136 results about "Bridge material" patented technology

A method is given for completing an interval of an open-hole injection well penetrating a subterranean formation when the interface between the wellbore and the formation includes a zone invaded by a filter cake that includes bridging materials and other embedded solid materials. The method includes the steps of injecting a clean-up fluid and contacting it with the filtercake for a period of time sufficient to loosen some of the other solids embedded in the filter cake; removing the loosened solids by a high-rate displacement fluid containing suspending additives; and then injecting a dissolving fluid containing a diverter and an effective amount of a salt or acid capable of dissolving the bridging material.

A method of treating a subterranean formation including emplacing in a wellbore a fluid, comprising an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier, at least one degradable material, and at least one bridging material, and contacting the formation with the fluid. A method and apparatus related to an invert emulsion fluid loss pill including an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier, at least one degradable material, wherein the degradable material hydrolyzes to release an organic acid, and at least one bridging material.

The invention relates to a dental composition comprising a) a hardenable compound (A1), b) a filler (B1), c) an initiator (C1) being able to initiate curing of compound (A1), compound (A1) having the structure A-(-S1-U-S2-MA)n, with A being a connector element, S1 being a spacergroup comprised of units connected with each other and comprising at least 4 units, S2 being a spacergroup comprised of units connected with each other and comprising at least 4 units, U being an urethane, an amide or an urea group connecting spacergroups S1 and S2, MA being an acrylate or methacrylate group and n being 3 to 6. The invention also relates to a process of producing this dental composition and using the dental composition e.g. as a temporary and / or long term crown and bridge material.

A method for making a semiconductor device (10) includes providing an interconnect layer (14) over an underlying layer (12), forming a first insulating layer (16) over the interconnect layer, and forming an opening (18) through the insulating layer to the interconnect layer. A first conductive layer (24) is formed over the interconnect layer and in the opening. This is performed by plating so it is selective. A second conductive layer (28) in the opening is formed by displacement by immersion. This is performed after the first conductive layer has been formed. The result is the second conductive layer is formed by a selective deposition and is effective for providing it with bridging material. A layer of bridgeable material (34) is formed over the second conductive layer and in the opening. A third conductive layer (42) is formed over the bridgeable material. The semiconductor device may be useable as a conductive bridge memory device.

A bridging material for a well treatment fluid that comprises a protein-based fibrous material and at least one additional material is provided. For example, the protein-based fibrous material can be soy protein fiber (SPF).The additional material is a lost circulation material. A process for treating a wellbore penetrating a subterranean formation with minimal or no loss of treatment fluid into the formation is also provided. A system for drilling a wellbore from the surface into a subterranean formation with minimal or no loss of drilling fluid into the formation is also provided.

The invention relates to a bridge reliability predicting method and a maintenance method of a bridge. The bridge reliability predicting method comprises the following steps: (1) monitoring the limit state of bearing capacity: (1-1) monitoring the limit state of bending bearing capacity of a mid-span front section; (1-2) monitoring the limit state of the shearing bearing capacity of a fulcrum oblique section; (2) monitoring a normal use limit state: (2-1) measuring bridge crack width; (2-2) monitoring a deflection limit state; (3) monitoring a limit state of reinforcement stress; (4) monitoring a limit state of concrete stress; (5) comparing monitoring data with preset data according to the monitoring data obtained in step (1) to step (4), thus obtaining bridge reliability. Through carrying out research on a bridge preventive maintenance model based on bridge material fatigue degradation and structure reliability decay prediction, a bridge material fatigue degradation rule and influence factors and an influence rule of the bridge structure reliability decay are explored, and a decay rule of the bridge material fatigue degradation along with time and a prediction method of the residual life of the bridge are summarized.

The invention relates to a high-water-loss curing plugging agent for plugging fissures. The high-water-loss curing plugging agent comprises the following components in parts by weight: 50-70 parts of main materials, 7-15 parts of filter aid, 10-25 parts of curing agent, 5-10 parts of fiber materials and 5-10 parts of bridging materials. The curing plugging agent has the advantages of fast plugging, good effect, high acid solubility, easiness in unplugging, low cost and less environmental pollution.

