Abstract: In accordance with embodiments of the present disclosure, systems and methods for gathering corrosion data during a drill stem test (DST) performed in a wellbore extending through a subterranean formation are provided. Such systems include a specialized tool that may be run into the wellbore on a DST tubular string to perform corrosion measurements during the DST. This corrosion tester tool (CTT) may include a number of material coupons disposed therein for exposure to formation fluids routed through the CTT and the DST tubular string. The CTT may hold material coupons of several different materials that could potentially be used to form production tubing or other production equipment needed for well completion operations. After the different material coupons are exposed to the formation fluid via the CTT, the material coupons may be inspected to determine which material should be used to form the production tubing/equipment for that particular well.

Abstract: A pressure responsive downhole tool comprises a power piston pressure relief valve that is selectively activated and deactivated to allow pressure-related operations to be conducted. The pressure relief valve will not open until the power piston is activated, which also requires the operating element (ball valve, for example) to be opened, thereby avoided situations in which the ball valve is inadvertently placed in the Lock Open position.

Abstract: Certain aspects and features of the present invention are directed to a safety joint that can be disposed in a wellbore through a fluid-producing formation. The safety joint can include a body configured to be disposed in the wellbore, a primary retention mechanism, a secondary retention mechanism, and a time delay mechanism. The primary retention mechanism can be coupled to the body and can prevent the actuation of the safety joint. The secondary retention mechanism can be coupled to the body and can prevent the actuation of the safety joint in response to the primary retention mechanism allowing the actuation of the safety joint. The time delay mechanism can generate a time delay between the primary retention mechanism allowing the actuation of the safety joint and the secondary retention mechanism preventing the actuation of the safety joint.

Abstract: A downhole apparatus for use in a wellbore includes a housing having at least one passage or cavity capable of receiving a fluid. The downhole apparatus further includes an orifice in fluid communication with the passage or cavity. A viscosity-altering member is positioned in proximity to the orifice and is capable of being activated to change the viscosity of the fluid and thus a rate at which the fluid is able to pass through the orifice.

Abstract: A system and method utilizing a painted joint simulator to reduce the time required to conduct a dummy run in order to space out subsea test equipment within a blow-out preventer. In certain embodiments, a heavy weight fluid is injected into a chamber of the joint in order to assist in its downhole descent speed. In other embodiment, a high pressure fluid is injected into a second chamber of the joint in order to force the heavy weight fluid out of the joint in order to assists in the assent back to the surface. Other embodiments include an umbrella assembly that assists in the descent or assent of the painted joint.

Abstract: A system and method to determine and adjust positioning of a subsea test tree (“SSTT”) within a blowout preventer (“BOP”), the system including an SSTT, at least one sensing mechanisms to detect the position of one or more BOP rams and a fluted hanger. Once the assembly is deployed, the ram positions are detected and the position of the fluted hanger is adjusted while deployed to accordingly adjust the spacing between the SSTT and the fluted hanger, thereby eliminating the need of a dummy run. Another system and method improves a dummy run by providing a lightweight joint and dummy hanger deployed on a line (e.g., wireline, slickline, etc.). Through the use of a line and the lightweight of the joint and dummy hanger, the dummy run operation is conducted quickly and efficiently.

Abstract: Techniques for communicating with a downhole tool include generating a transmission from a terranean surface through a portion of a well system, where the transmission includes a command to a downhole tool in a first communication type; translating the command from the first communication type to a second communication type different than the first communication type; transmitting the command in the second communication type through another portion of the well system; and performing an operation with the downhole tool based on the command.

Abstract: A downhole valve system includes a downhole valve positionable in a wellbore and a downhole valve actuator coupled to the downhole valve. An annulus is defined between the downhole valve and the wellbore. The downhole valve actuator includes a pressure chamber that encloses a pressurized fluid at a particular pressure and a breakable member. The downhole valve actuator is adjustable to a first position to close the downhole valve when the particular pressure is greater than an annulus pressure at a first pressure in the annulus, and the downhole valve actuator is adjustable to a second position to lock the downhole valve in an open position independent of the relative values of the particular pressure and the annulus pressure, with the annulus pressure set at a second pressure greater than the first pressure to break the breakable member.

Abstract: A configurable metering cartridge includes a body having a tortuous pathway between an inlet and an outlet, and the tortuous pathway includes a plurality of restrictors. At least one valve is in fluid communication with the tortuous pathway and is selectively positionable to allow or prevent fluid flow through one or more of the plurality of restrictors.

Abstract: A rotationally activated downhole well valve for connection in a tubing string is disclosed that can be repeatedly opened and closed selectively to place the tubing string in communication with the annulus. The valve is moved between the closed position and the open position by rotating the string in the first direction.

