48results about How to "Conducive to on-site promotion and application" patented technology

The invention provides a mounting method and device with acoustic emission sensor recycling capacity. The method comprises the following steps: a, an acoustic emission sensor is fixed in a cavity of a recovery device by a fixing claw; b, the recovery device is mounted in a drill hole, and the front end of a waveguide rod arranged in the recovery device extends deeply into a coal-rock mass body in front of the hole bottom; and c, after monitoring, the sensor is taken out from the rear end of the cavity of the recovery device, and sensor recovery is finished. The specially designed acoustic emission sensor recovery device is used for fixing the sensor in the wall of the drill hole of the mine coal-rock mass body, the mounting method and device are applied to inside of drill holes with any angles in the coal-rock mass bodies with different hardness, can effectively solve the problems that the sensor is difficult to mount and is not mounted in place in depth due to hole collapse and the problems about recycling and the like, and has the advantages that the reliability is high, the signal monitoring precision is increased, noise interference is isolated, mounting is convenient and fast, the sensor can be recycled and the like; and further, the operation difficulty and economic cost are reduced, the mounting efficiency is increased, a better application effect is obtained, and field popularization and application are facilitated.

The invention belongs to the technical field of tertiary oil production, and particularly relates to a heavy oil well single-well throughput oil production method. The method concretely comprises the following steps of test oil well screening, single-well throughput process selection, and field test. The single-well throughput process is selected by aiming at the characteristics of a heavy oil well; and the oil-water mobility ratio is well reduced, so that the single-well yield of the heavy oil well can be effectively improved. Meanwhile, the heavy oil well single-well throughput oil production method has the characteristics of simple process, high operability and long validity period. Therefore the method can be widely applied to the field test for improving the single-well yield of the heavy oil well.

The invention belongs to the technical field of tertiary oil recovery, and particularly relates to a method for increasing the crude oil recovery rate through indigenous microbial drive. The method specifically comprises the following steps that oil reservoirs are screened; high-permeability oil layers, middle-permeability oil layers and low-permeability oil layers are determined; activating agent systems are determined; field injection processes are determined; and field tests are conducted. Different activating agent systems and field injection processes are selected according to the oil layers with different permeability of the target oil reservoirs, indigenous microorganisms of different oil layers are well activated, and therefore the field test effect of the indigenous microbial drive oil reservoirs can be effectively improved. Meanwhile, the method has the characteristics of being simple in process and high in pertinence and operability. Accordingly, the method can be widely applied to the technical field of microbial enhanced oil recovery.

The invention belongs to the technical field of tertiary oil recovery, and particularly relates to a method for improving the yield of a low-permeability heavy oil well. Specifically, the method comprises the following steps of screening of the oil well, fracture of the oil well, single-well throughput treatment of the oil well, and treatment of a shaft of the oil well. The method has the characteristics of being simple in process and high in operability, and is beneficial for field application and popularization. The method is high in pertinence, a series of technical measures can be selected in a targeted mode according to the characteristics of the low-permeability heavy oil well, accordingly, the yield of the oil well can be greatly improved, the period of validity of the oil well can be greatly prolonged, the oil increase amount of the single well is higher than 1000 tons, the period of validity is longer than 3 years, and the input-output ratio is 1:5. Thus, the method can be widely applied to field tests for yield improvement of the low-permeability heavy oil well.

The invention belongs to the technical field of tertiary oil recovery, and specifically relates to a method for microbial single well treatment of heavy oil wells. The method specifically includes the following steps: screening of heavy oil wells; single well huff and puff treatment of heavy oil wells; Evaluation. According to the characteristics of heavy oil wells, the present invention selects the comprehensive process of huff and puff and wellbore treatment, which can significantly reduce the oil-water mobility ratio in the oil layer of heavy oil wells and significantly improve the flow performance of wellbore crude oil, thereby greatly increasing the production of heavy oil wells; at the same time, the invention It has the characteristics of simple process, strong operability, long validity period and high input-output ratio. Therefore, the present invention can be widely applied in the field test of increasing single well production of heavy oil wells.

