Sampling Device and Method for Detecting Oil Content Rate of Oil Sands Based on Hyperspectral

Abstract

The present invention discloses a sampling device and method for detecting the oil content rate of oil sand ore based on hyperspectral detection, which relates to the technical field of oil sand ore sampling. It includes: a mounting base, a drilling barrel and a drill bit. The mounting base, the drilling barrel and the drill bit are sequentially threadedly connected in the vertical downward direction. The mounting base is rotatably connected with a connecting piece located inside the drilling barrel. The lower side of the connecting piece is threadedly connected with a middle barrel. A guiding component for reducing the movement resistance of the oil sand sample is arranged on the connecting piece; the guiding component includes: two inner half barrels symmetrically distributed and a sample holding barrel. The present invention uses the sample holding barrel to gradually wrap the oil sand sample entering between the two inner half barrels and isolate the oil sand sample from the inner half barrel, so that the oil sand sample does not directly contact the inner half barrel, thereby reducing the frictional resistance suffered by the oil sand sample during the movement into the inner half barrel, reducing the interference with the porosity and rock structure of the oil sand sample, and reducing the detection error of the oil content rate.

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 with a diamond bit through threads to implement drilling guidance. The ring knife 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 outer tube rotating while the middle and inner tubes are stationary, the disturbance of 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 the oil sand sample migrating to the sample storage tube after being cut by the ring knife, due to the too high solid-wall friction coefficient, the migration resistance increases sharply. During this process, the circumferential side 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 thus 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 the existing triple-tube sampler is used to sample the oil sand ore, it will affect the porosity and rock structure of the oil sand sample, thereby destroying the original state of the oil sand ore and causing 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. The mounting base is rotatably connected with a connecting member located inside the drill barrel. The lower side of the connecting member is thread-connected with a middle barrel. The lower side of the middle barrel is thread-connected with a reducer head. A ring knife is arranged at the lower part of the reducer head, and the ring knife at the lower part of the reducer head extends out of the drill bit. A guiding assembly for reducing the moving resistance of the oil sand sample is arranged on the connecting member;

[0006] The guiding component includes: two inner half cylinders and a sample holding 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 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 reduced-diameter head. The sample holding cylinder is made of a flexible material, and the sample holding cylinder is sleeved outside the two inner half cylinders, and the sample holding cylinder blocks the lower openings of the two inner half cylinders.

[0007] 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 the inside to the outside. Two symmetrically distributed limiting ribs are provided on the inner side of the reduced-diameter head. The limiting ribs coincide with the projections on the horizontal plane of the adjacent two semi-convex ribs that are in contact with each other.

[0008] Furthermore, a guiding groove connected to the core cutter is provided at the limiting rib of the reduced-diameter head. The guiding groove is used to discharge the oil sand outwards.

[0009] Furthermore, the inner perimeter of the projections of the two inner half cylinders and the semi-convex ribs thereon on the horizontal plane is equal to the outer diameter of the sample holding cylinder.

[0010] Furthermore, a guiding ring is fixedly connected to the reduced-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.

[0011] Furthermore, an elastic ring is fixedly connected to the opening of the sample holding 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.

[0012] 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 holding cylinder jointly 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 auxiliary through holes equal in number to the main through holes. The auxiliary 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 jointly form an air storage ring cavity. The transmission cavity is communicated with the air storage ring cavity through the main through holes and the auxiliary through holes.

[0013] Furthermore, the two inner half cylinders are slidably connected to a sliding member, the sliding member is spline-connected to a transmission member, a spring is fixed between the transmission member and the sliding member, and the connecting column is provided with a threaded portion for threaded connection with the transmission member.

[0014] Furthermore, the sliding member is fixedly connected with a rubber ring, and the rubber ring is used to reduce the impact force when the sliding member collides with the connecting member.

