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457 results about "Production pipeline" patented technology

Early monitoring device and method for hydrate blockage of deep water gas well production pipeline

The invention relates to an early monitoring device for hydrate blockage of a deep water gas well production pipeline. The early monitoring device comprises a data collecting and transmitting system, a data analyzing and processing system and an automatic hydrate inhibitor injection system. The data collecting and transmitting system monitors temperature and pressure data in the production pipeline in real time and transmits the monitoring data to the data analyzing and processing system. The data analyzing and processing system stores, analyzes and processes the monitoring data, calculates and analyzes the natural gas hydrate blockage condition in the production pipeline and sends out an early warning signal and a hydrate inhibitor injection instruction. The automatic hydrate inhibitor injection system is arranged on a platform and injects hydrate inhibitor into the production pipeline according to the instruction sent by the data analyzing and processing system. By means of the early monitoring device, early monitoring can be achieved for the hydrate blockage position and the blockage severity degree in the production pipeline, sufficient time is provided for field workers to take the hydrate inhibitor injection measure, and more serious blockage conditions are avoided.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Polyimide fiber and preparation method thereof

The invention relates to a polyimide fiber. The polyimide fiber has a molecular structure general formula shown in the specifications, wherein -Q1- is an aromatic binary primary amine residue without a phenolic hydroxyl group; =Ar= is an aromatic binary anhydride residue; and -Q2- is a phenolic hydroxyl group-containing linker of aromatic binary primary amine. The preparation of the polyimide fiber comprises the following steps of: firstly, stirring the aromatic binary primary amine and aromatic binary anhydride in an organic solvent system at room temperature and reacting for 2 to 4 hours toobtain homogeneous, transparent and viscous polyamic acid solution; secondly, pouring the solution into a spinning machine, performing screw extrusion, forming the fiber by using a spinneret and a coagulating bath, drawing and winding to obtain an as-spun fiber; and finally, treating the as-spun fiber at a high temperature to obtain the polyimide fiber. The polyimide fiber has high resistance to high temperature and high mechanical property; and the preparation process has the advantages of no need of special production equipment, capability of producing on the conventional polyimide resin production line and the spinning machine, easy recycling of an organic solvent, environmental friendliness and suitability for industrial production.
Owner:DONGHUA UNIV +1

System and method for monitoring sand production rate of oil-gas well

The invention relates to a system and a method for monitoring the sand production rate of an oil-gas well. The system comprises a high-frequency signal sensing device and a control device, wherein the high-frequency signal sensing device comprises an oil stream introducing pipeline and an oil stream returning pipeline which are arranged in parallel on an oil-gas production pipeline of the oil-gaswell; the oil stream introducing pipeline is provided with a fixed displacement pump; the oil stream returning pipeline is provided with a pressure sensor; an oil stream monitoring pipeline is arranged between the oil stream introducing pipeline and the oil stream returning pipeline; a signal sensing drum is arranged between the oil stream monitoring pipeline and the oil stream returning pipelineand bonded with a high-frequency signal sensor; the control device comprises a data acquisition system which acquires pressure and impact signals monitored by the pressure sensor and the high-frequency signal sensor, transmits the acquired signals to a filter amplifier for filtering and signal amplifying and transmits the filtered and amplified signals to a signal processing unit; and the signal processing unit analyzes and judges the impact signals monitored by the high-frequency signal sensor so as to monitor the sand production rate of oil-gas stream in real time. The system and the methodare suitable for the field of oil-gas well development engineering.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Physical simulation device and simulation method for coal bed methane production

The invention relates to a physical simulation device and a simulation method for coal bed methane production. In the process of production simulation of the current production experiment well and numerical simulation, the cost is high and the accuracy of the numerical simulation can not be ensured. In the physical simulation device and the simulation method for coal bed methane production of the invention, the device comprises sample bins, a thermostatic water bath system, a gas/water metering system and a pressure monitoring system, wherein the sample bins are mutually connected through gas/water configuration production pipelines to form a simulation system; the thermostatic water bath system is arranged around the simulation system; the sample bins of the simulation system are all connected with confining pressure simulation pipelines; the pressure monitoring system is arranged on the gas/water configuration production pipelines at the ends of the sample chambers; simulation well mouths are connected with the gas/water configuration production pipelines at the tail ends of the simulation system; and the simulation well mouths are connected with the gas/water metering system. Through the device and simulation method of the invention, the gas filling, water injection and production states are simulated, thereby optimizing the gas well production working system, reducing the cost, and simultaneously ensuring safe high-efficiency exploitation of the coal bed methane.
Owner:煤炭科学研究总院有限公司西安研究院