Abstract: A method of making a downhole servicing tool comprising explosively welding a corrosion resistant material to a corrodible surface of the downhole servicing tool to yield a coated surface, wherein the coated surface comprises an explosively-welded corrosion resistant material.

Abstract: An apparatus for use in a wellbore having a housing having at least one chamber capable of receiving a fluid, a sealed annular volume, and a non-electronic pressure sensor disposed in the sealed annular volume. The non-electronic sensor includes a sealed, compressible container. Positioned within the sealed, compressible container are first and second magnets that are separated by a first distance when a fluid within the sealed annular volume is at a first pressure. When the fluid in the sealed annular volume is at a second pressure, the first and second magnets are separated by a second distance.

Abstract: A downhole apparatus for use in a wellbore includes a housing having at least one passage or cavity capable of receiving a fluid. The downhole apparatus further includes an orifice in fluid communication with the passage or cavity. A viscosity-altering member is positioned in proximity to the orifice and is capable of being activated to change the viscosity of the fluid and thus a rate at which the fluid is able to pass through the orifice.

Abstract: An apparatus for use in a wellbore having a housing having at least one chamber capable of receiving a fluid, a sealed annular volume, and a non-electronic pressure sensor disposed in the sealed annular volume. The non-electronic sensor includes a sealed, compressible container. Positioned within the sealed, compressible container are first and second magnets that are separated by a first distance when a fluid within the sealed annular volume is at a first pressure. When the fluid in the sealed annular volume is at a second pressure, the first and second magnets are separated by a second distance.

Abstract: A pressure responsive downhole tool comprises a threaded shearable retaining mechanism which performs the tension sleeve or shear pin function. The threaded shearable retaining mechanism comprises a pin and box thread that shears upon application of a predetermined pressure which may be adjusted based upon the amount of thread engagement. The pin thread may comprise indicators to indicate which thread engagement corresponds to what shear value. A keystone thread design may be utilized such that the thread would be retained along the threaded connection and not become lost in the well. Thus, the present invention allows for each pressure responsive tool to be custom tailored for a specific job.

Abstract: A configurable metering cartridge includes a body having a tortuous pathway between an inlet and an outlet, and the tortuous pathway includes a plurality of restrictors. At least one valve is in fluid communication with the tortuous pathway and is selectively positionable to allow or prevent fluid flow through one or more of the plurality of restrictors.

Abstract: A pressure responsive downhole tool includes a bi-directional collet utilized in conjunction with a pressure retaining chamber to control a ball valve utilizing a change in wellbore annulus pressure. Without substantially altering the pressure change between various operative functions, the tool can utilize the rate of pressure increase/decrease to drive the tool to different configurations. Initially, a pressure increase is utilized to engage the operation mechanism of a ball valve. Subsequently, the pressure increase can be utilized to open and close the ball valve. By varying the rate of the pressure increase and/or decrease, the position of the ball valve when the annulus pressure is bled off can be controlled, thereby permitting the ball valve to either closed when annulus pressure is decreased or remain locked-open when the annulus pressure is decreased.

Abstract: A system and method utilizing a painted joint simulator to reduce the time required to conduct a dummy run in order to space out subsea test equipment within a blow-out preventer. In certain embodiments, a heavy weight fluid is injected into a chamber of the joint in order to assist in its downhole descent speed. In other embodiment, a high pressure fluid is injected into a second chamber of the joint in order to force the heavy weight fluid out of the joint in order to assists in the assent back to the surface. Other embodiments include an umbrella assembly that assists in the descent or assent of the painted joint.

Abstract: A rupture disc assembly having a secondary seal positioned over the coupling area between the rupture disc and the tool housing. The secondary seal may be, for example, sealing tape, an o-ring, liquid sealant, metallic sealing tape, etc., or a combination of two or more of these elements.

Abstract: A downhole tester valve (100) includes a housing assembly (106) and a mandrel assembly (172, 174) that define therebetween an operating fluid chamber (176), a biasing fluid chamber (184) and a power fluid chamber (180). A valve assembly (126) disposed within the housing assembly (106) is operable between open and closed positions. A piston assembly (146) is operably associated with the valve assembly (126) such that annulus pressure entering the power fluid chamber (180) pressurizes operating fluid in the operating fluid chamber (176) which acts on the piston assembly (146) to shift the valve assembly (126) from the closed position to the open position and such that predetermined travel of the piston assembly (146) opens a bypass passageway (162) for the pressurized operating fluid to charge biasing fluid in the biasing fluid chamber (184), thereby enabling closure of the valve assembly (126) upon reducing annulus pressure by a predetermined amount.