[0015] The method for detecting the oil content of oil sands based on hyperspectral is based on the above-mentioned sampling device for detecting the oil content of oil sands based on hyperspectral, and the specific steps are as follows:

[0016] Step 1: Collect relevant information and data of oil sands mines and analyze them to determine the areas that need hyperspectral detection;

[0017] Step 2: Drilling and coring to extract oil sand samples;

[0018] Step 3: Use a hyperspectral instrument to transmit and receive full-band hyperspectral signals at the oil sand samples;

[0019] Step 4: De-noise the received hyperspectral signal to remove the interfering spectrum;

[0020] Step 5: Extract useful information from the processed hyperspectral signal;

[0021] Step 6: Combined with basic data such as geology and well logging, further process and analyze hyperspectral data;

[0022] Step 7: Establish a mathematical model for iterative fitting;

[0023] Step 8: Based on the results of the mathematical model, output the oil content detection results of the oil sands mine.

[0024] The beneficial effect produced by adopting the above technical scheme is that: the present invention utilizes the sample holding cylinder to gradually wrap the oil sand sample entering between the two inner half cylinders, and isolates the oil sand sample from the inner half cylinder, so that the oil sand sample does not directly contact the inner half cylinder, thereby reducing the friction resistance encountered by the oil sand sample during the movement into the inner half cylinder, on the one hand reducing the interference to the porosity and rock structure of the oil sand sample and reducing the detection error of the oil content, and on the other hand facilitating the complete removal of the oil sand sample.

[0025] The semi-convex ridges are used to create two symmetrically distributed depressions in the sample holding tube. On the one hand, the wrinkles of the sample holding tube are eliminated and the influence of the wrinkles of the sample holding tube on the rock structure of the oil sand sample is reduced. On the other hand, the depressions in the sample holding tube are used to divide the oil sand sample into two halves, thereby facilitating the sample retention and testing steps after the oil sand sample is taken out.

[0026] After sampling is completed, the power is transmitted by 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, and cooperating with the limiting edge to "twist off" the oil sand sample located inside the variable-diameter head 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

[0027] Figure 1 Schematic three-dimensional structure diagram of the present invention;

[0028] Figure 2 Schematic three-dimensional structure diagram of the mounting seat and the connecting member of the present invention;

[0029] Figure 3 Schematic cross-sectional view of the three-dimensional structure of the middle cylinder and the variable-diameter head of the present invention;

[0030] Figure 4 Schematic cross-sectional view of the three-dimensional structure of the variable-diameter head and the inner half cylinder of the present invention;

[0031] Figure 5 Schematic three-dimensional structure diagram of the sample holding cylinder and the elastic ring of the present invention;

[0032] Figure 6 Exploded view of the drill cylinder, the middle cylinder, and the inner half cylinder of the present invention;

[0033] Figure 7 Exploded view of the connecting member and the inner half cylinder of the present invention;

[0034] Figure 8 Schematic cross-sectional view of the three-dimensional structure of the variable-diameter head and the guiding ring of the present invention;

[0035] Figure 9 Schematic three-dimensional structure diagram of the sliding member and the rubber ring of the present invention.

[0036] 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 rib, 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 Embodiments

[0037] The following will be combined with the attached Figure 1 to the attached Figure 9A detailed description of the present invention is provided, and 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0038] Embodiment 1: This embodiment 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.

[0039] 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 pipe 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 pipe 2, a connecting member 4 located inside the drill pipe 2 is rotatably connected to the lower part of the mounting base 1, a middle pipe 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 pipe 5, a core cutter is provided at the lower part of the reducing head 6, in the direction from top to bottom, 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 pipe 5 do not rotate with the drill pipe 2 by relying on 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 pipe 2 and the middle pipe 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.

