A water-rock reaction device and operation method for simulating a closed formation environment
A technique for simulating strata in a closed environment, applied in the direction of material inspection, soil material testing, etc., can solve the problems of breaking the fluid-rock reaction balance and being unable to simulate closed systems
Active Publication Date: 2021-10-15
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the existing water-rock reaction device, the fluid continuously flows out of the system and unsaturated unreacted fluid continuously enters the device, and there is a continuous exchange of matter and energy with the outside world, which cannot simulate a closed system
Even if the outlet of the reaction device is closed to keep the fluid in a relatively static state, if it is necessary to take samples from the reactor for testing, it will inevitably break the closed experimental environment, and the reaction balance of the fluid and rock in the reactor will be broken.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0046] (1) Debugging before the experiment: connect the pipeline, open the first stop valve 3a, the second stop valve 3b, the third stop valve 3c, the fifth stop valve 3e, the sixth stop valve 3f, the seventh stop valve 3g, the eighth stop valve Stop valve 3h, pass pure water into the whole system, test the sealing performance, control the second pump 2b to push the liquid in the first reactor 7 into the second reactor 8, and push the liquid in the second reactor 8 into the pipeline , background ions (Ca 2+ , Mg 2+ ) concentration, in order to calculate the calcium carbonate ion product change trend in the system as the ion concentration background value in case of follow-up data post-processing;
[0047] (2) Experimental fluid system preparation: the CO in the first cylinder 1 2 The gas is passed into the first pressure vessel 4a and the second pressure vessel 4b filled with saturated NaCl solution through the first pump 2a to the CO 2 saturation, to obtain a concentration...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a water-rock reaction device and an operation method for simulating a closed formation environment. The invention provides a water-rock reaction device for simulating a closed formation environment, which sequentially includes: a fluid preparation and delivery system, a synchronous reaction and sampling system, an information collection and processing system, and a fluid preparation and delivery system, a synchronous reaction and sampling system and The pipeline connected to the information acquisition and processing system, the synchronous reaction and sampling system includes at least two reactors, including at least: the first reactor, used to accommodate fluid and rock samples, for simulating the formation of water rocks in a closed environment The reaction process, and prepare supplementary fluid; and the second reactor, which is connected to the first reactor through pipelines, is used to accommodate fluid and rock samples, and reacts synchronously with the first reactor, simulating the formation in a closed environment The water-rock reaction process that takes place. The invention also provides an operation method of a water-rock reaction device for simulating a closed formation environment.
Description
technical field [0001] The invention relates to the field of water-rock reaction process, in particular to a device and a method for simulating water-rock reaction in a closed formation environment and monitoring, recording and storing the water-rock reaction process on-line in real time. Background technique [0002] Today's oil and gas exploration practice reveals that during the late burial process of carbonate rocks, especially the secondary pores formed by deep fluid dissolution reformation are important oil and gas storage spaces. For example, in deep and ultra-deep carbonate reservoirs, fluid-rock interaction is an important process that affects reservoir performance. Fluid-rock interaction includes two processes of mineral dissolution and mineral precipitation. Accumulation performance, precipitation reduces pores and reduces rock storage performance. The source of the fluid may be deep hydrothermal fluid, formation water or pore water, etc. Under high-temperature ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 丁茜何治亮孙冬胜刘全有沃玉进朱东亚孟庆强
Owner CHINA PETROLEUM & CHEM CORP