210results about How to "Increase the exposed area" patented technology

The invention discloses a method for extracting gas from high gas low permeability coal seam by punching, slotting, pressure releasing and permeability increasing, comprising the following steps: whena drill is drilled into a predetermined position of the coal seam, coal bodies at both sides of a drill hole are cut in the drill hole by high pressure water jet with a certain pressure and flow; a flat slot is formed at both sides of the drill hole; the cut coal bodies is led out the hole by the high pressure water jet. The exposed area of the coal body at the slotted part in the drill hole aregreatly increased, namely that an extremely thin protective layer is exploited with local scope of the flat slot, which enlarges effective influential range of pressure releasing, permeability increasing and gas discharging of the coal bodies in the drill hole, thus the air permeability of the coal bodies is increased about 200-300 times, the average amount of single-hole gas extraction reaches 0.3m<3>/min, the concentration of the gas extraction is 30-60%, gas drainage rate of working face of coal extraction is more than 50%, the number of drill holes for gas drainage is reduced by 10-20% after slotting, pressure releasing and permeability increasing. The method realizes the safety, high efficiency and uniform extraction of the gas from the high gas low permeability outburst coal seam, and changes high gas coal seam with outburst danger into low gas coal seam without outburst danger.

A mobile phone of a folding type is disclosed. The mobile phone of a folding type according to an exemplary embodiment of the present invention may include: a first body provided with a first display portion; and a second body rotatably connected to the first body through at least one of a first hinge module and provided with a second display portion, wherein the first and second display portions form the same plane and are configured such that at least one of the first and second display portions can slide toward the other of the first and second display portions in a case that the first and second bodies are open.

The invention discloses a high-pressure gas injection hole-drilling pressure-releasing outburst prevention method which comprises the steps of: firstly, carrying out common drilling operation in a bottom plate stone drift (2) of a coal bed (1) in front of a coal mining or driving face; after a drill hole (3) enters a design depth of the coal bed, drawing back a drill, sending a jet nozzle (4) anda high-pressure drill rod (5) connected with the jet nozzle into the drill hole, and connecting a high-pressure gas-storing device (6) connected with the tail of the high-pressure drill rod (5) with a high-pressure gas compressing device (7) through a high-pressure tube; starting the high-pressure gas compressing device (7), carrying out near cylinder rotary impacting, cutting and holing on the hole wall of the drill hole in the coal bed (1) by using high-pressure impact wave as a power source through the jet nozzle (4) capable of jetting high-pressure airflow and automatically rotating to ensure that the coal body around the drill hole (3) is gradually crushed and separated from the hole wall to form pressure releasing space and subjected to the pressure balanced permeability increase through ground pressure and gas pressure action. According to the invention, the drainage efficiency of the gas in the coal bed is greatly improved and the outburst damage of the coal bed is reduced.

A package of the present invention has a laminate structure formed by laminating a plurality of ceramic layers, and has a mount surface to be a joint surface when mounted on a mother board, defined parallel with the laminating direction. A first ceramic layer has a recess with an L-shaped cross section across the mount surface and a side surface, defined at each end thereof in a direction perpendicular to the laminating direction, and an external electrode formed on each recess, the external electrode having a surface thereof exposed to the mount surface.

The invention relates to a herringbone branch well drilling method, belonging to the side drilling horizontal well method, wherein said invention can improve the yield; and the invention comprises: first drilling the first branch well eye; then inserting the first branch well tube post; when the main well eye drills to the second branch position, drilling into the second branch well eye, until completing all branch well eyes, then drilling into the main well eye and inserting the complete well sleeve. The invention can avoid reducing the size of main well eye, while the branch well is the same as main well eye; and the number of drilled branch wells is not limited, to increase the oil yield.

