CN114075963A - Online acidizing experimental apparatus of fracture-cavity type oil reservoir - Google Patents
Online acidizing experimental apparatus of fracture-cavity type oil reservoir Download PDFInfo
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- CN114075963A CN114075963A CN202111561044.8A CN202111561044A CN114075963A CN 114075963 A CN114075963 A CN 114075963A CN 202111561044 A CN202111561044 A CN 202111561044A CN 114075963 A CN114075963 A CN 114075963A
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- 239000002253 acid Substances 0.000 claims abstract description 115
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 114
- 238000003756 stirring Methods 0.000 claims abstract description 102
- 230000020477 pH reduction Effects 0.000 claims abstract description 88
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 71
- 238000005192 partition Methods 0.000 claims description 36
- 238000002474 experimental method Methods 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000000243 solution Substances 0.000 description 17
- 239000011259 mixed solution Substances 0.000 description 9
- 150000007513 acids Chemical class 0.000 description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 125000005587 carbonate group Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to an online acidification experimental device for a fracture-cavity type oil reservoir, which comprises a bottom plate, a supporting block, a lifting mechanism, a first connecting block, a second connecting block, a third connecting block, a stirring box, a water pump, a first guide pipe, a second guide pipe and an acidification adjusting structure, wherein the bottom plate is provided with a first guide pipe and a second guide pipe; the lifting mechanism drives the stirring box and the water pump which are respectively fixed on the first sliding block and the third sliding block to move up and down, and drives the first guide pipe and the second guide pipe which are communicated with the water pump to move up and down when the water pump moves up and down; when the third conduit moves downwards and enters the through holes of the first conduit, the acid liquid nozzle at the lower end of the second conduit is communicated through the through holes on the fixed block, and then the second conduit continues to move downwards and enters the through holes of the second conduit until entering all the through holes of the conduit; the acidification adjusting mechanism adjusts different concentrations; according to the invention, through carrying out experiments on the fracture-cavity type oil reservoir and the acid with different concentrations, the data comparison of the fracture-cavity type oil reservoir with different concentrations can be effectively formed.
Description
Technical Field
The invention relates to the field of oilfield exploitation, in particular to an online acidification experimental device for a fracture-cavity type oil reservoir.
Background
Currently, carbonate reservoirs are an important type of reservoir, where more than about 60% of the global oil and gas resources are contained, while the proportion of fracture-cavity oil hidden in carbonate reservoirs exceeds 30%. Many of the foreign large oil and gas fields, such as the parker and yerz fields in the west of texas, mexico, the gold port field in the east of mexico, and the central east sauter arabia, iraq, iran, amann, syria, etc., are composed of carbonate fracture-cavity reservoirs. In recent years, the method also obtains some breakthrough progresses in exploration and development work of deep buried carbonate reservoirs in a Tarim basin, an Eldos basin and a Bohai Bay basin successively. Particularly, in a Tarim basin, a Tuhe oil field with the level of over hundred million tons is found, and the dominant oil reservoir is a carbonate fracture-cavity type oil reservoir of the lower Chongoleshan group. Therefore, the current research on carbonate fracture-cavity oil reservoirs is concerned by people.
The fracture-cavity oil reservoir is a compound oil-gas reservoir formed by spatially superposing a plurality of fracture-cavity units under the control of a fracture-cavity system formed by the tectonic-karst gyroid action. It has independent oil and gas system and irregular shape, and shows the characteristic of uneven oil enrichment of superposed connected sheets. Based on the special geological structure and fluid distribution characteristics of the fracture-cavity type oil reservoir, the main exploitation methods in the current development process are natural water drive and artificial water drive, a certain effect is achieved, but the recovery ratio is still low, and the research on the fracture-cavity type oil reservoir is very necessary.
The online acidizing experimental apparatus of current fracture-cavity type oil reservoir most is direct dilute the acid of certain concentration back direct with the oil phase contact and carry out the acidizing experiment, obtain corresponding data, do not carry out different concentration acid and fracture-cavity type oil reservoir and experiment, can not form the data contrast, the inaccurate condition of data often can appear in the experiment that does not have the contrast, bring the error for the experimental result, generally can not stir at the in-process of diluting acid, can lead to the acid dilution not abundant, carry out the inhomogeneous error that also can appear of concentration of laboratory acid, do not stir the condition that data error also can appear when acid contacts with the oil phase moreover.
Disclosure of Invention
Aiming at the problems in the prior art, the technical problems to be solved by the invention are as follows: how to provide a can carry out different concentration acid and fracture-cavity type oil reservoir and carry out the experimental apparatus that experiments.
