CN113187453A - Washable well sand-prevention water injection process pipe column and implementation method thereof - Google Patents
Washable well sand-prevention water injection process pipe column and implementation method thereof Download PDFInfo
- Publication number
- CN113187453A CN113187453A CN202110741771.6A CN202110741771A CN113187453A CN 113187453 A CN113187453 A CN 113187453A CN 202110741771 A CN202110741771 A CN 202110741771A CN 113187453 A CN113187453 A CN 113187453A
- Authority
- CN
- China
- Prior art keywords
- water injection
- pipe column
- washable
- packer
- sand control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 189
- 238000002347 injection Methods 0.000 title claims abstract description 148
- 239000007924 injection Substances 0.000 title claims abstract description 148
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 93
- 239000011229 interlayer Substances 0.000 claims abstract description 59
- 239000010410 layer Substances 0.000 claims abstract description 55
- 239000004576 sand Substances 0.000 claims abstract description 45
- 238000011001 backwashing Methods 0.000 claims abstract description 30
- 238000002955 isolation Methods 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 25
- 210000000664 rectum Anatomy 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 14
- 239000000725 suspension Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 9
- 229910052755 nonmetal Inorganic materials 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000008398 formation water Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 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
- 238000011084 recovery Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
-
- 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
- E21B33/12—Packers; Plugs
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a washable well sand control water injection process pipe column and an implementation method thereof, relating to the technical field of oil exploitation underground water injection tools, wherein the washable well sand control water injection process pipe column can realize the functions of layered sand control, layered water injection and whole well backwashing, and the key points of the technical scheme are as follows: the water injection pipe column comprises a sand control pipe column and a water injection pipe column, wherein the sand control pipe column is arranged outside the water injection pipe column, four separation layers are longitudinally arranged on the sand control pipe column at intervals, four water injection layers are longitudinally arranged on the water injection pipe column at intervals, and the separation layers comprise a large-drift-diameter particle filter, a large-drift-diameter sealing pipe and an interlayer isolation packer which are sequentially arranged from top to bottom; the water injection layer comprises an intelligent water nozzle regulator and an interlayer washable well module sealing tool which are sequentially arranged from top to bottom.
Description
Technical Field
The invention relates to the technical field of underground water injection tools for oil exploitation, in particular to a washable well sand-prevention water injection process pipe column and an implementation method thereof.
Background
In the middle and later stages of oil field exploitation, water injection is an effective development mode for maintaining formation pressure, realizing stable yield and yield increase of an oil field and improving the recovery ratio of the oil field. At present, many water injection well layers have outstanding contradictions, and a layered water injection technology is required. With the progress of the technology, the intelligent layered regulation water injection technology becomes the mainstream water injection technology at present. However, when the technology is applied to a loose sandstone reservoir, the water injection channel of the water distributor is blocked and the whole process pipe column is blocked due to the serious sand discharge of the reservoir. In order to make the testing and adjusting instrument smoothly put down in place, the water injection pipe column needs to regularly back wash the well.
The conventional zonal injection washable well packer has the problems of short reliable effective period of a well washing valve and small overflowing channel of a well washing, is very easily influenced by stratum back-spitting sand and surface scaling, and cannot realize long-term effective well washing.
In addition, in the conventional layered water injection process technology, the bottom sealing ball seat is very susceptible to sand burying of stratum sand, and meanwhile, stratum water scale, fine silt and the like easily cause sealing failure of the inner sealing ball, so that full well section backwashing cannot be realized. The service life of the water injection pipe column is short, the well repair period is short, and the maintenance cost is high.
In order to solve the problems, a new washable well sand control water injection process pipe column and a method are needed.
Disclosure of Invention
The invention aims to provide a washable well sand control water injection process pipe column and an implementation method thereof.
