CN207393178U - High temperature and pressure alternately injects acid solution distribution simulation device - Google Patents
High temperature and pressure alternately injects acid solution distribution simulation device Download PDFInfo
- Publication number
- CN207393178U CN207393178U CN201721178140.3U CN201721178140U CN207393178U CN 207393178 U CN207393178 U CN 207393178U CN 201721178140 U CN201721178140 U CN 201721178140U CN 207393178 U CN207393178 U CN 207393178U
- Authority
- CN
- China
- Prior art keywords
- acid solution
- tank
- fracturing fluid
- valve
- back shroud
- 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.)
- Expired - Fee Related
Links
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model discloses high temperature and pressure alternately injection acid solution distribution simulation device, including flow container, inlet tube, constant-flux pump, fracturing fluid valve, frac tank, acid solution valve, acid solution tank, pressure gauge, heating rod, temperature sensor, back shroud, front shroud, observation window, waste liquid tank；Flow container is connected to by inlet tube on advection pump intake；Advection pump discharge connects fracturing fluid valve and acid solution valve, acid solution valve and the series connection of acid solution tank, fracturing fluid valve and frac tank series connection, is connected to after frac tank, acid solution tank parallel connection on back shroud；Pressure gauge, temperature sensor are installed on back shroud；Rear cover plate top surface is drilled with row's aperture, installs heating rod in hole, depending on heating rod quantity view apparatus size；Front shroud is equipped with observation window, and observation window is glass plate, and acid solution distributional pattern is observed by observation window；The back shroud other end is equipped with waste liquid tank, for recovery experiment waste liquid.
Description
Technical field
The utility model is related to a kind of high temperature and pressure, alternately injection acid solution distribution simulation device, the utility model belong to oil gas
Field development technique field.
Background technology
In carbonate reservoir acid fracturing stimulation process, acid solution, which enters stratum, can form acidizing wormhole, and acidizing wormhole increases acid
Liquid filter loss, and acid liquid loss amount is usually above the several times of fracturing fluid leak amount, acid liquid loss can cause acid-etched fracture effectively long
The serious consequences such as degree reduces, crack distal end etching effect is poor, flow conductivity is weak, and acid-etched fracture length will generate acid fracturing effect
Significant impact.Multi-stage alternate injection acid fracturing is exactly a kind of filtrate reducing, deep penetrating acid fracturing method, which uses preposition fracturing fluid
Then seam carries out alternately injection acid solution and the method for prepad fluid, reduces acid liquid loss as much as possible, it is long to improve acidfracturing treatment
Degree improves acid fracturing fracture condudtiviy.
Multi-stage alternate injects extensive use at the scene, but how to reduce leak-off, improve acid solution etching effect, extend
EFFECTIVE RANGE is also to be studied, the factor that is affected of acidifying etching effect is included injection rate, total injection, every section
Injection rate, acid strength, fracturing fluid dosage, factors above mainly influence acid solution distribution, and acid solution distribution determines acidifying etching effect.
Since downhole condition is complicated, can not intuitively observe acid solution distribution situation, so it is worthless directly to carry out experiment at the scene, borrow
It is one of research means to help the distribution of in-house laboratory investigation acid solution.
Current acid solution distributional pattern simulator is tested under conditions of room temperature or slightly above room temperature, and oil gas
The temperature in shaft bottom is significantly larger than room temperature, so conventional simulation device is unable to real simulation shaft bottom situation, analog result accuracy is not
Height, the purpose of this utility model be just to provide it is a kind of can real simulation bottom hole temperature (BHT), the high temperature and pressure of pressure alternately inject acid
Liquid distribution simulation device.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of high temperature and pressure, alternately injection acid solution distribution simulation fills
It puts.
