CN114165207A - Wireless radio frequency control dragging type perforation-fracturing integrated process pipe column - Google Patents
Wireless radio frequency control dragging type perforation-fracturing integrated process pipe column Download PDFInfo
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- CN114165207A CN114165207A CN202111497738.XA CN202111497738A CN114165207A CN 114165207 A CN114165207 A CN 114165207A CN 202111497738 A CN202111497738 A CN 202111497738A CN 114165207 A CN114165207 A CN 114165207A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000008569 process Effects 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 238000005516 engineering process Methods 0.000 claims description 9
- 230000010354 integration Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 32
- 238000005507 spraying Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000011001 backwashing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000638 stimulation Effects 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B43/11—Perforators; Permeators
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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)
- Earth Drilling (AREA)
Abstract
The invention relates to the field of oil extraction engineering, in particular to a wireless radio frequency control dragging type perforation-fracturing integrated process pipe column, which comprises a hydraulic anchor, a radio frequency controllable K344 packer, a radio frequency controllable hydraulic perforator, a radio frequency controllable switch, a Y211 packer, a plug and an oil pipe, wherein the hydraulic anchor, the radio frequency controllable K344 packer, the radio frequency controllable hydraulic perforator, the radio frequency controllable switch, the Y211 packer and the plug are sequentially arranged on the oil pipe from top to bottom; the fracturing device comprises a fracturing mode and a perforating mode, wherein the fracturing mode and the perforating mode can be switched; and (4) carrying out perforation construction, and if the layer to be fractured is perforated, directly injecting liquid to carry out fracturing construction of the layer. And can also prevent liquid from spraying in the pipe when being dragged.
Description
Technical Field
The invention relates to the field of oil extraction engineering, in particular to a wireless radio frequency control dragging type perforation-fracturing integrated process pipe column.
Background
In the stimulation measures of low-permeability and difficult-to-recover reservoirs, large-scale hydraulic fracturing still dominates. In particular, in the repeated fracturing process of the oil well, due to the pollution of the perforated near well and the requirement of hole repairing of a new layer, the fracturing construction needs to be carried out after the secondary perforation process. Particularly in the field of horizontal well fracturing, more than 50% of horizontal well repeated fracturing needs to be fractured after hole repairing. And multiple perforation processes are needed in construction, which wastes time and labor. If the functions of hole repairing and pipe column fracturing can be comprehensively realized, and one-time pipe column construction is performed, the single-well construction efficiency is improved, and the construction cost is reduced.
At present, as a spray gun perforation process is mature, in a non-perforated well, the efficiency of the spray gun perforation-annular fracturing integrated process is gradually improved, and the process is increasingly mature. However, for fracturing by a perforated well, the pertinence of a fracturing layer of annular sand adding cannot be compared with that of double-seal single-clamp dragging fracturing, and the process is only suitable for fracturing construction of a non-perforated well. And the traditional double-sealing single-clamping pipe column has no perforation function. If a perforation tool is simply added, the controllable liquid passing state of the annular channel and the function of no liquid spraying in the pressed pipe cannot be realized.
Disclosure of Invention
The invention aims to provide a wireless radio frequency control dragging type perforation-fracturing integrated process pipe column, which can realize the aims of perforation-fracturing integration and layer-by-layer dragging fracturing by controlling a radio frequency controllable packer, a radio frequency controllable hydraulic perforator and a radio frequency controllable switch through a wireless radio frequency technology.
The purpose of the invention is realized by the following technical scheme:
a wireless radio frequency control dragging type perforation-fracturing integrated process pipe column comprises a hydraulic anchor, a radio frequency controllable K344 packer, a radio frequency controllable hydraulic perforator, a radio frequency controllable switch, a Y211 packer, a plug and an oil pipe, wherein the hydraulic anchor, the radio frequency controllable K344 packer, the radio frequency controllable hydraulic perforator, the radio frequency controllable switch, the Y211 packer and the plug are sequentially arranged on the oil pipe from top to bottom;
a wireless radio frequency control dragging type perforation-fracturing integrated process pipe column comprises a fracturing mode and a perforation mode, wherein the fracturing mode and the perforation mode can be switched;
in the fracturing mode, the radio frequency controllable K344 packer and the Y211 packer are in a setting state, the liquid outlet of the radio frequency controllable switch device is opened, and the liquid outlet of the radio frequency controllable hydraulic perforator is closed.