The technical purpose of the invention is realized by the following technical scheme: a washable well sand control water injection process pipe column comprises a sand control pipe column and a water injection pipe column, wherein the sand control pipe column is arranged outside the water injection pipe column, four separation layers are longitudinally arranged on the sand control pipe column at intervals, and four water injection layers are longitudinally arranged on the water injection pipe column at intervals;
the separation layer comprises a large-drift-diameter particle filter, a large-drift-diameter sealing pipe and an interlayer isolation packer which are sequentially arranged from top to bottom;
the water injection layer comprises an intelligent water nozzle regulator and an interlayer washable well module sealing tool which are sequentially arranged from top to bottom;
the interlayer washable well module sealing tool is of a double-channel structure and is provided with a backwashing connector and a non-return connector, the backwashing module inside the backwashing connector is of a non-metal sealing structure, water injection scaling can be effectively prevented, and the non-return connector can prevent water injection layers from being connected in series due to different interlayer pressures in the water injection process.
Preferentially, the sand control tubular column is last from last to installing in proper order down that the top hangs the packer, the big latus rectum particle filter of 1#, the big latus rectum sealing tube of 1#, separate the packer between 1# layer, the big latus rectum particle filter of 2#, the big latus rectum sealing tube of 2# layer, separate the packer between 2# layer, the big latus rectum particle filter of 3# layer, the big latus rectum sealing tube of 3# layer, separate the packer between 3# layer, the big latus rectum particle filter of 4# layer, the big latus rectum sealing tube of 4# bottom packer assembly, the blind pipe is sealed and the plug, wherein, the lower extreme screw-thread fit of sand control tubular column has the plug.
Preferentially, install the sealed instrument of top washable well module, 1# intelligent water injection well choke regulator, the sealed instrument of washable well module between 1# layer, 2# intelligent water injection well choke regulator, the sealed instrument of washable well module between 2# layer, 3# intelligent water injection well choke regulator, the sealed instrument of washable well module between 3# layer, 4# intelligent water injection well choke regulator, the sealed instrument of washable well module between 4# layer and opening guide shoe on the water injection tubular column from last down in proper order, wherein, the sealed instrument of top washable well module is located the top that the packer was hung at the top.
Preferentially, the apopore of intelligence water injection well choke regulator is adjustable structure, is connected with special measure and regulate equipment and can realizes the limit and survey the limit and transfer to be equipped with and prevent returning and tell the structure, formation water flows back the well head through the water injection hole when can preventing to stop annotating.
Preferably, the separation layer and the water injection layer are arranged in one-to-one correspondence.
Preferentially, the sealed instrument of top washable well module is the binary channels structure, and has backwash joint and non return joint, the inside backwash module of backwash joint is nonmetal seal structure, can effectively prevent the water injection scale deposit, the non return joint can prevent that each water injection layer from bunching the layer because of the difference of interlaminar pressure in the water injection in-process, the sealed instrument of top washable well module has the location joint, can realize hanging the butt joint location of packer with the top, can realize the location of going into the in-process under the tubular column, can realize again the water injection in-process tubular column anticreep of pushing up, suppress by the oil jacket annular space during the backwash well, the double-layered wall passageway through the sealed module of washable well realizes the backwash well.
A method for realizing a washable well sand control water injection process pipe column comprises the following steps:
s1: after the connection sand control pipe column is put down in place, a setting top suspension packer is pressed through a pipeline, after the setting of the top suspension packer is finished, an oil sleeve annulus is pressed to test the setting top suspension packer, the setting service pipe column and the sand control pipe column are released, the setting service pipe column is lifted to a specified position after the release, a setting 1# interlayer isolation packer, a 2# interlayer isolation packer, a 3# interlayer isolation packer and a 4# bottom packer assembly are respectively pressed, after the setting is finished, the setting service pipe column is continuously lifted and put down to the specified position to test the setting of the interlayer isolation packer, and the setting service pipe column is lifted out after the setting is finished;
s2: connecting a water injection pipe column to lower down, and positioning a top washable well module sealing tool positioning joint and a top hanging packer to realize the hanging positioning of the water injection pipe column;
s3: the method comprises the following steps of (1) putting a special measuring and regulating instrument for the intelligent water nozzle regulator into the intelligent water nozzle regulator at the lowest layer through an oil pipe, monitoring the pressure of each water layer according to a flow meter in the measuring and regulating instrument, regulating the water nozzle opening of the intelligent water nozzle regulator, realizing measuring and regulating while measuring, then continuously lifting the intelligent water nozzle regulator to the upper layers of intelligent water nozzle regulators for continuous measuring and regulating, realizing the water nozzle opening of all the intelligent water nozzle regulators by the aid of the lifting instrument when the measuring and regulating is finished, lifting the measuring and regulating instrument after the measuring and regulating is finished, starting test injection, constantly detecting the dry pressure of the oil pipe and the pressure of an oil sleeve through wellhead equipment, and starting water injection after the test injection is finished;
s4: after a water injection period is finished, the sealing performance and the anti-backflow performance of the water injection pipe column can be checked by stopping water injection and detecting the annular pressure of the oil pipe and the oil sleeve, and after the water injection is stopped, the connecting pipeline is pressed through the annular pressure of the oil sleeve to open a backwashing channel to realize backwashing;
s5: after the reverse well washing is finished, the oil pipe is pressed to close a well washing channel, the annular pressure of the oil sleeve is detected through wellhead equipment, the annular pressure is not provided or is not provided, then an annular wellhead valve of the oil sleeve is closed, and water injection is started through the water injection pipe column again.