Technical solution is used by the utility model solves above-mentioned technical problem：High temperature and pressure alternately injection acid solution distribution
Simulator, including flow container, inlet tube, constant-flux pump, fracturing fluid valve, frac tank, acid solution valve, acid solution tank, pressure gauge, heating
Stick, temperature sensor, back shroud, front shroud, observation window, waste liquid tank；Flow container is connected to by inlet tube on advection pump intake；It is flat
Flow pump discharge connection fracturing fluid valve and acid solution valve, acid solution valve and the series connection of acid solution tank, fracturing fluid valve and frac tank series connection, fracturing fluid
It is connected to after tank, acid solution tank parallel connection on back shroud；Pressure gauge, temperature sensor are installed on back shroud；Rear cover plate top surface is drilled with
One row's aperture, installs heating rod in hole, depending on heating rod quantity view apparatus size；Front shroud is equipped with observation window, and observation window is
Glass plate observes acid solution distributional pattern by observation window；The back shroud other end is equipped with waste liquid tank, for recovery experiment waste liquid.
Further, the frac tank, acid solution tank are container hollow and with piston, and fracturing fluid, acid solution are mounted in
Upper piston area space, constant-flux pump is to piston lower portion space injected clear water, and clear water promotes piston, and then piston promotes fracturing fluid, acid
Liquid, frac tank, acid solution jar structure are identical.
Further, rock can be installed, rock is used to react with the acid solution of injection, simulation ground in the back shroud
Acid-rock reaction in layer.
Further, there are several boss in the back shroud, the groove formed between boss can allow the acid solution for penetrating rock
It flows, the acid liquid loss process in simulated formation.
The beneficial effects of the utility model：(1) with intermediate receptacle dress acid solution, fracturing fluid, prevent acid solution, pressure break corrosion from putting down
Stream pump, improves device lifetime；(2) heating temperature can be set to oil and gas reservoir true temperature, more accurately research acid solution distribution
Form；(3) acid solution and fracturing fluid are injected by constant-flux pump, fluid injection discharge capacity and liquid filling pressure are stable, controllable.
Description of the drawings
Fig. 1 is high temperature and pressure alternately injection acid solution distribution simulation device isometric view；
Fig. 2 is high temperature and pressure alternately injection acid solution distribution simulation device front view；
Fig. 3 is high temperature and pressure alternately injection acid solution distribution simulation device top view；
Fig. 4 is the device rear cover plate structure schematic diagram；
Fig. 5 is the device frac tank structure diagram；
Shown in figure：1-flow container, 2-inlet tube, 3-constant-flux pump, 4-fracturing fluid valve, 5-frac tank, 6-acid solution
Valve, 7-acid solution tank, 8-pressure gauge, 9-heating rod, 10-temperature sensor, 11-back shroud, 12-front shroud, 13-sight
Examine window, 14-waste liquid tank.
Specific embodiment
With reference to embodiment, the utility model is described in more detail.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, alternately injection acid solution distribution simulation fills the high temperature and pressure of the utility model
It puts, including flow container 1, inlet tube 2, constant-flux pump 3, fracturing fluid valve 4, frac tank 5, acid solution valve 6, acid solution tank 7, pressure gauge 8, heating
Stick 9, temperature sensor 10, back shroud 11, front shroud 12, observation window 13, waste liquid tank 14；Flow container 1 is connected to flat by inlet tube 2
On stream 3 entrances of pump；The outlet of constant-flux pump 3 connection fracturing fluid valve 4 and acid solution valve 6, acid solution valve 6 and acid solution tank 7 are connected, fracturing fluid valve 4
It connects with frac tank 5, is connected to after frac tank 5,7 parallel connection of acid solution tank on back shroud 11；Pressure is installed on back shroud 11
Table 8, temperature sensor 10；11 top surface of back shroud is drilled with row's aperture, and heating rod 9,9 quantity view apparatus ruler of heating rod are installed in hole
Depending on very little；Front shroud 12 is equipped with observation window 13, and observation window 13 is glass plate, and acid solution distributional pattern is observed by observation window 13；
11 other end of back shroud is equipped with waste liquid tank 14, for recovery experiment waste liquid.
