Southwest Petroleum University

MingQiu Li

Yu Xiong

MeiJuan Guo

HaiTao Hong

LingHong Wang

XiuQing Li

MeiHua Chen

Rui Zhang

Daoming Wu

Shasha Li

Kai Yu

Aoran Leng

A method for correcting a movable hydrocarbon content of high gas-oil ratio shale oil based on phase behavior and rock pyrolysis includes: S1, simulating and preparing a fluid under original formation conditions based on formation fluid properties of a target block; S2, performing a pressure-volume-temperature (PVT) experiment and a fluid property test on the fluid prepared in the step S1 to obtain a composition of well fluid and a deviation factor; S3, establishing a theoretical shale movable hydrocarbon content prediction model to calculate a shale theoretical movable hydrocarbon content and a light hydrocarbon correction factor, and S4, determining, based on the light hydrocarbon correction factor obtained in the step S3, a restored light hydrocarbon content of shale oil and a restored original total oil content. This method, considering geological conditions and fluid properties of various shale oil reservoirs, corrects the movable hydrocarbon content of high gas-oil ratio shale oil.

Method for correcting movable hydrocarbon content of high gas-oil ratio shale oil based on phase behavior and rock pyrolysis

A core holder and a prediction method for starting pressure gradient of shale oil based on the core hold are provided. The core holder includes an inlet plug, an outlet plug, a core accommodating cavity disposed between the inlet plug and the outlet plug and used for accommodating the shale oil, a rubber gasket disposed between the outlet plug and the core accommodating cavity, and a microinjector including a microinjector needle portion that passes through the outlet plug and the rubber gasket in sequence to be in contact with the shale oil in the core accommodating cavity. The core holder and the method can solve problems that movable oil volume of a low-porosity, low-permeability and small-volume rock sample and a shale rock sample cannot be accurately measured, and that a movable scale and a starting pressure gradient of the shale oil cannot be measured.

Core holder and prediction method for starting pressure gradient of shale oil based on core holder

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Chengdu, China

MingQiu Li