CN114113497A - Experimental device and test method for evaluating fracturing performance of liquid phase-change propping agent - Google Patents
Experimental device and test method for evaluating fracturing performance of liquid phase-change propping agent Download PDFInfo
- Publication number
- CN114113497A CN114113497A CN202210068873.0A CN202210068873A CN114113497A CN 114113497 A CN114113497 A CN 114113497A CN 202210068873 A CN202210068873 A CN 202210068873A CN 114113497 A CN114113497 A CN 114113497A
- Authority
- CN
- China
- Prior art keywords
- experimental device
- liquid phase
- proppant
- change
- phase change
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an experimental device for evaluating fracturing performance of a liquid phase-change propping agent, which relates to the technical field of oil and gas development and comprises a device main body, an upper end surface rough steel plate, a lower end surface rough glass plate, a sealing ring and a piston; the invention also discloses a test method of the experimental device for evaluating the fracturing performance of the liquid phase-change proppant. The invention considers the complexity of reservoir conditions of unconventional oil and gas fields, thus increasing the conditions of high temperature and low temperature in experimental conditions; secondly, because the phase change condition of the liquid phase change proppant cannot be observed by the conventional experimental device, the phase change condition of the liquid phase change proppant under the reservoir condition cannot be accurately mastered.
Description
Technical Field
The invention relates to the technical field of oil and gas development, in particular to a device and a method for testing the fracturing performance of a liquid phase-change proppant under reservoir conditions.
Background
At present, the development of conventional oil gas enters a high water content stage, and the resource reserves of the unconventional oil gas are huge, so that the unconventional oil gas is a main force for replacing the conventional oil gas and guaranteeing the energy safety of China. Unconventional oil and gas reservoirs are complex in geological structure, and the mastered geological exploration and development theory and the conventional oil and gas development technology cannot be completely suitable for developing unconventional oil and gas. The development of unconventional hydrocarbons requires extensive hydraulic fracturing to fracture complex fractures in the formation and to pack proppant to provide a pathway for unconventional hydrocarbon flow. The traditional solid propping agent has a rigid structure, is carried by sand-carrying fluid to enter into cracks, but has the problems of easy sedimentation, short migration distance, difficult entering into branch cracks and the like, and complex cracks formed by hydraulic fracturing cannot be effectively supported, so that the hydraulic fracturing effect is influenced, and the development of unconventional oil gas is restricted.
The liquid phase-change propping agent is formed by injecting liquid polymer material and fracturing fluid into a stratum into a fracture, and polymerizing the polymer material at a specific temperature and time to form a high-strength granular material propping fracture. The mobility of the liquid polymer greatly improves the migration capacity of the liquid polymer in the fracture and the capacity of entering the branch fracture, can effectively improve the effective conveying of the propping agent in the fracture, reduces the embedding in a reservoir and supports the complex fracture more effectively. The fracturing performance of the liquid phase-change proppant as a novel proppant is not clear at present, so that the flow conductivity and the phase change condition of the liquid phase-change proppant under reservoir conditions are obtained most importantly.
The existing diversion capability test is carried out in a normal-temperature and closed instrument, and the existing diversion chamber cannot simulate various complicated unconventional reservoir conditions and observe the phase change condition of the liquid phase change propping agent. The liquid phase-change proppant has different conductivity and phase-change conditions under different reservoir conditions, and new equipment is needed to simulate different reservoir conditions and observe the phase-change conditions.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an experimental device and a test method for evaluating the fracturing performance of a liquid phase-change proppant under reservoir conditions, so that the phase change and support conditions of the liquid phase-change proppant in a reservoir can be more deeply understood.
The technical purpose of the invention is realized by the following technical scheme: including the coarse steel sheet of device main part, up end, the coarse glass board of lower terminal surface, sealing washer and piston, the bottom of device main part is sealed and is set up, the upper end of device main part is equipped with the inside cavity of main part, the upper end of device main part is established the side bottom and is equipped with and deposits the recess, two of homonymy it does not communicate to deposit the recess, the upper end of device main part is seted up and is located the inside cavity outlying cylindrical cavity of main part, install on the lateral wall of device main part not with deposit the business turn over liquid pipe of the same lateral wall of recess, install the valve on the business turn over liquid pipe.
Preferably, the shape of the internal cavity of the body is: the opening length is 17.78cm, the width is 3.81cm, and the area is 64.5cm2And two semicircles are arranged at two ends.
