A wide-temperature-pressure-range drilling fluid rheological mode multi-parameter determination method
By combining experimental measurements and nonlinear least squares fitting methods with RS model, a temperature and pressure correction model suitable for high temperature and high pressure conditions was established. This solved the problem of determining drilling fluid rheological parameters under high temperature and high pressure conditions, and improved the accuracy of fluid flow behavior analysis and oil production efficiency.
CN120275232BActive Publication Date: 2026-05-12CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2025-04-01
- Publication Date
- 2026-05-12
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Figure CN120275232B_ABST
Abstract
The present application relates to a kind of wide temperature pressure domain drilling fluid rheological mode multi-parameter determination method, comprising: step 1: carry out rheological characteristic experiment, respectively at different temperature and pressure, measure the rheological parameter of drilling fluid sample at different rotational speed;Step 2: the rheological parameter of R-S mode is fitted using nonlinear least square method;Step 3: draw the image of different rheological parameter with temperature pressure variation, obtain the temperature pressure correction model of R-S mode applicable under high temperature and high pressure condition: step 4: the predicted value of rheological parameter under different temperature and pressure is calculated using temperature pressure correction model.The present application method is simple, and precision and efficiency are all superior to traditional method, show good stability.
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