[0040] See Figures 3-6, the guiding component includes: two inner half cylinders 7 and a sample holding cylinder 8 that are symmetrically distributed front and back. The two inner half cylinders 7 are fitted together to form a cylinder and can be connected by means such as snap fasteners (the connection method of the two inner half cylinders 7 is not described or shown additionally); both inner half cylinders 7 are located inside the middle cylinder 5, and there is a gap between the inner half cylinder 7 and the middle cylinder 5. There is also a gap between the lower parts of the two inner half cylinders 7 and the reducer head 6. The upper parts of the two inner half cylinders 7 are commonly threadedly connected to the connecting piece 4. The inner diameter of the cylinder formed by the two inner half cylinders 7 is equal to the minimum inner diameter of the reducer 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 (the thickness of the sample holding cylinder 8 in the figure is only for illustration, and the influence 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 cylinder 7 is less than the friction coefficient between the oil sand sample and the inner half cylinder 7. The sample holding cylinder 8 is sleeved outside the two inner half cylinders 7, and the sample holding cylinder 8 blocks the lower openings of the two inner half cylinders 7.

[0041] The above settings can achieve that the sample holding cylinder 8 gradually wraps the oil sand sample entering between the two inner half cylinders 7 and separates 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 frictional resistance suffered by the oil sand sample during the movement into the inner half cylinder 7. On the one hand, it reduces the interference to the porosity and rock structure of the oil sand sample and reduces the detection error of the oil content rate. On the other hand, it facilitates the complete extraction of the oil sand sample.

[0042] When sampling an oil sand ore to detect its oil content rate, first determine the area to be sampled. The worker connects the mounting base 1 to the drill rig. The drill rig moves this device to the depth to be sampled and drives the mounting base 1 to rotate clockwise (this article takes Figure 1 the perspective of the top view as an example for description). Subsequently, set the drilling speed. The reducer head 6 first contacts the position to be sampled and moves down under the control of the drill rig. The core cutter on the reducer head 6 cuts the oil sand at the position to be sampled. Subsequently, the drill bit 3 contacts the position to be sampled and is used for drilling guidance; as the reducer head 6 moves down, the oil sand sample cut by the reducer head 6 contacts the lower side of the sample holding cylinder 8 and pushes the middle part of the sample holding cylinder 8 into the space between the two inner half cylinders 7. At this time, the opening of the sample holding cylinder 8 gradually moves down in the gap formed by the middle cylinder 5 and the inner half cylinder 7. In this way, relying on the sample holding cylinder 8 to separate the oil sand sample from the inner half cylinder 7 and reduce the frictional resistance of the oil sand sample when moving between the two inner half cylinders 7. Until the reducer head 6 moves down a height of the sample holding cylinder 8 in the oil sand layer, the sample holding cylinder 8 is completely turned over, that is, the sample holding cylinder 8 completely loses contact with the outside of the inner half cylinder 7. At this time, the drill rig controls the mounting base 1 to move upward while rotating.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] See also Figures 4-7 , semi-convex ridges 9 are provided at the joints on the inner sides of the two inner semi-cylinders 7, two adjacent semi-convex ridges 9 are in contact with each other, the upper side of the semi-convex ridges 9 is in contact with the lower side of the connecting piece 4, and the lower part of the semi-convex ridges 9 is provided with a gentle slope 901, and 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, the limiting ridges 601 and the two adjacent and mutually contacting semi-convex ridges 9 are located on the same vertical line, and the limiting ridges 601 coincide with the projections of the two mutually contacting semi-convex ridges 9 on the horizontal plane; the inner circumference of the two inner semi-cylinders 7 and the semi-convex ridges 9 thereon projected on the horizontal plane is equal to the outer diameter of the sample tube 8 after it is expanded.

[0047] The above arrangement can achieve that, in the process of the oil sand sample squeezing the sample tube 8 into between the two inner half-cylinders 7, the sample tube 8 is gradually deformed by the gentle slope 901, thereby reducing the probability of the sample tube 8 being damaged or broken by the sharp parts; the four semi-convex edges 9 are used to make the sample tube 8 have two symmetrically distributed depressions, which, on the one hand, eliminates the wrinkles of the sample tube 8 and reduces the influence of the wrinkles of the sample tube 8 on the rock structure of the oil sand sample; on the other hand, the depressions of the sample tube 8 are used to facilitate the oil sand sample to be divided into two halves, thereby facilitating the sample retention and detection steps after the oil sand sample is taken out; the limiting edge 601 makes the oil sand sample entering the reducer 6 have symmetrically distributed depressions, thereby preventing the oil sand sample from being squeezed at the semi-convex edges 9 and causing changes in porosity. At the same time, the limiting edge 601 can increase the resistance of the reducer 6 to circumferential rotation, thereby enhancing the stability of the reducer 6.

