FIELD

Disclosed examples relate to a releasable connector apparatus for use in providing a releasable connection with a downhole tool.

BACKGROUND

In the oil and gas exploration and production industry tools are deployed and operated in a well bore using various conveyance media, such as wireline, coiled tubing, jointed pipe and the like. One consideration in wireline operations is the strength of the wire or cable, and in the event of a tool becoming stuck downhole, wire breakage is a common problem. Even if the wire does not break, for example during attempts by an operator to free the tool by applying tension in the wire, it is often necessary to drop a cutter bar and cut the wire.

In some circumstances significant lengths of wire may be left in the well, possibly “bird nested”. Remedial operations typically require finders to be run to locate the top of the wire and ball this up, followed by grabs to retrieve the wire. It is often the case that the wire needs to be retrieved in manageable amounts leading to multiple fishing runs and a large amount of rig time to just reach the top of the rope socket on the stuck tool.

To minimize the risk or requirement for wire-breaks/cutting, a time delayed releasable connector has been proposed which provides a releasable connection between the wire and tool. Such a connector is configured to maintain a connection while the wire is under tension by the effect of the weight of the tool. However, in the event of the tool hanging-up or becoming stuck, the loss in tension within the wire will initiate a time-delayed release of the connector. An example of a time delayed releasable connector is disclosed in U.S. Pat. No. 5,568,836, which is incorporated herein by reference.

SUMMARY

An aspect of the present disclosure relates to a releasable connector apparatus for use in providing a releasable connection between a conveyance member, such as wireline, and a downhole tool. The apparatus may function to permit disconnection between the conveyance member and the downhole tool in a controlled manner. Disconnection may be achieved in response to an initiation event. The initiation event may be provided in response to the weight of the tool being at least partially removed from the conveyance member, such as might occur when the tool is hung-up in a well.

The connector apparatus may facilitate a time delayed disconnection following an initiation event.

The connector apparatus may comprise an actuator for use in reconfiguring the apparatus from a connected configuration to a disconnected configuration. The actuator may be operated in response to the initiation event. The actuator may comprise a spring biased actuator. The actuator may comprise or be associated with a time delay arrangement, such as a hydraulic metering arrangement.

The actuator may be isolated, for example sealed, within a cavity formed in the connector apparatus. Such isolation may assist to eliminate or minimize exposure of the actuator to well fluids and/or pressures. For example, the actuator may be protected from interference from well debris. Further, the apparatus may be isolated from pressure applied forces which may otherwise provide an adverse or undesired biasing force on the actuator.

An aspect of the present disclosure relates to a releasable connector apparatus for use in providing a releasable connection between a conveyance member and a downhole tool, the apparatus comprising: a connector mandrel to be coupled to a conveyance member; a connector housing to be coupled with a downhole tool; a socket defined within the connector housing for receiving the connector mandrel; a latch arrangement operable within the socket and comprising a latch member, wherein the latch arrangement is moveable relative to the connector housing between a connect position in which the latch member is locked relative to the connector mandrel to prevent removal of the connector mandrel from the socket, and a disconnect position in which the latch member is unlocked relative to the connector mandrel to permit removal of the connector mandrel from the socket; a cavity defined within the connector housing, wherein the cavity is sealingly isolated from the socket; and an actuator mounted within the cavity and coupled to the latch arrangement, wherein the actuator is moveable relative to the housing between a first position in which the latch arrangement is in its connect position, and a second position in which the latch arrangement is in its disconnect position.

By virtue of the socket being configured to receive the connector mandrel, at least in some configurations during use the socket may be exposed to downhole conditions, such as well fluids and pressures. By sealingly isolating the cavity from the socket, fluid and/or pressure communication between the socket and the cavity may be prevented or minimized. Such an arrangement may assist to isolate the actuator from exposure to well fluids when the releasable connector apparatus is deployed/operated in a well, thus minimizing ingress of well debris, abrasive material, adverse chemicals and the like, which may otherwise interfere with the operation of the actuator. Further, such an arrangement may maintain the cavity in a preferred, for example clean, environment, such that any remedial attention, such as cleaning, of the connector apparatus may be minimized before reuse.

In some known examples efforts may be made to eliminate debris by use of filter arrangements. However, such filter arrangements are sensitive to plugging, which might adversely affect operations. Sealing the socket from the cavity may assist in avoiding or minimizing the requirement to use any filter arrangements.