The invention relates to a method for extracting coal bed methane through down-hole bedding long borehole consecutive cave building and a hydraulic mechanical drill with the diameter changed and enlarged while drilling. A coal bed bedding long borehole is combined with a cave building technology, and the permeability of low-permeable coal reservoirs and the coal bed borehole extraction capacity are improved. A hole is opened at 1/3 coal thickness or 1.5m upwards away from the coal heading floor on the extracting drill site coal wall of an underground coal mine along with the coal bed, the hydraulic mechanical drill with the diameter changed and enlarged while drilling performs cave building on the borehole from inside to outside successively after the borehole reaches the preset depth, and the cave diameters and distances can be calculated through formulas. Coal bed stresses around the cave are released and coal bed prior cracks are widened and lengthened after the caves are completed, tensional and shear failures occur to the coal bed, novel cracks are produced, and accordingly, the coal bed crack connectivity is increased, the permeability is improved, the coal bed methane can be depressurized and desorbed rapidly, the coal bed methane extracting efficiency is improved dramatically, and the coal bed methane extracting time is shortened.

The secondary battery of the present invention accommodates in an outer housing an electrode body in which a positive electrode member, separator member, and negative electrode member are laminated in this order. The secondary battery is characterized by the positive electrode member and the negative electrode member each being formed from a collector and an active material layer formed so as to cover one end on the collector. The secondary battery is further characterized by an insulating body in which the insulating material does not exhibit adhesiveness at normal temperatures being applied with an adhesive force of 1 N/15 mm or greater onto the collector constituted of the positive electrode member or negative electrode member, and the peripheral edge of the positive electrode member or negative electrode member having a cross-sectional surface containing the collector and insulating body. In addition, the thermal adhesive insulating film for a secondary battery of the present invention is characterized by having a base material layer formed from a polyolefin and an adhesive layer formed from a polyolefin modified using unsaturated carboxylic acid or a derivative thereof. A secondary battery, a method for manufacturing the same, and a thermal adhesive insulating film for a secondary battery that prevent swelling and peeling of the electrode parts and effectively prevent mixing in of foreign matter inside the battery are provided.

A simple fuel cell-type electrochemical sensor for sensing the concentration of a specific fuel, e.g., methanol, ethanol, formic acid, sodium borohydride, etc., prepared in an aqueous solution is developed. The sensor is mainly composed of a membrane electrode assembly (MEA), which is made by hot pressing a piece of electro catalytic anode and a piece of electro catalytic cathode on each side of a proton exchange membrane (PEM), such as Nafion® 117. It is uniquely designed to have an anode size much smaller than that of the cathode and utilizes ambient air as an oxidant. The innovative approach is to ensure the fuel diffused to the anode/membrane interface can be totally reacted so as to eliminate the interferences of fuel crossover and enhance output signal. Thus, the measured sensor current reflects the concentration of diffusion-limited fuel at the membrane/electrode interface, which is proportional to fuel concentration in the bulk. It can be easily operated in a passive mode as well as in an active mode with aqueous fuel solution under a stagnant or a flowing condition. The applications include uses in fuel cell systems, such as direct methanol fuel cell systems, for sensing and monitoring fuel concentration in an aqueous solution.

The invention relates to an electrolyte for a lithium-sulfur battery containing a sulfide solubilizer. The electrolyte mainly comprises an electrolyte salt and an organic solvent, wherein the organic solvent comprises an ether organic solvent and the sulfide solubilizer. The invention discloses a determination method for the solubility of the sulfide in the organic solvent. The invention further discloses a composition method of the sulfide solubilizer. The invention provides the lithium-sulfur battery containing the electrolyte; a negative active material is a lithium metal or a lithium-containing alloy, a positive electrode is formed by alloying and ball-milling of the positive active material, a conductive agent and an adhesive at the ratio, and a positive active material is element sulfur or a sulfur-containing compound. The product provided by the invention has the advantages of being available in raw materials, simple in process and the like, and the rate capability of the lithium-sulfur battery can be improved.

