CN205063927U - Viscous crude thermal recovery horizontal section becomes mobile simulation experiment device of quality along journey - Google Patents

Abstract

The utility model is a simulation experiment device for variable mass flow along the horizontal well section of heavy oil thermal recovery, which includes a model cylinder body, and a closed space is formed inside the model cylinder body; the simulated wellbore is horizontally installed in the closed space from one end of the model cylinder body ; The first end of the simulated wellbore protrudes out of the model shell, and perforation or slotting is arranged on the simulated wellbore; Filling sand is filled between the simulated wellbore and the model shell; a channel is formed in the transition joint, and the seal of the transition joint is set At the first end of the simulated wellbore, and the channel communicates with the interior of the simulated wellbore; the injection pipeline includes a first injection end and a second injection end, and both the first injection end and the second injection end are provided with switch valves; the channels are connected by a sealing joint The injection pipeline; the first injection end extends into the channel, and the second injection end extends into the simulated wellbore. The utility model can simulate the variable mass flow characteristics along the horizontal section under different reservoir conditions, different pipe column forms, different gas outlet positions and different injected fluids.

Description

Simulation experiment device for variable mass flow along the horizontal well section in heavy oil thermal recovery

technical field

The utility model relates to the engineering research field of petroleum and geological oil and gas fields, in particular to a simulation experiment device for variable mass flow along a horizontal well section of heavy oil thermal recovery.

Background technique

Physical simulation is an important way to understand the reservoir development process and study the law of fluid flow. In oil reservoirs, injecting fluids into horizontal wells has the characteristic of variable mass flow along the way. Heavy oil reservoirs are different from conventional oil reservoirs. Due to the high viscosity of heavy oil, thermal recovery is mainly used for development, and steam injection development is the main development method. For heavy oil thermal recovery horizontal wells, whether it is injection of saturated steam or multiple thermal fluids, the variable mass flow characteristics along the horizontal well section has always been a key problem in the thermal recovery process of horizontal wells. This flow characteristic is mainly It is caused by the heterogeneity characteristics of the formation along the horizontal section, the flow characteristics of the holes, and the pressure loss characteristics along the wellbore. The variable mass flow characteristics along the horizontal well have a great influence on the dynamic analysis and productivity evaluation of the horizontal well, and play an important guiding role in exploring effective measures to improve the development effect of the horizontal well.

At present, the research on the characteristics of variable mass flow along the horizontal well is mostly focused on the research on the water flooding development process of light oil reservoirs. Among them, the numerical calculation of the variable mass flow law in the wellbore or the numerical simulation using commercial software are more. There is also a related wellbore physical model, but it cannot consider the comprehensive influence of steam and oil reservoir on the variable mass flow characteristics of the wellbore, and is not suitable for the physical simulation study of the variable mass flow characteristics along the horizontal section of the horizontal section of the thermal recovery of heavy oil. For the research on the characteristics of variable mass flow in the horizontal section of the horizontal section of the thermal recovery of heavy oil, the current research is not comprehensive enough, especially considering the injection fluid, the form of the pipe string, the location of the gas outlet point, and the heterogeneity of the formation in the horizontal section, etc. characteristics, the effect of variable mass flow characteristics. The available physical simulation experiment device has never been reported.

In order to more realistically simulate the variable mass flow characteristics along the horizontal section of the horizontal section of the thermal recovery of heavy oil, pure numerical calculation and commercial software simulation research cannot truly characterize the variable mass flow characteristics. Therefore, there is an urgent need for a physical model that can meet the conditions of geometric similarity, has multiple functions, satisfactory performance, and strong implementability.

Therefore, the utility model proposes a simulation experiment device for variable mass flow along the horizontal well section of heavy oil thermal recovery by virtue of years of experience and practice in related industries, so as to overcome the defects of the prior art.

Utility model content

The purpose of this utility model is to provide a simulation experiment device for variable mass flow along the horizontal well section of heavy oil thermal recovery, which can simulate different reservoir conditions, different pipe string forms, different gas outlet positions, and different injection fluids along the horizontal section. Process-varying mass flow characteristics.

