Abstract:
A slickline conveyed perforating method and apparatus is adapted to be disposed in an extremly small diameter cased borehole, especially during extreme overbalanced perforating conditions, and the apparatus includes one or more shock absorbed pressure and temperature measurement gauges adapted for measuring the pressure and temperature in the small diameter cased borehole before, during, and after the perforating operation. An "extremly small diameter" borehole is defined as a borehole which has a diameter that is always less than the diameter of any production tubing which would normally be inserted into the borehole.
Abstract:
A wellbore completion system utilizes casing conveyed devices (50) to establish a fluid communication path between a downhole formation (F) and the casing string (60). Extendible pistons (12) are mounted in the wall of the casing pipe string (60) and are extended toward contact with the downhole formation (F) after the casing (60) is set. Explosives (58, 72, 74) in the pistons are activated by a separately conveyed activation system (84, 89, 91, 93) which produces a pressure wave to detonate the explosives (58, 72, 74) and establish fluid communication between the casing (60) and formation (F).
Abstract:
A connector assembly attaches downhole tools to one another to form a tool string. The connector assembly includes male and female subs, each with latch ends that selectively latch to one another. Ends of the subs distal from their latch ends are configured for attachment to the downhole tools. A plug assembly is in one of the subs and a socket assembly is disposed in the other sub; the plug and socket assemblies mate with one another when the subs attach. Mating the plug and socket assemblies forms a signal communication path through the connector assembly so that adjacent tools are in signal communication. The plug and socket assemblies and male and female subs are annular and circumscribe a bore that extends axially through the connector assembly. Downhole tools that attach to opposing ends of the connector assembly are in communication through the bore in the connector assembly.
Abstract:
A frac plug for use in a plug and perf arrangement to within a wellbore. The frac plug includes a central mandrel and locking portion which can be set within the wellbore. A bypass port is disposed through the central mandrel and is unblocked to fluid flow during setting of the plug assembly. Thereafter, the central mandrel is axially shifted within the set locking portion to block fluid communication across the frac plug.
Abstract:
A squeeze packer (1) assembly incorporates a built-in setting tool which removes the need for a separate setting tool. The packer comprises a body comprising a mandrel (9), a shuttle sleeve (7), and a stinger (2) assembly which is lowered into the wellbore on the end of tubing (102). The shuttle sleeve is housed within the body and incorporates a latch device in the form of a collet comprising a plurality of resilient fingers (14) to releasably connect to the stinger. A ball seat (15) allows hydraulic setting of slips (3). Additional slips (4) can be set by applying tension on the tubing (fig 4). Once released, the stinger can open and close the shuttle sleeve by reciprocating in and out of the packer as many times as required during cementing operations.
Abstract:
A valve for use in a wellbore includes a housing including a housing port, a slidable closure member disposed in a bore of the housing and including a closure member port, and a seal disposed in the housing, wherein the closure member includes a first position in the housing where fluid communication is provided between the closure member port and the housing port, and a second position axially spaced from the first position where fluid communication between the closure member port and the housing port is restricted, wherein, in response to sealing of the bore of the housing by an obturating member sealingly engaging the seal, the closure member is configured to actuate from the first position to the second position.
Abstract:
Example methods are disclosed for collecting hydrocarbons in a collection region that is non-contiguous to a production well. In an example method, a production well and a collection well are formed. A path between the production well and the collection well is determined, which is not necessarily the shortest distance path. A fluid communication channel is then provided within a geological formation between the production well and collection well, along the determined path. Fluid communication is provided between the production well and the collection well without intersecting the collection well with the production well, and without otherwise drilling a hole to connect the production well and collection well.
Abstract:
A downhole tool or component thereof comprising a cellulosic derivative, wherein the cellulosic derivative is capable of at least partially degrading in a wellbore environment, thereby at least partially degrading the downhole tool or component thereof. Methods of introducing the downhole tool into a wellbore environment, performing a downhole operation, and at least partially degrading the downhole tool or component therein in the wellbore.
Abstract:
A method of performing real-time position sensing includes conveying a tool attached to a tubular string in a borehole. The tool includes a position sensing sub, and the position sensing sub includes sensing devices. The method further includes recording measurements taken by the sensing devices. The method further includes determining, based on the measurements, a position along the borehole of a particular portion of the tubular string. Data from sensing devices having a higher priority overrides conflicting data from sensing devices having a lower priority. The method further includes transmitting the position wirelessly.
Abstract:
An example latch coupling assembly includes a latch coupling defining an inner latch profile and an expandable sleeve coupled to the latch coupling. A latch defining an outer latch profile is mateable with the inner latch profile, and a mandrel is at least partially extendable within the expandable sleeve. An expansion cone is moveable along the mandrel between a first position, where the expansion cone is positioned within the expandable sleeve, and a second position, where the expansion cone is moved into engagement with an inner radial surface of the expandable sleeve to radially expand the expandable sleeve into engagement with a casing string and thereby secure the latch coupling within the casing string.