Underground equipment for lifting sample based on respiration

Abstract

The invention relates to the technical field of deep ground experiments, in particular to underground respiration-based sample lifting equipment which comprises a flow storage tank, the top of the flow storage tank is fixedly connected with an adjusting assembly, the top of the adjusting assembly is fixedly connected with a ground photovoltaic panel, the bottom of the flow storage tank is fixedly connected with a stratum control pipe, and the bottom of the stratum control pipe is fixedly connected with the ground photovoltaic panel. The bottom of the formation control pipe is fixedly connected with a fluid interaction pipe column, the outer wall of the formation control pipe is fixedly connected with a packing element, the fluid interaction pipe column is arranged and is of a cylindrical porous structure, and fluid is accurately screened by the pipe wall according to the hydrophilic and hydrophobic characteristics and the hydrophilic and hydrophobic air characteristics. When fluid is injected into the fluid storage tank, internal pressure of the fluid storage tank increases progressively to drive formation fluid in a drilling well to diffuse orderly to a shaft wall and a stratum with a specified depth through a porous pipe wall, pressure drop promotes the formation fluid to flow back to a pipe column when the fluid is recycled by the fluid storage tank, formation-shaft fluid interaction circulation is triggered, and the interaction process is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of deep earth experiments, and in particular to equipment for lifting samples underground based on respiration. Background Art

[0002] In the mining and exploration of underground resources such as oil and natural gas, as well as deep geological experiments, obtaining representative formation fluid samples is crucial to accurately understand the characteristics of the formation and formulate scientific and reasonable mining plans. Formation fluids contain a lot of key information about formation structure, oil and gas reserves, and fluid properties. Its accurate analysis results can provide solid data support for oil and gas mining projects.

[0003] In the prior art, current deep well sampling equipment is mainly used for direct sampling of formation fluids. The fluid sample coverage area is small, the fluid in the wellbore cannot be forced to convect with the formation fluid, the interaction time between the wellbore and the samples in the formation is long, and sampling in the wellbore cannot obtain highly representative samples. Therefore, the sampling time representativeness is poor, the sampling influence range is small, and it is even impossible to obtain the actual underground fluid situation, and the representativeness of the formation fluid samples cannot be guaranteed. Summary of the invention

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the present invention to solve the technical problems is: an equipment for lifting samples underground based on respiration, comprising: a flow storage tank, the top of the flow storage tank is fixedly connected with an adjusting component, the top of the adjusting component is fixedly connected with a ground photovoltaic panel, the bottom of the flow storage tank is fixedly connected with a formation control pipe, the bottom of the formation control pipe is fixedly connected with a fluid interaction pipe column, the formation control pipe and the fluid interaction pipe column can be installed and fixed on supports such as wire ropes or oil pipes according to the drilling depth and type, the outer wall of the formation control pipe is fixedly connected with a sealing element, and the formation control pipe penetrates the inner wall of the sealing element, the outer wall of the sealing element is fixedly connected with the wellbore, and the sealing There are joints at the top and bottom of the isolation element, and the pipeline passing through the isolation element is connected to the upper and lower joints. The fluid in the formation control pipe can flow through the isolation element 8. The isolation element is fixed and isolated in the wellbore at the specified depth of the drilling according to the experimental requirements. After the isolation element reaches the specified layer, the elements such as the packer, bridge plug, isolation baffle, etc. are stuck in the wellbore according to the selected elements and their working methods. The corresponding position in the wellbore is stably located, which plays a role in fixing and separating different layers and ensuring the normal operation of various pipelines and other components, and forms a relatively fixed spatial position relationship with the wellbore. The fluid interaction column is a cylindrical porous structure, and the pipe wall accurately selects the fluid according to the hydrophobic and gas-philic properties. When the fluid is injected into the flow storage tank, the internal pressure increases and drives the drilling fluid to diffuse orderly through the porous pipe wall to the wellbore wall and the formation. When the fluid is recovered by the flow storage tank, the pressure drop prompts the formation fluid to flow back to the pipe column. The flow storage tank can inject and recover the fluid in the pipe multiple times, triggering the interactive circulation of the fluid in the formation-wellbore, and improving the representativeness of the sample.

[0005] A pressure supply device, wherein the pressure supply device is located on the outside of the flow storage tank, the outside of the pressure supply device is fixedly connected with a connecting pipe, the outside of the connecting pipe is fixedly connected with a sampling tube, the bottom of the sampling tube is fixedly connected with a one-way valve, the bottom of the one-way valve is fixedly connected with a sampling tube, the bottom of the sampling tube is fixedly connected with a filter assembly, the pressure supply device comprises a protective shell, the inside of the protective shell is fixedly connected with a pressure delivery pipe, one end of the pressure delivery pipe is fixedly connected with a pressure source, and the pressure source can be a high-pressure driving fluid (high-pressure gas cylinder or pressure pump) in the phase of gas (nitrogen, helium, etc.), liquid (pure water), oil, etc. according to the phase state of the formation fluid sample and the sampling requirements. The other end of the pressure delivery pipe is fixedly connected to a four-way joint, the end of the four-way joint away from the pressure delivery pipe is fixedly connected to a control pressure pipe, the end of the four-way joint close to the protective shell is fixedly connected to a pressure relief pipe, the inner side of the protective shell is fixedly connected to a connecting pipe, the outer side of the connecting pipe is fixedly connected to a three-way joint, the bottom end of the three-way joint is fixedly connected to a sample outlet pipe, the one-way valve only allows the formation fluid sample to flow from one side of the sampling tube to one side of the sampling tube, and the formation fluid sample that passes through the one-way valve and enters the sampling tube, each pipeline in the pressure supply device can be controlled to open and close by the valve.

