CN111119787A - Horizontal well stratum anti-channeling water control well completion structure - Google Patents
Horizontal well stratum anti-channeling water control well completion structure Download PDFInfo
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- CN111119787A CN111119787A CN201911192382.1A CN201911192382A CN111119787A CN 111119787 A CN111119787 A CN 111119787A CN 201911192382 A CN201911192382 A CN 201911192382A CN 111119787 A CN111119787 A CN 111119787A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011146 organic particle Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005465 channeling Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 2
- 238000007670 refining Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000003044 adaptive effect Effects 0.000 description 3
- 235000020681 well water Nutrition 0.000 description 3
- 239000002349 well water Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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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
- 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
-
- 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
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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 discloses a horizontal well stratum anti-channeling flow control water well completion structure which comprises a suspension packer, a flow control sieve tube, a blind plug and a selective water control medium, wherein the suspension packer is arranged on the suspension packer; according to the invention, the selective water control medium is filled into the cracks to inhibit the water cone from channeling in the near wellbore area, the selective water control medium is filled between the wellbore and the sieve tube to inhibit the water body from channeling in the wellbore, and the inflow of water is limited by the oil-water selective action of the self-adaptive water device in the flow control sieve tube in the well completion pipe column, so that the effect of refining segmented water control is achieved.
Description
Technical Field
The invention belongs to the technical field of ocean engineering, and particularly relates to a horizontal well stratum anti-channeling flow control water well completion structure.
Background
In the process of oil and gas development, in order to increase the oil drainage area of a production zone, a horizontal well is often adopted for development. Due to reservoir heterogeneity, toe effect, fluid characteristic difference and the like, the horizontal well is prone to water breakthrough early, once a water cone breaks through, the water content will rise rapidly, and the oil field development benefit is seriously affected. (in the original state, massive oil and water or gas and water in the bottom water are distributed according to the gravity relation, after the oil well or gas well is put into operation, the oil-water interface or the gas-water interface in the original horizontal state is changed into a hill-shaped cone due to the influence of the gravity difference of the oil, the water or the gas and the water in the oil and gas layer, namely a water cone, along with the increase of the oil production and the gas speed, the water cone continuously rises to break through and enter the well bottom, so that the oil-water or the gas-water co-production is caused, the oil and the gas yield is reduced, the process that the bottom water is longitudinally pushed along with the oil production and the gas in a cone shape is called the bottom water cone advance, so that the bottom water cone advance is unfavorable for the exploitation of the oil and the gas reservoir.) at present, a well completion structure based on the water control of a water control device in a shaft and the water control material filled in the shaft is adopted in the horizontal well, but the water cone in the near well zone can, the life of the water control process is greatly reduced.
In the earlier work of the applicant, the invention application of 'an adaptive horizontal well water control completion structure' (application date is 2018, 5, 28 and application number is 2018105251095), discloses an adaptive horizontal well water control completion structure, selective water control particles are filled between a horizontal shaft and an annular space of a flow control pipe column in the structure, a filling layer formed by the selective water control particles can form a certain resistance pressure drop to play a role of external pipe sealing, but an axial flow blocking barrier is absent in a stratum close to the shaft, so that when a water cone breaks through, the water cone can spread to other parts to cause water control failure.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a horizontal well stratum anti-channeling water control well completion structure on the basis of the invention application of a self-adaptive horizontal well water control well completion structure (application date is 2018, 5, 28 and application number is 2018105251095) in China worked in the earlier stage of an applicant, increases cracks on the well completion structure in the prior art, achieves the segmented effect through the cracks, and is used for inhibiting the channeling of a water cone in a near well zone.
The invention is realized by the following technical scheme:
a horizontal well stratum anti-channeling flow water control well completion structure comprises a horizontal shaft, a flow control sieve tube, a suspension packer and a blind plug, wherein the flow control sieve tube, the suspension packer and the blind plug form a flow control pipe column together;
a plurality of cracks vertical to the horizontal shaft are formed on the wall of the horizontal shaft, and selective water control media are filled in the annular space and the cracks.
In the technical scheme, the cracks are formed in an artificial fracturing mode, a special fracturing pipe column is put into the special fracturing pipe column string to apply high pressure to the position where the formation flow is required to be choked, the pressure is 1-20 MPa, the corresponding position of the formation is pressed open to form the cracks with the width of 0.01-1 m and the length of 1-20 m, and the cracks are vertically distributed with the plane where the horizontal shaft is located.