Preferably, the length of the storage recess is greater than the length of the cavity inside the main body.
The invention also discloses a test method of the experimental device for evaluating the fracturing performance of the liquid phase-change proppant, which comprises the steps of testing the flow conductivity of the liquid phase-change proppant, observing the phase change condition, calculating the proportion of the liquid phase-change proppant into the proppant and testing the lipophilicity, wherein a hydraulic machine, a constant flow pump, a pressure sensor, a beaker for containing test distilled water and an empty beaker are prepared before the experiment begins, and the testing of the flow conductivity of the liquid phase-change proppant and the observing the phase change condition comprise the following steps:
s1, assembling a main body experimental device and placing the main body experimental device between two parallel plates of a hydraulic frame of the hydraulic machine;
s2, operating the hydraulic press to apply pressure to the piston to keep the experimental device at a certain pressure;
s3, adjusting the temperature of the heating plate and the refrigerating sheet to keep the experimental device at a certain temperature;
s4, standing the mixture based on the required phase change time after the step 2 and the step 3 are completed;
s5, opening the closed liquid inlet pipe and liquid outlet pipe, slowly opening a saturated water valve on the advection pump, sucking distilled water from a beaker filled with distilled water by the advection pump to saturate the experimental device, slowly discharging gas in the experimental device until the experimental device and all pipelines are fully filled, and closing the saturated water valve; starting the saturated water valve again, setting the flow rate, and continuously injecting distilled water into the experimental device for testing;
s6, recording the data in the step S5, and calculating to obtain the diversion capacity of the liquid phase-change propping agent after phase change;
and S7, opening the experimental device after the measurement is finished, and observing the phase change condition of the liquid phase change proppant under certain conditions through the transparent rough glass plate on the lower end surface.
Preferably, the assembling step of the main assembly experimental device in S1 is as follows:
1) placing a steel plate with a rough upper end surface at the bottom of the inner cavity of the device main body;
2) and (3) closing the liquid inlet and outlet pipe, calculating the volume of the required liquid phase-change proppant according to the required crack width through V = S x h, and injecting the volume into the equipment, wherein V: a desired volume of liquid phase change proppant; s: bottom area of the experimental device; h: the width of the crack is wide;
3) placing the lower end surface rough glass plate above the liquid phase-change propping agent;
4) placing the prepared heating plate and the prepared refrigerating sheet into the storage groove;
5) placing a temperature sensor in the cylindrical cavity;
6) placing the piston with the sealing ring into the cavity in the main body;
7) the constant-flow pump is connected with a beaker for containing test distilled water, the liquid inlet pipe is connected with a saturated water valve joint and a pressure sensor joint on the constant-flow pump, and the liquid outlet pipe is respectively connected with an empty beaker and the other end joint of the pressure sensor.
Preferably, the sealing ring in 6) is coated with a small amount of vaseline.
Preferably, the liquid phase change proppant ratio calculation and lipophilicity test comprise the steps of:
and 5, opening the sealed liquid inlet and outlet pipe, slowly opening a saturated water valve between the advection pump and the liquid inlet pipe, sucking distilled water from the beaker filled with the distilled water to saturate the experimental device, and passing through the volume V reduced in the beaker filled with the distilled water1Obtaining the volume V of the proppant converted from the liquid phase-change proppant under certain conditions2=V-V1Then the ratio of the liquid phase-change proppant to the phase-change generated proppant = V2/V；
Preferably, the assembling step of the main body experimental device in the step 1 is as follows:
1) placing a steel plate with a rough upper end surface at the bottom of the inner cavity of the device main body;
2) sealing the liquid inlet and outlet pipe, calculating the volume of the required liquid phase-change proppant according to the required crack width and through V = S x h, and injecting the volume into equipment; wherein, V: a desired volume of liquid phase change proppant; s: bottom area of the experimental device; h: the width of the crack is wide;
3) placing the lower end surface rough glass plate above the liquid phase-change propping agent;
4) placing the prepared heating plate and the prepared refrigerating sheet into the storage groove;
5) placing a temperature sensor in the cylindrical cavity;
6) placing a piston with a sealing ring into a cavity in the main body, wherein a small amount of vaseline is coated on the sealing ring;
7) the constant-flow pump is connected with a beaker for containing test distilled water, the liquid inlet pipe is connected with a saturated water valve joint and a pressure sensor joint on the constant-flow pump, and the liquid outlet pipe is respectively connected with an empty beaker and the other end joint of the pressure sensor.
