Three-dimensional visual model of bow-shaped horizontal well with multiple sets of continuous oil layers

Abstract

The utility model relates to a development multiple sets of continuity oil layer arc horizontal well three-dimensional visual model relates to teaching mould technical field, concretely relates to a development multiple sets of continuity oil layer arc horizontal well three-dimensional visual model, including a plurality of arc horizontal simulation well and oil layer group simulation layer, its characterized in that, oil layer group simulation layer is overlapped from top to bottom setting, and oil layer group simulation layer quantity is same with arc horizontal simulation well quantity, is located the top oil layer simulation layer above ground loess layer simulation layer is provided, the ground loess layer simulation layer is provided with simulation derrick on, every oil layer group simulation layer is provided with one arc horizontal simulation well in the passing through setting, the utility model discloses simple structure, easy to make, help to improve the teaching efficiency, solved the problem that the existing teaching mould cannot directly observe the arc well in the stratum passing through, can directly and visually show the arc well in the stratum passing through track and its contact with horizontal seam.

Description

Technical Field

[0001] This utility model relates to the field of teaching mold technology, specifically to a three-dimensional visual model of a horizontal well with multiple continuous oil layers in an arc shape. Background Technology

[0002] Bow-shaped wells are a type of well that falls between highly deviated wells and horizontal wells. Vertically, they can simultaneously encounter multiple oil layers, making them suitable for continuous oil layers with a certain thickness. Especially in shallow oil reservoirs with multiple horizontal fractures, bow-shaped wells can effectively solve problems that conventional horizontal wells cannot, thereby increasing the drainage area of ​​the oil well.

[0003] Therefore, bow-shaped wells have been rapidly adopted for the efficient development of low-permeability horizontally fractured reservoirs. However, current literature shows that the descriptions of the applicable conditions for bow-shaped wells are rather abstract, and the diagrams used to illustrate their three-dimensional development are all two-dimensional. This makes it difficult to understand the function of bow-shaped wells in developing multiple continuous low-permeability horizontally fractured reservoirs, improving reserve utilization, and increasing single-well production. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a three-dimensional visual model of a horizontal arc-shaped well with multiple continuous oil layers. This model can intuitively and vividly demonstrate the trajectory of the arc-shaped well through the formation and its contact with the horizontal fractures. It also allows observation of the longitudinal position of the arc-shaped well section within the formation with multiple discontinuous oil layers.

[0005] This utility model provides a three-dimensional visual model for developing multiple sets of continuous oil layer arc-shaped horizontal wells, including several arc-shaped horizontal simulated wells and oil layer group simulated layers. The oil layer group simulated layers are stacked from top to bottom, and the number of oil layer group simulated layers is the same as the number of arc-shaped horizontal simulated wells. Above the topmost oil layer simulated layer, a surface loess layer simulated layer is set, and a simulated well frame is set on the surface loess layer simulated layer.

[0006] A horizontal arc-shaped simulated well is set up in each simulated oil layer group;

[0007] The oil layer group simulation layer includes three oil layer simulation layers that are stacked sequentially from top to bottom: the upper oil layer simulation layer, the middle oil layer simulation layer, and the lower oil layer simulation layer.

[0008] One end of the bow-shaped horizontal simulated well emerges from the loess layer on the ground and is located at the bottom of the derrick. The other end of the bow-shaped horizontal simulated well extends vertically downward to the simulated layer of the oil layer group, then enters the upper simulated layer of the oil layer group, passes through the middle simulated layer, reaches the lower simulated layer, bends and changes direction, and then enters the upper simulated layer through the middle simulated layer. The part of the bow-shaped horizontal simulated well located in the simulated layer group is bow-shaped.

[0009] Two fracture simulation plates are symmetrically arranged in the upper oil layer simulation layer, the middle oil layer simulation layer and the lower oil layer simulation layer, and the bow-shaped horizontal simulation wells all penetrate the two fracture simulation plates in the oil layer simulation layer they pass through.

[0010] Two simulated fracture sections in the same oil layer are located at the same height.

