A method for predicting wellbore temperature by region and segment based on cementing big data

A big data, sub-regional technology, applied in special data processing applications, design optimization/simulation, etc., can solve the problems of cumbersome formula derivation, troublesome table lookup, limited application scope, etc., to prevent cementing quality and safety accidents, improve Prediction accuracy and accuracy, the effect of high prediction accuracy
CN109101703BActive Publication Date: 2022-07-05CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
Publication Date
2022-07-05

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Abstract

The invention discloses a method for predicting wellbore temperature by region and segment based on cementing big data. , and then the data is mined, and the subsection multivariate regression geothermal gradient is used to establish the temperature prediction of each opening one by one using the progressive method. By adopting the invention, the prediction accuracy of the borehole temperature can be improved, and the engineering and safety accidents caused by the excessive prediction error of the borehole temperature can be avoided.
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Description

technical field

[0001] The invention relates to a method for predicting wellbore temperature, in particular to a method for predicting wellbore temperature by region and subsection based on cementing big data. Background technique

[0002] Borehole temperature is one of the important factors affecting the safety and quality of cementing operations, and affects the selection of cement slurry system, the safety and quality of cementing operations. A low temperature prediction will seriously shorten the pumpable time of cement slurry, which will easily lead to cementing accidents. A high temperature prediction will prolong the waiting time for setting, increase the possibility of oil and gas and water channeling in the well, and delay subsequent drilling operations.

[0003] The cementing construction design is generally done before the completion of the drilling, without electrical measurement, and the wellbore temperature of the completion depth cannot be provided in time. Us...

Claims

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