[0048] See also Figure 3 , Figure 4 and Figure 6A guide groove 602 is provided at the limiting edge 601 of the reducer 6, and the edge of the guide groove 602 is connected to the ring cutter.

[0049] The above setting can be realized that the guide groove 602 is used to reduce the thickness of the lower edge of the limiting edge 601. When the reducing head 6 moves into the oil sand layer, the reducing head 6 relies on the lower edge of the limiting edge 601 and the annular knife thereon to cut the oil sand layer, and at the same time, the guide groove 602 squeezes the excess oil sand after cutting to the outside.

[0050] Embodiment 3: This embodiment discloses a sampling device for detecting the oil content of oil sands based on hyperspectral detection. On the basis of embodiment 1, it facilitates the oil sand sample to enter the inner half cylinder 7.

[0051] See also Figure 6 and Figure 8 The reducer 6 is fixedly connected with a guide ring 10 , which is made of elastic rubber. The guide ring 10 is in contact with the sample tube 8 , and the inner diameter of the guide ring 10 is equal to the inner diameter of the inner half tube 7 .

[0052] The above arrangement can be used to guide the oil sand sample cut by the reducer 6 to between the two inner half cylinders 7 using the guide ring 10 .

[0053] Embodiment 4: This embodiment discloses a sampling device for detecting the oil content of oil sands based on hyperspectral. On the basis of Embodiment 3, the encapsulation of the sample tube 8 on the oil sands sample is enhanced.

[0054] See also Figures 3-6 An elastic ring 11 is fixed to the opening of the sample tube 8, and both inner half tubes 7 are in contact with the elastic ring 11. The diameter of the elastic ring 11 in a free state is half of the corresponding outer diameter of the sample tube 8 after it is expanded.

[0055] The above arrangement can achieve that, after the sample tube 8 is filled with the oil sand sample, the opening of the sample tube 8 can be closed by relying on the elasticity of the elastic ring 11, thereby reducing the probability of oil sand falling out of the sample tube 8, which is conducive to the complete removal of the oil sand sample; when the elastic ring 11 is closed, the elastic ring 11 contacts the upper part of the guide ring 10, and squeezes the upper part of the guide ring 10 to shrink inward and deform.

[0056] Embodiment 5: This embodiment discloses a sampling device for detecting the oil content of oil sands based on hyperspectral detection. On the basis of Embodiment 4, the friction resistance of the sample cylinder 8 when moving in the inner half cylinder 7 is reduced.

[0057] See also 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 below it is conveyed upward. A transmission cavity 121 is arranged inside the connecting piece 4. The fan wheel 13 is located inside the transmission cavity 121. The lower side of the connecting piece 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 piece 4 is provided with a plurality of main through holes 131 which are circumferentially equidistantly distributed and communicated with the transmission cavity 121. The inner half cylinder 7 is provided with auxiliary through holes 132 having the same number as 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 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. 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.