The invention provides a bridging leak-stopping agent for a fractured reservoir, and a preparation method and application thereof. The leak-stopping agent comprises a bridging material, calcium carbonate particles, asphalt powder and acid-soluble fiber, wherein the bridging material is quartz sand and / or ceramsite, and the acid-soluble fiber is one or a mixture of two or more selected from a group consisting of polyester fiber, cellulose acetate fiber II, cellulose acetate fiber III and alkali-free glass fiber. On the basis of the total weight of the leak-stopping agent, the leak-stopping agent comprises, by weight, 15 to 30% of the bridging material, 50 to 70% of calcium carbonate particles, 5 to 15% of asphalt powder and 5 to 15% of acid-soluble fiber. The bridging leak-stopping agent can block cracks with width of 1 to 5 mm and has bearing capability of 15 MPa or above and acid solubility of 70% or above; and after plugging removal through acidification, acid-insoluble rigid particles can prevent stress-sensitive damage to reservoir strata and effectively protect oil and gas reservoirs.

The invention provides a plugging agent for petroleum drilling. The plugging agent for petroleum drilling is composed of the following components: 60-80 parts of component A, namely, calcium carbonate and / or barium carbonate, 15-25 parts of component B, namely, lime powder and / or G-grade cement, and 5-15 parts of component C, namely, fibre materials, wherein preferably, the component A is particles with a particle size of 150-250 microns; the component B is powder with a particle size of greater than 0-150 microns; the length of the component C is 1-2 mm. The invention further provides preparation and application methods for the plugging agent. The plugging agent provided by the invention is simple in ingredients and preparation method, for example, the acid solubility can achieve more than 97.5%, thus facilitating acidification unplugging; the plugging agent can be independently used for plugging while drilling or matched with other bridging materials, and used in large and medium loss plugging work.

A dental composite material that comprises a polyhedral oligomeric silsesquioxane is disclosed. The dental composite material is useful for a variety of dental materials, treatments, and restorative functions including crown and bridge materials, fillings, adhesives, sealants, luting agents or cements, denture base materials, orthodontic materials and sealants, and other dental restorative materials.

The invention relates to an efficient-dehydration lost circulation additive, which comprises the following components in percentage by weight: 60%-70% of a main body material, 10%-15% of a filter aid, 3%-5% of a carbon fiber, 10%-15% of a suspending agent, 5%-8% of a bridge material and 1%-3% of a net fiber material. The raw materials are mixed evenly to form the efficient-dehydration lost circulation additive. The lost circulation additive has the characteristics of high loading capacity, good aging resistance, good plugging property and the like, can be aggravated by barite powder, and can be used for solving the problem of porous or fractured non-reservoir and reservoir losses.

The invention provides a novel method for preparing a third-level strain of pleurotus eryngii. The method combines traditional processes for a first-level strain, a second-level strain and a branched strain and is suitable for production of the pleurotus eryngii and other wood rotting edible fungus strains. The processes include inoculation from the first-level strain and the second-level strain to the three-level branched strain and then to a cultivating bag. A method for preparing the third-level strain of the pleurotus eryngii by using a poplar branch culture medium and a bridging material composed of broad-leaved wood sawdust, wheat bran and calcium carbonate is adopted. The method provided by the invention has the characteristic that branch is adopted for inoculating the third-level strain to the cultivating bag; the strain production process has the advantages of easiness for inoculation operation, high speed and low pollution rate; and the production cost is reduced and the production efficiency is improved by using the production process.

The invention relates to a waste brick recycled concrete building material and a manufacturing method thereof. The manufacturing method comprises the following steps of: as waste brick blocks or crushed brick materials obtained from engineering construction and dismounted buildings are taken as a raw material, crushing, screening, classifying, removing dust and soaking to obtain brick aggregates, and stirring the brick aggregates, sand, cement and water according to a certain proportion to obtain a suitable fully-new building material. The waste brick recycled concrete building material can be used for producing high-strength brick blocks and can be also taken as a foundation filter, a roadbed material or a landscape road bridge material so as to relieve a problem that the building material is short. The waste brick recycled concrete building material produced by the producing method disclosed by the invention has the advantages of high strength, no pollution, low cost, wide application range, good sustainability and benefits and the like, matches national requirements on energy saving, environment friendly development, low carbon and economy. Therefore, the material and the method can contribute economic construction and can also reduce consumption of natural resources.

