Sigra provides a suite of consulting services for drilling and completion design that includes directional holes.
It also provides a cementing service. While this is used principally to install Sigra’s transducers in boreholes it may also be used to cement casing.
Drilling Mud Rheology
Sigra has a large size rotational viscosimeter which behaves in a hydraulically similar manner to the typical small units.
Drilling Mud Design
Sigra has a computer simulator that models the absolute pressure in a borehole along its length due to fluid flow.
Borehole Fluid Mechanics and Mud Design
It is important to achieve the correct hole cleaning, to reduce friction and to minimise formation damage (permeability loss around the borehole).
Well Control Procedures
Sigra manufactures, sells and uses its own annular blow out preventers in coal mining and coal seam gas applications.
Sigra designs hydrofracture systems for the purpose of stimulating flow from tight formations, including coal seams and other tight reservoirs.
Cementing — Grouting
Sigra have their own cementing equipment which is regularly used for transducer installation in boreholes and may be used to cement casing in place.