[0006] Preferably, the outer wall of the sampling tube is fixedly connected to the inner side of the isolation element, and the sampling tube 11 passes through the inner wall of the isolation element 8, and can be installed and fixed on supports such as wire ropes or oil pipes according to the drilling depth and type. The fluid interaction column and the filter assembly are both located below the isolation element. The inner side of the protective shell is fixedly connected to the outer side of the control pressure tube, and the end of the control pressure tube away from the four-way joint is fixedly connected to the top of the connecting pipe, and the end of the connecting pipe away from the three-way joint is fixedly connected to the top of the sampling tube. According to demand, high-pressure driving fluid including nitrogen flows out from the pressure source and starts to be transmitted along the pressure delivery pipe. The pressure delivery pipe serves as the first section of the high-pressure driving fluid transmission channel, and delivers the high-pressure gas to the four-way joint in a stable and orderly manner.

[0007] Preferably, the adjustment assembly includes a fixed cylinder, the top of the inner wall of the fixed cylinder is slidingly connected to a spherical connecting seat, the inner wall of the fixed cylinder is fixedly connected to a fixing plate, the bottom of the fixing plate is fixedly connected to a supporting seat, the bottom of the fixed cylinder is rotatably connected to a knob, the top of the knob is fixedly connected to a hollow threaded rod, the outer wall of the hollow threaded rod is threadedly connected to an internal threaded ring, the top of the internal threaded ring is fixedly connected to a connecting rod, and the top of the connecting rod is fixedly connected to a fixing seat, the fixed cylinder provides a stable supporting structure, the spherical connecting seat is connected to the bottom of the ground photovoltaic panel, giving it flexible multi-directional rotation capability to adapt to different light directions and intensity changes.

[0008] Preferably, the top of the spherical connecting seat is fixedly connected to the bottom of the ground photovoltaic panel, the bottom of the support seat is fixedly connected to the top of the flow storage tank, the side walls of the internal threaded ring and the fixed seat are both slidably connected to the inner wall of the fixed cylinder, and the outer wall of the connecting rod is slidably connected to the inner wall of the fixed plate. When the knob is turned, the hollow threaded rod rotates and drives the internal threaded ring to slide upward. At this time, the internal threaded ring drives the connecting rod and the fixed seat to move upward together, so that the fixed seat can press the spherical connecting seat and then lock it.

[0009] Preferably, the filter assembly includes a shell, the inner wall of the shell is fixedly connected with a fixing ring, the inner side of the fixing ring is slidably connected with a filter plate, the top of the fixing ring is fixedly connected with an annular filter screen, the top of the annular filter screen is fixedly connected with a guide ring, the top of the guide ring is fixedly connected with a guide pipe, the inner side of the guide ring is fixedly connected with a diverter plate, the inner side of the diverter plate is rotatably connected with a cleaning component, when the surface of the filter plate is clogged, the fluid impacts the filter plate and slides upward, at which time the fluid can pass through the annular filter screen into between the guide ring and the shell, and then be ejected from the guide pipe.

[0010] Preferably, the top of the shell is fixedly connected to the bottom end of the injection tube, the inner wall of the shell is fixedly connected to the side wall of the guide ring, the side wall of the filter plate is slidingly connected to the inner side of the annular filter, and the center of the filter plate is rotatably connected to the bottom of the cleaning component. The fluid sprayed from the guide tube just hits the surface of the fan blade, which can further assist the rotation of the fan blade. When the filter plate is blocked and the self-cleaning mechanism may be affected by the blockage, the impact force of the sprayed fluid is used to enhance the cleaning effect.

[0011] Preferably, the cleaning component includes a hollow rotating shaft, a fan blade is fixedly connected to the outer side of the hollow rotating shaft, a compression spring is fixedly connected to the inner side of the fan blade, a sliding rod is fixedly connected to the bottom of the compression spring, and a scraper is fixedly connected to the bottom of the sliding rod. When the fluid impacts the filter plate, the sliding mechanism of the sliding rod can be relative to the hollow rotating shaft so that the filter plate can slide up and down along the inner side of the fixing ring and force the compression spring to be compressed, thereby buffering the impact force on the filter plate.

