Temporary plugging powder mixing device

• Main Authors: ZHANG YULIANG, LIU WEI, CHENG JIENING, ZHU JIANHUI, ZHU GUOLIANG, MENG GANG, JI KAI, WEN JUNLAN, WANG BIN
• Format: Patent
• Language: English
• Published: 21.01.2015
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model discloses a temporary plugging powder mixing device which comprises a barrel with an open end and an outlet end, a liquid outlet valve and a filter screen with screen holes, wherein the open end is used for adding temporary plugging powder and water and the outlet end is used for releasing a mixed temporary plugging powder liquid; the liquid outlet valve for controlling circulation of the temporary plugging powder liquid is arranged at the outlet end of the barrel; the periphery of the filter screen is fixed on the circumferential inner wall of the barrel and the filter screen covers the section of the barrel. The barrel comprises a main body section as well as a cone-shaped transitional section which is communicated with the main body section, wherein the sectional area is gradually decreased. The filter screen is fixed on the end face at the boundary of the main body section and the cone-shaped transitional section. A liquid outlet pipeline is arranged in a position which is communicated with the outlet of the liquid outlet valve, and the liquid outlet pipeline is provided with a liquid inlet end and at least one liquid outlet end. The temporary plugging powder mixing device disclosed by the utility model can be used for adding uniform temporary plugging powder into a well repair tubular column during well repair operations such as well flushing and sand washing of an absorption well.