Sampling device and method for detecting oil content of oil sand ore based on hyperspectrum

Abstract

The invention discloses a sampling device and method for detecting the oil content of oil sand ore based on hyperspectrum, and relates to the technical field of oil sand ore sampling. Comprising a mounting base, a drilling barrel and a drill bit, the mounting base, the drilling barrel and the drill bit are sequentially in threaded connection in the direction from top to bottom, the mounting base is rotationally connected with a connecting piece located in the drilling barrel, and the lower side of the connecting piece is in threaded connection with a middle barrel; a guide assembly for reducing the moving resistance of the oil sand sample is arranged on the connecting piece; the guide assembly comprises two inner half cylinders which are symmetrically distributed and a sample containing cylinder. An oil sand sample entering the space between the two inner half cylinders is gradually wrapped by the sample containing cylinder, and the oil sand sample is isolated from the inner half cylinders, so that the oil sand sample does not make direct contact with the inner half cylinders, friction resistance borne by the oil sand sample in the process of moving into the inner half cylinders is reduced, interference to the porosity of the oil sand sample and the rock structure is reduced, and the oil sand sample detection accuracy is improved. And the detection error of the oil content is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of oil sand ore sampling, and particularly to a sampling device and method for detecting the oil content rate of oil sand ore based on hyperspectral detection. Background Art

[0002] As an unconventional petroleum resource, oil sand ore is a composite sedimentary body composed of asphalt, quartz sand, clay minerals and pore water, mainly occurring in sandstone or conglomerate. This mineral deposit has the characteristics of shallow burial, loose rock and relatively low mining cost. The core index for resource evaluation is the oil content rate (usually determined by core spectral analysis method). The current sampling techniques mainly include three methods: mechanical drilling sampling, core drilling sampling and surface manual sampling. Among them, mechanical drilling sampling generally uses a triple-tube sampler designed specifically for loose strata.

[0003] The advantage of the triple-tube sampler lies in its "dynamic-static separation" design: the outer tube (rotating tube) is connected to the diamond bit through threads to implement drilling guidance. The cutting ring at the bottom of the middle tube (static pressure tube) vertically cuts into the formation under hydraulic drive, and the inner tube (sample storage tube) synchronously receives the cut samples. Due to the "characteristic" of the rotation of the outer tube and the stillness of the middle and inner tubes, the disturbance of the drilling vibration to the original structure of the sample is effectively reduced, so the sampling accuracy is high. However, affected by the high-viscosity and plastic characteristics of the crude oil contained in the oil sand ore, during the process of transporting the oil sand sample from the cutting ring to the sample storage tube, due to the too high solid-wall friction coefficient, the transportation resistance increases sharply. During this process, the circumference of the oil sand sample is compressed due to friction, resulting in a change in its original porosity. At the same time, the distribution of circumferential shear stress and axial compressive stress is unbalanced, destroying its rock structure, and then destroying the original state of the oil sand ore, ultimately leading to an increase in the error of the oil content rate detection result. Summary of the Invention

[0004] The present invention provides a sampling device and method for detecting the oil content rate of oil sand ore based on hyperspectral detection, so as to overcome the disadvantages that when using a triple-tube sampler to sample oil sand ore, it will affect the porosity and rock structure of the oil sand sample, and then destroy the original state of the oil sand ore, resulting in an increase in the error of the oil content rate detection result.

[0005] The technical solution is as follows: A sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection, comprising: a mounting base, a drill barrel and a drill bit. The mounting base, the drill barrel and the drill bit are sequentially thread-connected in the top-down direction. A connecting member located inside the drill barrel is rotatably connected to the mounting base. A middle barrel is thread-connected to the lower side of the connecting member. A reducing head is thread-connected to the lower side of the middle barrel. A cutting ring is provided at the lower part of the reducing head, and the cutting ring at the lower part of the reducing head extends out of the drill bit. A guiding assembly for reducing the movement resistance of the oil sand sample is provided on the connecting member; The guiding assembly includes: two inner half cylinders and a sample cylinder that are symmetrically distributed. Both of the two inner half cylinders are located inside the middle cylinder and are commonly threadedly connected to the connecting piece. The two inner half cylinders are in contact with each other and form a cylinder, and the inner diameter of the formed cylinder is equal to the minimum inner diameter of the variable diameter head. The sample cylinder is made of a flexible material. The sample cylinder is sleeved outside the two inner half cylinders, and the sample cylinder blocks the lower openings of the two inner half cylinders.

