DRILLING & PRODUCTION ENGINEERING TECHNOLOGY RESEARCH INSTITUTE OF CNPC CHUANGQING DRILLING EXPLORATION COMPANY
发明人:
Chen Li,Chen Xiaobin,Hu Pan,Lv Juan
申请号：
US201214383555
公开号：
US9631431(B2)
申请日:
2012.04.17
申请国别(地区):
美国
年份:
2017
代理人:
摘要：
A WD sidewall coring tool includes: an outer cylinder set (34); a retrieving mechanism (35); a drilling sealer mechanism (36); a power mechanism (37); and a coring mechanism (38); wherein the outer cylinder set (34) includes a stabilizer (1), a limiting connector (22), and a turning connector (23) connected in sequence; wherein the retrieving mechanism (35) includes a retrieving cylinder (39), a retrieving head set (40), and a steel rope (33); wherein the drilling sealer mechanism (36) includes a connecting rod (28), a universal joint (24), a plug sleeve (29), and a sealing plug (30); wherein the power mechanism (37) includes a flat thrust bearing (17), a screw stator (18), a screw rotor (19), a limiting piston (20), and a first spring (21); wherein the coring mechanism (38) includes a coring cylinder (25), a core grabber (26), and a coring bit (27).
