CN113494275B - Water control well completion structure for controlling axial channeling by utilizing particle migration - Google Patents
Water control well completion structure for controlling axial channeling by utilizing particle migration Download PDFInfo
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- CN113494275B CN113494275B CN202010193036.1A CN202010193036A CN113494275B CN 113494275 B CN113494275 B CN 113494275B CN 202010193036 A CN202010193036 A CN 202010193036A CN 113494275 B CN113494275 B CN 113494275B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000002245 particle Substances 0.000 title claims abstract description 37
- 238000013508 migration Methods 0.000 title claims abstract description 25
- 230000005012 migration Effects 0.000 title claims abstract description 25
- 230000005465 channeling Effects 0.000 title description 2
- 239000004576 sand Substances 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 34
- 238000012856 packing Methods 0.000 claims description 15
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims 2
- 230000035699 permeability Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- 230000011218 segmentation Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 239000008398 formation water Substances 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Images
Classifications
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- 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
- E21B43/02—Subsoil filtering
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
- E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a water control well completion structure for controlling axial flow by using particle migration, which comprises a sand control pipe column formed by suspending a packer, a screen pipe, a blind pipe and a blind plug, wherein the sand control pipe column is arranged in a horizontal shaft and fixedly connected with the horizontal shaft, an annular space is formed between the sand control pipe column and the horizontal shaft, a gravel filling layer is filled in the annular space, stratum particles flow to the horizontal shaft along with stratum output liquid in the production process, and gradually fill in pores of the gravel filling layer to form the gravel filling layer blocked by stratum particle migration, the screen pipe comprises a screen pipe filtering layer and a screen pipe base pipe, the screen pipe base pipe and the blind pipe are arranged at intervals, and the screen pipe filtering layer is arranged outside the screen pipe base pipe. Stratum migration particles migrate from a production layer to pores of the gravel filling layer along with the production process, so that the permeability of the gravel filling layer is reduced, the effect of limiting axial cross flow is achieved, the fine segmentation of a horizontal shaft is achieved, and the guarantee is provided for the water control effect.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation, in particular to a water control well completion structure for controlling axial cross flow by utilizing particle migration.
Background
In the petroleum and natural gas development process, in order to increase the oil drainage area of a production zone and improve the oil reservoir exploitation efficiency, a horizontal well mode is often adopted for development. Due to the heterogeneity of the reservoir, the water is locally discharged from a certain point or a plurality of points of the horizontal well, and the liquid yield and the water content of the whole well are very high due to the large viscosity difference between crude oil and stratum water. In order to limit the water output, a flow control filter is often installed on the completion string (the flow control filter is a filter capable of controlling the flow rate or switching the flow rate), but the flow control filter can only limit the formation water to radially enter the completion string from the formation, and the formation water can also axially flow along a cavity between the completion string and the horizontal shaft, so that a good water control effect is difficult to achieve.
In order to limit the axial cross flow of formation water, a common method is to segment the horizontal well bore with a packer. Because the packer is high in price and high in installation difficulty, the number of the packers is not too large. Thus, the length of each section of cavity of a horizontal well that is packed with a packer is typically tens or even hundreds of meters. Because each section of cavity is overlong, the physical parameters such as permeability and porosity of stratum in each section of cavity are large in difference, some small sections in each section of cavity are in water outlet, some small sections are in oil outlet, the control of the water flow filter is inconvenient to be further carried out in a sectional manner, and the water control effect is not good. In addition, the packer is easy to fail or damage in use, or the well wall is greatly deformed, so that the packing effect of the packer is also affected.
In order to limit the axial flow of formation water, patent CN101338660 provides another method of filling the annular space between the flow control filter and the horizontal well bore with vitreous hollow particles, wherein the flow of formation fluid in the vitreous hollow particles is seepage, and under a certain production pressure difference, the seepage resistance is larger as the seepage distance is longer, so as to play a role in limiting the axial flow of the annular space in a phase-changing manner. In order to better limit the axial flow of the annulus, the permeability of the hollow particle packing layer needs to be reduced, and for this purpose, hollow particles with small particle size (less than 1000 μm) need to be used, and although the axial flow of the annulus can be better limited, formation fluid can also be influenced to flow into the completion string along the radial direction, so that the initial productivity of the oil well can be influenced. For unconsolidated sandstone formations, particulates within the formation are prone to migration during production, and the migrating particulates can clog the hollow particle pack, further reducing the permeability of the hollow particle pack and further reducing the capacity of the well.
Disclosure of Invention
The invention overcomes the defects in the prior art, and the existing method for limiting the axial cross flow of formation water has the problem of influencing the initial productivity of an oil well, and provides the water control well completion structure for controlling the axial cross flow by utilizing the particle migration.
The aim of the invention is achieved by the following technical scheme.
