固井注替排量确定方法及装置
By acquiring wellbore structure and fluid information, calculating the hydrostatic column pressure and frictional pressure drop window, and using the bisection method to iteratively solve the displacement window, the problem of insufficient injection displacement design in marine pressure-controlled cementing was solved, thus improving construction safety and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA OILFIELD SERVICES LTD
- Filing Date
- 2025-10-20
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, there is a lack of effective cementing displacement design methods in marine pressure controlled cementing construction, which makes it difficult to guarantee construction safety and quality. Reliance on experience from nearby wells seriously restricts the refined development of marine pressure controlled cementing.
By acquiring wellbore structural dimensions, cementing fluid properties, and injection information, the positional distribution of the fluid within the wellbore is determined, the hydrostatic column pressure is calculated, and the frictional pressure drop window is obtained through bisection iterative solution. Then, the displacement window is determined, and the cementing displacement rate is determined by combining the fluid injection information.
It enables precise calculation of cementing displacement, improves the safety and quality of marine pressure-controlled cementing operations, and supports the refined development of marine pressure-controlled cementing.
Smart Images
Figure CN121047523B_ABST
Abstract
Citation Information
Patent Citations
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