The invention provides a display panel and display device. The display panel includes a display area and a bonding area connected to the display area; the bonding area includes a substrate layer set,first metal layers formed on the substrate layer set, passivation layers formed on the first metal layers, second metal layers formed on the passivation layers, and protective layers formed on the second metal layers; the second metal layers are electrically connected to the first metal layers through the contact holes in the passivation layers; the protective layers have multiple through holes; and the parts of the second metal layers corresponding to the through holes are exposed to form multiple contact electrodes. Through the large area etching on first organic layers, third connection electrodes can have larger bare areas, and therefore, bonding areas can be enlarged, the number of ACF particles can be increased, bonding resistance can be reduced, and the yield rate of bonding can beimproved.

Disclosed is a multilayer capacitor capable of improving reliability and further reducing ESL. In a width direction, a second principal-surface electrode portion is greater than a first principal-surface electrode portion, and a fifth principal-surface electrode portion is greater than a fourth principal-surface electrode portion. When viewed from a lamination direction, an outer edge of the second principal-surface electrode portion at the other end side is arranged near the other end side more than outer edge of the fifth principal-surface electrode portion at one end side. First lead portions are connected to the second principal-surface electrode portion, and second lead portions are connected to the fifth principal-surface electrode portion. Thus, portions of the second principal-surface electrode portion greater than the first principal-surface electrode portion and portions of the fifth principal-surface electrode portion greater than the fourth principal-surface electrode portion function as current paths between the first lead portions and the second lead portions. Therefore, the current paths are shortened.

A baby-care implement comprises a hood which covers a top of a seat thereof. The hood comprises a mounting base fixed to a body of the baby-care implement, a first hood bone whose lower end is turnably connected to the mounting base, a second hood bone positioned on the inner side of the first hood bone, whose lower end is turnably connected to the mounting base, a third hood bone positioned on the inner side of the second hood bone, a first hood sheet mounted on the first hood bone and extending backward and forward, and a second hood sheet mounted on the second hood bone, overlapping the inner side of the first hood sheet and extending backward and forward. The second hood sheet comprises one end in the back-and-forth direction which is separated from the first hood sheet and the other end which is connected to the first hood sheet.

A method for combining integrated drilling, flushing and slotting with thermal injection to enhance coalbed gas extraction, applicable to managing gas extraction from microporous, low-permeability, high-adsorption coalbed areas. A gas extraction borehole is drilled within a certain distance of a predetermined drilling, flushing and slotting borehole, and, once sealed, is used for gas extraction. An integrated drilling, flushing and slotting drill bit is used to sink the borehole, which is then sealed. Concentration variation in the gas extraction borehole is monitored in real time, and when concentration is below 30%, borehole is opened and high-temperature steam is injected by means of a steam generator, after which the borehole is again closed. Drilling a drilling, flushing and slotting borehole increases pressure relief space and the surface of exposed coal, relieves stress on the coal body, and increases gas permeability of the coalbed, while the injection of high-temperature steam promotes gas desorption in the coal body, promotes crack propagation around the borehole, and increases channels for gas flow, thus achieving highly efficient extraction of gas from the coalbed.

The invention provides a method and an application of the secondary fracturing of a compact oil and gas reservoir. The invention is mainly applied to the secondary fracturing field of shale gas and shale oil reservoirs. The method comprises the steps of injecting micro-nano-sized and energy-contained blasting material particles in the graded manner on the basis of primary hydraulic fracturing, transmitting blasting material particles to the wall surface of a primary fracture, and realizing the secondary fracturing by using the pulse current detonation mode. According to the method, a dense seam network capable of communicating matrix pores with one another can be formed. Based on the dense seam network, the exposed area of the pore walls of matrix pores is greatly increased. The total discharge area of an oil-gas desorption and migration pathway is increased and the recovery efficiency is further improved. Selectable energy-contained materials are rich in variety, wherein the materialregulation and material combination are carried out through the physical and chemical means. A secondary fracturing scheme is designed according to the characteristics of different reservoir lithology, physical properties and the like. Adopted energy-contained blasting materials can be compounded with high-strength and micro-size propping agents, and the injection of a fracturing agent and a propping agent can be realized at one time. The invention provides a new idea for further improving the shale gas and shale oil yield.

