back-up sand than, filling discharge capacity, influence of the filling pressure to filling operation, test result such as Fig. 3~Fig. 5 institutes
Show.According to simulation test procedure and test result it is found that working as back-up sand ratio in 3~4.5%, filling discharge capacity in 3.5~4.0m3/
H, for filling pressure in 4.5~5.0MPa, filling operation is best, is not less than 98%.
In the description of the present application, it is to be understood that term "upper", "lower", "top", "bottom", "outside", " axial direction ", " diameter
To ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of retouching
It states the present invention and simplifies description, do not indicate or imply the indicated device or element must have a particular orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;Can be that machinery connects
It connects, can also be electrical connection;It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Finally it should be noted that:The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that:Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement;And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover in the claim of the present invention and the range of specification.Especially, as long as there is no knots
Structure conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The present invention does not limit to
In specific embodiment disclosed herein, but include all technical solutions fallen within the scope of the appended claims.
Claims (8)
1. a kind of tubing string that can implement light granules filling and the aquatic production of sand control control, which is characterized in that including being set in casing
And sequentially connected filling packer, filling conversion equipment, adaptive tune stream water-control sieve tube and silk plug, when the fill tool is inserted
When entering into the filling conversion equipment and opening the filling conversion equipment, it is injected into the fill tool and carries light
The filling liquid of matter particle will enter adaptive adjust under the guiding of the filling conversion equipment and flow between water-control sieve tube and casing
Annular space, wherein the annular space between the adaptive tune stream water-control sieve tube and casing is filled by the light granules, and institute
Stating filling liquid will penetrate into the adaptive tune stream water-control sieve tube, and by described under the guiding of the filling conversion equipment
Backflowing gap and entering in the annular space between the fill tool and casing between fill tool and filling packer,
In, it is 0.70~1.5g/cm that the light granules, which are selected as density,3, grain size be 0.05~1.0mm polyethylene particle or glass
The hollow bead of material.
2. tubing string according to claim 1, which is characterized in that the filling conversion equipment includes that band first is filled hole and returned
It the base tube of circulation road and is set in the base tube and the sliding sleeve for being turned on and off first filling hole, Yi Jishe can be selected
In the resetting spring to lean in the base tube and with the sliding sleeve, wherein turn when the fill tool is inserted into the filling
In the base tube of changing device and when the sliding sleeve being pushed to compress the resetting spring, the sliding sleeve will fill hole from closing described first
Position gradually slide into and open first filling hole site, make the first filling hole on the fill tool
Second filling hole alignment, and allow in the fill tool and carry the filling liquid of light granules by second filling hole
And first filling hole after enter it is described it is adaptive adjust stream water-control sieve tube and casing between annular space, wherein the reflux passage
It backflows in gap described in the adaptive filling liquid entrance adjusted in stream water-control sieve tube to guide to penetrate into.
3. tubing string according to claim 2, which is characterized in that sealed away from the filling on the inner wall of the base tube
It is equipped with first boss and second boss more higher than the first boss, the sliding sleeve and the first filling hole successively every the direction of device
It is set between the first boss and second boss, the resetting spring is set between the sliding sleeve and second boss.
4. tubing string according to claim 2, which is characterized in that be located at and beat when the sliding sleeve is pushed by the fill tool
When opening the first filling hole site, the outlet of backflowing of the reflux passage is located at the upper of the setting ball seat of the fill tool
Trip, and its import of backflowing is located at the downstream of the setting ball seat.
5. tubing string according to claim 2, which is characterized in that be equipped between the sliding sleeve and base tube and be axially spaced
It opens and can be caught in the first sealing ring in the sliding sleeve and the second sealing ring, energy is equipped between the sliding sleeve and fill tool
At least one third sealing ring being caught in the sliding sleeve, wherein close first filling hole site when the sliding sleeve is in
When, first sealing ring and the second sealing ring are located at the described first upstream and downstream for filling hole.
6. tubing string according to any one of claims 1 to 4, which is characterized in that adjust flow control with adaptive in the silk plug
It is equipped with centralizer between water sieve pipe and/or between the adaptive tune stream water-control sieve tube.
7. tubing string according to any one of claims 1 to 4, which is characterized in that the light granules are that density is 0.90
~1.25g/cm3, grain size be 0.07~0.80mm polyethylene particle.
8. tubing string according to any one of claims 1 to 4, which is characterized in that it is characterized in that, working as the fill tool
When being inserted into the filling conversion equipment and opening the filling conversion equipment, with the pressure of 4.5~5.0MPa and 3.5~
The discharge capacity of 4.0m3/h injects the filling liquid for carrying light granules into the fill tool, and controls the filling liquid and lightweight
The volume ratio of particle is 3~4.5%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810562380.6A CN108533236A (en) | 2018-06-04 | 2018-06-04 | A kind of tubing string that can implement light granules filling and the aquatic production of sand control control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810562380.6A CN108533236A (en) | 2018-06-04 | 2018-06-04 | A kind of tubing string that can implement light granules filling and the aquatic production of sand control control |
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CN201810562380.6A Pending CN108533236A (en) | 2018-06-04 | 2018-06-04 | A kind of tubing string that can implement light granules filling and the aquatic production of sand control control |
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Cited By (4)
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CN110424912A (en) * | 2019-08-06 | 2019-11-08 | 安东柏林石油科技(北京)有限公司 | Method, the row's of returning service unit and the completion structure of tubing string replacement filling layer are not changed |
CN112267855A (en) * | 2020-09-22 | 2021-01-26 | 中国石油天然气股份有限公司 | Flow-regulating water-controlling sand-preventing well completion pipe string and sand filling method |
CN112796715A (en) * | 2021-04-09 | 2021-05-14 | 东营明德石油科技有限公司 | Ternary water-control gas production method suitable for loose sandstone gas reservoir |
CN113236182A (en) * | 2021-06-28 | 2021-08-10 | 安东柏林石油科技(北京)有限公司 | Resistance increasing device and well completion structure for improving axial packing effect of continuous packing body along shaft |
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CN112267855A (en) * | 2020-09-22 | 2021-01-26 | 中国石油天然气股份有限公司 | Flow-regulating water-controlling sand-preventing well completion pipe string and sand filling method |
CN112796715A (en) * | 2021-04-09 | 2021-05-14 | 东营明德石油科技有限公司 | Ternary water-control gas production method suitable for loose sandstone gas reservoir |
CN113236182A (en) * | 2021-06-28 | 2021-08-10 | 安东柏林石油科技(北京)有限公司 | Resistance increasing device and well completion structure for improving axial packing effect of continuous packing body along shaft |
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