Preferentially, in S2, the water injection string can be tested for sealing performance by direct tubing pressure, wherein the bottom sealing can be realized by the combination of a No. 4 bottom packer assembly, a blind pipe seal, a plug, an interlayer washable well module sealing tool and an opening guide shoe tool.
Preferably, in S5, the detection process enables backwashing construction work to be performed multiple times, and long-time water injection is achieved.
In conclusion, the invention has the following beneficial effects:
1. the top washable well module sealing tool, the interlayer washable well module sealing tool, the intelligent water nozzle regulator and the like provided by the invention are all provided with anti-backflow structures, so that the phenomenon that water injection layers are connected in series due to different interlayer pressures can be effectively prevented; tools such as a sealing ball seat and the like are eliminated, and the function of the sealing ball seat is replaced by the matching use of the interlayer washable well module sealing tool and tools such as a large-drift-diameter sealing pipe, a blind pipe seal and a plug, so that the construction operation risk is reduced;
2. backwash modules such as top washable well module sealing tool, interlayer washable well module sealing tool are nonmetal seals, can effectively prevent the problem that scale blockage backwash channel well flushing is not feasible that long-time water injection produced, have prolonged the life of water injection tubular column greatly. The mode of combining the sealing module with the large-drift-diameter sealing pipe is adopted, repeated setting and unsetting of the water injection packer are not needed, the interlayer sealing performance can be greatly protected, the service life of the water injection pipe column is prolonged, and the sealing reliability is improved;
3. the risk of sand blocking is greatly reduced, and the service cycle of the water injection pipe column is prolonged; the water injection string is an independent string, and can be taken out independently in the later period of water injection operation, so that the time and cost of the well repair operation of the water injection well can be greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of the present embodiment.
Reference numerals:
1. a top suspension packer; 2. 1# large-bore particulate filter; 3. 1# large-diameter sealing tube; 4. 1# interlayer isolation packer; 5. 2# large-bore particle filter; 6. 2# large-bore sealing tube; 7. 2# interlayer isolation packer; 8. 3# Large bore particulate Filter; 9. 3# interlayer isolation packer; 10. 3# large-bore sealing tube; 11. 4# Large bore particulate filter; 12. 4# large-bore sealing tube; 13. 4# bottom packer assembly; 14. sealing the blind pipe; 15. plugging with a thread; 16. a top washable well module sealing tool; 17. 1# Intelligent Water nozzle regulator; 18. 1# interlayer washable well module sealing tool; 19. 2# Intelligent Water nozzle regulator; 20. 2# interlayer washable well module sealing tool; 21. 3# Intelligent Water nozzle regulator; 22. a No. 3 interlayer washable well module sealing tool; 23. 4# Intelligent Water nozzle regulator; 24. 4# interlayer washable well module sealing tool; 25. opening guide shoes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a washable well sand control water injection process pipe column comprises a sand control pipe column and a water injection pipe column, wherein the sand control pipe column is arranged outside the water injection pipe column, four separation layers are longitudinally arranged on the sand control pipe column at intervals, four water injection layers are longitudinally arranged on the water injection pipe column at intervals, and each separation layer comprises a large-drift-diameter particle filter, a large-drift-diameter sealing pipe and an interlayer isolation packer which are sequentially arranged from top to bottom; the water injection layer comprises an intelligent water nozzle regulator and an interlayer washable well module sealing tool which are sequentially arranged from top to bottom.
