Stratum parameter detection method based on nano motor

Abstract

The invention relates to a detection method, in particular to a stratum parameter detection method based on a nano motor. The nano motor is formed by depositing a catalytic metal layer with a decomposition effect on hydrogen peroxide on the inner side of a conical micro-nano motor shell and modifying the outer side of the conical micro-nano motor shell with indicator groups, and the nano motor ismixed with deionized water to prepare a nano motor turbid liquid; hydrogen peroxide decomposition can be catalyzed through the catalytic metal layer deposited on the inner surface of the nano motor, an oxygen concentration gradient is generated to enable the nano motor to move, and in the moving process of the micro-nano motor in a detected stratum, the indicator groups can generate irreversible physical or chemical changes under the action of a medium environment in the stratum; and the extracted nano motor is analyzed so as to obtain parameters such as temperature and pressure of the detected stratum.

Description

technical field [0001] The invention relates to a detection method, in particular to a formation parameter detection method based on a nanometer motor. Background technique [0002] In recent years, with the continuous development of stratigraphic reservoir resources, my country's main oilfields have gradually entered the middle and later stages of oil production, and the high-porosity block reservoirs with low mining difficulty have no remaining resources, and the oil content of produced fluids has decreased year by year. Undeveloped oil and gas resources in old oilfields are mainly concentrated in low-permeability micro-pores or even nano-pores, making detection and production difficult. At present, due to the characteristics of high temperature and high pressure, micro-nano scale, and complex fluid composition in the formation micro-nano-porous reservoir environment, the existing technical means cannot deeply sample the low-permeability micro-nano pores of the formation, r...

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Problems solved by technology

[0002] In recent years, with the continuous development of stratigraphic reservoir resources, my country's main oilfields have gradually entered the middle and later stages of oil production, and the high-porosity block reservoirs with low mining difficulty have no remaining resources, and the oil content of produced fluids has decreased year by year. Undeveloped oil and gas resources in old oilfields are mainly concentrated in low-permeability micro-pores or even nano-pores, making detection and production difficult

At present, due to the characteristics of high temperature and high pressure, micro-nano scale, and complex fluid composition in the formation micro-nano-porous reservoir environment, the existing technical means cannot deeply sample the low-permeability micro-nano pores of the formation, resulting in the inability to conduct micro-nano-porous reservoir resources in the formation. Direct and accurate detection

Existing low-permeability micro-nano-porous reservoir resource exploration still adopts the traditional conventional reservoir exploration method, which is evaluated by macroscopic logging data, underlying porosity, permeability and other parameters, which has low accuracy and large defects, which greatly limits the Subsequent secondary development of old oil reservoirs

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