CN111852430A - Fracturing fracture-making experimental device for simulating injection-production relation of multiple injection-production well pattern - Google Patents
Fracturing fracture-making experimental device for simulating injection-production relation of multiple injection-production well pattern Download PDFInfo
- Publication number
- CN111852430A CN111852430A CN202010774106.2A CN202010774106A CN111852430A CN 111852430 A CN111852430 A CN 111852430A CN 202010774106 A CN202010774106 A CN 202010774106A CN 111852430 A CN111852430 A CN 111852430A
- Authority
- CN
- China
- Prior art keywords
- fracturing
- injection
- porous
- production
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/04—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of buildings
Abstract
The invention relates to a fracturing and crack-making experimental device for simulating injection-production relation of a multi-injection-production well pattern, which comprises a core material input system, a plurality of pressure loading systems, a porous mold device and a multifunctional fracturing system, wherein the core material input system is composed of a plurality of material mixing devices, the plurality of material mixing devices are connected to the porous mold device, and a core manufactured by the porous mold device is arranged in the porous fracturing device of the multifunctional fracturing system and is connected with a crack monitoring system; the transparent organic glass plate on the upper surface of the porous mold is provided with a plurality of threaded holes, the connectors are in threaded connection with the threaded holes, each connector is connected with a preset pipe, and the preset pipes are distributed in the porous mold to serve as fracturing pipes and injection-production pipes, so that cores distributed in different well patterns can be manufactured; the porous mould side sets up a plurality of filling holes, realizes the preparation of different bedding rock cores. The invention solves the problem that the actual well pattern distribution can not be simulated in the test, and realizes the fracturing test of injection-production-fracturing-at-fracturing.
Description
The technical field is as follows:
the invention relates to a simulation experiment device for describing fracturing fracture-making expansion behaviors under different well pattern conditions and different stratum recovery pressures in oilfield water injection exploitation, in particular to a fracturing fracture-making experiment device for simulating injection-production relations of a multi-injection-production well pattern.
Secondly, background art:
at present, the hydraulic fracturing technology is a yield increasing measure widely applied in the field of petroleum engineering, and a better oil gas flow channel is formed in a reservoir through the hydraulic fracturing technology, so that the aim of greatly increasing the oil gas yield is fulfilled. Particularly, the effect of efficiently developing oil and gas is achieved by a horizontal well fracturing technology in the shale oil and gas reservoir and the compact sandstone oil and gas reservoir at present. In the actual oil field production process, the hydraulic fracturing reformation of a developed block is called as a main technical means for stable and high production of the oil field. However, the hydraulic fracture propagation azimuth and fracture extension trajectory and morphology are the key to ensure the technology implementation. Because the hydraulic fracturing is controlled by a surrounding stress field, the injection-production relationship and the injection-production well pattern matching relationship around the fracturing well are very important. Directly influences the fracturing construction of the reservoir and the output effect of the reservoir after fracturing. In the design of the existing fracturing test device, the injection and production well pattern test device is mostly not considered, the required experimental rock core is mostly a natural rock core or an artificial rock core, single-hole injection fracturing is carried out, and the fracturing and seam-making behaviors when the injection and production well patterns work together cannot be considered.
Thirdly, the invention content:
the fracturing and seam-making experimental device for simulating the injection-production relationship of the multiple injection-production well pattern is used for solving the problem that the existing-stage manufactured natural reservoir has different well pattern distributions, meeting the requirements of indoor tests on various cores, simultaneously solving the problem that the reservoir is reformed while injection-production is carried out in fracturing construction and solving the problem of fracturing recovery of simulated reservoir core water injection in an actual reservoir.