In one embodiment of the present invention, as shown in fig. 1, a sand control string is sequentially provided with a top suspension packer 1, a 1# large-drift-diameter particle filter 2, a 1# large-drift-diameter sealing pipe 3, a 1# interlayer isolation packer 4, a 2# large-drift-diameter particle filter 5, a 2# large-drift-diameter sealing pipe 6, a 2# interlayer isolation packer 7, a 3# large-drift-diameter particle filter 8, a 3# large-drift-diameter sealing pipe 9, a 3# interlayer isolation packer 10, a 4# large-drift-diameter particle filter 11, a 4# large-drift-diameter sealing pipe 12, a 4# bottom packer assembly 13, a blind pipe seal 14 and a plug 15 from top to bottom, wherein the lower end of the sand control string is threadedly fitted with the plug 15.
In a specific embodiment of the present invention, as shown in fig. 1, a top washable well module sealing tool 16, a # 1 intelligent water nozzle regulator 17, a # 1 interlayer washable well module sealing tool 18, a # 2 intelligent water nozzle regulator 19, a # 2 interlayer washable well module sealing tool 20, a # 3 intelligent water nozzle regulator 21, a # 3 interlayer washable well module sealing tool 22, a # 4 intelligent water nozzle regulator 23, a # 4 interlayer washable well module sealing tool 24 and an opening guide shoe 25 are sequentially installed on a water injection string from top to bottom, wherein the top washable well module sealing tool 16 is located above a top suspension packer 1.
In a specific embodiment of the invention, the water outlet hole of the intelligent water nozzle regulator is of an adjustable structure, is connected with special measuring and regulating equipment to realize measurement and regulation at the same time, and is provided with a backflow preventing structure to prevent formation water from flowing backwards to a wellhead through the water injection hole when the injection is stopped.
In one embodiment of the present invention, the separation layers are disposed in one-to-one correspondence with the water injection layers.
In a specific embodiment of the invention, as shown in fig. 1, the top washable well module sealing tool 16 is a dual-channel structure and is provided with a backwashing connector and a non-return connector, the backwashing module in the backwashing connector is a non-metal sealing structure and can effectively prevent water injection and scaling, the non-return connector can prevent each water injection layer from being layered due to different interlayer pressures in the water injection process, the top washable well module sealing tool 16 is provided with a positioning connector and can realize abutting positioning with the top suspension packer 1, positioning in the running process of a pipe column and anti-creeping of the top of the pipe column in the water injection process, the oil sleeve annulus is used for pressurizing in the backwashing process, and backwashing is realized through a wall-clamping channel of the washable well module.
In a specific embodiment of the invention, the interlayer washable well module sealing tool is of a double-channel structure and is provided with a backwashing connector and a non-return connector, the backwashing module in the backwashing connector is of a non-metal sealing structure, so that water injection scaling can be effectively prevented, and the non-return connector can prevent each water injection layer from bunching due to different interlayer pressures in the water injection process.
