Heating device for simulating oil reservoir formation temperature
By using an annular heating chamber and spiral plate structure in the heating device, combined with the rolling heat dissipation mechanism of the alumina ceramic ball, the problem of slow cooling of the core heating device is solved, and rapid heat dissipation and efficient utilization of laboratory equipment are achieved.
Patent Information
- Application Number
- CN202521460902.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-14
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2035-07-14
AI Technical Summary
The existing core heating device has a slow cooling process after the experiment is completed, resulting in a time-consuming and long cooling of continuous experiments, affecting the efficiency of equipment use.
The annular heating chamber and spiral plate structure are adopted, combined with the rolling heat dissipation mechanism of the alumina ceramic ball, and the spiral plate is used to extend the movement stroke of the alumina ceramic ball in the heating chamber, and the ceramic ball is used to absorb heat and drive gas out to speed up the heat dissipation process of the heating device.
It effectively reduces the cooling time of multiple consecutive sets of experiments, shortens the cooling idle time of the heating device, and improves the use efficiency of laboratory equipment.
Smart Images
Figure CN223244126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating for simulating oil reservoir stratum temperature, in particular to a heating device for simulating oil reservoir stratum temperature. Background Art
[0002] In the exploration and development research of the petroleum industry, especially in experimental fields such as enhanced oil recovery, heavy oil thermal recovery, and chemical flooding, accurately simulating the formation temperature environment of underground reservoirs is crucial. Laboratory core holders are often used for displacement experiments, which require precise heating and temperature control of the core samples to simulate the temperature conditions of actual reservoirs (including constant temperature or temperature gradient). Existing core heating devices generally use the following methods:
[0003] 1. Integral constant temperature box heating: The entire core holder is placed in a constant temperature box. This method has relatively low temperature control accuracy, making it difficult to form an accurate linear temperature gradient inside the core. The heating and cooling speeds are slow, and when conducting multiple consecutive experiments, the waiting time for the device to cool down is long, resulting in low efficiency.
[0004] 2. Wire-wound heating: Directly wrapping the heating wire around the outer wall of the core holder provides higher power, but the heating uniformity is poor. This method can easily form local hot spots at the contact point between the core and the holder wall, causing thermal cracking or carbonization of the core sample (especially cores with high organic matter content), affecting the accuracy of the experimental results. In addition, heat dissipation mainly relies on natural cooling, which is also inefficient.
[0005] 3. Circulating fluid bath heating: Circulate a heating fluid (such as oil or water) within the holder jacket. This method provides better temperature uniformity, but also faces the problem of long cooling time between experiments;
[0006] Therefore, after the experiment, the cooling process of the heating device is relatively slow, which not only increases the cooling time of multiple consecutive experiments, but also greatly prolongs the idle time of the heating device during cooling when laboratory equipment is shared, reducing the equipment's utilization efficiency.
[0007] Therefore, it is necessary to provide a new heating device for simulating reservoir formation temperature to solve the above technical problems. Utility Model Content
[0008] In order to solve the above technical problems, the utility model provides a heating device for simulating oil reservoir formation temperature.
[0009] The heating device for simulating reservoir formation temperature provided by the utility model comprises a heating cylinder, an annular heating cavity is provided in the heating cylinder, and three annular heating plates equidistantly distributed vertically are fixedly embedded in the outer wall of the annular heating cavity;
[0010] A spiral plate is installed in the annular heating chamber, and the inner plate wall of the spiral plate is fixedly connected to the inner ring wall of the annular heating chamber;
[0011] A storage tank is fixedly mounted on the heating cylinder, and alumina ceramic balls are stored in the storage tank;
[0012] The heating device for simulating reservoir formation temperature also includes a protective component, which includes an air inlet pipe and an exhaust pipe. The air inlet pipe and the exhaust pipe are distributed up and down and are fixedly installed on the heating cylinder and connected to the annular heating chamber, and a circulation A pump is installed on the exhaust pipe.
[0013] Preferably, each of the annular heating plates is equipped with a ceramic terminal.