In the technical scheme, the horizontal shaft is formed by one of a perforated pipe, a perforated well wall or a light well wall.
In the technical scheme, the selective water control medium has oil-permeable and water-resistant properties; the density of the mixture is 1.2-1.9 g/cm3The self-suspension medium-high density modified ceramsite has the density of 1.0-1.2 g/cm3The low-density modified ceramsite or the low-density modified ceramsite has the density of 0.4-1.0 g/cm3The ultra-low density organic particles of (a); the surface of the selective water control medium has oleophylic and hydrophobic properties, can generate different overflow resistance on oil and water, and has small overflow resistance of oil and large overflow resistance of water, thereby realizing the function of controlling water without controlling oil.
In the technical scheme, the flow control sieve tube is fixedly connected with the suspension packer and the blind plug through threads.
In the technical scheme, the suspension packer forms a seal with the horizontal shaft through a rubber sleeve.
In the technical scheme, the filtering mechanism is sleeved outside the flow control sieve tube.
In the technical scheme, the self-adaptive flow control device is arranged in the flow control sieve tube, so that different flow limiting effects are generated on oil and water production.
The invention has the advantages and beneficial effects that: according to the invention, the selective water control medium is filled into the cracks to inhibit the water cone from channeling in the near wellbore area, the selective water control medium is filled between the wellbore and the sieve tube to inhibit the water body from channeling in the wellbore, and the inflow of water is limited by the oil-water selective action of the self-adaptive water device in the flow control sieve tube in the well completion pipe column, so that the effect of refining segmented water control is achieved.
Drawings
Fig. 1 is a schematic diagram of a horizontal well formation channeling-preventing and flow-controlling water completion structure.
Fig. 2 is a partially enlarged view of the horizontal well formation channeling-preventing flow-controlling water completion structure of the invention.
Reference numeral 1, hanging the packer; 2. a horizontal wellbore; 2-1, cracking; 3. a flow control screen pipe; 3-1, a filtering mechanism; 3-2, adaptive streaming means; 4. a selective water control medium; 5. and (6) blind plugging.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Examples
A horizontal well stratum anti-channeling flow water control well completion structure comprises a horizontal shaft 2, a flow control sieve tube 3, a suspension packer 1 and a blind plug 5, wherein the flow control sieve tube, the suspension packer and the blind plug form a flow control pipe column together, the flow control pipe column is arranged in the horizontal shaft 2 and connected with the horizontal shaft, an annular space is formed between the horizontal shaft and the flow control pipe column, and the flow control sieve tube consists of a filter layer 3-1, a self-adaptive flow valve 3-2 and a base pipe;
a plurality of cracks 2-1 vertical to the horizontal shaft are formed on the wall of the horizontal shaft, and selective water control media 4 are filled in the annular space and the cracks.
Specifically, the horizontal shaft 2 is distributed with cracks 2-1 along the horizontal shaft section in the near wellbore area, the selective water control medium 4 is filled in the cracks 2-1 of the horizontal shaft 2 and between the shaft and the annulus of the flow control sieve tube 3, the selective water control medium 4 has oil-permeable and water-blocking properties, the suspension packer 1 and the horizontal shaft 2 form a seal through a rubber sleeve, a filtering mechanism 3-1 is sleeved outside the flow control sieve tube 3, and a self-adaptive flow device 3-2 is arranged inside the flow control sieve tube 3 and can generate different throttling resistance to oil and water. The self-adaptive flow control device adopts a viscosity sensitive flow control valve (application date is 2016, 4, 18 and application number is 2016102397912) applied by Chinese invention to be matched with a base pipe.
