US 12,169,171 B2
Method and device for measuring sand content in miscible phase fluid
Jige Chen, Chengdu (CN); Bin Xu, Chengdu (CN); and Chao Luo, Chengdu (CN)
Assigned to Chengdu Sea Pioneers Technology Co., Ltd., Chengdu (CN)
Filed by Chengdu Sea Pioneers Technology Co., Ltd., Chengdu (CN)
Filed on Dec. 29, 2022, as Appl. No. 18/090,609.
Claims priority of application No. 202111643578.5 (CN), filed on Dec. 29, 2021.
Prior Publication US 2023/0204499 A1, Jun. 29, 2023
Int. Cl. G01N 21/31 (2006.01); G01N 21/85 (2006.01)
CPC G01N 21/31 (2013.01) [G01N 21/85 (2013.01); G01N 2201/12746 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for measuring a sand content in a miscible phase fluid, comprising:
passing a miscible phase fluid containing at least two fluid media from an oil and gas well through a pipeline;
carrying out a measurement with a light quantum of four levels on the miscible phase fluid by a phase separator installed on the pipeline to obtain linear masses of the at least two fluid media, wherein:
the light quantum of four levels comprises a light quantum of first level, a light quantum of second level, a light quantum of third level and a light quantum of fourth level, and
the step of carrying out a measurement with a light quantum of four levels on the miscible phase fluid by a phase separator installed on the pipeline to obtain linear masses of the at least two fluid media comprises:
emitting the light quantum of first level, the light quantum of second level, the light quantum of third level and the light quantum of fourth level by the phase separator installed on the pipeline;
detecting a measured transmission quantity of the light quantum of four levels for the at least two fluid media;
obtaining a ratio between medium-free transmission quantities of the light quantum of four levels, wherein the medium-free transmission quantity is a transmission quantity in an empty and medium-free pipeline;
obtaining a linear mass absorption coefficient of the light quantum of first level, the light quantum of second level and the light quantum of third level for the at least two fluid media, and Compton scattering constant of the light quantum of fourth level; and
calculating a sand content in mass fraction in the miscible phase fluid based on the linear masses of the at least two fluid media.