The invention discloses a steam-flooding well network structure for an extra-heavy oil reservoir and an oil extraction method. The well network structure comprises a herringbone horizontal well, at least one straight well and layered steam injection mechanisms. The herringbone horizontal well comprises a vertical section, a horizontal section communicating with the lower end of the vertical section and located on the lower portion of an interlayer, and a plurality of branch sections; one ends of the branch sections communicate with the horizontal section, and the other end of at least one of the branch sections is located above the interlayer; sectioned plugging devices are arranged in the positions, in the interlayer, of the branch sections; the herringbone horizontal well serves as an oil extraction well; the straight wells are arranged close to the horizontal section, serve as steam injection wells and are provided with at least two perforations located on the upper portion and thelower portion of the interlayer correspondingly; and the layered steam injection mechanisms are arranged in the straight wells and enable the perforations to be opened in a perforated mode. Accordingto the steam-flooding well network structure for the extra-heavy oil reservoir and the oil extraction method, the influence of formation heterogeneity on the production effect is avoided, the oil extraction speed and the crude oil recovery ratio are increased, and comprehensive benefits of heavy oil extraction are improved further.

The invention belongs to the technical field of underground engineering plugging, and particularly discloses a device and a method for multi-stage plugging of surrounding rock fissure water by utilizing slurry and microbial mineralization. According to the device, microbial dry powder is activated and then induced to generate calcium carbonate deposition with cementing property so as to plug rock stratum fissures, the flow of the fissure water is controlled, and the stability of surrounding rock is enhanced. The device is composed of annular waterproof curtain plugging and key hole grouting plugging, wherein annular waterproof curtains are circularly and uniformly distributed on the periphery of key holes, the flow speed and the flow of the fissure water are reduced by injecting cement-water glass slurry into annular grouting holes, and primary plugging of centimeter-level surrounding rock fissures is carried out; and the key hole grouting plugging adopts coarse aggregate and microbial-induced calcium carbonate precipitation to carry out secondary plugging on millimeter-level fissures in the surrounding rock fissures, the microbial dry powder is activated and then induces the calcium carbonate precipitation to plug micron-level fissures in the surrounding rock so as to carry out third-level plugging, and the plugging effect of the surrounding rock fissures and the curing effect of the surrounding rock are enhanced step by step.

A blank having a defined pattern of reduced strength, allowing separation along said defined pattern, the pattern defining a video cassette box from a single sheet having first and second face portions, one or more side flaps for forming a parallelepiped, one or more reinforcing tabs for increasing the durability of the box and one or more top tabs for forming an enclosure at one end of the box.

The invention discloses a hydraulic cutting device and a hydraulic cutting method for drilling through a bed. The hydraulic cutting device for drilling through the bed comprises a water tank, a water inlet pipe, a water pump, a water outlet pipe, a rotating water tail, a drilling machine, a drilling rod and a hydraulic cutting drill; one end of the water inlet pipe extends into the water tank, and the other end of the water inlet pipe is connected with a water inlet of the water pump; one end of the water outlet pipe is connected with a water outlet of the water pump, the other end of the water outlet pipe is connected with one end of the drilling rod through the rotating water tail, the other end of the drilling rod is connected with the hydraulic cutting drill, and the drilling rod is arranged on the drilling machine and is driven by the drilling machine to rotate; and a pressure gage is arranged on the water outlet pipe, and a pressure regulating valve is arranged on the water outlet pipe between the pressure gage and the water outlet of the water pump. The hydraulic cutting device for drilling through the bed has the advantages that a drilling coal section is reamed by using the cutting action of high pressure water jet, the area of a coal body exposed in the hole is increased, a fracture is manufactured, the gas permeability of the coal bed is improved, so that the gas extraction effect is improved.