In conclusion, the complexity of reservoir conditions of unconventional oil and gas fields is considered, so that high-temperature and low-temperature conditions are added in experimental conditions; secondly, because the phase change condition of the liquid phase change proppant cannot be observed by the conventional experimental device, the phase change condition of the liquid phase change proppant under the reservoir condition cannot be accurately mastered.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a perspective view of an experimental apparatus for evaluating fracturing performance of a liquid phase-change proppant provided by the invention;
FIG. 2 is a side view of an experimental apparatus for evaluating fracturing performance of a liquid phase-change proppant provided by the invention;
FIG. 3 is a front view of an experimental apparatus for evaluating fracturing performance of a liquid phase-change proppant provided by the invention;
fig. 4 is a top view of an experimental apparatus for evaluating fracturing performance of a liquid phase-change proppant provided by the invention.
Reference numerals:
1. a piston; 2. a seal ring; 3. a glass plate with a rough lower end surface; 4. a steel plate with a rough upper end surface; 5. a cylindrical cavity; 6. a main body interior cavity; 7. a storage recess; 8. a liquid inlet pipe; 9. a device main body; an outlet pipe 10.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the experimental device for evaluating the fracturing performance of the liquid phase-change proppant comprises a device main body 9, an upper end surface rough steel plate 4, a lower end surface rough glass plate 3 and a piston 1, wherein a sealing groove is formed in the outer wall of the piston 1, a sealing ring 2 is installed in the sealing groove, the device main body 9 is of a cuboid structure, the bottom end of the device main body is sealed, and a main body inner cavity 6 is formed in the top end of the device main body 9 and used for placing other experimental test devices; wherein, the shape of the main body internal cavity 6 is: the opening length is 17.78cm, the width is 3.81cm, and the area is 64.5cm2And two semicircles are arranged at two ends.
The two sides of the cavity 6 in the main body and the bottoms of the two sides of the main body 9 are provided with three storage grooves 7 in total for placing heating plates and refrigerating sheets to simulate the reservoir temperature, the two storage grooves 7 on the two sides of the cavity 6 in the main body are not communicated with the storage grooves 7 on the bottoms of the two sides of the main body 9, and the length of the storage grooves 7 is greater than that of the cavity 6 in the main body; the upper end of the device main body 9 is provided with four cylindrical cavities 5 positioned at the periphery of the cavity 6 in the main body and used for storing the temperature sensor; liquid inlet pipe 8 is installed to other both sides one side of device main part 9, and drain pipe 10 is installed to the opposite side, and liquid inlet pipe 8 and drain pipe 10 the central axis all are parallel with the horizontal plane, install the valve on liquid inlet pipe 8 and the drain pipe 10 for carry out sealing treatment to equipment.
In the experiment, liquid phase change propping agent is injected between the upper end surface rough steel plate 4 and the lower end surface rough glass plate 3, the gap between the upper end surface rough steel plate 4 and the lower end surface rough glass plate 3 represents an experiment crack, and the crack is always kept at the central position of the liquid inlet and outlet pipe, so that the upper end surface rough steel plate 4 and the lower end surface rough glass plate 3 with proper thickness are selected according to the width of the crack, and the upper end surface rough steel plate 4 is used for simulating the stratum on one side after fracturing; the lower end surface rough transparent glass plate 3 is used for simulating the stratum on the other side after fracturing (steel plates and glass plates with different roughness can be replaced and cracks with different roughness can be simulated), and the transparent glass plate can be used for observing the phase change condition of the liquid phase change propping agent.
The piston 1 is used for applying pressure to simulate reservoir pressure, and the sealing ring 2 can realize the sealing of the piston 1 and the device body 9, so that fluid injected from the liquid inlet pipe 8 only flows out from the liquid outlet pipe 10 after passing through a crack, and cannot leak out from other positions. In addition, displacement sensors are respectively arranged in the middle of the upper end face of the piston 1 or at two ends of the upper end face of the piston 1, if pressure is uniformly applied to the upper end face of the piston 1, only the displacement sensor is arranged in the middle of the upper end face of the piston 1, if the pressure cannot be uniformly applied to the upper end face of the piston 1, the displacement sensors can be respectively arranged at two ends of the upper end face of the piston 1, and the displacement of the upper cover can be measured by taking the average value of readings of the two displacement sensors as the displacement of the piston 1 or adopting other devices for measuring the displacement.
