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High-temperature core-passing electromagnetic flow logger

A technology of electromagnetic flow and logging instrument, which is applied in measurement, borehole/well components, earthwork drilling and production, etc. It can solve the problems of increasing instrument length, many sealing links, and skin bag corrosion, so as to reduce construction difficulty and failure rate Low, simple structure effect

Pending Publication Date: 2021-01-12
大庆科力远石油装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the influence of downhole pressure on traditional instruments, the existing traditional electromagnetic flowmeters use the oil injection method to eliminate the influence on the sensor part, and the bladder is easily corroded by gas such as hydrogen sulfide in the well, and there are too many sealing links, which increases the reliability of the instrument. length, over time, there will be pressure leakage and liquid ingress

Method used

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  • High-temperature core-passing electromagnetic flow logger
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  • High-temperature core-passing electromagnetic flow logger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment one: if Figure 1-9 As shown, a high-temperature through-core electromagnetic flow logging tool involved in this embodiment includes:

[0029] Figure 5 with 6 For sensor pressure housing A:

[0030] 2-1 is the lower end of the pressure-bearing shell A of the sensor, which is used to connect the lower joint.

[0031] 2-2 is the positioning step of the pressure-bearing housing A of the sensor, which is used to fix the insulating sleeve of the sensor.

[0032] 2-3 are electrode installation holes for installing receiving electrodes.

[0033] 2-4 is the upper end of the pressure-bearing shell A of the sensor, which is used to connect the pressure-bearing shell B of the sensor.

[0034] Figure 7 with 8 For the board holder:

[0035] 3-5 is a through-wire hole, which is used for the penetration of the connection between the sensor and the circuit board.

[0036] 3-6 are top screw holes, used to fix the circuit board bracket and prevent buckling.

[0037...

Embodiment 2

[0065] Embodiment two: if Figure 1-9 As shown, a kind of high-temperature through-core electromagnetic flow logging tool involved in this embodiment,

[0066] The high-temperature through-core electromagnetic flow logging tool is a flow meter for flow measurement based on Faraday's law of electromagnetic induction. The instrument has a small pressure loss, a wide range of measurable flow rates, and is almost not affected by fluid media. It can measure the fluid flow of acids, alkalis, salt solutions, water, sewage, corrosive liquids, mud, ore pulp, and paper pulp. Since the principle of electromagnetic induction is irrelevant to the temperature, pressure and properties of the conductive medium (it is enough if the conductivity exceeds 5us / m), the requirements for the use environment of the instrument are reduced, and the scope of application of the instrument is wider.

[0067] Compared with other similar products, it has the following characteristics:

[0068] 1. The instr...

Embodiment 3

[0073] Embodiment three: as Figure 1-9 As shown, the stability of the product of a high-temperature through-core electromagnetic flow logging tool involved in this embodiment:

[0074] The circuit of the instrument adopts a military-grade chip, which can adapt to the harsh underground environment and ensure the stability of the instrument after many times of high and low temperature aging and screening.

[0075] The electrodes of the instrument are made of specially treated titanium alloy materials, which are not stained, oxidized, and not affected by fluid media.

[0076] The probe sensor of the instrument adopts a symmetrical distribution design, and the whole is sealed and packaged. The instrument lining is made of imported high-quality PEEK. This material is corrosion-resistant, high-temperature resistant, and has excellent insulation performance.

[0077] When the probe sensor passes through the wire, use shielded wires for the wires passing through the wire to avoid in...

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Abstract

The invention provides a high-temperature core-passing electromagnetic flow logger, and belongs to the field of electromagnetic flow loggers. According to the high-temperature core-passing electromagnetic flow logger, a signal transmitting and exciting circuit receives signals of a single-chip microcomputer circuit and transmits the signals, and a signal receiving and processing circuit receives the signals transmitted by the signal transmitting and exciting circuit, amplifies and filters the signals and transmits the signals to an upper computer; the single-chip microcomputer circuit receivessignals detected by a sensor and transmits the signals to the signal transmitting and exciting circuit; and one end of an upper connector is connected with a measuring section through threads, the other end of the measuring section is fixed to one end of a circuit board section in inserted and fixed manners, and a lower connector is fixed to the other end of the circuit board section in insertedand fixed manners. The high-temperature core-passing electromagnetic flow logger is small in pressure loss, large in measurable flow range and high in reliability, the one-time logging success rate isgreatly increased due to the characteristics of an electromagnetic flow meter, a circuit of the logger is of a novel design, the logger is shortened, and the on-site construction difficulty is reduced.

Description

technical field [0001] The invention relates to a high-temperature through-core electromagnetic flow logging instrument, which belongs to the technical field of electromagnetic flow logging instruments. Background technique [0002] Due to the influence of downhole pressure on traditional instruments, the existing traditional electromagnetic flowmeters use the oil injection method to eliminate the influence on the sensor part, and the bladder is easily corroded by gas such as hydrogen sulfide in the well, and there are too many sealing links, which increases the reliability of the instrument. The length, over time, will cause pressure leakage and liquid ingress. [0003] In order to solve the problems of traditional instruments, this instrument adopts a one-piece submerged shell, which does not need to be filled with oil to balance. The instrument becomes shorter, which reduces the difficulty of on-site construction. Contents of the invention [0004] The object of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/12
CPCE21B47/00E21B47/12
Inventor 刘晓志马彦荣
Owner 大庆科力远石油装备制造有限公司
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