[0006] Furthermore, semi-convex ribs are provided at the joints of the two inner half cylinders. Adjacent two semi-convex ribs are in contact with each other. The semi-convex ribs are in contact with the lower side of the connecting piece. A slow inclined surface is provided at the lower part of the semi-convex rib. The height of the slow inclined surface gradually decreases in the direction from inside to outside. Two symmetrically distributed limiting ribs are provided on the inner side of the variable diameter head. The limiting ribs coincide with the projections on the horizontal plane of two adjacent and mutually contacting semi-convex ribs.

[0007] Furthermore, a guiding groove connected to the core cutter is provided at the limiting rib of the variable diameter head. The guiding groove is used to drain the oil sand outwards.

[0008] Furthermore, the inner perimeter of the projections of the two inner half cylinders and the semi-convex ribs on them on the horizontal plane is equal to the outer diameter of the sample cylinder.

[0009] Furthermore, a guiding ring is fixedly connected to the variable diameter head. The guiding ring is made of an elastic material, and the inner diameter of the guiding ring is equal to the inner diameter of the inner half cylinder, and is used to guide the oil sand sample between the two inner half cylinders.

[0010] Furthermore, an elastic ring is fixedly connected to the opening of the sample cylinder. Both of the two inner half cylinders are in contact with the elastic ring. The diameter of the elastic ring in the free state is smaller than the inner diameter of the inner half cylinder.

[0011] Furthermore, a connecting column is fixedly connected to the lower side of the mounting seat. A fan wheel is fixedly connected to the connecting column. A transmission cavity for accommodating the fan wheel is provided inside the connecting piece. The connecting piece, the two inner half cylinders and the sample cylinder together form a sample storage cavity. The transmission cavity is communicated with the sample storage cavity. The connecting piece is provided with a plurality of main through holes communicated with the transmission cavity. The inner half cylinder is provided with an equal number of secondary through holes as the main through holes. The secondary through holes are communicated with the adjacent main through holes. The middle cylinder is in contact with the elastic ring. The connecting piece, the middle cylinder, the two inner half cylinders and the elastic ring together form an air storage ring cavity. The transmission cavity is communicated with the air storage ring cavity through the main through holes and the secondary through holes.

[0012] Furthermore, a sliding member is slidably connected to the two inner half cylinders. The sliding member is splined to a transmission member, and a spring is fixedly connected between the transmission member and the sliding member. The connecting column is provided with a threaded portion for threaded connection with the transmission member.

[0013] Furthermore, the sliding member is fixedly connected with a rubber ring, which is used to reduce the impact force when the sliding member collides with the connecting member.

[0014] A method for detecting the oil content rate of oil sand ore based on hyperspectral detection, based on the above-mentioned sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection, the specific steps are as follows: Step 1: Collect relevant information and data of the oil sand ore and analyze it to determine the area where hyperspectral detection is required; Step 2: Drill and take cores to extract oil sand samples; Step 3: Use a hyperspectral instrument to emit and receive full-band hyperspectral signals towards the taken oil sand samples; Step 4: Denoise the received hyperspectral signals to remove interference spectra; Step 5: Extract useful information from the processed hyperspectral signals; Step 6: Combine basic data such as geology and logging to further process and analyze the hyperspectral data; Step 7: Establish a mathematical model for iterative fitting; Step 8: According to the results of the mathematical model, output the detection results of the oil content rate of the oil sand ore.

[0015] The beneficial effects produced by adopting the above technical solutions are as follows: The present invention uses the sample holding cylinder to gradually wrap the oil sand samples entering between the two inner half cylinders, and isolates the oil sand samples from the inner half cylinders, so that the oil sand samples do not directly contact the inner half cylinders, thereby reducing the frictional resistance suffered by the oil sand samples during the movement into the inner half cylinders. On the one hand, it reduces the interference to the porosity and rock structure of the oil sand samples and reduces the detection error of the oil content rate. On the other hand, it is convenient to take out the oil sand samples completely.

[0016] Using the semi-convex ribs to make the sample holding cylinder have two symmetrically distributed depressions. On the one hand, it eliminates the wrinkles of the sample holding cylinder and reduces the influence of the wrinkles of the sample holding cylinder on the rock structure of the oil sand samples. On the other hand, it is convenient to divide the oil sand samples into two halves by using the depressions of the sample holding cylinder, and then it is convenient for the steps of retaining samples and detection after the oil sand samples are taken out.

