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An oil and gas well sand production monitor and sand production monitoring data processing method

A processing method and monitoring data technology, applied in the directions of surveying, earthwork drilling and production, borehole/well components, etc., can solve confusion or uncertainty, can not obtain pure noise signals online in real time, instrument installation, replacement, repair, maintenance Complicated problems, to achieve the effect of improving accuracy

Active Publication Date: 2019-09-24
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the sand production monitor announced by USP424028 needs to drill holes in the production pipeline and install probes during measurement. The installation, replacement, repair, and maintenance of the instrument are complicated, and there are also great risks in the sealing and pressure bearing of the pipeline; the DSP of Clampon Company -06 Ultrasonic monitor belongs to the external structure. By monitoring the sound wave signal caused by sand particles hitting the pipe wall, the sand output signal is finally obtained through signal conversion. However, it can only obtain the background noise at the initial stage of the test, and cannot obtain pure noise signals in real time and online. Hence, confusion or uncertainty in distinguishing between presence and absence of sanding during successive tests

Method used

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  • An oil and gas well sand production monitor and sand production monitoring data processing method
  • An oil and gas well sand production monitor and sand production monitoring data processing method
  • An oil and gas well sand production monitor and sand production monitoring data processing method

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Experimental program
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Effect test

Embodiment 1

[0062] This embodiment provides a figure 1 The shown oil and gas well sand production monitor is composed of a sand production monitoring channel, a noise monitoring channel and a data acquisition and processing system. The sand production monitoring channel is composed of a sand production monitoring sensor 2, a charge amplifier Es and a filter Fs. The noise monitoring channel is composed of a noise monitoring sensor 1, a charge amplifier En and a filter Fn, and the data acquisition and processing system at least includes a data acquisition and processing circuit, which is used to monitor the sand output signal of the sand output monitoring channel and the noise signal of the noise monitoring channel. collection and processing;

[0063] The lead-out line of the sand monitoring sensor 2 is connected to the input terminal Es1 of the charge amplifier Es, the output terminal of the charge amplifier Es is connected to the input terminal of the filter Fs, and the output terminal of...

Embodiment 2

[0068] On the basis of embodiment 1, this embodiment provides a kind of figure 1 In the sand production monitor for oil and gas wells shown, the frequency response characteristics, bandwidth and sensitivity of the sand production monitoring sensor 2 and the noise monitoring sensor 1 are the same; the charge amplifier Es in the sand production monitoring channel and the charge amplifier En in the noise monitoring channel The input impedance, output impedance, magnification and frequency response characteristics are all the same; the center frequency, cutoff frequency, passband bandwidth, gain, loss, quality of the filter Fs in the sand monitoring channel and the filter Fn in the noise monitoring channel Factors and sensitivities are the same. To ensure the consistency and accuracy of sand signal and noise signal collection and processing.

Embodiment 3

[0070] This embodiment provides a figure 2 The installation method of the sand production monitor for oil and gas wells shown includes the following steps:

[0071] Step 1) At a point 1.5-2.5 times the diameter of the oil and gas pipeline 3 downstream of the pipeline axis of the 90° elbow 6 of the oil and gas pipeline 3, use a file to file off the paint layer at this position, and apply silicone grease to the position of the file-off paint layer ;

[0072] Step 2) Fix the sand output monitoring sensor 2 at the position coated with silicone grease, and connect the lead wire of the sand output monitoring sensor 2 to the input terminal Es1 of the charge amplifier Es;

[0073] Step 3) Install the noise monitoring sensor 1 on the outer wall directly above the upstream straight pipe section 7 of the sand output monitoring sensor 2, first use a file to file off the paint layer at this position, and apply silicon at the position of the file-off paint layer. The noise monitoring sen...

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Abstract

The invention provides an oil and gas well sand production monitor. The oil and gas well sand production monitor is composed of a sand production monitoring channel, a noise monitoring channel and a data collecting and processing system. The invention further provides an oil and gas well sand production monitoring data processing method. The data collecting and processing system is used for synchronously collecting output signals after smoothing of the sand production monitoring channel and the noise monitoring channel, the signals are compared so that noise can be eliminated, a pure sand production signal rsp(i) is obtained, and the sand production rate Mt and cumulative sand production amount M in unit time are obtained. The problem that in the prior art, the noise characteristics cannot be measured and distinguished specially during sand production monitoring is mainly solved. Through the calculation of the sand production amount, the purposes that parameters of oil production or gas production are guided to be adjusted in time, proper sand production is ensured, the capacity of oil and gas wells is increased and the productive life of the oil and gas wells is prolonged are achieved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas well development, and in particular relates to an oil and gas well sand production monitor and a sand production monitoring data processing method. Background technique [0002] Sand production in oil and gas wells will cause damage to mechanical equipment and reduce the life of oil and gas wells. Through sand production monitoring, the sand production situation and sand production law can be grasped in time, the production status of oil and gas wells can be diagnosed, the basis for sand prevention and control can be provided, production costs can be reduced, and the life of oil and gas wells can be extended. [0003] The main factors affecting the sand production of oil and gas wells are geological factors and production factors, and the two are interrelated, which determines the uncertainty of sand production. Existing sand monitor has two kinds, and the one, the sand monitor announced by U...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00
Inventor 高森龙庆陈磊党博时峥樊炜赵志华孙飞
Owner BC P INC CHINA NAT PETROLEUM CORP