CN213684089U - Separated fracturing sand blocking production integrated process pipe column - Google Patents
Separated fracturing sand blocking production integrated process pipe column Download PDFInfo
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- CN213684089U CN213684089U CN202022908089.5U CN202022908089U CN213684089U CN 213684089 U CN213684089 U CN 213684089U CN 202022908089 U CN202022908089 U CN 202022908089U CN 213684089 U CN213684089 U CN 213684089U
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Abstract
The utility model relates to a separate layer fracturing keeps off sand production integration technology tubular column. The string comprises an oil pipe and a layering/section fracturing subsystem, wherein the layering/section fracturing subsystem is positioned in the annular space of the oil pipe and a casing. The layered/segmented fracturing subsystem comprises a packer, a control screen pipe, a door-closing sliding sleeve and a plug, wherein the control screen pipe is positioned between the packer and the door-closing sliding sleeve, and the plug is positioned at the bottom of an oil pipe. The utility model discloses after utilizing the packer to surely fall into sublayer/section with whole oil reservoir/section, utilize the sliding sleeve that can close the door to carry out the fracturing transformation that evenly to each sublayer/section, then, utilize during production to control the screen pipe and provide the passageway for each layer/section oil gas flows in the production string, when satisfying production, can effectively block fracturing sand or stratum piece return and tell get into the production string in, prevent that it from blockking up the production string, ensure the long-term production of oil gas well.
Description
Technical Field
The utility model relates to an oil development technical field, in particular to separated layer fracturing keeps off sand production integration technology tubular column.
Background
At present, aiming at oil and gas reservoirs which are difficult to use, in order to reduce seepage resistance and effectively communicate with reservoirs, multi-stage stratified fracturing reformation is mostly adopted. On one hand, after the fracturing of the layering section, in order to ensure that a production channel is smooth, a small-diameter coiled tubing needs to be put into a fracturing string for backwashing and sand washing, and because fracturing channels (fracturing sliding sleeves or perforation holes) of all intervals are not effectively closed, a propping agent which is just added in the fracturing of the layering section or formation debris of volume fracturing can be returned and spit, sand washing is difficult to wash, and even sand is stuck to the sand washing string to cause overhaul in severe cases; on the other hand, the fracturing channel is used as a channel for fracturing fluid and propping agent to enter a reservoir stratum and reform the reservoir stratum, and is also used as a production channel. Because the fracturing sliding sleeve or the perforation hole has larger openings, fracturing sand and formation debris near the shaft can be carried into the shaft along with the entering of air flow or liquid flow during production, so that a production channel of an oil pipe is blocked, and the long-term production of an oil-gas well is influenced. At this time, if normal production is required, the production pressure difference needs to be reduced, and sand control production is needed, so that the productivity of the oil-gas well is influenced. If sand control is not performed, normal production is adopted, except that a production channel is blocked, in such high-pressure oil and gas wells, the pressure is high, the yield is high, part of carried sand can impact and wash production strings and ground equipment, and corresponding safety risks can be caused; meanwhile, if the production channel is blocked, a coiled tubing needs to be put into the production channel for sand washing operation, and the high-pressure oil-gas well has high risk and high cost of operation under pressure. In order to solve the problem, the patent provides a layered fracturing sand blocking production integrated process pipe column.
SUMMERY OF THE UTILITY MODEL
The utility model aims at being exactly the above-mentioned defect to prior art exists, provide a layering fracturing keeps off sand production integration technology tubular column, cut into sublayer/section back with whole oil reservoir/section through the packer, utilize the sliding sleeve that can close the door to carry out the fracturing transformation of evenly to each sublayer/section, then, utilize during production control screen pipe to provide the passageway for each layer/section oil gas flows in the production tubular column, and effectively block fracturing sand or stratum piece return spit get into the production tubular column in, prevent that it from blockking up the production tubular column, ensure the long-term production of oil gas well.
The utility model provides a layering fracturing keeps off sand production integration technology tubular column, this tubular column include sleeve pipe, oil pipe and layering/section fracturing subsystem, layering/section fracturing subsystem be located oil pipe and sheathed tube ring aerial.