[0017] After sampling is completed, power is transmitted through the threaded connection between the connecting column and the sliding member, causing the sliding member to drive the inner half cylinder, the middle cylinder, and the variable-diameter head to rotate. In cooperation with the limiting edge, the oil sand sample located inside the variable-diameter head is "twisted off" from the root, facilitating the complete extraction of the oil sand sample. At the same time, the connection between the connecting column and the sliding member provides a stable traction force for the sample holding cylinder and the oil sand sample therein, preventing the sample holding cylinder from slipping out of the inner half cylinder. Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the mounting seat and the connecting member of the present invention; Figure 3 is a three-dimensional structural sectional view of the middle cylinder and the variable-diameter head of the present invention; Figure 4 is a three-dimensional structural sectional view of the variable-diameter head and the inner half cylinder of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the sample holding cylinder and the elastic ring of the present invention; Figure 6 is an exploded view of the drill cylinder, the middle cylinder, and the inner half cylinder of the present invention; Figure 7 is an exploded view of the connecting member and the inner half cylinder of the present invention; Figure 8 is a three-dimensional structural sectional view of the variable-diameter head and the guiding ring of the present invention; Figure 9 is a three-dimensional structural schematic diagram of the sliding member and the rubber ring of the present invention.

[0019] Reference numerals in the drawings: 1 - mounting seat, 2 - drill cylinder, 3 - drill bit, 4 - connecting member, 5 - middle cylinder, 6 - variable-diameter head, 601 - limiting edge, 602 - guiding groove, 7 - inner half cylinder, 8 - sample holding cylinder, 9 - semi-convex edge, 901 - gentle slope, 10 - guiding ring, 11 - elastic ring, 12 - connecting column, 121 - transmission cavity, 122 - sample storage cavity, 13 - fan wheel, 131 - main through hole, 132 - secondary through hole, 133 - air storage ring cavity, 14 - sliding member, 141 - transmission member, 142 - threaded portion, 15 - rubber ring. Detailed Description of the Invention

[0020] The following will combine the attached Figure 1 to the attached Figure 9 to describe the present invention in detail. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] Example 1: This example discloses a sampling device for detecting the oil content rate of oil sand ore based on hyperspectral technology, which is used to reduce the impact of the sampling device on the porosity and rock structure of the oil sand sample, so that the received hyperspectral can fully reflect the original characteristics of the oil sand ore.

[0022] See Figures 1-7 , a sampling device for detecting the oil content rate of oil sand ore based on hyperspectral technology, comprising: a mounting base 1, a drill barrel 2 is threadedly connected to the middle of the mounting base 1, a drill bit 3 is threadedly connected to the lower side of the drill barrel 2, a connecting member 4 located inside the drill barrel 2 is rotatably connected to the lower part of the mounting base 1, a middle barrel 5 is threadedly connected to the lower side of the connecting member 4, a reducing head 6 is threadedly connected to the lower side of the middle barrel 5, a core cutter is provided at the lower part of the reducing head 6, in the downward direction, the outer diameter corresponding to the core cutter of the reducing head 6 gradually decreases, and the oil sand layer is cut by the core cutter of the reducing head 6, and the excess oil sand is extruded outward to reduce the impact on the density of the oil sand sample; the core cutter at the lower part of the reducing head 6 extends out of the drill bit 3 to reduce the disturbance of the drilling action of the drill bit 3 on the formation at the lower opening of the reducing head 6, and at the same time, the reducing head 6 and the middle barrel 5 are prevented from rotating with the drill barrel 2 by the contact between the lower part of the reducing head 6 and the formation; a flow channel for the coolant to flow is provided inside the mounting base 1, so that the coolant flows downward between the drill barrel 2 and the middle barrel 5 and finally flows out between the drill bit 3 and the reducing head 6 to cool the drill bit 3; a guiding component for reducing the movement resistance of the oil sand sample is provided on the connecting member 4.