In order to solve the technical problems, the invention adopts the following technical scheme: an online acidification experiment device for a fracture-cavity type oil reservoir comprises a bottom plate, a supporting block, a lifting mechanism, a first connecting block, a second connecting block, a third connecting block, a stirring box, a water pump, a first guide pipe, a second guide pipe and an acidification adjusting structure; the top of the bottom plate is vertically provided with a supporting block, and the bottom plate is fixedly connected with the supporting block; a first sliding groove is formed in the front side of the supporting block and is vertically arranged; the lifting mechanism comprises a first threaded rod, a first sliding block and a first motor; the first threaded rod is vertically arranged in the first sliding groove and is rotatably connected with the supporting block; the first sliding block is arranged in the first sliding groove, the first threaded rod penetrates through the first sliding block, and the first sliding block is in threaded connection with the first threaded rod; the upper end of the first threaded rod penetrates through the supporting block, the upper end of the first threaded rod is fixedly connected with an output shaft of a first motor, and the first motor is fixedly arranged at the top of the supporting block; the back of the first connecting block is fixedly connected with the front of the first sliding block, and the first connecting block is arranged in parallel with the bottom plate; a second connecting block is fixedly arranged on the bottom surface of the first connecting block and is perpendicular to the first connecting block; a third connecting block is fixedly arranged on the lower side surface of the second connecting block, and the third connecting block is arranged in parallel with the first connecting block; the bottom of the stirring box penetrates through the first connecting block, and the stirring box is fixedly arranged on the upper end face of the first connecting block; an acid inlet and a water inlet are respectively fixedly arranged at the top of the stirring box and are respectively communicated with the stirring box; the water pump is fixedly arranged on the upper end face of the third connecting block; the first guide pipe is vertically arranged on the upper end face of the water pump, the lower end of the first guide pipe is fixedly connected with the upper end face of the water pump, the lower end of the first guide pipe is communicated with a water inlet of the water pump, and the upper end of the first guide pipe is communicated with the lower end face of the stirring box; the lower end face of the water pump is fixedly provided with a second guide pipe, the upper end of the second guide pipe is connected with a water outlet of the water pump, the second guide pipe penetrates through the third connecting block, the second guide pipe is fixedly connected with the third connecting block, and an acid liquor nozzle is formed in the side wall of the lower end of the second guide pipe.
The acidification adjusting structure comprises an acidification box, a plurality of partition plates, a second rotating rod, a plurality of stirring rods, a plurality of fixed blocks and a plurality of acid outlets; the acidification box is fixedly arranged at the top of the bottom plate; the plurality of partition plates, the second rotating rod and the plurality of stirring rods are arranged in the acidification box; the plurality of partition plates are fixedly connected with the acidification box, the plurality of partition plates are parallel to the bottom of the acidification box, and the distance between every two adjacent partition plates is equal; the second rotating rod is vertically arranged in the acidification box, the upper end of the second rotating rod penetrates through the acidification box and is rotatably connected with the acidification box, the second rotating rod penetrates through the plurality of partition plates and is rotatably connected with the plurality of partition plates; a plurality of stirring rods are fixedly sleeved on the second rotating rod; the left side of the acidification box is fixedly connected with a plurality of fixing blocks, a plurality of vertical conduit through holes are formed in the upper ends of the fixing blocks, the conduit through holes are matched with the second conduit, the fixing blocks are respectively connected with the second conduit in a vertical sliding mode, and the conduit through holes and the second conduit are in the same vertical direction; through holes are respectively formed between the plurality of fixed blocks and the acidification box and are communicated with the conduit through holes; a plurality of acid outlets are fixedly connected to the right side of the acidification box, and one ends of the plurality of oil inlets are communicated with the acidification box; the plurality of fixing blocks and the plurality of acid outlets are respectively arranged at positions between the plurality of clapboards and the cavity enclosed by the acidification box.
According to the invention, a first threaded rod fixedly connected with a first motor is driven to rotate through the first motor, the first threaded rod rotates to drive a first sliding block connected with the first threaded rod through threads to slide up and down in a first sliding groove on a supporting block, the first sliding block drives a second connecting block and a third connecting block to slide in the vertical direction through a first connecting block fixedly connected with the first sliding block, so that a stirring box and a water pump which are respectively fixed on the first sliding block and the third sliding block are driven to move up and down, and when the water pump moves up and down, a first guide pipe and a second guide pipe which are communicated with the water pump are driven to move up and down; when the third conduit moves downwards and enters the through holes of the first conduit, the acid liquid nozzle at the lower end of the second conduit is communicated through the through holes on the fixed block, and then the second conduit continues to move downwards and enters the through holes of the second conduit until entering all the through holes of the conduit; acidizing fluid and water get into the agitator tank respectively from sour import and water inlet in, and mix in the agitator tank, then the mixed solution of water pump in with the agitator tank through first pipe is discharged, carry respectively in the cavity that encloses into to a plurality of baffles and acidizing case through the second pipe, through rotating the second dwang, the second dwang drives a plurality of puddlers rather than fixed connection and rotates, a plurality of puddlers stir the mixed solution in the cavity that a plurality of baffles and acidizing case enclose, the solution after the stirring is then discharged from a plurality of sour mouthful.
Preferably, the device also comprises a stirring structure; the stirring structure comprises a fourth connecting block, a third motor, a first rotating rod, a first stirring roller, a first belt wheel, a second belt wheel and a belt; the fourth connecting block is vertically arranged on the upper end surface of the first connecting block and is parallel to the supporting block; the shell of the third motor is fixedly connected with the rear side of the fourth connecting block; the upper end of the first rotating rod is fixedly connected with an output shaft of a third motor, and the first rotating rod is vertically arranged; the first rotating rod is provided with a first belt wheel, and the first belt wheel is fixedly connected with the first rotating rod; the first stirring roller is vertically arranged in the stirring box, the upper end of the first stirring roller penetrates out of the stirring box, and the first stirring roller is rotatably connected with the stirring box; the upper end of the first stirring roller is provided with a second belt wheel which is fixedly connected with the first stirring roller; the second belt wheel is connected with the first belt wheel through a belt. The first motor rotates, the output shaft of the first motor drives the first rotating rod fixedly connected with the first motor to rotate, the first rotating rod drives the first belt wheel fixedly connected with the first rotating rod to rotate, the first belt wheel drives the second belt wheel to rotate through a belt, then the second belt wheel drives the first stirring roller fixedly connected with the second belt wheel to rotate, the first stirring roller stirs and mixes the solution in the stirring box, and the mixing efficiency of the acid liquor and the water is further improved.
