CN205206802U - Analog channel fracturing pump is annotated mode and is measured device of passageway rate - Google Patents
Analog channel fracturing pump is annotated mode and is measured device of passageway rate Download PDFInfo
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- CN205206802U CN205206802U CN201520955093.3U CN201520955093U CN205206802U CN 205206802 U CN205206802 U CN 205206802U CN 201520955093 U CN201520955093 U CN 201520955093U CN 205206802 U CN205206802 U CN 205206802U
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Abstract
The utility model relates to an analog channel fracturing pump is annotated mode and is measured device of passageway rate belongs to the technical field of oil gas field development, the device including injector pump, fracturing liquid bath 1, fracturing liquid bath 2, take sand device, mulling pond, press, support crack simulation room, displacement meter, liquid measure metering device and computer, injector pump and fracturing liquid bath 1, mulling pond and support crack simulation room and link to each other, are taken the sand device and are linked to each other with the mulling pond separately fracturing liquid bath 2, the press with support crack simulation room and link to each other, be equipped with the displacement meter on supporting crack simulation room, support crack simulation room and link to each other with liquid measure metering device, displacement meter, liquid measure metering device link to each other with the computer separately, the utility model discloses filled passageway fracturing pump notes process laboratory simulation process's blank, installed simple structure, be convenient for to operate.
Description
Technical field
The utility model relates to the device of a kind of analog channel pressure break infusion mode and Measurement channel rate, belongs to the technical field of oil-gas field development.
Background technology
Under the Tibetan exploitation of China's conventional gas and oil enters the prerequisite in later stage, the strategic position of the difficult exploitation reservoirs such as unconventionaloil pool Tibetan and fine and close oil-gas reservoir rises year by year.Hydraulic fracturing technology, as the technical measures developing hyposmosis, fine and close oil-gas reservoir now, is widely used in China, and has developed multiple fracturing technique with strong points for different formation characteristics and reservoir conditions.Namely passage fracturing technique is on the basis of conventional hydraulic fracturing technique, utilize many showers hole, mix the discontinuous injection of form that proppant rolls into a ball with proppant by note fiber and pulse infusion technology and support filling bed, in crack, form channel design, the type of flow of alter in crack also increases substantially the technology of filling bed flow conductivity.Passage fracturing technique has carried out lot of experiments and formal pressing crack construction in multinational different regions so far from the formal feasibility constructure scheme that proposes, and all achieves the achievement being better than conventional hydraulic pressure break.
The people such as Wen Qingzhi in " passage pressure break whaleback Study on regularity " first define channel rate be the unfilled area of proppant and supporting crack general wall area ratio in supporting crack, and propose and utilize software analysis to calculate the method for passage rate after the photo of shooting proppant distribution.Analyze actual fracture pattern, a cube model can be approximately, the physical significance of physical channel rate is in passage pressure break, do not fill the channel volume of proppant and the ratio of filling bed cumulative volume in proppant pack, and therefore on the basis of two dimensional surface, analysis and calculation passage rate all can cause certain error.
China at present to the research of passage fracturing technique still in the starting stage, lack system on actual formation fractured model to the measurement of important parameter each in passage pressure break and corresponding measurement mechanism.As a parameter very important in passage pressure break, passage rate directly reflects passage formational situation, indirectly reflection filling bed flow conductivity, and the research changed under clossing pressure passage rate is significant.
Utility model content
For above technical deficiency, the utility model provides the device of a kind of analog channel pressure break infusion mode and Measurement channel rate, to carry out the experiment of passage pressure break infusion in indoor, Measurement channel rate is with rules such as the migration of fracturing fluid and proppant in the change of clossing pressure and observation passage pressure break and distributions.