The invention relates to a novel magnetic molecular targeted ultrasound contrast agent, in particular to a gas-wrapped magnetic liposome microsphere suspension with the mean diameter of 1-4 micrometers and a preparation method thereof. The preparation method of the magnetic molecular targeted ultrasound contrast agent microsphere comprises a condition that a lipid layer of the microsphere and / or the surface of the lipid layer contains (or connects) magnetic response materials. A contrast agent microsphere wall material contains phospholipids, polyethylene glycol (PEG), PEG phospholipid polymers, biotinylated and / or polypeptide modificatory PEG phospholipid polymer, poloxamer, ligands (monoclonal antibodies or polypeptide, and the like) and the magnetic response materials and / or avidin bridging materials, wherein the ligand (monoclonal antibodies or polypeptide, and the like) has specific affinity to target molecules, the wrapped gas is a fluorine carbon gas, and a solvent is an aqueous medium (distilled water). The invention also provides the preparation method of the magnetic molecular targeted ultrasound contrast agent microsphere, which comprises a condition that the specific ligand is connected with the microsphere in a covalence and avidin bridging way. The novel magnetic molecular targeted ultrasound contrast agent has good targeted developing effect, can be used for evaluating the change of vessel endothelial molecules of an arterious and venous system of an organic tissue and has good application prospect in treatment.

A bridge and cable harness assembly to protect bus bar apparatuses from foreign object exposure and further, electrical shorts. The assembly provides an apparatus that is configured based on the specific arrangement of the bus bar. The user determined how many bridge assemblies are necessary to protect the bus bars. The bus bars and bridges are secured to each other either by apertures in bus bars that accepts protrusions of bridges which are heat staked, or where the bus bars are overmolded into the insulative bridge material. Screws are used to make a final assembly into the board-mounted connectors.

A dental composite material that comprises a polyhedral oligomeric silsesquioxane is disclosed. The dental composite material is useful for a variety of dental materials, treatments, and restorative functions including crown and bridge materials, fillings, adhesives, sealants, luting agents or cements, denture base materials, orthodontic materials and sealants, and other dental restorative materials.

The invention discloses a method for cultivating a corn allopolyploid by using an unreduced gamete characteristic of tripsacum dactyloides, belonging to the field of corn distance hybridization. The method comprises the steps of: hybridizing an MTF-1 (metal-responsive transcription factor) as a female parent with corn or tetraploid perennation corn as a male parent, and then selecting a filial generation plant which is capable of overwintering, namely a new corn allopolyploid, wherein the tiller number of the filial generation plant is more than 15 and the chromosome number of the filial generation plant is a sum of the chromosome number of a female parent and the chromosome number of the male parent. According to the method provided by the invention, the dysgenesis of corn affinis species is overcome and a good inheritance basis is provided for breeding ground-breaking corn species by using the bred corn allopolyploid as a bridge material transfer character. In addition, the method provided by the invention provides a model to breed allopolyploids of other species. The corn allopolyploid bred by the method provided by the invention is perennial, adopts vegetative propagation, and provides a material to corn allopolyploid origin and evolution research and allopolyploid breeding. The method provided by the invention is simple, is short in time, high in efficiency and small in workload.

A modular elongated stent having an overlap region where two modular components fit together, the overlap region being relatively stiff as compared to another more flexible region of the stent when the stent is in an assembled configuration, the stent further comprising a mimic region that has a stiffness essentially equivalent to the stiffness of the overlap region, to provide kink resistance. A stent having such a mimic region or otherwise stiff region and a flexible region may have a transition region between the stiff and flexible regions, such as a bridging material attached to the stent, also to provide kink resistance. A stent may have relatively stiff regions and relatively flexible regions positioned to align the flexible regions with curved regions of a body lumen when deployed within the body lumen. The stiffness of the stiff, flexible, and transition regions may be controlled by attaching material to the stent, varying the cross-sectional area of the stent components, varying the metallurgical properties thereof, and / or by varying the stent architecture. Methods for providing kink resistance by controlling stent stiffness are also disclosed. A stent having regions of different metallurgical properties is also disclosed, as are methods for creating such a stent.