[0011] Preferably, in adjacent oil layer simulation layers, the distance between two fracture simulation pieces in the upper oil layer simulation layer is greater than the distance between two fracture simulation pieces in the lower oil layer simulation layer.

[0012] Preferably, the bow-shaped horizontal simulated wells are arranged along the Y-axis in the simulated loess layer on the surface, and the bow-shaped horizontal simulated wells are arranged to traverse along the X-axis in each simulated oil layer group.

[0013] Preferably, three bow-shaped horizontal simulated wells are set.

[0014] Preferably, it also includes a transparent box, and the simulated oil layer group is filled and disposed in the transparent box.

[0015] Preferably, a separator made of colorless and transparent gel is filled between adjacent simulated oil layer groups.

[0016] Preferably, the upper oil layer simulation layer, the middle oil layer simulation layer, and the lower oil layer simulation layer are all made of colored transparent gel.

[0017] This utility model has a simple structure and is easy to manufacture, which helps to improve teaching efficiency. It solves the problem that existing teaching models cannot directly observe the movement of bow-shaped wells through the formation. It can intuitively and vividly show the trajectory of the bow-shaped well through the formation and its contact with horizontal fractures. It can observe the longitudinal position of the bow-shaped well section in the formation with multiple sets of poorly continuous oil-bearing layers. It can provide a very good teaching model for technicians who are researching and developing ultra-low permeability reservoirs. It is a three-dimensional visual model that can help technicians formulate bow-shaped well production plans in a high-quality and efficient manner. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention.

[0019] Figure 2 for Figure 1 A top view of the arrangement of the three bow-shaped horizontal simulated wellheads.

[0020] Figure labels: 1-Simulated oil layer group, 2-Arch-shaped horizontal simulated well, 3-Simulated surface loess layer, 4-Simulated derrick, 5-Upper oil layer simulated layer, 6-Middle oil layer simulated layer, 7-Lower oil layer simulated layer, 8-Fractured simulated piece. Detailed Implementation

[0021] The present invention will be described below with reference to the accompanying drawings.

[0022] See Figure 1 This utility model provides a three-dimensional visual model for developing multiple sets of continuous oil layer arc-shaped horizontal wells, including several arc-shaped horizontal simulated wells 2 and oil layer group simulated layers 1. The oil layer group simulated layers 1 are stacked from top to bottom, and the number of oil layer group simulated layers 1 is the same as the number of arc-shaped horizontal simulated wells 2. Above the topmost oil layer simulated layer, a surface loess layer simulated layer 3 is set, and a simulated well frame 4 is set on the surface loess layer simulated layer 3.

[0023] A horizontal arc-shaped simulated well 2 is set up in each simulated layer 1 of the oil layer group;

[0024] The oil layer group simulation layer 1 includes three oil layer simulation layers that are stacked from top to bottom: the upper oil layer simulation layer 5, the middle oil layer simulation layer 6, and the lower oil layer simulation layer 7.

[0025] One end of the bow-shaped horizontal simulated well 2 emerges from the loess layer on the ground and is located at the bottom of the derrick. The other end of the bow-shaped horizontal simulated well 2 extends vertically downward to the simulated layer 1 of the oil layer group, then enters the upper oil layer simulated layer 5 in the simulated layer 1 of the oil layer group, passes through the middle oil layer simulated layer 6, reaches the lower oil layer simulated layer 7, bends and changes direction, and then enters the upper oil layer simulated layer 5 through the middle oil layer simulated layer 6. The part of the bow-shaped horizontal simulated well 2 located in the simulated layer 1 of the oil layer group is bow-shaped.

[0026] Two fracture simulation plates 8 are symmetrically arranged in the upper oil layer simulation layer 5, the middle oil layer simulation layer 6 and the lower oil layer simulation layer 7, and the bow-shaped horizontal simulation well 2 penetrates the two fracture simulation plates 8 in the oil layer simulation layer it passes through.

[0027] Two fracture simulation pieces 8 in the same oil layer simulation layer are located at the same height.

[0028] In one embodiment, in adjacent oil layer simulation layers, the distance between two fracture simulation pieces 8 in the upper oil layer simulation layer is greater than the distance between two fracture simulation pieces 8 in the lower oil layer simulation layer.

