Analysis of Field Application Effect of Flow Metering Table of Water Injection Well in Oilfield

Abstract: The analysis information of the field application effect of the flow meter of the oilfield water injection well is provided by the excellent flow meter and flow meter production and quotation manufacturers. Abstract: This paper analyzes the current situation of water injection well flowmeters in the casing damage area of ​​oilfields, introduces the working principles of four kinds of flowmeters, and through the tracking and comparison of the application of 34 water injection well flowmeters, discusses the negative The reason for the deviation, the machine. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the article on the field application effect analysis of flowmeters in oilfield water injection wells. This paper analyzes the current situation of water injection well flowmeters in the casing damage area of ​​oilfields, introduces the working principles of four kinds of flowmeters, and through the tracking and comparison of the application of 34 water injection well flowmeters, discusses the negative deviation of high-pressure dry water meters. The reason, the advantages and disadvantages of the combination of mechanical transmission and electronic technology, the application status of the vortex flowmeter, and the idea that the vortex flowmeter completely replaces the high-pressure dry water meter is proposed, which has a certain guiding role in avoiding the influence of the instrument error on oilfield water injection and improving the water injection quality. . Keywords: water injection well, flowmeter, effect 1 The working principle and characteristics of several flowmeters 1.1 Ordinary high pressure dry water meter. The high-pressure dry-type water meter of the water injection well basically adopts the angle-connected type, and a small amount is a high-pressure vortex flowmeter. The working principle is that the impeller rotates through the kinetic energy of the liquid, and the rotation of the impeller drives the magnetic coupling to rotate, so that the magnetic steel generates a rotating magnetic field, and the rotating magnetic field drives the magnetic sheet to rotate to make it count. The rotational speed of the impeller can be regarded as proportional to the flow rate within the flow range. 1.2LGZ series intelligent digital water meter. On the basis of the ordinary high-pressure dry-type water injection meter, the bearing material is improved, the wear resistance of the graphite bushing is improved, and the electronic display head is adopted, which overcomes the wear and aging of the ordinary high-pressure dry-type water meter counter. With the disadvantage of instantaneous water volume. Using the principle of electromagnetic induction, the rotation speed of the water meter core impeller is converted into an electrical signal, which is processed into a microcomputer, and the accumulated and instantaneous flow is displayed after calculation. 1.3LSH series electronic water meter. LSH series electronic water meters are speed-type flow meters, which use the principle that the angular velocity of the impeller is proportional to the flow rate. The rotation of the impeller transmits the magnetic force to the magnetic sensor on the upper side of the diaphragm through the annular magnetic steel on the upper end of the impeller shaft. CMOS integrated circuit display, showing cumulative flow and instantaneous flow respectively. 1.4LUB series vortex flowmeter. LUB series vortex flowmeter can be divided into ordinary type and Venturi type. It is designed according to the theory of Karman and Strohal vortex generation and its relationship with flow rate. The working principle is that when the fluid flows through the vortex generator set in the flow field at a certain flow rate, a pair of alternating and neatly arranged vortex streets are generated downstream of the cylinder, first on one side of the cylinder, and then on the other side of the cylinder. produced on the other side. It is obtained that the frequency of generating the vortex street is proportional to the flow velocity of the fluid: f=StV/d. f—Vortex separation frequency; V—Fluid flow rate; St—Sterhal constant; d—The width of the column's oncoming surface. By measuring the separation frequency of the vortex, the fluid velocity V can be obtained, and the flow rate can be obtained. The flowmeter tube has no moving parts, wide flow range, small pressure loss, good stability, internal battery power supply, power-off protection function, easy installation, low maintenance rate, good linearity and so on. 2 Field application and result analysis 2.1 Current situation of water injection well flowmeter. In March 2010, the water injection meters of 34 water injection wells were replaced at the same time, including 2 high-pressure vortex flow meters produced by Wenzhou Ouhai Automation Instrument Factory, 4 LGZ series intelligent digital display high-pressure water meters produced by Anhui Jinda Instrument and Equipment, Wenzhou Jingjing Petrochemical Instrument Factory has 2 LSH series electronic water meters and 26 ordinary high-pressure dry water meters. 2.2 In September 2010, the verification of water injection meters of 34 water injection wells. In September 2010, in order to check the working condition of the flowmeter, 34 pieces of flowmeters were sent to the Metrology Bureau for verification. According to the verification standard, the water injection meter was verified at three flow points of nominal flow, boundary flow and minimum flow, according to the indicated value of the qualified table. Error standard, the nominal flow is (15m3/h)±2%, boundary flow (4.5m3/h)±3%, minimum flow (1.2m3/h)±5%. The verification results are: 26 high-pressure dry water meters, 12 qualified and 14 unqualified, with a pass rate of 46%, 8 tested water meters, 8 verified, 8 qualified, and a pass rate of 100%. 2.3 Analysis of the first verification results. 2.3.1 Reasons for the negative deviation of ordinary high-pressure dry water meters. ①The pressure of the water injection well is relatively high during the injection process. Generally, the pump pressure is about 14MPa, and the oil pressure is about 12MPa. When the pressure fluctuates, the vibration is large, which makes the counter and the magnetic steel gap. The magnetic steel cannot be fully contacted, resulting in the phenomenon of lost rotation and negative deviation. This situation is relatively common. ②The plastic impeller and the central shaft of the high-pressure dry water meter rotate at a high speed. Because the plastic impeller is easy to wear, it affects the normal rotation of the impeller, resulting in eccentric wear, which causes the impeller to issue a card and cause water to not rotate. It is found that there are 4 pieces with high dosage. The phenomenon of card issuance of well water meters appears negative deviation. ③ Serious corrosion increases the gap between the impeller and the copper casing.

We are a performance driven culture that uses mass flow meter to ensure continuous improvement.

If you are thinking of having a , then you must be first clear about the purpose, which is driving you to buy this device. Beijing Sincerity Automatic Equipment Co., Ltd offer quality for your needs with complete assurance of ability to serve your purpose.

People are more likely to listen to an expert than just anyone off the street. So, while pack mentality is important, having a relevant expert speak to the effectiveness of a brand's product as Sincerity is essential to converting new consumers as well.

Beijing Sincerity Automatic Equipment Co., Ltd quickly recognized the power of efficient manufacturing and started proactively recruiting people to sell products.