[0058] The above settings can achieve that, relying on the rotation of the fan wheel 13, the gas in the sample storage cavity 122 is conveyed into the air storage ring cavity 133, the air pressure in the sample storage cavity 122 is reduced, the resistance when the sample cylinder 8 moves deeper into the two inner half cylinders 7 is reduced, and the oil sand sample wrapped by the sample cylinder 8 is promoted to move deeper into the two inner half cylinders 7; as the fan wheel 13 rotates, the air pressure in the air storage ring cavity 133 increases, a downward thrust is applied to the elastic ring 11, the pulling force required for the sample cylinder 8 to pull the elastic ring 11 to move is reduced, the axial extrusion force applied by the sample cylinder 8 to the oil sand sample is reduced, and thus the influence on the porosity of the oil sand sample is reduced; relying on the air storage ring cavity 133 to temporarily store the gas in the sample storage cavity 122, and after the sampling is completed, the elastic ring 11 disengages from between the middle cylinder 5 and the inner half cylinder 7, so that the gas in the air storage ring cavity 133 flows out into the sampling hole (the sampling hole refers to the hole formed after drilling and sampling), and the negative pressure effect when the device is removed from the sampling hole is reduced, which is convenient for the device to be removed from the sampling hole.

[0059] 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 conveying it into the air storage ring cavity 133, so that the air pressure in the sample storage cavity 122 is reduced and the air pressure in the air storage ring cavity 133 is increased.

[0060] 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.

[0061] See Figure 4 , Figure 6 and Figure 9, a sliding member 14 is slidably connected within the two inner half cylinders 7. The sliding member 14 is detachably connected to the middle part of the sample holding cylinder 8, and the connection between the two can be achieved by means of a buckle (not elaborated and shown additionally here). The sliding member 14 is located within the sample storage cavity 122. Two symmetrically distributed grooves are provided on the sliding member 14, and the sliding member 14 slides along the four semi-convex ridges 9 through the two grooves thereon; a transmission member 141 is splined to the middle part of the sliding member 14, and a spring is fixedly connected between the sliding member 14 and the transmission member 141. Initially, the elastic force of the above spring is equal to the gravity of the transmission member 141. An internal thread is provided in the middle part of the transmission member 141, and a threaded portion 142 is provided at the lower part of the connecting column 12. The threaded portion 142 is an external thread, and the transmission member 141 can be threadedly connected to the connecting column 12 through the threaded portion 142. A rubber ring 15 is fixedly connected to the upper side of the sliding member 14, and the upper part of the transmission member 141 protrudes out of the rubber ring 15. And during actual use, the length of the transmission member 141 protruding out of the rubber ring 15 can be shortened, thereby reducing the influence of the displacement change during the threaded connection between the connecting column 12 and the transmission member 141 on the oil sand sample.

[0062] The above settings can achieve that when the oil sand sample fills the sample holding cylinder 8, power is transmitted through the threaded connection between the connecting column 12 and the transmission member 141, so that the transmission member 141 drives the sliding member 14, the inner half cylinder 7, the connecting member 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 within the variable diameter head 6 from the root, facilitating the complete extraction of the oil sand sample. At the same time, the connection between the connecting column 12 and the sliding member 14 provides a stable traction force for the sample holding cylinder 8 and the oil sand sample therein, avoiding the situation where the sample holding cylinder 8 slips out of the inner half cylinder 7.

[0063] During the process of sampling oil sand, as the inner half cylinder 7 moves downward, the oil sand sample squeezes the middle part of the sample holding cylinder 8 and the sliding member 14, keeping the heights of the middle part of the sample holding cylinder 8 and the sliding member 14 stable (i.e., moving upward relative to the inner half cylinder 7). At the same time, the middle part of the sample holding cylinder 8 has a tendency to move upward under the action of the negative pressure within the sample storage cavity 122, reducing the force required for the sample holding 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 member 141 contacts the connecting column 12, and the connecting column 12 squeezes the transmission member 141 to move downward and compresses the spring of the transmission member 141. As the connecting column 12 rotates and the mounting seat 1 moves downward, when the opening of the threaded portion 142 corresponds to the beginning of the internal thread of the transmission member 141, the transmission member 141 and the connecting column 12 achieve threaded connection. At the same time, the transmission member 141 quickly resets relative to the sliding member 14 under the drive of the connecting column 12, and the spring of the transmission member 141 restores.