The invention comprises the following experimental operation method, taking the crack width of 1mm as an example, preparing a hydraulic machine, a constant flow pump, a pressure sensor, a beaker for containing test distilled water and an empty beaker before the beginning of the experiment.
The invention discloses a test method of an experimental device for evaluating fracturing performance of a liquid phase-change proppant, which comprises the following steps:
1. testing the conductivity of the liquid phase-change proppant and observing the phase-change condition:
s1, assembling the main experimental device and placing the main experimental device between two parallel plates of the hydraulic frame, wherein the assembling steps are as follows:
1) placing the upper end surface rough steel plate 4 at the bottom of the inner cavity 6 of the device main body; firstly, putting one end of a rough steel plate 4 on the upper end surface into the bottom in parallel, and slowly pressing the other end into a cavity 6 in the main body;
2) the liquid inlet pipe 8 and the liquid outlet pipe 10 are closed, and the liquid phase change propping agent needing to be injected is obtained to be V =64.5cm according to V = S x h20.1cm =6.45 ml; wherein, V: a desired volume of liquid phase change proppant; s: bottom area of the experimental device; h: the width of the crack is wide;
3) placing the lower end surface rough glass plate 3 above the liquid phase-change propping agent;
4) putting the prepared heating plate and the prepared refrigerating sheet into the groove 7;
5) placing the temperature sensor in the cylindrical cavity 5;
6) the sealing ring 2 is arranged in a sealing groove on the outer wall of the piston 1, then the piston 1 is placed in the cavity 6 in the main body, and preferably, a small amount of vaseline can be coated on the sealing ring 2;
7) the constant-flow pump is connected with a beaker for containing test distilled water, the liquid inlet pipe 8 is connected with a saturated water valve joint and a pressure sensor joint on the constant-flow pump, and the liquid outlet pipe 10 is respectively connected with an empty beaker and the other end joint of the pressure sensor.
S2, utilizing a hydraulic press to apply downward pressure to the piston 1, and keeping the pressure of the experimental device at 3.5 MPa;
s3, adjusting the temperature of the heating plate and the refrigerating sheet to keep the temperature of the experimental device at 70 ℃ (the temperature measured by the four temperature sensors is averaged to obtain the temperature;
s4, standing for 60 minutes after the step 2 and the step 3 are completed;
s5, opening the closed liquid inlet pipe 8 and liquid outlet pipe 10, saturating the experimental device, slowly opening a saturation water valve, sucking distilled water from the beaker filled with distilled water until the experimental device and all pipelines are fully filled, namely the values of the pressure sensors at the inlet and outlet of the liquid inlet pipe 8 and liquid outlet pipe 10 are zero, at this time, all gas in the experimental device is discharged, and closing the saturation water valve; starting the saturated water valve again, setting the flow rate, and continuously injecting distilled water into the experimental device for testing;
s6, recording the data in the step S5, and calculating to obtain the diversion capacity of the liquid phase-change propping agent after phase change;
and S7, opening the experimental device after the measurement is finished, and observing the phase change condition of the liquid phase change proppant under the experimental condition through a transparent glass plate.
2. Calculating the proportion of the liquid phase-change proppant to generate the proppant and testing the lipophilicity:
1) placing the upper end surface rough steel plate 4 at the bottom of the inner cavity 6 of the device main body; firstly, putting one end of a rough steel plate 4 on the upper end surface into the bottom in parallel, and slowly pressing the other end into a cavity 6 in the main body;
2) the liquid inlet pipe 8 and the liquid outlet pipe 10 are closed, and the liquid phase change propping agent needing to be injected is obtained to be V =64.5cm according to V = S x h20.1cm =6.45 ml; wherein, V: a desired volume of liquid phase change proppant; s: bottom area of the experimental device; h: the width of the crack is wide;
3) placing the lower end surface rough glass plate 3 above the liquid phase-change propping agent;
4) placing the prepared heating plate and the prepared refrigerating sheet into the storage groove 7;
5) placing the temperature sensor in the cylindrical cavity 5;
6) the sealing ring 2 is arranged in a sealing groove at the bottom end of the piston 1, and the whole sealing ring is placed in a cavity 6 in the main body, wherein a small amount of vaseline can be coated on the sealing ring 2;
7) the constant-flow pump is connected with a beaker for containing test distilled water, the liquid inlet pipe 8 is connected with a saturated water valve joint and a pressure sensor joint on the constant-flow pump, and the liquid outlet pipe 10 is respectively connected with an empty beaker and the other end joint of the pressure sensor.