The layering/section fracturing subsystem comprises a first packer, a second packer, a third packer, a first control screen pipe, a second control screen pipe, a third control screen pipe, a first door-closing sliding sleeve, a second door-closing sliding sleeve, a third door-closing sliding sleeve and a plug, wherein the first control screen pipe is positioned between the first packer and the first door-closing sliding sleeve, the second control screen pipe is positioned between the second packer and the second door-closing sliding sleeve, the third control screen pipe is positioned between the third packer and the third door-closing sliding sleeve, and the plug is positioned at the bottom of an oil pipe.
The first packer, the second packer and the third packer are open hole well layering packers or cased hole well layering packers.
And the first packer, the second packer and the third packer are sealed to divide the whole oil layer/section into a plurality of relatively independent first oil-gas small layers/sections, second oil-gas small layers/sections and third oil-gas small layers/sections.
The first control screen pipe, the second control screen pipe and the third control screen pipe are adaptive control screen pipes.
The first door-closing sliding sleeve, the second door-closing sliding sleeve and the third door-closing sliding sleeve are door-closing fracturing sliding sleeves.
Compared with the prior art, the utility model discloses following beneficial effect has:
the separate-layer/section fracturing reconstruction and sand blocking production are realized by one-trip pipe column, the functions are complete, and the operation efficiency is high. After the whole oil layer/section is cut into small layers/sections by adopting a packer, uniform fracturing transformation is carried out on each small layer/section through a sliding sleeve capable of closing a door, then, a control sieve tube is utilized to provide a channel for the oil gas of each layer/section to flow into a production pipe column during production, fracturing sand or stratum debris is effectively blocked from flowing back into the production pipe column, the production pipe column is prevented from being blocked, and the long-term production of an oil-gas well is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the lowest oil layer/section 6 of the present invention during fracturing;
fig. 3 is a schematic structural diagram of the middle layer oil layer/section 5 of the present invention during fracturing;
fig. 4 is a schematic structural diagram of the uppermost oil layer/section 4 of the present invention during fracturing;
fig. 5 is a schematic structural diagram in the production of the present invention.
Wherein: 1. the packer comprises a casing, 2, an oil pipe, 311, a first packer, 312, a second packer, 313, a third packer, 321, a first control screen, 322, a second control screen, 323, a third control screen, 331, a first door-closing sliding sleeve, 332, a second door-closing sliding sleeve, 333, a third door-closing sliding sleeve, 34, a plug, 4, a first hydrocarbon sublayer/section, 5, a second hydrocarbon sublayer/section, 6 and a third hydrocarbon sublayer/section.
Detailed Description
The preferred embodiments of the present invention will be described in three oil layers/sections in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only for illustrating and explaining the present invention and are not intended to limit the present invention.
As shown in figure 1, the utility model discloses a layering fracturing keeps off sand production integration technology tubular column, this tubular column includes sleeve pipe 1, oil pipe 2 and layering/section fracturing subsystem, layering/section fracturing subsystem be located sleeve pipe 1 and oil pipe 2's annular space.
The zonal/zonal fracturing subsystem includes a first packer 311, a second packer 312, a third packer 313, a first control screen 321, a second control screen 322, a third control screen 323, a first door-closing sliding sleeve 331, a second door-closing sliding sleeve 332, a third door-closing sliding sleeve 333 and a plug 34, wherein the first control screen 321 is located between the first packer 311 and the first door-closing sliding sleeve 331, the second control screen 322 is located between the second packer 312 and the second door-closing sliding sleeve 332, the third control screen 323 is located between the third packer 313 and the third door-closing sliding sleeve 333, and the plug 34 is located at the bottom of the tubing 2.
Preferably, the first packer 311, the second packer 312 and the third packer 313 are open hole well zonation packers or cased hole well zonation packers.
Preferably, the first packer 311, the second packer 312 and the third packer 313 are set to separate the whole oil layer/section into a plurality of relatively independent first oil and gas small layers/sections 4, second oil and gas small layers/sections 5 and third oil and gas small layers/sections 6.
Preferably, the first, second and third control screens 321, 322, 323 are adaptive control screens.
The utility model discloses the working process of layering fracturing fender sand production integration technology tubular column as follows:
(1) running in of pipe column
The plug 34, the third door-closing sliding sleeve 333, the third control screen 323, the third packer 313, the second door-closing sliding sleeve 332, the second control screen 322, the second packer 312, the first door-closing sliding sleeve 331, the first control screen 321 and the first packer 311 are connected in sequence and then are lowered into the casing 1 through the tubing 2 into the designed downhole location.
