CN209780873U - Variable well-inclination-angle thickened oil steam huff-puff gravel packing sand prevention effect evaluation device - Google Patents
Variable well-inclination-angle thickened oil steam huff-puff gravel packing sand prevention effect evaluation device Download PDFInfo
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- CN209780873U CN209780873U CN201920069427.5U CN201920069427U CN209780873U CN 209780873 U CN209780873 U CN 209780873U CN 201920069427 U CN201920069427 U CN 201920069427U CN 209780873 U CN209780873 U CN 209780873U
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Abstract
the utility model discloses a variable well head angle viscous crude steam is taken in and send out gravel pack sand control effect evaluation device. The device mainly comprises an autoclave body, a rotating bracket, a measuring system, a steam generator and a data acquisition system; a sand control pipe is sleeved in the autoclave body, and a hollow structure formed between the sand control pipe and the whole body of the autoclave body is a simulated reservoir sand filling inner mold; liquid inlet ports are arranged on two sides of the outer wall of the upper part of the whole kettle body; a liquid outlet is arranged on the kettle body base and is connected with the groove on the kettle body base; the high-pressure kettle body is supported by a rotary bracket; the measuring system comprises a pressure sensor and a flowmeter; the outlet of the steam generator is connected to the liquid inlet interface, and the flow meter is arranged on a pipeline between the steam generator and the liquid inlet interface; the inlet of the steam generator is connected with a liquid storage tank; the data acquisition system collects data measured by the measurement system. The utility model discloses can simulate the productivity change law of gravel packing sand control in-process under the different well oblique angle states, provide certain basic data for the development of on-the-spot directional well and support.
Description
Technical Field
The utility model relates to a variable well oblique angle viscous crude steam is taken in and send out gravel packing sand control effect and is evaluated device belongs to oil engineering well completion sand control technical field.
Background
With the continuous development of offshore oil and gas fields in China, the development of most of high-quality oil and gas fields is approaching to maturity, the development of thin-layer heavy oil sandstone is concerned more and more, and how to more closely excavate the exploitation potential of the oil reservoir and obtain the maximum recovery ratio at the minimum cost is one of the challenges facing at present. The exploitation of the reservoir with the characteristics mainly has the following problems: (1) the reservoir has uneven distribution, more thin layers, high shale content and extremely obvious sand-shale interbed, and the sand-shale interbed has increased the sand control difficulty. (2) The high-viscosity thick oil has poor fluidity, and the purpose of production is achieved by carrying out steam huff-puff viscosity reduction for multiple rounds, but the steam huff-puff process has obvious influence on a reservoir stratum and a gravel packing layer, and the integrity of the gravel packing is directly related to the sand control effect and is a key factor for preventing sand failure or not. (3) High shale content often causes severe blockage of the entire sand control pipe and gravel pack, and the productivity is drastically reduced. Therefore the utility model discloses an establish one set of viscous crude steam and huff and puff gravel packing sand control effect evaluation device and experimental method and solve this difficult problem.
aiming at the problems, the prior sand control device mainly has the following defects: 1) the method mainly aims at the characteristics that a sand-mud interaction reservoir cannot be quantitatively simulated for a uniform reservoir; 2) for directional well gravel packing, the influence rule of the change of the well inclination angle on gravel packing sand prevention cannot be quantitatively evaluated; 3) for the sand control problem in the heavy oil steam injection exploitation, a field actual process of 'steam injection, soaking and steam discharge' which is repeatedly carried out for multiple times is not simulated, and the sand control failure problem caused by the migration of a stratum and a gravel layer in the process cannot be evaluated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a variable well head angle viscous crude steam is taken in and send out gravel packing sand control effect evaluation device.
