CN218882166U - Layered sand prevention layered oil production pipe column of electric pump well - Google Patents
Layered sand prevention layered oil production pipe column of electric pump well Download PDFInfo
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- CN218882166U CN218882166U CN202223365693.3U CN202223365693U CN218882166U CN 218882166 U CN218882166 U CN 218882166U CN 202223365693 U CN202223365693 U CN 202223365693U CN 218882166 U CN218882166 U CN 218882166U
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Abstract
The utility model relates to an oil well layering exploitation technology, in particular to electric pump well layering sand control layering oil production pipe column. A layered sand prevention layered oil production pipe column of an electric pump well comprises a sand prevention pipe column, an oil production pipe column and a lifting pipe column, wherein the lifting pipe column is arranged at the upper part of the oil production pipe column; the sand control pipe column comprises a casing, sand filtering pipes, expansion packers and suspension packers, wherein the casing consists of short casings and sand filtering pipes, a group of sand filtering pipes is arranged between an upper short casing and a lower short casing, each short casing is provided with one expansion packer, the top end of the uppermost short casing is provided with the suspension packer, and the bottom end of the lowermost short casing is provided with a large plug; the oil production pipe column comprises an oil pipe, a hydraulic control switch and a sealing plug, the oil pipe is inserted into the casing, the sealing plug is arranged between the oil pipe and the casing, the hydraulic control switch is arranged on the oil pipe, and the hydraulic control switch is arranged at an oil layer position. The utility model discloses can realize the purpose of the great oil reservoir output maximize of difference between layers.
Description
Technical Field
The utility model relates to an oil well layering exploitation technology, in particular to electric pump well layering sand control layering oil production pipe column.
Background
The problem that sand is easy to produce in a pottery group in an offshore oil field is solved by adopting a general filling sand prevention process at present. The annular filling compactness of the process is poor, the inner diameter of the tubular column after sand control is only 76mm, and the existing layered oil production technology is difficult to meet the layered oil production after sand control.
The oil layer well section is long, a plurality of small layers are jointly mined, the average number of the jointly mined layers is 4.8, the permeability grade difference is 3.4, the interlayer interference is further aggravated through long-term water injection mining, and at present, all electric pump lifting cage combined mining modes are adopted. In order to further improve the interlayer utilization degree and achieve the purpose of improving the recovery ratio, the layered oil recovery development is required.
The layered oil production technology is divided into four types of technologies of electric control, hydraulic control, wireless pressure pulse control and electric-liquid integration according to a control mode. The hydraulic control and electric control technology adopts Y-shaped joints and fittingsThe mode of preparing a hydraulic control mechanical sliding sleeve or an electric control sliding sleeve is mainly applied to 9 5 / 8 And the flow rate cannot be controlled.
At present, the sand control of an oil well mainly adopts gravel packing, the inner diameter of the well left after the gravel packing is smaller than 90mm, and the oil well is limited by the inner diameter of a sand control casing pipe, so that the layered oil extraction after 7-inch shaft layered sand control is difficult to perform. Therefore, a separate-layer sand control separate-layer oil production process technology which is reliably suitable for the shaft needs to be designed, and a multiple-layer oil production process in the sand control pipe column can be realized.
Chinese patent document CN106703763A discloses "an intelligent separate-layer mining system suitable for sand control completion of offshore oilfield", which includes a wellhead christmas tree connected by an oil pipe, an underground safety valve, a cable-passing packer, a Y-joint, a perforated pipe, a cable-passing positioning seal, a first intelligent production allocator, a first cable-passing insertion seal, a second intelligent production allocator, a second cable-passing insertion seal, a third intelligent production allocator and a circular plug, wherein the cable-passing packer is provided with a vent valve and a cable penetrator, the Y-joint is connected with an electric submersible pump unit, the electric submersible pump unit is connected with an electric submersible pump control system, and the first intelligent production allocator, the second intelligent production allocator and the third intelligent production allocator are all connected with a ground controller. Although the system can realize the purposes of water exploration, layered testing, water plugging, layered mining and the like of an oil well through one-time operation, and can carry out real-time monitoring and real-time control on underground parameters such as single-layer flow, water content, pressure, temperature and the like, the system needs a larger inner diameter of a shaft due to the fact that a mode that a Y connector is connected with an electric submersible pump unit, and has great difficulty in realizing a well with a small diameter.