In the well completion process, the horizontal well stratum anti-channeling water control well completion structure (shown in figure 1) is adopted, in the normal exploitation process, the liquid production profile of the horizontal well is unbalanced due to reservoir heterogeneity and oil-water flow rate difference, when formation water enters the horizontal shaft 2, a filtering mechanism in the flow control sieve pipe 3 blocks the selective water control medium 4 outside the flow control sieve pipe 3, and the self-adaptive flow device 3-2 performs self-adaptive adjustment according to the oil-water physical characteristic difference, so that the flow resistance of the water is improved, the flow of crude oil is not inhibited, and the water production of the part is limited. The selective water control medium 4 filled in the annular space of the horizontal shaft 2 and the flow control sieve tube 3 has the functions of selectively penetrating oil and blocking water, can inhibit the axial flow of a water cone in the shaft, does not inhibit the flow of oil, and further ensures the water control effect of the process after the local water outlet. Because of the function of the water control structure, crude oil is better exploited, water is gradually accumulated in a near-wellbore area, at the moment, the water cone tends to spread towards other low-water-content oil extraction areas or non-water oil extraction areas, and the selective water control medium 4 filled in the crack 2-1 forms an annular flow-resisting barrier in a stratum due to the selective oil-permeable and water-blocking functions, so that the axial spread of the water cone in the near-wellbore area is inhibited, and the water flooding of other parts caused by water body circumfluence after local water outlet is delayed, thereby improving the water-control oil-increasing effect and the service life of the water control process to the maximum extent.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (8)
1. The utility model provides a horizontal well stratum anti-channeling accuse water well completion structure which characterized in that: the flow control screen pipe, the suspension packer and the blind plug form a flow control pipe column together, the flow control pipe column is arranged in the horizontal shaft and is connected with the horizontal shaft, an annular space is formed between the horizontal shaft and the flow control pipe column, and the flow control screen pipe consists of a filter layer, a self-adaptive flow valve and a base pipe;
a plurality of cracks vertical to the horizontal shaft are formed on the wall of the horizontal shaft, and selective water control media are filled in the annular space and the cracks.
2. The horizontal well formation anti-channeling water control completion structure according to claim 1, characterized in that: the cracks are formed in an artificial fracturing mode, the width of the cracks ranges from 0.01 m to 1m, the length of the cracks ranges from 1m to 20m, and the cracks are distributed perpendicular to the plane where the horizontal shaft is located.
3. The horizontal well formation anti-channeling water control completion structure according to claim 1, characterized in that: the horizontal shaft is composed of one of a perforated pipe, a perforated well wall or a light well wall.
4. The horizontal well formation anti-channeling water control completion structure according to claim 1, characterized in that: the selective water-controlling medium has oil-permeable and water-blocking properties; the density of the mixture is 1.2-1.9 g/cm3The self-suspension medium-high density modified ceramsite has the density of 1.0-1.2 g/cm3The low-density modified ceramsite or the low-density modified ceramsite has the density of 0.4-1.0 g/cm3One of the ultra-low density organic particles of (1).
5. The horizontal well formation anti-channeling water control completion structure according to claim 1, characterized in that: and the flow control sieve tube is fixedly connected with the suspension packer and the blind plug through threads.
6. The horizontal well formation anti-channeling water control completion structure according to claim 1, characterized in that: the hanging packer forms a seal with the horizontal wellbore through a packing element.
7. The horizontal well formation anti-channeling water control completion structure according to claim 1, characterized in that: and a filtering mechanism is sleeved outside the flow control sieve pipe.
8. The horizontal well formation anti-channeling water control completion structure according to claim 1, characterized in that: and a self-adaptive flow device is arranged in the flow control screen pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192382.1A CN111119787A (en) | 2019-11-28 | 2019-11-28 | Horizontal well stratum anti-channeling water control well completion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192382.1A CN111119787A (en) | 2019-11-28 | 2019-11-28 | Horizontal well stratum anti-channeling water control well completion structure |