The technical scheme adopted by the invention for solving the technical problems is as follows: the fracturing and seam-making experimental device for simulating the injection-production relationship of the multi-injection-production well pattern comprises a core material input system, a plurality of pressure loading systems, a porous mold device and a multifunctional fracturing system, wherein the core material input system is composed of a plurality of material mixing devices, the plurality of material mixing devices are connected to the porous mold device, and a core manufactured by the porous mold device is arranged in the porous fracturing device of the multifunctional fracturing system and is connected with a crack monitoring system;
the porous die device comprises a porous die and a plurality of force application devices, the porous die is arranged on a die slideway, the porous die is formed by splicing and combining a plurality of transparent organic glass plates, the bottom surface of the porous die is arranged on the die slideway, the rest transparent organic glass plates are respectively connected with one force application device, each force application device is connected with a pressure loading system, the force application devices comprise gas pipelines, connecting shafts, gas-driven telescopic rods and shock pads, the gas pipelines are connected with the gas-driven telescopic rods, the tail ends of the gas-driven telescopic rods are connected with the shock pads, the shock pads are connected with the transparent organic glass plates, the force application devices are firmly connected with the shock pads and the transparent organic glass plates through the gas-driven telescopic rods, and the force application devices apply force to; the transparent organic glass plate on the upper surface of the porous mold is provided with a plurality of threaded holes, the connectors are in threaded connection with the threaded holes, each connector is connected with a preset pipe, and the preset pipes are distributed in the porous mold to serve as fracturing pipes and injection-production pipes, so that cores distributed in different well patterns can be manufactured; the side surface of the porous die is provided with a plurality of injection holes which are threaded holes, so that the manufacturing of different bedding cores is realized;
the multifunctional fracturing system comprises a porous fracturing device, a porous fluid injection device and a fracturing monitoring device, wherein the porous fracturing device comprises a fracturing support, the fracturing support is provided with a vertical plate, two support rods are horizontally fixed on one side of the vertical plate, a space between each support rod and a fracturing support seat is a rock core fracturing chamber, a shell of the pressure applying device is connected with the two support rods in a sliding manner, after a prepared rock core is placed in the rock core fracturing chamber, the shell of the pressure applying device slides to the vertical plate to seal the rock core in the pressure applying device, and the vertical plate is flushed on the upper surface of the rock core; the multi-hole fluid injection device comprises a first injection pump and a second injection pump, the first injection pump is connected with a fracturing pipeline through a first injection control device, the fracturing pipeline is connected with a fracturing pipe of a rock core and used for fracturing the rock core and providing injection power for fracturing fluid of the rock core, and the second injection pump is connected with injection and production pipes in the rock core through a second injection control device and a plurality of injection pipelines which are connected in parallel and used for simulating an actual injection and production well, realizing the injection and production while fracturing and simulating the fracturing of a real reservoir; the fracturing monitoring device is connected with the first liquid injection pump and the second liquid injection pump respectively.
In the scheme, the two transparent organic glass plates on the periphery of the porous mold are connected through the wedge-shaped fixing plates, each wedge-shaped fixing plate is connected with one thrust rod, and the thrust rods can automatically stretch and retract and can be automatically loaded to joints of the glass plates.
The pressure loading system in the scheme comprises a gas storage tank, a pressure control unit and a pressure monitoring system, wherein the gas storage tank is connected with each force application device through a gas transmission pipeline, the pressure control unit is arranged on the gas transmission pipeline, a gas flow and pressure control valve is arranged on the gas transmission pipeline at the outlet of the gas storage tank, and the gas flow and pressure control valve is connected with the pressure monitoring system.
The material mixing device in the scheme comprises a core raw material making pool, a raw material stirring unit, a flow control valve and a stirrer, wherein the stirrer is arranged in the core raw material making pool, the flow control valve is connected with the core raw material making pool through a raw material conveying pipeline, the raw material stirring unit is connected with the stirrer through a transmission system, and the core raw material making pool is connected with a porous mold through a material conveying pipeline.
The invention has the following beneficial effects:
1. the invention can randomly change the number and the distribution of the small holes of the top glass plate and simulate the distribution of different well patterns in an actual oil field, thereby solving the problem that the actual well pattern distribution can not be simulated in the test.
2. The invention can fracture the rock core, and can change the distribution of the injection and production well and the fracturing well by changing the access mode of the pipeline in the fracturing process, thereby realizing the simulation of the condition of injection and production while fracturing in the actual construction in the test. The invention can realize the synchronous implementation of the injection-production process and the fracturing operation and realize the fracturing test of injection-production and fracturing at the same time. Thereby solving the practical engineering problem of fracture propagation of practical reservoir fracturing.
3. The injection and production system can monitor and control injection and production conditions, the injection pipelines are configured through the monitoring system and the control valve, the start or stop of liquid injection of different injection and production pipes is realized, meanwhile, the injection of different quantities and different distribution well patterns can be realized respectively, and different requirements of tests are met.
4. The invention can change the pore space and pressure of rock and the water-containing condition of rock by changing the distribution of the injection pipe and the fracturing pipe, thereby simulating the actual reservoir characteristics and realizing the related test of indoor simulated formation pressure.
5. The mold provided by the invention can be used for manufacturing cores with different volume shapes according to requirements, and the problem of fixing the mold by the traditional mold is solved.
6. The method simulates the fracture-making fracture expansion behavior during the action of different injection-production well patterns. The fractured well pattern can be arranged according to the actual production of the oil field, the control of pressure and injection time is carried out through the control valve, and the problem of the fractured crack expansion function under the stratum conditions of different injection and production well pattern distribution characteristics, different stratum recovery pressures, different water injection pressures and the like is solved.