and 5, opening the sealed liquid inlet and outlet pipe, slowly opening a saturation water valve, sucking distilled water from the beaker filled with the distilled water to saturate the experimental device, and passing through the reduced volume V in the beaker filled with the distilled water1Obtaining the volume V of the proppant converted from the liquid phase-change proppant under certain conditions2=V-V1Then the ratio of the liquid phase-change proppant to the phase-change generated proppant = V2/V；
The invention considers the complexity of reservoir conditions of unconventional oil and gas fields, thus increasing the conditions of high temperature and low temperature in experimental conditions; secondly, because the phase change condition of the liquid phase change proppant cannot be observed by the conventional experimental device, the phase change condition of the liquid phase change proppant under the reservoir condition cannot be accurately mastered.
Claims (6)
1. The utility model provides an experimental apparatus for evaluation liquid phase transition proppant fracturing performance, includes device main part (9), the coarse steel sheet of up end (4), the coarse glass board of lower terminal surface (3), sealing washer (2) and piston (1), characterized by: the bottom of device main part (9) seals the setting, the top of device main part (9) is equipped with main part inside cavity (6), and 6 both sides of main part inside cavity and 9 both sides bottoms of device main part are equipped with deposits recess (7), and two of 6 both sides of main part inside cavity are deposited recess (7) and are not communicated with depositing recess (7) of 9 both sides bottoms of device main part, the top of device main part (9) is seted up and is located main part inside cavity (6) outlying cylindrical cavity (5), install on the lateral wall of device main part (1) feed liquor pipe (8) and drain pipe (10) not with the same lateral wall of depositing recess (7).
2. The experimental device for evaluating the fracturing performance of the liquid phase-change proppant as claimed in claim 1, wherein: the shape of the main body internal cavity (6) is as follows: the opening length is 17.78cm, the width is 3.81cm, and the area is 64.5cm2And two semicircles are arranged at two ends.
3. The experimental device for evaluating the fracturing performance of the liquid phase-change proppant as claimed in claim 2, wherein: the length of the storage groove (7) is greater than that of the cavity (6) in the main body.
4. The test method for evaluating the fracturing performance of the liquid phase-change proppant is characterized by comprising the following steps: the method comprises two steps of liquid phase change proppant conductivity testing, phase change condition observation, proppant ratio calculation generated by liquid phase change proppant phase change and oleophilicity testing, wherein a hydraulic machine, a constant flow pump, a pressure sensor, a beaker for containing test distilled water and an empty beaker are prepared before the experiment begins, and the liquid phase change proppant conductivity testing and the phase change condition observation experiment steps are as follows:
s1, assembling a main experimental device and placing the main experimental device between two parallel plates of a hydraulic frame of the hydraulic machine, wherein the assembling steps of the experimental device are as follows:
1) placing a steel plate (4) with a rough upper end surface at the bottom of a cavity (6) in the device main body; firstly, putting one end of a rough steel plate (4) on the upper end surface into the bottom in parallel, and then slowly pressing the other end into a cavity (6) in the main body;
2) the liquid inlet pipe (8) and the liquid outlet pipe (10) are closed, and the volume of the liquid phase change propping agent to be injected is obtained according to V = S x h; wherein, V: a desired volume of liquid phase change proppant; s: bottom area of the experimental device; h: the width of the crack is wide;
3) placing a lower end surface rough glass plate (3) above the liquid phase-change propping agent;
4) putting the prepared heating plate and the prepared refrigerating sheet into the groove (7);
5) placing the temperature sensor in the cylindrical cavity (5);
6) the sealing ring (2) is arranged in a sealing groove on the outer wall of the piston (1), then the piston (1) is placed in a cavity (6) in the main body, and preferably, a small amount of vaseline can be coated on the sealing ring (2);
7) connecting the constant-flow pump with a beaker for containing test distilled water, connecting a liquid inlet pipe (8) with a saturated water valve joint and a pressure sensor joint on the constant-flow pump, and respectively connecting a liquid outlet pipe (10) with an empty beaker and the other end joint of the pressure sensor;
s2, operating the hydraulic machine to apply pressure to the piston (1) to keep the experimental device at a certain pressure;
s3, adjusting the temperature of the heating plate and the refrigerating sheet to keep the experimental device at a certain temperature;
s4, standing the mixture based on the required phase change time after the step 2 and the step 3 are completed;
s5, opening a closed liquid inlet pipe (8) and a closed liquid outlet pipe (10), saturating the experimental device, slowly opening a saturation water valve, sucking distilled water from a beaker filled with the distilled water until the experimental device and all pipelines are fully filled, namely the inlet and outlet pressure sensors of the liquid inlet pipe 8 and the liquid outlet pipe 10 are zero, discharging all gas in the experimental device at the moment, and closing the saturation water valve; starting the saturated water valve again, setting the flow rate, and continuously injecting distilled water into the experimental device for testing;
s6, recording the data in the step S5, and calculating to obtain the diversion capacity of the liquid phase-change propping agent after phase change;
and S7, opening the experimental device after the measurement is finished, and observing the phase change condition of the liquid phase change propping agent under certain conditions through the transparent rough glass plate (3) on the lower end surface.