The technical solution of the utility model is as follows:
A device for analog channel pressure break infusion mode and Measurement channel rate, comprises injection pump, pressure break liquid pool 1, pressure break liquid pool 2, takes sand device, mulling pond, forcing press, supporting crack simulating chamber, displacement meter, liquid volume measurement device and computer;
Described injection pump is connected with supporting crack simulating chamber with pressure break liquid pool 1, mulling pond, described pressure break liquid pool 2, take sand device and be connected with mulling pond separately, described forcing press is connected with supporting crack simulating chamber, described supporting crack simulating chamber is provided with displacement meter, described supporting crack simulating chamber is connected with liquid volume measurement device, and described displacement meter, liquid volume measurement device are connected with computer separately.
The main purpose of injection pump is to provide infusion pressure so that fracturing fluid infusion is entered supporting crack simulating chamber, the main purpose of pressure break liquid pool 1 is configuration fracturing fluid, the main purpose of pressure break liquid pool 2 is mixed liquors of configuration fracturing fluid and fiber, the main purpose taking sand device carries proppant to enter mulling pond, the main purpose in mulling pond is by proppant and the fracturing fluid Homogeneous phase mixing mixing note fiber, the main purpose of forcing press is to provide the clossing pressure of simulation, the main purpose of supporting crack simulating chamber is to provide the structure of test channel rate change and simulates the migration of proppant group in crack, distribution and settlement law, the main purpose of displacement meter is the change in displacement that measurement supporting crack simulating chamber produces under forcing press, the main purpose of liquid volume measurement device is that of the fracturing fluid volume is discharged in metering, the main purpose of computer is according to change in displacement and the change of discharging fracturing fluid volume computing passage rate.
Preferred according to the utility model, described in take sand device and comprise screw pump, screw rod, take advantage of sand pond and unload sand mouth, screw rod is connected with screw pump, and screw rod is positioned at takes advantage of Sha Chizhong, and unload sand mouth and be positioned at and take advantage of Sha Chi one end, the sediment transport mode taking sand device is screw rod rotation sediment transport.
Preferred according to the utility model, described mulling pond comprises proppant import, fracturing fluid import, agitator, mixing pump, liquid outlet, and agitator is connected with mixing pump.Agitator is for stirring the object in mulling pond.
Preferred further, described agitator comprises agitator 1, agitator 2, and mixing pump comprises agitator 1 pump, agitator 2 pump.
Preferred according to the utility model, described supporting crack simulating chamber comprises sidewall, upper piston, lower piston, is positioned at the upper cover plate on upper piston top and is positioned at the lower cover of lower piston bottom, upper piston and lower piston are positioned at sidewall, filling bed is formed between upper piston and lower piston, the top edge of described lower piston and the lower limb of upper piston are respectively arranged with O-ring seal, and sidewall two ends are respectively equipped with inlet and leakage fluid dram.
Preferred further, filling bed height is 0.5-1.5cm.
Preferred further, be between upper piston with upper cover plate, between lower piston with lower cover and be threaded.
Preferred further, the leakage fluid dram of described supporting crack simulating chamber is provided with self-locking structure, and described self-locking structure is that laterally zygomorphic zigzag is protruding, and zigzag convexes to form serrated channels.Self-locking structure is according to Jamin effect design, Jamin effect is a kind of drag effect: bubble or oil droplet are when by tiny pore constriction, because the semidiameter of duct and venturi makes the cambered surface capillary force at bubble or oil droplet two ends show as resistance, must elongate to the venturi less by radius and change shape, this distortion will consume part energy, thus slow down bubble or oil droplet motion, increase extra resistance, this phenomenon is called Jamin effect.By self-locking structure, can not flow out from leakage fluid dram in infusion process and lower than maintaining the fluid with certain viscosity under clossing pressure.
Preferred further, the sidewall of described supporting crack simulating chamber is the sidewall that fiberglass-reinforced plastic is made, and the compressive strength of sidewall is 90MPa.
Further preferred, the material of the upper cover plate of described supporting crack simulating chamber, lower cover, upper piston, lower piston is 4Cr13 stainless steel.
Preferred according to the utility model, described displacement meter comprises displacement meter a and displacement meter b, and displacement meter is connected with computer by displacement data converter.Arranging two displacement meters makes displacement measurement more accurate.