Description of the drawings
FIG. 1 is a schematic diagram of the overall apparatus of the present invention.
Fig. 2 is a schematic view of the porous mold apparatus of the present invention.
FIG. 3 is a schematic view of the force applying apparatus of the present invention.
Figure 4 is a schematic of the multi-functional fracturing apparatus of the present invention.
In the figure: 1 material mixing device, 2 material stirring unit, 3 core material making pool, 4 flow control valve, 5 material conveying pipeline, 6 transmission system, 7 mixed material, 8 conveying control valve, 9 material conveying pipeline, 10 gas conveying pipeline, 11 gas flow, pressure control valve, 12 pressure monitoring system, 13 gas storage tank, 14 pressure control unit, 15 force application device, 16 shock pad, 17 transparent organic glass plate, 18 preset pipe, 19 injection hole, 20 die slideway, 21 gas control device, 22 porous fracturing device, 23 crack monitoring system, 24 force application device slideway, 25 wedge fixing plate, 26 threaded hole, 27 gas pipeline, 28 connecting shaft, 29 gas drive telescopic rod, 30 pressure application device, 31 gas conveying channel, 32 core fracturing chamber, 33 fracturing monitoring device, 34 first liquid injection pump, 35 first liquid injection control device, 36 second priming pump, 37 second priming control means, 38 priming valve.
Fifth, detailed description of the invention
The invention is further described below with reference to the accompanying drawings:
with reference to fig. 1, 2, 3 and 4, the fracturing and seam-making experimental device for simulating the injection-production relationship of the multiple injection-production well pattern can be used for producing various cores with different well pattern distribution characteristics, and can perform fracturing and monitor and record the whole fracturing process, and the prepared core can perform different saturation pressure related tests, the core material mixing device comprises a core material input system, a plurality of pressure loading systems, a porous die device and a multifunctional fracturing system, wherein the core material input system is composed of a plurality of material mixing devices 1, the material mixing devices 1 are all connected to the porous die device, a core manufactured by the porous die device slides into a porous fracturing device 22 of the multifunctional fracturing system, and is connected with a crack monitoring system 23, and the gas storage tank 13, the pressure monitoring system 12 and the gas control device 21 are connected with a porous fracturing device 22.
Referring to fig. 2, the porous mold device includes a force applying device 15, a force applying device slide 24, a wedge-shaped fixing plate 25, a cushion 16, and a porous mold. In this embodiment, the porous mould is formed by six transparent organic glass boards 17 according to cube rock core shape amalgamation combination, and on mould slide 20 was arranged in to its bottom surface, the concatenation face can be adjusted the size as required, makes it satisfy experimental demand size, and five concatenation faces all are connected with force application device 15 through the connecting rod post, can control transparent organic glass board 17 freely to slide the removal on the slide according to the demand to exert pressure to the rock core, make the rock core solidify the shaping. According to different well pattern distribution characteristics and the requirements for different water injection recovery fracturing in the test, the rock core with corresponding size and material is designed, then the transparent glass flat plate with different small holes distributed is manufactured according to the requirements, the transparent organic glass plate with other surfaces is manufactured simultaneously, and the transparent organic glass plate 17 is arranged on the force application device 15.
Referring to fig. 3, the force applying device 15 includes a gas pipe 27, a connecting shaft 28, a gas driven telescopic rod 29 (acting like a jack), and a shock absorbing pad 16. The gas pipeline 27 is connected with the transparent organic glass plate 17 through a connecting shaft 28, four gas drive telescopic rods 29 and the shock absorption pad 16, the gas pipeline 27 is connected with a pressure loading system, and the gas drive telescopic rods 29 are stretched through gas drive. During operation, data are monitored through the pressure monitoring system 12, the gas flow and the pressure control valve 11 are adjusted in real time, and the gas drive telescopic rod 29 is adjusted through the pressure control unit 14. The gas drive telescopic rod 29 is driven to stretch and contract to monitor and adjust the angle and the position of the transparent organic glass plate 17 (porous flat plate) on the upper surface of the porous mold, so that the angle and the position of the transparent organic glass plate are maintained at the angle and the position required by the test, wherein the gas drive telescopic rod 29 is connected with the porous flat plate through the shock absorption pad 16, a pressure buffering effect is achieved, and the rock core and the device are prevented from being damaged when the pressure is too large or is suddenly released. The force application devices 15 are firmly connected with the shock absorption pad 16 and the transparent organic glass plate 17 through the rod columns and can slide on the force application device slide ways 24, each force application device 15 is connected with the pressure loading system, the monitoring system monitors the force application devices 15 and controls the applied pressure through the pressure control system, and the force application devices 15 are adjusted and pressed in real time to meet the manufacturing requirements.