As shown in figure 1, the implementation method of the washable well sand control water injection process pipe column comprises the following steps:
s1: after the connection sand control pipe column is put down in place, a setting top hanging packer 1 is pressed through a pipeline, after the setting of the top hanging packer 1 is finished, an oil sleeve annulus is pressed to test the setting top hanging packer 1, the setting service pipe column and the sand control pipe column are released, the setting service pipe column is lifted up to a specified position after the releasing, a setting 1# interlayer isolation packer 4, a 2# interlayer isolation packer 7, a 3# interlayer isolation packer 10 and a 4# bottom packer assembly 13 are respectively pressed, after the setting is finished, the setting service pipe column is continuously lifted up and put down to the specified position to test the setting of the interlayer isolation packer, and after the setting is finished, the setting service pipe column is lifted out;
s2: connecting a water injection pipe column to be lowered, and positioning a positioning joint of a top washable well module sealing tool 16 and a top suspension packer 1 to realize suspension positioning of the water injection pipe column;
s3: the method comprises the following steps of (1) putting a special measuring and regulating instrument for the intelligent water nozzle regulator into the intelligent water nozzle regulator at the lowest layer through an oil pipe, monitoring the pressure of each water layer according to a flow meter in the measuring and regulating instrument, regulating the water nozzle opening of the intelligent water nozzle regulator, realizing measuring and regulating while measuring, then continuously lifting the intelligent water nozzle regulator to the upper layers of intelligent water nozzle regulators for continuous measuring and regulating, realizing the water nozzle opening of all the intelligent water nozzle regulators by the aid of the lifting instrument when the measuring and regulating is finished, lifting the measuring and regulating instrument after the measuring and regulating is finished, starting test injection, constantly detecting the dry pressure of the oil pipe and the pressure of an oil sleeve through wellhead equipment, and starting water injection after the test injection is finished;
s4: after a water injection period is finished, the sealing performance and the anti-backflow performance of the water injection pipe column can be checked by stopping water injection and detecting the annular pressure of the oil pipe and the oil sleeve, and after the water injection is stopped, the connecting pipeline is pressed through the annular pressure of the oil sleeve to open a backwashing channel to realize backwashing;
s5: after the reverse well washing is finished, the oil pipe is pressed to close a well washing channel, the annular pressure of the oil sleeve is detected through wellhead equipment, the annular pressure is not provided or is not provided, then an annular wellhead valve of the oil sleeve is closed, and water injection is started through the water injection pipe column again.
In one embodiment of the invention, in S2, the water injection string can be tested for sealing performance by direct tubing pressure, wherein the bottom sealing can be realized by the combination of the # 4 bottom packer assembly 13, the blind pipe seal 14, the plug 15, the interlayer cleanout module sealing tool and the open guide shoe 25 tool.
In one embodiment of the present invention, in S5, the detection process can be performed by backwashing for a plurality of times, thereby realizing long-time water injection.
In conclusion, the invention has the following beneficial effects:
1. the top washable well module sealing tool, the interlayer washable well module sealing tool, the intelligent water nozzle regulator and the like provided by the invention are all provided with anti-backflow structures, so that the phenomenon that water injection layers are connected in series due to different interlayer pressures can be effectively prevented; tools such as a sealing ball seat and the like are eliminated, and the function of the sealing ball seat is replaced by the matching use of the interlayer washable well module sealing tool and tools such as a large-drift-diameter sealing pipe, a blind pipe seal and a plug, so that the construction operation risk is reduced;
2. backwash modules such as top washable well module sealing tool, interlayer washable well module sealing tool are nonmetal seals, can effectively prevent the problem that scale blockage backwash channel well flushing is not feasible that long-time water injection produced, have prolonged the life of water injection tubular column greatly. The mode of combining the sealing module with the large-drift-diameter sealing pipe is adopted, repeated setting and unsetting of the water injection packer are not needed, the interlayer sealing performance can be greatly protected, the service life of the water injection pipe column is prolonged, and the sealing reliability is improved;
3. the risk of sand blocking is greatly reduced, and the service cycle of the water injection pipe column is prolonged; the water injection string is an independent string, and can be taken out independently in the later period of water injection operation, so that the time and cost of the well repair operation of the water injection well can be greatly reduced.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. A washable well sand control water injection process pipe column comprises a sand control pipe column and a water injection pipe column, wherein the sand control pipe column is arranged outside the water injection pipe column, four separation layers are longitudinally arranged on the sand control pipe column at intervals, and four water injection layers are longitudinally arranged on the water injection pipe column at intervals; the separation layer comprises a large-drift-diameter particle filter, a large-drift-diameter sealing pipe and an interlayer isolation packer which are sequentially arranged from top to bottom; the method is characterized in that:
the water injection layer comprises an intelligent water nozzle regulator and an interlayer washable well module sealing tool which are sequentially arranged from top to bottom;
the interlayer washable well module sealing tool is of a double-channel structure and is provided with a backwashing connector and a non-return connector, the backwashing module inside the backwashing connector is of a non-metal sealing structure, water injection scaling can be effectively prevented, and the non-return connector can prevent water injection layers from being connected in series due to different interlayer pressures in the water injection process.
