Well treatment methods and fluids with GLDA salt

    公开(公告)号:US10233385B2

    公开(公告)日:2019-03-19

    申请号:US14753942

    申请日:2015-06-29

    Abstract: A well servicing fluid includes ingredients including a GLDA salt, a crosslinker, and a viscosifying agent that is not crosslinked by the crosslinker. A well treatment method includes forming a well servicing fluid with ingredients including a GLDA salt, a viscosifying agent, and a crosslinker, the GLDA salt containing a metal cation chelated with a GLDA anion. The well servicing fluid is inserted into a well in a formation. The method includes crosslinking the viscosifying agent and attaining a first viscosity of the well servicing fluid using the crosslinker. After the attaining of the first viscosity, viscosity of the well servicing fluid in the well is decreased to a second viscosity less than the first viscosity by using the GLDA anion. The GLDA salt may be a GLDA calcium salt and the crosslinker may be a zirconium crosslinker.

    LATERAL SUPPORT FOR DOWNHOLE ELECTRONICS
    23.
    发明申请

    公开(公告)号:US20190055832A1

    公开(公告)日:2019-02-21

    申请号:US15628197

    申请日:2017-06-20

    Inventor: Andreas PETER

    CPC classification number: E21B47/011 E21B49/00 E21B49/08

    Abstract: Apparatus include a downhole tool comprising an outer member; and a probe body positioned inside the outer member; an electronics carrier positioned inside the probe body; and a lateral support system, including members cooperating to maintain a relative position of the electronics carrier with respect to the probe body, and a biasing member. The plurality of members may include an outer support ring having an axial passage therethrough for receiving the electronics carrier, the outer support ring having an inner surface; and an inner support ring within the probe body having an axial passage therethrough for receiving the electronics carrier, the inner support ring having an outer surface. The biasing member may be configured to urge a member of the plurality of members against an inner surface of the probe body by urging the outer surface of the inner support ring against the inner surface of the outer support ring.

    Decreasing foulant deposition on at least one surface by contacting the surface(s) with at least one protein

    公开(公告)号:US10196554B2

    公开(公告)日:2019-02-05

    申请号:US15266436

    申请日:2016-09-15

    Abstract: Corrosion and/or calcium scale deposition on a surface in contact with corrosion forming components and/or scale forming components within a subterranean formation may be decreased, prevented, and/or inhibited by contacting the surface with at least one protein. The protein(s) may be or include, but is not limited to, at least one aspein protein, at least one aspolin protein, at least one dentine protein, at least one DRICH-1 protein, at least one nacrein protein, at least one SMDT-1 protein, derivatives thereof, fragments thereof, mimetics thereof, and combinations thereof. The surface may be or include, but is not limited to a metal surface, a plastic surface, a ceramic surface, a painted surface, a coated surface, and combinations thereof.

    Constrained backscatter gamma ray casing and cement inspection tool

    公开(公告)号:US10185052B2

    公开(公告)日:2019-01-22

    申请号:US15383978

    申请日:2016-12-19

    Abstract: Methods, systems, devices, and products for estimating at least one parameter of interest of a volume of interest of an earth formation using nuclear radiation based measurements. Logging tools include a limited aperture collimated radiation beam source, detectors, and at least one processor configured to take measurements. The source is configured to emit a beam of radiation radially from the logging tool into an elongated volume of interest outside the wellbore such that the beam penetrates a plurality of zones of the volume of interest. Each zone represents a range of radial depths corresponding to a respective infrastructure component associated with the wellbore, such as nested tubulars. Each detector has a unique angle of detection and is configured to generate measurement information in response to spatially coherent backscattered gamma rays. Each detector is associated with scattering events at one of the plurality of zones.

    Mechanically Adjustable Inflow Control Device

    公开(公告)号:US20190003284A1

    公开(公告)日:2019-01-03

    申请号:US15639597

    申请日:2017-06-30

    Inventor: Stephen Coulston

    Abstract: An adjustable inflow control device features a mechanically rotatable sleeve that advances or retreats axially when rotated in opposed directions to cover or uncover a labyrinth flow path from an inlet to an outlet. When used for inflow the outlet is into a tubular string to a surface location. The more the sleeve is retracted away from the labyrinth path the less resistance to flow is offered and vice versa. Another way to mechanically alter the flow resistance is to have an outer housing with a spiral groove and an axially movable inner mandrel with another spiral groove. The mandrel can be axially advanced with rotation when connected with a thread. Advancing the mandrel so that there is more overlap between the spiral patterns increases resistance to a give flow rate and vice versa. A gap between the mandrel and housing allows the mandrel to rotate and translate.

    METHODS OF CONTROLLING FINES MIGRATION IN A WELL

    公开(公告)号:US20190002753A1

    公开(公告)日:2019-01-03

    申请号:US16072666

    申请日:2017-03-01

    Abstract: A method of treating a subterranean formation penetrated by a wellbore comprises: introducing into the subterranean formation a treatment fluid comprising a carbonate producing agent, urea, and a cation source; allowing a carbonate precipitate to form, the carbonate precipitate comprising a cation from the cation source and having a water solubility of less than about 0.1 g/100 mL at 25° C. and atmospheric pressure; and reducing or substantially preventing the passage of formation particles from the subterranean formation into the wellbore while allowing passage of formation fluids from the subterranean formation into the wellbore.

    Composite metallic elastomeric sealing components for roller cone drill bits

    公开(公告)号:US10151148B2

    公开(公告)日:2018-12-11

    申请号:US14605639

    申请日:2015-01-26

    Abstract: An earth boring bit has a bit body with a depending bearing pin, a cone rotatably mounted on the bearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deformable in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.

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