Preferably, the acidizing box further comprises a second motor, the second motor is fixedly arranged at the top of the acidizing box, and an output shaft of the second motor is fixedly connected with the upper end of the second rotating rod. The second motor action, the output shaft of second motor drive rather than fixed connection's second dwang rotate, and the second dwang drives rather than a plurality of puddlers of fixed connection and rotates, and a plurality of puddlers stir the mixed solution in the cavity that a plurality of baffles and acidizing case enclose, realize the automatic stirring in the acidizing case.
Preferably, the through hole between the fixing block and the acidification box is an L-shaped through hole. Through designing into "L" type with the through-hole, prevent that acid from staying in the through-hole for a long time, prevent acid corrosion through-hole, also can effectually prevent when stirring in the case to acidizing, the solution of acidizing incasement flows.
Preferably, the method further comprises a reaction structure; the reaction structure comprises a reaction box, a plurality of supporting plates, a plurality of reaction drawers, a plurality of grids, a plurality of conveying pipes and a plurality of third flow pumps; the reaction box is fixedly arranged at the upper end of the bottom plate; the supporting plates and the reaction drawers are arranged in the reaction box, the supporting plates are fixedly connected with the reaction box, the supporting plates are parallel to the bottom of the reaction box, and the distance between every two adjacent supporting plates is equal; the reaction drawers are respectively arranged in a cavity surrounded by the reaction box and the support plates; the reaction drawers are respectively connected with the reaction boxes in a sliding way; the reaction drawers are internally provided with grids respectively, the grids are horizontally arranged and fixedly connected with the reaction drawers, and the conveying pipes are provided with third flow pumps respectively; one ends of the conveying pipes are communicated with the acid outlets in a one-to-one correspondence mode, and the other ends of the conveying pipes are communicated with a cavity defined by the reaction boxes and the supporting plate in a one-to-one correspondence mode. And (3) drawing the reaction drawer, putting the object to be tested on a grid in the reaction drawer, closing the drawer, drawing the solution in the acidification box to the test object in the reaction drawers in a one-to-one correspondence manner by a third flow pump through a plurality of conveying pipes, reacting, and checking the reaction condition by pulling the reaction drawer.
Preferably, the transportation structure is further included; the transportation structure comprises an acid inlet pipe, a water inlet pipe, an acid inlet main branch pipe, a plurality of first flow pumps, a water inlet main branch pipe, a plurality of second flow pumps, a plurality of acid inlet branch pipes and a plurality of water inlet branch pipes; one end of the acid inlet pipe is communicated with the acid inlet, and one end of the water inlet pipe is communicated with one end of the water inlet; one end of the acid inlet main branch pipe is communicated with the acid inlet pipe, and the other end of the acid inlet main branch pipe is communicated with one end of the plurality of acid inlet branch pipes; the plurality of the acid inlet branch pipes are respectively provided with a first flow pump; one end of the water inlet main branch pipe is communicated with the water inlet pipe, and the other end of the water inlet main branch pipe is communicated with one end of the plurality of water inlet branch pipes; the plurality of water inlet branch pipes are respectively provided with a second flow pump; the water inlet branch pipes and the other ends of the acid inlet branch pipes are in one-to-one correspondence with cavities formed by the partition plates and the acidification box. The acid inlet main branch pipe and the water inlet main branch pipe are controlled in flow through a plurality of first flow pumps and a plurality of second flow pumps.
Preferably, the device also comprises an automatic control structure; the automatic control structure comprises a PLC and a plurality of concentration detectors; the signal acquisition ends of the concentration detectors are respectively arranged in a cavity surrounded by the plurality of partition plates and the acidification box in a one-to-one correspondence manner, and the signal output ends of the concentration detectors are connected with the PLC; and the signal output end of the PLC is respectively connected with the plurality of first flow pumps, the plurality of second flow pumps and the plurality of third flow pumps. And controlling the first flow pump, the second flow pump and the third flow pumps through the PLC according to the data collected by the concentration detectors, thereby realizing automatic control.
Compared with the prior art, the invention has at least the following advantages:
1. the acid with different concentrations is fully reacted with the experimental object. According to the invention, diluted acid is injected into each region in the acidification box through the lifting mechanism to carry out a contrast experiment, the first stirring roller is used for stirring, so that the acid is more fully diluted, the dilution speed is increased, and the reaction box is divided into a plurality of regions through a plurality of reaction drawers to carry out the contrast experiment, so that the acids with different concentrations are fully reacted with an experimental object.
2. Can effectively prevent the solution in the acidification tank from flowing out when stirring the acidification tank. According to the invention, the water pump is arranged to provide pressure, so that the acidification experiment is faster, the efficiency is improved, the acid is injected by aligning the acid liquid nozzle with the through hole, the through hole is designed to be bent, the acid is prevented from staying in the through hole for a long time, the through hole is prevented from being corroded by the acid, and the solution in the acidification tank can be effectively prevented from flowing out when the acidification tank is stirred.
Drawings
Fig. 1 is a schematic overall structure diagram of the embodiment.
Fig. 2 is an exploded view of the overall structure of the embodiment.
Fig. 3 is an exploded view of the acid-diluted structure of the example.
Fig. 4 is an exploded view of the lifting mechanism of the embodiment.
Fig. 5 is an exploded view of the acidification experiment box structure of the embodiment.
FIG. 6 is a sectional view of the acidification experiment box structure of the embodiment
FIG. 7 is a sectional view showing the structure of a reaction chamber according to an embodiment.
Fig. 8 is a connection diagram of the components of the embodiment.