2. The washable sand control water injection process pipe string of claim 1, which is characterized in that: the packer is hung on the top of the sand control tubular column from top to bottom, and the packer is hung on the big latus rectum of 1# (1), big latus rectum of 1# (2), big latus rectum of 1# (3), keep apart packer (4) between the layer of 1#, big latus rectum of 2# (5), big latus rectum of 2# (6), keep apart packer (7) between the layer of 2# (7), big latus rectum of 3# (8), big latus rectum of 3# (9), keep apart packer (10) between the layer of 3# (10), big latus rectum of 4# (11), big latus rectum of 4# (12), 4# bottom packer assembly (13), blind pipe seal (14) and plug (15), wherein, the lower extreme screw-thread fit of sand control tubular column has plug (15).
3. The washable sand control water injection process pipe string of claim 1, which is characterized in that: the water injection pipe column is provided with a top washable well module sealing tool (16), a 1# intelligent water nozzle regulator (17), a 1# interlayer washable well module sealing tool (18), a 2# intelligent water nozzle regulator (19), a 2# interlayer washable well module sealing tool (20), a 3# intelligent water nozzle regulator (21), a 3# interlayer washable well module sealing tool (22), a 4# intelligent water nozzle regulator (23), a 4# interlayer washable well module sealing tool (24) and an opening guide shoe (25) from top to bottom in sequence, wherein the top washable well module sealing tool (16) is positioned above the top suspension packer (1).
4. The washable sand control water injection process string as recited in claim 3, characterized in that: the top washable well module sealing tool (16) is a double-channel structure, and has a backwashing connector and a non-return connector, the backwashing module inside the backwashing connector is a non-metal sealing structure, water injection scaling can be effectively prevented, the non-return connector can prevent each water injection layer from bunching due to different interlayer pressures in the water injection process, the top washable well module sealing tool (16) has a positioning connector, the butt joint positioning of a suspended packer (1) with the top can be realized, the positioning in the process of descending a pipe column can be realized, the anti-creeping of the top of the pipe column in the water injection process can be realized, the pressure is pressed by an oil sleeve annulus during backwashing, and backwashing is realized through a wall clamping channel of the washable well sealing module.
5. The washable sand control water injection process pipe string of claim 1, which is characterized in that: the apopore of intelligence water injection well choke regulator is adjustable structure, is connected with special measure and regulate equipment and can realizes the limit and survey the limit and transfer to be equipped with and prevent returning and tell the structure, formation water flows back through the water injection hole and flows back the well head when can preventing to stop annotating.
6. The washable sand control water injection process pipe string of claim 1, which is characterized in that: the separation layers and the water injection layers are arranged in a one-to-one correspondence mode.
7. A method for realizing the washable sand-control water injection process pipe column of any one of claims 1 to 6, which is characterized in that: the method comprises the following steps:
s1: after the connection sand control pipe column is put in place, a setting top hanging packer (1) is pressed through a pipeline, after the setting of the top hanging packer (1) is finished, an oil sleeve annulus is pressed to test the setting top hanging packer (1), the setting service pipe column and the sand control pipe column are released, the setting service pipe column is lifted up to a specified position after the releasing, a setting 1# interlayer isolation packer (4), a 2# interlayer isolation packer (7), a 3# interlayer isolation packer (10) and a 4# bottom packer assembly (13) are respectively pressed, after the setting is finished, the setting service pipe column is continuously lifted up and put down to the specified position to realize the seal test of the interlayer isolation packer, and after the seal test is finished, the setting service pipe column is lifted out;
s2: connecting a water injection pipe column to lower down, and positioning a positioning joint of a top washable well module sealing tool (16) and a top suspension packer (1) to realize suspension positioning of the water injection pipe column;
s3: the method comprises the following steps of (1) putting a special measuring and regulating instrument for the intelligent water nozzle regulator into the intelligent water nozzle regulator at the lowest layer through an oil pipe, monitoring the pressure of each water layer according to a flow meter in the measuring and regulating instrument, regulating the water nozzle opening of the intelligent water nozzle regulator, realizing measuring and regulating while measuring, then continuously lifting the intelligent water nozzle regulator to the upper layers of intelligent water nozzle regulators for continuous measuring and regulating, realizing the water nozzle opening of all the intelligent water nozzle regulators by the aid of the lifting instrument when the measuring and regulating is finished, lifting the measuring and regulating instrument after the measuring and regulating is finished, starting test injection, constantly detecting the dry pressure of the oil pipe and the pressure of an oil sleeve through wellhead equipment, and starting water injection after the test injection is finished;
s4: after a water injection period is finished, the sealing performance and the anti-backflow performance of the water injection pipe column can be checked by stopping water injection and detecting the annular pressure of the oil pipe and the oil sleeve, and after the water injection is stopped, the connecting pipeline is pressed through the annular pressure of the oil sleeve to open a backwashing channel to realize backwashing;
s5: after the reverse well washing is finished, the oil pipe is pressed to close a well washing channel, the annular pressure of the oil sleeve is detected through wellhead equipment, the annular pressure is not provided or is not provided, then an annular wellhead valve of the oil sleeve is closed, and water injection is started through the water injection pipe column again.