Method for producing liquid milk product containing fruit-vegetable granules

The invention relates to a method for producing a liquid milk product containing fruit-vegetable granules, wherein the compositions of raw materials of the liquid milk product comprises milk, fruit-vegetable granule material liquid, a stabilizer and water. The production method comprises the following: 1) a step of preparing a base material, which is to mix the milk, the stabilizer and the water well, homogenize the mixture and obtain the base material; 2) a step of adding the fruit-vegetable granules, which is to convey the fruit-vegetable granule material liquid to a production pipeline, mix the fruit-vegetable granule material liquid with the base material on line, obtain mixed material liquid and convey the mixed material liquid to a sterilization machine for sterilization; and 3) a step of canning the material liquid, which is to can the sterilized mixed material liquid and obtain the liquid milk product. The production method does not need to temporarily store or delay storing the material liquid and does not need agitation, thereby reducing the destruction of the fruit-vegetable granules which is caused by mechanical agitation, protecting the shape and size of the fruit-vegetable granules from destruction and reducing the broken rate of the fruit-vegetable granules. In addition, as the liquid milk product is uniform in the content of the fruit-vegetable granules in every unit package and good in taste, the method improves product quality.
Owner:INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD

Low-permeability gas field gathering and transmitting system and gathering and transmitting method thereof

The invention relates to a low-permeability gas field gathering and transmitting system and a gathering and transmitting method of the low-permeability gas field gathering and transmitting system. The low-permeability gas field gathering and transmitting system comprises a plurality of gas gathering stations, a plurality of well clusters and a processing factory, wherein the well clusters are communicated with the gas gathering stations through independent gas production pipelines, the gas gathering stations are communicated to the processing factory sequentially through gas gathering branch lines and a gas gathering main line, and a gas gathering system is arranged in the gas gathering stations and sequentially comprises a plurality of gas gathering station inlet pipelines, a plurality of separators, a compressor and a gas gathering station outlet pipeline. According to the low-permeability gas field gathering and transmitting system and the gathering and transmitting method of the low-permeability gas field gathering and transmitting system, high-pressure production is performed while the transmitting and processing requirement is met at the early stage of the well clusters, pressure energy and temperature energy at the early stage of a gas well are fully utilized, the pipe diameter of a pipeline and the injection amount of hydrate inhibitors are reduced, low-pressure production is performed at the middle-later stage, concentrated pressurization is performed on the gas gathering stations, concentrated processing is performed in the processing factory, gas field development ground investment and running cost are reduced, and construction of a gas gathering pipe network is more reasonable.
Owner:XIAN CHANGQING TECH ENG

Preparation method of modified phenolic foam composite insulation board

The invention discloses a preparation method of modified phenolic foam composite insulation board. In the method, water resistance and flame resistance polymer cement sheet is prepared in advance andthe method is characterized in that a phenolic foaming machine continuous production line is adopted to foam the foaming raw material to modified phenolic foam composite insulation sheet while the water resistance and flame resistance polymer cement sheet is combined to the both sides of the modified phenolic foam composite insulation sheet. The foaming raw material comprises the following raw materials by weight percent: 60-80% of phenolic resin, 3-6% of foaming agent, 3-7% of polyurethane modifier, 12-32% of catalyst and 1-3% of foam stabilizer. The composite board prepared in the inventionhas excellent flame resistance and good water resistance and heat preservation effect; in addition, the insulation core material has high strength and toughness and does not drop residue so as to completely meet the national requirements of building engineering in energy-saving, water resistance, heat preservation, flame resistance and the like and be widely used for the large area heat preservation, flame resistance and water resistance inside and outside the external walls of building.
Owner:夏良强
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