US 12,332,231 B2
Experimental device and method for solubility determination of methane in oil-based drilling fluid
Jie Zhang, Chengdu (CN); Xuefeng Sun, Chengdu (CN); Qiulai Xue, Chengdu (CN); Cuinan Li, Chengdu (CN); Qiang Wei, Chengdu (CN); Zhilin Li, Chengdu (CN); Mubai Duan, Chengdu (CN); and Xianjie He, Chengdu (CN)
Assigned to Southwest Petroleum University, Chengdu (CN)
Filed by Southwest Petroleum University, Chengdu (CN)
Filed on Jul. 2, 2023, as Appl. No. 18/346,259.
Claims priority of application No. 202310446880.4 (CN), filed on Apr. 24, 2023.
Prior Publication US 2024/0353389 A1, Oct. 24, 2024
Int. Cl. G01N 33/28 (2006.01); G01N 13/00 (2006.01)
CPC G01N 33/2841 (2013.01) [G01N 13/00 (2013.01); G01N 33/2823 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An experimental device for solubility determination of methane in oil-based drilling fluid comprises; a pressure-resistant gas chamber (15) and an equilibrium still (25) both arranged in a constant-temperature oil bath heating oven (26), and a gas booster pump (4) connected to the pressure-resistant gas chamber (15), wherein the gas booster pump (4) is connected to drive air source inlet (5), a gas check valve (10) is arranged on a pipe between the pressure-resistant gas chamber (15) and the gas booster pump (4), the gas booster pump (4) is also connected with a high-pressure gas cylinder (1), the equilibrium still (25) is divided into a dissolution equilibrium chamber at the top and a hydraulic oil chamber (27) at the bottom by a high-pressure dynamic seal structure (20), the dissolution equilibrium chamber is connected to a liquid inlet funnel (21) through the fourth globe valve (22), and the hydraulic oil chamber (27) is connected to a high-pressure metering pump (23) for replenishing hydraulic oil inside; wherein the experimental device further comprises a vacuum system (30) used for vacuuming the pressure-resistant gas chamber (15) and the equilibrium still (25);
wherein a first temperature sensor (13) and a first pressure sensor (14) are provided in the pressure-resistant gas chamber (15) for collecting temperature and pressure signals; a second temperature sensor (17) and a second pressure sensor (24) are provided in the dissolution equilibrium chamber for collecting temperature and pressure signals; the first temperature sensor (13), the first pressure sensor (14), the second temperature sensor (17), and the second pressure sensor (24) are connected to the data acquisition device (31).