8. The method for realizing the washable sand-control water injection process pipe column as claimed in claim 7, is characterized in that: in S2, the water injection string can be directly tested for sealing performance by pressing the oil pipe, wherein the bottom sealing can be realized by the 4# bottom packer assembly (13), the blind pipe seal (14), the plug (15), the interlayer flushing module sealing tool and the opening guide shoe (25) tool.
9. The method for realizing the washable sand-control water injection process pipe column as claimed in claim 7, is characterized in that: in the S5, backwashing construction operation can be carried out for multiple times in the detection process, and long-time water injection is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741771.6A CN113187453B (en) | 2021-07-01 | 2021-07-01 | Washable well sand-prevention water injection process pipe column and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741771.6A CN113187453B (en) | 2021-07-01 | 2021-07-01 | Washable well sand-prevention water injection process pipe column and implementation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113187453A true CN113187453A (en) | 2021-07-30 |
| CN113187453B CN113187453B (en) | 2021-10-15 |
Family
ID=76976860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110741771.6A Active CN113187453B (en) | 2021-07-01 | 2021-07-01 | Washable well sand-prevention water injection process pipe column and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113187453B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003506603A (en) * | 1999-08-05 | 2003-02-18 | シドラ コーポレイション | Equipment to optimize multiphase fluid production |
| CN101109376A (en) * | 2007-08-20 | 2008-01-23 | 大庆油田有限责任公司 | Chemical composite driving antiscaling soft plunger oil pump |
| CN203769743U (en) * | 2014-04-04 | 2014-08-13 | 托普威尔石油技术股份公司 | Hollow adjustable underground water distributor |
| CN204419141U (en) * | 2015-01-06 | 2015-06-24 | 青岛瑞信石油设备制造有限公司 | A kind of selective sand control is surveyed and is adjusted one separate layer water injection string |
| RU2015106202A (en) * | 2015-02-24 | 2015-07-27 | Олег Сергеевич Николаев | SOFTWARE DRIVEN WELL |
| CN105507861A (en) * | 2016-01-06 | 2016-04-20 | 李永立 | Tubular column for separated layer water injection |
| CN106988712A (en) * | 2017-06-09 | 2017-07-28 | 上海飞舟博源石油装备技术有限公司 | Single tube post multitube separated-zone water infection oil field device and its water filling and anti-flushing well method |
| CN108894761A (en) * | 2018-08-06 | 2018-11-27 | 中国海洋石油集团有限公司 | A kind of one-trip string seperated layer water injection sand control back washing device and method |
| CN110593783A (en) * | 2019-10-16 | 2019-12-20 | 天津凯雷油田技术有限公司 | Interlayer backwashing sealing pipe, top backwashing sealing pipe and water injection pipe column |
| CN111005703A (en) * | 2018-10-08 | 2020-04-14 | 中国石油化工股份有限公司 | Offshore oilfield separate-layer sand prevention separate-layer water injection integrated tubular column and method |
-
2021
- 2021-07-01 CN CN202110741771.6A patent/CN113187453B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003506603A (en) * | 1999-08-05 | 2003-02-18 | シドラ コーポレイション | Equipment to optimize multiphase fluid production |
| CN101109376A (en) * | 2007-08-20 | 2008-01-23 | 大庆油田有限责任公司 | Chemical composite driving antiscaling soft plunger oil pump |
| CN203769743U (en) * | 2014-04-04 | 2014-08-13 | 托普威尔石油技术股份公司 | Hollow adjustable underground water distributor |
| CN204419141U (en) * | 2015-01-06 | 2015-06-24 | 青岛瑞信石油设备制造有限公司 | A kind of selective sand control is surveyed and is adjusted one separate layer water injection string |
| RU2015106202A (en) * | 2015-02-24 | 2015-07-27 | Олег Сергеевич Николаев | SOFTWARE DRIVEN WELL |
