Superior Energy Services (SPN) USPTO patents

A filter sub which includes a tubular sub housing and a strainer insert.

An actuator sub for generating hydraulic pressure having a sub housing which includes (i) an outer surface, (ii) a main flow passage extending though the sub housing, and (iii) a wall space formed between the main flow passage and the housing outer surface.

A flow control valve sub including a tubular valve sub housing having a sub central passage and a valve cavity formed in a sidewall of the sub housing.

A downhole plug having a plug body which includes (i) a base cylinder with a first outward facing locking surface and a central bore formed there through, (ii) a single set of circumferentially spaced slip ramps formed on the base cylinder, and (iii) slip guides positioned between the slip ramps, the slip guides having a second inward facing locking surface.

A production casing string including a plurality of propellant sleeves positioned on an exterior of the production casing string, and each propellant sleeve includes a firing mechanism and a firing sleeve for selectively covering and uncovering the firing mechanism.