CN110374551A discloses "a downhole hydraulic control starting sliding sleeve control system and control method", which sends a control instruction to a downhole hydraulic control starting sliding sleeve in a manner of sending pressure waves or electromagnetic waves downhole on the ground, measures the control instruction sent by the ground by using a downhole sensor installed on the downhole hydraulic control starting sliding sleeve, and sends the measured control instruction to a downhole control circuit board, the downhole control circuit board judges that the control instruction is correct, controls the downhole electromagnetic valve to open, controls the fluid in a shaft to flow into an upper cavity in the downhole hydraulic control starting sliding sleeve through the downhole electromagnetic valve, pushes a piston rod to move downwards, and opens the downhole hydraulic control starting sliding sleeve. The transmission mode of pressure waves or electromagnetic waves of oil extraction of the system needs matched signal sending and receiving equipment when the system is realized in a shaft, so that the complexity of a pipe column is increased, and the reliability is reduced.
Disclosure of Invention
The utility model discloses not enough to prior art exists, an electric pump well layering sand control layering oil production pipe column of the great oil reservoir output maximize of difference between realization layers is provided.
The utility model discloses an electric pump well layering sand control layering oil production pipe column adopts following technical scheme:
the pipe column comprises a sand prevention pipe column, an oil production pipe column and a lifting pipe column, wherein the lifting pipe column is arranged on the upper part of the oil production pipe column, and the sand prevention pipe column is arranged on the outer side of the oil production pipe column.
The sand control pipe column comprises a casing, sand filtering pipes, expansion packers and suspension packers, the casing is composed of short casings and the sand filtering pipes, a group of sand filtering pipes is arranged between an upper short casing and a lower short casing, each short casing is provided with one expansion packer, the top end of the upper short casing is provided with the suspension packer, and the bottom end of the lower short casing is provided with a large plug.
The oil production pipe comprises an oil pipe, hydraulic switches and a sealing plug, the oil pipe is inserted into the sleeve, the sealing plug is arranged between the oil pipe and the sleeve, the hydraulic switches are arranged on the oil pipe and are arranged at oil layer positions (one hydraulic switch is arranged at each oil layer position on the oil pipe), and a small plug is arranged at the bottom end of the oil pipe;
the lifting pipe column comprises an electric pump suspension device and an electric pump unit, the lower end of the electric pump suspension device is connected with an oil pipe of the oil production pipe column, and the electric pump unit is connected and suspended inside the electric pump suspension device.
The sand filtering pipe adopts a shape memory sieve pipe, and does not need filling operation.
The sleeve is connected with the sand filter pipe in series, and the sand filter pipe is positioned at the oil layer.
The hydraulic control switch adopts a double-switch hydraulic control switch or a multi-opening hydraulic control switch.
The sealing plug is at the inflatable packer.
The sand screen pipe is preferably a shape memory screen pipe, and does not need filling operation.
Each hydraulic control switch on the oil pipe is connected through a hydraulic control pipeline, and the ground control cabinet is used for realizing independent control of the underground switch on the ground.
The expansion packer is an oil-water expansion packer.
The swelling packer is located between the upper oil layer and the lower oil layer.
The sand filtering pipe, the expansion packer, the suspension packer, the electric pump suspension device and the electric pump unit are all in the prior art.
Before the casing pipe is connected with the suspension packer, the casing pipe of the sand control pipe column, the sand filtering pipe, the expansion packer and the suspension packer are placed in an oil well, the oil production pipe column is placed in the sand control pipe column, the suspension packer is connected to the upper end of the casing pipe, the sand control pipe column and the oil production pipe column are connected, and then the lifting pipe column is put into the well head. And starting the electric pump unit to realize oil extraction. The layering sand prevention is realized by the sand prevention pipe column.
The utility model discloses a hang packer and can go into down with layering sand control tubular column and layering oil production pipe integration, improve the efficiency of construction greatly, separate through the liquid accuse and adopt the device and realize that the individual layer divides and adopts or the multilayer is combined to adopt, realize the purpose of the great oil reservoir output maximize of difference between the layer.
The utility model has the characteristics of it is following:
1. the packer which expands when meeting oil and water is adopted to realize the pressure-free setting;
2. the filling-free operation construction is realized by adopting the expansion memory sieve tube;
3. the integrated running of the sand control pipe column and the separate production pipe column is realized by hanging the packer;
4. and the yield of each underground reservoir is independently controlled by adopting a hydraulic control switching mode.
Drawings
Fig. 1 is the structure schematic diagram of the layered sand control layered oil production pipe column of the electric pump well.
In the figure: 1. a large plug; 2. a small plug; 3. an oil pipe; 4. a sand screen pipe; 5. a hydraulic control switch; 6. a sleeve; 7. sealing the plug; 8. a swelling packer; 9. hanging a packer; 10. a hydraulic control pipeline; 11. an electric pump suspension device; 12. an electric pump unit; 13. a cable; 14. a ground control cabinet; 15. a first oil layer; 16. a second oil layer.
