Grant Prideco, Inc.

Seabox As

Well Processing As

Helge Lunde

David Pinchin

A system for disinfecting and removing biological material from water to be injected into an injection well in a water body is described; the system includes: at least one apparatus for the gravitational precipitation of particles from water, which is connected, in terms of fluid, to a source of untreated water and to the injection well; and an apparatus for the addition of an oxidant for the disinfection of water, which is connected in terms of fluid to the apparatus for the gravitational precipitation of particles, a source of untreated water and to the injection well such that the apparatus for the gravitational precipitation of particles is positioned downstream relative to the apparatus for the addition of an oxidant for disinfection. The disclosure also relates to a method for disinfecting and removal of biological material from injection water.

System and method for disinfecting and removing biological material from water to be injected in an underwater injection well

Technical system ('), method and uses for dosing of at least one liquid treatment means () into injection water () to an injection well (), wherein the technical system (&#x2032;) comprises: &#x2014;an underwater line (&#x2032;) for transport of the injection water () from a shipment site () for the injection water (); and &#x2014;at least one liquid-tight storage unit () containing the at least one liquid treatment means (). The distinctive characteristic is that the at least one storage unit () is structured as a volumetrically flexible unit; &#x2014;wherein said storage unit () is placed under water (); and &#x2014;wherein said storage unit () is connected, in a flow-communicating manner, to the underwater line (&#x2032;) for dosing of liquid treatment means () into the injection water () to the injection well ().

Technical system, method and uses for dosing of at least one liquid treatment means into injection water to an injection well

A method and a device () for destruction of organic material in injection water for an injection well (), in which a means () for introduction of water in the injection well (), and at least one electrochemical cell () with associated operating means are used for in situ electrolytic generation from water of at least short-lived, free hydroxyl radicals. The distinctive characteristic of the invention is that it comprises the following steps: (A) to connect the at least one electrochemical cell () to the injection well (); and (B) by means of said operating means, to conduct the injection water through said cell () for in situ generation of at least free hydroxyl radicals from the injection water, insofar as free hydroxyl radicals immediately destruct organic material that they engage in the injection water. The invention also comprises use of water, which is to be injected into an injection well (), as a source material for in situ electrolytic generation of said hydroxyl radicals for immediately destruction of organic material in the injection water.

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Sandnes, Norway

Helge Lunde