[0012] Preferably, the outer side of the hollow shaft is rotatably connected to the center of the diverter plate, the outer wall of the sliding rod is slidably connected to the inner wall of the hollow shaft, the outer wall of the bottom of the sliding rod is rotatably connected to the center of the filter plate, and the top of the scraper is slidably connected to the bottom of the filter plate. When the scraper rotates, it can scrape off impurities attached to the surface of the filter plate to prevent the filter plate from being blocked.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The present invention sets a fluid interaction column, which is a cylindrical porous structure, and the tube wall accurately selects fluid according to its hydrophobic and gas-affinity characteristics. When the fluid is injected into the flow storage tank, the internal pressure increases and drives the formation fluid in the well to diffuse orderly through the porous tube wall to the wellbore wall and the formation at a specified depth. When the fluid is recovered by the flow storage tank, the pressure drop prompts the formation fluid to flow back to the column, triggering the fluid interaction cycle in the formation and the wellbore, completing the interaction process. Through periodic interaction, the samples collected from the wellbore can track the dynamic changes of the formation in real time, thereby improving the representativeness of the formation fluid samples.

[0015] 2. The present invention provides an adjustment component, and the spherical connector is connected to the bottom of the ground photovoltaic panel, giving it flexible multi-directional rotation ability to adapt to different light directions and intensity changes. When the knob is turned, the hollow threaded rod rotates and drives the internal threaded ring to slide upward. At this time, the internal threaded ring drives the connecting rod and the fixed seat to move upward together, so that the fixed seat can press the spherical connector tightly and then lock it.

[0016] 3. The present invention sets a filter assembly, which is used to filter the fluid sucked into the sampling tube. The fluid flows in from the sampling tube, is first filtered through the filter plate, and then flows upward through the diverter plate. The upward-flowing fluid can drive the fan blades in the cleaning component to rotate during the flow, thereby causing the hollow shaft to rotate. At this time, the sliding rod drives the scraper to rotate along with the hollow shaft. When the scraper rotates, it can scrape off impurities attached to the surface of the filter plate to prevent the filter plate from being blocked.

[0017] 4. The present invention provides a cleaning component. When the fluid impacts the filter plate, the sliding rod can slide relative to the sliding mechanism of the hollow shaft so that the filter plate can slide up and down along the inner side of the fixed ring and force the compression spring to be compressed, thereby buffering the impact force on the filter plate and extending the service life of the filter plate.

[0018] 5. The present invention sets a filter assembly. When the surface of the filter plate is clogged, the fluid impacts the filter plate to slide upward. At this time, the fluid can pass through the annular filter screen into the space between the guide ring and the shell, and then be ejected from the guide tube. At this time, the fluid ejected from the guide tube just impacts the surface of the fan blade, which can further assist the rotation of the fan blade. When the filter plate is clogged and the self-cleaning mechanism may be affected by the clog, the impact force of the ejected fluid is used to enhance the cleaning effect, which helps to remove impurities clogged on the filter plate as soon as possible, so that the filter plate can resume its normal filtering function as soon as possible, and the entire filter assembly can return to an efficient and stable working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure inside the present invention;

[0021] Figure 3 It is a structural schematic diagram of the pressure supply device of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the regulating assembly of the present invention;

[0023] Figure 5 is a schematic structural diagram of the filter assembly of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the annular filter screen of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the filter plate of the present invention;

[0026] Figure 8 It is a schematic structural diagram of the cleaning component of the present invention.

[0027] In the figure: 1, flow storage tank; 2, wellbore; 3, adjustment component; 4, ground photovoltaic panel; 5, pressure supply device; 6, formation control pipe; 7, fluid interaction string; 8, packing element; 9, connecting pipe; 10, sampling pipe; 11, injection pipe; 12, one-way valve; 13, filter component; 31, fixing cylinder; 32, spherical connector; 33, fixing plate; 34, support seat; 35, knob; 36, hollow threaded rod; 37, internal thread ring; 38, connecting rod; 39, fixing seat; 51, protective Shell; 52, pressure source; 53, pressure delivery pipe; 54, four-way joint; 55, control pressure pipe; 56, sample outlet pipe; 57, three-way joint; 58, connecting pipe; 59, pressure relief pipe; 131, shell; 132, fixing ring; 133, guide ring; 134, cleaning part; 135, filter plate; 136, annular filter; 137, guide pipe; 138, diverter plate; 341, hollow shaft; 342, fan blade; 343, compression spring; 344, sliding rod; 345, scraper. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0029] Example: See Figure 1 - Figure 8 The present invention provides a technical solution: an underground breathing-based sample lifting device, comprising:

[0030] A flow storage tank 1, the top of which is fixedly connected with an adjustment component 3, the top of which is fixedly connected with a ground photovoltaic panel 4, the bottom of which is fixedly connected with a formation control pipe 6, the bottom of which is fixedly connected with a fluid interaction column 7, the formation control pipe 6 and the fluid interaction column 7 can be installed and fixed on supports such as wire ropes or oil pipes according to the depth and type of drilling, the outer wall of the formation control pipe 6 is fixedly connected with a packing element 8, and the formation control pipe 6 passes through the inner wall of the packing element 8, the outer wall of the packing element 8 is fixedly connected with a wellbore 2, in this example, the packing element 8 is a packer, the outer wall of which is clamped in the wellbore inner seat by increasing the outer diameter by hydraulic pressure or other means The outer wall is sealed and fixed, and the outer diameter is increased by hydraulic pressure or other means to be stuck in the wellbore and sealed. The packer 8 is sealed in the wellbore 2 at the specified depth of drilling according to the experimental requirements. The packer 8 is installed on the oil pipe. The top and bottom of the packer 8 are provided with joints for connecting other pipelines. The packer 8 can be sealed and unsealed. The bottom of the formation control pipe 6 is fixedly connected with a fluid interaction pipe column 7. The formation control pipe 6 and other downhole pipelines are fixedly installed on the oil pipe. The working depth of the packer 8 and the above-mentioned downhole pipelines in the drilling can be adjusted by the length of the oil pipe, which can meet the drilling requirements of deep geological experiments. The packer 8 is sealed in the wellbore 2 at the specified depth of drilling according to the experimental requirements;

[0031] The pressure supply device 5 is located on the outside of the flow storage tank 1. Each pipeline in the pressure supply device 5 can be opened and closed by a valve. A connecting pipe 9 is fixedly connected to the outside of the pressure supply device 5. A sampling tube 10 is fixedly connected to the outside of the connecting tube 9. A one-way valve 12 is fixedly connected to the bottom of the sampling tube 10. A sampling tube 11 is fixedly connected to the bottom of the one-way valve 12. A filter component 13 is fixedly connected to the bottom of the sampling tube 11. The ground photovoltaic panel 4 absorbs solar energy and converts it into electrical energy and optical signals, which are stably transmitted to the control system of the flow storage tank 1 through the regulating component 3. The flow storage tank 1 accurately controls the injection or recovery of the formation interactive fluid according to the signal. When the ground photovoltaic panel 4 receives the changes in environmental parameters such as light intensity and temperature to generate signal instructions, the flow storage tank 1 responds quickly, accurately delivers or recovers fluid to the formation through the formation control pipe 6, actively regulates the state of the formation fluid, promotes the full interaction between the formation and the fluid in the wellbore 2, expands the coverage of sample information, improves representativeness, and helps mining personnel accurately grasp the dynamic characteristics and distribution laws of the formation fluid. The formation control pipe 6 connects the flow storage tank 1 and the fluid interaction column 7, and accurately controls the fluid flow, direction and pressure according to the instructions of the flow storage tank 1. It cooperates with the isolation element 8 on the inner wall of the wellbore 2 to construct an independent and stable interactive space, reduce the interference of fluid cross-flow and other factors at different depths in the wellbore 2, and the fluid interaction column 7 is a cylindrical porous structure. The pipe wall accurately selects fluids according to the hydrophobic and gas-philic characteristics. When fluid is injected into the flow storage tank 1, the internal pressure increases gradually, driving the drilling fluid to diffuse orderly through the porous pipe wall to the wall of the wellbore 2 and the formation, triggering the fluid interaction circulation between the formation and the wellbore 2; when the flow storage tank 1 recovers the fluid, the pressure drop causes the formation fluid to flow back to the pipe string, completing the interaction process. Through periodic interaction, the samples collected in the wellbore 2 can track the dynamic changes of the formation in real time;

[0032] The pressure supply device 5 includes a protective shell 51, a pressure delivery pipe 53 is fixedly connected to the inner side of the protective shell 51, one end of the pressure delivery pipe 53 is fixedly connected to a pressure source 52, the other end of the pressure delivery pipe 53 is fixedly connected to a four-way joint 54, the end of the four-way joint 54 away from the pressure delivery pipe 53 is fixedly connected to a control pressure pipe 55, the end of the four-way joint 54 close to the protective shell 51 is fixedly connected to a pressure relief pipe 59, a connecting pipe 58 is fixedly connected to the inner side of the protective shell 51, a three-way joint 57 is fixedly connected to the outer side of the connecting pipe 58, and a sample outlet pipe 56 is fixedly connected to the bottom end of the three-way joint 57. The outer wall of the sample inlet pipe 11 is connected to the packing element. 8 is fixedly connected to the inner side of the isolation element 8, and the sampling tube 11 passes through the inner wall of the isolation element 8 and can be installed and fixed on supports such as wire ropes or oil pipes according to the drilling depth and type. The fluid interaction column 7 and the filter assembly 13 are both located below the isolation element 8. The inner side of the protective shell 51 is fixedly connected to the outer side of the control pressure tube 55, and the end of the control pressure tube 55 away from the four-way joint 54 is fixedly connected to the top of the connecting pipe 9, and the end of the connecting pipe 58 away from the three-way joint 57 is fixedly connected to the top of the sampling tube 10. The pressure source 52 located on the inner side of the protective shell 51 of the pressure supply device 5 serves as the gas source of the entire system and plays a key role in power supply. In this example, the pressure source 52 is a high-pressure nitrogen bottle, which stores high-pressure nitrogen in advance. When the system is not working, the high-pressure gas in the pressure source 52 enters the connecting pipe 9 and the sampling pipe 10 through the valve to fill the pipeline. The pressure in the pipeline is greater than the formation fluid pressure, which prevents the formation fluid from entering the pipeline. When the system is started, under the control of the valve, the high-pressure gas in the connecting pipe 9 and the sampling pipe 10 is first emptied through the connecting pipe 58 and the pressure relief pipe 59. At this time, the pressure in the pipeline drops, and the formation fluid begins to be sampled through the injection pipe 11. The bottom of the injection pipe 11 is located near the bottom of the wellbore 2, and it can accurately contact the formation fluid sample to be collected. The formation fluid sample that enters the injection pipe 11 through the filter assembly 13 continues to flow upward under the continuous pressure difference drive. The one-way valve 12 only allows the formation fluid sample to flow from one side of the injection pipe 11 to the side of the connecting pipe 9 and the sampling pipe 10. When the high-pressure gas in the pipe is emptied, the formation fluid injection is also completed. After the formation fluid sampling is completed, the valve is controlled to allow high-pressure nitrogen to flow out from the pressure source 52 and start to be transmitted along the pressure delivery pipe 53. The pressure delivery pipe 53 serves as the first section of the nitrogen transmission channel, and stably and orderly delivers the high-pressure gas to the four-way joint 54. The gas is then transmitted through the control pressure pipe 55. After the high-pressure gas enters the connecting pipe 9, it continues to flow into the sampling pipe 10, passes through the one-way valve 12 and enters the connecting pipe 9 and the formation fluid sample at the bottom and the sampling pipe 10. With the continuous flow of gas in the connecting pipe 9 and the sampling pipe 10 and the push of the overall pressure difference, it continues to flow to the connecting pipe 58.Under the action of high-pressure gas in the sampling tube 10, the fluid sample in the connecting tube 9 and the sampling tube 10 flows out of the connecting tube 58 and finally enters the sampling tube 56. After the sampling is completed, the control valve allows the connecting tube 9 and the sampling tube 10 to be filled with high-pressure gas again to prepare for the next sampling. Among them, a pressure balancing tube is connected between the three-way connector 57 and the four-way connector 54, and the pressure in the pressure tube 55 and the connecting tube 58 and the connected pipes can be balanced and controlled by adjusting the valve on the pressure balancing tube.

[0033] The adjusting assembly 3 includes a fixed cylinder 31, the top of the inner wall of the fixed cylinder 31 is slidably connected with a spherical connecting seat 32, the inner wall of the fixed cylinder 31 is fixedly connected with a fixing plate 33, the bottom of the fixing plate 33 is fixedly connected with a supporting seat 34, the bottom of the fixed cylinder 31 is rotatably connected with a knob 35, the top of the knob 35 is fixedly connected with a hollow threaded rod 36, the outer wall of the hollow threaded rod 36 is threadedly connected with an internal threaded ring 37, the top of the internal threaded ring 37 is fixedly connected with a connecting rod 38, the top of the connecting rod 38 is fixedly connected with a fixing seat 39, and the ball The top of the spherical connection seat 32 is fixedly connected to the bottom of the ground photovoltaic panel 4, the bottom of the support seat 34 is fixedly connected to the top of the flow storage tank 1, the side walls of the internal thread ring 37 and the fixed seat 39 are both slidably connected to the inner wall of the fixed cylinder 31, the outer wall of the connecting rod 38 is slidably connected to the inner wall of the fixed plate 33, the adjustment component 3 can adjust the deflection angle of the ground photovoltaic panel 4, the fixed cylinder 31 provides a stable support structure, and the spherical connection seat 32 connects to the bottom of the ground photovoltaic panel 4, giving it flexible multi-directional rotation ability to adapt to different light directions and intensity changes. When the knob 35 is turned, the hollow threaded rod 36 rotates and drives the internal thread ring 37 to slide upward. At this time, the internal thread ring 37 drives the connecting rod 38 and the fixed seat 39 to move upward together, so that the fixed seat 39 can press the spherical connection seat 32 and then lock it; wherein the fixed plate 33 can limit the rotation of the internal thread ring 37 through the connecting rod 38, so that it can only slide in the fixed cylinder 31, and the support seat 34 provides stable support for the adjustment component 3.

[0034] The filter assembly 13 includes a shell 131, the inner wall of the shell 131 is fixedly connected to a fixing ring 132, the inner side of the fixing ring 132 is slidably connected to a filter plate 135, the top of the fixing ring 132 is fixedly connected to an annular filter screen 136, the top of the annular filter screen 136 is fixedly connected to a guide ring 133, the top of the guide ring 133 is fixedly connected to a guide tube 137, the inner side of the guide ring 133 is fixedly connected to a diverter plate 138, the inner side of the diverter plate 138 is rotatably connected to a cleaning component 134, the top of the shell 131 is fixedly connected to the bottom end of the sample injection tube 11, the inner wall of the shell 131 is fixedly connected to the side wall of the guide ring 133, the side wall of the filter plate 135 is slidably connected to the inner side of the annular filter screen 136, and the center of the filter plate 135 is rotatably connected to the bottom of the cleaning component 134. The cleaning component 134 includes a hollow shaft 341, a fan blade 342 is fixedly connected to the outer side of the hollow shaft 341, a compression spring 343 is fixedly connected to the inner side of the fan blade 342, a sliding rod 344 is fixedly connected to the bottom of the compression spring 343, a scraper 345 is fixedly connected to the bottom of the sliding rod 344, the outer side of the hollow shaft 341 is rotatably connected to the center of the diverter plate 138, the outer wall of the sliding rod 344 is slidably connected to the inner wall of the hollow shaft 341, the outer wall of the bottom of the sliding rod 344 is rotatably connected to the center of the filter plate 135, and the scraper 345 The top of the filter assembly 135 is slidably connected to the bottom of the filter plate 135. The filter assembly 13 is used to filter the fluid sucked into the sample injection tube 11. The fluid flows in from the sample injection tube 11, first passes through the filter plate 135 for filtering, and then flows upward through the diverter plate 138. The fluid flowing upward can drive the fan blades 342 in the cleaning component 134 to rotate during the flow process, thereby causing the hollow shaft 341 to rotate. At this time, the sliding rod 344 drives the scraper 345 to rotate along with the hollow shaft 341. The scraper 345 can remove the attached to the filter plate 13 when rotating. 5, the impurities on the surface of the filter plate 135 are scraped off to prevent the filter plate 135 from being blocked; at the same time, when the fluid impacts the filter plate 135, the sliding mechanism of the sliding rod 344 relative to the hollow rotating shaft 341 allows the filter plate 135 to slide up and down along the inner side of the fixing ring 132, and forces the compression spring 343 to be compressed, thereby buffering the impact force on the filter plate 135, thereby extending the service life of the filter plate 135; when the surface of the filter plate 135 is blocked, the fluid impacts the filter plate 135 to slide upward, and at this time the fluid can enter through the annular filter screen 136 The fluid between the guide ring 133 and the shell 131 is then ejected from the guide tube 137. At this time, the fluid ejected from the guide tube 137 just hits the surface of the fan blade 342, which can further assist the rotation of the fan blade 342. When the filter plate 135 is blocked and the self-cleaning mechanism may be affected by the blockage, the impact force of the ejected fluid is used to enhance the cleaning effect, which helps to remove impurities blocked on the filter plate 135 as soon as possible, so that the filter plate 135 can resume its normal filtering function as soon as possible, and the entire filter assembly 13 can return to an efficient and stable working state.

[0035] Working principle:

[0036] The pressure source 52 located inside the protective shell 51 of the pressure supply device 5 serves as the sampling drive source of the entire system and plays a key role in power supply. The nitrogen bottle of the pressure source 52 stores high-pressure nitrogen in advance.

[0037] When the system is not working, the high-pressure gas in the pressure source 52 enters the connecting pipe 9 and the sampling pipe 10 through the valve to fill the pipeline. The pressure in the pipeline is greater than the formation fluid pressure, preventing the formation fluid from entering the pipeline; when the system is started, under the control of the valve, the high-pressure gas in the connecting pipe 9 and the sampling pipe 10 is first emptied through the connecting pipe 58 and the pressure relief pipe 59. At this time, the pressure in the pipeline drops, and the formation fluid begins to be sampled through the injection pipe 11. The bottom of the injection pipe 11 is located near the bottom of the wellbore 2, and it can accurately contact the formation fluid sample to be collected. The formation fluid sample that enters the injection pipe 11 through the filter assembly 13 continues to flow upward under the continuous pressure difference drive. The one-way valve 12 only allows the formation fluid sample to flow from one side of the injection pipe 11 to the side of the connecting pipe 9 and the sampling pipe 10. When the high-pressure gas in the pipe is emptied, the formation fluid injection is also completed. After the formation fluid sampling is completed, the valve is controlled to allow high-pressure nitrogen to flow out from the pressure source 52 and start to be transmitted along the pressure delivery pipe 53. The pressure delivery pipe 53 serves as the first section of the nitrogen transmission channel, and stably and orderly delivers the high-pressure gas to the four-way joint 54. The gas is then transmitted through the control pressure pipe 55. After the high-pressure gas enters the connecting pipe 9, it continues to flow into the sampling pipe 10, passes through the one-way valve 12 and enters the connecting pipe 9 and the formation fluid sample at the bottom and the sampling pipe 10. With the continuous flow of gas in the connecting pipe 9 and the sampling pipe 10 and the push of the overall pressure difference, it continues to flow to the connecting pipe 58. Under the negative pressure of the high-pressure gas flowing in the sampling tube 10, the formation fluid sample in the connecting tube 9 and the sampling tube 10 flows out from the connecting tube 58 and finally enters the sample outlet tube 56; wherein, a pressure balance tube is connected between the three-way joint 57 and the four-way joint 54, and the pressure in the two pipelines of the pressure tube 55 and the connecting tube 58 and the connected pipeline can be balanced and controlled by adjusting the valve on the pressure balance tube;

[0038] Then the ground photovoltaic panel 4 absorbs the solar energy and converts it into electrical energy and optical signals, which are stably transmitted to the control system of the flow storage tank 1 through the regulating component 3. The flow storage tank 1 accurately controls the injection or recovery of the formation interaction fluid according to the signal. When the ground photovoltaic panel 4 receives the changes in environmental parameters such as light intensity and temperature to generate signal instructions, the flow storage tank 1 responds quickly, accurately delivers or recovers fluid to the formation through the formation control pipe 6, actively regulates the state of the formation fluid, promotes full interaction between the formation and the fluid in the wellbore 2, expands the coverage of sample information, improves representativeness, and helps mining personnel accurately grasp the dynamic characteristics and distribution laws of the formation fluid.

[0039] The formation control pipe 6 connects the flow storage tank 1 and the fluid interaction string 7, and accurately controls the fluid flow, direction and pressure according to the instructions of the flow storage tank 1. It cooperates with the isolation element 8 on the inner wall of the wellbore 2 to construct an independent and stable interaction space to reduce interference from other factors in the wellbore 2. The fluid interaction string 7 is a cylindrical porous structure, and the pipe wall accurately selects fluids according to the hydrophobic and gas-philic properties. When the flow storage tank 1 injects fluid, its internal pressure increases and drives the drilling fluid to diffuse orderly through the porous pipe wall to the wall of the wellbore 2 and the target formation at a specified depth, triggering an interactive circulation of fluids in the formation-wellbore 2; when the flow storage tank 1 recovers the fluid, the pressure drop prompts the formation fluid to flow back to the string, completing the interaction process. Through periodic interaction, the samples collected in the wellbore 2 can track the dynamic changes of the formation in real time.

[0040] Among them, the adjustment component 3 can adjust the deflection angle of the ground photovoltaic panel 4, the fixed tube 31 provides a stable support structure, and the spherical connection seat 32 connects to the bottom of the ground photovoltaic panel 4, giving it flexible multi-directional rotation ability to adapt to different light directions and intensity changes. When the knob 35 is turned, the hollow threaded rod 36 rotates and drives the internal threaded ring 37 to slide upward. At this time, the internal threaded ring 37 drives the connecting rod 38 and the fixed seat 39 to move upward together, so that the fixed seat 39 can press the spherical connection seat 32 and then lock it; the fixed plate 33 can limit the rotation of the internal threaded ring 37 through the connecting rod 38, so that it can only slide in the fixed tube 31, and the support seat 34 provides stable support for the adjustment component 3;

[0041] The filter assembly 13 is used to filter the fluid sucked into the sample injection tube 11. The fluid flows in from the sample injection tube 11, first passes through the filter plate 135 for filtering, and then flows upward through the diverter plate 138. The fluid flowing upward can drive the fan blades 342 in the cleaning component 134 to rotate during the flow process, thereby causing the hollow shaft 341 to rotate. At this time, the sliding rod 344 drives the scraper 345 to rotate together with the hollow shaft 341. The scraper 345 can scrape off the impurities attached to the surface of the filter plate 135 when rotating to prevent the filter plate 135 from being blocked;

[0042] At the same time, when the fluid impacts the filter plate 135, the sliding mechanism of the sliding rod 344 relative to the hollow rotating shaft 341 allows the filter plate 135 to slide up and down along the inner side of the fixing ring 132, and forces the compression spring 343 to be compressed, thereby buffering the impact force on the filter plate 135 and extending the service life of the filter plate 135.

[0043] When the surface of the filter plate 135 is clogged, the fluid impacts the filter plate 135 and slides upward. At this time, the fluid can pass through the annular filter 136 into the space between the guide ring 133 and the shell 131, and then be ejected from the guide tube 137. At this time, the fluid ejected from the guide tube 137 just impacts the surface of the fan blade 342, which can further assist the rotation of the fan blade 342. When the filter plate 135 is clogged and the self-cleaning mechanism may be affected by the clog, the impact force of the ejected fluid is used to enhance the cleaning effect, which helps to remove impurities blocked on the filter plate 135 as soon as possible, so that the filter plate 135 can resume its normal filtering function as soon as possible, and the entire filter assembly 13 can return to an efficient and stable working state.

[0044] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An equipment for lifting samples underground based on respiration, characterized in that: include: A flow storage tank (1), wherein the top of the flow storage tank (1) is fixedly connected to an adjustment component (3), the top of the adjustment component (3) is fixedly connected to a ground photovoltaic panel (4), the bottom of the flow storage tank (1) is fixedly connected to a formation control pipe (6), the bottom of the formation control pipe (6) is fixedly connected to a fluid interaction pipe column (7), the outer wall of the formation control pipe (6) is fixedly connected to an isolation element (8), and the formation control pipe (6) passes through the inner wall of the isolation element (8), and the outer wall of the isolation element (8) is fixedly connected to a wellbore (2); A pressure supply device (5), the pressure supply device (5) is located outside the flow storage tank (1), the outside of the pressure supply device (5) is fixedly connected to a connecting pipe (9), the outside of the connecting pipe (9) is fixedly connected to a sampling pipe (10), the bottom of the sampling pipe (10) is fixedly connected to a one-way valve (12), the bottom of the one-way valve (12) is fixedly connected to a sampling pipe (11), and the bottom of the sampling pipe (11) is fixedly connected to a filter assembly (13); The pressure supply device (5) comprises a protective shell (51), a pressure delivery pipe (53) is fixedly connected to the inner side of the protective shell (51), one end of the pressure delivery pipe (53) is fixedly connected to a pressure source (52), the other end of the pressure delivery pipe (53) is fixedly connected to a four-way joint (54), one end of the four-way joint (54) away from the pressure delivery pipe (53) is fixedly connected to a control pressure pipe (55), one end of the four-way joint (54) close to the protective shell (51) is fixedly connected to a pressure relief pipe (59), the inner side of the protective shell (51) is fixedly connected to a connecting pipe (58), the outer side of the connecting pipe (58) is fixedly connected to a three-way joint (57), and the bottom end of the three-way joint (57) is fixedly connected to a sample outlet pipe (56).

2. The equipment for lifting samples based on respiration in a well according to claim 1, characterized in that: The outer wall of the injection tube (11) is fixedly connected to the inner side of the sealing element (8), and the injection tube (11) passes through the inner wall of the sealing element (8). The fluid interaction column (7) and the filter assembly (13) are both located below the sealing element (8).

3. The equipment for lifting samples based on respiration in a well according to claim 1, characterized in that: The inner side of the protective shell (51) is fixedly connected to the outer side of the control pressure tube (55), one end of the control pressure tube (55) away from the four-way joint (54) is fixedly connected to the top of the connecting tube (9), and one end of the connecting tube (58) away from the three-way joint (57) is fixedly connected to the top of the sampling tube (10).

4. The equipment for lifting samples based on respiration in a well according to claim 1, characterized in that: The adjustment assembly (3) comprises a fixed cylinder (31), the top of the inner wall of the fixed cylinder (31) is slidably connected to a spherical connection seat (32), the inner wall of the fixed cylinder (31) is fixedly connected to a fixed plate (33), the bottom of the fixed plate (33) is fixedly connected to a support seat (34), the bottom of the fixed cylinder (31) is rotatably connected to a knob (35), the top of the knob (35) is fixedly connected to a hollow threaded rod (36), the outer wall of the hollow threaded rod (36) is threadedly connected to an internal threaded ring (37), the top of the internal threaded ring (37) is fixedly connected to a connecting rod (38), and the top of the connecting rod (38) is fixedly connected to a fixed seat (39).

5. The equipment for lifting samples based on respiration in a well according to claim 4, characterized in that: The top of the spherical connecting seat (32) is fixedly connected to the bottom of the ground photovoltaic panel (4), the bottom of the supporting seat (34) is fixedly connected to the top of the flow storage tank (1), the side walls of the internal threaded ring (37) and the fixing seat (39) are both slidably connected to the inner wall of the fixing cylinder (31), and the outer wall of the connecting rod (38) is slidably connected to the inner wall of the fixing plate (33).

6. The equipment for lifting samples underground based on respiration according to claim 1, characterized in that: The filter assembly (13) comprises a shell (131), the inner wall of the shell (131) is fixedly connected to a fixing ring (132), the inner side of the fixing ring (132) is slidably connected to a filter plate (135), the top of the fixing ring (132) is fixedly connected to an annular filter screen (136), the top of the annular filter screen (136) is fixedly connected to a guide ring (133), the top of the guide ring (133) is fixedly connected to a guide pipe (137), the inner side of the guide ring (133) is fixedly connected to a diverter plate (138), and the inner side of the diverter plate (138) is rotatably connected to a cleaning component (134).

7. The equipment for lifting samples based on respiration in a well according to claim 6, characterized in that: The top of the shell (131) is fixedly connected to the bottom end of the sample injection tube (11), the inner wall of the shell (131) is fixedly connected to the side wall of the guide ring (133), the side wall of the filter plate (135) is slidably connected to the inner side of the annular filter (136), and the center of the filter plate (135) is rotatably connected to the bottom of the cleaning component (134).

8. The equipment for lifting samples underground based on respiration according to claim 6, characterized in that: The cleaning component (134) comprises a hollow rotating shaft (341), a fan blade (342) is fixedly connected to the outer side of the hollow rotating shaft (341), a compression spring (343) is fixedly connected to the inner side of the fan blade (342), a sliding rod (344) is fixedly connected to the bottom of the compression spring (343), and a scraper (345) is fixedly connected to the bottom of the sliding rod (344).

9. The equipment for lifting samples underground based on respiration according to claim 8, characterized in that: The outer side of the hollow rotating shaft (341) is rotatably connected to the center of the diverter plate (138), the outer wall of the sliding rod (344) is slidably connected to the inner wall of the hollow rotating shaft (341), the outer wall of the bottom of the sliding rod (344) is rotatably connected to the center of the filter plate (135), and the top of the scraper (345) is slidably connected to the bottom of the filter plate (135).

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