The purpose of this utility model is achieved in that a kind of heavy oil thermal recovery horizontal well section along the variable mass flow simulation experiment device, the simulation experiment device includes:

A model cylinder, forming a closed space inside the model cylinder;

The simulated wellbore is horizontally installed in the enclosed space from one end of the model casing; the first end of the simulated wellbore protrudes outside the model casing, and the simulated wellbore is provided with perforations or Slits; filling sand is filled between the simulated wellbore and the model shell;

A conversion joint, a passage is formed in the conversion joint, the conversion joint is sealed at the first end of the simulated wellbore, and the passage communicates with the interior of the simulated wellbore;

An injection pipeline, the injection pipeline includes a first injection end and a second injection end, and the first injection end and the second injection end are provided with switch valves; the channel is connected to the injection pipeline through a sealing joint; the The first injection end extends into the channel, and the second injection end extends into the simulated wellbore.

In a preferred embodiment of the present utility model, the second end of the simulated wellbore protrudes outside the model casing; the transition joint includes a first transition joint and a second transition joint, and the first transition joint and the second transition joint The second transition joints are respectively sealed and arranged at the first end and the second end of the simulated wellbore; the channel of the second transition joint communicates with the inside of the simulated wellbore;

The injection pipeline also includes a third injection end and a fourth injection end, the third injection end and the fourth injection end are both provided with switch valves; the first injection end extends into the channel of the first conversion joint, The third injection end extends into the channel of the second transition joint, and both the second injection end and the fourth injection end extend into the simulated wellbore.

In a preferred embodiment of the present invention, a first channel and a second channel are formed in the conversion joint, the first channel and the second channel communicate with each other, and the first channel and the The second channel communicates with the inside of the simulated wellbore; the first channel and the second channel are respectively connected to the injection pipeline through a sealing joint.

In a preferred embodiment of the present utility model, a plurality of temperature sensors and a plurality of pressure sensors are sequentially arranged at intervals along the horizontal extension direction of the simulated wellbore, and the temperature sensors and pressure sensors are all connected to the data acquisition device; the A temperature sensor is arranged in the sand packing to measure the temperature of the sand packing along the horizontal extension direction, and the pressure sensor is connected to the simulated wellbore to measure the pressure of the fluid in the simulated wellbore along the horizontal extension direction.

In a preferred embodiment of the present utility model, the mold cylinder body is provided with a temperature sensor threaded hole, a pressure sensor threaded hole, and a liquid discharge threaded hole; the temperature sensor passes through the temperature sensor threaded hole and is placed Different positions of the sand; the pressure sensor is connected to the simulated wellbore through the pressure sensor threaded hole; the liquid drainage threaded hole is connected to the back pressure valve through a pipeline.

In a preferred embodiment of the present utility model, four rows of drain threaded holes are uniformly arranged around the model cylinder body, and each row of drain threaded holes is along the horizontal extension direction of the simulated wellbore. It is provided that the drain threaded hole is connected with a back pressure valve through a pipeline.

In a preferred embodiment of the present utility model, the model cylinder is in the shape of a cylinder, the model cylinder is placed horizontally, and both ends of the cylinder are closed by detachable flanges.

In a preferred embodiment of the present utility model, a plurality of temperature sensors and a plurality of pressure sensors are successively arranged at intervals along the horizontal extension direction of the simulated wellbore, and the temperature sensors and pressure sensors are all connected to the data acquisition device; the A temperature sensor is arranged in the sand packing to measure the temperature of the sand packing along the horizontal extension direction, and the pressure sensor is connected to the simulated wellbore to measure the pressure of the fluid in the simulated wellbore along the horizontal extension direction.

In a preferred embodiment of the present utility model, the mold cylinder body is provided with a temperature sensor threaded hole, a pressure sensor threaded hole, and a liquid discharge threaded hole; the temperature sensor passes through the temperature sensor threaded hole and is placed Different positions of the sand; the pressure sensor is connected to the simulated wellbore through the pressure sensor threaded hole; the liquid drainage threaded hole is connected to the back pressure valve through a pipeline.