The cavity may be sealingly isolated from the socket such that fluid pressure within the socket is prevented from applying a biasing force on the actuator. Such an arrangement may avoid the requirement for the actuator to overcome the effect of well pressure, and/or to minimize the risk of premature or inadvertent operation of the actuator by the effect of well pressure, and/or the like.

The latch arrangement may be axially moveable relative to the connector housing between its connect and disconnect positions. In some examples the latch arrangement may be rotationally moveable relative to the connector housing between its connect and disconnect positions.

The connector mandrel may comprise a latch recess, wherein the latch member is moveable to selectively engage and disengage the latch recess. In one example the latch member may be radially moveable to selectively engage and disengage the latch recess.

The latch recess may comprise a circumferential recess. The latch recess may be circumferentially continuous. Alternatively, the latch recess may be circumferentially discontinuous.

When the latch arrangement is in its connect position the latch member may be supported, for example radially supported, to prevent the latch member from moving to disengage the latch recess. When the latch arrangement is in its disconnect position the latch member may be desupported, for example radially desupported, to permit the latch member to move to disengage the latch recess.

In one example, when the latch arrangement is in its connect position the latch member may be supported in a radially inward position and in engagement with the connector mandrel. When the latch arrangement is in its disconnect position the radial support to the latch member may be removed.

The releasable connector apparatus may comprise a support region and a desupport region, wherein when the latch arrangement is in its connect position the latch member is aligned with the support region, and when the latch arrangement is in its disconnect position the latch member is aligned with the desupport region. The support region and desupport region may be defined by the connector housing. The support region and desupport region may be provided on a unitary component of the connector housing. Alternatively, the support region and desupport region may be provided on separate components of the connector housing.

The desupport region may define a region of relief relative to the support region. The desupport region may define a larger diameter than the support region.

The latch arrangement may comprise a latch sleeve which is operable within the socket. The latch sleeve may be moveable, by the actuator, relative to the connector housing between the connect and disconnect positions. The latch sleeve may be axially moveable relative to the housing between the connect and disconnect positions.

The latch member may be mounted on the latch sleeve. In some examples the latch sleeve may define a latch member housing. The latch member may be radially moveable relative to the latch sleeve. In one example the latch member may be mounted within a latch pocket defined in a wall of the latch sleeve. The latch pocket may extend radially through the wall of the latch sleeve.

The latch member may be integrally formed with the latch sleeve. Alternatively, the latch member may be separately formed from the latch sleeve.

The latch member may comprise a dog. The latch member may comprise a key member. The latch member may comprise a collet member.

In one example a single latch member may be provided. Alternatively, multiple latch members may be provided, for example a number of circumferentially arranged latch members.

At least a portion of the connector mandrel may be received within the latch sleeve.

The latch arrangement may be supported, for example axially supported, by the housing when the latch arrangement is in one of its connect and disconnect positions. Such an arrangement may permit pressure induced forces applied on the latch arrangement to be directed into the housing. This may assist to prevent such forces from being applied to the actuator.

The latch arrangement may be supported, for example axially supported, by the housing at least when the latch arrangement is in its disconnect position. Such an arrangement may permit pressure induced forces applied on the latch assembly to be reacted into the housing at least when the connector mandrel is permitted to be removed from the socket. This may be advantageous in some circumstances, for example where a sealing effect initially provided by the connector mandrel when received within the socket is removed.

The apparatus may comprise a sealing arrangement for sealing the cavity from the socket. The sealing arrangement may comprise a unitary sealing component. Alternatively, the sealing arrangement may comprise multiple components or features which collectively operate to provide sealing between the cavity and socket. In some examples the sealing arrangement may be divided across different features of the apparatus. For example, at least one of the connector mandrel, latch arrangement, and connector housing may define a portion of the sealing arrangement.

The sealing arrangement may be configured to fluidly isolate the cavity from the socket. The sealing arrangement may be configured to isolate the actuator from exposure to pressure generated forces applied by fluid within the socket. Thus, the actuator may be permitted to operate without or with minimal influence from surrounding fluid pressure.

The sealing arrangement may comprise a sealing plug. The sealing plug may sealingly engage the housing. The sealing plug may sealingly engage the latch arrangement. For example, the sealing plug may be at least partially located within the latch arrangement, for example within a latch sleeve of the latch arrangement. In such an arrangement the sealing plug may sealingly engage an inner surface of the latch arrangement, such as an inner surface of the latch sleeve.