[0014] Preferably, the discharge port of the storage tank is connected to the conical feed port opened at the top of the heating cylinder, and the conical feed port is connected to the annular heating chamber. A control A valve is installed on the discharge port of the storage tank, a conical discharge port is opened at the bottom of the heating cylinder, and solenoid valves are installed on both the conical feed port and the conical discharge port.
[0015] Preferably, solenoid valves are installed on the pipe walls of the air inlet pipe and the exhaust pipe close to the heating cylinder.
[0016] Preferably, the heating device for simulating the reservoir formation temperature also includes a fluid heat conductor, and the fluid heat conductor includes a feed pipe and a discharge pipe, and the feed pipe and the discharge pipe are distributed up and down and are fixedly mounted on the heating cylinder and are interconnected with the annular heating chamber, and a circulation B pump is installed on the discharge pipe, and a circulation pipe that is interconnected with the feed pipe is fixedly mounted on the outlet of the circulation B pump, and the pipe head of the feed pipe is connected to the material guide pipe through a three-way pipe, and a control B valve is fixedly mounted on the material guide pipe.
[0017] Preferably, solenoid valves are installed on the pipe walls of the feed pipe and the discharge pipe close to the heating cylinder.
[0018] Compared with related technologies, the heating device for simulating reservoir formation temperature provided by the present invention has the following beneficial effects:
[0019] After the experiment is completed, the utility model opens the control valve A to allow the alumina ceramic balls to roll down along the spiral plate. The alumina ceramic balls absorb the heat in the annular heating chamber while rolling, and the rolling alumina ceramic balls drive the internal gas to flow out from the conical discharge port, thereby greatly accelerating the heat dissipation effect of the heating tube. Since the spiral plate extends the movement stroke of the alumina ceramic balls in the annular heating chamber, the heat dissipation effect of the alumina ceramic balls on the heating tube is further improved, effectively reducing the cooling time of the heating device when performing multiple sets of experiments in a row, and can greatly shorten the idle time of the heating device during cooling when laboratory equipment is shared. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic structural diagram of a preferred embodiment of a heating device for simulating oil reservoir formation temperature provided by the present invention;
[0021] Figure 2 for Figure 1 Schematic diagram of the installation structure of the annular heating plate and the spiral plate in the heating cylinder.
[0022] Numbers in the figure: 1. Heating cylinder; 1a. Annular heating chamber; 1b. Conical feed port; 1c. Conical discharge port; 2. Annular heating plate; 21. Ceramic terminal; 3. Spiral plate; 4. Storage tank; 5. Alumina ceramic ball; 6. Control valve A; 7. Protective component; 71. Inlet pipe; 72. Exhaust pipe; 73. Circulation pump A; 8. Fluid heat conductor; 81. Feed pipe; 82. Discharge pipe; 83. Circulation pump B; 84. Circulation pipe; 85. Material guide pipe; 86. Control valve B. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.
[0025] Example 1:
[0026] See also Figures 1 to 2 The embodiment of the present invention provides a heating device for simulating the temperature of an oil reservoir formation. The heating device for simulating the temperature of an oil reservoir formation includes a heating tube 1, an annular heating plate 2, a spiral plate 3 and an alumina ceramic ball 5.
[0027] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The heating cylinder 1 has an annular heating chamber 1a formed therein, and three annular heating plates 2 equidistantly spaced vertically are fixedly mounted on the outer wall of the annular heating chamber 1a. Each annular heating plate 2 is provided with a ceramic terminal 21, which is electrically connected to an external controller, and the external controller is used to control the heat load of each annular heating plate 2.
[0028] A spiral plate 3 is installed in the annular heating chamber 1a, and the inner plate wall of the spiral plate 3 is fixedly connected to the inner ring wall of the annular heating chamber 1a, and a storage tank 4 is fixedly installed on the heating cylinder 1, and alumina ceramic balls 5 are stored in the storage tank 4. The discharge port of the storage tank 4 is connected to the conical feed port 1b opened at the top of the heating cylinder 1, and the conical feed port 1b is connected to the annular heating chamber 1a. A control A valve 6 is installed on the discharge port of the storage tank 4, and a conical discharge port 1c is opened at the bottom of the heating cylinder 1, and solenoid valves are installed on the conical feed port 1b and the conical discharge port 1c.
