Abstract: Systems and methods for using stratigraphic heat maps to steer a well being drilled. Data from one or more offset wells can be provided to a computer system and used with data from a well being drilled to generate one or more stratigraphic heat maps during the drilling of the subject well. The stratigraphic heat maps can be displayed and used to determine the location of the wellbore relative to one or more geological formations, including one or more target formations or within a target formation. Based on the use of the heat maps and the location of the wellbore relative to a target, the drill plan can be adjusted or updated and/or one or more drilling parameters or operations may be adjusted to drill the wellbore, such as to drill the wellbore to the target or to maximize the length of the wellbore within a target zone.

Abstract: Systems and methods for using stratigraphic heat maps to steer a well being drilled. Data from one or more offset wells can be provided to a computer system and used with data from a well being drilled to generate one or more stratigraphic heat maps during the drilling of the subject well. The stratigraphic heat maps can be displayed and used to determine the location of the wellbore relative to one or more geological formations, including one or more target formations or within a target formation. Based on the use of the heat maps and the location of the wellbore relative to a target, the drill plan can be adjusted or updated and/or one or more drilling parameters or operations may be adjusted to drill the wellbore, such as to drill the wellbore to the target or to maximize the length of the wellbore within a target zone.

Abstract: Modular service unit (10A) comprising a pair of elongate light fitting EACH comprising a reflector housing (14) having one or more light tubes (24). Either a bridging plate, or an intermediate housing (26), is releasably attached to or supported by adjacent longitudinal side edges (34) of each reflector housing (14), and forms a structural part of an auxiliary service facility. The auxiliary service facility can include, for example, air conditioning ducts or diffusers, (17A), five alarm detectors, fire sprinklers with flexible pipe connections, speakers, security sensors, and secondary light fittings. A plurality of modular service units may be incorporated in a suspended ceiling.