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| CN111119787A true CN111119787A (en) | 2020-05-08 |
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| CN201911192382.1A Pending CN111119787A (en) | 2019-11-28 | 2019-11-28 | Horizontal well stratum anti-channeling water control well completion structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080041582A1 (en) * | 2006-08-21 | 2008-02-21 | Geirmund Saetre | Apparatus for controlling the inflow of production fluids from a subterranean well |
| CN201236685Y (en) * | 2008-08-12 | 2009-05-13 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure with flow control function |
| CN101705808A (en) * | 2009-12-11 | 2010-05-12 | 安东石油技术（集团）有限公司 | Sectional flow control method for flow control filter pipe column of oil-gas well with bushing outside channel |
| CN101705802A (en) * | 2009-12-11 | 2010-05-12 | 安东石油技术（集团）有限公司 | Anti-crossflow packing particles for production sections of oil and gas wells |
| CN101705809A (en) * | 2009-12-11 | 2010-05-12 | 安东石油技术（集团）有限公司 | Segmented current controlling method of current controlling filter pipe column of oil-gas well having sand control pipe |
| CN101787854A (en) * | 2010-03-03 | 2010-07-28 | 西南石油大学 | Subsection well completion system of bottom water reservoir horizontal well |
| CN103122760A (en) * | 2013-03-01 | 2013-05-29 | 中国海洋石油总公司 | Completion pipe string for suspending bottom water coning |
| CN105505362A (en) * | 2015-12-02 | 2016-04-20 | 中国石油天然气股份有限公司 | Selective water-blocking, oil-permeable and sand-preventing proppant as well as preparation method and application thereof |
| CN106837262A (en) * | 2017-04-14 | 2017-06-13 | 张兴 | Horizontal well completion tubular pile and horizontal well |
| CN206917640U (en) * | 2017-05-12 | 2018-01-23 | 北京鼐宝隆能源科技有限公司 | The steady oil system of offshore oilfield horizontal well automatic control water |
| CN108060915A (en) * | 2016-11-08 | 2018-05-22 | 安东柏林石油科技（北京）有限公司 | The completion structure of decreasing water cut and increasing oil ability can be improved |
| CN108266173A (en) * | 2018-01-22 | 2018-07-10 | 中国石油化工股份有限公司 | A kind of method for being segmented transformation completion |
| 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 |
| CN108979610A (en) * | 2018-08-07 | 2018-12-11 | 中国石油天然气股份有限公司 | Horizontal well stitches interior fluid diversion control water blocking water development approach, apparatus and system |
| CN109653707A (en) * | 2019-01-29 | 2019-04-19 | 安东柏林石油科技（北京）有限公司 | A kind of fractured reservoirs oil/gas well filling packer particle decreasing water cut and increasing oil method |
-
2019
- 2019-11-28 CN CN201911192382.1A patent/CN111119787A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080041582A1 (en) * | 2006-08-21 | 2008-02-21 | Geirmund Saetre | Apparatus for controlling the inflow of production fluids from a subterranean well |
| CN201236685Y (en) * | 2008-08-12 | 2009-05-13 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure with flow control function |
| CN101705808A (en) * | 2009-12-11 | 2010-05-12 | 安东石油技术（集团）有限公司 | Sectional flow control method for flow control filter pipe column of oil-gas well with bushing outside channel |
| CN101705802A (en) * | 2009-12-11 | 2010-05-12 | 安东石油技术（集团）有限公司 | Anti-crossflow packing particles for production sections of oil and gas wells |
| CN101705809A (en) * | 2009-12-11 | 2010-05-12 | 安东石油技术（集团）有限公司 | Segmented current controlling method of current controlling filter pipe column of oil-gas well having sand control pipe |
| CN101787854A (en) * | 2010-03-03 | 2010-07-28 | 西南石油大学 | Subsection well completion system of bottom water reservoir horizontal well |
| CN103122760A (en) * | 2013-03-01 | 2013-05-29 | 中国海洋石油总公司 | Completion pipe string for suspending bottom water coning |
| CN105505362A (en) * | 2015-12-02 | 2016-04-20 | 中国石油天然气股份有限公司 | Selective water-blocking, oil-permeable and sand-preventing proppant as well as preparation method and application thereof |
| CN108060915A (en) * | 2016-11-08 | 2018-05-22 | 安东柏林石油科技（北京）有限公司 | The completion structure of decreasing water cut and increasing oil ability can be improved |
| CN106837262A (en) * | 2017-04-14 | 2017-06-13 | 张兴 | Horizontal well completion tubular pile and horizontal well |
| CN206917640U (en) * | 2017-05-12 | 2018-01-23 | 北京鼐宝隆能源科技有限公司 | The steady oil system of offshore oilfield horizontal well automatic control water |
| CN108266173A (en) * | 2018-01-22 | 2018-07-10 | 中国石油化工股份有限公司 | A kind of method for being segmented transformation completion |
| 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 |
| CN108979610A (en) * | 2018-08-07 | 2018-12-11 | 中国石油天然气股份有限公司 | Horizontal well stitches interior fluid diversion control water blocking water development approach, apparatus and system |
| CN109653707A (en) * | 2019-01-29 | 2019-04-19 | 安东柏林石油科技（北京）有限公司 | A kind of fractured reservoirs oil/gas well filling packer particle decreasing water cut and increasing oil method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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