The sealing plug may comprise at least one seal member, such as at least one O-ring or the like.

The sealing plug may comprise or define a dynamic seal. The sealing plug may be configured to provide sealing engagement with the latch arrangement during relative movement, for example relative axial movement, between the sealing plug and the latch arrangement. Such relative movement may be provided or present during movement of the latch arrangement between its connect and disconnect positions. This arrangement may facilitate reconfiguration of the latch arrangement under the operation or control of the actuator assembly, while assisting to maintain the cavity sealingly isolated from the socket.

The sealing plug may be engaged with the connector housing. The sealing plug may be supported by the connector housing. Such an arrangement may direct fluid pressure forces applied on the sealing plug into the connector housing. This may assist to prevent such forces from being applied to the actuator. In one example the sealing plug may be axially supported by the connector housing. The sealing plug may be engaged with an axial shoulder provided on or associated with the connector housing. The axial shoulder may be defined by an annular lip, for example.

The sealing plug may directly engage the connector housing. Alternatively, the sealing plug may indirectly engage the connector housing, for example via an intermediate component or structure.

The sealing plug may be supported on a plug support sleeve, wherein the plug support sleeve is engaged with or supported by the connector housing. At least a portion of the plug support sleeve may be integrally formed with the sealing plug. At least a portion of the plug support sleeve may be separately formed and secured to the sealing plug, for example via a threaded connection or the like.

At least a portion of the plug support sleeve may be integrally formed with the connector housing. At least a portion of the plug support sleeve may be separately formed and secured to the connector housing, for example via a threaded connection or the like.

As will be described in more detail below, the plug support sleeve may accommodate a transmission connection between the actuator and the latch arrangement. For example, the plug support sleeve may define one or more slots, for example axially extending slots, to accommodate connection keys extending between the actuator and the latch arrangement.

The sealing arrangement may comprise a latch seal interposed between the latch arrangement and the connector housing. In one example the latch seal may be interposed between a latch sleeve of the latch arrangement and the connector housing.

The latch seal may function in combination with the sealing plug to sealingly isolate the socket form the cavity.

The latch seal may comprise at least one seal member, such as at least one O-ring or the like.

The latch seal may comprise or define a dynamic seal. The latch seal may be configured to provide a seal between the latch arrangement and the connector housing during relative movement therebetween.

The latch seal may provide a seal between the latch arrangement and the connector housing when the latch arrangement is in one or both of its connect and disconnect positions. The latch seal may provide a seal between the latch arrangement and the connector housing at least when the latch arrangement is in its disconnect position. Such an arrangement may assist to ensure the cavity remains sealingly isolated from the socket when the connector mandrel is permitted to be or is removed from the socket.

The latch seal may be mounted on the latch assembly, for example on a latch sleeve of the latch assembly. The latch seal may be configured to provide a seal with an inner surface of the connector housing.

The sealing arrangement may comprise a connector mandrel seal. The connector mandrel seal may be interposed between the connector mandrel and at least one of the connector housing and the latch arrangement when the connector mandrel is received within the socket of the connector housing.

The connector mandrel seal may function in combination with the sealing plug and optionally the latch seal to sealingly isolate the socket form the cavity, at least when the connector mandrel is received within the socket of the connector housing.

The connector mandrel seal may be interposed between the connector mandrel and both the connector housing and the latch arrangement. In one example the connector mandrel seal may axially straddle an interface between the connector housing and the latch arrangement.

The connector mandrel seal may axially straddle the latch member of the latch arrangement.

In some examples when the connector mandrel is received within the socket the connector mandrel seal may isolate the latch seal from exposure to fluids/pressure within the socket.

In one example the sealing plug and the connector mandrel seal may establish a seal within the latch assembly at axially spaced regions on the latch assembly. In one example the axially spaced regions may define a substantially common diameter. The provision of the axially spaced seals within the latch assembly may assist to minimize any net pressure force applied on the latch assembly by fluid pressure within the socket, thus minimizing the effect of any pressure force being applied on the actuator via the latch assembly.

The connector mandrel seal may comprise at least one seal member, such as at least one O-ring or the like. At least one seal member may be interposed between the connector mandrel and the latch arrangement, and at least one seal member may be interposed between the connector mandrel and the connector housing.

The connector mandrel seal may be mounted on the connector mandrel.

