Abstract: A fracturing tool features spaced releasable packers with an outlet in between. The housing has relatively moving components for opening the frac port between the packers with weight set on the lower packer. Once the frac port is opened the upper packer is set and the pumping begins. The upper packer can be released so that tension can be pulled on the lower packer to close the frac port and open a through passage in the housing. In one embodiment the through passage can be located above the lower packer to a sand jet perforator to clean debris away from the lower packer if it is difficult to release the lower packer or to abrasively perforate through a tubular. In another embodiment the housing outlet can be below bottom packer to perform a treatment further downhole or to operate another tool. The straddle tool can be run in on coiled tubing.

Abstract: An indicating tool includes a mandrel including a support, an indicator housing surrounding the mandrel, and a member movable radially with respect to the housing. The mandrel is movable longitudinally with respect to the indicator housing, and the indicator housing is at least substantially rotationally locked with respect to the mandrel. The member is engageable with an inner profile of an outer tubular in which the indicating tool is employed, and the member has a substantially helical side. The member is movable radially inward towards the mandrel when the support is longitudinally displaced from the member, and the member is blocked from movement radially inwards when the support is longitudinally aligned with the member.

Abstract: An apparatus for use in a wellbore is disclosed that in one non-limiting embodiment includes a mandrel having a recess on a lower section thereof, a packing element around the mandrel, wherein the packing element provides a seal between the apparatus and the wellbore when the packing element is expanded radially outward from the mandrel; and a threaded member having a threaded outer surface placed around the lower section of the mandrel, and wherein strength of the threaded member is greater than the strength of the lower section of the mandrel. The apparatus may further include a guide member threaded on the threaded member to provide support to the mandrel. The apparatus may be utilized as a frac plug and a bridge plug.

Abstract: A seat assembly includes a hollow frustocone; a slip subassembly interactive with the frustocone to anchor the frustocone in place during use. A seal disposed at the frustocone to receive a plug and upon receipt of the plug seal the plug to the frustocone and to a tubular structure in which the frustocone is anchored during use. A method for treating a borehole.

Abstract: A check valve has a valve member flexibly attached to a seat with resilient members that fold in response to flow above a predetermined value to shut the valve. The flexibly extending members store potential energy that is released to separate the valve member from the seat when the pressure applied against the seated valve member declines to the point that the potential energy stored in the flexible members is able to move the valve member off the seat. The valve assembly including the valve member, the seat and the flexible members can be a common material, or can be all one or more nonmetallic materials or involve composites or other easily drilled materials that are compatible with the operating conditions of pressure differential, temperature and composition of the well fluid. The check valve assembly can be pushed with pressure when closed to operate a subterranean tool.

Abstract: A check valve has a valve member flexibly attached to a seat with resilient members that fold in response to flow above a predetermined value to shut the valve. The flexibly extending members store potential energy that is released to separate the valve member from the seat when the pressure applied against the seated valve member declines to the point that the potential energy stored in the flexible members is able to move the valve member off the seat. The valve assembly including the valve member, the seat and the flexible members can be a common material, or can be all one or more nonmetallic materials or involve composites or other easily drilled materials that are compatible with the operating conditions of pressure differential, temperature and composition of the well fluid. The flexible members resist valve member rotation relative to a seat during milling.

Abstract: A ball is retained behind a circular array of collet fingers to be pushed out through the collets with a spring biased piston that is initially locked when run in the hole. The lock mechanism is a link that holds a potential force in the main spring. One end of the link is held by an acceleration or deceleration responsive retainer. The retainer has a conforming stop surface to a stop surface on the link. Sudden relative movement caused by acceleration of the housing allows the retainer that is flanked by opposed springs to move away from the stop surface or surfaces on the link. The link is an array of spaced fingers that can radially flex. The radial flexing combines with the power of the main spring to propel the piston against the ball for a release of the ball. A fracturing operation then ensues.

Abstract: An apparatus for performing a wellbore operation with a plug includes a plug seat assembly that has a plug seat having a plurality of seat segments, at least one seat segment having a plug seat rack, and each plug seat segment having an inner surface contacting the plug. The plug seat assembly also has a collet having a collet rack and a locking ratchet, the collet rack incrementally radially disengaging from the plug seat rack during relative rotation between the collet and the plug seat, and a mandrel having a mandrel rack complementary to the locking ratchet. The plug seat assembly is positioned in a wellbore and a plug radially displaces the at least one plug seat segment of the plug seat assembly. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the general subject matter of the technical disclosure.

Abstract: A selective locking apparatus for an indicating tool, the selective locking apparatus includes a mandrel having a rotational collet finger receiving area including a plurality of unlocked-position tracks alternatingly arranged with a plurality of locked-position detents. A rotational collet rotatably supported on the mandrel, the rotational collet including a j-track on an outer periphery of the rotational collet, the rotational collet further including a plurality of rotational collet fingers having heads engageable within the rotational collet finger receiving area of the mandrel.

Abstract: A ported mandrel additively manufactured with at least two different materials. A unitary ported mandrel includes a mandrel body of a base material; one or more ports including an erosion resistant material; and one or more return pathways. A method for making a unitary ported mandrel for a downhole fracturing operation.