[0023] See Figures 3-6 , the guiding component includes: two inner half cylinders 7 and a sample holding cylinder 8 symmetrically distributed in the front and back, the two inner half cylinders 7 are fitted together to form a cylinder and can be connected by means of a buckle or the like (the connection method of the two inner half cylinders 7 is not described and shown additionally); both inner half cylinders 7 are located inside the middle barrel 5, and there is a gap between the inner half cylinders 7 and the middle barrel 5, and there is also a gap between the lower parts of the two inner half cylinders 7 and the reducing head 6, the upper parts of the two inner half cylinders 7 are commonly threadedly connected to the connecting member 4, the inner diameter of the cylinder formed by the two inner half cylinders 7 is equal to the minimum inner diameter of the reducing head 6, the cylinder formed by the two inner half cylinders 7 is used to store the oil sand sample, the sample holding cylinder 8 is made of flexible and low-elastic polyvinyl chloride material (the thickness of the sample holding cylinder 8 in the figure is only for illustration, and the impact of the thickness of the sample holding cylinder 8 on the porosity of the oil sand sample can be ignored in actual use), the friction coefficient between the sample holding cylinder 8 and the inner half cylinders 7 is less than the friction coefficient between the oil sand sample and the inner half cylinders 7, the sample holding cylinder 8 is sleeved outside the two inner half cylinders 7, and the sample holding cylinder 8 covers the lower openings of the two inner half cylinders 7.

[0024] The above arrangement can be achieved by using the sample holding tube 8 to gradually wrap the oil sand sample entering between the two inner half-cylinders 7, and isolate the oil sand sample from the inner half-cylinder 7, so that the oil sand sample does not directly contact the inner half-cylinder 7, thereby reducing the friction resistance encountered by the oil sand sample during its movement into the inner half-cylinder 7. On the one hand, it reduces the interference with the porosity and rock structure of the oil sand sample and reduces the detection error of the oil content. On the other hand, it is convenient to take out the oil sand sample completely.

[0025] When sampling oil sands to detect its oil content, the area to be sampled is first determined, and the worker connects the mounting base 1 to the drilling rig. The drilling rig moves the device to the depth to be sampled and drives the mounting base 1 to rotate clockwise (in this article, Figure 1 The perspective of the top view is used as an example for explanation), and then the drilling speed is set. The reducer 6 first contacts the position to be sampled and moves downward under the control of the drilling rig. The ring cutter on the reducer 6 cuts the oil sand at the position to be sampled, and then the drill bit 3 contacts the position to be sampled, and the drill bit 3 is used for drilling guidance; as the reducer 6 moves downward, the oil sand sample cut by the reducer 6 contacts the lower side of the sample tube 8, and pushes the middle part of the sample tube 8 into between the two inner half-tubes 7. At this time, the opening of the sample tube 8 gradually moves downward in the gap formed by the middle tube 5 and the inner half-tube 7, so that the oil sand sample is isolated from the inner half-tube 7 by relying on the sample tube 8, reducing the friction resistance of the oil sand sample when moving between the two inner half-tubes 7, until the reducer 6 moves down by a height of the sample tube 8 in the oil sand layer, and the sample tube 8 is completely turned over, that is, the sample tube 8 completely loses contact with the outer side of the inner half-tube 7, and at this time, the mounting seat 1 is controlled by the drilling rig to move upward while rotating.

[0026] After moving the device to the ground, the worker disconnects the mounting base 1 from the drilling rig, then removes the drill tube 2 from the mounting base 1, and removes the middle tube 5 and the two inner half-cylinders 7 from the connecting piece 4 in turn. During this process, the sample tube 8 and the oil sand sample therein move together with the cylinder composed of the two inner half-cylinders 7. The worker separates the two inner half-cylinders 7 and takes the sample tube 8 out of the inner half-cylinder 7. Then, the sample tube 8 is divided into two halves along its central axis using a tool, one half of which is wax-sealed to retain the sample, and the other half is subjected to high-spectrum detection of its oil content.

[0027] After taking the sample tube 8 out of the inner half-cylinder 7, the worker reassembles the two inner half-cylinders 7 into a cylinder, and sets a new sample tube 8 on the outside thereof. Then, the worker installs the inner half-cylinder 7 and the middle cylinder 5 to the corresponding positions of the connecting piece 4 in turn, and installs the drill tube 2 to the corresponding position of the mounting seat 1, waiting for the next sampling operation.

[0028] Example 2: This example discloses a sampling device for detecting the oil content of oil sands based on hyperspectral detection, which is further optimized on the basis of Example 1.

[0029] See alsoFigures 4-7 At the seams on the inner sides of the two inner half cylinders 7, semi-convex ridges 9 are provided. Adjacent semi-convex ridges 9 are in contact with each other. The upper side of the semi-convex ridge 9 is in contact with the lower side of the connecting member 4. A slow inclined surface 901 is provided at the lower part of the semi-convex ridge 9. The height of the slow inclined surface 901 gradually decreases in the direction from the inside to the outside. On the inner side of the variable diameter head 6, two symmetrically distributed limiting ridges 601 are provided. The limiting ridges 601 and two adjacent and mutually contacting semi-convex ridges 9 are on the same vertical line. The projections of the limiting ridges 601 and the two mutually contacting semi-convex ridges 9 on the horizontal plane coincide; the inner perimeter of the projections of the two inner half cylinders 7 and the semi-convex ridges 9 thereon on the horizontal plane is equal to the outer diameter of the sample cylinder 8 after it is expanded.