Preferred according to the utility model, described liquid volume measurement device comprises electronic measurement instrument and converter.Electronic measurement instrument automatic gauge data, converter is connected with computer, and converter imports record data into computer.
Preferred according to the utility model, the power of described injection pump is 200w.
Utilize said apparatus analog channel pressure break infusion mode and the method for Measurement channel rate to comprise step as follows:
(1) supporting crack simulating chamber sidewall and lower piston, base plate is connected, connect supporting crack simulating chamber sidewall and upper piston, base plate, connect injection pump, pressure break liquid pool 1, mulling pond and supporting crack simulating chamber, by pressure break liquid pool 2, take sand device and be connected with mulling pond, forcing press is connected with supporting crack simulating chamber, supporting crack simulating chamber is connected with liquid volume measurement device, displacement meter, liquid volume measurement device is connected with computer, checks the seal of whole device;
(2) configure fracturing fluid by a certain percentage in pressure break liquid pool 1, configuring by a certain percentage containing mixing the fracturing fluid of note fiber in pressure break liquid pool 2, choosing required proppant and being placed in and taking sand device;
(3) connect pressure break liquid pool 2, take sand device and mulling pond, open the mixing pump in screw pump and the mulling pond taking sand device;
(4) injection pump is opened, alternately open the interface of the interface of pressure break liquid pool 1 and injection pump, mulling pond and injection pump, formed the fracturing fluid of not taking sand with containing mix note fiber take the liquid stream that sand fracturing fluid pulsed injects, the migration of being rolled into a ball in simulation fracture filling bed by the sidewall observation passage fracturing propping agents of supporting crack simulating chamber, distribution and settlement law;
(5) controlled pressure machine brings pressure to bear on supporting crack simulating chamber with the clossing pressure preset, by displacement meter and liquid volume measurement device image data upper piston displacement l and discharge liquid measure V
row;
(6) data that arrive according to Real-time Collection of computer, carry out following computational process, Measurement channel rate:
V
fill out=V
?+ V
fracturing fluid(2)
V '
fill out=V
fill out-lS
fill out(4)
V '
?=V '
fill out-V
fracturing fluid+ V
row(5)
(4) (5) being brought into (3), can to obtain derivation formula (6) as follows,
Wherein, CR-initial channel rate; V
?-initial support agent group amasss, and initial support agent group is long-pending experimentally to be needed setting and quantitatively add by taking sand device; V
fill out-initial filling bed volume; V
fracturing fluid-initial fracturing fluid volume; Passage rate after CR '-pressure; V '
?-pressure rear support agent group amasss; V '
fill outfilling bed volume after-pressure; S
fill out-filling bed bearing area; V
row-discharge liquid measure; L-upper piston displacement;
Wherein, filling bed bearing area S
fill outcan calculate according to supporting crack simulating chamber specification; Upper piston displacement l can be obtained by displacement meter record; Initial filling bed volume V
fill outcan by filling bed bearing area S
fill out, filling bed high computational obtains, filling bed height can directly measure; Initial fracturing fluid volume V
fracturing fluidcan according to initial filling bed volume V
fill outand initial support agent group is long-pending calculates, that is: V
fracturing fluid=V
fill out-V
?; Discharge liquid measure V
rowcan be measured by liquid volume measurement device.
(7) change the clossing pressure of described forcing press, repeat step (5) ~ (7), test the change of different clossing pressure lower channel rate;
(8) cleaning plant, changes the ratio and sanding concentration of mixing note fiber, repeats step (1) ~ (7).
