A one-trip screen installation and cleaning system includes a tubular supporting a screen. The tubular has an inner surface defining a flow bore positioned radially inwardly of the screen. At least one actuator extends radially inwardly from the inner surface and is positioned axially offset relative to the screen. The at least one actuator includes at least one actuator surface. A wash pipe is arranged in the flow bore. The wash pipe includes a bypass valve including a selectively openable outlet port, a spray cleaning device arranged axially outwardly of the selectively openable outlet port, and an inflow control valve arranged between the selectively openable outlet port and the spray cleaning device.

Casing installation assemblies for installing a casing within a borehole, as well as systems and methods related thereto are disclosed. In an embodiment, the casing installation assembly includes a tubular string, an isolation sub coupled to a downhole end of the tubular string, and a diverter sub coupled to and positioned downhole of the isolation sub. In addition, the casing installation assembly includes a landing string coupled to the diverter sub and configured to be coupled to the casing. The isolation sub includes a valve assembly that is configured to selectively prevent fluid communication between the tubular string and the diverter sub.

The invention provides a fluid discharge apparatus (102) and a method of use. The apparatus (102) comprises a body (106) comprising an inlet (122) configured to receive fluid from a fluid source, and one or more fluid discharge ports (140). A valve arrangement (124) in the body (106) is operable to be cycled to provide an interrupted flow of fluid through the body (106). The valve arrangement (124) may be disposed in the body (106), and/or may be operable to be moved between a first condition in which fluid entering the body (106) from the inlet (122) is prevented from passing through the apparatus (102), and a second condition in which fluid is discharged through the one or more fluid discharge ports (140). The valve arrangement (124) may be operable to cycle between the first condition and the second condition to provide an interrupted flow of fluid through the body (106).

A bit saver assembly having an inner valve sleeve that actuates upon the weight-on-bit (WOB) of the drill bit exceeding a threshold value to overcome the countervailing force provided by a spring contained within the bit saver assembly and the internal flow pressure of the drilling fluid at the area of the inner valve sleeve. Actuation of the inner valve sleeve opens a fluid passage to the wellbore annulus resulting in a reduction of drilling fluid flow pressure and the stretch of the drill string thereby reducing WOB of the drill bit without operator assistance.

A desander assembly retrievably positionable in a tubing string including a fishing neck, a bypass tool, a stop assembly configured to retrievably mate with a portion of the tubing string, an outer tubular member, and an inner tubular member. The outer tubular member has at least one aperture extending. The inner tubular member is positioned in the outer tubular member to form an annulus and so a bore of the inner tubular member is in fluid communication with the bypass tool. The inner tubular member has at least one spiral protrusion extending outwardly from the sidewall to cooperate with an interior side of the outer tubular member to form a spiral channel. The bore of the inner tubular member receives reservoir fluid that passes into the annulus formed between the inner tubular member and the outer tubular member via the apertures of the outer tubular member.

An underbalanced drilling system is provided. A bottomhole assembly includes a drill bit drilling a wellbore in a formation underbalanced. The bottomhole assembly includes a telemetry sub. A telemetry component transmits signals in real-time between the telemetry sub of the bottomhole assembly and a controller on the surface. A drill string is coupled with the bottomhole assembly, and the drill string includes a plurality of drill collars. The drill collars form a channel through which drilling fluid flows from the surface to the bottomhole assembly. The drill string is inserted into the wellbore by a hydraulic work over unit. A continuous circulation component provides continuous circulation of the drilling fluid while a new drill collar is coupled to the drill string. The continuous circulation component substantially maintains a wellbore density at a predetermined density.

A rotor catch system includes a catch stem having a proximal end coupled to a rotor of a mud motor system and a distal end positioned within a sub housing of a drill string, a catch feature having a top portion and a spindle portion extending from the top portion and coupled to the distal end of the catch stem, a housing catch feature extending radially inward from an inner surface of the sub housing, and a catch bushing positioned between the top portion of the catch feature and the housing catch feature. The housing catch feature restrains axial movement of the catch bushing in the active catch state via contact between the catch bushing and the housing catch feature, and the catch bushing restrains axial movement of the catch feature in the active catch state via contact between the catch feature and the catch bushing.

A downhole drilling motor includes a motor housing having an inner bore and an outer surface. A power section includes a stator elastomer at least partially disposed within the inner bore of the motor housing. A bearing section includes an upper bearing at least partially disposed within the inner bore of the motor housing. The motor housing further includes an opening extending from the inner bore to the outer surface to provide a bypass fluid path for a fluid in the inner bore. The opening is disposed on the motor housing between a lower end of the stator elastomer and an upper end of the upper bearing. The bypass fluid path allows the downhole drilling motor to accommodate a higher flow rate of a fluid through the stator elastomer of the power section than through the upper bearing of the bearing section.

The disclosure provides for systems and methods for controlling fluid flow into a power generation section of a tool string. In one aspect, multiple flow kits are fluidly coupled with a turbine, and flow of fluid into the turbine is regulated by selectively opening valves coupled with the flow kits. In another aspect, a valve is fluidly coupled with the turbine, and flow of fluid through the valve and into the turbine is regulated by opening, partially opening, closing, or partially closing the valve in response to measured operational parameter data.

A downhole tool comprises a hollow body having a wall and a port in the wall, and a closing sleeve movable relative to the body to open and close the port. A seal is provided between the body and the sleeve and is configured to hold differential pressure. An isolation member may be deployed in the tool to isolate the seal from differential pressure and close the port. The isolation member may be deployed following initiation of a tool activation process, a successful outcome of the process being translating the closing sleeve and closing the port, and positioning the seal to hold a differential pressure. If it is detected that the outcome has not been achieved, the isolation member is deployed to isolate the seal from differential pressure and close the port.