5. The test method for evaluating the fracturing performance of the liquid phase-change proppant as claimed in claim 4, wherein the test method comprises the following steps: and a small amount of vaseline is coated on the sealing ring (2).
6. The test method for evaluating the fracturing performance of the liquid phase-change proppant as claimed in claim 4, wherein the test method comprises the following steps: the liquid phase change proppant phase change generation proppant proportion calculation and lipophilicity test experiment steps are as follows:
step 1, assembling a main body experimental device and placing the main body experimental device between two parallel plates of a hydraulic frame of a hydraulic machine, wherein the assembling steps of the experimental device are as follows:
1) placing a steel plate (4) with a rough upper end surface at the bottom of a cavity (6) in the device main body;
2) sealing the liquid inlet and outlet pipe, calculating the volume of the required liquid phase-change proppant according to the required crack width and through V = S x h, and injecting the volume into equipment; wherein, V: a desired volume of liquid phase change proppant; s: bottom area of the experimental device; h: the width of the crack is wide;
3) placing a lower end surface rough glass plate (3) above the liquid phase-change propping agent;
4) putting the prepared heating plate and the prepared refrigerating sheet into the storage groove (7);
5) placing the temperature sensor in the cylindrical cavity (5);
6) the piston (1) with the sealing ring (2) is placed in the cavity (6) in the main body, and a small amount of vaseline can be coated on the sealing ring (2);
7) connecting the constant-flow pump with a beaker for containing test distilled water, respectively connecting a liquid inlet pipe (8) with a saturated water valve joint and a pressure sensor joint on the constant-flow pump, and respectively connecting a liquid outlet pipe (10) with the beaker for containing the test distilled water and the other end joint of the pressure sensor;
step 2, operating the hydraulic machine to apply pressure to the piston (1) to keep the experimental device at a certain pressure;
step 3, adjusting the temperature of the heating plate and the refrigerating sheet to keep the experimental device at a certain temperature;
step 4, standing based on the required phase change time after the step 2 and the step 3 are completed;
and 5, opening the sealed liquid inlet and outlet pipe, slowly opening a saturation water valve, sucking distilled water from the beaker filled with the distilled water to saturate the experimental device, and passing through the reduced volume V in the beaker filled with the distilled water1Obtaining the volume V of the proppant converted from the liquid phase-change proppant under certain conditions2=V-V1Then the ratio of the liquid phase-change proppant to the phase-change generated proppant = V2/V；
Step 6, placing the experimental device saturated with water in the step 5 into an oil absorption instrument, filling the instrument with oil, and automatically absorbing the oil into the rock core and displacing the water in the experimental device; the expelled water sinks to the bottom of the instrument, and the volume of the expelled water is read by the graduated scale VW(ii) a Similarly, the saturated oil of the experimental device is put into a water absorption instrument, then the instrument is filled with water, and the water automatically absorbs the rock core and displaces the oil in the experimental device; the expelled oil floats on the top of the instrument, its volume VOReading by a graduated scale; if VW＞VOThen the hydrophilicity of the liquid phase-change propping agent is larger than the lipophilicity after the phase change; conversely, lipophilicity is greater than hydrophilicity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210068873.0A CN114113497B (en) | 2022-01-21 | 2022-01-21 | Experimental device and test method for evaluating fracturing performance of liquid phase-change propping agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210068873.0A CN114113497B (en) | 2022-01-21 | 2022-01-21 | Experimental device and test method for evaluating fracturing performance of liquid phase-change propping agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114113497A true CN114113497A (en) | 2022-03-01 |
