公开(公告)号：US11480050B2

公开(公告)日：2022-10-25

申请号：US16493786

申请日：2019-01-08

Applicant: ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Pingsong Zhang ,  Hua Cheng ,  Zhishu Yao ,  Guangquan Xu ,  Chuanxin Rong ,  Shenglin Li

IPC: E21B47/11 ,  E21B47/07 ,  E21B49/08 ,  E21B49/00 ,  G01V3/20

Abstract: A device for measuring a flow velocity and a flow direction and geological parameters of groundwater through cross holes of deep wells includes detectors and a device for throwing the tracer source. A method includes measuring a correspondence between a conductivity and a concentration of a tracer solution at different temperatures in a laboratory; selecting at least two boreholes; selecting a target aquifer section; placing the detectors in the target aquifer section in the hole to test a conductivity background value and a temperature value; using the device for throwing the tracer source to place the tracer solution in the hole for throwing the tracer source, and using the detectors to measure a water conductivity and temperature in a detection hole, to obtain a distribution curve of a tracer solution solubility with time; performing cross-test, and calculating the seepage flow velocity and flow direction of groundwater in the hole.

公开(公告)号：US20240175343A1

公开(公告)日：2024-05-30

申请号：US18543116

申请日：2023-12-18

Applicant: Anhui university of science and technology

Inventor： Qinghe Zhang ,  Zhiwei Liang ,  Liang Yuan ,  Pingsong Zhang ,  Fawang Yang ,  Tong Zhang

IPC: E21B43/295

CPC classification number: E21B43/295

Abstract: Disclosed is a suitability evaluation method for developing underground coal gasification (UCG) engineering by utilizing a deep coal seam, including: acquiring basic geological conditions, engineering geological problems, hydrogeological conditions, contained coal quality, deep coal seam conditions, and heat and syngas components of unit coal gasification in a deep coal seam region to obtain scores of corresponding influencing factors; determining impact indexes of the geological condition and influencing factors; and determining the suitability of developing UCG engineering by utilizing the deep coal seam according to a comprehensive impact index. The suitability of developing UCG engineering by utilizing the deep coal seam is evaluated by a comprehensive analysis method.