原位观察浸泡后岩石结构演变的电镜样品制备装置及方法
By optimizing the scanning electron microscope sample preparation device, ensuring stable contact between fluid and rock under high temperature and pressure, and monitoring and adjusting the fluid concentration, the error problem in observing rock structure evolution in the existing technology was solved, the wellbore instability mechanism in deep formations was revealed, and a more reliable drilling fluid countermeasure was provided.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2022-03-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot guarantee stable contact between fluid and rock under high temperature and pressure. The relative positions of rock samples and the stage are inconsistent, and the concentration of fluid reactants changes greatly, resulting in large errors in the preparation of scanning electron microscope samples, making it difficult to reveal the wellbore instability mechanism of deep fractured formations.
Design a device that includes a high-temperature and high-pressure immersion module, an intermediate container, a constant-flow and constant-pressure injection pump, and a fluid ion concentration monitoring module. The constant-pressure and constant-flow pump and heating module ensure stable contact between the fluid and the rock under high temperature and high pressure. The fluid ion concentration is monitored and adjusted in real time to ensure that the rock sample is aligned with the stage.
It reduces experimental errors, enables more accurate observation of rock structure changes after fluid immersion, reveals the wellbore instability mechanism in deep formations, and provides more reliable drilling fluid countermeasures.
Smart Images
Figure CN116794083B_ABST