The use process of the utility model is：Rock beam is packed into back shroud 11, rock beam size will can just put back shroud into
11；Close fracturing fluid valve 4, acid solution valve 6；Distilled water is packed into flow container 1, acid solution is packed into acid solution tank 7, in frac tank 5
Interior loading fracturing fluid；Heating rod 9 is opened, rock beam is heated；Temperature sensor 10 is observed, when temperature is risen to needed for experiment
During temperature, fracturing fluid valve 4 is opened, the desired amount of fracturing fluid of injection experiments is as prepad fluid；Fracturing fluid valve 4 is closed, opens acid solution
Valve 6, the desired amount of acid solution of injection experiments；Acid solution valve 6 is closed, opens fracturing fluid valve 4, the desired amount of fracturing fluid conduct of injection experiments
Alternately injection slug；According to experiment setting, repeat alternately injection acid solution, fracturing fluid, experimental waste liquid by aforesaid operations and flow into waste liquid
Tank 14；After injecting liquid, acid solution distributional pattern is observed by observation window 13, injection pressure is read from pressure gauge 8.
Claims (4)
1. high temperature and pressure alternately injects acid solution distribution simulation device, which is characterized in that including flow container (1), inlet tube (2), advection
Pump (3), fracturing fluid valve (4), frac tank (5), acid solution valve (6), acid solution tank (7), pressure gauge (8), heating rod (9), temperature biography
Sensor (10), back shroud (11), front shroud (12), observation window (13), waste liquid tank (14)；Flow container (1) is connected by inlet tube (2)
On constant-flux pump (3) entrance；Constant-flux pump (3) outlet connection fracturing fluid valve (4) and acid solution valve (6), acid solution valve (6) and acid solution tank
(7) connect, fracturing fluid valve (4) and frac tank (5) series connection are connected to back shroud after frac tank (5), acid solution tank (7) are in parallel
(11) on；Pressure gauge (8), temperature sensor (10) are installed on back shroud (11)；Back shroud (11) top surface is drilled with row's aperture,
Heating rod (9) is installed, depending on heating rod (9) quantity view apparatus size in hole；Front shroud (12) is equipped with observation window (13), observation
Window (13) is glass plate, and acid solution distributional pattern is observed by observation window (13)；Back shroud (11) other end is equipped with waste liquid tank
(14), for recovery experiment waste liquid.
2. high temperature and pressure according to claim 1 alternately injects acid solution distribution simulation device, which is characterized in that the pressure break
Flow container (5), acid solution tank (7) are container hollow and with piston, and fracturing fluid, acid solution are mounted in upper piston area space, constant-flux pump
(3) to piston lower portion space injected clear water, clear water promotes piston, and then piston promotes fracturing fluid, acid solution, frac tank (5), acid
Flow container (7) structure is identical.
3. high temperature and pressure according to claim 1 alternately injects acid solution distribution simulation device, which is characterized in that the rear cover
Rock can be installed, rock is used to react with the acid solution of injection, the acid-rock reaction in simulated formation in plate (11).
