Internal flow type four-electrode electromagnetic flow instrument system for horizontal well
A technology of electromagnetic flow and electromagnetic flowmeter, which is applied in the application of electromagnetic flowmeter to detect fluid flow, volume/mass flow generated by electromagnetic effect, instruments, etc., and can solve the problem of inability to measure downhole fluid.
Pending Publication Date: 2020-10-23
PETROCHINA CO LTD +1
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[0004] The present invention provides an internal flow four-electrode electromagnetic flow instrument system for horizontal wells to overcome the defect in the prior art that horizontal wells cannot effectively measure downhole fluids due to the use of a single electromagnetic flowmeter
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[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0030] Such as figure 1 As shown, the present invention provides an inflow type four-electrode electromagnetic flow instrument system applied to horizontal wells, comprising an electromagnetic flowmeter main body 6, a first electromagnetic flow sensor 4, a signal circuit board 5, a second electromagnetic flow sensor 8, a capacitor The moisture content meter is shorted to 9;
[0031] The main body 6 of the electromagnetic flowmeter is provided with a first electromagnetic flow sensor 4 and a second electromagnetic flow sensor 8 arranged at intervals; the first electromagnetic flow sensor 4 and the second electromagnetic flow sensor 8 are arranged at 90° to each other;
[0032] A signal processing circuit board is arranged between the first electromagnetic flow sensor 4 and the second electromagnetic sensor 8;
[0033] The main body 6 of the electroma...
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The invention relates to the technical field of horizontal well flow, and concretely relates to an internal flow type four-electrode electromagnetic flow instrument system for a horizontal well. The system comprises a first electromagnetic flow sensor and a second electromagnetic flow sensor which are arranged on a magnetic flowmeter main body at an interval and form an angle of 90 DEG with each other; a signal processing circuit board is arranged between the two electromagnetic flow sensors; and a wire passing hole is formed in an electromagnetic flowmeter body, a fluid channel and two liquidoutlets are formed in the middle of the electromagnetic flowmeter body, the two liquid outlets are located in the two sides of the fluid channel respectively, preset included angles are formed between the two liquid outlets and the fluid channel respectively, the liquid outlets are located in the rear side of the second electromagnetic sensor, and a capacitive moisture content meter short circuitis installed at the positions of the liquid outlets. According to the system provided by the invention, real-time measurement of flow and water content in a flow collecting state can be completed, the logging timeliness is improved, the stability and reliability of a liquid production profile logging instrument are improved, and the system has wider field adaptability.
Description
technical field [0001] The invention relates to the technical field of horizontal well flow, in particular to an internal flow four-electrode electromagnetic flow instrument system for horizontal wells. Background technique [0002] At present, the flow measurement of horizontal wells mainly adopts two methods: turbine flowmeter and electromagnetic flowmeter. The turbine flowmeter is stuck due to sand production in the horizontal well, and the electromagnetic flowmeter is widely used because it has no moving parts and flow blocking elements. Measurement of vertical well flow. Due to the separation of light phase and heavy phase in horizontal wells, the flow pattern is quite different from that in vertical wells. There are four types of flow patterns: laminar flow, corrugated laminar flow, wavy flow and annular mist flow. The flow rate is generally low, and it is best to use concentrating measurement. Concentrating is to increase the velocity of the fluid, thereby improving ...
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IPC IPC(8): G01F1/58G01N27/22E21B47/00
CPCG01F1/58G01N27/223E21B47/00
Inventor 罗来军唐海涛刘兴斌谢荣华刘黄莹陈军李小林李强李洪斌王明伟陈蕾张落玲
Owner PETROCHINA CO LTD