Method for determining phase-state type and saturation of fluid in tight reservoirs by NMR technology

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United States of America

PATENT NO 12163905
APP PUB NO 20240219329A1
SERIAL NO

18167712

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Abstract

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A method for determining a phase-state type and saturation of a fluid by an NMR technology includes putting a core to be measured to an NMR phase-state testing device, injecting a heavy water solution from both ends of a gripper at the same time until the core reaches the formation pressure, and stopping; scanning the core to obtain a two-dimensional NMR map, and determining whether the core contains a gas phase; reducing the temperature of the gripper, and collecting an oil phase volume, a gas phase volume and a water phase volume discharged from the core; purge the pipelines out with nitrogen, collecting a water phase volume and an oil phase volume in the pipelines; performing dry distillation on the core to obtain an oil phase volume and a water phase volume; and obtaining the saturations of various phases according to the fluid volumes of multiple phases in the core.

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SOUTHWEST PETROLEUM UNIVERSITYNO 8 XINDU AVENUE XINDU DISTRICT CHENGDU 610500

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gu, Zheng Chengdu, CN 45 50
Guo, Ping Chengdu, CN 56 368
Hu, Shiyong Chengdu, CN 1 0
Hu, Yisheng Chengdu, CN 10 3
Liu, Huang Chengdu, CN 123 799
Tu, Hanmin Chengdu, CN 2 0
Wang, Shuoshi Chengdu, CN 6 1
Wang, Zhouhua Chengdu, CN 8 0
Xu, Qinglong Chengdu, CN 2 0
Zhao, Wenhua Chengdu, CN 5 25

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