| CN114113497B CN114113497B (en) | 2022-06-24 |
Family
ID=80360925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210068873.0A Active CN114113497B (en) | 2022-01-21 | 2022-01-21 | Experimental device and test method for evaluating fracturing performance of liquid phase-change propping agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114113497B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519961A (en) * | 2009-04-01 | 2009-09-02 | 西南石油大学 | Device and method for measuring embedding depth of proppant |
| CN102393351A (en) * | 2011-11-30 | 2012-03-28 | 中国石油天然气股份有限公司 | Rock wettability measuring method and device under oil reservoir condition |
| CN102928556A (en) * | 2012-10-29 | 2013-02-13 | 西南石油大学 | Device and method for large-size visual physical simulation of fingering of acid liquid in acid fracturing crack |
| CN104358554A (en) * | 2014-12-09 | 2015-02-18 | 中国石油集团川庆钻探工程有限公司 | Shale gas combined sand fracturing fracture conductivity evaluation method |
| CN106483250A (en) * | 2015-08-28 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of evaluation method of the flow conductivity of proppant |
| CN106526137A (en) * | 2016-11-17 | 2017-03-22 | 青岛科技大学 | Physical simulation experiment evaluation method for fracturing performance and flow conductivity of self-suspension propping agent |
| CN206129257U (en) * | 2016-09-21 | 2017-04-26 | 西南石油大学 | Hydraulic fracturing seam net proppant is spread and is put law visualization device under simulated formation temperature |
| CN108386179A (en) * | 2018-03-13 | 2018-08-10 | 西南石油大学 | A kind of optimization method of sandstone reservoir hydraulic fracturing proppants parameter |
| CN109030292A (en) * | 2018-09-26 | 2018-12-18 | 西南石油大学 | A kind of new method that tight rock wetability determines |
| CN110469311A (en) * | 2019-08-28 | 2019-11-19 | 赣江新区澳博颗粒科技研究院有限公司 | The coarse fracture network visualization device of dynamic expansion under the conditions of a kind of simulation confining pressure |
| CN111060284A (en) * | 2020-01-02 | 2020-04-24 | 中海石油(中国)有限公司 | Testing device and method for simulating proppant backflow after fracture closure |
| CN211978612U (en) * | 2020-01-17 | 2020-11-20 | 中国海洋石油集团有限公司 | Device for evaluating oil-water selectivity of filling particles |
| CN112267873A (en) * | 2020-09-22 | 2021-01-26 | 中国石油大学(华东) | Single-fracture profile control and flooding visualization experiment device and method for simulating formation conditions |
| CN212985201U (en) * | 2020-07-24 | 2021-04-16 | 西南石油大学 | Visual simulation device for migration and deposition of pulverized coal on proppant filling layer |
| CN112964603A (en) * | 2021-03-02 | 2021-06-15 | 中国石油大学(华东) | Fracture-cave carving multi-rock-disk acid liquid radial flow real-time imaging simulation system and working method thereof |
-
2022
- 2022-01-21 CN CN202210068873.0A patent/CN114113497B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519961A (en) * | 2009-04-01 | 2009-09-02 | 西南石油大学 | Device and method for measuring embedding depth of proppant |
| CN102393351A (en) * | 2011-11-30 | 2012-03-28 | 中国石油天然气股份有限公司 | Rock wettability measuring method and device under oil reservoir condition |
| CN102928556A (en) * | 2012-10-29 | 2013-02-13 | 西南石油大学 | Device and method for large-size visual physical simulation of fingering of acid liquid in acid fracturing crack |
| CN104358554A (en) * | 2014-12-09 | 2015-02-18 | 中国石油集团川庆钻探工程有限公司 | Shale gas combined sand fracturing fracture conductivity evaluation method |
| CN106483250A (en) * | 2015-08-28 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of evaluation method of the flow conductivity of proppant |
| CN206129257U (en) * | 2016-09-21 | 2017-04-26 | 西南石油大学 | Hydraulic fracturing seam net proppant is spread and is put law visualization device under simulated formation temperature |
| CN106526137A (en) * | 2016-11-17 | 2017-03-22 | 青岛科技大学 | Physical simulation experiment evaluation method for fracturing performance and flow conductivity of self-suspension propping agent |
| CN108386179A (en) * | 2018-03-13 | 2018-08-10 | 西南石油大学 | A kind of optimization method of sandstone reservoir hydraulic fracturing proppants parameter |