The wedge-shaped fixing plates 25 are made of hard rubber, the force application devices 15 push the transparent organic glass plates 17 to reach preset positions, and after each transparent organic glass plate 17 is closed, the wedge-shaped fixing plates 25 are added at the closed edges of two adjacent transparent organic glass plates to play a role in fixing and sealing the die, so that core raw materials are prevented from leaking; the wedge-shaped fixing plates 25 are respectively connected with a thrust rod, and the thrust rods can automatically extend and retract and can be automatically loaded to the joint of the glass plates. Porous transparent organic glass board all has shock pad 16, and in the rock core manufacture process, shock pad 16 is connected with force applying device 15 through the connecting rod post, provides the required container of mould, exerts load to the mould, plays better sealed effect, prevents that rock core material from extruding transparent organic glass board in the rock core manufacture process, makes the seepage of rock core material.
According to actual well pattern distribution characteristics, the porous die device is arranged on the basis of simulating actual reservoir fracturing modification, so that cores capable of simulating different well pattern distribution characteristics are manufactured, hydraulic fracturing can be performed on the cores, and the multifunctional function of one device is realized. The top layer of the porous mold adopts a porous flat plate, threaded holes 26 are distributed on the surface of the porous flat plate, the threaded holes 26 are respectively used as fracturing holes and injection and production holes, and the number and the position distribution of the threaded holes can be designed according to test requirements so as to manufacture cores distributed in different well patterns; the connectors are in threaded connection with the threaded holes, each connector is connected with one of the preset pipes 18, the preset pipes are distributed in the porous die to serve as a fracturing pipe and an injection and production pipe, and after the fracturing pipe or the injection and production pipe is connected with the connectors, the connectors can be screwed on threads of the small holes. Transparent organic glass board 17 is also all adopted to four sides around the porous mould, and the glass board surface all has filling hole 19, and filling hole 19 also is the aperture of screw thread formula, and each core material input system passes through material conveying pipeline 9 and is connected with filling hole 19, provides the required raw and other materials of preparation rock core to the filling hole 19 quantity and the position of four sides can design by oneself as required, so that can accomplish the design of different bedding rock cores. When the rock core is manufactured, the corresponding fracturing pipes and the injection and production pipes are installed in advance, the rock core material input system is connected, the rock core material is injected after the die combination is completed, the rock core can be manufactured by adopting different materials according to different test requirements, and the input of the rock core is controlled only through the conveying control valve 8 of the rock core injection system, so that the rock core simulating different well pattern distribution characteristics can be manufactured. Whole porous mould device and fracturing unit all are in inclosed rock core curing box, and the curing box provides required temperature and humidity when the rock core is maintained, ensures that the solidification shaping that the rock core can be better.
In the process of making the rock core, the gas conveying device is automatically controlled through data displayed by the pressure monitoring system 12, the angle and the position of the porous flat plate are adjusted in real time, so that the porous flat plate is uniformly stressed all the time, the test requirements are met, and the porous flat plate and other flat plates form a closed module.
The invention can manufacture the rock cores with different shapes by adjusting system parameters. The unused threaded hole can be plugged by a nut, so that the core material is prevented from leaking outwards.
The pressure loading system comprises a gas storage tank 13, a pressure control unit 14 and a pressure monitoring system, wherein the gas storage tank 13 is connected with each force application device 15 through a gas transmission pipeline 10, the pressure control unit 14 is arranged on the gas transmission pipeline 10, a gas flow and pressure control valve is arranged on the gas transmission pipeline at the outlet of the gas storage tank, and the gas flow and pressure control valve is connected with the pressure monitoring system.
The material mixing device 1 comprises a core raw material making pool 3, a raw material stirring unit 2, a flow control valve 4 and a stirrer, wherein the stirrer is arranged in the core raw material making pool 3, the flow control valve 4 is connected with the core raw material making pool 3 through a raw material conveying pipeline 5, the raw material stirring unit 2 is connected with the stirrer through a transmission system 6, and the core raw material making pool 3 is connected with a porous mold through a material conveying pipeline 9.