In a preferred embodiment of the present utility model, four rows of drain threaded holes are uniformly arranged around the model cylinder body, and each row of drain threaded holes is along the horizontal extension direction of the simulated wellbore. It is provided that the liquid discharge threaded hole is connected to a back pressure valve through a pipeline; the model cylinder is in the shape of a cylinder, and the model cylinder is placed horizontally, and both ends of the cylinder are closed by detachable flanges.

From the above, the utility model solves the disadvantage that the existing physical model cannot simulate the flow characteristics of the horizontal section in different completion forms of the heavy oil thermal recovery horizontal well, and can selectively fill the filling sand and change the injection The position where the injection end of the pipeline extends into the simulated wellbore, the form of the simulated wellbore and the injected fluid are changed to realize the variable mass flow along the horizontal section under different reservoir conditions, different pipe string forms, different gas outlet positions, and different injected fluids. feature. Moreover, the manufacturing process is simple and reusable, which greatly reduces the experiment cost.

Description of drawings

The following drawings are only intended to illustrate and explain the utility model schematically, and do not limit the scope of the utility model. in:

Fig. 1: is the structural schematic diagram of a specific embodiment of the simulation experiment device of the present invention.

Fig. 2: is the schematic diagram of the first simulation experiment process of the utility model.

Fig. 3: It is the schematic diagram of the second and fourth simulation experiment process of the utility model.

Fig. 4: is the schematic diagram of the third simulation experiment process of the utility model.

Fig. 5 is a schematic diagram of the slotted simulated shaft of the utility model.

Fig. 6: A schematic diagram of using different types of filling sand for the utility model.

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation of the utility model is now described with reference to the accompanying drawings.

The utility model provides a simulation experiment device of variable mass flow along the horizontal well section of heavy oil thermal recovery, which is used for the variable mass flow characteristics of the horizontal section along the course under different reservoir conditions and different pipe string forms of heavy oil reservoir horizontal wells. Simulation experiment. The simulated experimental device includes a model barrel, a simulated wellbore, a conversion joint and an injection pipeline. A closed space is formed inside the model casing; the simulated wellbore is horizontally installed in the closed space from one end of the model casing; the first end of the simulated wellbore protrudes outside the model casing, and the other end of the simulated wellbore can extend to the model casing The outside can also be located in a closed space without protruding from the outside of the model cylinder, and the other end of the simulated wellbore can be blocked or opened as needed during the experiment. There are perforations or slots on the simulated wellbore; filling sand is filled between the simulated wellbore and the model casing. A passage is formed in the conversion joint, the conversion joint is sealed and arranged at the first end of the simulated wellbore, and the passage communicates with the inside of the simulated wellbore. The injection pipeline includes a first injection end and a second injection end, and the first injection end and the second injection end are provided with switch valves; the channel is connected to the injection pipeline through a sealed joint; the first injection end extends into the channel, and the second injection The end extends into the simulated wellbore.

The utility model can realize homogeneous (or heterogeneous) heavy oil reservoirs by selecting filling sands composed of different quartz sand particle sizes and different types of heavy oil; by using different combinations of injection pipelines and simulated wellbores, different string structures can be realized different forms of wellbore; different completion methods (perforation or slotting) can be realized by choosing different types of simulated wellbore; different gas injection point positions (heel end, toe end, The simulation of the middle part); the simulation of different injection fluids (steam, compound thermal fluid) is realized by choosing to inject different thermal fluids. The model has functional diversity and flexibility, and the manufacturing process of the simulated wellbore is simple and reusable, which greatly reduces the cost of the experiment.

As one of the implementations, both the first end and the second end of the simulated wellbore protrude out of the model casing, the conversion joint includes a first conversion joint and a second conversion joint, and the first conversion joint and the second conversion joint are respectively sealed It is arranged at the first end and the second end of the simulated wellbore; the channel of the second conversion joint is also communicated with the interior of the simulated wellbore; the injection pipeline also includes a third injection end and a fourth injection end, both of which are A switch valve is provided; the first injection end extends into the channel of the first conversion joint, the third injection end extends into the channel of the second conversion joint, and both the second injection end and the fourth injection end extend into the simulated wellbore middle.