[0064] During the process of the threaded connection between the sliding member 14 and the connecting column 12, the distance between the rubber ring 15 and the connecting member 4 gradually decreases until they finally come into contact and compress the rubber ring 15. The rubber ring 15 provides buffering for the contact between the connecting member 4 and the sliding member 14, and at the same time extends the time for the connecting column 12 to drive the transmission member 141 and the sliding member 14 to accelerate. Subsequently, the sliding member 14 drives the inner half-cylinder 7 to rotate through the groove and semi-convex rib 9 thereon. The inner half-cylinder 7 drives the connecting member 4, the middle cylinder 5, and the variable-diameter head 6 to rotate. The variable-diameter head 6 drives the oil sand sample therein to rotate by relying on the limiting rib 601 thereon, "twisting off" the oil sand sample from its root. Subsequently, the drill rig is controlled to take out the device together with the oil sand sample.

[0065] After taking out the device, the worker removes the drill cylinder 2 from the mounting seat 1 and removes the middle cylinder 5 from the connecting member 4. Subsequently, the mounting seat 1 is rotated counterclockwise to gradually reduce the contact area between the connecting column 12 and the transmission member 141. During this process, the worker pulls the sample cylinder 8 outwards from the inner half-cylinder 7, causing the sample cylinder 8 to drive the oil sand sample and the sliding member 14 therein to move downward together. Finally, both the sample cylinder 8 and the sliding member 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 member 14, and processes and detects the sample cylinder 8 and the oil sand sample therein. Subsequently, the worker clamps the new sample cylinder 8 to the sliding member 14, inserts the sliding member 14 into the lower opening of the cylinder formed by the two inner half-cylinders 7, sleeved the new sample cylinder 8 outside the two inner half-cylinders 7 again, and stretched and stored the elastic ring 11 on the new sample cylinder 8 outside the two inner half-cylinders 7. Subsequently, the middle cylinder 5 is installed at the corresponding position of the connecting member 4 in sequence, and the drill cylinder 2 is installed at the corresponding position of the mounting seat 1, waiting for the next sampling.

[0066] Example 7: This example discloses a method for detecting the oil content rate of oil sand ore based on hyperspectral.

[0067] See Figures 1-9 , the method for detecting the oil content rate of oil sand ore based on hyperspectral, based on the above-mentioned sampling device for detecting the oil content rate of oil sand ore based on hyperspectral, includes the following steps:

[0068] Step 1: Collect relevant information and data of the oil sand ore and analyze it to determine the area that needs to be detected by hyperspectral.

[0069] Step 2: Drill and core to extract oil sand samples.

[0070] Step 3: Use a hyperspectral instrument to emit and receive full-band hyperspectral signals towards the taken oil sand samples.

[0071] Step 4: Denoise the received hyperspectral signals to remove interference spectra.

[0072] Step 5: Extract useful information from the processed hyperspectral signals.

[0073] Step Six: Further process and analyze the hyperspectral data by combining basic data such as geology and logging;

[0074] Step Seven: Establish a mathematical model for iterative fitting;

[0075] Step Eight: Output the detection result of the oil content rate of the oil sand ore according to the result of the mathematical model.

