公开(公告)号：US20150285041A1

公开(公告)日：2015-10-08

申请号：US14246779

申请日：2014-04-07

Applicant: Tundra Process Solutions Ltd.

Inventor： Kevin DANCEK

IPC: E21B43/12 ,  F04B47/04 ,  F04B47/02

CPC classification number: F04B49/065 ,  E21B43/126 ,  F04B47/04 ,  F04B49/20 ,  F04B2201/0201 ,  F04B2201/121

Abstract: An artificial lifting system is disclosed. The artificial lifting system comprises an elongated cylinder fixed to a base or ground. The elongated cylinder receives a piston rod axially movable therein. The piston rod engages a downhole rod pump for driving the rod pump reciprocating uphole and downhole to pump downhole fluid to the surface. A control unit controls the axial movement of the piston rod, and automatically adjust the system operation to adapt to drift of the top and bottom stop positions of the piston rod. In an alternative embodiment, the system further comprises a dump valve controlled by the control unit to prevent over-stroke. In another embodiment, the system further comprises a chemical injection unit for injecting treatment fluid to a wellbore under the control of the control unit.

Abstract translation: 公开了一种人造起重系统。 人造提升系统包括固定到基座或地面的细长圆柱体。 细长圆筒容纳可在其中轴向移动的活塞杆。 活塞杆接合井下杆泵，用于驱动往复式往上钻孔和井下的杆泵，将井下流体泵送到地面。 控制单元控制活塞杆的轴向运动，并自动调整系统运行以适应活塞杆顶部和底部停止位置的漂移。 在替代实施例中，系统还包括由控制单元控制的排放阀，以防止过冲程。 在另一个实施例中，系统还包括用于在控制单元的控制下将处理流体喷射到井筒的化学喷射单元。