This embodiment is for the convenience of use. The two ends of the simulated wellbore form a symmetrical structure. Experiments can be carried out by using either side. Only one end needs to be used during the experimental operation. The switch valve at the injection end connected to the conversion joint at the other end is closed. Can.

There can be only one channel in the above-mentioned conversion joint, or two channels, the first channel and the second channel, the first channel and the second channel communicate with each other, and the first channel and the second channel are connected to the inside of the simulated wellbore. Communication; the first channel and the second channel are respectively connected to the injection pipeline through the sealing joint. When only the first end of the simulated wellbore is provided with a conversion joint, the first injection end of the injection pipeline extends into the second passage, and the second injection end extends into the simulated wellbore through the first passage. When the first end and the second end of the simulated wellbore are provided with adapters, the first injection end extends into the second channel of the first adapter, and the third injection end extends into the second channel of the second adapter , the second injection end and the fourth injection end respectively extend into the simulated wellbore through the first channels of the first transition joint and the second transition joint.

A specific embodiment of the present utility model is described below in conjunction with accompanying drawing 1, and simulation experiment device comprises model cylinder body 1, flange plate 2, simulated shaft 3, filling sand 4, adapter 5, back pressure valve 6, temperature sensor 7, Pressure sensor 8, data acquisition device 9, high-pressure pipeline 10, oil pipe injection valve 11 (equivalent to on-off valve), casing injection valve 12 (equivalent to on-off valve). The model barrel 1 is cylindrical, and its wall is equidistantly distributed with 70 temperature sensor threaded holes, 10 pressure sensor threaded holes, 36 drain threaded holes, temperature sensor threaded holes, pressure sensor threaded holes, and liquid drain threaded holes They are arranged at intervals in sequence along the horizontal extension direction of the simulated wellbore, forming four rows uniformly distributed along the circumference of the model barrel 1 . There is an ear hole in the middle part of the flange 2, and the flange 2 is detachably mounted on both ends of the model cylinder 1 for sealing. The simulated wellbore 3 horizontally passes through the closed space in the model cylinder body 1, and the two ends of the simulated wellbore 3 respectively pass through the earholes in the middle of the flanges at both ends and form a seal with the earholes. Filling sand 4 is filled between the model casing 1 and the simulated wellbore 3 . The conversion joint 5 is sealed and installed at both ends of the simulated wellbore 3; the high-pressure pipeline 10 is used to simulate the injection pipeline and form each injection end, and the back pressure valve 6 is connected to the discharge threaded hole on the model cylinder 1 through the pipeline, so that the model cylinder The liquid in 1 can be discharged outside through the back pressure valve 6, the pressure of the back pressure valve 6 can be adjusted, and the pressure of the liquid discharge can be controlled by adjusting the pressure of the back pressure valve 6. The temperature sensor 7 is placed in different positions of the filling sand 4 through the threaded hole of the temperature sensor to measure the temperature of the filling sand along the horizontal extension direction; the pressure sensor 8 is connected to the simulated wellbore 3 through the pressure sensor threaded hole to measure the simulated temperature along the horizontal extension direction. The pressure of the fluid in the wellbore. Both the temperature sensor 7 and the pressure sensor 8 are connected with the data acquisition device 9 to realize automatic acquisition of real-time data.

According to the experimental requirements, the simulated wellbore 3 can simulate different well completion methods in the form of perforation or slotting, as shown in FIG. 5 , the simulated wellbore 3 in the form of slotting. The high-pressure pipeline 10 used for the simulated tubing (that is, the injection end extending into the injection pipe in the simulated wellbore) can be protruded into different positions in the simulated wellbore 3 to simulate different gas injection point positions. Correspondingly, the second injection end and the fourth injection end respectively extend into the simulated wellbore through the first channel of the first transition joint and the second transition joint.

As shown in Fig. 6, the filling sand 4 can adjust the filling method, filling type and filling degree according to the experimental needs to simulate homogeneous or heterogeneous reservoirs. Specifically, the length of the model casing 1 is 780mm, and the inner diameter is Φ150mm; the length of the simulated wellbore 3 is 960mm, and the inner diameter is Φ6.0mm; The simulated wellbore 3 has a slot length of 70mm and a width of 1.5mm; the inner diameter of the high-pressure pipeline used is Φ2.0mm.