the utility model provides a variable well head angle viscous crude steam huff and puff gravel pack sand control effect evaluation device, it includes autoclave body, runing rest, measurement system, steam generator and data acquisition system;
the autoclave body comprises an autoclave body base, an autoclave body and an autoclave body upper cover; a sand control pipe is sleeved in the autoclave body, and a hollow structure formed between the sand control pipe and the whole body of the autoclave body is a simulated reservoir sand filling inner mold; liquid inlet ports are arranged on two sides of the outer wall of the upper part of the whole kettle body; the kettle body base and the kettle body upper cover are respectively provided with a groove which is respectively communicated with the bottom of the sand control pipe and the top of the sand control pipe, the radius of the groove on the kettle body base is larger than the radius of the bottom of the sand control pipe, and the radius of the groove on the kettle body upper cover is larger than the radius of the top of the sand control pipe; the kettle body upper cover is provided with a plugging interface of the sand control pipe; a liquid outlet is formed in the kettle body base and is connected with the groove in the kettle body base; the outer side of the liquid outlet is connected with a water outlet pipeline;
the high-pressure kettle body is supported by the rotary bracket;
The measuring system comprises a pressure sensor and a flow meter; the flowmeter is connected to the liquid inlet interface; the pressure sensor is connected to the water outlet pipeline;
the outlet of the steam generator is connected to the liquid inlet interface, and the flow meter is arranged on a pipeline between the steam generator and the liquid inlet interface; the inlet of the steam generator is connected with a liquid storage tank;
The data acquisition system collects data measured by the measurement system.
in the device, the inside of the simulation reservoir sand filling inner die is arranged in the autoclave body in an up-and-down stacking mode; the simulated reservoir sand filling inner die is a die with a certain annular space and composed of 2 cylindrical steel sheets with different radiuses, the two cylindrical steel sheets are welded and fixed through an inner support, and the annular space structure inside the simulated reservoir sand filling inner die can simulate a reservoir through sand filling in an experiment;
The outer wall of the simulated reservoir sand filling inner die is matched with the inner wall of the kettle body, and a space formed between the inner wall of the simulated reservoir sand filling inner die and the sand control pipe is a simulated actual annulus; when the device is used, the annular space can be filled with a gravel layer with a certain size and thickness before an experiment, and the sand control mode of site gravel filling and well completion is simulated.
regular round small holes are formed in the inner wall and the outer wall of the simulated reservoir sand filling inner die, so that a good seepage channel is provided;
a layer of sand baffle plate with certain seepage capability is welded at the bottom of each simulated reservoir sand filling inner die; when the device is used, sandstones with different grain diameters and different argillaceous contents can be respectively filled in each sand filling inner die layer, and the characteristic of poor heterogeneity of the reservoir layer is simulated through different grain diameters and argillaceous contents of the sandstones between the horizontal layers.
In the device, the liquid inlet interface enters the high-pressure kettle body through the screw holes on the periphery of the kettle body and is in contact with the simulation reservoir sand filling inner mold.
in the above device, the rotating bracket includes a base, a rotating shaft, a shaft seat, a vertical pipe and a sliding wheel; the base is arranged below the high-pressure kettle body; rotating shafts are inserted into two sides of the middle part of the high-pressure kettle body; the other end of the rotating shaft is provided with a shaft seat; two sides of the high-pressure kettle body are provided with vertical pipes which are connected with the rotating shaft through the shaft seats, and the other ends of the vertical pipes are connected to the base; a plurality of riser seats are arranged below the riser, and the sliding wheels are arranged at the corners of the riser seats.
further, the number of the riser seats may be 4.
In the device, the plugging interface of the sand control pipe is detachably connected with the kettle body upper cover;
a plurality of screw holes, and bolts and screw buckles matched with the screw holes are arranged on the kettle body upper cover and the kettle body bottom;
The plugging interface of the sand control pipe is fixed through the screw hole on the kettle body upper cover;
The water outlet pipeline is detachably connected with the liquid outlet and is connected with the liquid outlet through a screw hole at the bottom of the kettle body.
furthermore, there are 12 screw holes at cauldron body upper cover edge, fix and seal through 12 the same bolt and spiral shell knot.
In the device, the kettle body upper cover is in a double-cylinder shape;
the inner diameter and the outer diameter of the kettle upper cover are respectively the same as the inner diameter and the outer diameter of the kettle body;
a circle of rubber ring is arranged on the inner wall of the upper cover of the kettle body, and the rubber ring is positioned on a groove at the edge of the inner wall of the upper cover of the kettle body and can be used for fixing and sealing the whole kettle body; and a circular groove is formed on the inner end surface of the upper cover of the kettle body, and the radius of the circular groove is larger than that of the top of the sand control pipe, so that the sand control pipe is fixed.
In the device, a rubber gasket is arranged in a groove on the kettle body base, and the bottom of the sand control pipe is sealed with the end face of the bottom of the whole kettle body through the rubber gasket.
In the device, the liquid inlet interface is provided with a valve a;
A valve b is arranged on the plugging interface;
And a valve c is arranged on the water outlet pipeline, and the valve c cannot be detached.
In the device, the liquid outlet on the kettle base is connected with the flow dividing head, the flow dividing head is connected with four inlets, and the inlets are provided with valves a. Specifically, the autoclave body is respectively connected with four inlets through flow dividing heads on two sides of the outer wall to inject high-temperature water vapor into the autoclave, a valve is connected in front of each inlet, the injection conditions between different layers can be controlled through the valves, and each inlet is separated by 200mm and corresponds to the length of the simulation reservoir sand filling inner mold.
In the above device, the data acquisition system includes a data acquisition card, acquisition software and a computer.
the method for evaluating the sand prevention effect experiment of the gravel packing of the thickened oil steam huff and puff by adopting the variable well-inclination angle thickened oil steam huff and puff gravel packing sand prevention effect evaluating device comprises the following steps;
1. Placing the sand filled stratum sand of the simulated reservoir sand filling inner mould into the autoclave body, simulating a loose sand mudstone reservoir with certain strength, granularity and argillaceous content characteristics, and arranging perforation pore canals with certain size and density in the reservoir;
2. Preparing sand-mud rock according to the mass of the simulated formation sand-bentonite with a certain mass ratio, and alternately putting prepared pure sand layers and sand-mud layers into a kettle body to form a simulated formation, wherein the simulated formation comprises simulated formation sand which consists of two components, namely a pure sand layer and a mud-rock layer; wherein the thickness ratio of the pure sand layer to the mudstone layer can be 1:1 or 1: 5;
3. Installing sand control pipes with different sizes in the middle of the high-pressure kettle body, filling a gravel layer with certain size and thickness in an annular space between the sand control pipes and a reservoir, wherein the sand control pipes can be wire-wound screen pipes, slotted screen pipes, metal mesh high-quality composite screen pipes and the like;
4. the rotation of the kettle body is controlled through the rotary supporting shaft, the inclination angle of the experimental kettle body is adjusted, and the included angle a between the central line of the kettle body and the plumb line can be selected to be 0-90 degrees;
5. generating steam (the highest temperature can reach 300 ℃) at a certain temperature by using a steam generator, checking data signals of a flow meter and a pressure sensor, starting to inject the steam after the parameters of a signal acquisition system are normal, observing the pressure change of the steam, closing all inlet and outlet pipelines after the pressure rises to the experimental set pressure, stewing at different time, and recording the pressure of the stewed well;
6. Opening an outlet valve to discharge steam after the well stewing is completed, collecting discharge pressure in the process, collecting sand produced at the outlet, and testing the sand grain size range;
7. Repeating the experiment steps 5 and 6, and simulating the field multi-turn steam huff and puff process;
8. According to the flow and the pressure measured by the experiment, the permeability of simulated strata, gravel packing layers and sand prevention pipe sand blocking media in different experimental stages is calculated, the change curves of the flow, the pressure and the permeability along with time and different steam injection rounds are drawn, the migration condition of the stratum sand and the gravel layer in the steam injection process is analyzed, the integrity of the gravel packing layers is judged, and the productivity change rule and the sand prevention effect under different experimental conditions are further evaluated.
the utility model has the advantages of it is following:
1. during the experiment, stratum sands with different mud contents and different grain diameters can be filled, a certain degree of cementing agent is added to simulate sandstone reservoirs with different strengths, sand-mud-rock layering can be carried out on the simulated stratum according to the characteristics of the actual reservoir, the stratum with poor actual heterogeneity is simulated, and the simulation experiment of blocking of sand prevention pipes and gravel layers under different conditions is carried out. 2. When the reservoir is manufactured, a mold can be used for forming perforation tunnels with certain size and density in the reservoir in advance, gravels are filled, the well completion state of the reservoir during gravel filling or fracturing filling is simulated, and the migration states of the reservoir and the gravels and the influence rule of the migration states on the sand prevention effect and the productivity during multiple rounds of steam huff and puff are researched. 3. The angle of the high-pressure kettle body can be automatically adjusted in the experimental process, the productivity change rule in the gravel filling and sand prevention process under different well inclination angle states can be simulated, and certain basic data support is provided for the development of the field directional well.
Drawings
FIG. 1 is the utility model discloses thickened oil steam huff and puff gravel pack sand control effect evaluation device flow chart.
the various labels of FIG. 1 are as follows:
1, end cover decompression opening and outlet; 2, covering the kettle body; 3, a sand control pipe; 4, an autoclave body; 4.4 liquid inlet interface; 5. 15, simulating a reservoir sand filling inner mold; 15.1 simulating formation sand; 6, rotating the bracket; 6.1 rotating shaft; 6.2 a riser; 6.3 vertical tube seats; 6.4 a base; 6.5 sliding wheels; 7, rotating the angle adjusting frame of the kettle body; 7.1 hand wheel; 8 an inlet pressure sensor; 9 a splitter valve at the inlet of the kettle body; 10 a data acquisition system (comprising a data acquisition card, acquisition software and a computer); 11 flow test pipeline; 11.1 reducing interface; 12 a flow meter; 13 a steam generator; 14 a liquid storage tank; 16 an inlet line; 17. 17.1 pressure sensor access line and extension device.
FIG. 2 is a view showing the internal structure of a high-pressure autoclave in the experimental apparatus.
the respective labels of fig. 2 are as follows:
4, an autoclave body; 2-2 simulating a reservoir; 2-3 simulating perforation tunnels; 2-4 sand blocking medium layers on the outer walls of the sand prevention pipes; 2-5 gravel packing; 4.4 liquid inlet interface; 2-7 lower sealing ring; 2-8 of sand control pipe; 2-9 liquid outlets.
FIG. 3 is a structural diagram of a rotary bracket of a high-pressure kettle body in the experimental device.
FIG. 3 is labeled as follows:
1, a sand control pipe; 4, an autoclave body; 6.2 a riser; 6.3 vertical tube seats; 6.4 a base; 6.5 sliding wheels.
FIG. 4 is a schematic view of the upper cover of the autoclave body in the experimental apparatus.
FIG. 4 is labeled as follows:
2.1, the inner wall of the kettle body; 2.2 simulating reservoir sand filling inner molds (same as 5, 15 and 15.1); 2.3 the outer wall of the sand control pipe.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, but they are not to be construed as limiting the invention, and are presented by way of example only, and the advantages of the invention will become more apparent and can be easily understood by description.
as shown in figure 1, for the utility model discloses thickened oil steam huff and puff gravel pack sand control effect evaluation device. The device consists of an autoclave body 1, a rotating bracket 6, a measuring system, a steam generator 13 and a data acquisition system 10.
as shown in fig. 2, the autoclave body 2-1 comprises an autoclave body base, an autoclave body and an autoclave body upper cover; a sand control pipe 3 is sleeved in the high-pressure kettle body, and an annular hollow structure formed between the sand control pipe 3 (shown as the outer wall 2.3 of the sand control pipe in figure 4) and the inner wall of the high-pressure kettle body (shown as the inner wall 2.1 of the high-pressure kettle body in figure 4) is a simulated reservoir sand filling inner mold 5/15 (specifically, a simulated reservoir sand filling inner mold 2.2 shown in figure 4); liquid inlet ports 4.4 are arranged on two sides of the outer wall of the upper part of the autoclave body; a groove is respectively arranged on the autoclave body base and the autoclave body upper cover 2 and is respectively communicated with the bottom of the sand control pipe 3 and the top of the sand control pipe 3, the radius of the groove on the autoclave body base is larger than the radius of the bottom of the sand control pipe 3, and the radius of the groove on the autoclave body upper cover 2 is larger than the radius of the top of the sand control pipe 3; a plugging interface of the sand control pipe 3 is arranged on the kettle body upper cover 2; the high-pressure kettle base is provided with a liquid outlet 2-9 which is connected with the groove on the kettle base; the outer sides of the liquid outlets 2-9 are connected with a water outlet pipeline.
The high-pressure kettle body 4 is supported by a rotary bracket 6; the rotating bracket comprises a base 6.4, a vertical pipe seat 6.3, a rotating shaft 6.1, a vertical pipe 6.2 and a sliding wheel 6.5; a base 6.4 is arranged below the kettle body 4; a rotating shaft 6.1 is inserted into two sides of the middle part of the kettle body 4, and a shaft seat 6.1 is arranged at the tail part of the rotating bracket 6; the shaft seat 6.1 is positioned between the rotating bracket 6 and a vertical pipe 6.2 arranged below the rotating bracket; the vertical pipes 6.2 are positioned at two sides of the kettle body 4; vertical pipe seats 6.3 are arranged below the vertical pipes 6.2, the number of the vertical pipe seats 6.3 can be four, and sliding wheels 6.5 are arranged at the corners of each vertical pipe seat 6.3; the rotary bracket 6 is provided with a kettle body rotation angle adjusting frame 7, and the kettle body rotation angle adjusting frame 7 is provided with a hand wheel 7.1 for adjustment.
The liquid supply system comprises a steam generator 13 and a liquid storage tank 14.
the measuring system comprises a pressure sensor 8 and a flow meter 12; the flowmeter 12 is connected to the liquid inlet ports 2-6; the pressure sensor 8 is connected to a water outlet pipeline (namely a flow test pipeline 11 shown in fig. 1), and the flow test pipeline 11 is provided with a reducing interface 11.1; the outlet of the steam generator 13 is connected to the liquid inlet ports 2-6, and the flow meter 12 is arranged on a pipeline (namely an inlet pipeline 16 shown in figure 1) between the steam generator 13 and the liquid inlet ports 2-6; the inlet of the steam generator 13 is connected with a liquid storage tank 14. The pressure sensor 8 is also provided with a pressure sensor access pipeline and extension devices 17 and 17.1.
The data acquisition system collects the data measured by the measurement system and comprises a data acquisition card of the data acquisition system, acquisition software and a computer.
further, the inside of the simulated reservoir sand filling inner mold 5/15 is installed into the autoclave body in an up-and-down stacking mode; the simulated reservoir sand filling inner die 5/15 is a die with a certain annular space and composed of 2 cylindrical steel sheets with different radiuses, the two cylindrical steel sheets are welded and fixed through an inner support, and the annular space structure inside the simulated reservoir sand filling inner die is a simulated reservoir; as shown in fig. 2: the autoclave body 2-1 comprises a simulated reservoir 2-2, a simulated perforation pore passage 2-3, a sand blocking medium layer 2-4 on the outer wall of the sand prevention pipe, a gravel filling layer 2-5 and a sand prevention pipe body 2-8. The sand control pipe 3 is arranged in the kettle body 4; an annular structure formed between the outer wall of the sand control pipe 3 and the inner wall of the kettle body 4 simulates a reservoir sand filling inner mold 5/15, and simulated formation sand 15.1 is filled in the sand filling inner mold.
furthermore, the outer wall of the simulated reservoir sand filling inner mold 5/15 is matched with the inner wall of the whole kettle body, and the space formed between the inner wall of the simulated reservoir sand filling inner mold and the sand control pipe 3 is a simulated actual annulus; when the device is used, the annular space can be filled with a gravel layer with a certain size and thickness before an experiment, and the sand prevention mode of site gravel filling and well completion is simulated.
regular round small holes are formed in the inner wall and the outer wall of the simulated reservoir sand filling inner die, so that a good seepage channel is provided;
A layer of sand baffle plate with certain seepage capability is welded at the bottom of each simulated reservoir sand filling inner die; when the simulation reservoir sand filling mold is used, sandstones with different grain sizes and different mud contents can be respectively filled into the simulation reservoir sand filling inner mold of each layer, and the characteristic of poor heterogeneity of the reservoir is simulated through different grain sizes and mud contents of the sandstones between the horizontal layers.
further, the liquid inlet interface 2-6 enters the inside of the high-pressure kettle body 2-1 through a screw hole on the periphery of the kettle body and is in contact with the movable radial flow wall cover.
Furthermore, the plugging interface of the sand control pipe 3 is detachably connected with the kettle body upper cover 2;
A plurality of screw holes and bolts and screw buckles matched with the screw holes are respectively arranged on the kettle body upper cover 2 and the kettle body bottom;
the plugging interface of the sand control pipe 3 is fixed through a screw hole on the kettle body upper cover 2;
The water outlet pipeline is detachably connected with the liquid outlets 2-9 and is connected with the bottom screw hole of the kettle body.
further, there are 12 screw holes at cauldron body upper cover 2 edge, fix and seal through 12 the same bolt and spiro union.
further, the kettle body upper cover 2 is in a double-cylinder shape;
the inner diameter and the outer diameter of the kettle upper cover 2 are respectively the same as the inner diameter and the outer diameter of the kettle body;
A circle of rubber ring is arranged on the inner wall of the kettle body upper cover 2, and the rubber ring is positioned on a groove at the edge of the inner wall of the kettle body upper cover 2 and can fix and seal the whole kettle body 4; a circular groove is arranged on the inner end surface of the kettle body upper cover 2, and the radius of the circular groove is larger than the radius of the top of the sand control pipe 3, so that the sand control pipe 3 is fixed.
Further, a rubber gasket is arranged in a groove in the kettle body base, and the bottom of the sand control pipe 3 is sealed with the end face of the bottom of the whole kettle body through the rubber gasket.
further, a valve a is arranged on the liquid inlet interface 2-6;
A valve b is arranged on the plugging interface;
the water outlet pipeline is provided with a valve c which can not be disassembled.
further, liquid outlets 2-9 on the kettle base are connected with a flow dividing head, the flow dividing head is connected with four inlets, and the inlets are provided with valves a (shown as a kettle inlet flow dividing valve 9 in fig. 1). Specifically, the autoclave body is respectively connected with four inlets through flow dividing heads on two sides of the outer wall to inject high-temperature water vapor into the autoclave, a valve is connected in front of each inlet, the injection conditions between different layers can be controlled through the valves, the distance between every two inlets is 200mm, and the length of each inlet corresponds to the length of a simulated reservoir sand filling inner mold 5/15.
the method for evaluating the sand prevention effect experiment of the gravel packing of the thickened oil steam huff and puff by adopting the variable well-inclination angle thickened oil steam huff and puff gravel packing sand prevention effect evaluating device comprises the following steps;
1. placing the sand filled stratum sand of the simulated reservoir sand filling inner mould into the kettle body, simulating a loose sand shale reservoir with certain strength, granularity and argillaceous content characteristics, and arranging perforation pore canals with certain size and density in the reservoir;
2. preparing sand-mud rock according to the mass of the simulated formation sand-bentonite with a certain mass ratio, and alternately putting prepared pure sand layers and sand-mud layers into a kettle body to form a simulated formation, wherein the simulated formation comprises simulated formation sand which consists of two components, namely a pure sand layer and a mud-rock layer; wherein the thickness ratio of the pure sand layer to the mudstone layer can be 1:1 or 1: 5;
3. installing sand control pipes with different sizes in the middle of the high-pressure kettle body, filling a gravel layer with certain size and thickness in an annular space between the sand control pipes and a reservoir, wherein the sand control pipes can be wire-wound screen pipes, slotted screen pipes, metal mesh high-quality composite screen pipes and the like;
4. the rotation of the kettle body is controlled through the rotary supporting shaft, the inclination angle of the experimental kettle body is adjusted, and the included angle a between the central line of the kettle body and the plumb line can be selected to be 0-90 degrees;
5. generating steam (the highest temperature can reach 300 ℃) at a certain temperature by using a steam generator, checking data signals of a flow meter and a pressure sensor, starting to inject the steam after the parameters of a signal acquisition system are normal, observing the pressure change of the steam, closing all inlet and outlet pipelines after the pressure rises to the experimental set pressure, stewing at different time, and recording the pressure of the stewed well;
6. Opening an outlet valve to discharge steam after the well stewing is completed, collecting discharge pressure in the process, collecting sand produced at the outlet, and testing the sand grain size range;
7. Repeating the experiment steps 5 and 6, and simulating the field multi-turn steam huff and puff process;
8. according to the flow and the pressure measured by the experiment, the permeability of simulated strata, gravel packing layers and sand prevention pipe sand blocking media in different experimental stages is calculated, the change curves of the flow, the pressure and the permeability along with time and different steam injection rounds are drawn, the migration condition of the stratum sand and the gravel layer in the steam injection process is analyzed, the integrity of the gravel packing layers is judged, and the productivity change rule and the sand prevention effect under different experimental conditions are further evaluated.
Claims (10)
1. The utility model provides a variable well bevel angle viscous crude steam is taked in and send out gravel pack sand control effect evaluation device which characterized in that: the device comprises an autoclave body, a rotating bracket, a measuring system, a steam generator and a data acquisition system;
the autoclave body comprises an autoclave body base, an autoclave body and an autoclave body upper cover; a sand control pipe is sleeved in the autoclave body, and a hollow structure formed between the sand control pipe and the whole body of the autoclave body is a simulated reservoir sand filling inner mold; liquid inlet ports are arranged on two sides of the outer wall of the upper part of the whole kettle body; the kettle body base and the kettle body upper cover are respectively provided with a groove which is respectively communicated with the bottom of the sand control pipe and the top of the sand control pipe, the radius of the groove on the kettle body base is larger than the radius of the bottom of the sand control pipe, and the radius of the groove on the kettle body upper cover is larger than the radius of the top of the sand control pipe; the kettle body upper cover is provided with a plugging interface of the sand control pipe; a liquid outlet is formed in the kettle body base and is connected with the groove in the kettle body base; the outer side of the liquid outlet is connected with a water outlet pipeline;
The high-pressure kettle body is supported by the rotary bracket;
The measuring system comprises a pressure sensor and a flow meter; the flowmeter is connected to the liquid inlet interface; the pressure sensor is connected to the water outlet pipeline;
the outlet of the steam generator is connected to the liquid inlet interface, and the flow meter is arranged on a pipeline between the steam generator and the liquid inlet interface; the inlet of the steam generator is connected with a liquid storage tank;
The data acquisition system collects data measured by the measurement system.
2. the apparatus of claim 1, wherein: the inside of the simulation reservoir sand filling inner die is arranged in the high-pressure kettle body in an up-and-down stacking mode; the simulated reservoir sand filling inner die is a die with a certain annular space and composed of 2 cylindrical steel sheets with different radiuses, the two cylindrical steel sheets are welded and fixed through an inner support, and the annular space structure inside the simulated reservoir sand filling inner die can simulate a reservoir through sand filling in an experiment;
the outer wall of the simulated reservoir sand filling inner die is matched with the inner wall of the kettle body, and a space formed between the inner wall of the simulated reservoir sand filling inner die and the sand control pipe is a simulated actual annulus;
Regular round small holes are formed in the inner wall and the outer wall of the simulated reservoir sand filling inner die;
And a layer of sand baffle with certain seepage capability is welded at the bottom of each simulated reservoir sand filling inner die.
