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Well killing abnormal working condition identification method and system based on big data

A technology of abnormal working conditions and identification methods, applied in data processing applications, special data processing applications, earthwork drilling and production, etc., can solve problems such as the safety, reliability and efficiency of well killing operations to be improved, well killing process processing, etc. , to achieve the effects of improving operation efficiency, reducing economic losses, and reducing well killing construction period

Pending Publication Date: 2021-07-23
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Description
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Problems solved by technology

[0004] However, in the prior art, there is no special process treatment for abnormal working conditions in well killing, and the safety, reliability and efficiency of well killing operations need to be improved

Method used

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  • Well killing abnormal working condition identification method and system based on big data

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Embodiment

[0039] A method for identifying abnormal well killing conditions based on big data, such as figure 1 As shown, the method includes the following steps:

[0040] In the case of overflow and gas invasion in the oil and gas well, shut down the well quickly, and choose the well killing method combining the engineer method and the hard top method according to the actual situation;

[0041] Input the specified parameters of the well into the big data well killing software before killing the well;

[0042] Collect real-time data of the specified parameters during well killing, including vertical pressure, casing pressure, pump pressure, pump stroke, pump displacement, annular volume, drilling fluid density and well depth;

[0043] Preprocessing the real-time data, specifically complementing the missing data or denoising the noise data, and synchronizing it to the database in the big data killing software;

[0044] Draw the collected real-time data into a kill curve, compare it with...

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Abstract

The invention provides a well killing abnormal working condition identification method and system based on big data. The well killing abnormal working condition identification method based on the big data comprises the following steps of inputting specified parameters of a well into big data well killing software before well killing; collecting real-time data of the specified parameters during well killing; preprocessing the real-time data and synchronizing the real-time data to a database in the big data well killing software; drawing the collected real-time data into a well killing curve; continuously killing the well, observing the fluctuation condition of the well killing curve compared with a standard curve, judging whether the fluctuation is in a preset range by using a big data well killing analysis method, and analyzing the reason that the fluctuation exceeds the preset range by using the big data well killing analysis method if the fluctuation is beyond the preset range; and identifying abnormal working conditions according to a analysis result exceeding the preset range. The abnormal working conditions during well killing are recognized and predicted in a short term through the big data, and the problems existing in well killing operation are rapidly eliminated, so that the well killing process is efficiently completed, safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of well killing working condition identification, and in particular relates to a method and system for identifying abnormal well killing working conditions based on big data. Background technique [0002] In the drilling process of oil and gas fields, well control technology is fundamental. Killing is a process often used in drilling. If abnormal conditions occur in the well during well killing, the abnormal conditions cannot be effectively identified and dealt with, and the gas or liquid in the well is not controlled, which will develop into a more dangerous condition. Some situations, such as blowout out of control, harmful gas spread, etc. lead to huge losses. [0003] Existing well killing methods include conventional well killing and unconventional well killing. Conventional well killing includes driller's method and engineer's method. Unconventional well killing includes volume control method, hard ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/06G06Q50/02G06F30/20
CPCE21B47/00E21B47/06G06Q50/02G06F30/20
Inventor 梁爽罗方伟孙文勇孙秉才苗文成郑钰山张绪亮和宁宁李墨松李轶明
Owner BC P INC CHINA NAT PETROLEUM CORP
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