Both the tubing injection valve 11 and the casing injection valve 12 are connected upstream to the steam generator and the gas injection pump; that is, the injection pipeline is connected to the steam generator and the gas injection pump, and the fluid injection operation is performed through each injection port. The downstream of the back pressure valve 6 is connected with the oil, gas and water metering system through pipelines.

Referring to Fig. 2 to Fig. 4, four kinds of experimental processes using the experimental device of the present utility model are illustrated.

Embodiment one

As shown in Figure 2, the high-pressure pipeline 10 (the second injection end or the fourth injection end) used to simulate the tubing extends into the heel of the simulated wellbore 3 (the left end in Figure 2), opens the tubing injection valve 11, and closes the casing injection Valve 12, the injected fluid enters the heel of the simulated wellbore 3 from the second injection port or the fourth injection port. This embodiment is used to simulate the thermal recovery of horizontal wells in homogeneous (or heterogeneous) heavy oil reservoirs. Variable mass flow process.

The experimental process: first assemble the experimental model, fill the model cylinder 1 with filling sand 4, set the pressure of the back pressure valve 6 to the pressure required for the experiment, and saturate the crude oil into the model cylinder 1. Next, extend the oil pipe (the second injection end or the fourth injection end) simulated by the high-pressure pipeline 10 to the heel of the simulated wellbore 3, open the oil pipe injection valve 11, close the casing injection valve 12, and inject high-temperature steam from the heel of the simulated wellbore 3 , while fluid flows from the drain line. After complete steam channeling, the experiment was stopped, the model was disassembled and cleaned, different filling sands, simulated wellbore forms and injection fluids were replaced, and the above experimental steps were repeated. During the experiment, the real-time temperature and pressure data inside the model were automatically recorded through the data acquisition device 9, and the liquid displacement along the horizontal section was recorded through the oil, gas and water metering system.

Embodiment two

As shown in Figure 3, the high-pressure pipeline 10 (the second injection end or the fourth injection end) used to simulate the tubing extends into the toe of the simulated wellbore 3 (the right end in Figure 3), opens the tubing injection valve 11, and closes the casing injection valve 12. This embodiment is used to simulate the thermal recovery of horizontal wells in homogeneous (or heterogeneous) heavy oil reservoirs. Variable mass flow process.

The experimental process: first assemble the experimental model, fill the model cylinder 1 with filling sand 4, set the pressure of the back pressure valve 6 to the pressure required for the experiment, and saturate the crude oil into the model cylinder 1. Next, extend the oil pipe simulated by the high-pressure pipeline 10 to the toe of the simulated wellbore 3, open the oil pipe injection valve 11, close the casing injection valve 12, inject high-temperature steam from the toe of the simulated wellbore 3, and at the same time, fluid flow out from the drainage pipeline. After complete steam channeling, the experiment was stopped, the model was disassembled and cleaned, different packing sands, simulated wellbore and injection fluid were replaced, and the above experimental steps were repeated. During the experiment, the real-time temperature and pressure data inside the model were automatically recorded through the data acquisition device 9, and the liquid displacement along the horizontal section was recorded through the oil, gas and water metering system.

Embodiment Three

As shown in FIG. 4 , the high-pressure pipeline 10 (the second injection end or the fourth injection end) used for the simulated tubing extends into the middle of the simulated wellbore 3 , the tubing injection valve 11 is opened, and the casing injection valve 12 is closed. This example is used to simulate the thermal recovery of horizontal wells in homogeneous (or heterogeneous) heavy oil reservoirs. Single string-perforation (or slotted) completion--injection of steam (or composite thermal fluid) in the middle part of the horizontal section along the variable quality flow process.