Referring to fig. 4, the multi-functional fracturing system is comprised of a porous fluid injection device and a porous fracturing device 22, a fracture monitoring device 33. The multifunctional fracturing system is formed by coupling a porous fracturing device 22 and a multifunctional injection device, the porous fracturing device 22 performs fracturing according to pressure and data provided by a pressure applying system, different liquids are injected into a rock core through the multifunctional injection device, and a fracturing simulation test under actual well pattern distribution is simulated.
The porous fracturing device 22 comprises a fracturing support, the fracturing support is provided with a vertical plate, two support rods are horizontally fixed on one side of the vertical plate, a rock core fracturing chamber 32 is arranged in a space between the two support rods and a fracturing support seat, a shell of the pressing device is connected with the two support rods in a sliding mode, after the prepared rock core is placed in the rock core fracturing chamber 32, the shell of the pressing device 30 slides to the vertical plate, the rock core is sealed in the pressing device 30, and the vertical plate is flushed on the upper surface of the rock core. The pressure applying device 30 is a confining pressure applying device in the fracturing process in the prior art, the pressure applying device is provided with a fracture monitoring system 23 for monitoring the core fracturing process, and the porous fracturing device 22 further comprises a gas conveying channel 31.
Porous fluid injection device comprises two liquid injection pumps, first liquid injection pump 34 connects the fracturing pipeline through first notes liquid controlling means 35, be used for the rock core fracturing, provide rock core fracturing fluid injection power, second liquid injection pump 36 is through second notes liquid controlling means 37 and four other fracturing pipes of pipe connection, be used for simulating actual notes well, the notes liquid condition of four pipelines is controlled respectively by four notes liquid valves 38 of installing on four pipelines, real-time liquid control of annotating, wherein the liquid injection pump is monitored and is controlled by fracturing monitoring system, carry out real-time supervision and control to notes fracturing. After the core is made, the core is placed in the multi-hole fracturing apparatus 22. The fluid injection device is connected with the porous fracturing device 22 through different pipelines, the pipelines with corresponding functions are installed in corresponding rock small holes, an actual well pattern is simulated, the functions of injection and production and fracturing are achieved, meanwhile, water injection recovery fracturing under different conditions in an actual stratum and corresponding tests can be simulated according to test requirements, and fracturing of a real reservoir stratum is simulated better. Simultaneously, the monitoring control system among the multi-functional fracturing system can carry out real-time supervision, according to the different function control fracturing of tubular column liquid the injection flow and speed and the confined pressure when fracturing etc. monitor and record fracturing relevant data and process, can monitor and control the notes circumstances of adopting, dispose the injection pipeline through monitoring system and control flap and realize that different notes adopt the pipe to annotate liquid, can realize simultaneously annotating respectively different quantity and different distributions, satisfy experimental different demands.
The core material input system, the porous die device, the multifunctional fracturing system and other related systems are matched with one another to manufacture cores with different well pattern distribution characteristics, and various requirements are met.
The experimental method of the invention is as follows:
the first step is as follows: preparing materials for manufacturing the rock core according to needs, respectively putting the rock core raw materials into different rock core preparation raw material pools, starting a stirring unit, slowly opening a flow control valve 4, inputting the rock core raw materials into a mixing pool while stirring, and uniformly stirring the mixed materials 7. And (3) changing a corresponding flow control valve according to the test requirement and the material required by the core, and controlling the flow of the core material through a pipeline and a flow control device (if only one material is required in the test, only one core input device needs to be controlled, and the other materials are closed).
The second step is that: manufacturing a corresponding organic transparent glass plate according to experimental requirements, installing the glass plate on a force application device, and installing a corresponding fracturing pipe according to requirements.
The third step: the data required is sequentially input to the pressure monitoring system 12 as an initial condition, and then the pressure loading system and the porous mold device are started.
The fourth step: observing the die device, closing the porous die, automatically installing the wedge-shaped fixing plate 25, determining to seal, connecting the corresponding core material input pipe with the injection hole on the corresponding porous flat plate according to the core characteristics used in the test, opening the input control valve, continuously stirring the mixed raw materials, smoothly conveying the core materials into the closed porous die, closing the conveying control valve 8 when the porous die is full of the core materials, and then closing the whole core material conveying system and the maintenance box hatch door.
The fifth step: after the core material is solidified, opening the porous mold, conveying the core into the core fracturing chamber 32 along the slide way, and fixing the core;
and a sixth step: inputting relevant parameters into a fracturing monitoring system, connecting pipelines with different functions to fracturing pipes and injection and production pipes corresponding to rock cores according to test requirements, opening corresponding injection valves according to requirements, starting the fracturing system, paying attention to observation and recording results.
And a sixth step: after the experiment is finished, data are exported and arranged, the rock core which is finished in the experiment is taken out gently, the test device equipment is cleaned, and the power supply is turned off.
