Well cementation spacer fluid core filter cake cleaning efficiency evaluation device

The invention discloses a device for evaluating the cleaning efficiency of a well cementation spacer fluid core filter cake. The device comprises a high-temperature and high-pressure kettle, a driving unit, a heating unit, a pressurizing unit, a liquid pumping and recycling unit, a mechanical data a...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HE GUANXI, CHEN XU, XIN XIA, CHO HOON, LI XIAOHAN, LIU WENMING, LIN ZHIHUI, FU JIAWEN, LI QIANG, LU, ZE, QI BEN
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The invention discloses a device for evaluating the cleaning efficiency of a well cementation spacer fluid core filter cake. The device comprises a high-temperature and high-pressure kettle, a driving unit, a heating unit, a pressurizing unit, a liquid pumping and recycling unit, a mechanical data acquisition unit and a control unit, the device adopts heat-conducting oil as a heating carrier and a pressurizing carrier to realize simulation of an underground high-temperature and high-pressure environment, an experimental result is visual and accurate, strength changes before and after a filter cake is cleaned are collected through a mechanical probe, and result data of filter cake washing efficiency are visually represented and obtained. The device can simulate the cleaning efficiency of same or different spacer fluid cleaning filter cakes under the conditions of different temperatures, different pressures and different oil-based drilling fluids forming filter cakes, can scientifically characterize the cleanin