The experimental process: first assemble the experimental model, fill the model cylinder 1 with filling sand 4, set the pressure of the back pressure valve 6 to the pressure required for the experiment, and saturate the crude oil into the model cylinder 1. Next, the oil pipe simulated by the high-pressure pipeline 10 is extended to the middle of the simulated wellbore 3, the oil pipe injection valve 11 is opened, the casing injection valve 12 is closed, high-temperature steam is injected from the middle of the simulated wellbore 3, and fluid flows out from the drainage pipeline. After complete steam channeling, the experiment was stopped, the model was disassembled and cleaned, different packing sands, simulated wellbore and injection fluid were replaced, and the above experimental steps were repeated. During the experiment, the real-time temperature and pressure data inside the model were automatically recorded through the data acquisition device 9, and the liquid displacement along the horizontal section was recorded through the oil, gas and water metering system.

Embodiment four

As shown in FIG. 3 , the high-pressure pipeline 10 (the second injection end or the fourth injection end) used for the simulated tubing extends into the toe of the simulated wellbore 3 , and the tubing injection valve 11 and the casing injection valve 12 are opened. This embodiment is used for simulating the thermal recovery of horizontal wells in homogeneous (or heterogeneous) heavy oil reservoirs. Variable mass flow process.

The experimental process: first assemble the experimental model, fill the model cylinder 1 with filling sand 4, set the pressure of the back pressure valve 6 to the pressure required for the experiment, and saturate the crude oil into the model cylinder 1. Next, extend the oil pipe simulated by the high-pressure pipeline 10 to the toe of the simulated wellbore 3, open the oil pipe injection valve 11, inject high-temperature steam from the toe of the simulated wellbore 3, open the casing injection valve 12, and inject high-temperature steam from the heel of the simulated wellbore 3 , while fluid flows from the drain line. After complete steam channeling, the experiment was stopped, the model was disassembled and cleaned, different packing sands, simulated wellbore and injection fluid were replaced, and the above experimental steps were repeated. During the experiment, the real-time temperature and pressure data inside the model were automatically recorded through the data acquisition device 9, and the liquid displacement along the horizontal section was recorded through the oil, gas and water metering system.

From the above, the utility model can realize the simulation of homogeneous (or heterogeneous) heavy oil reservoirs by selecting filling sands composed of different quartz sand particle sizes and different types of heavy oil; by selectively combining casings and high-pressure pipelines Composing different simulation strings can realize the simulation of different string structures (single string, concentric double pipes); by choosing different types of casings, it can realize the simulation of different completion methods (perforation, slotting); by selecting Extend the high-pressure pipeline into different positions in the casing to realize the simulation of different gas outlet points (heel end, toe end, middle part); realize the simulation of different injection fluids (steam, composite thermal fluid) by injecting different thermal fluids. The experimental model has multiple functions and good flexibility, and the manufacturing process of the simulated wellbore is simple and reusable, which greatly reduces the cost of the experiment.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. heavy crude heat extraction net horizontal section is along a journey variable mass flow analogue experimental facilities, it is characterized in that, described analogue experiment installation comprises:

Model cylindrical shell, described model inner barrel forms an enclosure space;

Simulation wellbore hole, described simulation wellbore hole is located in described enclosure space from one end level of described model cylindrical shell; The first end of simulation wellbore hole reaches described model cylindrical shell outside, and described simulation wellbore hole is provided with perforation or slot; Back-up sand is filled with between described simulation wellbore hole and described model cylindrical shell;

Crossover sub, is formed with passage in described crossover sub, and described crossover sub sealing is arranged on the first end of described simulation wellbore hole, and described passage is communicated with described simulation wellbore hole inside;

Flow in pipes, described flow in pipes comprises the first injection end and the second injection end, and described first injection end and the second injection end are equipped with switch valve; Described passage connects described flow in pipes by seal nipple; Described first injection end extend in described passage, and described second injection end extend in described simulation wellbore hole.

2. heavy crude heat extraction net horizontal section as claimed in claim 1 is along journey variable mass flow analogue experimental facilities, it is characterized in that, the second end of simulation wellbore hole reaches described model cylindrical shell outside; Described crossover sub comprises the first crossover sub and the second crossover sub, and described first crossover sub and the second crossover sub seal the first end and the second end that are arranged on described simulation wellbore hole respectively; The passage of described second crossover sub is communicated with described simulation wellbore hole inside;

Described flow in pipes also comprises the 3rd injection end and the 4th injection end, and described 3rd injection end and the 4th injection end are equipped with switch valve; First injection end extend in the passage of described first crossover sub, and the 3rd injection end extend in the passage of described second crossover sub, and the second injection end and the 4th injection end all extend in described simulation wellbore hole.