In the figure: 1-bottom plate, 2-supporting block, 3-first sliding groove, 4-first sliding block, 5-first connecting block, 6-second connecting block, 7-third connecting block, 8-fourth connecting block, 9-water pump, 10-acidification box, 11-first motor, 12-second motor, 13-third motor, 14-stirring box, 15-acid inlet, 16-water inlet, 17-first stirring roller, 18-first conduit, 19-second conduit, 20-first rotating rod, 21-first threaded rod, 22-first pulley, 23-second pulley, 24-belt, 25-acid solution nozzle, 26-second rotating rod, 27-stirring rod, 28-partition plate, 29-fixed block, 30-acid outlet, 31-through hole, 32-reaction box, 33-support plate, 34-reaction drawer, 35-grid, 36-acid inlet pipe, 37-water inlet pipe, 38-acid inlet main branch pipe, 39-first flow pump, 40-water inlet main branch pipe, 41-second flow pump, 42-acid inlet branch pipe, 43-water inlet branch pipe, 44-transport pipe and 45-third flow pump.
Detailed Description
The present invention is described in further detail below.
In the present invention, 'front', 'rear', 'left', 'right', 'up', 'down' all refer to the orientation in fig. 1, wherein 'front' refers to being out with respect to the paper in fig. 1 and 'rear' refers to being in fig. 1. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-8, one embodiment of the present invention is provided: an online acidification experiment device for a fracture-cavity type oil reservoir comprises a bottom plate 1, a supporting block 2, a lifting mechanism, a first connecting block 5, a second connecting block 6, a third connecting block 7, a stirring box 14, a water pump 9, a first conduit 18, a second conduit 19 and an acidification adjusting structure; the top of the bottom plate 1 is vertically provided with a supporting block 2, and the bottom plate 1 is fixedly connected with the supporting block 2; a first sliding groove 3 is formed in the front side of the supporting block 2, and the first sliding groove 3 is vertically arranged; the lifting mechanism comprises a first threaded rod 21, a first sliding block 4 and a first motor 11; the first threaded rod 21 is vertically arranged in the first sliding groove 3, and the first threaded rod 21 is rotatably connected with the supporting block 2; the first sliding block 4 is arranged in the first sliding groove 3, the first threaded rod 21 penetrates through the first sliding block 4, and the first sliding block 4 is in threaded connection with the first threaded rod 21; the upper end of the first threaded rod 21 penetrates through the supporting block 2, the upper end of the first threaded rod 21 is fixedly connected with an output shaft of the first motor 11, and the first motor 11 is fixedly arranged at the top of the supporting block 2; the back of the first connecting block 5 is fixedly connected with the front of the first sliding block 4, and the first connecting block 5 is arranged in parallel with the bottom plate 1; a second connecting block 6 is fixedly arranged on the bottom surface of the first connecting block 5, and the second connecting block 6 is perpendicular to the first connecting block 5; a third connecting block 7 is fixedly arranged on the lower side surface of the second connecting block 6, and the third connecting block 7 is arranged in parallel with the first connecting block 5; the bottom of the stirring box 14 penetrates through the first connecting block 5, and the stirring box 14 is fixedly arranged on the upper end face of the first connecting block 5; the top of the stirring box 14 is respectively fixedly provided with an acid inlet 15 and a water inlet 16, and the acid inlet 15 and the water inlet 16 are respectively communicated with the stirring box 14; the water pump 9 is fixedly arranged on the upper end face of the third connecting block 7; the first guide pipe 18 is vertically arranged on the upper end face of the water pump 9, the lower end of the first guide pipe 18 is fixedly connected with the upper end face of the water pump 9, the lower end of the first guide pipe 18 is communicated with the water inlet 16 of the water pump 9, and the upper end of the first guide pipe 18 is communicated with the lower end face of the stirring box 14; a second guide pipe 19 is fixedly arranged on the lower end face of the water pump 9, the upper end of the second guide pipe 19 is connected with a water outlet of the water pump 9, the second guide pipe 19 penetrates through the third connecting block 7, the second guide pipe 19 is fixedly connected with the third connecting block 7, and an acid liquid nozzle 25 is formed in the side wall of the lower end of the second guide pipe 19.
The acidification adjusting structure comprises an acidification box 10, a plurality of partition plates 28, a second rotating rod 26, a plurality of stirring rods 27, a plurality of fixed blocks 29 and a plurality of acid outlets 30; the acidification box 10 is fixedly arranged at the top of the bottom plate 1; the plurality of partition plates 28, the second rotating rod 26 and the plurality of stirring rods 27 are arranged in the acidification box 10; the plurality of partition plates 28 are fixedly connected with the acidification box 10, the plurality of partition plates 28 are parallel to the bottom of the acidification box 10, and the distance between every two adjacent partition plates 28 is equal; the second rotating rod 26 is vertically arranged in the acidification tank 10, the upper end of the second rotating rod 26 penetrates through the acidification tank 10, the second rotating rod 26 is rotatably connected with the acidification tank 10, the second rotating rod 26 penetrates through the plurality of partition plates 28, and the second rotating rod 26 is rotatably connected with the plurality of partition plates 28; a plurality of stirring rods 27 are fixedly sleeved on the second rotating rod 26; a plurality of fixing blocks 29 are fixedly connected to the left side of the acidification box 10, a plurality of vertical conduit through holes are formed in the upper ends of the fixing blocks 29, the conduit through holes are matched with the second conduit 19, the fixing blocks 29 are respectively connected with the second conduit 19 in a vertical sliding mode, and the conduit through holes and the second conduit 19 are in the same vertical direction; through holes 31 are respectively formed between the plurality of fixed blocks 29 and the acidification box 10, and the through holes 31 are communicated with the conduit through holes; a plurality of acid outlets 30 are fixedly connected to the right side of the acidification box 10, and one ends of the plurality of oil inlets are communicated with the acidification box 10; the plurality of fixing blocks 29 and the plurality of acid outlets 30 are respectively arranged between the plurality of partition plates 28 and the cavity surrounded by the acidification box 10.