In the perforation mode, the radio frequency controllable K344 packer is in a non-setting state, the Y211 packer is in a setting state, a liquid outlet of the radio frequency controllable switch device is closed, and a liquid outlet of the radio frequency controllable hydraulic perforator is opened;
the radio frequency technology is adopted to control the radio frequency controllable switch device and the liquid outlet of the radio frequency controllable hydraulic perforator to be in an open state and a closed state, and the radio frequency technology is adopted to control the radio frequency controllable K344 packer to be in a setting state and a non-setting state.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram I of a wireless radio frequency control dragging type perforation-fracturing integrated process pipe column structure of the invention;
FIG. 2 is a schematic diagram II of the structure of the wireless radio frequency control dragging type perforation-fracturing integrated process pipe column.
In the figure: a hydraulic anchor 1; radio frequency controllable K344 packer 2; a radio frequency controllable hydraulic perforator 3; a radio frequency controllable switch 4; y211 packer 5; a plug 6; an oil pipe 7; a sleeve 8; a blast hole 9; a liquid outlet 10; an oil layer 11; a barrier layer 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 2, in order to solve the technical problem of how to implement the perforation-fracturing integration and the layer-by-layer dragging fracturing, the structure and function of a wireless radio frequency control dragging type perforation-fracturing integration process pipe string are explained in detail below;
a wireless radio frequency control dragging type perforation-fracturing integrated process pipe column comprises a hydraulic anchor 1, a radio frequency controllable K344 packer 2, a radio frequency controllable hydraulic perforator 3, a radio frequency controllable switch 4, a Y211 packer 5, a plug 6 and an oil pipe 7, wherein the hydraulic anchor 1, the radio frequency controllable K344 packer 2, the radio frequency controllable hydraulic perforator 3, the radio frequency controllable switch 4, the Y211 packer 5 and the plug 6 are sequentially arranged on the oil pipe 7 from top to bottom;
when in use, as shown in figure 1, a hydraulic anchor 1, a radio frequency controllable K344 packer 2, a radio frequency controllable hydraulic perforator 3, a radio frequency controllable switch 4, a Y211 packer 5 and a plug 6 are connected in sequence to form, and the inner drift diameter of a central channel of an oil pipe 7 is 50 mm;
as shown in fig. 2, the blasthole 9 is a hole shot by the radio frequency controllable hydraulic perforator 3;
the hydraulic anchor 1 is used for fixing the pipe column; the damage of the vibration of the pipe column to the setting and separating functions of the Y211 packer 5 and the radio frequency controllable K344 packer 2 when high-pressure liquid is pumped is reduced;
the pipe plug 6 plugs the outlet at the bottommost end of the pipe column, so that the whole pipe column only has two controllable liquid outlet channels of the radio-frequency controllable hydraulic perforator 3 and the radio-frequency controllable switch 4;
the radio frequency controllable hydraulic perforator 3 can carry out perforation construction, and when the liquid flow velocity with low-concentration sand particles is larger than 200m/s in theoretical value and passes through a nozzle with the diameter of phi 4.5mm, the liquid flow can achieve the purpose of cutting a steel body; the hydraulic perforator utilizes the hydraulic cutting principle to enable high-speed jet flow to impact the inner wall of the casing, so that a circular hole is formed in the casing, a channel is created, and the perforating process is completed; preparing for fracturing construction;
the radio frequency controllable switch 4 can be used for fracturing construction, as shown in fig. 2, the fracturing is that a pump truck group on the ground is utilized to convey high-pressure liquid to the depth of an underground fracturing target layer through a fracturing oil pipe 7 pipe column, the high-pressure liquid is enabled to be set through the radio frequency controllable K344 packer 2, and an annular space between the oil pipe 7 and a sleeve 8 of a fracturing layer and a non-fracturing layer is sealed; meanwhile, high-pressure liquid enters an oil sleeve annulus through the radio frequency controllable switch 4, enters an oil layer through the blasthole 9, presses and opens cracks at the position to be fractured, and fills high-strength granular propping agent. After injection is stopped, the flow conductivity of the crack is improved, so that the oil production of a single well is improved;
the tubular column is used for fracturing after hole patching of a perforated well. The liquid outlets of the radio frequency controllable hydraulic perforator 3 and the radio frequency controllable switch 4 are controlled to be opened and closed in a wireless radio frequency non-contact mode; the repeated switching of the perforating and fracturing states of the tubular column can be realized, so that the multilayer construction of perforating and fracturing of the tubular column in one trip is completed, the process of carrying out a perforating process in advance is avoided, and the construction efficiency of a single well is improved;