The connector mandrel may comprise an internal cavity which is in communication with the socket of the connector housing when the connector mandrel is received therein. In one example the cavity may define an opening, for example at one end of the connector mandrel, wherein the opening provides communication between the cavity and the socket when the connector mandrel is received therein. The cavity may be provided in the form of a bore, such as a blind bore extending into the connector mandrel, for example one end of the connector mandrel. The cavity may be coaxially arranged with the connector mandrel.

The internal cavity of the connector mandrel may be configured to be arranged in communication with the environment surrounding the connector apparatus. In use, the surrounding environment may include a well environment. The cavity may therefore facilitate communication between the socket and the surrounding environment. This arrangement may assist to prevent or minimize the risk of the connector mandrel being hydraulically locked within the socket, which may otherwise prevent removal of the connector mandrel when disconnection is required.

The connector mandrel may define one or more external ports for facilitating communication between the cavity and the surrounding environment. At least one external port may extend generally laterally of the connector mandrel.

The internal cavity of the connector mandrel may be filled with a medium. Both the socket of the connector housing and the internal cavity of the connector mandrel may be filled with a medium. The medium may comprise a solid or semi-solid medium. The medium may comprise a high viscosity medium. The medium may provide resistance to wash out. The medium may comprise a gel. The medium may comprise a grease, for example.

The pressure of the medium, when in place within the internal cavity of the connector mandrel and optionally the socket of the connector housing, may be substantially equalized with the pressure of the environment surrounding the releasable connector apparatus. Such equalization may be achieved by virtue of the cavity being in communication with the surrounding environment, for example via one or more external ports. The medium may therefore facilitate pressure equalization, while minimizing exposure of the socket and cavity from fluids within the surrounding environment, such as well fluids.

The connector mandrel may comprise an injector arrangement, for permitting a medium to be injected into the connector mandrel, for example into the cavity of the connector mandrel. The injector arrangement may permit a medium to be injected into the socket when the connector mandrel is located therein. During initial set-up of the connector apparatus, the medium may be injected until the medium is visibly identified exiting one or more external ports. The injector arrangement may facilitate injection of a medium prior to deploying the connector apparatus downhole.

The injector arrangement may comprise a connector, such as a connection nipple, which may facilitate attachment of an injection device, such as a grease injection gun. The injector arrangement may comprise a conduit extending within the cavity to permit injection of the medium via the conduit. The conduit may open into a preferred region of the cavity and/or socket. The conduit may assist to provide a complete fill of the cavity and socket, for example by minimizing the risk of the medium short circuiting from a point of injection to one or more external ports.

The connector mandrel may comprise a connection arrangement for facilitating connection with a conveyance member. For example, the connection arrangement may comprise a wedge connector, spool connector or the like.

The apparatus may comprise a transmission connection providing a connection between the actuator and the latch assembly. Such a transmission connection may permit the actuator to cause relative movement between the latch assembly and the connector housing.

The transmission connection may provide a connection between the actuator and a latch sleeve of the latch assembly.

The transmission connection may provide an axial connection between the actuator and the latch assembly.

The transmission connection may comprise a transmission member extending between the actuator and the latch assembly. The transmission member may extend radially between the actuator and the latch assembly. The transmission member may be provided separately from both the actuator and the latch assembly. Alternatively, the transmission member may be integrally formed with at least one of the actuator and the latch assembly.

The transmission member may comprise a key, for example.

A single transmission member may be provided. Alternatively, a plurality of transmission members may be provided.

The transmission connection may extend through a portion of the sealing arrangement to engage the latch assembly. In one example the transmission connection may extend through a plug support sleeve. For example, the plug support sleeve may comprise or define a slot, such as an axially extending slot, for accommodating the transmission connection.

The actuator may comprise an actuator rod. The actuator rod may be generally elongate. The actuator rod may extend axially within the cavity of the connector housing. The actuator rod may comprise a unitary component. The actuator rod may comprise multiple components secured together. The actuator rod may be moveable relative to the connector housing between its first and second positions, respectively corresponding to the connect and disconnect positions of the latch arrangement.

The actuator may comprise a force arrangement for applying a motive force between the actuator and the connector housing, for example between the actuator rod and the connector housing. The force arrangement may be configured to apply a motive force between the actuator and the connector housing in at least one direction. For example, in one example the force arrangement may be configured to apply a motive force between the actuator and the connector housing to move the actuator towards its second position, corresponding to the disconnect position of the latch arrangement.