[0029] It should be noted that the heating tube 1 is sleeved on the sample tube of the core holder and fixedly connected, and the three-section annular heating plate 2 is provided to achieve uniform heating or linear gradient heating of the sample in the sample tube.
[0030] It should also be noted that: after the experiment is completed, the solenoid valves on the conical feed port 1b and the conical discharge port 1c and the control A valve 6 are opened, so that the alumina ceramic balls 5 in the storage tank 4 can roll down along the spiral plate 3, and the alumina ceramic balls 5 absorb the heat in the annular heating chamber 1a while rolling down, and the rolling alumina ceramic balls 5 drive the internal gas to flow out from the conical discharge port 1c, thereby greatly accelerating the heat dissipation effect of the heating tube 1. Since the spiral plate 3 extends the movement stroke of the alumina ceramic balls 5 in the annular heating chamber 1a, the heat dissipation effect of the alumina ceramic balls 5 on the heating tube 1 is further improved. Therefore, the cooling time of the heating device when performing multiple sets of experiments in a row is reduced, and the idle time of the heating device during cooling can be greatly shortened when laboratory equipment is shared.
[0031] In order to prevent the alumina ceramic balls 5 from being blocked, the diameter of the alumina ceramic balls 5 is much smaller than the distance between the spiral plates 3 and the conical feed port 1b and the conical discharge port 1c.
[0032] In the present application, installing electromagnetic valves on the conical feed port 1b and the conical discharge port 1c can reduce heat loss of the heating cylinder 1 during heating.
[0033] In this embodiment, the portion of the ceramic terminal 21 passing through the barrel 1 is sealed with graphite, and the portion of the ceramic terminal 1 located outside the barrel 1 is provided with an aluminum foil wrapping layer.
[0034] Furthermore, in order to reduce heat loss in the heating tube 1, a thermal insulation layer such as aluminum silicate fiber, aluminum oxide fiber, etc. can be provided in the heating tube 1, thereby reducing heat loss and improving energy efficiency.
[0035] The sleeve 1 and the spiral plate 3 are both made of Hastelloy C276, thereby greatly reducing heat loss and improving the temperature uniformity when the sleeve 1 heats the sample tube in the core holder.
[0036] See also Figure 1 The protective component 7 includes an air inlet pipe 71 and an exhaust pipe 72. The air inlet pipe 71 and the exhaust pipe 72 are distributed up and down and are fixedly installed on the heating tube 1 and are connected to the annular heating chamber 1a. A circulation A pump 73 is installed on the exhaust pipe 72, and solenoid valves are installed on the pipe walls of the air inlet pipe 71 and the exhaust pipe 72 near the heating tube 1.
[0037] It should be noted that: the air inlet pipe 71 is connected to the nitrogen supply tank, and the exhaust pipe 72 is connected to the nitrogen recovery tank. When the alumina ceramic ball 5 cools the heating tube 1, the solenoid valves on the air inlet pipe 71 and the exhaust pipe 72 and the circulation A pump 73 are opened. Therefore, the nitrogen accompanies the alumina ceramic ball 5 and flows in a spiral along the annular heating chamber 1a. On the one hand, it accelerates the cooling rate of the annular heating tube 1, and on the other hand, it serves the purpose of isolating oxygen, thereby extending the service life of the sleeve 1 and the spiral plate 3.
[0038] In this embodiment, since the circulation pump A 73 is provided, the nitrogen gas discharged from the conical discharge port 1c is relatively small and can be ignored.
[0039] In the present application, installing solenoid valves on the pipe walls of the air inlet pipe 71 and the exhaust pipe 72 close to the heating tube 1 can reduce the heat loss of the heating tube 1 during heating.