(2) Layer/segment packing layer
And (3) pressurizing from the inside of the oil pipe 2, setting a first packer 311, a second packer 312 and a third packer 313 simultaneously, and layering the whole oil layer/section into 3 small layers/sections, namely a first oil gas small layer/section 4, a second oil gas small layer/section 5 and a third oil gas small layer/section 6.
(3) Separate layer/stage fracturing
A small soluble fracturing ball is thrown in, a ball seat of the third closable sliding sleeve 333 is driven off by pressurization, and sand is added to complete fracturing transformation of a third oil gas small layer/section 6, as shown in fig. 2; then putting a soluble fracturing ball with a first-grade size, pressurizing and knocking off a ball seat of the second closable sliding sleeve 332, and adding sand to complete the fracturing transformation of a second oil gas small layer/section 5, as shown in fig. 3; then, a larger soluble fracturing ball is put in, a ball seat of the first closable sliding sleeve 331 is knocked out under the pressure, and sand is added to complete the fracturing transformation of a first oil-gas small layer/section 4, as shown in fig. 4; and finally, injecting a solvent corresponding to the soluble fracturing balls, melting the soluble fracturing balls, carrying out sand washing on the whole well section, and preparing for production.
(4) Commingled production of sand
And (3) opening a production gate of the wellhead Christmas tree, automatically closing the sand blasting port by the first door-closing sliding sleeve 331, the second door-closing sliding sleeve 332 and the third door-closing sliding sleeve 333 under the action of production pressure difference, and allowing the formation oil gas to enter the production string only through the first control screen 321, the second control screen 322 and the third control screen 323, as shown in FIG. 5.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (4)
1. The fracturing-layer sand-blocking production integrated process pipe column is characterized by comprising a casing, an oil pipe and a fracturing-layer/fracturing-section subsystem, wherein the fracturing-layer/fracturing-section subsystem is positioned in an annulus between the oil pipe and the casing;
the system comprises a layering/section fracturing subsystem, a fracturing sub-system and a fracturing sub-system, wherein the layering/section fracturing subsystem comprises a first packer, a second packer, a third packer, a first control screen, a second control screen, a third control screen, a first door-closing sliding sleeve, a second door-closing sliding sleeve, a third door-closing sliding sleeve and a plug, the first control screen is positioned between the first packer and the first door-closing sliding sleeve, the second control screen is positioned between the second packer and the second door-closing sliding sleeve, the third control screen is positioned between the third packer and the third door-closing sliding sleeve, and the plug is positioned at the bottom of an oil pipe;
the first control screen pipe, the second control screen pipe and the third control screen pipe are adaptive control screen pipes.
2. The process string according to claim 1, wherein the first, second and third packers are open hole or cased hole zonation packers.
3. The process string according to claim 1, wherein the first packer, the second packer, and the third packer are set to separate the entire zone/zone into a plurality of relatively independent first, second, and third hydrocarbon sub-zones/zones.
4. The process string according to claim 1, wherein the first, second and third door-closable sliding sleeves are door-closable fracturing sliding sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022908089.5U CN213684089U (en) | 2020-12-07 | 2020-12-07 | Separated fracturing sand blocking production integrated process pipe column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022908089.5U CN213684089U (en) | 2020-12-07 | 2020-12-07 | Separated fracturing sand blocking production integrated process pipe column |
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| Publication Number | Publication Date |
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| CN213684089U true CN213684089U (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877031A (en) * | 2023-09-08 | 2023-10-13 | 山东博赛特石油技术有限公司 | Temporary plugging soluble slotted screen pipe and use method thereof |
-
2020
- 2020-12-07 CN CN202022908089.5U patent/CN213684089U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877031A (en) * | 2023-09-08 | 2023-10-13 | 山东博赛特石油技术有限公司 | Temporary plugging soluble slotted screen pipe and use method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Gang Inventor after: Chen Guanyu Inventor after: Chen Guanhe Inventor before: Meng Xianbo Inventor before: Liu Yanhui Inventor before: Liu Xifeng Inventor before: Wang Yong Inventor before: Zhao Wenhong Inventor before: Li Gang Inventor before: Feng Xiaohong Inventor before: Chen Guanyu Inventor before: Chen Guanhe |
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| CB03 | Change of inventor or designer information |