CN216714373U - Whole-course visual horizontal well filling sand prevention simulation test device - Google Patents
Whole-course visual horizontal well filling sand prevention simulation test device Download PDFInfo
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- CN216714373U CN216714373U CN202123254877.8U CN202123254877U CN216714373U CN 216714373 U CN216714373 U CN 216714373U CN 202123254877 U CN202123254877 U CN 202123254877U CN 216714373 U CN216714373 U CN 216714373U
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Abstract
The utility model discloses a whole-course visible horizontal well filling sand prevention simulation test device, which relates to the technical field of horizontal well filling sand prevention simulation test devices and comprises a visible transparent window simulation shaft and a circulating filling device, wherein the visible transparent window simulation shaft comprises a plurality of transparent window casing pipe short sections and casing pipe blind pipe short sections which are sequentially connected, the head end of the visible transparent window simulation shaft is connected with a four-way filling joint, and the tail end of the visible transparent window simulation shaft is connected with a casing pipe plug; a plurality of observation ports are arranged on the transparent window casing pipe short section, window glass is detachably arranged on the observation ports, a plurality of permeation holes are arranged on the casing pipe blind pipe short section, and valves are arranged on the plurality of permeation holes; a filling sand prevention pipe column is arranged in the visible transparent window simulation shaft, the upper end of the filling sand prevention pipe column is communicated with the upper interface of the four-way filling joint, and the circulating filling equipment is respectively connected with the upper interface and the side interface of the four-way filling joint; the device is provided with a plurality of high-pressure window observation ports, and the whole filling process is visible; the window glass of the observation port is made of high-pressure explosion-proof glass, and the compressive strength can reach 20 MPa.
Description
Technical Field
The utility model relates to the technical field of horizontal well filling sand prevention simulation test devices, in particular to a whole-course visible horizontal well filling sand prevention simulation test device.
Background
In the process of horizontal well filling and sand prevention, because the process of horizontal well filling and sand prevention is complex, the difficulty of finding the optimal sand prevention construction process is very high. In order to improve the filling rate and the sand prevention effect of the horizontal well, construction parameters are optimized, and various major companies or organizations at home and abroad start research work of horizontal well filling sand prevention by developing simulation test devices, but the simulation test devices under the existing level always have 3 limitations: 1. the filling process is invisible, and the running track and the filling condition of the sand in the shaft cannot be observed; 2. the size of a shaft is short, the length of the existing horizontal test device is generally about 10 meters, and the distance of the horizontal section of most horizontal wells is far greater than the length, so that the long-size simulation filling test cannot be completed; 3. the test pressure is small, the maximum test pressure of most devices is not more than 8MPa, and the filling effect of the horizontal well under the actual construction pressure is difficult to simulate. The simulation device is easy to cause large errors in the test process and the actual construction process, so that the test data is inaccurate and the reference value is lost.
In order to make up for the limitations, a brand-new horizontal well filling sand prevention simulation test device is urgently needed to be developed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a whole-course visual horizontal well filling sand prevention simulation test device.
The technical scheme of the utility model is as follows: a whole-course visible horizontal well filling sand prevention simulation test device comprises an image monitoring system, a visible transparent window simulation shaft and circulating filling equipment, wherein the image monitoring system comprises a plurality of cameras;
the visual transparent window simulation shaft comprises a plurality of transparent window casing pipe short sections and casing blind pipe short sections which are sequentially connected, and the transparent window casing pipe short sections and the casing blind pipe short sections are detachably connected through a casing coupling; the head end of the visual transparent window simulation shaft is connected with a four-way filling joint, and the tail end of the visual transparent window simulation shaft is connected with a casing pipe plug; the transparent window casing pipe short section is provided with a plurality of observation ports, window glass is detachably mounted on the observation ports, and the window glass is high-pressure explosion-proof glass with the compressive strength of more than or equal to 20 MPa; a plurality of permeation holes are formed in the short section of the casing blind pipe, and valves are mounted on the plurality of permeation holes; a filling sand-prevention pipe column is arranged in the visual transparent window simulation shaft, and the upper end of the filling sand-prevention pipe column is communicated with an upper interface of the four-way filling joint;
the circulating filling equipment is respectively connected with the upper interface and the side interface of the four-way filling joint, and the image monitoring system is arranged on one side of the visual transparent window simulation shaft and is just opposite to a row of observation ports.
Preferably, two observation ports are arranged on the transparent window casing pipe nipple, and the window glass is fastened on the observation ports through a gland.
Preferably, the system also comprises a data acquisition and processing system, wherein the data acquisition and processing system comprises a plurality of pressure sensors, and each pressure sensor is installed in the transparent window casing short section.
Preferably, the length of the visual transparent window simulating the shaft is more than or equal to 100 m.
Preferably, the nominal diameters of the transparent window casing short joint and the casing blind pipe short joint are both 139.7 mm.
Preferably, the image monitoring system comprises three mobile cameras.