The invention provides a core manufacturing method and an experimental device, wherein a core simulating the characteristics of an actual reservoir can be manufactured by using the method, and the manufactured core has the characteristics of actual well pattern distribution. The method and the device can not only manufacture the rock core meeting the distribution of different well patterns, but also simulate the fracturing while injecting and extracting the rock core in practice, and change the water injection fracturing of the fractured rock core by controlling the injection amount, so that the fractured rock core is more in line with the fracturing state of a practical reservoir. The method mainly solves the problem that the manufactured natural reservoir has different well pattern distributions in the current stage, meets the requirements of indoor tests on various cores, simultaneously solves the problems of performing injection and production while performing reservoir transformation in fracturing construction and solves the problem of recovering fracturing by injecting water into the simulated reservoir core in an actual reservoir.
The invention can manufacture the moulds with different shapes and different volumes according to the requirements, thereby manufacturing the cores with various shapes meeting the experimental requirements, and the shape and the size of the core are also changeable so as to facilitate different requirements of the experiment. According to the invention, holes with different distribution characteristics can be designed on the organic transparent glass plate according to requirements, and rock cores for simulating well patterns with various distribution characteristics are manufactured, so that the fracturing experiment in different actual injection-production relationships can be simulated. The device is a coupling of a fracturing device and a multifunctional injection device, can simulate the distribution of an actual well pattern by changing the distribution of small holes of a flat plate, realizes the function of injection-production-simultaneous fracturing, can change the injection condition of liquid by a fracturing detection control system, and can simulate any different injection conditions in the actual well pattern and simulate related tests of different saturation pressures of an actual reservoir according to test requirements, wherein the similar conditions belong to the content of the scheme of the invention.
Claims (4)
1. The utility model provides a fracture joint forming experimental apparatus of multiple notes production well pattern notes production relation of simulation which characterized in that: the fracturing fracture-making experimental device for simulating the injection-production relationship of the multi-injection-production well pattern comprises a core material input system, a plurality of pressure loading systems, a porous mold device and a multifunctional fracturing system, wherein the core material input system is composed of a plurality of material mixing devices (1), the material mixing devices (1) are connected to the porous mold device, and a core made by the porous mold device is placed in the porous fracturing device (22) of the multifunctional fracturing system and is connected with a fracture monitoring system (23);
the porous mould device comprises a porous mould and a plurality of force application devices (15), the porous mould is arranged on the mould slideway and is formed by splicing and combining a plurality of transparent organic glass plates (17), the bottom surface of the device is arranged on a mold slideway, the other transparent organic glass plates are respectively connected with a force application device (15), each force application device (15) is connected with a pressure loading system, each force application device (15) comprises a gas pipeline (27), a connecting shaft (28), a gas drive telescopic rod (29) and a shock pad (16), the gas pipeline (27) is connected with the gas drive telescopic rod (29), the tail end of the gas drive telescopic rod (29) is connected with the shock pad (16), the shock pad (16) is connected with the transparent organic glass plate (17), the force application device (15) is firmly connected with the shock pad (16) and the transparent organic glass plate (17) through the gas drive telescopic rod (29), and the force application device (15) applies force to the corresponding transparent organic glass plate along the force application device slideway (24); the transparent organic glass plate on the upper surface of the porous mold is provided with a plurality of threaded holes (26), the connectors are in threaded connection with the threaded holes (26), each connector is connected with one preset pipe (18), and the preset pipes are distributed in the porous mold to serve as fracturing pipes and injection-production pipes, so that cores distributed in different well patterns can be manufactured; the side face of the porous die is provided with a plurality of injection holes (19), and the injection holes (19) are threaded holes, so that cores with different bedding structures can be manufactured;
the multifunctional fracturing system comprises a porous fracturing device (22), a porous fluid injection device and a fracturing monitoring device (33), wherein the porous fracturing device (22) comprises a fracturing support, the fracturing support is provided with a vertical plate, two support rods are horizontally fixed on one side of the vertical plate, a rock core fracturing chamber (32) is arranged in a space between the two support rods and a fracturing support seat, a shell of a pressure applying device is connected with the two support rods in a sliding mode, a prepared rock core is placed in the rock core fracturing chamber (32), the shell of the pressure applying device slides to the vertical plate to seal the rock core in the pressure applying device (30), and the vertical plate is flushed on the upper surface of the rock core; the porous fluid injection device comprises a first injection pump (34) and a second injection pump (36), wherein the first injection pump (34) is connected with a fracturing pipeline through a first injection control device (35), the fracturing pipeline is connected with a fracturing pipe of a rock core and used for fracturing the rock core and providing injection power for fracturing fluid of the rock core, and the second injection pump (36) is connected with injection and production pipes in the rock core through a second injection control device (37) and a plurality of injection pipelines connected in parallel and used for simulating an actual injection and production well, realizing injection and production while fracturing and simulating the fracturing of a real reservoir; the fracturing monitoring device (33) is respectively connected with a first liquid injection pump (34) and a second liquid injection pump (36).
