One trip wellbore cleanup and setting a subterranean tool method

    公开(公告)号:US09879505B2

    公开(公告)日:2018-01-30

    申请号:US14687245

    申请日:2015-04-15

    CPC classification number: E21B37/00 E21B23/06 E21B33/12 E21B37/02

    Abstract: A one trip method of cleaning a portion of the borehole and then setting a tool such as a packer or a bridge plug locates the cleanup tools above the plug with a ported sub to allow circulation of loosened debris. The debris is directed uphole from above the plug and does not have to pass around the sealing element of the plug or through bypass ports in the plug body. The plug is then positioned in the cleaned portion and set. The cleaning tools are released from the set plug and brought to the surface. These tools could be used to clean the portion of the borehole where the tool is set or clean the entire section above the tool on the trip out of the borehole. Cleaning tools can be filter, scrapers both fixed and movable, magnets, brushes and associated tools that centralize the assembly for more effective operation.

    METHODS OF DESIGNING AND FORMING EARTH-BORING TOOLS USING A PLURALITY OF DEPTH OF CUT VALUES

    公开(公告)号:US20180023372A1

    公开(公告)日:2018-01-25

    申请号:US15724483

    申请日:2017-10-04

    CPC classification number: E21B41/0092 E21B10/00 G06F17/5086

    Abstract: Methods of designing an earth-boring tool are described, including calculating one or more performance parameters of the tool based on drilling conditions, a plurality of depth of cut values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of depth of cut values and a first set of values of other design variables, calculating the performance parameter based at least partially on a second set of values of the other design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of depths of cut. Related methods of forming an earth-boring tool are also described.

    Wedge Slip Travel Stop
    94.
    发明申请

    公开(公告)号:US20180023368A1

    公开(公告)日:2018-01-25

    申请号:US15586977

    申请日:2017-05-04

    Abstract: A T-shaped slip is retained in an opening of a slip ring to drive the slip in opposed directions to and away from the surrounding borehole wall along a cone. The slip ring and cone do not come together when the slip is engaged. The opening allows release of a lock ring first with the slip engaged followed by release of the slip from the borehole wall. The slip ring and cone come together during removal from the borehole. A travel stop on the axial slip movement is provided to prevent guides on the slip from exiting a track or dovetail on the cone when the slip ring and cone are in contact during removal of the plug or packer. Extension of the guide from the cone track can happen if the slip moves through an enlarged portion of the borehole. The travel stop prevents this.

    Devices and methods for detecting chemicals

    公开(公告)号:US09857498B2

    公开(公告)日:2018-01-02

    申请号:US14296802

    申请日:2014-06-05

    Abstract: Devices and methods for detecting chemicals are disclosed. A device configured for use in a wellbore includes a sensor including a quantum tunneling composite (QTC) material configured to exhibit a change in electrical resistance responsive to the sensor contacting a target chemical. The sensor includes electrical resistance measuring circuitry operably coupled to the QTC material and configured to measure the electrical resistance of the QTC material and output a sensor signal indicating the electrical resistance. A method comprises deploying the sensor into the wellbore, measuring the electrical resistance of the QTC material, and determining the presence of the target chemical responsive to detecting changes in the electrical resistance of the QTC material. Another method includes selecting at least one of the QTC material and an active material to interact with a target wellbore chemical to change the electrical resistance of the QTC material.

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