[0029] In one embodiment, the bow-shaped horizontal simulated well 2 is arranged along the Y-axis in the surface loess layer simulated layer 3, and the bow-shaped horizontal simulated well 2 is arranged to traverse along the X-axis in each oil layer group simulated layer 1.

[0030] Three bow-shaped horizontal simulated wells 2 are provided. In use, the bow-shaped horizontal simulated wells 2 are made of copper or iron wire with sufficient hardness to ensure that after the present invention is installed, the simulated well frame 4 and the ground loess layer simulated layer 3 supported by the three bow-shaped horizontal simulated wells 2 will not tilt. Other measures can also be taken to ensure the strength of the present invention, such as placing the present invention in a box and fixing it.

[0031] In one embodiment, a transparent box is also included, and the oil layer group simulation layers 1 are all filled and disposed in the transparent box.

[0032] A colorless, transparent gel separator layer is filled between adjacent oil layer groups in simulated layer 1.

[0033] The upper oil layer simulation layer 5, the middle oil layer simulation layer 6, and the lower oil layer simulation layer 7 are all made of colored transparent gel.

[0034] Model making process:

[0035] Step 1: Make a transparent box with a length of 40cm, a width of 20cm, and a height of 46cm using transparent plastic sheets.

[0036] Step 2: Use purple copper wire to make the first bow-shaped horizontal simulated well 2, denoted as bow-shaped well A. The radius of the wellhead of bow-shaped well A is set to 0.5cm, the length of the straight section is 20cm, the length of the bow section is 30cm, and the vertical height is 11cm.

[0037] Step 3: Use blue copper wire to make a second bow-shaped horizontal simulated well 2, denoted as bow-shaped well B. The radius of the wellhead of bow-shaped well B is set to 0.5cm, the length of the straight section is 37cm, the length of the bow section is 30cm, and the vertical height is 11cm.

[0038] Step 4: Use red copper wire to make the third bow-shaped horizontal simulated well 2, denoted as bow-shaped well C. The radius of the wellhead of bow-shaped well C is set to 0.5cm, the length of the straight section is 54cm, the length of the steep section is 30cm, and the vertical height is 11cm.

[0039] Step 5: Use a sky blue eraser to cut an oval-shaped disc, with a major axis radius of 4cm, a minor axis radius of 3cm, and a thickness of 0.5cm. Prepare 9 such colored eraser discs. These eraser discs are mold crack simulation discs 8.

[0040] Step 6: Pass the bow-shaped horizontal simulated well 2 through the middle of the fracture simulation piece 8, and insert a piece of rubber at a vertical height of 30cm, 26cm and 22cm from the top of the bow-shaped horizontal simulated well 2, respectively, so that it is distributed in the bow-shaped well section to ensure that the fracture is in the oil layer. This is used to simulate the relationship between the bow-shaped horizontal well and the horizontal fracture, and is located at the position of the corresponding oil layer simulation layer.

[0041] Step 7: Use a tan eraser to make a simulated loess layer 3, 2cm thick, with a 10*10cm cuboid on the top and bottom. Drill a hole A with a radius of 0.5cm and a depth of 1cm, 3cm from the edge on the center line of the bottom of the cuboid. Then drill a second hole B with a radius of 0.5cm and a depth of 1cm, 0.5cm apart. Repeat this process to drill a total of 3 holes, and label them A, B, and C respectively.

[0042] Step 8: Fix the top of the bow-shaped well C into the hole corresponding to the name of the loess layer. The direction of the bow-shaped well section is east-west.

[0043] Step 9: Measure 12cm from the bottom of the transparent plastic box upwards as the first oil layer simulation layer 1. Divide the first oil layer simulation layer 1 into 3 layers: upper oil layer simulation layer 5, middle oil layer simulation layer 6, and lower oil layer simulation layer 7. Pour different colored transparent gels from bottom to top. Fill the lower layer with 4cm thick pink transparent gel to form the lower oil layer simulation layer 7. After the lower oil layer simulation layer 7 solidifies, fill it with 4cm thick orange transparent gel to form the middle oil layer simulation layer 6. After the middle oil layer simulation layer 6 solidifies, fill it with 4cm thick pink transparent gel to form the upper oil layer simulation layer 5.

