Patent application number | Description | Published |
20140131100 | ELECTRONICALLY ACTIVATED JARRING WITH TRAVELING RELEASE - An impact apparatus conveyable in a tool string via conveyance means within a wellbore. The impact apparatus comprises a first portion, including a first interface coupled with a first tool string component, a first engagement feature, and a first impact feature. The impact apparatus also comprises a second portion, including a second interface coupled with a second tool string apparatus, a second engagement feature in selectable engagement with the first engagement feature, and a second impact feature positioned to impact the first impact feature in response to disengagement of the first and second engagement features and a tensile force applied across the tool string by the conveyance means. A release member positionable between first and second positions in response to a signal carried by the conveyance means prevents disengagement of the first and second engaging features when in the first position but not the second position. | 05-15-2014 |
20140196911 | ELECTROMAGNETICALLY ACTIVATED JARRING - An impact apparatus conveyable in a tool string within a wellbore comprises a mandrel, a first impact feature, and a latch pin retainer encircling an end of the mandrel. A release sleeve encircles a portion of the latch pin retainer and includes a radial recess. Latch pins retained by the latch pin retainer are slidable into and out of the radial recess, and prevent disengagement of the mandrel end from the latch pin retainer when not extending into the radial recess. A release member electromagnetically causes relative translation of the latch pin retainer and the release sleeve, including aligning the latch pins with the radial recess and thereby permitting the disengagement. A second impact feature is positioned to impact the first impact feature in response to the disengagement when the impact apparatus is under tension. | 07-17-2014 |
20150027729 | WIRELINE ROLLER STANDOFF - Apparatus comprising a gripper operable to grip a cable extending between the Earth's surface and a downhole tool, wherein the downhole tool is suspended in a wellbore that extends from the Earth's surface to one or more subterranean formations. A body is assembled to the gripper. A plurality of rolling elements are each rotatably coupled to the body and operable to rotate relative to the body in response to contact with a sidewall of the wellbore as the body is translated along the wellbore. The body and the plurality of rolling elements collectively rotate relative to the gripper and, thus, the cable. | 01-29-2015 |
20150047854 | ELECTRICAL BULKHEAD CONNECTOR - A bulkhead connector assembly for assembly within a downhole tool to isolate a dry side of the downhole tool from a fluid side of the downhole tool and to allow electrical communication therebetween. The bulkhead connector assembly comprises a bulkhead comprising holes extending therethrough, wherein the bulkhead is adapted to form a fluid seal against an inside surface of the downhole tool. Terminals extend through the bulkhead, wherein an end of each terminal is in electrical communication with one of a plurality of electrical wires. Boots each extend about the end of a corresponding one of the terminals. A retaining block has holes each receiving one of the boots. A housing positioned around the retaining block is coupled to the bulkhead, thus positionally fixing the retaining block relative to the bulkhead. | 02-19-2015 |
20150176357 | Impact Sensing During Jarring Operations - A jarring tool operable for coupling within and generating an impact imparted to a downhole tool string. The jarring tool includes an upper housing, a lower housing, and a shaft coupled with the lower housing and extending into the upper housing. The upper housing moves axially relative to the lower housing along the shaft. The jarring tool also includes an accelerometer for detecting acceleration caused by an impact generated by movement of the upper housing away from the lower housing until corresponding impact features of the upper and lower housings collide. | 06-25-2015 |
20150226037 | DOWNHOLE ROLLER - An apparatus comprising a housing to be coupled to an end of a downhole tool, a member rotatably coupled to the housing, and first and second arms extending from the member. A first wheel is rotatably coupled between the first and second arms, a second wheel is rotatably coupled with the first arm opposite the first wheel, and a third wheel is rotatably coupled with the second arm opposite the first wheel. The first, second, and third wheels independently rotate relative to the first and second arms, and collectively rotate with the member relative to the housing. | 08-13-2015 |
20160084013 | Downhole Tool String Buoyancy Apparatus - A buoyancy apparatus operable for connecting to a downhole tool string conveyable within a wellbore extending into a subterranean formation. The buoyancy apparatus comprises a mandrel having an axially extending bore, a first connector disposed at a first end of the mandrel and operable for connecting the buoyancy apparatus to a first portion of the downhole tool string, and a second connector disposed at a second end of the mandrel and operable for connecting the buoyancy apparatus to a second portion of the downhole tool string. A shell extends around the mandrel to define an annular space between the shell and the mandrel. A buoyant material is retained within in the annular space. | 03-24-2016 |
20160102515 | Hydraulic Impact Apparatus and Methods - A hydraulic jar coupled between opposing first and second portions of a downhole tool string. The hydraulic jar includes a housing comprising a shoulder protruding radially inward from an internal surface of the housing, a shaft disposed within the housing, a piston fixedly positioned about the shaft and fluidly sealed against the shoulder, and a pressure relief device. The housing and the shaft move axially relative to each other and the shoulder axially interposes first and second portions of an annulus formed between the shaft and the housing. The pressure relief device controls fluid flow from the first annulus portion to the second annulus portion based on a pressure of the fluid in the first annulus portion relative to a set pressure of the pressure relief device. | 04-14-2016 |
20160102516 | Hydraulic Impact Apparatus and Methods - A hydraulic jar coupled between opposing first and second portions of a downhole tool string. The hydraulic jar includes a housing comprising a shoulder protruding radially inward from an internal surface of the housing, a shaft disposed within the housing, a piston fixedly positioned about the shaft and fluidly sealed against the shoulder, and a pressure relief device. The housing and the shaft move axially relative to each other and the shoulder axially interposes first and second portions of an annulus formed between the shaft and the housing. The pressure relief device controls fluid flow from the first annulus portion to the second annulus portion based on a pressure of the fluid in the first annulus portion relative to a set pressure of the pressure relief device. | 04-14-2016 |