3. heavy crude heat extraction net horizontal section as claimed in claim 1 or 2 is along journey variable mass flow analogue experimental facilities, it is characterized in that, first passage and second channel is formed in described crossover sub, described first passage and described second channel are interconnected, and described first passage is communicated with described simulation wellbore hole inside with described second channel; Described first passage is connected described flow in pipes with described second channel respectively by seal nipple.

4. heavy crude heat extraction net horizontal section as claimed in claim 1 or 2 is along journey variable mass flow analogue experimental facilities, it is characterized in that, horizontal-extending direction along described simulation wellbore hole arranges multiple temperature pick up and multiple pressure sensor in interval successively, and described temperature pick up is all connected with data acquisition unit with pressure sensor; Described temperature pick up is arranged in back-up sand the temperature measured along the back-up sand of horizontal-extending direction, and described pressure sensor is connected to the pressure described simulation wellbore hole measured along fluid in the simulation wellbore hole of horizontal-extending direction.

5. heavy crude heat extraction net horizontal section as claimed in claim 4 is along journey variable mass flow analogue experimental facilities, and it is characterized in that, described model cylindrical shell is provided with temperature pick up screwed hole, pressure sensor screwed hole, discharge opeing screwed hole; Described temperature pick up is placed in the diverse location of back-up sand through described temperature pick up screwed hole; Described pressure sensor is connected with described simulation wellbore hole through described pressure sensor screwed hole; Described discharge opeing screwed hole is connected with back-pressure valve by pipeline.

6. heavy crude heat extraction net horizontal section as claimed in claim 5 is along journey variable mass flow analogue experimental facilities, it is characterized in that, the surrounding of described model cylindrical shell is evenly provided with the described discharge opeing screwed hole of four row, and often arrange described discharge opeing screwed hole and arrange along the horizontal-extending direction of described simulation wellbore hole, described discharge opeing screwed hole connects a back-pressure valve by pipeline.

7. heavy crude heat extraction net horizontal section as claimed in claim 6 is along journey variable mass flow analogue experimental facilities, and it is characterized in that, described model cylindrical shell is cylinder barrel shaped, described model cylindrical shell horizontal positioned, and its two ends are all closed by the flange removably connected.

8. heavy crude heat extraction net horizontal section as claimed in claim 3 is along journey variable mass flow analogue experimental facilities, it is characterized in that, horizontal-extending direction along described simulation wellbore hole arranges multiple temperature pick up and multiple pressure sensor in interval successively, and described temperature pick up is all connected with data acquisition unit with pressure sensor; Described temperature pick up is arranged in back-up sand the temperature measured along the back-up sand of horizontal-extending direction, and described pressure sensor is connected to the pressure described simulation wellbore hole measured along fluid in the simulation wellbore hole of horizontal-extending direction.

9. heavy crude heat extraction net horizontal section as claimed in claim 8 is along journey variable mass flow analogue experimental facilities, and it is characterized in that, described model cylindrical shell is provided with temperature pick up screwed hole, pressure sensor screwed hole, discharge opeing screwed hole; Described temperature pick up is placed in the diverse location of back-up sand through described temperature pick up screwed hole; Described pressure sensor is connected with described simulation wellbore hole through described pressure sensor screwed hole; Described discharge opeing screwed hole is connected with back-pressure valve by pipeline.

10. heavy crude heat extraction net horizontal section as claimed in claim 9 is along journey variable mass flow analogue experimental facilities, it is characterized in that, the surrounding of described model cylindrical shell is evenly provided with the described discharge opeing screwed hole of four row, and often arrange described discharge opeing screwed hole and arrange along the horizontal-extending direction of described simulation wellbore hole, described discharge opeing screwed hole connects a back-pressure valve by pipeline; Described model cylindrical shell is cylinder barrel shaped, described model cylindrical shell horizontal positioned, and its two ends are all closed by the flange removably connected.