[0044] Step 10: After all the transparent gel in the first oil layer group simulated layer 1 has solidified, inject a 5cm thick layer of colorless transparent gel into the transparent plastic box to form a separator layer.

[0045] Step 11: Fix the bow-shaped well B according to the method in step 8. After the separator layer in step 10 solidifies, form the second oil layer group simulated layer 1 according to the method in step 9, and then repeat step 10.

[0046] Step 12: Fix the bow-shaped well A according to the method in step 8, and form the third oil layer group simulation layer 1 according to the method in step 9.

[0047] Step 13: Use red copper wire to form a well frame shape and fix it at the center point of the top surface of simulated layer 3 of the loess layer on the ground.

Claims

1. A three-dimensional visual model for developing multiple sets of continuous oil-bearing arched horizontal wells, including several simulated arched horizontal wells and simulated oil-bearing formations, characterized in that, The simulated oil layer groups are arranged in an overlapping manner from top to bottom, and the number of simulated oil layer groups is the same as the number of simulated horizontal wells in the bow shape. A simulated surface loess layer is set above the topmost simulated oil layer, and a simulated well frame is set on the simulated surface loess layer. A horizontal simulated well in an arc shape is set up in each simulated oil layer group; The oil layer group simulation layer includes three oil layer simulation layers that are stacked sequentially from top to bottom: the upper oil layer simulation layer, the middle oil layer simulation layer, and the lower oil layer simulation layer. One end of the bow-shaped horizontal simulated well emerges from the loess layer on the ground and is located at the bottom of the derrick. The other end of the bow-shaped horizontal simulated well extends vertically downward to the simulated layer of the oil layer group, then enters the upper simulated layer of the oil layer group, passes through the middle simulated layer, reaches the lower simulated layer, bends and changes direction, and then enters the upper simulated layer through the middle simulated layer. The part of the bow-shaped horizontal simulated well located in the simulated layer group is bow-shaped. Two fracture simulation plates are symmetrically arranged in the upper oil layer simulation layer, the middle oil layer simulation layer and the lower oil layer simulation layer, and the bow-shaped horizontal simulation wells all penetrate the two fracture simulation plates in the oil layer simulation layer they pass through. Two simulated fracture sections in the same oil layer are located at the same height.

2. The three-dimensional visual model for developing multiple sets of continuous oil-bearing arch-shaped horizontal wells as described in claim 1, characterized in that, In adjacent oil layer simulation layers, the distance between two fracture simulation pieces in the upper oil layer simulation layer is greater than the distance between two fracture simulation pieces in the lower oil layer simulation layer.

3. The three-dimensional visual model for developing multiple sets of continuous oil-bearing arch-shaped horizontal wells as described in claim 1, characterized in that, The bow-shaped horizontal simulated wells are arranged along the Y-axis in the simulated loess layer on the ground, and the bow-shaped horizontal simulated wells are set up along the X-axis in each simulated oil layer group.

4. The three-dimensional visual model for developing multiple sets of continuous oil-bearing arch-shaped horizontal wells as described in claim 1, characterized in that, The bow-shaped horizontal simulated wells are set to three.

5. The three-dimensional visual model for developing multiple sets of continuous oil-bearing arch-shaped horizontal wells as described in claim 1, characterized in that, It also includes a transparent box, and the simulated oil layer group is filled and disposed inside the transparent box.

6. The three-dimensional visual model for developing multiple sets of continuous oil-bearing arch-shaped horizontal wells as described in claim 5, characterized in that, A colorless, transparent gel separator was placed between the simulated layers of adjacent oil layers.

7. The three-dimensional visual model for developing multiple sets of continuous oil-bearing arch-shaped horizontal wells as described in claim 1, characterized in that, The upper oil layer simulation layer, the middle oil layer simulation layer, and the lower oil layer simulation layer are all made of colored transparent gel.

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