[0030] The above settings can achieve that during the process of the oil sand sample squeezing the sample cylinder 8 into the space between the two inner half cylinders 7, the slow inclined surface 901 is used to gradually guide the deformation of the sample cylinder 8, reducing the probability of damage or breakage of the sample cylinder 8 affected by sharp parts; the four semi-convex ridges 9 are used to cause two symmetrically distributed depressions to appear on the sample cylinder 8. On the one hand, the wrinkles of the sample cylinder 8 are eliminated, reducing the influence of the wrinkles of the sample cylinder 8 on the rock structure of the oil sand sample. On the other hand, the depression of the sample cylinder 8 is used to facilitate dividing the oil sand sample into two halves, and further facilitating the steps of retaining samples and detection after the oil sand sample is taken out; the limiting ridges 601 cause the oil sand sample entering the variable diameter head 6 to have symmetrically distributed depressions, avoiding the change of porosity of the oil sand sample due to extrusion at the semi-convex ridges 9. At the same time, the limiting ridges 601 can increase the resistance to circumferential rotation of the variable diameter head 6, enhancing the stability of the variable diameter head 6.

[0031] See Figure 3 、 Figure 4 and Figure 6 As shown in

[0032] The above settings can achieve that the guiding groove 602 is used to reduce the thickness of the lower edge of the limiting ridge 601. During the process of the variable diameter head 6 moving into the oil sand layer, the variable diameter head 6 cuts the oil sand layer by relying on the lower edge of the limiting ridge 601 and the core cutter thereon. At the same time, the guiding groove 602 extrudes the redundant oil sand after cutting to the outside.

[0033] Embodiment 3: This embodiment discloses a sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection. On the basis of Embodiment 1, it is convenient for the oil sand sample to enter the inner half cylinder 7.

[0034] See Figure 6 and Figure 8 As shown in

[0035] The above settings can achieve guiding the oil sand sample cut by the variable diameter head 6 towards the space between the two inner half cylinders 7 by means of the guiding ring 10.

[0036] Embodiment 4: This embodiment discloses a sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection. On the basis of Embodiment 3, the wrapping property of the sample cylinder 8 for the oil sand sample is enhanced.

[0037] See Figures 3-6 , an elastic ring 11 is fixedly connected to the opening of the sample cylinder 8. Both inner half cylinders 7 are in contact with the elastic ring 11. The diameter of the elastic ring 11 in the free state is half of the outer diameter corresponding to the sample cylinder 8 after it is expanded.

[0038] The above settings can achieve that after the oil sand sample fills the sample cylinder 8, relying on the elasticity of the elastic ring 11 to close the opening of the sample cylinder 8, reducing the probability of the oil sand falling out of the sample cylinder 8, which is beneficial to the complete extraction of the oil sand sample; when the elastic ring 11 closes, the elastic ring 11 contacts the upper part of the guiding ring 10 and squeezes the upper part of the guiding ring 10 to contract and deform inward.

[0039] Embodiment 5: This embodiment discloses a sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection. On the basis of Embodiment 4, the frictional resistance when the sample cylinder 8 moves within the inner half cylinder 7 is reduced.

[0040] See Figures 3-7 , a connecting column 12 is fixedly connected to the lower side of the mounting base 1. The connecting column 12 is fixedly connected with a fan wheel 13. During the rotation of the fan wheel 13, the air flow at its lower part is conveyed upward. A transmission cavity 121 is arranged inside the connecting member 4. The fan wheel 13 is located in the transmission cavity 121. The lower side of the connecting member 4, the two inner half cylinders 7 and the sample cylinder 8 together form a sample storage cavity 122. The middle part of the lower side of the transmission cavity 121 is communicated with the sample storage cavity 122. The connecting member 4 is provided with a plurality of main through holes 131 distributed circumferentially at equal intervals and communicated with the transmission cavity 121. The inner half cylinder 7 is provided with auxiliary through holes 132 equal in number to the main through holes 131. All the auxiliary through holes 132 are respectively communicated with the adjacent main through holes 131. The inner side of the middle cylinder 5 is in contact with the elastic ring 11. The connecting member 4, the middle cylinder 5, the two inner half cylinders 7 and the elastic ring 11 together form an air storage ring cavity 133. The transmission cavity 121 is communicated with the air storage ring cavity 133 through the main through holes 131 and the auxiliary through holes 132. The volume of the sample storage cavity 122 is larger than the volume of the air storage ring cavity 133.

