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

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 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 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 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 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 discloses an ore mining structure and method under the condition of an extremely broken ore body, which are used for a mining area crossed with the trend of the extremely broken ore body, and comprise a false roof drift which is positioned above the extremely broken ore body and is arranged along the horizontal direction, and an upper ore body and a lower ore body which are respectively arranged on the upper side and the lower side of the false roof drift, an artificial false roadway is arranged in the area, located over the extremely broken ore body, of the false roof drift, an artificial false roof is arranged in the artificial false roadway, and the artificial false roof comprises a supporting structure arranged at the top end and the inner circumferential wall of the artificial false roadway, a reinforcing mesh arranged at the bottom end of the artificial false roadway and a filling body filled in the artificial false roadway. By means of the mode, the artificial roof is arranged above the extremely-broken ore body, the two supporting systems of the supporting structure and the reinforcing mesh are arranged at the artificial roof, the good supporting effect on ore rocks on the upper layer of the artificial roof can be achieved, and smooth mining of the extremely-broken ore body below the artificial roof is guaranteed.