2. The fracturing fracture-making experimental device for simulating injection-production relation of a multi-injection-production well pattern according to claim 1, characterized in that: two transparent organic glass plates around the porous mold are connected through a wedge-shaped fixing plate (25), each wedge-shaped fixing plate (25) is connected with a thrust rod, and the thrust rods can automatically stretch and retract and can be automatically loaded to the joint of the glass plates.
3. The fracturing fracture-making experimental device for simulating injection-production relation of a multi-injection-production well pattern according to claim 2, characterized in that: the pressure loading system comprises a gas storage tank (13), a pressure control unit (14) and a pressure monitoring system (12), wherein the gas storage tank (13) is connected with each force application device (15) through a gas transmission pipeline (10), the gas transmission pipeline (10) is provided with the pressure control unit (14), the gas transmission pipeline (10) at the outlet of the gas storage tank is provided with a gas flow rate and a pressure control valve (11), and the gas flow rate and the pressure control valve (11) are connected with the pressure monitoring system (12).
4. The fracturing fracture-making experimental device for simulating injection-production relation of a multi-injection-production well pattern according to claim 3, characterized in that: the material mixing device (1) comprises a core raw material making pool (3), a raw material stirring unit (2), a flow control valve (4) and a stirrer, wherein the stirrer is arranged in the core raw material making pool (3), the flow control valve (4) is connected with the core raw material making pool (3) through a raw material conveying pipeline (5), the raw material stirring unit (2) is connected with the stirrer through a transmission system, and the core raw material making pool (3) is connected with a porous mold through a material conveying pipeline (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774106.2A CN111852430A (en) | 2020-08-04 | 2020-08-04 | Fracturing fracture-making experimental device for simulating injection-production relation of multiple injection-production well pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774106.2A CN111852430A (en) | 2020-08-04 | 2020-08-04 | Fracturing fracture-making experimental device for simulating injection-production relation of multiple injection-production well pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111852430A true CN111852430A (en) | 2020-10-30 |
Family
ID=72953580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010774106.2A Pending CN111852430A (en) | 2020-08-04 | 2020-08-04 | Fracturing fracture-making experimental device for simulating injection-production relation of multiple injection-production well pattern |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852430A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482965A (en) * | 2020-11-12 | 2022-05-13 | 中国石油天然气股份有限公司 | Horizontal well fracturing simulation test device and method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110120718A1 (en) * | 2009-11-25 | 2011-05-26 | Halliburton Energy Services, Inc. | Simulating Subterranean Fracture Propagation |
| CN103452543A (en) * | 2013-08-27 | 2013-12-18 | 中国石油天然气股份有限公司 | Fractured horizontal well pattern model and method for manufacturing same |
| CN106677771A (en) * | 2016-11-28 | 2017-05-17 | 中国石油大学(华东) | Simulation experiment device used for enhanced geothermal system and method for evaluating porous sandstone geothermal reservoir reconstruction by means of simulation experiment device |
| CN106896043A (en) * | 2015-12-21 | 2017-06-27 | 中国石油天然气股份有限公司 | True triaxial stress Imitating crack initiation and the device of evaluation fisstured flow |
| CN208137925U (en) * | 2018-04-17 | 2018-11-23 | 东营市鼎晟宸宇油气科技有限公司 | A kind of 3-dimensional multi-layered more well pressure break supporting crack real-time monitoring experimental systems |
| US20180340873A1 (en) * | 2017-05-27 | 2018-11-29 | China University Of Petroleum-Beijing | Experimental method for indoor real-time dynamic monitoring of hydraulic fracture width |
| CN109060475A (en) * | 2018-08-16 | 2018-12-21 | 东北石油大学 | A kind of device and preparation method thereof preparing various crack rock core |
| US20190120024A1 (en) * | 2017-10-25 | 2019-04-25 | U.S. Well Services, LLC | Smart fracturing system and method |
| CN111734381A (en) * | 2020-08-04 | 2020-10-02 | 东北石油大学 | Natural crack-containing fracturing and seam-making device for simulating injection-production relation of multiple injection-production well pattern |
-
2020
