公开(公告)号：US20180112503A1

公开(公告)日：2018-04-26

申请号：US15299978

申请日：2016-10-21

申请人： WEATHERFORD TECHNOLOGY HOLDINGS, LLC

发明人： William C. LANE ,  Douglas HEBERT ,  John STACHOWIAK, JR.

IPC分类号： E21B43/12 ,  E21B34/06

CPC分类号： E21B43/126 ,  E21B34/06 ,  E21B43/127 ,  E21B2034/002 ,  F04B19/22 ,  F04B47/02 ,  F04B47/026 ,  F04B53/143 ,  F04B53/20

摘要： A pump can include a plunger and a barrel, at one stroke extent flow being substantially restricted between the plunger and the barrel at spaced apart positions and a plunger interior passage in filtered communication with a fluid chamber between the positions, and at an opposite stroke extent the fluid chamber being in communication with the standing valve. A method can include displacing a plunger in one direction, thereby receiving filtered liquid into a fluid chamber, and b) displacing the plunger in an opposite direction, thereby transferring the liquid to a barrel interior passage. A system can include an actuator that reciprocates a rod string, and a pump including a plunger with a traveling valve, a barrel with a standing valve, and a filter that filters liquid which flows from a tubing string to a compression chamber disposed between the traveling valve and the standing valve.

公开(公告)号：US20190264549A1

公开(公告)日：2019-08-29

申请号：US16411452

申请日：2019-05-14

申请人： WEATHERFORD TECHNOLOGY HOLDINGS, LLC

发明人： William C. LANE ,  Douglas HEBERT ,  John STACHOWIAK, JR.

IPC分类号： E21B43/12 ,  F04B47/02 ,  E21B34/06

摘要： A pump can include a plunger and a barrel, at one stroke extent flow being substantially restricted between the plunger and the barrel at spaced apart positions and a plunger interior passage in filtered communication with a fluid chamber between the positions, and at an opposite stroke extent the fluid chamber being in communication with the standing valve. A method can include displacing a plunger in one direction, thereby receiving filtered liquid into a fluid chamber, and b) displacing the plunger in an opposite direction, thereby transferring the liquid to a barrel interior passage. A system can include an actuator that reciprocates a rod string, and a pump including a plunger with a traveling valve, a barrel with a standing valve, and a filter that filters liquid which flows from a tubing string to a compression chamber disposed between the traveling valve and the standing valve.