A section of thick bamboo is salvaged to smallclothes junk

• Main Authors: PENG HAIJI, WANG CHUNJIANG, LI DEBAO, ZHANG JIANHONG, ZHANG XIANJUN, SUN JIANHUA, WANG HONGYANG, DU HAIBO, LI XIA, XI QINGJIAN
• Format: Patent
• Language: English
• Published: 25.11.2015
• 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

A section of thick bamboo is salvaged to smallclothes junk for in the construction of oil field workover. Characterized by: top connection upper portion has internal thread and well workover tubular column to be connected, lower part and the welding of barrel upper portion, there is the baffle lower part inner chamber one side of barrel, the opposite side has the support circular bead, the upper portion welding of baffle has the transverse axis, epaxial cluster has loose -leaf and torsional spring, the one end and the loose -leaf contact of torsional spring, the other end and the contact of barrel inner wall, the loose -leaf touches with the brace table shoulder grafting under the effect of torsional spring, be in the closed condition, turn on pump reverse circulation during the salvage, the fluid makes the upwards upset of loose -leaf one side, the smallclothes junk gets into cylinder cavity along with the fluid, the loose -leaf resumes to the closed condition under the effect of torsional spring power after the termination of pumping, it realizes salvaging to block the junk, spread the barrel bottom has wear -resistant material for the cover mills and creeps into and introduce cylinder cavity with out -of -shape smallclothes junk, and it is high to have the success rate of salvage, safe and reliable's characteristics.