- 2020-08-04 CN CN202010774106.2A patent/CN111852430A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110120718A1 (en) * | 2009-11-25 | 2011-05-26 | Halliburton Energy Services, Inc. | Simulating Subterranean Fracture Propagation |
| CN103452543A (en) * | 2013-08-27 | 2013-12-18 | 中国石油天然气股份有限公司 | Fractured horizontal well pattern model and method for manufacturing same |
| CN106896043A (en) * | 2015-12-21 | 2017-06-27 | 中国石油天然气股份有限公司 | True triaxial stress Imitating crack initiation and the device of evaluation fisstured flow |
| CN106677771A (en) * | 2016-11-28 | 2017-05-17 | 中国石油大学(华东) | Simulation experiment device used for enhanced geothermal system and method for evaluating porous sandstone geothermal reservoir reconstruction by means of simulation experiment device |
| US20180340873A1 (en) * | 2017-05-27 | 2018-11-29 | China University Of Petroleum-Beijing | Experimental method for indoor real-time dynamic monitoring of hydraulic fracture width |
| US20190120024A1 (en) * | 2017-10-25 | 2019-04-25 | U.S. Well Services, LLC | Smart fracturing system and method |
| CN208137925U (en) * | 2018-04-17 | 2018-11-23 | 东营市鼎晟宸宇油气科技有限公司 | A kind of 3-dimensional multi-layered more well pressure break supporting crack real-time monitoring experimental systems |
| CN109060475A (en) * | 2018-08-16 | 2018-12-21 | 东北石油大学 | A kind of device and preparation method thereof preparing various crack rock core |
| CN111734381A (en) * | 2020-08-04 | 2020-10-02 | 东北石油大学 | Natural crack-containing fracturing and seam-making device for simulating injection-production relation of multiple injection-production well pattern |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482965A (en) * | 2020-11-12 | 2022-05-13 | 中国石油天然气股份有限公司 | Horizontal well fracturing simulation test device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10634596B2 (en) | Visualized supercritical carbon dioxide fracturing physical simulation test method | |
| CN109060475B (en) | Device for preparing various fracture cores and preparation method thereof | |
| CN203685173U (en) | Seam cave type carbonate reservoir three-dimensional macro simulation and physical simulation experiment device | |
| CN110426286A (en) | A kind of true triaxial pressure break seepage flow follow-on test system and method | |
| CN107387075B (en) | Proppant migration device used for observing coal reservoir fracturing process | |
| CN106840977A (en) | Slurry filling imitation device | |
| CN105134186A (en) | Shale gas hydraulic fracturing physical simulation test system | |
| CN104727805A (en) | Apparatus for evaluating cementing strength of cement sheath | |
| CN107907422A (en) | A kind of large scale true triaxial hydraulic fracturing experiments machine and its experimental method containing temperature control system | |
| CN203614095U (en) | Cement sheath cementing strength evaluation device | |
| CN106814016A (en) | The analogy method of slurry filling imitation device | |
| CN111734381A (en) | Natural crack-containing fracturing and seam-making device for simulating injection-production relation of multiple injection-production well pattern | |
| CN105178927B (en) | A kind of displacement simulation experimental provision and system | |
| AU2020101248A4 (en) | A Preparation Device for Compressive Pre-stress Artificial Core | |
| CN206903650U (en) | A kind of Visual Dynamic becomes the proppant sanding analogue means of slit width | |
| CN111119831A (en) | Indoor simulation test device for staged fracturing of horizontal well and operation method thereof | |
| CN208137906U (en) | Actual triaxial testing apparatus is used in a kind of temporarily stifled steering behaviour evaluation | |
| CN111852430A (en) | Fracturing fracture-making experimental device for simulating injection-production relation of multiple injection-production well pattern | |
| CN108519467B (en) | Transparent parallel plate crack device, temporary holding manufactured branch crack simulation experiment device and simulation experiment method | |
| CN105784939A (en) | Underground gas storage reservoir simulating experimental device and experimental method | |
| CN111075390B (en) | Visual experimental device and experimental method based on adherent drilling well sealing effect evaluation | |
| CN106383219B (en) | Simulate the visualization device and test method that discontinuous sanding seam dynamic is closed | |
| CN108538174A (en) | A kind of large scale experimental model preparation facilities and method based on rock-soil material | |
| CN109594960A (en) | The visual experimental apparatus and its visualization sandpack column of analog composite foam profile control | |
| CN212671758U (en) | Well cementation cement sheath integrality evaluation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
|
| RJ01 | Rejection of invention patent application after publication |