Compared with the prior art, the utility model has the following advantages:
the device is provided with a plurality of high-pressure window observation ports, and the whole filling process is visible; the window glass used by the observation port is made of high-pressure explosion-proof glass, the compressive strength can reach 20MPa, the filling test pressure is greatly improved, and the filling effect of the horizontal well under the actual construction pressure can be simulated to the maximum extent; the total length of the visual transparent window simulation shaft reaches 100 meters, the length and the size are superior to other test devices at home and abroad, and the filling simulation test of a horizontal well in most size ranges can be completed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a transparent window casing nipple;
FIG. 3 is a schematic structural diagram of a casing blind pipe nipple.
In the figure: 1. visual transparent window simulation pit shaft, 2, transparent window casing nipple joint, 201, viewing aperture, 3, casing blind pipe nipple joint, 301, infiltration hole, 4, casing coupling, 5, four-way packing joint, 501, go up the interface, 502, side interface, 6, casing plug, 7, window glass, 8, gland, 9, valve, 10, packing sand control tubular column, 11, circulation packing equipment, 12, image monitoring system, 13, the camera, 14, data acquisition and processing system, 15, pressure sensor.
Detailed Description
The utility model is further illustrated below with reference to the figures and examples.
Example one
Referring to fig. 1, the whole-course visible horizontal well filling sand prevention simulation test device comprises an image monitoring system 12, a visible transparent window simulation shaft 1 and a circulating filling device 11;
the visual transparent window simulation shaft 1 comprises a plurality of transparent window casing pipe short sections 2 and casing blind pipe short sections 3 which are sequentially connected, the transparent window casing pipe short sections 2 and the casing blind pipe short sections 3 are detachably connected through casing couplings 4, and the nominal diameters of the transparent window casing pipe short sections 2 and the casing blind pipe short sections 3 are 139.7 mm; the head end of the visual transparent window simulation shaft 1 is connected with a four-way filling joint 5, and the tail end is connected with a casing pipe plug 6; the transparent window casing pipe nipple 2 is provided with a plurality of observation ports 201, window glass 7 is detachably arranged on the observation ports 201, and the window glass 7 is made of high-pressure explosion-proof glass with the compression strength of more than or equal to 20MPa and the thickness of the glass is 35 mm; referring to fig. 3, in order to simulate the permeability of the bottom layer, a plurality of permeation holes 301 are arranged on a plurality of specific casing blind pipe short sections 3, valves 9 are arranged on the plurality of permeation holes 301, and different permeabilities of different bottom layers can be simulated by adjusting the opening degrees of the valves 9; a filling sand prevention pipe column 10 is arranged in the visual transparent window simulation shaft 1, and the upper end of the filling sand prevention pipe column 10 is communicated with an upper connector 501 of the four-way filling joint 5;
circulating filling equipment 11 the circulating filling equipment 11 consists of a 700-type pump truck, a 2 m-capacity liquid storage tank and a sand filling funnel, wherein the pump truck is respectively connected with an upper interface 501 and a side interface 502 of the four-way filling connector 5; the image monitoring system 12 comprises three mobile cameras 13, which are installed on one side of the visual transparent window simulated shaft 1 and are opposite to a row of observation ports 201, and are responsible for recording the images of the whole filling process.
Still include data acquisition and processing system 14, data acquisition and processing system 14 includes a plurality of pressure sensor 15, all installs a pressure sensor 15 in every transparent window casing nipple 2, can gather the pressure data of every transparent window casing nipple 2 department in real time.
The using and operating steps of the device are as follows:
firstly, the visual transparent window simulation well shaft 1 is assembled, the filling sand control pipe column 10 is put into the assembled visual transparent window simulation well shaft 1, and then the four-way filling joint 5 is connected with the visual transparent window simulation well shaft 1 through threads.
Before the filling test, the circulating filling equipment 11 is connected with an upper interface 501 of the four-way filling connector 5, the circulating filling equipment 11 and the data acquisition and processing system 14 are started, clear water is injected into the visual transparent window simulation shaft 1, the sealing capability test is carried out on the visual transparent window simulation shaft 1, the test pressure is 20MPa, the pressure stabilization time is 10min, the pressure drop is less than or equal to 0.5MPa, and the filling test is carried out after the pressure test is qualified.
During a filling test, the circulating filling equipment 11, the data acquisition and processing system 14 and the image monitoring system 12 are started, sand carrying liquid with ultra-low density proppant is injected into the filling sand prevention pipe column 10 through the upper interface 501 of the four-way filling joint 5, the sand ratio is increased to 10% from 5% along with continuous pump injection, and the pump pressure is increased in steps from 0-2-4-6-8 MPa; when the pump pressure reaches 8MPa, stopping adding sand, starting to replace the volume liquid amount of the filling sand control pipe column 10, gradually filling the annular space of the filling sand control pipe column 10 and the visual transparent window simulation shaft 1 by using the ultra-low density proppant, discharging the sand carrying liquid from the side interface 502 of the four-way filling joint 5, and completing filling when the pump pressure slowly rises to 15 MPa; in the whole filling process, a tester can observe the filling condition through the window glass 7 at any time, and after filling is finished, pump injection is stopped, and sand washing is started.