When the water pump is implemented specifically, the first motor 11 drives the first threaded rod 21 fixedly connected with the first motor to rotate, the first threaded rod 21 rotates to drive the first sliding block 4 fixedly connected with the first threaded rod to slide up and down in the first sliding groove 3 on the supporting block 2, the first sliding block 4 drives the second connecting block 6 and the third connecting block 7 to slide in the vertical direction through the first connecting block 5 fixedly connected with the first sliding block 4, and further drives the stirring box 14 and the water pump 9 respectively fixed on the first sliding block 4 and the third sliding block to move up and down, and when the water pump 9 moves up and down, the first guide pipe 18 and the second guide pipe 19 communicated with the water pump are driven to move up and down; when the third conduit moves downwards and enters the first conduit through hole, the acid liquid nozzle 25 at the lower end of the second conduit 19 is communicated through the through hole 31 on the fixed block 29, and then the second conduit 19 continues to move downwards and enters the second conduit through hole until all conduit through holes are reached; acidizing fluid and water get into agitator tank 14 in from acid import 15 and water inlet 16 respectively, and mix in agitator tank 14, then water pump 9 discharges the mixed solution in agitator tank 14 through first pipe 18, carry respectively in the cavity that becomes with acidizing case 10 a plurality of baffles 28 through second pipe 19, through rotating second dwang 26, second dwang 26 drives a plurality of puddlers 27 rather than fixed connection and rotates, a plurality of puddlers 27 stir the mixed solution in the cavity that a plurality of baffles 28 and acidizing case 10 enclose, the solution after the stirring is then discharged from a plurality of sour mouthful 30.
Further, the device also comprises a stirring structure; the stirring structure comprises a fourth connecting block 8, a third motor 13, a first rotating rod 20, a first stirring roller 17, a first belt wheel 22, a second belt wheel 23 and a belt 24; the fourth connecting block 8 is vertically arranged on the upper end surface of the first connecting block 5, and the fourth connecting block 8 is parallel to the supporting block 2; the shell of the third motor 13 is fixedly connected with the rear side of the fourth connecting block 8; the upper end of the first rotating rod 20 is fixedly connected with an output shaft of the third motor 13, and the first rotating rod 20 is vertically arranged; a first belt pulley 22 is arranged on the first rotating rod 20, and the first belt pulley 22 is fixedly connected with the first rotating rod 20; the first stirring roller 17 is vertically arranged in the stirring box 14, the upper end of the first stirring roller 17 penetrates out of the stirring box 14, and the first stirring roller 17 is rotatably connected with the stirring box 14; a second belt wheel 23 is arranged at the upper end of the first stirring roller 17, and the second belt wheel 23 is fixedly connected with the first stirring roller 17; the second pulley 23 is connected with the first pulley 22 through a belt 24. During specific implementation, the first motor 11 rotates, the output shaft of the first motor 11 drives the first rotating rod 20 fixedly connected with the first motor to rotate, the first rotating rod 20 drives the first belt pulley 22 fixedly connected with the first rotating rod to rotate, the first belt pulley 22 drives the second belt pulley 23 to rotate through the belt 24, then the second belt pulley 23 drives the first stirring roller 17 fixedly connected with the second belt pulley to rotate, the first stirring roller 17 stirs and mixes the solution in the stirring tank 14, and the efficiency of mixing acid liquor and water is further improved.
Further, still include second motor 12, second motor 12 is fixed to be located acidizing case 10 top, just the output shaft of second motor 12 and the upper end fixed connection of second dwang 26. During the concrete implementation, second motor 12 moves, and the output shaft of second motor 12 drives rather than fixed connection's second dwang 26 and rotates, and second dwang 26 drives rather than a plurality of puddlers 27 of fixed connection and rotates, and a plurality of puddlers 27 stir the mixed solution in the cavity that a plurality of baffles 28 and acidizing case 10 enclose, realize the automatic stirring in the acidizing case 10.
Further, a through hole 31 between the fixing block 29 and the acidification box 10 is an "L" shaped through hole 31. Through designing into "L" type with through-hole 31, prevent that acid from staying in through-hole 31 for a long time, prevent acid corrosion through-hole 31, also can effectually prevent when stirring in acidizing case 10, the solution in acidizing case 10 flows out.
Further, a reaction structure is also included; the reaction structure includes a reaction tank 32, a plurality of support plates 33, a plurality of reaction drawers 34, a plurality of grids 35, a plurality of transport pipes 44, and a plurality of third flow pumps 45; the reaction box 32 is fixedly arranged at the upper end of the bottom plate 1; the support plates 33 and the reaction drawers 34 are arranged in the reaction box 32, the support plates 33 are fixedly connected with the reaction box 32, the support plates 33 are parallel to the bottom of the reaction box 32, and the distance between every two adjacent support plates 33 is equal; the reaction drawers 34 are respectively arranged in a cavity surrounded by the reaction box 32 and the support plates 33; and the plurality of reaction drawers 34 are slidably connected with the reaction boxes 32 respectively; the reaction drawers 34 are internally provided with grids 35 respectively, the grids 35 are horizontally arranged, the grids 35 are fixedly connected with the reaction drawers 34, and the transport pipes 44 are provided with third flow pumps 45 respectively; one end of each of the plurality of transport pipes 44 is communicated with the plurality of acid outlets 30 in a one-to-one correspondence manner, and the other end of each of the plurality of transport pipes 44 is communicated with a cavity surrounded by the plurality of reaction boxes 32 and the support plate 33 in a one-to-one correspondence manner. In specific implementation, the reaction drawer 34 is pulled, an object to be tested is placed on the grid 35 in the reaction drawer 34, then the drawer is closed, the third flow pump 45 pumps the solution in the acidification tank 10 to the test object in the reaction drawer 34 through the plurality of transport pipes 44 in a one-to-one correspondence manner, then the reaction is performed, and the reaction condition can be checked by pulling the reaction drawer 34.
