PRESSURE SENSING PLUG FOR WELLHEAD/XMAS TREE

    公开(公告)号:US20210285318A1

    公开(公告)日:2021-09-16

    申请号:US17199076

    申请日:2021-03-11

    Abstract: The invention relates to the checking of pressure in various void or cavities of a wellhead or Xmas tree of an active hydrocarbon well. Pressure sensing plugs (51) are provided at various points in the wellhead/Xmas tree (50). Each plug incudes a pressure transducer (39) and associated electronics allowing the pressure to be read by a hand held reader device. Alternatively, the plugs may include a radio transmitter for transmitting sensed data to a monitoring system via a wife network or similar to a central control room on a hydrocarbon producing platform. In this way, the pressure at the various point in the wellhead/Xmas tree may be checked without exposing the cavity or void.

    MANAGEMENT OF SUBSEA WELLHEAD STRESSES

    公开(公告)号:US20210285317A1

    公开(公告)日:2021-09-16

    申请号:US17198819

    申请日:2021-03-11

    Abstract: The invention relates to a method and system for monitoring strain data on a subsea wellhead and associated tubing especially during a drilling or completion operation when the wellhead is connected via a riser to a drilling rig. The bending stresses on the wellhead assembly can be modelled and monitored, based on strain data from strain gauges attached to the conductor, surface casing and possibly also inner tubing. The strain gauges are located where maximum bending stresses occur, at around seafloor level. Data from the strain gauges is transmitted by radio to a receiver unit on the template, from which it may either be transmitted to the surface or stored and retrieved by divers or subsea vehicles.

    Enhanced kill of microorganisms
    455.
    发明授权

    公开(公告)号:US10925282B2

    公开(公告)日:2021-02-23

    申请号:US16399314

    申请日:2019-04-30

    Inventor: Gary Jenneman

    Abstract: A process is provided for the time dependent reduction and kill of cellular bacteria in a fluid by sequential exposure to nitrites and a low concentration of biocide. Oilfield water containing sulfate-reducing bacteria can be supplied with a timed sequential exposure of nitrite and biocide. The timed sequential addition of the biocide following exposure to the nitrite provides enhanced kill of the sulfate-reducing bacteria at concentrations of biocide that are lower than would be possible using simultaneous addition of these materials.

    PORTABLE ARTICULATING ULTRASONIC INSPECTION

    公开(公告)号:US20210041400A1

    公开(公告)日:2021-02-11

    申请号:US16985873

    申请日:2020-08-05

    Abstract: Methods of assessing internal features of oilfield equipment including elbows, connections, valves, branches, olets, and other structures include the methods and apparatus for determining the physical geometric boundaries of oilfield structures using an automated articulating arm with an external laser scanner and an ultrasonic probe.

    WAX DEPOSIT REMOVAL USING AQUEOUS SURFACTANT

    公开(公告)号:US20210002540A1

    公开(公告)日:2021-01-07

    申请号:US16921100

    申请日:2020-07-06

    Abstract: A method and system for removing wax deposits from a wellbore and other oil production and processing equipment using a wax removal surfactant having at least 1% alkyl polyglycoside (APG), at least 0.5% ethoxylated alcohol (AE) or alcohol ethoxysulfates (AES), and at least 1% saturated alcohol, and optionally comprising D-Limonene, wherein the wax removal surfactant solution forms a Winsor Type III or Type IV microemulsion with water and wax.

    SOLVENT INJECTION AND RECOVERY IN A LNG PLANT
    460.
    发明申请

    公开(公告)号:US20200340741A1

    公开(公告)日:2020-10-29

    申请号:US16861811

    申请日:2020-04-29

    Abstract: Implementations described and claimed herein provide systems and methods for processing liquefied natural gas (LNG). In one implementation, a solvent is injected into a feed of natural gas at a solvent injection point. A mixed feed is produced from a dispersal of the solvent into the feed of natural gas. The mixed feed contains heavy components. A chilled feed is produced by chilling the mixed feed. The chilled feed includes a vapor and a condensed liquid. The condensed liquid contains a fouling portion of the heavy components condensed by the solvent during chilling. The liquid containing the fouling portion of the heavy components is separated from the vapor. The vapor is directed into a feed chiller heat exchanger following separation of the liquid containing the fouling portion of the heavy components from the vapor, such that the vapor being directed into feed chiller heat exchanger is free of freezing components.

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