A metering device for production fluid output of oil production well
A metering device and production fluid technology, which is applied in the field of metering devices for the output of oil production wells, can solve the problems of inability to meet oilfield metering requirements for oil wells, inaccurate measurement of liquid production, and high labor intensity, and achieve compact structure. , easy maintenance, high measurement accuracy
Inactive Publication Date: 2016-02-17
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
The advantage of this technical solution is that the structure is simple and the cost is low. It can easily measure the liquid production rate of the oil well within the timing time or per unit time. The inability to measure continuously and automatically results in the problems of long measurement time and high labor intensity, so this kind of technology still cannot meet the requirements of oil well measurement in oil fields
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[0017] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail:
[0018] The present invention is a kind of measuring method of output liquid output of oil production well, and its method is: use separator 5 to carry out gas-liquid separation of output liquid, gas is separated from liquid in a large amount, can pass through tank upper exhaust pipe 2 by gas flow rate Meter 26 carries out gas metering, and liquid enters weighing tank 18 from buffer tank 23 at the bottom of separator 5 . Assuming that it is the nth weighing process, the weight of the weighing tank 18 reaches the maximum set weight G max , close the drain valve 7 of the buffer tank 23, the time is recorded as t (n) , after the buffer tank 23 drain valve 7 is closed, the weighing tank 18 is weighed, and the weight is denoted as G 1(n) , then open the weighing tank 18 drain valve 13, after the liquid is discharged, close the weighing tank 18 drain valve 13, ...
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The invention discloses a metering method and device for output liquid yield of a producing well. According to the method, gas-liquid separation is conducted on output liquid by utilizing a separator, large amount of gas is separated from liquid, the gas passes through an exhaust pipe at the upper portion of a tank and is metered through a gas flow meter, and the liquid enters a weighing tank from a buffering tank at the lower portion of the separator. The metering device is formed by assembling an upper tank body and a lower tank body, the upper tank body and the lower tank body are connected through an upper tank flange and a lower tank flange via bolts, completely sealed space is formed, and all material operation is completed in the space. Hydraulic weighing units of a hydraulic weighing part are evenly distributed on a circumferential plane in the lower tank body, and the hydraulic weighing units are communicated through hydraulic annular pipes, so that it is ensured that hydraulic oil pressure is evenly distributed. Weight of the liquid in the weighing tank can be accurately metered by converting the weight of the liquid in the weighing tank into variation of the pressure of the hydraulic weighing part. The metering device for output liquid yield of the producing well is small in size, simple in structure, high in metering precision and capable of automatically metering and continuously metering in a on-line mode.
Description
technical field [0001] The patent of the present invention relates to a method and device for measuring the output fluid of an oil production well in an oil field. Specifically, it is a tank-type device for measuring oil and associated gas after gas-liquid separation of the output fluid of an oil well. The utility model relates to a metering device for the production fluid output of an oil production well. Background technique [0002] In the production process of the oil field, the raw liquid produced from the oil well is a mixed liquid composed of crude oil, water, associated gas, etc., which can be collectively referred to as the oil well produced liquid. Before the oil well production fluid is transported to the oilfield joint station for centralized treatment, it needs to be measured according to the three-phase composition of oil, water and gas, collectively referred to as single well measurement, especially the oil production of the oil well, so as to timely Master t...
Claims
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IPC IPC(8): E21B47/00
Inventor 吕志忠钟功祥刘竞伟王文权彭岗桂
Owner SOUTHWEST PETROLEUM UNIV