in a perforation state, a Y211 packer 5 is used for packing, a radio frequency controllable K344 packer 2 is not set, perforation is carried out, after perforation is finished, when fracturing is carried out, the radio frequency controllable K344 packer 2 is directly controlled to be set, then the radio frequency controllable hydraulic perforator 3 and the radio frequency controllable switch 4 are switched in state, and the switching of perforation and fracturing is finished;
aiming at the problem that the original dragging fracturing string can not meet the perforation condition, the radio frequency controllable K344 packer 2 is adopted to control the string to enter a non-setting mode, and the perforation state of the string can be realized in an auxiliary mode. Meanwhile, the setting mode of the radio frequency controllable K344 packer 2 can be controlled through radio frequency, so that the tubular column enters a fracturing state;
the problem that backwashing is not clean and the setting of a rubber cylinder is influenced due to the fact that the backwashing process of an existing blowout prevention tool in a lifting pipe is limited by discharge capacity is solved. The radio frequency controllable switch 4 is opened to directly carry out large-discharge backwashing, which is beneficial to protecting a rubber cylinder with incomplete recovery, thereby improving the number of layers dragged by a single-trip pipe column;
the backwashing control valve of the original dragging lifting type pipe column is limited by the discharge capacity, so that backwashing is not clean, and the repeated setting effect of a rubber cylinder is influenced; the opening liquid outlet of the radio frequency controllable switch device 4 is utilized, the discharge capacity is not limited, large-discharge backwashing is directly carried out, the construction redundant fracturing sand setting is backwashed out of a well mouth, the dragging environment of the pipe column is purified, the incomplete rubber cylinder is protected from being damaged in the dragging process, the service life of the rubber cylinder is prolonged, and the number of layers dragged by the single pipe column is improved. The adaptability and the reliability of the pipe column are improved;
the liquid outlets of the radio-frequency controllable K344 packer 2 and the radio-frequency controllable hydraulic perforator 3 are closed, so that the tubular column can be controlled to enter a closed mode, and liquid is not sprayed in the tubular column after fracturing construction;
a wireless radio frequency control dragging type perforation-fracturing integrated process pipe column comprises a fracturing mode and a perforation mode, wherein the fracturing mode and the perforation mode can be switched with each other, and the fracturing mode and the perforation mode are explained in detail below;
the fracturing mode is a mode prepared for a certain construction position with a fracturing channel, and can be used for directly performing fracturing construction of a certain position;
the perforation mode is a mode prepared for a certain construction layer without a fracturing channel, namely, the fracturing channel is opened by utilizing the perforation mode of the pipe column, and then the fracturing mode is converted to carry out fracturing construction of the layer;
the working modes of the fracturing mode and the perforating mode are explained in two situations, namely fracturing construction of a perforated layer and an un-perforated layer;
the construction of the perforated horizon is explained in detail below;
the radio frequency controllable K344 packer 2 enters a fracturing mode through a radio frequency control pipe column to be in an opening state, a liquid outlet of the radio frequency controllable hydraulic perforator 3 is in a closing state, and a liquid outlet of the radio frequency controllable switch 4 is in an opening state.
After the pipe string is dragged to the position, the Y211 packer 5 is set through the mechanical action of lifting and lowering, and the setting state is kept. High-pressure liquid is directly injected into the inner cavity of the oil pipe 7, and the high-pressure liquid has throttling effect through the liquid outlet of the radio frequency controllable switch device 4, so that the radio frequency controllable K344 packer 2 is promoted to be set, and the fracturing construction of the layer is ensured.
The construction of the non-perforated horizon is explained in detail below;
the radio frequency controllable K344 packer 2 is in an opening state, the radio frequency controllable hydraulic perforator 3 is in an opening state, and the radio frequency controllable switch 4 is in a closing state when the radio frequency control pipe column enters a perforation mode.
