Abstract: A drilling fluid manager receives measurements of drilling fluid data over a period of time. The drilling fluid manager analyzes the time-series drilling fluid data to diagnose a contaminant type, contaminant concentration, and a rate of change of contaminant concentration. The drilling fluid manager develops a treatment plan with a treatment type, a treatment mass, and a treatment schedule for the contaminant type.

Abstract: A drilling fluid for use when drilling a borehole includes solid polymeric objects as a lost circulation additive. The objects have an overall size extending at least 0.5 mm in each of three orthogonal dimensions have a shape such that each object has one or more edges, points or corners and/or comprises a core portion with a plurality of projections which extend out from the core portion. The objects may be moulded, 3D-printed or chopped from larger pieces of polymer by granulating machinery. Shapes with edges, points, corners or projections assisting the objects in lodging within and bridging a fracture encountered or formed while drilling.

Abstract: A fluid used in a borehole containing suspended solid objects made by an additive manufacturing process. An additive process of solidifying a liquid composition at a succession of selected locations within a workspace, in accordance with a digital design allows a wide variety of shapes to be made. The fluid may be a drilling fluid or a borehole treatment fluid used prior to cementing and the objects may act, possibly in conjunction with other solids, to block loss of fluid into fractures in the formation around the borehole.