When sand washing is performed in a backwashing mode, the circulating filling device 11, the data collecting and processing system 14 and the image monitoring system 12 are started, clear water is injected into the visual transparent window simulation shaft 1 through the side interface 502 of the four-way filling joint 5, along with continuous pump injection, the ultralow-density propping agent gradually enters the filling sand prevention pipe column 10 from the annular space between the filling sand prevention pipe column 10 and the visual transparent window simulation shaft 1, then the ultralow-density propping agent is discharged from the upper interface 501 of the four-way filling joint 5, liquid to be discharged becomes clear water, when no sand is discharged, the backwashing sand washing is finished, the pump injection is stopped, and the test is finished.
The device is provided with a plurality of high-pressure window observation ports 201, and the whole filling process is visible; the window glass 7 used by the observation port 201 is made of high-pressure explosion-proof glass, the compressive strength can reach 20MPa, the filling test pressure is greatly improved, and the filling effect of the horizontal well under the actual construction pressure can be simulated to the greatest extent.
Example two
As a preferred embodiment of the present invention, the present embodiment optimizes the structure of the transparent window casing short section 2 on the basis of the first embodiment, specifically:
referring to fig. 2, in the present embodiment, two observation ports 201 are provided on the transparent window casing short section 2, and the window glass 7 is fastened on the observation ports 201 through a gland 8; after the filling sand control simulation test is finished, the damaged window glass 7 can be quickly replaced by disassembling the gland 8; when the shearing pin on the packing sand control tubular column 10 is changed, the change can be completed only by disassembling the gland 8 through the observation port 201, the visual transparent window simulation shaft 1 is not required to be disassembled and assembled, and the workload is effectively reduced.
EXAMPLE III
As a preferred embodiment of the present invention, in this embodiment, the length setting of the visual transparent window simulated wellbore 1 is optimized on the basis of the second embodiment, specifically:
in the embodiment, the length of the visual transparent window simulation shaft 1 is more than or equal to 100m, the length and the size are superior to other test devices at home and abroad, and the filling simulation test of the horizontal well in most size ranges can be completed.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention, and the contents of the changes still fall within the scope of the present invention.
Claims (6)
1. The utility model provides a whole visual horizontal well packing sand control analogue test device, includes image monitoring system, image monitoring system includes many cameras, its characterized in that: the visual transparent window simulation well shaft and the circulating filling equipment are also included;
the visual transparent window simulation shaft comprises a plurality of transparent window casing pipe short sections and casing blind pipe short sections which are sequentially connected, and the transparent window casing pipe short sections and the casing blind pipe short sections are detachably connected through a casing coupling; the head end of the visual transparent window simulation shaft is connected with a four-way filling joint, and the tail end of the visual transparent window simulation shaft is connected with a casing pipe plug; the transparent window casing pipe nipple is provided with a plurality of observation ports, window glass is detachably mounted on the observation ports, and the window glass is high-pressure explosion-proof glass with the compressive strength of more than or equal to 20 MPa; a plurality of permeation holes are formed in the short section of the casing blind pipe, and valves are mounted on the plurality of permeation holes; a filling sand-proof pipe column is arranged in the visual transparent window simulation shaft, and the upper end of the filling sand-proof pipe column is communicated with an upper interface of the four-way filling joint;
the circulating filling equipment is respectively connected with the upper interface and the side interface of the four-way filling joint, and the image monitoring system is arranged on one side of the visual transparent window simulation shaft and is just opposite to a row of observation ports.
2. The whole-course visual horizontal well filling sand control simulation test device according to claim 1, characterized in that: two observation ports are arranged on the transparent window casing pipe nipple, and the window glass is fastened on the observation ports through a gland.
3. The whole-course visual horizontal well filling sand control simulation test device according to claim 1, characterized in that: still include data acquisition and processing system, data acquisition and processing system includes a plurality of pressure sensor, every all install a pressure sensor in the transparent window casing nipple joint.
4. The whole-course visual horizontal well filling sand control simulation test device according to claim 1, characterized in that: the length of the visual transparent window simulation shaft is more than or equal to 100 m.
5. The whole-course visual horizontal well filling sand control simulation test device according to claim 1, characterized in that: the nominal diameters of the transparent window casing pipe short section and the casing blind pipe short section are both 139.7 mm.
6. The whole-course visual horizontal well filling sand control simulation test device according to claim 1, characterized in that: the image monitoring system comprises three mobile cameras.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123254877.8U CN216714373U (en) | 2021-12-23 | 2021-12-23 | Whole-course visual horizontal well filling sand prevention simulation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123254877.8U CN216714373U (en) | 2021-12-23 | 2021-12-23 | Whole-course visual horizontal well filling sand prevention simulation test device |
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| Publication Number | Publication Date |
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| CN216714373U true CN216714373U (en) | 2022-06-10 |
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| CN202123254877.8U Active CN216714373U (en) | 2021-12-23 | 2021-12-23 | Whole-course visual horizontal well filling sand prevention simulation test device |
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2021
- 2021-12-23 CN CN202123254877.8U patent/CN216714373U/en active Active
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