After the pipe column is dragged to be in place, the Y211 packer 5 is set through the mechanical action of lifting and lowering, and the setting state is kept; high-pressure liquid is directly injected into the inner cavity of the oil pipe 7, the liquid outlet of the hydraulic perforator 3 can be controlled by the high-pressure liquid radio frequency, the effect of cutting the inner wall of the casing 8 is achieved, and perforation is carried out; at the moment, the radio frequency controllable K344 packer 2 does not pack the casing 8, so that the construction conditions that the annular fluid is needed due to the negative pressure caused by perforation are met, and a fracturing channel is formed on the casing 8; then the tubular column is controlled to be changed into a fracturing mode through radio frequency signals, and fracturing construction of the position is carried out.
After the construction of all the layers is finished, the liquid outlets of the radio frequency controllable hydraulic perforator 3 and the radio frequency controllable switch 4 are controlled to be closed, so that the aim of preventing liquid in the pipe of the lifting pipe column is fulfilled. And then carrying out a dragging process and carrying out lower-layer construction. The steps are repeated, so that the integrated construction of multilayer perforation and fracturing of the tubular column can be realized once;
in conclusion, the string completes the perforation-fracturing operation into one string construction for the perforated well. The original perforation and fracturing are changed into two times of pipe column construction, and the starting time and the running time of one time of pipe column are saved. The radio frequency controllable K344 packer 2 is adopted to control the packer to enter a setting prohibition mode, so that the string can be converted into a perforation state in an auxiliary mode. Meanwhile, the aim of preventing liquid from spraying in the pipe during dragging can be achieved;
in the fracturing mode, the radio frequency controllable K344 packer 2 and the Y211 packer 5 are in a setting state, the liquid outlet of the radio frequency controllable switch device 4 is opened, and the liquid outlet of the radio frequency controllable hydraulic perforator 3 is closed.
In the perforation mode, the radio frequency controllable K344 packer 2 is in a non-setting state, the Y211 packer 5 is in a setting state, a liquid outlet of the radio frequency controllable switch device 4 is closed, and a liquid outlet of the radio frequency controllable hydraulic perforator 3 is opened;
the radio frequency technology is adopted to control the liquid outlets of the radio frequency controllable switch device 4 and the radio frequency controllable hydraulic perforator 3 to be in an open state and a closed state, and the radio frequency controllable K344 packer 2 is controlled to be in a setting state and a non-setting state;
the radio frequency technology is a non-contact automatic identification technology. A computer program can edit a certain artificially set code into a signal transmitter and deliver the signal transmitter into a well. Through the signal transmission of the signal transmitter and the radio frequency controllable switch 4, a code set manually is transmitted to the radio frequency controllable switch 4 in a signal form, and the actuating mechanism is operated to push the sliding sleeve of the radio frequency controllable switch 4 to move back and forth, so that the aim of opening and closing the liquid outlet of the radio frequency controllable switch is fulfilled;
the radio frequency can be controlled and the opening and closing of the jet hole of the hydraulic perforator 3 can be controlled; the opening and closing of a setting cavity of the radio frequency controllable K344 packer 2 can also be controlled; by closing the radio frequency controllable switch 4 and opening the liquid outlet of the radio frequency controllable hydraulic perforator 3, the tubular column can be in a perforation state, and perforation construction is carried out; the tubular column can be in a fracturing state by opening the radio frequency controllable switch 4 and the liquid outlet of the radio frequency controllable hydraulic perforator 3, and fracturing construction can be carried out.
Claims (10)
1. The utility model provides a wireless radio frequency control drags formula perforation-fracturing integration technology tubular column, includes oil pipe (7) and radio frequency controllable K344 packer (2) and Y211 packer (5) of fixed connection on oil pipe (7), its characterized in that: the oil pipe (7) is also provided with a radio frequency controllable switch device (4) and a radio frequency controllable hydraulic perforator (3).
2. The integrated process string for wireless radio frequency control dragging type perforation-fracturing as claimed in claim 1, wherein: the radio frequency controllable K344 packer (2) is located on the upper side of the Y211 packer (5), and the radio frequency controllable switch device (4) and the radio frequency controllable hydraulic perforator (3) are located between the radio frequency controllable K344 packer (2) and the Y211 packer (5).