Detailed Description
As shown in fig. 1, the utility model discloses an electric pump well layering sand control layering oil production pipe string specifically includes sand control tubular column, oil production pipe column and the hoisting tubular column on upper portion, and the hoisting tubular column sets up on the upper portion of oil production pipe column, and the sand control tubular column sets up the outside at oil production pipe column.
Example 1
This embodiment combines fig. 1 to right the utility model discloses a each part detailed description of electric pump well layering sand control layering oil production pipe column.
The sand control tubular column comprises a sleeve 6, a sand filtering pipe 4, an expansion packer 8 and a hanging packer 9, wherein the expansion packer 8 is an oil-water swelling packer. The casing 6 comprises a plurality of sections of short casings, a group of sand filtering pipes 4 are arranged between an upper section of short casing and a lower section of short casing, the short casings are connected with the sand filtering pipes 4 in series, the sand filtering pipes 4 are positioned at the positions of oil layers, in the figure 1, three sections of short casings and two sand filtering pipes 4 are arranged, and the two sand filtering pipes 4 are respectively positioned at the positions of a first oil layer 15 and a second oil layer 16. Each short casing is provided with an expansion packer 8, each expansion packer 8 is arranged between an upper oil layer and a lower oil layer, and the expansion packer 8 is arranged between a first oil layer 15 and a second oil layer 16 in the figure 1. And a hanging packer 9 is arranged at the top end of the uppermost section of short casing. The bottom end of the lowest section of short sleeve is provided with a large plug 1. The casing 6 connects the tools, such as the sand screen 4, the swell packer 8 and the hang-off packer 9. The sand screen 4, the swell packer 8 and the hang packer 9 are all prior art. The sand screen 4 is preferably a shape memory screen, and no packing is required.
The oil production pipe comprises a small plug 2, an oil pipe 3, a hydraulic control switch 5 and a sealing plug 7. The bottom end of the oil pipe 3 is provided with a small plug 2. The oil pipe 3 is sleeved in the sleeve 6, and a sealing plug 7 is arranged between the oil pipe 3 and the sleeve 6. The oil pipe 3 is provided with a hydraulic control switch 5, and the hydraulic control switch 5 is arranged at the oil layer. Each oil layer on the oil pipe 3 is provided with a hydraulic control switch 5, and in fig. 1, the first oil layer 15 and the second oil layer 16 on the oil pipe 3 are provided with hydraulic control switches 5. A sealing plug 7 is located in the region of the inflatable packer 8 and is arranged in the annulus between the tubing 3 and the casing 6. The hydraulic control switch 5 is connected to a ground control cabinet 14 through a hydraulic control pipeline 10, and the ground control of the underground switch is realized. The pilot-controlled switch 5 can adopt a double-switch pilot-controlled switch and a multi-opening pilot-controlled switch.
The suspended packer 9 can connect the outer sand control string (casing 6) with the inner production string (tubing 3) simultaneously.
The hoisting string comprises an electric pump suspension 11 and an electric pump unit 12. The electric pump unit 12 is connected to a ground control cabinet 14 through a cable 13, so that direct frequency modulation control of the underground electric pump by the ground is realized. The upper end of the electric pump suspension device 11 is connected with the oil pipe 3, the lower end of the electric pump suspension device is connected with the oil pipe 3 of the oil production pipe column, and the electric pump unit 12 is connected and suspended inside the electric pump suspension device 11. The electric pump suspension device 11 and the electric pump unit 12 are both in the prior art.
Example 2
This embodiment is right taking 2 layers of oil reservoir as an example the utility model discloses an on-the-spot construction process detail description of electric pump well layering sand control layering oil production pipe column.
The sand control string is first run in, including the casing 6, the sand screen 4, and the expansion packer 8. The sand screen 4 and the sleeve 6 are sequentially inserted and connected in series. In FIG. 1, two sand screens 4 are located in the first reservoir 15 and the second reservoir 16, respectively, and an inflatable packer 8 is located between the first reservoir 15 and the second reservoir 16.
Before the casing 6 is connected with the suspension packer 9, a production string is put into the casing 6 and comprises the oil pipe 3 and two hydraulic switches 5 and a sealing plug 7 on the oil pipe 3, the two hydraulic switches 5 are respectively positioned on a first oil layer 15 and a second oil layer 16, and the sealing plug 7 is positioned between the first oil layer 15 and the second oil layer 16.
Then, a hanging packer 9 is connected to the upper end of the casing 6, the sand prevention pipe column and the oil production pipe column are connected, and then the lifting pipe column is lowered to the well head.
Example 3
This embodiment is right the utility model discloses a layering sand control process specification of electric pump well layering sand control layering oil production pipe column.
