Petrochina Company Limited

Sichuan Kelite Oil and Gas Technology Co. Ltd

Keming Zhou

Jiahuan He

Yong Duan

Li Zeng

Bo Kong

Fusen Xiao

Nong Li

Chunyan Zou

Cheng Lei

Mei Huang

Lurui Dang

Hongbin Chen

Jintao Zhang

Huajie Yu

The present disclosure provides a device and methods for determining the original stratum direction of a core. The device includes a confining pressure pump, a resistance meter, and a core holder composed of upper and lower portions. The present disclosure further provides three methods for determining the original stratum direction of the core. The three methods respectively use the device to measure resistance values at different positions of the core, and compare a test result with an imaging result of resistivity imaging logging data to determine the rock direction of the core in a stratum.

Device and method for determining original stratum direction of core

The present disclosure discloses a resistivity measurement method, device and system. The method comprises: placing a core to be measured into the core holder after a 100% saturated water treatment, and injecting a predetermined confining pressure by the confining pressure pump; turning on the displacement source to carry out a displacement, and at an interval of a predetermined time period, acquiring a current value by the ammeter and a voltage value by the voltmeter; determining a resistivity of the core according to the current value, the voltage value, an arc length of the curved electrode, and a radius and a length of the core. The present disclosure can realize a rock resistivity measurement in a vertical direction under formation conditions for a plunger-type core, without needing to change the core preparation technology or method.

Resistivity measurement method, device and system

Growing community of inventors

Beijing, China

Keming Zhou