3. The integrated process string for wireless radio frequency control dragging type perforation-fracturing as claimed in claim 1, wherein: the upper end of the oil pipe (7) is connected with a hydraulic anchor (1).
4. The integrated process string for wireless radio frequency control dragging type perforation-fracturing as claimed in claim 1, wherein: the lower end of the oil pipe (7) is connected with a plug (6).
5. The integrated process string for wireless radio frequency control dragging type perforation-fracturing as claimed in claim 1, wherein: the process string includes a fracturing mode and a perforating mode.
6. The integrated process string for wireless radio frequency control dragging type perforation-fracturing as claimed in claim 5, wherein: in the fracturing mode, the radio-frequency controllable K344 packer (2) and the Y211 packer (5) are in a setting state, the liquid outlet of the radio-frequency controllable switch device (4) is opened, and the liquid outlet of the radio-frequency controllable hydraulic perforator (3) is closed.
7. The integrated process string for wireless radio frequency control dragging type perforation-fracturing as claimed in claim 5, wherein: in the perforation mode, the radio-frequency controllable K344 packer (2) is in a non-setting state, the Y211 packer (5) is in a setting state, the liquid outlet of the radio-frequency controllable switch device (4) is closed, and the liquid outlet of the radio-frequency controllable hydraulic perforator (3) is opened.
8. The integrated process string for wireless radio frequency control dragging type perforation-fracturing as claimed in claim 5, wherein: the liquid outlets of the radio frequency controllable switch device (4) and the radio frequency controllable hydraulic perforator (3) are controlled to be in an open state and a closed state by adopting a radio frequency technology.
9. The integrated process string for wireless radio frequency control dragging type perforation-fracturing as claimed in claim 5, wherein: and the radio frequency controllable K344 packer (2) is controlled to be in a setting state and a non-setting state by adopting a radio frequency technology.
10. The integrated wireless radio frequency controlled perforating-fracturing process string as claimed in any one of claims 5 to 9, wherein: the fracturing mode and the perforating mode of the process pipe string can be switched mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111497738.XA CN114165207B (en) | 2021-12-09 | 2021-12-09 | Wireless radio frequency control dragging type perforation-fracturing integrated process tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111497738.XA CN114165207B (en) | 2021-12-09 | 2021-12-09 | Wireless radio frequency control dragging type perforation-fracturing integrated process tubular column |
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| CN114165207A true CN114165207A (en) | 2022-03-11 |
| CN114165207B CN114165207B (en) | 2024-04-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030090390A1 (en) * | 1998-08-28 | 2003-05-15 | Snider Philip M. | Method and system for performing operations and for improving production in wells |
| CN104632167A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Hydraulic jet double-seal single-blockage perforation and fracturing integrated process pipe string |
| CN205778741U (en) * | 2016-06-01 | 2016-12-07 | 中国海洋石油总公司 | A kind of less radio-frequency fracturing sliding bush structure |
| CN205936562U (en) * | 2016-08-03 | 2017-02-08 | 中国石油天然气股份有限公司 | It splits tubular column to switch horizontal well pressure of formula midway |
| CN109184652A (en) * | 2018-09-25 | 2019-01-11 | 中国石油天然气股份有限公司 | Marmem pit shaft reproduces coiled tubing underseal refracturing method |
-
2021
- 2021-12-09 CN CN202111497738.XA patent/CN114165207B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030090390A1 (en) * | 1998-08-28 | 2003-05-15 | Snider Philip M. | Method and system for performing operations and for improving production in wells |
| CN104632167A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Hydraulic jet double-seal single-blockage perforation and fracturing integrated process pipe string |
| CN205778741U (en) * | 2016-06-01 | 2016-12-07 | 中国海洋石油总公司 | A kind of less radio-frequency fracturing sliding bush structure |
| CN205936562U (en) * | 2016-08-03 | 2017-02-08 | 中国石油天然气股份有限公司 | It splits tubular column to switch horizontal well pressure of formula midway |
| CN109184652A (en) * | 2018-09-25 | 2019-01-11 | 中国石油天然气股份有限公司 | Marmem pit shaft reproduces coiled tubing underseal refracturing method |
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| CN114165207B (en) | 2024-04-26 |
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