After each part is in place, the ground control cabinet 14 firstly presses the hydraulic switch 5 to a certain pressure through the hydraulic control pipeline 10, closes the hydraulic control switches of all layers, presses the oil pipe 3 in the positive direction, sets and hangs the packer 9, realizes the setting and anchoring functions of the whole pipe string, and adopts the automatic expansion setting after the interlayer packer of the expansion packer 9 is in place. The sand filtering pipe 4 adopts a shape memory sieve pipe, and after the sand filtering pipe is in place, the underground temperature stimulates the sand filtering pipe to expand and fill the annular space for well completion, so that the layering sand prevention process of the integral pipe column is completed.
Example 4
This embodiment is right the utility model discloses a layering oil recovery process detail description of electric pump well layering sand control layering oil production pipe column.
When layered oil extraction is needed, the ground control cabinet 14 presses the hydraulic switch 5 at the corresponding layer to control the corresponding layer to be opened or closed, so that the adjustment of the layer is realized. The sealing is completed between each layer by the sealing plug 7. The hydraulic control switch 5 includes, but is not limited to, a double-switch hydraulic control switch and a multi-opening hydraulic control switch, wherein the former can perform two actions of opening and closing, and the latter can perform opening, closing and multiple intermediate state adjustments. The flow monitoring can be by electronic flow meter or light test.
The above only is the preferred embodiment of the present invention, not for limiting the scope of the present invention, other applications the equivalent changes of the patent spirit of the present invention all belong to the scope of the present invention.
Claims (8)
1. The utility model provides an electric pump well layering sand control layering oil production pipe column which characterized by: the device comprises a sand prevention pipe column, an oil production pipe column and a lifting pipe column, wherein the lifting pipe column is arranged at the upper part of the oil production pipe column, and the sand prevention pipe column is arranged at the outer side of the oil production pipe column;
the sand control pipe column comprises a casing pipe, sand filtering pipes, expansion packers and suspension packers, wherein the casing pipe comprises short casing pipes and the sand filtering pipes, a group of sand filtering pipes is arranged between an upper short casing pipe and a lower short casing pipe, each short casing pipe is provided with one expansion packer, the top end of the uppermost short casing pipe is provided with the suspension packer, and the bottom end of the lowermost short casing pipe is provided with a large plug;
the oil production pipe comprises an oil pipe, a hydraulic control switch and a sealing plug, the oil pipe is inserted into the sleeve, the sealing plug is arranged between the oil pipe and the sleeve, the hydraulic control switch is arranged on the oil pipe and is arranged at an oil layer part, and a small plug is arranged at the bottom end of the oil pipe;
the lifting pipe column comprises an electric pump suspension device and an electric pump unit, the lower end of the electric pump suspension device is connected with an oil pipe of the oil production pipe column, and the electric pump unit is connected and suspended inside the electric pump suspension device.
2. The electric pump well layered sand control layered oil production pipe column according to claim 1, characterized in that: the sand filtering pipe is a shape memory sieve pipe.
3. The electric pump well layered sand control layered oil production pipe column according to claim 1, characterized in that: the sleeve is connected with the sand filter pipe in series, and the sand filter pipe is positioned at the oil layer.
4. The electric pump well layered sand control layered oil production pipe column according to claim 1, characterized in that: the hydraulic control switch adopts a double-switch hydraulic control switch or a multi-opening hydraulic control switch.
5. The electric pump well layered sand control layered oil production pipe column according to claim 1, characterized in that: the sealing plug is at the inflatable packer.
6. The electric pump well layered sand control layered oil production pipe column according to claim 1, characterized in that: and each hydraulic control switch on the oil pipe is connected through a hydraulic control pipeline.
7. The electric pump well layered sand control layered oil production pipe column according to claim 1, characterized in that: the expansion packer is an oil-water expansion packer.
8. The electric pump well layered sand control layered oil production pipe column according to claim 1, characterized in that: the swelling packer is located between the upper oil layer and the lower oil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223365693.3U CN218882166U (en) | 2022-12-15 | 2022-12-15 | Layered sand prevention layered oil production pipe column of electric pump well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223365693.3U CN218882166U (en) | 2022-12-15 | 2022-12-15 | Layered sand prevention layered oil production pipe column of electric pump well |
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| Publication Number | Publication Date |
|---|---|
| CN218882166U true CN218882166U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223365693.3U Active CN218882166U (en) | 2022-12-15 | 2022-12-15 | Layered sand prevention layered oil production pipe column of electric pump well |
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| CN (1) | CN218882166U (en) |
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- 2022-12-15 CN CN202223365693.3U patent/CN218882166U/en active Active
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