[0041] The above settings can achieve the following: relying on the rotation of the fan wheel 13, the gas in the sample storage cavity 122 is transported into the gas storage ring cavity 133. The air pressure in the sample storage cavity 122 decreases, reducing the resistance when the sample cylinder 8 moves deeper into the two inner half cylinders 7, and promoting the oil sand sample wrapped by the sample cylinder 8 to move deeper into the two inner half cylinders 7. As the fan wheel 13 rotates, the air pressure in the gas storage ring cavity 133 increases, exerting a downward thrust on the elastic ring 11, reducing the pulling force required for the sample cylinder 8 to pull the elastic ring 11 to move, and reducing the axial extrusion force exerted by the sample cylinder 8 on the oil sand sample, thereby reducing the impact on the porosity of the oil sand sample. Rely on the gas storage ring cavity 133 to temporarily store the gas in the sample storage cavity 122. After the sampling is completed, the elastic ring 11 disengages from between the middle cylinder 5 and the inner half cylinder 7, allowing the gas in the gas storage ring cavity 133 to flow out into the sampling hole (the sampling hole refers to the hole formed after drilling sampling), reducing the negative pressure effect on the device when it is removed from the sampling hole, and facilitating the removal of the device from the sampling hole.

[0042] During the sampling process, the drilling rig drives the mounting base 1, the drill barrel 2, and the drill bit 3 to rotate. The mounting base 1 drives the fan wheel 13 to rotate clockwise through the connecting column 12. The rotation of the fan wheel 13 has the function of extracting the gas in the sample storage cavity 122 and transporting it into the gas storage ring cavity 133, reducing the air pressure in the sample storage cavity 122 and increasing the air pressure in the gas storage ring cavity 133.

[0043] Embodiment 6: This embodiment discloses a sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection. On the basis of Embodiment 5, it is convenient to completely take out the oil sand sample.

[0044] See Figure 4 、 Figure 6 and Figure 9 As shown in

[0045] The above settings can achieve that when the oil sand sample fills the sample cylinder 8, the power is transmitted through the threaded connection between the connecting column 12 and the transmission part 141, so that the transmission part 141 drives the sliding part 14, the inner half cylinder 7, the connecting part 4, the middle cylinder 5 and the variable diameter head 6 to rotate, and cooperates with the limiting edge 601 to "twist off" the oil sand sample located in the variable diameter head 6 from the root, which is convenient for taking out the oil sand sample completely. At the same time, the connection between the connecting column 12 and the sliding part 14 provides a stable traction force for the sample cylinder 8 and the oil sand sample therein, avoiding the situation that the sample cylinder 8 slips out of the inner half cylinder 7.

[0046] During the process of sampling the oil sand, as the inner half cylinder 7 moves downward, the oil sand sample squeezes the middle part of the sample cylinder 8 and the sliding part 14, so that the heights of the middle part of the sample cylinder 8 and the sliding part 14 are kept stable (that is, moving upward relative to the inner half cylinder 7). At the same time, the middle part of the sample cylinder 8 has a tendency to move upward under the action of the negative pressure in the sample storage cavity 122, reducing the force required for the sample cylinder 8 to move within the inner half cylinder 7. When the elastic ring 11 loses contact with the outer side surface of the inner half cylinder 7 (the drilling rig controls the device to stop moving downward but keeps the mounting seat 1 rotating), the transmission part 141 contacts the connecting column 12, and the connecting column 12 squeezes the transmission part 141 to move downward and compresses the spring of the transmission part 141. As the connecting column 12 rotates and the mounting seat 1 moves downward, when the opening of the threaded part 142 corresponds to the beginning of the internal thread of the transmission part 141, the transmission part 141 and the connecting column 12 achieve threaded connection. At the same time, the transmission part 141 quickly resets relative to the sliding part 14 under the drive of the connecting column 12, and the spring of the transmission part 141 restores.

