Automatic liquid level tester for coalbed methane gas well

• Main Authors: HUANG YUMEI, QI GUOCHAO, LIU WEI, LI HANGSHUAI, WANG QIANG, MU ZHAOZHI
• Format: Patent
• Language: Chinese; English
• Published: 24.12.2014
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model belongs to the technical field of oil well logging, and particularly relates to an automatic liquid level tester for a coalbed methane gas well. The tester comprises a wellhead connector, an air supply source and an armoured air pipe, wherein the wellhead connector is used for being connected with the well to be tested, and the air supply source is used for providing compressed air to the well to be tested. The wellhead connector comprises an outer cylinder, a compressed air channel, a release sleeve air channel, a microphone and a pressure transmitter, wherein the compressed air channel and the release sleeve air channel are formed in the outer cylinder, and the microphone and the pressure transmitter are arranged on the connection portion of the wellhead connector and the well to be tested. One end of the compressed air channel is connected with the air supply source through the armoured air pipe, and the other end of the compressed air channel is communicated with the well to be tested. O