Internal subsurface safety valve for rotating downhole pumps

    公开(公告)号:US10087713B2

    公开(公告)日:2018-10-02

    申请号:US14827518

    申请日:2015-08-17

    申请人: Marcel A. Grubert

    发明人: Marcel A. Grubert

    摘要: A subsurface safety valve and method for sealing an annulus within a tubular, including a valve housing having a first section having a hollow cylinder for receiving a piston, the hollow cylinder having a first portion, a second portion and a first circumferential ledge; a piston positioned within the hollow cylinder, the piston having a first end, a second end, a first radially extending circumferential land positioned therebetween, and a first reservoir for receiving a first fluid; a biasing element to assist in placing the valve in a sealed condition, the biasing element positioned between the first circumferential ledge of the hollow cylinder and the first radially extending circumferential land; and a flexible sealing member for selectively sealing the annular space when a hydraulic force is exerted thereupon.

    Method and system for geophysical modeling of subsurface volumes

    公开(公告)号:US09995844B2

    公开(公告)日:2018-06-12

    申请号:US14205031

    申请日:2014-03-11

    IPC分类号: G01V11/00

    CPC分类号: G01V11/00

    摘要: Method and system are described for modeling one or more geophysical properties of a subsurface volume (102). The present disclosure provides method of modeling the subsurface comprising obtaining one or more subsurface volumes and performing at least two operations (104) on the subsurface volumes. A graph of operations is determined (106) based on each of the at least two operations in which the graph of operations includes a description of each of the at least two operations and a flow path for the each of the at least two operations (108). The graph of operation is stored (110). A specific operation within the graph of operations may then be identified (112). An additional operation may be created and connected to the graph of operations at a node associated with the specific operation to provide an additional branch to the graph of operations (114).