| CN109030292A (en) * | 2018-09-26 | 2018-12-18 | 西南石油大学 | A kind of new method that tight rock wetability determines |
| CN110469311A (en) * | 2019-08-28 | 2019-11-19 | 赣江新区澳博颗粒科技研究院有限公司 | The coarse fracture network visualization device of dynamic expansion under the conditions of a kind of simulation confining pressure |
| CN111060284A (en) * | 2020-01-02 | 2020-04-24 | 中海石油(中国)有限公司 | Testing device and method for simulating proppant backflow after fracture closure |
| CN211978612U (en) * | 2020-01-17 | 2020-11-20 | 中国海洋石油集团有限公司 | Device for evaluating oil-water selectivity of filling particles |
| CN212985201U (en) * | 2020-07-24 | 2021-04-16 | 西南石油大学 | Visual simulation device for migration and deposition of pulverized coal on proppant filling layer |
| CN112267873A (en) * | 2020-09-22 | 2021-01-26 | 中国石油大学(华东) | Single-fracture profile control and flooding visualization experiment device and method for simulating formation conditions |
| CN112964603A (en) * | 2021-03-02 | 2021-06-15 | 中国石油大学(华东) | Fracture-cave carving multi-rock-disk acid liquid radial flow real-time imaging simulation system and working method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114113497B (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103645126B (en) | Stratum high-temperature high-pressure air-water phase percolation curve assay method | |
| CN102183796B (en) | Testing device and method for simulating backflow of propping agent | |
| CN113006759B (en) | Shale oil fracturing synchronous energization simulation experiment device and method | |
| US20220390342A1 (en) | Experimental device and method for supercritical co2/h2o mixed fluid huff and puff for shale oil development | |
| CN103674799B (en) | The device and method of a kind of mensurated gas composition axial diffusion coefficient in porous medium | |
| CN109138998A (en) | A kind of experimental test procedures of low permeability reservoir high temperature and pressure imbibition oil-recovering rate | |
| CN102587886A (en) | Testing device and testing method for flow conductivity of acid-eroded fractures | |
| CN110907334A (en) | Device and method for measuring radial flow oil-water relative permeability of conglomerate full-diameter core | |
| CN205063944U (en) | Three -dimensional physical simulation device of bottom water oil reservoir water energy | |
| CN105547848B (en) | A kind of mixing rock core test cabinet and mud stone breakthrough pressure test device | |
| CN110595953A (en) | Experimental test device and method for shale mixing wettability | |
| CN214576942U (en) | Experimental device for simulating low-permeability reservoir energy storage and permeability increase | |
| CN105784567A (en) | Equipment and method for testing relative permeability of rock core | |
| CN109668812B (en) | Proppant long-term diversion capability testing device and application method thereof | |
| CN113866069A (en) | Shale core permeability experiment device and method | |
| CN110161216A (en) | A kind of device and method measuring rock core irreducible water saturation | |
| CN102749277A (en) | Device for testing performance of cohesive soil sample and testing method thereof | |
| CN108956425B (en) | Device and method for measuring initial water permeability of extra-heavy oil reservoir | |
| CN109520884A (en) | Measure the experimental provision and experimental method of imbibition in the same direction Yu reversed imbibition produced quantity | |
| CN204436354U (en) | HTHP gas condensate reservoir note dry gas longitudinally involves efficiency test device | |
| CN114352238A (en) | Device and method for testing flow conductivity of natural gas hydrate production increasing seam | |
| CN108169098B (en) | Reasonable drainage and production speed simulation device for single-phase flow stage of coalbed methane vertical well | |
| CN212748663U (en) | Unsteady gas-water phase seepage testing device | |
| CN114113497B (en) | Experimental device and test method for evaluating fracturing performance of liquid phase-change propping agent | |
| CN105717255B (en) | Composite solvent soaking huff-puff circulation experiment device and simulated mining method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |