36results about How to "Mining went well" patented technology

The invention provides a device for exploiting seafloor natural gas hydrates through continuously injecting hot seawater. The device comprises a plurality of water supply pipes (1), a plurality of heat radiation pipes (3) and at least one water outlet pipe (2), wherein the inlet end of each water supply pipe (1) is arranged at the offshore plane; the position of the inlet end of each water supply pipe (1) is higher than the sea level; the heat radiation pipes (3) are of cobweb type or hexagonal reticular or branch type or annular structures and are distributed at a seafloor hydrate layer (6); the outlet end of the water outlet pipe (2) is arranged at the offshore plane; the outlet end of the water outlet pipe (2) is flush with or below the water inlet ends of the water supply pipes (1); and the plurality of water supply pipes (1), the plurality of heat radiation pipes (3) and the at least one water outlet pipe (2) are sequentially connected to form a communicator. The hydrostatic transformation principle of the communicator is sufficiently utilized; high-temperature seawater at the sea surface layer is continuously pumped through the heat radiation pipes laid in the seafloor hydrate layer only by a low-power centrifugal pump in an ordinary model. Heat radiation pipelines are of reticular structures, so that the heat radiation efficiency can be improved; the heat radiation area is expanded; and the exploitation efficiency is improved.

The invention particularly provides a coal mine downhole country rock slight shock detection method, and solves the problem that no method for monitoring slight shock under the geological conditions of a hard top bottom plate and a hard coal bed exists. The coal mine downhole country rock slight shock detection method includes steps as follows: erecting equipment used for monitoring, collecting data, summarizing, analyzing and monitoring in real time, analyzing abnormal parameter conditions, and early warning possible rock burst times and positions. The method not only can solve the difficulty in rock bursts during coal mining and ensure the success and safe process of mining, but also has positive and effective directive function in the rock burst prevention work during the mining process in future.

The invention provides an intelligent sensing and remote and unified regulating system for deep-mining mine ventilation. The intelligent sensing and remote and unified regulating system is mainly composed of intelligent sensing equipment, a PLC control cabinet (3), a middle-layer optical fiber ring network (18), a ring network exchanger (17) and an industrial personal computer (19). The PLC control cabinet (3) is provided with an analog input terminal (4), a frequency converter (12), an analog input module (13), a communication module (14) and a CPU module (15), wherein the analog input terminal (4) is connected with the intelligent sensing equipment through a cable, the frequency converter (12) is connected with a ventilation motor (2) and can automatically acquire operation parameters of the motor, and then the frequency converter is communicated with the industrial personal computer (19) of an upper-layer monitoring terminal through the CPU module, the communication module, the analog input module, the middle-layer optical fiber ring network and the ring network exchanger. The intelligent sensing and remote and unified regulating system is strong in expansibility and improves the unified regulating efficiency and the real-time controlling and optimizing capacity to multiple fans in deep-mining mines.

A thermally dissolving method for selectively mining useful potassium chloride and part of magnesium chloride from potassium salt mine by use of shaft, 4 pipes and liquid bed layer includes such steps as arranging the halogen mining pipe, dissolving liquid pipe and heating pipe in shaft, filling anti-emulsifying agent to form a liquid bed layer in salt stratum, and filling the dissolving liquid while filling steam to dissolve the useful ore. Its apparatus is also disclosed.

The invention relates to the technical field of auxiliaries for oil-gas exploration drilling in oil fields, in particular to an acid soluble mineral fiber fine bridging agent, a bridging fluid and a preparation method thereof.In raw materials of the acid soluble mineral fiber fine bridging agent, the particle size of limestone is 0.045mm-2.5mm, the particle size of mica is 1.4mm-2.5mm, and the particle size of vermiculite is 0.3mm-2.0mm. After the acid soluble mineral fiber fine bridging agent is added into plugging slurry under conditions of deep wells, ultradeep wells, high temperature, high density and high pressure, normal fluidity of drilling fluid can be kept; due to high acid solubility, when strong acid is injected for oil-gas exploitation after leakage stoppage, the acid soluble mineral fiber fine bridging agent is dissolved, so that pollution-free smooth oil-gas exploitation is guaranteed; the bridging fluid obtained by adoption of the acid soluble mineral fiber fine bridging agent is applicable to various leakage layers and excellent in leakage stopping effect.

The invention relates to the technical field of auxiliaries for oil-gas exploration drilling in oil fields, in particular to an acid soluble mineral fiber medium-coarse bridging agent, a bridging fluid and a preparation method thereof. In raw materials of the acid soluble mineral fiber medium-coarse bridging agent, the particle size of limestone is 2.5mm-4.2mm, the particle size of mica is 2.5mm-4.2mm, and the particle size of vermiculite is 2.0mm-4.0mm. After the acid soluble mineral fiber medium-coarse bridging agent is added into plugging slurry under conditions of deep wells, ultradeep wells, high temperature, high density and high pressure, normal fluidity of drilling fluid can be kept; due to high acid solubility, when strong acid is injected for oil-gas exploitation after leakage stoppage, the acid soluble mineral fiber medium-coarse bridging agent is dissolved, so that pollution-free smooth oil-gas exploitation is guaranteed; the bridging fluid obtained by adoption of the acid soluble mineral fiber medium-coarse bridging agent is applicable to various leakage layers and excellent in leakage stopping effect.

The invention relates to a low-level multi-step crossing hole gas extraction method for coal interbedding coal seams. The low-level multi-step crossing hole gas extraction method is characterized in that transporting crossheadings (or air return crossheadings) are dug in the mined coal seams (1), a 0.3-1 m of inclined dip (3) penetrating into bottommost rock strata (2) of all coal interbeddings isconstructed obliquely downwards along the left (right) side of a roadway, a low-level drilling field (4) is dug, wherein the product of the length, the width and the height of the low-level drillingfield (4) is equal to 3.0 m*2.5 m*2 m, a plurality of low-level multi-step crossing holes (5) penetrating through the multiple coal seams to a mined bed are constructed in the low-level drilling fieldin the roadway tunneling direction obliquely upwards, multi-step sleeves (6-1), (6-2) and (6-3) are inserted into the low-level multi-step crossing holes (5), the sleeve (6-1) is connected with a multi-way part through a phi 120 mm of rubber hose (11), and the sleeve (6-1) is connected with a gas extraction pipeline (12) in the roadway to converge for low-level multi-step crossing hole (5) networking gas extraction operation. Gas at coal seam bottom plates is effectively extracted, the safe and efficient effects are achieved, and the low-level multi-step crossing hole gas extraction method can be used for implementation of outburst prevention measures of a working surface.

The invention discloses a method for scraping a crude oil channel wall wax layer. The method comprises a step A: a winch is fixed beside an oil well, a fixed wheel is fixed above an oil well inlet, one end of a steel wire rope is connected to the winch, and the other end of the steel wire rope bypasses the fixed wheel and then is connected with one end of a connecting shaft; a step B: the winch is started, and the steel wire rope is lengthened; and a driving device I and a driving device II are started. A wax removal assembly comprises the connecting shaft, a supporting plate, a scraper assembly, the driving device I, the driving device II and an installation barrel arranged on the connecting shaft in a sleeved mode. The scraper assembly comprises a supporting shaft and a supporting barrel. The side wall of the supporting barrel is provided with a scraper, the scraper is rotated through components such as a lifting device to remove wax on the oil well wall, and negative conditions such as reduction of a crude oil channel, oil pressure rise and oil pipe blockage are avoided, to ensure that crude oil circulates normally and the crude oil is exploited smoothly.

The invention discloses a device for preventing a crude oil channel in an oil well from being narrowed. The device for preventing the crude oil channel in the oil well from being narrowed comprises a suspending device and a wax removing assembly which are connected in sequence, the wax removing assembly comprises a connecting shaft, a support plate, a scraping knife assembly first driving device, a second driving device and a mounting cylinder, the connecting shaft is connected with the support plate, and the first driving device can rotate around an axial line of the connecting shaft; the scraping knife assembly comprises a support shaft and a support cylinder, one end of the support shaft is connected with the mounting cylinder, the other end of the support shaft penetrates through the support cylinder to be connected with the mounting cylinder, and the second driving device drives the support cylinder to rotate; the side wall of the support cylinder is provided with several scraping knifes. The suspending device puts the wax removing assemblies into the oil well which needs wax removal, then the first driving device and the second driving device are started to make the scraping knife remove wax on the wall of the oil well, which further avoids the generation of negative conditions that a crude oil flow channel is reduced, the oil pressure is increased, and an oil pipe is clogged to guarantee normal flow of crude oil and successful proceeding of crude oil exploitation.

The invention discloses an oil well wax removal device for petroleum drilling. The oil well wax removal device comprises a hanging device and a wax removing device which are sequentially connected. The hanging device drives the wax removing device to perpendicularly move. The wax removing device comprises a connecting shaft, a supporting plate, a scraper assembly and a driving device. One end of the connecting shaft is connected with the hanging device, and the other end of the connecting shaft is connected with the supporting plate. The driving device is located on the upper surface of the supporting plate and connected with the scraper assembly. The driving device drives the scraper assembly to rotate around the axis of the connecting shaft. By putting the wax removing assembly into an oil well where wax needs to be removed through the hanging device and then starting the driving device, scraper blades in the scraper assembly scrape away wax on the wall of the oil well, then the negative situations that a crude oil flowing channel is reduced, oil pressure is raised and oil pipes are blocked are avoided, and normal crude oil flowing and smooth crude oil production are ensured.

The invention relates to the technical field of mining, in particular to a method for using a tailings mold bag wall to fill an ore pillar recovery under a pit, which uses the tailings mold bag wall to fill the ore pillar recovery under the pit, wherein the tailings mold bag wall ore pillar recovery is the method of improving benefits that successfully stopes a reserved high-grade ore pillar by using mineral waste tailings filling mold bags and through forming a top-down processing tailings mold bag wall supporting ore bodies. In implementation, drawing materials is easy and the limitations are limited. The purpose of not only using the tailings and reducing the tailings storage but also saving soil, stopping remaining the ore pillar and increasing profits can be achieved.

The invention relates to a coal mining system and discloses a panel / tape zone coal pillar integrated coal mining system. The panel / tape zone coal pillar integrated coal mining system solves the problem that the existing roadway layout system has large coal pillar recovery difficulty. The panel / tape zone coal pillar integrated coal mining system is realized by A, setting a roadway protection coal pillar having width of 100m at the outer side of the original ventilation roadway and setting a roadway protection coal pillar having width of 20m at the outer side of the original transport roadway, B, arranging a stope face through normal mining processes and arranging a coal pillar recovery roadway in the roadway protection coal pillar outside the ventilation roadway, and C, after the stope face is completely exploited, arranging a coal pillar recovery work surface with width of 140m through the original ventilation roadway, the original rail roadway, the original transport roadway and the coal pillar recovery roadway, and recovering coal pillars between the transport roadway and the coal pillar recovery roadway through the combined mining technology. The panel / tape zone coal pillar integrated coal mining system is suitable for coal mining.

The invention discloses a device for processing hole spraying during water jet coal seam gap cutting. The device comprises a hole sealing device, a hole sealing capsule wrapping the periphery of the hole sealing device and a buffer sealing device with an inner cavity. A gap which can be filled with water is arranged between the hole sealing capsule and the outer wall of the hole sealing device. One end of the buffer sealing device is connected with the hole sealing device, and the other end thereof is provided with a sealing block which can be opened towards two sides. Sealing rubber matched with a drill stem is arranged in the sealing block. A first gas hose for discharging gas is arranged at the upper end of the buffer sealing device. A gas, water and slag separating tank is connected to the lower end of the buffer sealing device through a thick hose. The device has the advantages that during high-pressure water jet gap cutting permeability increasing, the device can effectively collect coal slag, gas and waste water sprayed from drilled holes when hole spraying occurs, the collected coal slag, gas and waste water are separated through the separating tank, gas concentration in a roadway is reduced, and life safety of workers and smooth coal mining are guaranteed; the device is simple in structure, light, simple to operate and worthy of application.

The invention provides a method for exploiting a sulfur-containing gas reservoir of carbonate rocks and relates to the technical field of exploiting of the sulfur-containing gas reservoir. According to the exploiting method, a dynamic distribution curve of sulfur deposition saturability of the sulfur-containing gas reservoir is predicted firstly, and the sulfur-containing gas reservoir is exploited according to the dynamic distribution curve of sulfur deposition saturability. The technical problem that shutdown often happens in the actual exploiting process of the sulfur-containing gas reservoir due to the fact that the sulfur solubility is difficult to calculate and sulfur deposition in the exploiting process cannot be reflected really when the sulfur-containing gas reservoir is exploitedis solved with the exploiting method, and the purpose that smooth exploiting of the sulfur-containing gas reservoir can be effectively guaranteed is achieved.

The invention relates to a deep sea pressure balancer. The pressure balancer comprises a multi-stage turbofan, a lotus cylinder, reversing blades and a balancing weight. The output end of the multi-stage turbofan is fixedly connected with the lotus cylinder, and the multi-stage turbofan is used for enabling seawater to uniformly flow out to the reversing blades through the lotus cylinder; the output end of the lotus cylinder is fixedly connected with the reversing blades, and the reversing blades are used for enabling the seawater to flow out at an angle with the axial direction; and the bottom ends of the reversing blades are fixedly connected with the balancing weight, and gaps exist between the reversing blades and the balancing weight. According to the deep sea pressure balancer, negative pressure can be formed below a combustible ice pressure balancer, the effect of reducing the pressure intensity of an exploiting area is achieved, and therefore combustible ice can be exploited smoothly to solve the energy development problem in China.

The invention discloses a system and method for detecting the complex operation condition of a scraper conveyer. Inertial measuring units, an RFID emitting device, a data receiving device with the WIFI function and a data processing device are adopted; the inertial measuring units are arranged on a scraper plate of the scraper conveyer, and by measuring the acceleration values and angular velocity values of the scraper plate, data can be transmitted to the data processing device to be analyzed and processed through a WiFi module ultimately; and according to the change condition of the measured acceleration values and angular velocity values in the X axis, Y axis and Z axis of the scraper plate, the current operation condition of the scraper plate of the scraper conveyer can be obtained. The operation condition of the scraper plate of the scraper conveyer includes S bend, stop / start, the impact time by external force, the impact point by external force, the impact direction by external force and chain scission. The working condition of the scraper conveyer and the operation condition of the scraper plate can be analyzed. If severe working conditions occur in the operation process of the scraper conveyer through analysis, workers can be informed to take measures as quickly as possible so that operation stability of the scraper conveyer can be maintained.

The invention relates to a method for treating the strata above an underground gasification channel and a method for building an underground gasification furnace. The above processing method includes: establishing a passage in the rock formation above the underground gasification passage and / or in the aquifer above the rock formation; injecting a reinforcement agent into the passage when a passage is established in the rock formation, so that the reinforcement agent is in the passage and its surroundings. Solidification in the rock formation; when a channel is established in the aquifer, an expanding material is injected into the channel so that the expanding material absorbs the water contained in the aquifer surrounding the channel. The method for building an underground gasification furnace includes: strengthening the rock formation and / or absorbing water in the aquifer according to the above-mentioned treatment method; establishing an inlet well, a horizontal passage and a gas outlet well, wherein the horizontal passage is located in the reinforced rock formation or the aquifer in which the water content has been reduced in the coal seam below. During the underground gasification process, it can ensure that the rock formation above the gasification channel is firm and / or prevent the water contained in the aquifer from entering the combustion zone, thereby improving the service life of the underground gasification furnace.

The invention relates to a locking mechanism for an underwater high-pressure wellhead. The locking mechanism is used for locking a casing hanger and a wellhead, and comprises a locking main body, a support connecting ring and a driving mandrel, wherein the locking main body is provided with an anti-rotation component matched with the casing hanger; one end of the support connecting ring is connected with the locking main body; and the driving mandrel is connected with the other end of the support connecting ring, the driving mandrel is sleeved with a wellhead locking ring, and the driving mandrel drives the wellhead locking ring to lock the driving mandrel and the wellhead. According to the locking mechanism of the underwater high-pressure wellhead, double locking between the casing hanger and the wellhead is achieved, so that the casing hanger is not prone to axial movement under the action of annular pressure, and smooth oil and gas exploitation is guaranteed.

The invention relates to the technical field of mining, in particular to a method for using a tailings mold bag wall to fill an ore pillar recovery under a pit, which uses the tailings mold bag wall to fill the ore pillar recovery under the pit, wherein the tailings mold bag wall ore pillar recovery is the method of improving benefits that successfully stopes a reserved high-grade ore pillar by using mineral waste tailings filling mold bags and through forming a top-down processing tailings mold bag wall supporting ore bodies. In implementation, drawing materials is easy and the limitations are limited. The purpose of not only using the tailings and reducing the tailings storage but also saving soil, stopping remaining the ore pillar and increasing profits can be achieved.

The invention discloses a wax removal method for a crude oil well. The wax removal method comprises the following steps of (A) fixing a winch next to the oil well, fixing a fixed wheel at the upper part of an oil well inlet, connecting one end of a wire rope and the winch, and connecting the other end of the wire rope and one end of a connection shaft after bypassing the fixed wheel; (B) starting the winch, lengthening the wire rope to make a wax removal assembly fall off along the diameter of the oil well, simultaneously starting a drive device, making a scraper assembly rotate around the connection shaft, and scraping a wax layer on the well wall; and (C) starting the winch, shortening the wire rope, and making the wax removal assembly drop out of the oil well. The wax removal assembly is put into the oil well requiring wax removal through the devices, such as the winch, and the wax on the wall of the oil well is scraped by a scraper blade in the scraper assembly, so that the negative conditions, such as crude oil circulation channel reduction, oil pressure rise and oil pipe blockage, are avoided to ensure smooth normal crude oil circulation and crude oil exploitation.

The invention provides an intelligent sensing and remote and unified regulating system for deep-mining mine ventilation. The intelligent sensing and remote and unified regulating system is mainly composed of intelligent sensing equipment, a PLC control cabinet (3), a middle-layer optical fiber ring network (18), a ring network exchanger (17) and an industrial personal computer (19). The PLC control cabinet (3) is provided with an analog input terminal (4), a frequency converter (12), an analog input module (13), a communication module (14) and a CPU module (15), wherein the analog input terminal (4) is connected with the intelligent sensing equipment through a cable, the frequency converter (12) is connected with a ventilation motor (2) and can automatically acquire operation parameters of the motor, and then the frequency converter is communicated with the industrial personal computer (19) of an upper-layer monitoring terminal through the CPU module, the communication module, the analog input module, the middle-layer optical fiber ring network and the ring network exchanger. The intelligent sensing and remote and unified regulating system is strong in expansibility and improves the unified regulating efficiency and the real-time controlling and optimizing capacity to multiple fans in deep-mining mines.

The invention discloses mining supporting support equipment which comprises a middle hydraulic support device and end hydraulic support devices, wherein the middle hydraulic support device is used for supporting a mining working surface top plate, the end hydraulic support devices are located in troughs in two ends of a mining roadway and used for supporting the ends of a trough plate, the end hydraulic support devices are arranged at two ends of the middle hydraulic support devices respectively, a transition hydraulic support device is arranged between the end hydraulic support device at each end and the middle hydraulic support device, height of the middle hydraulic support device supporting top end of the middle hydraulic support device, the transition hydraulic support device supporting top end of the transition hydraulic support device and the end hydraulic support device supporting top ends of the end hydraulic support devices can be adjusted in the vertical direction, and the middle hydraulic support device supporting top end and the end hydraulic support device supporting top ends are arranged in flush. The invention further discloses a mining method used for the mining supporting support equipment to mine trough top coal in a fully mechanized coal mining face.

The present invention relates to a low-level multi-stage perforated drilling method for gas drainage in coal-rock interbedded coal seams. (Right) A 0.3-1m slope downhill (3) penetrating into the bottom rock layer (2) of all coal-rock interbeds (2) is constructed on the side of the slope, and a length × width × height = 3.0m × 2.5m × 2m low-level drilling site (4), in which several low-level multi-stage through-layer drilling holes (5) are constructed obliquely upward along the roadway excavation direction to the mining layer, and inserted into multiple Step bushings (6‑1), (6‑2), (6‑3), use Ф120mm rubber hose (11) to connect the bushings (6‑1) with multi-pass, and connect with the gas pump in the roadway The mining pipelines (12) are connected and converged, and the low-level multi-stage cross-layer drilling (5) is connected to the gas extraction operation. The invention effectively drains the coal seam floor gas, is safe and efficient, and can be used for the implementation of outburst prevention measures on the working face.

The invention relates to the technical field of auxiliaries for oil-gas exploration drilling in oil fields, in particular to an acid soluble mineral fiber fine bridging agent, a bridging fluid and a preparation method thereof.In raw materials of the acid soluble mineral fiber fine bridging agent, the particle size of limestone is 0.045mm-2.5mm, the particle size of mica is 1.4mm-2.5mm, and the particle size of vermiculite is 0.3mm-2.0mm. After the acid soluble mineral fiber fine bridging agent is added into plugging slurry under conditions of deep wells, ultradeep wells, high temperature, high density and high pressure, normal fluidity of drilling fluid can be kept; due to high acid solubility, when strong acid is injected for oil-gas exploitation after leakage stoppage, the acid soluble mineral fiber fine bridging agent is dissolved, so that pollution-free smooth oil-gas exploitation is guaranteed; the bridging fluid obtained by adoption of the acid soluble mineral fiber fine bridging agent is applicable to various leakage layers and excellent in leakage stopping effect.

The invention relates to a rotational flow paraffin removal device. A reversing flow guider is further arranged in the inlet end of a rotational flow shell, a water blending pipe is arranged at the center of the reversing flow guider, the part, located at the inlet end of the rotational flow shell, of the water blending pipe extends outwards in the circumferential direction to form a shoulder, and a plurality of small holes are formed in the shoulder in the transverse direction; a water blending inlet is formed in the side wall of the rotational flow shell, a through hole is further formed in the shoulder of the reversing flow guider in the longitudinal direction, one end of the through hole is communicated with the water blending inlet, and the other end of the through hole is communicated with the water blending pipe of the reversing flow guider; a water blending helix efficient hydrocyclone is installed in the water blending pipe, an inlet helix efficient hydrocyclone is installed in the space between the water blending pipe and the rotational flow shell, multiple circular rotational flow channels are formed in the outer wall of the water blending helix efficient hydrocyclone, and multiple circular rotational flow channels are formed in the outer wall of the inlet helix efficient hydrocyclone. The rotational flow paraffin removal device solves the problems that in the past, the cooling speed of blended cold water is low, water blending push rotating force is small, rotation intensity of collected liquid from a wellhead is small, and paraffin removal cost is excessively high.

The invention relates to a scale inhibitor of oilfield reinjection water and a preparation method of the scale inhibitor and belongs to the technical field of petroleum additives. The scale inhibitor of the oilfield reinjection water comprises the following ingredients in parts by weight: 1-2 parts of spora lygodii, 0.5-3 parts of pluchea indica, 1-2 parts of poloxamer, 2-4 parts of povidone, 0.5-1 part of chlorobutanol, 8-12 parts of bis-trifluoromethane sulfonimide, 3-6 parts of nicotinic acid, 4-6 parts of sodium citrate, 20-30 parts of alcohol and 50-65 parts of water. The preparation method is simple and wide in raw material source, the scale inhibitor has outstanding scale inhibition performance and corrosion inhibition performance, with the adoption of the scale inhibitor, corrosion of an oilfield water injection system can be effectively avoided and inhibited, smooth crude oil exploitation is ensured, the working efficiency is improved, and the scale inhibitor is easy to popularize and apply.