The invention discloses a prefabricated type moulding bed and a construction method thereof, and relates to the technical field of building construction. The prefabricated type moulding bed comprisesa bearing table moulding bed and a beam moulding bed in the bearing table moulding bed; the bearing table moulding bed comprises a set of bearing table templates; first joints are arranged at one endsof the bearing table templates; second joints are arranged at the other ends of the bearing table templates; the adjacent bearing table templates define a closed pouring space through cooperation ofthe first joints and the second joints; a pouring connection opening is formed in the middle of each bearing table template; the first joints are symmetrically arranged on two sides of each pouring connection opening; the beam moulding bed comprises a pair of beam templates; and second joints are arranged at the two ends of the beam templates. The prefabricated type moulding bed and the construction method thereof have the beneficial effects that factory prefabrication is achieved and promotes the building industrial development advantageously, the process is simple, the construction progressis accelerated advantageously, and mechanical production ensures the project quality advantageously.

The invention belongs to the technical field of tertiary oil recovery and particularly relates to a method for improving the oil recovery efficiency of medium and high-permeability reservoirs. The method specifically comprises the following steps of screening of oil reservoirs, determination of a polymer injection well and a surfactant injection well in a target oil reservoir, the polymer injection stage, the surfactant injection stage, the normal water injection stage and the field test effect evaluation stage. The method has the characteristics that the investment cost is low and the oil recovery efficiency is improved greatly through field tests. The field tests improve the oil recovery efficiency by more than 15%. The input-output ratio is greater than 1:5. The method has the characteristics of being simple in process and high in pertinence and operability. Thus, the method can be widely applied to the field tests for improving the oil recovery efficiency of the medium and high-permeability reservoirs.

The invention belongs to the technical field of tertiary oil recovery, and particularly relates to a composite huff-puff oil production method for a high-temperature high-salinity high-wax-content oil well. The method specifically comprises the following steps of screening of the tested oil well, selection of a single well huff-puff process, and field test. The method has the characteristics of being simple in process, pertinent and long in validity period; and meanwhile, the method can effectively control wax deposition of the high-temperature high-salinity oil well and has the oil production increasing effect. Accordingly, the method can be widely applied to wax removal and prevention and single well stimulation processes of wax-containing oil wells.

The invention belongs to the technical field of tertiary oil recovery, and particularly relates to a technology for increasing yield of a low-permeability heavy oil well. The technology specifically comprises the following steps: screening the oil well; fracturing the oil well; treating single well huff and puff of the oil well; and treating a shaft of the oil well. The technology has the features of simplicity and high operability, and facilitates field popularization and application; and the technology is high in pertinency, a series of technology measures are selected in a targeted manner according to the features of the low-permeability heavy oil well, therefore, the yield of the oil well can be greatly improved, the period of validity of the oil well can be greatly prolonged, single well oil increment is greater than 1,000 t, the period of validity is longer than 3 years, and the input-output ratio is greater than 1:5. Therefore, the technology can be widely used in a field test for increasing the yield of the low-permeability heavy oil well.

The invention belongs to the technical field of tertiary oil recovery, and particularly relates to a method for increasing the yield of middle and high permeability oil reservoirs. The method specifically comprises the following steps of screening of the oil reservoirs, determination of polymer injection wells and surfactant injection wells of the target oil reservoirs, the injection stage of polymer, the injection stage of a surfactant, the water normal injection stage and the field test effect evaluation stage. The method has the characteristics of being low in investment cost and high in field test recovery rate increase degree, the field test recovery rate is increased by 15% or more, and the input-output ratio is greater than 1:5. The method has the characteristics of being simple in process and high in pertinence and operability. Accordingly, the method can be widely applied to field tests for increasing the yield of the middle and high permeability oil reservoirs.

A bus protection method for CTs connected at two sides of a bus-tie switch comprises a protection device for more than two sections of buses. The protection device acquires all bus voltages, all branch current and knife switch positions on a bus and CT current and switch positions at the two sides of the bus-tie switch; the protection device automatically calculates bus protection three-phase voltage, large-difference current and small-difference current of each section of bus, calculates bus tie interval differential current of the bus-tie switch itself and current of the CTs at two sides ofthe bus tie, judges whether the bus tie CTs have a line-breaking fault or not and selects a faulty bus or a bus to trip when fault occurs; and meanwhile, a bus tie interval differential protection logic is newly added, the difference current of CTs at the two sides of the bus-tie switch and the current magnitude of the CTs at the two sides of the bus-tie switch are calculated, and the bus-tie switch or the bus is selected to trip according to the bus voltage opening condition, the bus-tie switch difference current and the current magnitude at the two sides. The method is simple and reliable, and improves quickness and accuracy of protection and cutting during bus dead zone fault.