Thermal recovery well filling and sand prevention tool

• Main Authors: CHEN WEI, SONG QINGXIN, SUN XIUZHAO, WEI QINGCAI, LI CHANGYOU, MA DING, WANG BING, ZHANG XIJUAN, WANG YONG, KANG JIE
• Format: Patent
• Language: Chinese; English
• Published: 20.03.2018
• 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 invention discloses a thermal recovery well filling and sand prevention tool. The tool comprises a center tube, an overflowing outer cavity, a sealing sleeve, a slip mechanism, a leather cup and aconversion mechanism, wherein the outer side of the central tube is sleeved with the overflowing out...