| CN105507861A (en) * | 2016-01-06 | 2016-04-20 | 李永立 | Tubular column for separated layer water injection |
| CN106988712A (en) * | 2017-06-09 | 2017-07-28 | 上海飞舟博源石油装备技术有限公司 | Single tube post multitube separated-zone water infection oil field device and its water filling and anti-flushing well method |
| CN108894761A (en) * | 2018-08-06 | 2018-11-27 | 中国海洋石油集团有限公司 | A kind of one-trip string seperated layer water injection sand control back washing device and method |
| CN111005703A (en) * | 2018-10-08 | 2020-04-14 | 中国石油化工股份有限公司 | Offshore oilfield separate-layer sand prevention separate-layer water injection integrated tubular column and method |
| CN110593783A (en) * | 2019-10-16 | 2019-12-20 | 天津凯雷油田技术有限公司 | Interlayer backwashing sealing pipe, top backwashing sealing pipe and water injection pipe column |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113187453B (en) | 2021-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9022110B2 (en) | Segmental flow-control method for flow-control filter string in oil-gas well and oil-gas well structure | |
| RU2495235C1 (en) | Method and device for controlled pumping down to formations | |
| CN104141477B (en) | Concentric three-tube separated layer water injection device and using method thereof | |
| WO2021022908A1 (en) | Method for replacing filling layer without changing pipe string, flowback service device and well completion structure | |
| US20120241168A1 (en) | Method and system for segmental flow control in oil-gas well | |
| CN110195578B (en) | Separate layer water injection system of small cased well | |
| CN106988712A (en) | Single tube post multitube separated-zone water infection oil field device and its water filling and anti-flushing well method | |
| CN102791956A (en) | Valve system | |
| CN110671080A (en) | Filling tool assembly, self-adaptive water screen pipe string and experimental method | |
| CN110939402A (en) | Jet pump tubular column with intubate bridging plug | |
| CN107542411A (en) | A kind of multi-channel tube and the method using its progress seperated layer water injection | |
| CN108442916B (en) | Open hole screen pipe damage detection tubular column for horizontal well | |
| CN113187453B (en) | Washable well sand-prevention water injection process pipe column and implementation method thereof | |
| CN112943157B (en) | Ball-throwing type leaking stoppage bypass valve for well drilling | |
| CN206830131U (en) | Sand setting constant pressure check valve for water injection well | |
| CN105696987A (en) | Water distributor for casing patching well | |
| CN114856495B (en) | Underground device for testing gas water production profile of coal bed gas combined well | |
| CN205532532U (en) | Water injection mandrel that casing patching well was used | |
| CN211397536U (en) | Jet pump tubular column with intubate bridging plug | |
| CN204024615U (en) | Concentric three pipe layered water fillers | |
| CN202745840U (en) | High-efficiency separate injection pipe column for highly-deviated well | |
| CN108691511B (en) | Packing upper-layer and lower-layer integrated sand prevention pipe column and method | |
| CN213016279U (en) | Casing damage well fast recovery production pipe column | |
| CN215595555U (en) | One-trip pipe column clamping, sealing and filling integrated device | |
| CN112593894B (en) | Multi-purpose multi-stage discontinuous well cementation method for preventing pollution of production layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhong Fuwei Inventor after: Yu Xuying Inventor after: Wang Jinbo Inventor after: Li Fuhe Inventor after: Ding Kai Inventor before: Tang Shukai Inventor before: Zhong Fuwei Inventor before: Yu Xuying Inventor before: Wang Jinbo Inventor before: Li Fuhe Inventor before: Ding Kai |