Portable spontaneous imbibition measuring device

A measuring device, a technology of spontaneous imbibition, which is applied in the fields of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve the problems of increasing experimental cost, affecting experimental results, and long cycle, and saving the cost of testing. , Guarantee data accuracy, simple operation effect
CN104101563AActive Publication Date: 2014-10-15CHINA UNIV OF PETROLEUM (BEIJING)
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (BEIJING)
Publication Date
2014-10-15

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Abstract

The invention discloses portable spontaneous imbibition measuring device which comprises a drying chamber and a measuring chamber, wherein a temperature sensor I and a heating device I are arranged in the drying chamber, and a ventilation opening is formed in the side wall of the drying chamber; a temperature sensor II and a heating device II are arranged in the measuring chamber, and a weighing module is further arranged at the bottom of the measuring chamber; a stress sensor and a container rack are arranged in the weighing module and at the bottom of the measuring chamber, and the container rack is arranged above the stress sensor and is not contacted with the stress sensor; a container is fixed on the container rack; a rock sample suspension rack is arranged on the stress sensor, and a suspension rope is suspended on the rock sample suspension rack, is used for suspending a to-be-measured rock sample and extends deeply in the container; and the stress sensor is connected with a signal output end. The portable spontaneous imbibition measuring device can measure change relationship of the quality of a fracturing fluid absorbed by the rock sample at constant temperature and normal pressure over time, so that technical indexes such as the water absorption rate, capillary force, water absorption quantity and the like of the rock sample can be known from research of the spontaneous imbibition.
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Description

technical field

[0001] The invention relates to a portable spontaneous imbibition measuring device, which belongs to the fields of oil and gas field development and porous medium seepage mechanism research. Background technique

[0002] With the continuous discovery and experimental development of unconventional natural gas resources, research on unconventional natural gas resources is deepening. At present, in the research of tight reservoirs, especially low-porosity and low-permeability shale gas reservoirs, evaluating the spontaneous imbibition strength of reservoir rocks is one of the research focuses. First of all, due to the small throats of low-permeability reservoirs, most of which are at the micro-nano level, the spontaneous imbibition phenomenon caused by capillary force is more obvious than that of conventional reservoirs, and has a greater impact on the reservoir. Secondly, the water absorption capacity of low-permeability reservoirs depends on lithology, format...

Claims

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