The beneficial effects of the utility model are:
1. the technical solution of the utility model has filled up the blank that passage pressure break infusion process can not carry out laboratory simulation process, devises a set of can simulation and enters from mulling to fracturing fluid infusion the system that formation fracture also observes the overall process in the change of different clossing pressure lower support agent group;
2. the utility model proposes the three-dimensional channel rate measuring method that meets formation fracture actual form and devise a set of corollary equipment;
3. simple, the convenient operation of apparatus structure described in the utility model, the experimental technique provided is practical, successfully simulate and enter formation fracture from mulling to fracturing fluid infusion and the overall process having observed the change of different clossing pressure lower support agent group, measure the change of different clossing pressure lower channel rate.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram of analog channel pressure break infusion mode described in the utility model and Measurement channel rate;
Fig. 2 described in the utility modelly takes sand apparatus structure schematic diagram;
To be that mulling pond described in the utility model is main look perspective diagram to Fig. 3;
Fig. 4 is mulling pond described in the utility model schematic top plan view;
Fig. 5 is supporting crack simulating chamber schematic top plan view described in the utility model;
Fig. 6 is supporting crack simulating chamber schematic front view described in the utility model;
Fig. 7 is supporting crack simulating chamber schematic side view described in the utility model;
Fig. 8 is A-A generalized section in Fig. 5;
Fig. 9 is B-B generalized section in Fig. 5;
In Fig. 1-9,1-injection pump; 2-pressure break liquid pool 1; 3-mulling pond; 4-take sand device; 5-pressure break liquid pool 2; 6-displacement meter; 7-forcing press; 8-supporting crack simulating chamber; 9-computer; 10-liquid volume measurement device; 11-take advantage of sand pond; 12-screw pump; 13-screw rod; 14-unload sand mouth; The import of 15-fracturing fluid; The import of 16-proppant; 17-agitator 1 pump; 18-agitator 1; 19-agitator 2 pump; 20-agitator 2; 21-liquid outlet; 22-blow vent; 23-upper cover plate; 24-sidewall; 25-lower cover; 26-O-ring seal; 27-inlet; 28-upper piston; 29-lower piston; 30-self-locking structure; 31-leakage fluid dram; 32-filling bed.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, the utility model is described in detail, but is not limited thereto.
As shown in figs 1-9:
Embodiment 1,
A device for analog channel pressure break infusion mode and Measurement channel rate, as shown in Figure 1, comprises injection pump, pressure break liquid pool 1, pressure break liquid pool 2, takes sand device, mulling pond, forcing press, supporting crack simulating chamber, displacement meter, liquid volume measurement device and computer;
Injection pump is connected with supporting crack simulating chamber with pressure break liquid pool 1, mulling pond, pressure break liquid pool 2, take sand device and be connected with mulling pond separately, forcing press is connected with supporting crack simulating chamber, supporting crack simulating chamber is provided with displacement meter, supporting crack simulating chamber is connected with liquid volume measurement device, and displacement meter, liquid volume measurement device are connected with computer separately.
Injection pump is in order to provide infusion pressure so that load fluid infusion is entered supporting crack simulating chamber, pressure break liquid pool 1 is in order to configure fracturing fluid, pressure break liquid pool 2 is in order to configure the mixed liquor of fracturing fluid and fiber, take sand device and enter mulling pond in order to carry proppant, mulling pond in order to by proppant and mix note fiber fracturing fluid Homogeneous phase mixing, forcing press is in order to provide the clossing pressure of simulation, supporting crack simulating chamber is in order to the structure that provides test channel rate and change and simulate the migration of proppant group in crack, distribution and settlement law, displacement meter is in order to measure the change in displacement of upper piston, liquid volume measurement device discharges of the fracturing fluid volume in order to metering, computer is in order to the change according to change in displacement and discharge fracturing fluid volume computing passage rate.