The force arrangement may be configured to apply a bias force between the connector housing and the actuator in one direction. For example, the force arrangement may be configured to apply a bias force between the connector housing and the actuator in a direction to move and/or hold the actuator in its second position, corresponding to the disconnect position of the latch arrangement. In this arrangement the actuator may be moved and/or held relative to the connector housing against the bias force to configure or maintain the latch arrangement in its connect position.

In one example the actuator may be moved and/or held relative to the connector housing against the bias force by action of gravity on the connector housing and any associated tool. That is, the weight of the connector housing and any associated downhole tool, when suspended from a conveyance member via the connector mandrel (for example deployed within a wellbore), may be used to move/hold the actuator in its first position, corresponding to the connect position of the latch arrangement. In such an arrangement, with weight applied and tension generated within the conveyance member the latch arrangement will be held within its connect position to maintain a connection with the connector mandrel.

The weight of the connector housing and associated tool may be effectively used by virtue of the connector mandrel being connected to the latch assembly, and the latch assembly being moveable relative to the connector housing.

The force arrangement may be selected or configured such that the weight of the connector mandrel and associated downhole tool may be sufficient to overcome or exceed an output force of the force arrangement.

The force arrangement may be configured to move the actuator towards its second position, corresponding to the disconnect position of the latch arrangement, in response to an initiation event.

The initiation event may comprise at least partial removal of the weight of the connector housing and associated downhole tool from the connector mandrel. Such an initiation event may result in a reduction in tension applied in a conveyance member associated with the connector mandrel.

In some uses the weight of the connector housing and any associated tool may be at least partially removed in the event of snagging or hanging-up of the downhole tool. Such an arrangement may permit disconnection of the conveyance member from the downhole tool, simplifying the subsequent fishing procedure.

The initiation event may comprise a signal transmitted to the releasable connector apparatus. The signal may comprise a mechanical signal, for example transmitted via manipulation of the conveyance member. The signal may comprise an electrical signal, optical signal, pressure signal and/or the like.

The force arrangement may comprise an energy storage device.

The force arrangement may comprise an elastic arrangement. The force arrangement may comprise a spring arranged to act, for example axially act, between the actuator and the housing. The force arrangement may comprise a mechanical spring, gas spring or the like.

The actuator may comprise an axial shock absorbing arrangement. The axial shock absorbing arrangement may be configured to absorb axial shock loading. Such shock absorption may assist to avoid or minimize such axial shock loading from causing any premature movement of the latch arrangement to its disconnect position. The axial shock absorbing arrangement may comprise a Belleville spring arrangement.

The releasable connector apparatus may comprise a damping mechanism associated with the actuator to delay or restrict the rate of relative movement between the actuator and the connector mandrel in at least one direction. The damping mechanism may form part of the actuator.

The damping mechanism may delay or restrict the rate of relative movement of the actuator towards its second position, corresponding to the disconnect position of the latch arrangement. This may provide a time delay prior to the latch arrangement being fully positioned in its disconnect position to permit release of the connector mandrel. The time delay may permit operations to be performed for a time period without necessarily causing a disconnect. For example, a temporary removal or reduction in weight applied on a conveyance member via the connector mandrel may be permitted without causing disconnection from the connector housing.

The damping mechanism may provide greater damping to relative movement between the actuator and the connector housing in one direction than in an opposite direction. For example, the damping mechanism may provide increased resistance to movement of the actuator in a direction towards its second position than in a direction towards is first position. Such an arrangement may facilitate more rapid movement of the latch arrangement to its connect position.

The damping mechanism may comprise a hydraulic metering arrangement.

The damping mechanism may comprise a piston arrangement moveable within a fluid chamber. The fluid chamber may be provided or defined within the connector housing. Accordingly, the piston arrangement and the housing may be moveable relative to each other to cause movement of the piston arrangement within the fluid chamber. The fluid chamber may comprise a fluid, such as oil.

The piston arrangement may be mounted on a piston rod. The piston rod may be coupled with or form part of the actuator, such that movement of the actuator may cause corresponding movement of the piston arrangement.

The piston arrangement may divide the fluid chamber into first and second chamber regions. Movement of the piston arrangement may vary the respective volumes of the first and second chamber regions. In one example movement of the piston arrangement which is associated with movement of the actuator towards its first position may involve an increase in the volume of the second chamber region and a corresponding decrease in the volume of the first chamber region. Conversely, movement of the piston arrangement which is associated with movement of the actuator towards its second position may involve an increase in the volume of the first chamber region and a corresponding decrease in the volume of the second chamber region.