The utility model provides an utilize particulate migration control axial float's accuse water completion structure, includes horizontal wellbore, hangs packer, screen pipe, blind pipe and blind plug, hang packer, the screen pipe the blind pipe with the blind plug constitutes sand control tubular column jointly, sand control tubular column sets up in the horizontal wellbore and with horizontal wellbore fixed connection sand control tubular column with form an annular space between the horizontal wellbore the annular space intussuseption is filled with gravel packing, and in the production process, stratum particulate flows to horizontal wellbore along with the formation output liquid together to progressively pack in gravel packing's aperture, form the gravel packing after being stopped up by stratum particulate migration, the screen pipe includes screen pipe filter layer and screen pipe base pipe, the screen pipe base pipe with the blind pipe interval sets up the outside of screen pipe base pipe the screen pipe filter layer.
The gravel packing layer blocked by stratum particulate migration is formed by mixing stratum sand or muddy particles which are transferred between a horizontal shaft and a sand prevention tubular column along with the production process in a loose sandstone production layer with the gravel packing layer.
Stratum particulates, i.e., stratum sand or argillaceous particulates in a loose sandstone producing layer that migrate with the production process.
The horizontal shaft comprises a technical sleeve and an open hole well wall, the sand control pipe column is fixedly connected with the technical sleeve through the hanging packer, a gravel filling layer is filled in an annular space formed by the sand control pipe column and the technical sleeve, the screen pipe, the blind pipe and the blind plug are arranged in the open hole well wall, and the annular space formed by the screen pipe, the blind pipe and the open hole well wall is filled with the gravel filling layer after being blocked by stratum particle migration.
And the sand control pipe column is fixedly connected with the suspended packer and the blind plug through threads.
The gravel filling layer is composed of closely packed gravel particles, and the gravel particles adopt quartz sand or manually sintered ceramsite.
And a flow control filter for adaptively adjusting the displacement according to the difference of physical characteristics such as viscosity, density and the like of oil and water is arranged on the screen pipe base pipe.
The beneficial effects of the invention are as follows: the axial crossflow control is carried out by utilizing the particle migration blockage during the production of the loose sandstone stratum, the operation method is simple, and the water control operation cost can be reduced; in the prior art, the annular space between the horizontal shaft and the sand prevention tubular column is filled with the vitreous hollow particles, the particle size of the hollow particles is smaller than 1000um, the early-stage productivity is easily affected due to the smaller particle size, the productivity is also affected in the later stage, the special vitreous hollow particles are large in dosage and high in cost, and the invention adopts quartz sand or manually sintered ceramsite with the particle size required by the conventional sand blocking design, and the initial permeability of the gravel filling layer is higher because the particle size is larger than that of the hollow particles, the productivity is not affected in the initial production stage, the residual permeability of the gravel filling layer is still higher after the gravel filling layer is blocked by stratum sand or argillaceous particles in the production process, and the productivity of an oil well is not greatly affected.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure: 1 is a technical sleeve; 2 is a hanging packer; 3 is a sand control pipe column; 4 is a gravel pack; 5 is a gravel pack after being plugged by the migration of formation particles; 6 is a screen pipe; 6-1 is a screen pipe filter layer; 6-2 is a screen pipe base pipe; 7 is a blind pipe; 8 is a blind plug; and 9 is an open hole wall.
Detailed Description
The technical scheme of the invention is further described by specific examples.
Example 1
The utility model provides a utilize fine particle migration control axial float's accuse water completion structure, including horizontal wellbore, hang the packer 2, screen pipe 6, blind pipe 7 and blind plug 8 constitute sand control tubular column 3 jointly, sand control tubular column 3 sets up in horizontal wellbore and with horizontal wellbore fixed connection, form an annular space between sand control tubular column 3 and horizontal wellbore, it has gravel packing layer 4 to fill in the annular space, in the production process, stratum fine particles flow to horizontal wellbore along with stratum output liquid, and pack gradually in gravel packing layer 4's hole, form gravel packing layer 5 after being stopped up by stratum fine particle migration, screen pipe 6 includes screen pipe filter layer 6-1 and screen pipe base pipe 6-2, screen pipe base pipe 6-2 sets up with blind pipe 7 interval, set up filter layer 6-1 in screen pipe base pipe 6-2's outside.
Example two
On the basis of the first embodiment, the horizontal shaft is composed of a technical casing 1 and an open hole well wall 9, the sand control pipe column 3 is fixedly connected with the technical casing 1 through a hanging packer 2, a gravel packing layer 4 is filled in an annular space formed by the sand control pipe column 3 and the technical casing 1, a screen pipe 6, a blind pipe 7 and a blind plug 8 are arranged in the open hole well wall 9, and a gravel packing layer 5 blocked by stratum particles in a migration is filled in the annular space formed by the screen pipe 6, the blind pipe 7 and the open hole well wall 9.
Example III
On the basis of the second embodiment, the sand control pipe column 3 is fixedly connected with the suspended packer 2 and the blind plug 8 through threads.
The gravel pack 4 is composed of closely packed gravel particles using quartz sand or manually sintered ceramic grains.
A flow control filter for adaptively adjusting the displacement according to the difference of physical characteristics such as viscosity, density and the like of oil and water is installed on the screen base pipe 6-2.