Concrete, supporting crack simulating chamber mainly comprises sidewall, upper piston, lower piston, is positioned at the upper cover plate on upper piston top and is positioned at the lower cover of lower piston bottom, as shown in figures 5-9, be between upper piston with upper cover plate, between lower piston with lower cover and be threaded, upper piston and lower piston are positioned at sidewall, form filling bed between upper piston and lower piston, filling bed height is 0.5-1.5cm; The top edge of lower piston and the lower limb of upper piston are respectively arranged with O-ring seal, and sidewall two ends are respectively equipped with inlet and leakage fluid dram, and upper cover plate is provided with displacement meter; Measured by liquid volume measurement device and discharge liquid measure V
row, data inputting computer, draws the changing value of passage rate by the passage rate change calculations program in computer.The sidewall of supporting crack simulating chamber is the sidewall that fiberglass-reinforced plastic is made, and the compressive strength of sidewall is 90MPa.The upper and lower cover plates of supporting crack simulating chamber and the material of piston are 4Cr13 stainless steel, and the power of injection pump is 200w.
Embodiment 2,
The device of a kind of analog channel pressure break infusion mode and Measurement channel rate, its structure as described in Example 1, difference is, further, take sand device to comprise screw pump, screw rod, take advantage of sand pond and unload sand mouth, as shown in Figure 2, screw rod is connected with screw pump, screw rod is positioned at takes advantage of Sha Chizhong, unloads sand mouth and is positioned at and takes advantage of Sha Chi one end, and the sediment transport mode taking sand device is that screw rod rotates sediment transport.
Embodiment 3,
The device of a kind of analog channel pressure break infusion mode and Measurement channel rate, its structure as described in Example 1, difference is, further, mulling pond comprises proppant import, fracturing fluid import, agitator 1, agitator 2, agitator 1 pump, agitator 2 pump, liquid outlet, blow vent, as shown in Figure 3-4, agitator 1 is connected with agitator 1 pump, and agitator 2 is connected with agitator 2 pump.Agitator 1, agitator 2 are for stirring the object in mulling pond.
Embodiment 4,
The device of a kind of analog channel pressure break infusion mode and Measurement channel rate, its structure as described in Example 1, difference is, further, the leakage fluid dram of supporting crack simulating chamber is provided with self-locking structure, and described self-locking structure is that laterally zygomorphic zigzag is protruding, zigzag convexes to form serrated channels, as shown in Figure 8, self-locking structure place local enlargement display in Fig. 8, leaves slight distance between zigzag projection opposing upper and lower.Self-locking structure is according to Jamin effect design, Jamin effect is a kind of drag effect: bubble or oil droplet are when by tiny pore constriction, because the semidiameter of duct and venturi makes the cambered surface capillary force at bubble or oil droplet two ends show as resistance, must elongate to the venturi less by radius and change shape, this distortion will consume part energy, thus slow down bubble or oil droplet motion, increase extra resistance, this phenomenon is called Jamin effect.By self-locking structure, the fracturing fluid that can maintain about viscosity 200mPas in infusion process under lower than 5MPa pressure does not flow out from leakage fluid dram.
Embodiment 5,
A device for analog channel pressure break infusion mode and Measurement channel rate, as described in Example 1, difference is its structure, and further, displacement meter comprises displacement meter a and displacement meter b, and displacement meter is connected with computer by data converter.Arrange two displacement meters, the data averaged of measurement is upper piston displacement, makes displacement measurement more accurate.
Embodiment 6,
A device for analog channel pressure break infusion mode and Measurement channel rate, as described in Example 1, difference is its structure, and further, liquid volume measurement device comprises electronic measurement instrument and converter.Electronic measurement instrument automatic gauge data, converter imports record data into computer.
Embodiment 7,
A device for analog channel pressure break infusion mode and Measurement channel rate, as described in Example 6, difference is its structure, and liquid volume measurement device is graduated cylinder.Use graduated cylinder human metering and manually in computer, input data.