The piston arrangement may permit fluid to pass between the first and second fluid chambers during movement of the piston arrangement. The piston arrangement may provide resistance to such fluid flow in at least one direction, to provide damping of movement of the actuator.

The piston arrangement may comprise a single flow path facilitating fluid flow between the first and second fluid chambers. The piston arrangement may comprise a variable resistance arrangement which provides an increase in resistance to flow in one direction along the flow path.

The piston arrangement may comprise a first flow path configured to permit fluid flow from the first chamber region to the second chamber region during movement of the piston arrangement which is associated with movement of the actuator towards its first position. The first flow path may comprise a one way valve arrangement which permits flow form the first chamber region to the second chamber region, while preventing reverse flow. The one way valve arrangement may comprise a check ball valve, for example.

The piston arrangement may comprise a second flow path configured to permit fluid flow from the second chamber region to the first chamber region during movement of the piston arrangement which is associated with movement of the actuator towards its second position. The second flow path may define a smaller flow area, for example significantly smaller flow area, than the first flow path. This may permit the second flow path to provide a larger flow resistance than the first flow path.

The second flow path may be defined by an annular flow path. The second flow path may comprise an orifice.

The damping mechanism may comprise a pressurizing arrangement configured to apply a pressure to the fluid within the fluid chamber. The pressurizing arrangement may comprise a spring biased piston which defines a boundary of the fluid chamber. The pressurizing arrangement may apply a pressure within the fluid chamber which is associated with the spring force of the spring biased piston.

The pressurizing arrangement may be in pressure communication with the cavity. Such an arrangement may provide a degree of pressure balancing between the cavity and the fluid chamber.

The pressurizing arrangement may function to accommodate thermal expansion of fluid within the fluid chamber.

The cavity may be air filled, for example at atmospheric pressure. Such an arrangement may permit the cavity, and thus actuator, to be provided in a relatively clean environment. Further, such an arrangement may avoid exposure of the actuator to excessive pressure forces.

The connector housing may be provided as a unitary component. Alternatively, the connector housing may be provided as multiple components coupled together, for example via threaded connections. One or more connections between individual housing components may be sealed, for example via O-ring seals or the like. Such an arrangement may seal the cavity from the surrounding environment.

The housing may define at least one access aperture to enable access to the actuator. Such access may permit an operator to move the actuator towards its first position to permit a connection to be made with the connector mandrel when said mandrel is received within the socket of the connector housing. The at least one access aperture may permit insertion of a tool, such as a lever tool, to move the actuator.

The releasable connector apparatus may comprise a cover member arranged to selectively close the at least one access aperture. The cover member may comprise a cover sleeve which is mounted on the connector housing to selectively cover the at least one access aperture. The cover member may be threadedly secured to the housing. The cover member may be sealingly engaged with the housing to seal the cavity.

The connector housing may be arranged to be secured to a downhole tool via a threaded connection, for example. The connector housing may be arranged to be secured to a tool string.

The connector mandrel may be configured to be coupled to any suitable conveyance member, such as wireline, tubing or the like.

An aspect of the present disclosure relates to a releasable connector apparatus for use in providing a releasable connection between a conveyance member and a downhole tool, the apparatus comprising: a connector housing to be coupled with a downhole tool; a socket defined within the connector housing for receiving a connector mandrel associated with a conveyance member; a latch arrangement operable within the socket and moveable relative to the connector housing between a connect position to prevent removal of the connector mandrel from the socket, and a disconnect position to permit removal of the connector mandrel from the socket; a cavity defined within the connector housing, wherein the cavity is sealingly isolated from the socket; and an actuator mounted within the cavity and coupled to the latch arrangement, wherein the actuator is moveable relative to the housing between a first position in which the latch arrangement is in its connect position, and a second position in which the latch arrangement is in its disconnect position.

An aspect of the present disclosure relates to a connector housing, for example for use in any other aspect.

An aspect of the present disclosure relates to a connector mandrel, for example for use in any other aspect.

An aspect of the present disclosure relates to a method for providing a releasable connection between a downhole tool and a conveyance member. The method may comprise using a releasable connection apparatus according to any other aspect.

Features of one aspect may form part of any other aspect described herein and are not repeated for brevity.