4. high temperature and pressure according to claim 1 alternately injects acid solution distribution simulation device, which is characterized in that the rear cover
There are several boss in plate (11), the groove formed between boss can allow the acid solution for penetrating rock to flow, the acid solution in simulated formation
Leak-off process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721178140.3U CN207393178U (en) | 2017-09-14 | 2017-09-14 | High temperature and pressure alternately injects acid solution distribution simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721178140.3U CN207393178U (en) | 2017-09-14 | 2017-09-14 | High temperature and pressure alternately injects acid solution distribution simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393178U true CN207393178U (en) | 2018-05-22 |
Family
ID=62416172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721178140.3U Expired - Fee Related CN207393178U (en) | 2017-09-14 | 2017-09-14 | High temperature and pressure alternately injects acid solution distribution simulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393178U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524433A (en) * | 2017-09-14 | 2017-12-29 | 西南石油大学 | HTHP alternately injects acid solution distribution simulation device |
| CN111487172A (en) * | 2019-01-28 | 2020-08-04 | 中国石油天然气股份有限公司 | Device and method for evaluating flow conductivity of acid-etched fracture of tight reservoir core |
| CN112983386A (en) * | 2021-02-25 | 2021-06-18 | 中国石油天然气股份有限公司 | Method and device for determining dosage of pad fluid |
-
2017
- 2017-09-14 CN CN201721178140.3U patent/CN207393178U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524433A (en) * | 2017-09-14 | 2017-12-29 | 西南石油大学 | HTHP alternately injects acid solution distribution simulation device |
| CN111487172A (en) * | 2019-01-28 | 2020-08-04 | 中国石油天然气股份有限公司 | Device and method for evaluating flow conductivity of acid-etched fracture of tight reservoir core |
| CN112983386A (en) * | 2021-02-25 | 2021-06-18 | 中国石油天然气股份有限公司 | Method and device for determining dosage of pad fluid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107524433A (en) | HTHP alternately injects acid solution distribution simulation device | |
| CN207393178U (en) | High temperature and pressure alternately injects acid solution distribution simulation device | |
| CN103674593B (en) | A kind of device and method for simulating the flood pot test of low permeability reservoir pressure break straight well | |
| CN106522935B (en) | Test the method for determining the distribution of carbonate rock hydrocarbon reservoir acid fracturing fracture condudtiviy | |
| CN104594871B (en) | Device and method for simulating shale complex crack sand laying | |
| CN207194886U (en) | A kind of HTHP bottom and edge water huff and puff experimental provision | |
| CN104612674B (en) | Simulation fractured-cavernous carbonate reservoir is handled up experimental provision and method | |
| CN206129257U (en) | Hydraulic fracturing seam net proppant is spread and is put law visualization device under simulated formation temperature | |
| CN107916915A (en) | The displacement system and method for carbonization water under high-temperature and high-pressure conditions | |
| CN207739990U (en) | A kind of experimental provision of simulation fracture turnaround fracture | |
| CN109707353A (en) | Downhole hydraulic pulse S3Acidolysis plugging and injection increasing experimental device and method | |
| CN108104788B (en) | Physical model experiment device and method for determining gas well fracturing flowback opportunity and proppant fracturing fluid reflux quantity | |
| CN206091976U (en) | Experimental apparatus is invaded to high pressure -break nature gas reservoir water of simulation high temperature | |
| RU2478164C1 (en) | Development method of oil deposit located above gas deposit and separated from it with non-permeable interlayer | |
| CN104712295B (en) | One kind visualization horizontal well oil reservoir back-up sand physical model and system | |
| RU2541974C1 (en) | Well operation stimulation | |
| CN108661626A (en) | Borehole wall water enchroachment (invasion) analogue experiment installation under a kind of high temperature and pressure | |
| CN208153000U (en) | A kind of fracture-pore reservoir water injection well is acidified simulator online | |
| CN113027429A (en) | Tracing technology for monitoring horizontal well fracturing fluid flowback rate | |
| CN208885268U (en) | Borehole wall water enchroachment (invasion) imitative experimental appliance under a kind of high temperature and pressure | |
| CN105804710B (en) | A method of improving low permeability fractured reservoir gas injection and drives effect | |
| CN109707354A (en) | Underground hydraulic pulsation nanometer pressure reduction and injection increase experimental device and method | |
| CN103437745A (en) | Experimental device for simulating influence of polymer on reservoir sand production and sand control effect and sand filling model | |
| CN209179723U (en) | A kind of stifled thin henchnmrk test device of chemical agent tune | |
| CN206439037U (en) | One kind simulation tomography influences visual experimental apparatus to thin layer reservoir waterflooding extraction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20180914 |