Embodiment 8,
Utilize a method of work for the device described in embodiment 1-7 any one embodiment, comprise step as follows:
(1) supporting crack simulating chamber sidewall and lower piston, base plate is connected, connect supporting crack simulating chamber sidewall and upper piston, base plate, connect injection pump, pressure break liquid pool 1, mulling pond and supporting crack simulating chamber, by pressure break liquid pool 2, take sand device and be connected with mulling pond, forcing press is connected with supporting crack simulating chamber, supporting crack simulating chamber is connected with liquid volume measurement device, the displacement meter on forcing press, liquid volume measurement device is connected with computer, checks the seal of whole device;
(2) configure fracturing fluid in pressure break liquid pool 1 by YF125HTD fracturing fluid system, configuring containing mixing the fracturing fluid of note fiber in pressure break liquid pool 2 by the note proportion of fibers of mixing of YF125HTD system and 10%, getting 20/40 order ceramsite propping agent in taking in sand device;
(3) connect pressure break liquid pool 2, take sand device and mulling pond, open the mixing pump in screw pump and the mulling pond taking sand device;
(4) injection pump is opened, alternately open the interface of the interface of pressure break liquid pool 1 and injection pump, mulling pond and injection pump, formed the fracturing fluid of not taking sand with mix be marked with fiber take the liquid stream that sand fracturing fluid pulsed injects, examine the migration of passage fracturing propping agents group in crack, distribution and settlement law by the transparent side standing motionless as if facing a wall of supporting crack simulating chamber, control filling bed thickness 1.0cm;
(5) controlled pressure machine brings pressure to bear on supporting crack simulating chamber, by displacement meter and liquid volume measurement device image data with the clossing pressure preset: upper piston displacement l and discharge liquid measure V
row;
(6) data that arrive according to Real-time Collection of computer, according to following computational process:
V
fill out=V
?+ V
fracturing fluid(2)
V '
fill out=V
fill out-lS
fill out(4)
V '
?=V '
fill out-V
fracturing fluid+ V
row(5)
(4) (5) being brought into (3), can to obtain derivation formula (6) as follows,
Wherein, CR-initial channel rate; V
?-initial support agent group amasss, and initial support agent group is long-pending experimentally to be needed setting and quantitatively add by taking sand device; V
fill out-initial filling bed volume; V
fracturing fluid-initial fracturing fluid volume; Passage rate after CR '-pressure; V '
?-pressure rear support agent group amasss; V '
fill outfilling bed volume after-pressure; S
fill out-filling bed bearing area; V
row-discharge liquid measure; L-upper piston displacement;
Wherein, filling bed bearing area S
fill outcan calculate according to supporting crack simulating chamber specification; Upper piston displacement l can be obtained by displacement meter record; Initial filling bed volume V
fill outcan by filling bed bearing area S
fill out, filling bed high computational obtains, filling bed height can directly measure; Initial fracturing fluid volume V
fracturing fluidcan according to initial filling bed volume V
fill outand initial support agent group is long-pending calculates, that is: V
fracturing fluid=V
fill out-V
?; Discharge liquid measure V
rowcan be measured by liquid volume measurement device.
(7) progressively change described forcing press clossing pressure (5,10,20,30,40,50,60,70MPa), repeat step (5) ~ (7), test the change of different clossing pressure lower channel rate;
(8) cleaning plant, changes the ratio and sanding concentration of mixing note fiber, changes sanding concentration and namely changes proppant group ratio when initial filling bed constancy of volume, repeat step (1) ~ (7).
