公开(公告)号：WO2003062596A1

公开(公告)日：2003-07-31

申请号：PCT/US2003/001744

申请日：2003-01-22

Applicant: WEATHERFORD/LAMB, INC.

Inventor： HOWARD, William, F. ,  LANE, William

IPC: E21B43/12

CPC classification number: E21B43/2406 ,  E21B43/129 ,  F04F1/08

Abstract: The present invention generally relates to an apparatus and method for improving production from a wellbore. In one aspect, a downhole pump for use in a wellbore is provided. The downhole pump includes two or more chambers (170) for the accumulation of formation fluids and a valve assembly (150) for filling and venting gas to and from the two or more chambers. The downhole pump further includes a fluid passageway (240) for connecting the two or more chambers to a production tube (135). In another aspect, a downhole pump including a chamber for the accumulation of formation fluids is provided. In another aspect, a method for improving production in a wellbore is provided. In yet another aspect, a method for improving production in a steam assisted gravity drainage operation is provided. Additionally, a pump system for use in a wellbore is provided.

Abstract translation: 本发明一般涉及一种用于改善从井眼产生的装置和方法。 在一个方面，提供了一种用于井眼的井下泵。 井下泵包括用于堆积地层流体的两个或更多个腔室（170）和用于向两个或多个腔室填充和排出气体的阀组件（150）。 井下泵还包括用于将两个或更多个室连接到生产管（135）的流体通道（240）。 在另一方面，提供了一种包括用于堆积地层流体的室的井下泵。 在另一方面，提供了一种用于改善井眼中的生产的方法。 在另一方面，提供了一种用于改善蒸汽辅助重力排水操作中的生产的方法。 另外，提供了用于井眼的泵系统。

公开(公告)号：EP1292770A2

公开(公告)日：2003-03-19

申请号：EP01940758.4

申请日：2001-06-18

Applicant: WEATHERFORD/LAMB, INC.

Inventor： LANE, William

IPC: F04C2/107

CPC classification number: F04C2/1071 ,  F04C2250/201

Abstract: The present invention provides an adjustable rotor (26) and/or stator (22), so that the interference fit and/or clearance can be adjusted. The rotor and/or stator are tapered to provide a difference in fit between the rotor and stator by longitudinal adjustment of their relative position. In one embodiment, the adjustment may occur while the PCP is mounted downhole in a wellbore. In another embodiment, the adjustment may occur automatically depending on sensor input of operating conditions of the PCP.