Simulation device for syngenetic cementation of carbonate rocks

Abstract

The invention discloses a simulation device for syngenetic cementation of carbonate rocks. The simulation device for the syngenetic cementation of the carbonate rocks comprises a bipolar piston pump,a saturated CO2 pressure container, and a precipitation reaction unit, wherein the bipolar piston pump is connected with the saturated CO2 pressure container; and the saturated CO2 pressure containeris connected with the precipitation reaction unit. The simulation device for the syngenetic cementation of the carbonate rocks provided by the invention has the advantages that the process of cementation between the carbonate rocks and formation water under the environments of the surface vadose zone and the surface hyporheic zone can be simulated, so that occurrence control factors of the syngenetic cementation of the carbonate rocks and syngenetic cement types of the carbonate rocks can be studied through experiments, and the pore preservation mechanism can be facilitated.

Description

Technical field [0001] The invention relates to the technical field of petroleum geology. More specifically, it relates to a simulation device for the cementation of carbonate rocks in the same period. Background technique [0002] The oil and gas resources of marine carbonate formations in my country account for more than 40% of the country's total oil and gas resources, and are the main areas for strategic succession of oil and gas resources. However, my country's marine carbonate rocks have the characteristics of old age, deep burial, and complicated accumulation, which lead to problems such as difficult prediction and high exploration cost. How to reasonably understand the formation mechanism of large-scale pores in carbonate rocks is the key to judging whether the rock formation has the conditions for storing oil and gas, and it is also the key to improving the efficiency of oil and gas exploration. [0003] Studies have shown that after the carbonate rock undergoes post-dep...

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Problems solved by technology

However, due to the lack of experimental equipment for simulating the cementation of carbonate sediments in the syngenetic period, it can only be inferred from the dissolution experiment that the precipitation of carbonate rocks occurred, leading to the occurrence mechanism, controlling factors and cementation Problems such as the physical pattern and other issues have not been resolved, which limits the reasonable understanding of the large-scale pore preservation mechanism of carbonate rocks.

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