As shown in figure 1, gravel is filled between the sand control pipe column 3 and the open hole well wall 9 to form a gravel filling layer 4, stratum particles flow to a horizontal shaft along with stratum output liquid in a normal exploitation process, and gradually fill in pores of the gravel filling layer 4 to form a gravel filling layer 5 which is blocked by stratum particle migration, because the axial dimension of the horizontal shaft is obviously larger than the radial dimension of the open hole, the axial flow resistance of stratum output liquid is obviously larger than the radial flow resistance of stratum output liquid, namely, the axial flow of stratum output liquid is blocked (the horizontal shaft is divided into a plurality of horizontal shaft segments, the fine segments of the horizontal shaft in an actual production mode are realized), stratum output liquid can only selectively flow from the open hole well wall 9 in a radial direction through the relatively smaller flow resistance to enter the sand control pipe column 3 through the gravel filling layer 5, the screen pipe filtering layer 6-1 and the screen pipe base pipe 6-2, and the water control filter is arranged on the base pipe 6-2, so that the structure can play a role of controlling water, and only the liquid of a local water outlet layer is allowed to flow into the sand control pipe column from the radial direction, the radial flow into the horizontal shaft segments (3), the water outlet liquid flow from the radial direction of the sand control pipe segments is prevented from the radial flow into the sand control pipe segments, the water outlet unit time is reduced, the water outlet level of the water outlet is controlled from the water level of the well is limited, and the water outlet level of the water outlet is controlled from the water level of the water outlet channel is limited at the water outlet level of the water outlet channel is controlled.
The foregoing has described exemplary embodiments of the invention, it being understood that any simple variations, modifications, or other equivalent arrangements which would not unduly obscure the invention may be made by those skilled in the art without departing from the spirit of the invention.
Claims (5)
1. Utilize particulate migration to control accuse water completion structure of axial float, its characterized in that: including horizontal wellbore, suspension packer, screen pipe, blind pipe and blind plug, suspension packer screen pipe the blind pipe with the blind plug constitutes sand control tubular column jointly, sand control tubular column sets up in the horizontal wellbore and with horizontal wellbore fixed connection form an annular space between sand control tubular column with the horizontal wellbore intussuseption is filled with gravel packing layer, and in the production process, stratum particulate flows along with stratum output liquid to horizontal wellbore to progressively pack in the hole of gravel packing layer, form the gravel packing layer after being blocked by stratum particulate migration, the screen pipe includes screen pipe filter layer and screen pipe base pipe, the screen pipe base pipe with the blind pipe interval sets up the outside of screen pipe base pipe sets up the screen pipe filter layer.
2. The water control completion structure utilizing particulate migration to control axial cross flow of claim 1, wherein: the horizontal shaft comprises a technical sleeve and an open hole well wall, the sand control pipe column is fixedly connected with the technical sleeve through the hanging packer, a gravel filling layer is filled in an annular space formed by the sand control pipe column and the technical sleeve, the screen pipe, the blind pipe and the blind plug are arranged in the open hole well wall, and the annular space formed by the screen pipe, the blind pipe and the open hole well wall is filled with the gravel filling layer after being blocked by stratum particle migration.
3. The water control completion structure utilizing particulate migration to control axial cross flow of claim 1, wherein: and the sand control pipe column is fixedly connected with the suspended packer and the blind plug through threads.
4. The water control completion structure utilizing particulate migration to control axial cross flow of claim 1, wherein: the gravel filling layer is composed of closely packed gravel particles, and the gravel particles adopt quartz sand or manually sintered ceramsite.
5. The water control completion structure utilizing particulate migration to control axial cross flow of claim 1, wherein: and a flow control filter is arranged on the sieve tube base tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193036.1A CN113494275B (en) | 2020-03-18 | 2020-03-18 | Water control well completion structure for controlling axial channeling by utilizing particle migration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193036.1A CN113494275B (en) | 2020-03-18 | 2020-03-18 | Water control well completion structure for controlling axial channeling by utilizing particle migration |
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| Publication Number | Publication Date |
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| CN113494275A CN113494275A (en) | 2021-10-12 |
| CN113494275B true CN113494275B (en) | 2023-06-13 |
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| CN114109316A (en) * | 2021-11-04 | 2022-03-01 | 中海石油(中国)有限公司湛江分公司 | Segmented water control device and method applied to high-temperature high-pressure deep water gas reservoir |
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| EA018184B1 (en) * | 2007-10-16 | 2013-06-28 | Эксонмобил Апстрим Рисерч Компани | Flow control system and method for undesired fluid inflow from injection well in production of hydrocarbons |
| CN108729887B (en) * | 2017-04-21 | 2020-10-02 | 中国石油化工股份有限公司 | Sand prevention process for viscous membrane stable gravel packing layer |
| CN108756831A (en) * | 2018-05-28 | 2018-11-06 | 中国海洋石油集团有限公司 | A kind of horizontal well control water completion structure of self-adaptation type |
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