The invention discloses a material feeder suitable for easily-bridged materials, which comprises a shell, wherein a storage bin is connected onto the shell; the bottom part of the storage pin is provided with a stirrer; the stirrer is formed by a stirring shaft and a cutting device on the stirring shaft; the cutting device is in a protruded column type, a shaftless spiral type, a fin type or a rotary plow type; the shell is internally provided with a helical blade shaft which is connected to a spiral driving device; the spiral driving device is connected with a stirrer through a stirrer actuating device; the stirrer can be connected with an independent stirrer driving device; and the feeder can be a screw feeder, a double helix feeder, a belt feeder, a scraper feeder or a screw pump. According to the invention, the materials are forcedly scattered in the storage bin, so that the bridging and blocking phenomena of the materials can not easily occur, and thus the normal and stable operation of the feeder is ensured.

The invention relates to a pressure-bearing lost circulation additive for a drilling fluid and for stably bearing pressure on a smooth fracture leakage wall surface. The lost circulation additive is composed of 10%-20% of damping material, 45%-50% of bridging material and 35%-40% of filling material by weight, wherein the damping material is an industrial metal screen, having the size of the damping material is 1.0*1.0mm to 3.0*3.0 mm and the thickness of the damping material is about 0.5 mm; the bridging material is calcium carbonate particles, and the standard mesh number of the screening mesh product of the bridging material is lower than 20 meshes; the filling material is a mixture composed of calcium carbonate powder and flexible graphite powder; the calcium carbonate powder is further divided into three grades to realize multi-grade filling and to form a compact shielding layer; and the mesh number of the flexible graphite is greater than 150, and the anti-pressure ability of a bridge plug section is improved. With the pressure-bearing lost circulation additive for the drilling fluid and for stably bearing pressure on the smooth fracture leakage wall surface disclosed by the invention, leak stoppage success rate and bearing pressure for smooth fracture leakage can be improved, leakage stoppage failure due to complexity is reduced, the benefits of exploring and developing a bored well are improved; and the preparation process of the lost circulation additive is simple and convenient, the source of the materials of the lost circulation additive is broad, and the lost circulation additive is easy to spread and apply.

The invention relates to a 3D NAND storage device and a formation method thereof. According to the formation method of the 3D NAND storage device, a bridge material layer having a gate isolation groove etching window is formed, a sacrifice layer is removed during the gate isolation groove formation process and after formation of the gate isolation groove, a control gate and an array common sourcepole are formed, a plurality of bridge structures bridge the gate isolation groove, side walls of two sides of the gate isolation groove can be supported by the bridge structures, the side walls of the two sides of the gate isolation groove are prevented from being deformed or from inclining, so that the stability of a characteristic size of the formed gate isolation groove is ensured, and the performance of the 3D NAND is improved.

The invention discloses a method for cultivating an aneuploid perennial forage grass variety by using a corn heterologous polyploidy and belongs to the field of corn distant hybridization. According to the method, MTF-1 (Tripsazea creammaize T.2n=76) cultivated by Sichuan Agricultural University is used as a female parent and teosinte is used as a male parent to be hybridized; a filial generation is selected from perennials, a wintering habit, a tiller number, a chromosome number and chromosome constitution to select the perennial heterologous aneuploid forage grass variety. According to the method, firstly, a heterologous aneuploid is used as the forage grass variety to be applied so as to creatively expand an application range of corn affinis species and explore a novel way for utilizing corn affinis specie materials; secondly, a material cultivated by the method is used as a bridge material and has a very great application value; furthermore, a vegetative propagation manner can be used for fixing a hybrid vigor and the variety is perennial, so that the production cost is very low, the yield and the nutritive value are high, and the economic benefit is great.

A conveying system for conveying a conveyable material from a hopper where the system includes a fluid port located below the hopper outlet and in a vertical flow path into hopper outlet that can be momentarily opened for an on the go release of a charge of compressed air directly upward into the hopper outlet and into the underside of the bridge in the hopper to either disintegrate or unlock the bridged particles from each other thereby causing the bridged material to fall into the hopper outlet and into the conveying system where the material can be transported to a remote location or to remove any material that may be adhering to the wall during an emptying phase.

