Interlocking and setting section for a downhole tool

1. An interlock and setting section for a downhole tool system, the interlock and setting section comprising:

a shifting profile located within a throughbore of the downhole tool system, wherein the shifting profile is capable of being coupled to by a shifting tool in the throughbore of the downhole tool system, in order to move the shifting profile with respect to the downhole tool system;

a load connector member coupled to the shifting profile and further coupled to a load setting member arranged to deliver a load to a tool as required;

wherein there is further provided a selective locking mechanism to selectively lock at least the load setting member to at least one of the downhole tool system and the shifting profile,

wherein the downhole tool system comprises a static mandrel against which a load is to be generated,

wherein the selective locking mechanism comprises two lock members located in a recess in the static mandrel and which, in a locking configuration, are arranged such that one of the lock members is restrained from longitudinal movement with respect to the static mandrel and wherein the lock members radially support one another to permit load to be transferred from the shifting profile to the load setting member, and

wherein the other of the lock members can be moved longitudinally with respect to the static mandrel by a pre-determined length, such that the radial support between the two lock members is removed and the locking mechanism is unlocked.

2. The section of claim 1 , wherein the static mandrel is rigidly connected back to the surface of the downhole well.

3. The section of claim 2 , wherein at least one of the couplings between the load connecting member and i) the shifting profile and ii) the load setting member allows the shifting tool to move by a slightly greater distance than the said pre-determined length before the coupling therebetween is capable of transferring load from the shifting profile to the load setting member.

4. The section of claim 2 , wherein the shifting profile is initially secured to the static mandrel by a disruptable device to prevent any unwanted movement therebetween prior to the selective unlocking occurring and wherein the disruptable device comprises a shear screw or shear.

5. The section of claim 1 , wherein the lock members comprise one or more radially projecting and co-operating formations in the locking configuration which are adapted to no longer co-operate when the said other lock member is moved relative to the said one lock member.

6. An interlock and setting section for a downhole tool system, the interlock and setting section comprising:

a shifting profile located within a throughbore of the downhole tool system, wherein the shifting profile is capable of being coupled to by a shifting tool in the throughbore of the downhole tool system, in order to move the shifting profile with respect to the downhole tool system; and

a load connector member coupled to the shifting profile and further coupled to a load setting member arranged to deliver a load to a tool as required,

wherein there is further provided a selective locking mechanism to selectively lock at least the load setting member to at least one of the downhole tool system and the shifting profile,

wherein the downhole tool system comprises a static mandrel against which a load is to be generated,

wherein the selective locking mechanism comprises two lock members located in a recess in the static mandrel and which, in a locking configuration, are arranged such that one of the lock members is restrained from longitudinal movement with respect to the static mandrel and wherein the lock members radially support one another to permit load to be transferred from the shifting profile to the load setting member,

wherein the static mandrel is rigidly connected back to the surface of the downhole well, and

wherein the selective locking mechanism can be unlocked by movement of the shifting profile with respect to the static mandrel such that the lock acting between the load setting member and the at least one of the downhole tool system and the shifting profile is removed.

7. An interlock and setting section for a downhole tool system, the interlock and setting section comprising:

a shifting profile located within a throughbore of the downhole tool system, wherein the shifting profile is capable of being coupled to by a shifting tool in the throughbore of the downhole tool system, in order to move the shifting profile with respect to the downhole tool system; and

a load connector member coupled to the shifting profile and further coupled to a load setting member arranged to deliver a load to a tool as required;

wherein there is further provided a selective locking mechanism to selectively lock at least the load setting member to at least one of the downhole tool system and the shifting profile,

wherein the downhole tool system comprises a static mandrel against which a load is to be generated,

wherein the selective locking mechanism comprises two lock members located in a recess in the static mandrel and which, in a locking configuration, are arranged such that one of the lock members is restrained from longitudinal movement with respect to the static mandrel and wherein the lock members radially support one another to permit load to be transferred from the shifting profile to the load setting member, and

wherein the other of the lock members can be moved longitudinally with respect to the static mandrel by a pre-determined length, when in the locking configuration, such that the two lock members collapse in on one another.