[0047] During the process of the threaded connection between the sliding part 14 and the connecting column 12, the distance between the rubber ring 15 and the connecting part 4 gradually decreases until they finally contact and compress the rubber ring 15. Relying on the rubber ring 15 to provide buffering for the contact between the connecting part 4 and the sliding part 14, and at the same time extending the time for the connecting column 12 to drive the transmission part 141 and the sliding part 14 to accelerate. Subsequently, the sliding part 14 drives the inner half cylinder 7 to rotate through the groove and semi-convex edge 9 thereon, the inner half cylinder 7 drives the connecting part 4, the middle cylinder 5 and the variable diameter head 6 to rotate, and the variable diameter head 6 drives the oil sand sample therein to rotate through the limiting edge 601 thereon, "twisting off" the oil sand sample from its root. Subsequently, the drilling rig is controlled to take out the device together with the oil sand sample.

[0048] After removing this device, the worker disassembles the drill cylinder 2 from the mounting base 1 and disassembles the middle cylinder 5 from the connecting piece 4. Subsequently, the worker rotates the mounting base 1 counterclockwise, gradually reducing the contact area between the connecting column 12 and the transmission part 141. During this process, the worker pulls the sample cylinder 8 outward relative to the inner half cylinders 7, causing the sample cylinder 8 to drive the oil sand sample and the sliding part 14 inside it to move downward together. Eventually, both the sample cylinder 8 and the sliding part 14 slide out of the two inner half cylinders 7. At this time, the worker releases the clamping connection between the sample cylinder 8 and the sliding part 14, and processes and detects the sample cylinder 8 and the oil sand sample inside it. Subsequently, the worker clamps the new sample cylinder 8 to the sliding part 14, inserts the sliding part 14 into the lower opening of the cylinder formed by the two inner half cylinders 7, reinserts the new sample cylinder 8 outside the two inner half cylinders 7, and stretches and stores energy of the elastic ring 11 on the new sample cylinder 8 and then slews it outside the two inner half cylinders 7. Subsequently, the middle cylinder 5 is installed at the corresponding position of the connecting piece 4 in sequence, and the drill cylinder 2 is installed at the corresponding position of the mounting base 1, waiting for the next sampling.

[0049] Embodiment 7: This embodiment discloses a method for detecting the oil content rate of oil sand ore based on hyperspectral detection.

[0050] See Figures 1-9 , the method for detecting the oil content rate of oil sand ore based on hyperspectral detection, based on the above-mentioned sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection, includes the following steps: Step 1: Collect relevant information and data of the oil sand ore and analyze it to determine the area where hyperspectral detection is required; Step 2: Drill and take cores to extract oil sand samples; Step 3: Use a hyperspectral instrument to emit and receive full-band hyperspectral signals towards the taken oil sand samples; Step 4: Perform denoising processing on the received hyperspectral signals to remove interference spectra; Step 5: Extract useful information from the processed hyperspectral signals; Step 6: Combine basic data such as geology and logging to further process and analyze the hyperspectral data; Step 7: Establish a mathematical model for iterative fitting; Step 8: According to the results of the mathematical model, output the detection results of the oil content rate of the oil sand ore.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A sampling device for detecting the oil content of oil sands based on hyperspectral, comprising: A mounting seat (1), a drill barrel (2) and a drill bit (3), wherein the mounting seat (1), the drill barrel (2) and the drill bit (3) are threadedly connected in sequence from top to bottom, the mounting seat (1) is rotatably connected to a connecting piece (4) located in the drill barrel (2), the lower side of the connecting piece (4) is threadedly connected to a middle barrel (5), the lower side of the middle barrel (5) is threadedly connected to a reducing head (6), the lower part of the reducing head (6) is provided with a ring cutter, and the ring cutter at the lower part of the reducing head (6) protrudes out of the drill bit (3), wherein the connecting piece (4) is provided with a guide component for reducing the movement resistance of the oil sand sample; The guide assembly comprises: two symmetrically distributed inner half-cylinders (7) and a sample holding cylinder (8); the two inner half-cylinders (7) are both located in the middle cylinder (5) and are threadedly connected to the connecting piece (4); the two inner half-cylinders (7) are attached to each other to form a cylinder, and the inner diameter of the formed cylinder is equal to the minimum inner diameter of the reducer (6); the sample holding cylinder (8) is made of a flexible material, and the sample holding cylinder (8) is sleeved on the outer sides of the two inner half-cylinders (7), and the sample holding cylinder (8) covers the lower openings of the two inner half-cylinders (7).