Methods and apparatuses are provided for testing and quantifying structural durability characteristics of bridging materials. Embodiments include sieving bridging materials to create uniform batches having particles within a predefined range. Embodiments further include selecting a batch and drying the batch, separating the dried batch into dry samples, and selecting a test sample having an initial mass. Embodiments include sealing the test sample, a volume of liquid, and a rod in a cylindrical testing cell and rotating the cylindrical testing cell containing the rod such that the rod rolls in relation to an inner wall of the cylindrical testing cell and applies force partially crushing the test sample. Embodiments further include sieving a resulting sample to create a durable sample having particles within the predefined range and drying the durable sample. Embodiments of methods further include measuring a mass of the dried durable sample to define a durable mass and comparing the durable mass to the initial mass.

A conveying system for conveying a conveyable material from a hopper where the system includes a fluid port located below the hopper outlet and in a vertical flow path into hopper outlet that can be momentarily opened for an on the go release of a charge of compressed air directly upward into the hopper outlet and into the underside of the bridge in the hopper to either disintegrate or unlock the bridged particles from each other thereby causing the bridged material to fall into the hopper outlet and into the conveying system where the material can be transported to a remote location or to remove any material that may be adhering to the wall during an emptying phase.

The invention discloses a simple detection method for the crack growth rate of cold-drawing high-strength steel wires, and relates to the field of bridge material detection. The detection method is combined with the relevant fracture mechanics theory for evaluating the residual service lives of cable ropes for bridges and prestress steel wires. The simple detection method for the crack growth rate of the cold-drawing high-strength steel wires is characterized by comprising the following steps: implementing fatigue loading on precracked cold-drawing high-strength steel wire test specimens until the steel wires are fractured, then measuring stripes formed by the fatigue loading on a fracture surface, drawing a crack growth rate-stress intensity factor range curve on a bilogarithmic diagram, and fitting a calculated curve by adopting a least square method, thereby obtaining Paris formula curve fitting parameters C and m of the cold-drawing high-strength steel wires, and calculating the crack growth rate of the cold drawing high-strength steel wires under any given crack length a and stress amplitude delta Sigma according to a Paris formula. The detection method provided by the invention is used for providing the technical support for the fatigue service life of the cold drawing high-strength steel wires.

The invention discloses an air-purifying and fresh-air system of a building door window. The air-purifying and fresh-air system at least comprises a left air passage, a right air passage and a fresh air purifying window sill structure, wherein the left air passage and the right air passage are installed on the two side walls of a door window hole, and the fresh air purifying window sill structure is installed at the lower portion of the door window hole. The fresh air purifying window sill structure is mainly composed of a window sill structure body and a fresh air and air purifying cavity structure, wherein the window sill structure body is arranged on the outdoor side, an outer air inlet passage is formed in the middle of the window sill structure body, the fresh air and air purifying cavity structure is arranged on the indoor side, and an inner air inlet passage is formed in the middle of the fresh air and air purifying cavity structure. The fresh air and air purifying cavity structure is connected with the window sill structure body on the outdoor side through broken bridge materials into a whole, and the inner air inlet passage and the outer air inlet passage are communicated with the fresh air and air purifying cavity structure. The air-purifying and fresh-air system has the advantages that the structure is reasonable and compact, use is convenient and reliable, fresh air can be led into the system, air purifying can be achieved, pollution of harmful substances in the air to living space can be prevented, and meanwhile effective circulating between indoor air and outdoor air can be guaranteed.

The invention discloses a drilling fluid bridging particle, a preparation method thereof, and a drilling fluid plugging agent, and belongs to the technical field of oil field leak stopping. The drilling fluid bridging particle comprises, by weight, 40 to 60% of sand, and 40 to 60% of a filling material, wherein the particle size of the sand ranges from 0.1 to 0.25mm, the filling material comprisesa rigid material and a deformable material at a mass ratio of 1: (0.8-1.2). In well drilling process at desert regions, the drilling fluid bridging particle is capable of forming stable plugging layers rapidly, the properties are stable, well shaft loss problem is solved, and at the same time, the main particle bridging material in the drilling fluid bridging particle can be obtained from local sources, transportation cost is reduced effectively, and construction personnel safety is ensured.