Systems and Methods for Characterizing a Spatial Frequency of Interface Regions within a Subterranean Formation
    3.
    发明申请
    Systems and Methods for Characterizing a Spatial Frequency of Interface Regions within a Subterranean Formation 审中-公开
    用于表征地层内界面区域的空间频率的系统和方法

    公开(公告)号:US20160146003A1

    公开(公告)日:2016-05-26

    申请号:US14830777

    申请日:2015-08-20

    IPC分类号: E21B49/00 G01V11/00 E21B7/00

    CPC分类号: G01V11/002 E21B44/00

    摘要: Systems and methods for characterizing a spatial frequency of interface regions within a subterranean formation. A first method may include drilling a wellbore with a drilling assembly and measuring a downhole parameter during the drilling. The downhole parameter may be indicative of a lithology of a portion of the subterranean formation that is proximal to the drilling assembly. The first method also may include calculating an information entropy of the downhole parameter and characterizing the spatial frequency of the interface regions based upon the information entropy. A second method may include calculating the information entropy as a function of distance within a first wellbore and characterizing the spatial frequency of the interface regions. The second method also may include drilling a second wellbore within the subterranean formation and regulating the drilling based upon the spatial frequency of the interface regions. The systems include systems that perform the methods.

    摘要翻译: 用于表征地层内界面区域的空间频率的系统和方法。 第一种方法可以包括用钻井组件钻井井并在钻井期间测量井下参数。 井下参数可以指示靠近钻井组件的地下地层的一部分的岩性。 第一种方法还可以包括基于信息熵计算井下参数的信息熵和表征接口区域的空间频率。 第二种方法可以包括计算作为第一井筒内的距离的函数的信息熵并表征界面区域的空间频率。 第二种方法还可以包括在地层内钻第二井眼,并且基于界面区域的空间频率来调节钻井。 系统包括执行方法的系统。

    Method of Forming Directionally Controlled Wormholes in a Subterranean Formation
    4.
    发明申请
    Method of Forming Directionally Controlled Wormholes in a Subterranean Formation 审中-公开
    在地层形成定向控制的蠕虫的方法

    公开(公告)号:US20150345267A1

    公开(公告)日:2015-12-03

    申请号:US14693428

    申请日:2015-04-22

    摘要: A method for forming extended wormholes in a subsurface formation comprising locating producer wells, injection wells, and guard wells in a field; determining a flux rate for a formation-dissolving fluid such as an acid, the flux rate being dependent upon different variables including the composition of the rock matrix making up the subsurface formation and the type of acid selected; injecting a guard fluid into the subsurface formation, through at least one guard well to form designed pressure boundaries and injecting the acid into the formation at a rate to reach the determined flux rate and thereby forming an extended network of wormholes through the subsurface formation in a defined direction or plane, with or without guard wells.

    摘要翻译: 一种用于在地下地层中形成延伸的虫洞的方法,包括在现场定位生产井,注入井和保护井; 确定诸如酸的地层溶解流体的通量速率,通量速率取决于包括构成地下地层的岩石基质的组成和选择的酸的类型的不同变量; 通过至少一个防护井将防护流体注入到地下地层中,以形成设计的压力边界,并以达到所确定的通量速率的速率将酸注入地层,从而通过地下地层形成延伸的虫洞网络 定义的方向或平面,有或没有保护井。

    Systems and methods for characterizing a spatial frequency of interface regions within a subterranean formation

    公开(公告)号:US10302812B2

    公开(公告)日:2019-05-28

    申请号:US14830777

    申请日:2015-08-20

    IPC分类号: G01V11/00 E21B44/00

    摘要: Systems and methods for characterizing a spatial frequency of interface regions within a subterranean formation. A first method may include drilling a wellbore with a drilling assembly and measuring a downhole parameter during the drilling. The downhole parameter may be indicative of a lithology of a portion of the subterranean formation that is proximal to the drilling assembly. The first method also may include calculating an information entropy of the downhole parameter and characterizing the spatial frequency of the interface regions based upon the information entropy. A second method may include calculating the information entropy as a function of distance within a first wellbore and characterizing the spatial frequency of the interface regions. The second method also may include drilling a second wellbore within the subterranean formation and regulating the drilling based upon the spatial frequency of the interface regions. The systems include systems that perform the methods.