2. A sampling device for detecting oil content of oil sands based on hyperspectral according to claim 1, characterized in that: A semi-convex ridge (9) is provided at the joint of the two inner half cylinders (7), two adjacent semi-convex ridges (9) are in contact with each other, the semi-convex ridge (9) is in contact with the lower side of the connecting member (4), a gentle slope (901) is provided at the lower part of the semi-convex ridge (9), the height of the gentle slope (901) gradually decreases from the inside to the outside, and two symmetrically distributed limiting ridges (601) are provided on the inner side of the reducer (6), and the limiting ridges (601) coincide with the projections of the two adjacent and mutually contacting semi-convex ridges (9) on the horizontal plane.

3. A sampling device for detecting oil content of oil sands based on hyperspectral according to claim 2, characterized in that: A guide groove (602) connected to a ring cutter is provided at the limiting edge (601) of the reducer (6), and the guide groove (602) is used to discharge the oil sand outwards.

4. A sampling device for detecting oil content of oil sands based on hyperspectral according to claim 3, characterized in that: The inner perimeter of the two inner half cylinders (7) and the semi-convex ridges (9) thereon projected on a horizontal plane is equal to the outer diameter of the sample holding cylinder (8).

5. A sampling device for detecting oil content of oil sands based on hyperspectral according to claim 4, characterized in that: The reducer (6) is fixedly connected with a guide ring (10), the guide ring (10) is made of elastic material, and the inner diameter of the guide ring (10) is equal to the inner diameter of the inner half cylinder (7), and is used to guide the oil sand sample between the two inner half cylinders (7).

6. A sampling device for detecting oil content of oil sands based on hyperspectral according to claim 5, characterized in that: An elastic ring (11) is fixedly connected to the opening of the sample holding cylinder (8), and the two inner half cylinders (7) are in contact with the elastic ring (11). The diameter of the elastic ring (11) in a free state is smaller than the inner diameter of the inner half cylinder (7).

7. A sampling device for detecting oil content of oil sands based on hyperspectral according to claim 6, characterized in that: A connecting column (12) is fixedly connected to the lower side of the mounting seat (1), and a fan wheel (13) is fixedly connected to the connecting column (12). A transfer cavity (121) for accommodating the fan wheel (13) is provided in the connecting member (4). The connecting member (4), the two inner half cylinders (7) and the sample storage cylinder (8) together form a sample storage cavity (122). The transfer cavity (121) is communicated with the sample storage cavity (122). The connecting member (4) is provided with a plurality of main through holes (131) communicated with the transfer cavity (121). The half cylinder (7) is provided with secondary through holes (132) of the same number as the main through holes (131); the secondary through holes (132) are in communication with adjacent main through holes (131); the middle cylinder (5) is in contact with the elastic ring (11); the connecting piece (4), the middle cylinder (5), the two inner half cylinders (7) and the elastic ring (11) together form an air storage ring cavity (133); and the transfer cavity (121) is in communication with the air storage ring cavity (133) via the main through holes (131) and the secondary through holes (132).

8. A sampling device for detecting oil content of oil sands based on hyperspectral according to claim 7, characterized in that: The two inner half cylinders (7) are slidably connected to a sliding member (14), the sliding member (14) is spline-connected to a transmission member (141), a spring is fixedly connected between the transmission member (141) and the sliding member (14), and the connecting column (12) is provided with a threaded portion (142) for threaded connection with the transmission member (141).

9. A sampling device for detecting oil content of oil sands based on hyperspectral according to claim 8, characterized in that: The sliding member (14) is fixedly connected to a rubber ring (15), and the rubber ring (15) is used to reduce the impact force when the sliding member (14) collides with the connecting member (4).

10. A method for detecting the oil content of oil sands based on hyperspectral, according to a sampling device for detecting the oil content of oil sands based on hyperspectral as claimed in claim 9, characterized in that: The specific steps are as follows: Step 1: Collect relevant information and data of oil sands mines and analyze them to determine the areas that need hyperspectral detection; Step 2: Drilling and coring to extract oil sand samples; Step 3: Use a hyperspectral instrument to transmit and receive full-band hyperspectral signals at the oil sand samples; Step 4: De-noise the received hyperspectral signal to remove the interfering spectrum; Step 5: Extract useful information from the processed hyperspectral signal; Step 6: Combined with basic data such as geology and well logging, further process and analyze hyperspectral data; Step 7: Establish a mathematical model for iterative fitting; Step 8: Based on the calculation results of the mathematical model, output the oil content detection results of the oil sand mine.

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