[0076] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection, comprising: A mounting base (1), a drill pipe (2) and a drill bit (3). The mounting base (1), the drill pipe (2) and the drill bit (3) are sequentially threadedly connected in the top-down direction. The mounting base (1) is rotatably connected with a connecting member (4) located inside the drill pipe (2). The lower side of the connecting member (4) is threadedly connected with a middle cylinder (5). The lower side of the middle cylinder (5) is threadedly connected with a variable diameter head (6). A ring knife is arranged at the lower part of the variable diameter head (6), and the ring knife at the lower part of the variable diameter head (6) extends out of the drill bit (3). The feature is that a guiding component for reducing the movement resistance of the oil sand sample is arranged on the connecting member (4); The guiding component includes: two inner half cylinders (7) symmetrically distributed and a sample holding cylinder (8). Both of the two inner half cylinders (7) are located inside the middle cylinder (5) and are jointly threadedly connected with the connecting member (4). The two inner half cylinders (7) are mutually attached to form a cylinder, and the inner diameter of the formed cylinder is equal to the minimum inner diameter of the variable diameter head (6). The sample holding cylinder (8) is made of a flexible material. The sample holding cylinder (8) is sleeved outside the two inner half cylinders (7), and the sample holding cylinder (8) blocks the lower openings of the two inner half cylinders (7); Half convex ribs (9) are arranged at the joints of the two inner half cylinders (7). Adjacent two of the half convex ribs (9) are in contact with each other. The half convex ribs (9) are in contact with the lower side of the connecting member (4). A slow inclined surface (901) is arranged at the lower part of the half convex ribs (9). The height of the slow inclined surface (901) gradually decreases in the direction from inside to outside. Two symmetrically distributed limiting ribs (601) are arranged on the inner side of the variable diameter head (6). The limiting ribs (601) coincide with the projections on the horizontal plane of two adjacent and mutually contacting half convex ribs (9); A connecting column (12) is fixedly connected to the lower side of the mounting base (1). A fan wheel (13) is fixedly connected to the connecting column (12). A transmission cavity (121) for accommodating the fan wheel (13) is arranged inside the connecting member (4). The connecting member (4), the two inner half cylinders (7) and the sample holding cylinder (8) jointly form a sample storage cavity (122). 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) communicated with the transmission cavity (121). The inner half cylinder (7) is provided with auxiliary through holes (132) with the same number as the main through holes (131). The auxiliary through holes (132) are communicated with the adjacent main through holes (131). An elastic ring (11) is fixedly connected to the opening of the sample holding cylinder (8). 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) jointly 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 two inner half-cylinders (7) are jointly and slidably connected with a sliding member (14). The sliding member (14) is spline-connected with a transmission member (141). A spring is fixedly connected between the transmission member (141) and the sliding member (14). The connecting column (12) is provided with a threaded portion (142) for being threadedly connected with the transmission member (141).

2. The sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection according to claim 1, wherein A guiding groove (602) connected to the ring knife is arranged at the limiting edge (601) of the variable-diameter head (6). The guiding groove (602) is used for discharging the oil sand outwards.

3. The sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection according to claim 2, wherein, The inner perimeter of the projection 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).

4. The sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection according to claim 3, wherein, The variable-diameter head (6) is fixedly connected with a guiding ring (10). The guiding ring (10) is made of an elastic material, and the inner diameter of the guiding ring (10) is equal to the inner diameter of the inner half-cylinders (7) for guiding the oil sand sample between the two inner half-cylinders (7).

5. The sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection according to claim 4, characterized in that, Both of the two inner half-cylinders (7) are in contact with the elastic ring (11). The diameter of the elastic ring (11) in the free state is smaller than the inner diameter of the inner half-cylinders (7).

6. The sampling device for detecting the oil content rate of oil sand ore based on hyperspectral detection according to claim 5, characterized in that, The sliding member (14) is fixedly connected with a rubber ring (15). The rubber ring (15) is used for reducing the impact force when the sliding member (14) collides with the connecting member (4).

7. A method for detecting the oil content rate of oil sand ore based on hyperspectral detection, using a sampling device for detecting the oil content rate of oil sand ore according to claim 6, to detect the oil content rate of the oil sand ore, characterized in that, 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 for core sampling to extract the oil sand sample; Step 3: Use a hyperspectral instrument to emit and receive full-band hyperspectral signals towards the extracted oil sand sample; Step 4: Perform denoising processing on the received hyperspectral signals to remove the interference spectra; Step 5: Extract useful information from the processed hyperspectral signals; Step 6: Further process and analyze the hyperspectral data in combination with geological and logging basic data; Step 7: Establish a mathematical model for iterative fitting; Step 8: According to the results of the mathematical model, output the detection result of the oil content rate of the oil sand ore.

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