Further, a transportation structure is also included; the transportation structure comprises an acid inlet pipe 36, an water inlet pipe 37, an acid inlet main branch pipe 38, a plurality of first flow pumps 39, a water inlet main branch pipe 40, a plurality of second flow pumps 41, a plurality of acid inlet branch pipes 42 and a plurality of water inlet branch pipes 43; one end of the acid inlet pipe 36 is communicated with the acid inlet 15, and one end of the water inlet pipe 37 is communicated with one end of the water inlet 16; one end of the acid inlet main branch pipe 38 is communicated with the acid inlet pipe 36, and the other end of the acid inlet main branch pipe 38 is communicated with one end of the plurality of acid inlet branch pipes 42; the plurality of branched acid inlet pipes 42 are respectively provided with a first flow pump 39; one end of the main water inlet branch pipe 40 is communicated with the water inlet pipe 37, and the other end of the main water inlet branch pipe 40 is communicated with one end of the plurality of branch water inlet pipes 43; the plurality of water inlet branch pipes 43 are respectively provided with a second flow pump 41; the water inlet branch pipes 43 and the other ends of the acid inlet branch pipes 42 are in one-to-one correspondence with a cavity defined by the partition plates 28 and the acidification box 10. The respective structures are connected by an acid inlet pipe 36, a water inlet pipe 37, an acid inlet main branch pipe 38, a water inlet main branch pipe 40, a plurality of acid inlet branch pipes 42, and a plurality of water inlet branch pipes 43, and the flow rate of the acid inlet main branch pipe 38 and the water inlet main branch pipe 4 is controlled by a plurality of first flow pumps 39 and a plurality of second flow pumps 41.
Further, the automatic control device also comprises an automatic control structure; the automatic control structure comprises a PLC and a plurality of concentration detectors; the signal acquisition ends of the concentration detectors are respectively arranged in a cavity formed by the plurality of partition plates 28 and the acidification box 10 in a one-to-one correspondence manner, and the signal output ends of the concentration detectors are connected with the PLC; the signal output ends of the PLC are connected to a plurality of first flow pumps 39, a plurality of second flow pumps 41, and a plurality of third flow pumps 45, respectively. According to the data collected by the concentration detectors, the first flow pump 39, the second flow pump 41 and the third flow pumps 45 are controlled by the PLC, so that automatic control is realized.
The working principle of the online acidification experimental device for the fracture-cavity oil reservoir is as follows:
the first motor 11 drives a first threaded rod 21 fixedly connected with the first motor to rotate, the first threaded rod 21 rotates to drive a first sliding block 4 fixedly connected with the first threaded rod to slide up and down in a first sliding groove 3 on the supporting block 2, the first sliding block 4 drives a second connecting block 6 and a third connecting block 7 to slide in the vertical direction through a first connecting block 5 fixedly connected with the first sliding block 4, and further drives a stirring box 14 and a water pump 9 which are respectively fixed on the first sliding block 4 and the third sliding block to move up and down, and when the water pump 9 moves up and down, a first guide pipe 18 and a second guide pipe 19 which are communicated with the water pump are driven to move up and down; as the third conduit moves downwardly and into the first conduit opening, the acid jets 25 at the lower end of the second conduit 19 communicate through the openings 31 in the mounting block 29, and then the second conduit 19 continues to move downwardly into the second conduit opening until all conduit openings are accessed.
Acid liquor and water respectively enter the stirring tank 14 from the acid inlet 15 and the water inlet 16 and are mixed in the stirring tank 14, and then the water pump 9 discharges the mixed solution in the stirring tank 14 through the first conduit 18 and respectively conveys the mixed solution to a cavity formed by the plurality of partition plates 28 and the acidification tank 10 through the second conduit 19.
Stirring structure: first motor 11 rotates, and the output shaft of first motor 11 drives rather than the rotation of fixed connection's first rotation pole 20, and first rotation pole 20 drives rather than fixed connection's first band pulley 22 and rotates, and first band pulley 22 drives second band pulley 23 through belt 24 and rotates, then second band pulley 23 drives rather than fixed connection's first stirring roller 17 and rotates, and first stirring roller 17 stirs the mixture to the solution in agitator tank 14, further improves the efficiency that acidizing fluid and water mix.
Reaction structure: and (3) drawing the reaction drawer 34, putting the object to be tested on the grid 35 in the reaction drawer 34, closing the drawer, drawing the solution in the acidification box 10 to the test objects in the reaction drawer 34 one by the third flow pump 45 through the transport pipes 44, reacting, and checking the reaction condition by pulling the reaction drawer 34.
The transportation structure comprises: the acid liquid flows into the stirring tank 14 from one end of the acid inlet pipe 36 through the acid inlet 15, the water flows into the stirring tank 14 from one end of the water inlet pipe 37 through the water inlet 16, after stirring, the diluted acid is pumped out by the water pump through the first conduit, and the diluted acid is pumped into the acidification tank 10 through the second conduit.
The acid in the acid inlet pipe 36 is extracted by the acid inlet main branch pipe 38, the first flow pump 39 is opened, the acid in the acid inlet main branch pipe 38 is extracted by the plurality of acid inlet branch pipes 42 into a cavity surrounded by the plurality of partition plates 28 and the acidification tank 10 in the acidification tank 10, and different flow rates of the inflowing acid are controlled by the plurality of first flow pumps 39, so that different concentrations of the acid in the cavity surrounded by the plurality of partition plates 28 and the acidification tank 10 are realized.