[0040] Example 2:
[0041] On the basis of the above embodiment 1, a fluid heat conducting member 8 is added in the embodiment of the present utility model, please refer to Figure 1 The fluid heat conducting member 8 includes a feed pipe 81 and a discharge pipe 82, which are distributed up and down and are fixedly mounted on the heating cylinder 1 and are interconnected with the annular heating chamber 1a, and a circulation B pump 83 is mounted on the discharge pipe 82, and a circulation pipe 84 that is interconnected with the feed pipe 81 is fixedly mounted on the outlet of the circulation B pump 83, and the pipe head of the feed pipe 81 is connected to the guide pipe 85 through a tee pipe, and a control B valve 86 is fixedly mounted on the guide pipe 85, and solenoid valves are mounted on the pipe walls of the feed pipe 81 and the discharge pipe 82 near the heating cylinder 1.
[0042] It should be noted that: if the fluid solution can be implemented through the fluid heat conductor 8 when heating the sample, the material guide pipe 85 is connected to the fluid medium tank, and the circulation B pump 83 and the corresponding valve are opened, so that the fluid can flow along the spiral plate 3 in the annular heating chamber 1a, avoiding the hidden danger of local overheating and carbonization caused by direct contact of the core with the high-temperature metal wall.
[0043] In the present application, installing solenoid valves on the tube walls of the feed tube 81 and the discharge tube 82 close to the heating tube 1 can reduce the heat loss of the heating tube 1 during heating.
[0044] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.
[0045] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A heating device for simulating oil reservoir formation temperature, characterized in that: It comprises a heating tube (1), wherein an annular heating chamber (1a) is provided in the heating tube (1), and three annular heating plates (2) equidistantly distributed vertically are fixedly embedded in the outer wall of the annular heating chamber (1a); A spiral plate (3) is installed in the annular heating chamber (1a), and the inner plate wall of the spiral plate (3) is fixedly connected to the inner ring wall of the annular heating chamber (1a); A storage tank (4) is fixedly mounted on the heating cylinder (1), and alumina ceramic balls (5) are stored in the storage tank (4); The heating device for simulating reservoir formation temperature further comprises a protective component (7), the protective component (7) comprising an air inlet pipe (71) and an exhaust pipe (72), the air inlet pipe (71) and the exhaust pipe (72) being distributed vertically and fixedly mounted on the heating cylinder (1) and communicating with the annular heating chamber (1a), and a circulating A pump (73) being mounted on the exhaust pipe (72).
2. The heating device for simulating reservoir formation temperature according to claim 1, characterized in that: Each of the annular heating plates (2) is mounted with a ceramic terminal post (21).
3. The heating device for simulating reservoir formation temperature according to claim 1, characterized in that: The discharge port of the storage tank (4) is communicated with the conical feed port (1b) opened at the top of the heating cylinder (1), and the conical feed port (1b) is communicated with the annular heating chamber (1a). A control A valve (6) is installed on the discharge port of the storage tank (4), and a conical discharge port (1c) is opened at the bottom of the heating cylinder (1), and electromagnetic valves are installed on both the conical feed port (1b) and the conical discharge port (1c).
4. The heating device for simulating reservoir formation temperature according to claim 1, characterized in that: Solenoid valves are installed on the pipe walls of the air inlet pipe (71) and the exhaust pipe (72) close to the heating cylinder (1).
5. The heating device for simulating reservoir formation temperature according to claim 1, characterized in that: The heating device for simulating reservoir formation temperature also includes a fluid heat conducting member (8), and the fluid heat conducting member (8) includes a feed pipe (81) and a discharge pipe (82). The feed pipe (81) and the discharge pipe (82) are distributed up and down and are both fixedly mounted on the heating cylinder (1) and are in communication with the annular heating chamber (1a). A circulation B pump (83) is mounted on the discharge pipe (82). A circulation pipe (84) in communication with the feed pipe (81) is fixedly mounted at the discharge port of the circulation B pump (83). The pipe head of the feed pipe (81) is connected to a guide pipe (85) via a three-way pipe, and a control B valve (86) is fixedly mounted on the guide pipe (85).
6. The heating device for simulating reservoir formation temperature according to claim 5, characterized in that: Solenoid valves are installed on the pipe walls of the feed pipe (81) and the discharge pipe (82) close to the heating cylinder (1).