After carrying out above step (1) ~ (8), the data such as ratio, clossing pressure, upper piston displacement, discharge liquid measure of note fiber mixed in record respectively, the passage rate under different proppant group proportion, the ratio of mixing note fiber and clossing pressure is calculated, as shown in table 1,2,3 according to formula (6):
When setting proppant group ratio is 60%, namely set V
?/ V
fill outbe 60%, now, initial channel rate when not yet applying clossing pressure is 40%, utilizes the device that the utility model provides, carries out operating procedure, draw table 1 data:
Table 1: data when proppant group ratio is 60%
When setting proppant group ratio is 70%, namely set V
?/ V
fill outbe 70%, now, initial channel rate when not yet applying clossing pressure is 30%, utilizes the device that the utility model provides, carries out operating procedure, draw table 2 data:
Table 2: data when proppant group ratio is 70%
When setting proppant group ratio is 80%, namely set V
?/ V
fill outbe 80%, now, initial channel rate when not yet applying clossing pressure is 20%, utilizes the device that the utility model provides, carries out operating procedure, draw table 3 data:
Table 3: data when proppant group ratio is 80%
Claims (10)
1. the device of an analog channel pressure break infusion mode and Measurement channel rate, it is characterized in that, comprise injection pump, pressure break liquid pool 1, pressure break liquid pool 2, take sand device, mulling pond, forcing press, supporting crack simulating chamber, displacement meter, liquid volume measurement device and computer;
Described injection pump is connected with supporting crack simulating chamber with pressure break liquid pool 1, mulling pond, described pressure break liquid pool 2, take sand device and be connected with mulling pond separately, described forcing press is connected with supporting crack simulating chamber, described supporting crack simulating chamber is provided with displacement meter, described supporting crack simulating chamber is connected with liquid volume measurement device, and described displacement meter, liquid volume measurement device are connected with computer separately.
2. the device of analog channel pressure break infusion mode according to claim 1 and Measurement channel rate, it is characterized in that, described sand device of taking comprises screw pump, screw rod, takes advantage of sand pond and unload sand mouth, screw rod is connected with screw pump, screw rod is positioned at takes advantage of Sha Chizhong, unload sand mouth to be positioned at and to take advantage of Sha Chi one end, the sediment transport mode taking sand device is that screw rod rotates sediment transport.
3. the device of analog channel pressure break infusion mode according to claim 1 and Measurement channel rate, is characterized in that, described mulling pond comprises proppant import, fracturing fluid import, agitator, mixing pump, liquid outlet, and agitator is connected with mixing pump.
4. the device of analog channel pressure break infusion mode according to claim 3 and Measurement channel rate, is characterized in that, described agitator comprises agitator 1, agitator 2, and mixing pump comprises agitator 1 pump, agitator 2 pump.
5. the device of analog channel pressure break infusion mode according to claim 1 and Measurement channel rate, it is characterized in that, described supporting crack simulating chamber comprises sidewall, upper piston, lower piston, be positioned at the upper cover plate on upper piston top and be positioned at the lower cover of lower piston bottom, between upper piston and upper cover plate, be between lower piston with lower cover and be threaded, upper piston and lower piston are positioned at sidewall, filling bed is formed between upper piston and lower piston, the top edge of described lower piston and the lower limb of upper piston are respectively arranged with O-ring seal, sidewall two ends are respectively equipped with inlet and leakage fluid dram.
6. the device of analog channel pressure break infusion mode according to claim 5 and Measurement channel rate, is characterized in that, filling bed height is 0.5-1.5cm.
7. the device of analog channel pressure break infusion mode according to claim 5 and Measurement channel rate, it is characterized in that, the leakage fluid dram of described supporting crack simulating chamber is provided with self-locking structure, and described self-locking structure is that laterally zygomorphic zigzag is protruding, and zigzag convexes to form serrated channels.
8. the device of analog channel pressure break infusion mode according to claim 5 and Measurement channel rate, is characterized in that, the sidewall of described supporting crack simulating chamber is the sidewall that fiberglass-reinforced plastic is made, and the compressive strength of sidewall is 90MPa.
9. the device of analog channel pressure break infusion mode according to claim 1 and Measurement channel rate, is characterized in that, described displacement meter comprises displacement meter a and displacement meter b, and displacement meter is connected with computer by displacement data converter.
10. the device of analog channel pressure break infusion mode according to claim 1 and Measurement channel rate, is characterized in that, described liquid volume measurement device comprises electronic measurement instrument and converter.
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644734A (en) * | 2016-11-29 | 2017-05-10 | 中国石油大学(北京) | True tri-axial hydraulic fracture test machine and test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106644734A (en) * | 2016-11-29 | 2017-05-10 | 中国石油大学(北京) | True tri-axial hydraulic fracture test machine and test method |
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