The water in the water inlet pipe 37 is pumped out by the water inlet main branch pipe 40, the second flow pump 41 is opened, the water in the water inlet main branch pipe 40 is pumped into a cavity formed by the plurality of partition plates 28 and the acidification box 10 in the acidification box 10 by the plurality of water inlet branch pipes 43, different flow rates of inflow water are controlled by the plurality of second flow pumps 41, and different concentrations of acid in the cavity formed by the plurality of partition plates 28 and the acidification box 10 are achieved.
The automatic control structure is as follows: the concentration detectors collect concentration data in a cavity formed by the partition plates 28 and the acidification box 10 and transmit the collected data to the PLC, corresponding thresholds of acids with different concentrations are arranged in the PLC, the PLC controls the first flow pump 39 and the second flow pump 41 according to the collected data, when the collected concentration is greater than the threshold, the PLC controls the second flow pump 41 to act, the concentration of the acids in the cavity is diluted by adding water, when the collected concentration is less than the threshold, the PLC controls the first flow pump 39 to act, the concentration of the acids in the cavity is improved by adding the acids, when the collected concentration is the same as the threshold, the PLC controls the third flow pump 45 to act, the acids in the cavity formed by the partition plates 28 and the acidification box 10 are pumped to experimental objects in the reaction drawers 34, and the experimental objects react with the acids with the different concentrations.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. The utility model provides an online acidizing experimental apparatus of fracture-cavity type oil reservoir which characterized in that: comprises a bottom plate (1), a lifting mechanism and an acidification adjusting structure;
the top of the bottom plate (1) is vertically provided with a supporting block (2), and the bottom plate (1) is fixedly connected with the supporting block (2);
a first sliding groove (3) is formed in the front side of the supporting block (2), and the first sliding groove (3) is vertically arranged;
the lifting mechanism comprises a first threaded rod (21), a first sliding block (4) and a first motor (11);
the first threaded rod (21) is vertically arranged in the first sliding groove (3), and the first threaded rod (21) is rotatably connected with the supporting block (2);
the first sliding block (4) is arranged in the first sliding groove (3), the first threaded rod (21) penetrates through the first sliding block (4), and the first sliding block (4) is in threaded connection with the first threaded rod (21);
the upper end of the first threaded rod (21) penetrates through the supporting block (2), the upper end of the first threaded rod (21) is fixedly connected with an output shaft of a first motor (11), and the first motor (11) is fixedly arranged at the top of the supporting block (2);
the back of the first connecting block (5) is fixedly connected with the front of the first sliding block (4), and the first connecting block (5) is arranged in parallel with the bottom plate (1);
a second connecting block (6) is fixedly arranged on the bottom surface of the first connecting block (5), and the second connecting block (6) is vertical to the first connecting block (5);
a third connecting block (7) is fixedly arranged on the lower side surface of the second connecting block (6), and the third connecting block (7) is arranged in parallel with the first connecting block (5);
the bottom of the stirring box (14) penetrates through the first connecting block (5), and the stirring box (14) is fixedly arranged on the upper end face of the first connecting block (5);
the top of the stirring box (14) is respectively fixedly provided with an acid inlet (15) and a water inlet (16), and the acid inlet (15) and the water inlet (16) are respectively communicated with the stirring box (14);
the water pump (9) is fixedly arranged on the upper end face of the third connecting block (7);
the first guide pipe (18) is vertically arranged on the upper end face of the water pump (9), the lower end of the first guide pipe (18) is fixedly connected with the upper end face of the water pump (9), the lower end of the first guide pipe (18) is communicated with a water inlet of the water pump (9), and the upper end of the first guide pipe (18) is communicated with the lower end face of the stirring box (14);
a second guide pipe (19) is fixedly arranged on the lower end face of the water pump (9), the upper end of the second guide pipe (19) is connected with a water outlet of the water pump (9), the second guide pipe (19) penetrates through a third connecting block (7), the second guide pipe (19) is fixedly connected with the third connecting block (7), and an acid liquor nozzle (25) is formed in the side wall of the lower end of the second guide pipe (19);
the acidification adjusting structure comprises an acidification box (10), a plurality of partition plates (28), a second rotating rod (26), a plurality of stirring rods (27), a plurality of fixed blocks (29) and a plurality of acid outlets (30);
the acidification box (10) is fixedly arranged at the top of the bottom plate (1);
the plurality of partition plates (28), the second rotating rod (26) and the plurality of stirring rods (27) are arranged in the acidification box (10);
the plurality of partition plates (28) are fixedly connected with the acidification box (10), the plurality of partition plates (28) are parallel to the bottom of the acidification box (10), and the distance between every two adjacent partition plates (28) is equal;
the second rotating rod (26) is vertically arranged in the acidification box (10), the upper end of the second rotating rod (26) penetrates through the acidification box (10), the second rotating rod (26) is rotatably connected with the acidification box (10), the second rotating rod (26) penetrates through the plurality of partition plates (28), and the second rotating rod (26) is rotatably connected with the plurality of partition plates (28);
a plurality of stirring rods (27) are fixedly sleeved on the second rotating rod (26);
a plurality of fixing blocks (29) are fixedly connected to the left side of the acidification box (10), a plurality of vertical conduit through holes are formed in the upper ends of the fixing blocks (29), the conduit through holes are matched with the second conduit (19), and the fixing blocks (29) are respectively connected with the second conduit (19) in a vertical sliding mode; and the conduit through hole and the second conduit (19) are in the same vertical direction; through holes (31) are respectively formed between the fixing blocks (29) and the acidification box (10), and the through holes (31) are communicated with the conduit through holes;
a plurality of acid outlets (30) are fixedly connected to the right side of the acidification box (10), and one ends of the acid outlets (30) are communicated with the acidification box (10); the plurality of fixing blocks (29) and the plurality of acid outlets (30) are respectively arranged between the plurality of clapboards (28) and the cavity enclosed by the acidification box (10).
2. The on-line acidification experimental device for fractured-vuggy reservoirs as claimed in claim 1, wherein: the device also comprises a stirring structure;
the stirring structure comprises a fourth connecting block (8), a third motor (13), a first rotating rod (20), a first stirring roller (17), a first belt wheel (22), a second belt wheel (23) and a belt (24);
the fourth connecting block (8) is vertically arranged on the upper end face of the first connecting block (5), and the fourth connecting block (8) is parallel to the supporting block (2);
the shell of the third motor (13) is fixedly connected with the rear side of the fourth connecting block (8);
the upper end of the first rotating rod (20) is fixedly connected with an output shaft of a third motor (13), and the first rotating rod (20) is vertically arranged;
a first belt wheel (22) is arranged on the first rotating rod (20), and the first belt wheel (22) is fixedly connected with the first rotating rod (20);
the first stirring roller (17) is vertically arranged in the stirring box (14), the upper end of the first stirring roller (17) penetrates out of the stirring box (14), and the first stirring roller (17) is rotatably connected with the stirring box (14);
a second belt wheel (23) is arranged at the upper end of the first stirring roller (17), and the second belt wheel (23) is fixedly connected with the first stirring roller (17);
the second belt wheel (23) is connected with the first belt wheel (22) through a belt (24).
3. The on-line acidification experimental device for fractured-vuggy reservoirs as claimed in claim 1, wherein: still include second motor (12), second motor (12) are fixed to be located acidizing case (10) top, just the output shaft of second motor (12) and the upper end fixed connection of second dwang (26).
4. The on-line acidification experimental device for fractured-vuggy reservoirs as claimed in claim 1, wherein: the through hole (31) between the fixing block (29) and the acidification box (10) is an L-shaped through hole (31).
5. The on-line acidification experimental device for fractured-vuggy reservoirs as claimed in claim 1, wherein: also includes a reaction structure;
the reaction structure comprises a reaction box (32), a plurality of support plates (33), a plurality of reaction drawers (34), a plurality of grids (35), a plurality of transport pipes (44) and a plurality of third flow pumps (45);
the reaction box (32) is fixedly arranged at the upper end of the bottom plate (1);
the supporting plates (33) and the reaction drawers (34) are arranged in the reaction box (32), the supporting plates (33) are fixedly connected with the reaction box (32), the supporting plates (33) are parallel to the bottom of the reaction box (32), and the distance between every two adjacent supporting plates (33) is equal;
the reaction drawers (34) are respectively arranged in a cavity surrounded by the reaction box (32) and the support plates (33); the reaction drawers (34) are respectively connected with the reaction boxes (32) in a sliding way;
grids (35) are respectively arranged in the reaction drawers (34), the grids (35) are horizontally arranged, and the grids (35) are fixedly connected with the reaction drawers (34);
the plurality of conveying pipes (44) are respectively provided with a third flow pump (45); one ends of the conveying pipes (44) are communicated with the acid outlets (30) in a one-to-one correspondence mode, and the other ends of the conveying pipes (44) are communicated with a cavity defined by the reaction boxes (32) and the supporting plate (33) in a one-to-one correspondence mode.
6. The on-line acidification experimental device for fractured-vuggy reservoirs as claimed in claim 1, wherein: also includes a transport structure;
the transportation structure comprises an acid inlet pipe (36), a water inlet pipe (37), an acid inlet main branch pipe (38), a plurality of first flow pumps (39), a water inlet main branch pipe (40), a plurality of second flow pumps (41), a plurality of acid inlet branch pipes (42) and a plurality of water inlet branch pipes (43);
one end of the acid inlet pipe (36) is communicated with the acid inlet (15), and one end of the water inlet pipe (37) is communicated with one end of the water inlet (16);
one end of the acid inlet main branch pipe (38) is communicated with the acid inlet pipe (36), and the other end of the acid inlet main branch pipe (38) is communicated with one end of the plurality of acid inlet branch pipes (42);
the plurality of branch acid inlet pipes (42) are respectively provided with a first flow pump (39);
one end of the main water inlet branch pipe (40) is communicated with the water inlet pipe (37), and the other end of the main water inlet branch pipe (40) is communicated with one end of the plurality of water inlet branch pipes (43);
a second flow pump (41) is respectively arranged on the plurality of water inlet branch pipes (43);
the water inlet branch pipes (43) and the other ends of the acid inlet branch pipes (42) are in one-to-one correspondence with a cavity formed by the partition plates (28) and the acidification box (10).
7. The on-line acidification experimental device for fractured-vuggy reservoirs as claimed in claim 1, wherein: the automatic control device also comprises an automatic control structure;
the automatic control structure comprises a PLC and a plurality of concentration detectors;
the signal acquisition ends of the concentration detectors are respectively arranged in a cavity surrounded by the plurality of partition plates (28) and the acidification box (10) in a one-to-one correspondence manner, and the signal output ends of the concentration detectors are connected with the PLC;
and the signal output end of the PLC is respectively connected with a plurality of first flow pumps (39), a plurality of second flow pumps (41) and a plurality of third flow pumps (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111561044.8A CN114075963B (en) | 2021-12-20 | Online acidizing experimental device of fracture-cavity oil reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111561044.8A CN114075963B (en) | 2021-12-20 | Online acidizing experimental device of fracture-cavity oil reservoir |
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| Publication Number | Publication Date |
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| CN114075963A true CN114075963A (en) | 2022-02-22 |
| CN114075963B CN114075963B (en) | 2024-06-11 |
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