3. The apparatus of claim 2, wherein: the liquid inlet interface enters the high-pressure kettle body through screw holes on the whole body of the kettle body and is in contact with the simulation reservoir sand filling inner mold.
4. the apparatus of claim 1, wherein: the rotating bracket comprises a base, a rotating shaft, a shaft seat, a vertical pipe and a sliding wheel; the base is arranged below the high-pressure kettle body; rotating shafts are inserted into two sides of the middle part of the high-pressure kettle body; the other end of the rotating shaft is provided with a shaft seat; two sides of the high-pressure kettle body are provided with vertical pipes which are connected with the rotating shaft through the shaft seats, and the other ends of the vertical pipes are connected to the base; a plurality of riser seats are arranged below the riser, and the sliding wheels are arranged at the corners of the riser seats.
5. The apparatus of claim 1, wherein: the plugging interface of the sand control pipe is detachably connected with the kettle body upper cover;
A plurality of screw holes, and bolts and screw buckles matched with the screw holes are arranged on the kettle body upper cover and the kettle body bottom;
the plugging interface of the sand control pipe is fixed through the screw hole on the kettle body upper cover;
The water outlet pipeline is detachably connected with the liquid outlet and is connected with the liquid outlet through a screw hole at the bottom of the kettle body.
6. The apparatus of claim 1, wherein: the kettle body upper cover is in a double-cylinder shape;
The inner diameter and the outer diameter of the kettle upper cover are respectively the same as the inner diameter and the outer diameter of the kettle body;
a circle of rubber ring is arranged on the inner wall of the upper cover of the kettle body, and the rubber ring is positioned on a groove at the edge of the inner wall of the upper cover of the kettle body and can be used for fixing and sealing the whole kettle body; the inner end surface of the upper cover of the kettle body is provided with a circular groove, and the radius of the circular groove is larger than that of the top of the sand control pipe.
7. The apparatus of claim 6, wherein: and a rubber gasket is arranged in a groove on the kettle body base, and the bottom of the sand control pipe is sealed with the end face of the bottom of the whole kettle body through the rubber gasket.
8. the apparatus of claim 1, wherein: a valve a is arranged on the liquid inlet interface;
A valve b is arranged on the plugging interface;
And a valve c is arranged on the water outlet pipeline, and the valve c cannot be detached.
9. the apparatus of claim 1, wherein: the liquid outlet on the cauldron body base is connected with the reposition of redundant personnel head, reposition of redundant personnel head and four imports, be equipped with valve a in the import.
10. the apparatus of claim 1, wherein: the data acquisition system comprises a data acquisition card, acquisition software and a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920069427.5U CN209780873U (en) | 2019-01-16 | 2019-01-16 | Variable well-inclination-angle thickened oil steam huff-puff gravel packing sand prevention effect evaluation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920069427.5U CN209780873U (en) | 2019-01-16 | 2019-01-16 | Variable well-inclination-angle thickened oil steam huff-puff gravel packing sand prevention effect evaluation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209780873U true CN209780873U (en) | 2019-12-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485858A (en) * | 2020-05-09 | 2020-08-04 | 中国石油化工股份有限公司 | Variable well deviation and visual oil well sand prevention evaluation experimental device and method |
| CN114961665A (en) * | 2022-04-29 | 2022-08-30 | 中国地质大学（武汉） | Hydrate reservoir visual gravel packing simulation experiment system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485858A (en) * | 2020-05-09 | 2020-08-04 | 中国石油化工股份有限公司 | Variable well deviation and visual oil well sand prevention evaluation experimental device and method |
| CN114961665A (en) * | 2022-04-29 | 2022-08-30 | 中国地质大学（武汉） | Hydrate reservoir visual gravel packing simulation experiment system and method |
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