1. A securing device for transporting and mounting a measuring arrangement for the determination of the position of two components which are movable with respect to each other, said measuring arrangement comprising a linearly extending measuring graduation, a support body for said measuring graduation, a scanning device for scanning said measuring graduation, which is guided at a defined distance from said measuring graduation, and a mounting base for fastening said scanning device to one of said two components which are movable with respect to each other, wherein said securing device comprises:
a base body which is longitudinally shifted along a guide track of said support body, and which is on the one hand fixable to said mounting base; and which is on the other hand fixable to said support body in order to maintain said mounting base in a defined nominal position with respect to said support body; and
an extended part protruding away from said base body and extending along said measuring graduation in an extension direction; and
a connector provided on said extended part which can be automatically brought into engagement with a connecting point of said mounting base, wherein said connector is distanced from said base body in said extension direction, and said connector is provided at an end of said extended part distanced from said base body and said connector is brought into engagement with said connecting point by shifting said base body in said extension direction.
2. The securing device in accordance with claim 1, wherein said connector is formed as one piece on said extended part.
3. The securing device in accordance with claim 1, wherein said connector is inserted into said connecting point of said mounting base.
4. The securing device in accordance with claim 1, wherein said connector makes a plug connection.
5. The securing device in accordance with claim 1, wherein said connector makes a positive connection.
6. The securing device in accordance with claim 1, wherein said extended part is angled off in an area of said connector, so that the connector slides over a ramp of said connecting point.
7. The securing device in accordance with claim 1, wherein a section of said extended part is moved transversely with respect to said extension direction by elastic deformation.
8. The securing device in accordance with claim 1, wherein said connector comprises a contact protrusion which engages said connecting point.
9. The securing device in accordance with claim 1, wherein said extended part is formed as one piece on said base body.
10. The securing device in accordance with claim 1, further comprising a guide provided on said extended part, said guide shifts said extended part along an associated guide device of said support body in said extension direction.
11. The securing device in accordance with claim 10, wherein said guide adjoins said connector in said extension direction.
12. The securing device in accordance with claim 10, wherein said guide comprises a first guide area and a second guide area, which are spaced apart from each other in said extension direction and are provided on said extended part.
13. The securing device in accordance with claim 1, wherein said extended part comprises a first leg and a second leg, each of which extends substantially parallel with respect to each other, and said first leg is provided with said connector and said second leg is provided with a second connector.
14. The securing device in accordance with claim 1, wherein said base body is fastened on said mounting base by being shifted along a guide track of said support body.
15. The securing device in accordance with claim 14, wherein said base body is positively connected with said mounting base by a snap-in connection andor a plug connection.
16. The securing device in accordance with claim 15, wherein said base body comprises a plug element that is plugged into a plug area of said mounting base.
17. The securing device in accordance with claim 16, wherein said plug element comprises a protrusion that is inserted into a recess of said mounting base.
18. The securing device in accordance with claim 15, wherein said base body comprises a snap-in element snapped into a snap-in opening of said mounting base.
19. The securing device in accordance with claim 18, wherein said snap-in element comprises a snap-in lever that is snapped into said snap-in opening.
20. The securing device in accordance with claim 1, wherein said base body comprises a guide that allows said base body to be shifted along a guide track of said support body in said extension direction.
21. The securing device in accordance with claim 1, wherein said base body comprises a clamping device that clamps on said support body.
22. The securing device in accordance with claim 21, wherein said base body comprises a guide that allows said base body to be shifted along a guide track of said support body in said extension direction.
23. The securing device in accordance with claim 22, wherein said guide is clamped in place on said guide track by said clamping device.
24. The securing device in accordance with claim 23, wherein an actuator is provided on said base body, said actuator actuates said clamping device, which acts on a clamping element of said clamping device.
25. The securing device in accordance with claim 24, wherein said actuator is rotatable.
26. The securing device in accordance with claim 25, wherein said actuator comprises a knurled screw or a knurled nut.
27. The securing device in accordance with claim 24, wherein a blocker is provided at said actuator, said blocker works together with a second blocker associated with said base body so as to limit a return movement of said actuator.
28. The securing device in accordance with claim 27, wherein snap-in points are provided on said actuator for arresting said actuator at different positions, each of which corresponds to a different state of said clamping device which is actuated by said actuator.
29. The securing device in accordance with claim 24, wherein markers are provided on said actuator, which represent different states of said clamping device which is actuatable by said actuator.
30. A measuring arrangement for determining the position of two components, which are movable in relation to each other, the arrangement comprising:
a linearly extending measuring graduation;
a support body for said measuring graduation, said support body comprising a guide track;
a scanning device that scans said measuring graduation and is guided at a defined distance from said measuring graduation;
a mounting base that fastens said scanning device to one of said two components which are movable with respect to each other; and
a securing device comprising:
a base body longitudinally shifted along said guide track, wherein said base body can be fastened to said mounting base and said base body can be fastened to said support body in order to maintain said mounting base in a defined nominal position with respect to said support body; and
an extended part protruding away from said base body and extending along said measuring graduation in an extension direction; and
a connector provided on said extended part which can be automatically brought into engagement with a connecting point of said mounting base; and
wherein said mounting base comprises a first face and a second face that are spaced apart from each other in said extension direction, wherein said base body can be fixed in place on said first face, and said extended part can be fixed in place on said mounting base at said connecting point, which is distant from said first face in said extension direction.
31. The measuring arrangement in accordance with claim 30, wherein a connecting point is provided on said mounting base, which is automatically engaged by said connector when said base body is fixed in place on said mounting base.
32. The measuring arrangement in accordance with claim 31, wherein said connector snaps into said connecting point when said base body is shifted along said guide track for being fastened to said mounting base.
33. The measuring arrangement in accordance with claim 32, wherein said connector is brought into engagement with said connecting point in a positively connected manner.
34. The measuring arrangement in accordance with claim 31, wherein said connecting point has a ramp that allows said extended part to be moved in an area of said connector in a direction transverse with respect to said extension direction.
35. The measuring arrangement in accordance with claim 34, wherein said connector is moved transversely with respect to said extension direction by said ramp in such a way that a guide of said extended part is pushed against a stop of said guide track.
36. The measuring arrangement in accordance with claim 30, wherein said extended part extends between said mounting base and said support body.
37. The measuring arrangement in accordance with claim 30, further comprising an insertion heel provided on said mounting base for easing movement of said connector to said connecting point.
38. The measuring arrangement in accordance with claim 30, wherein said base body is fastened on said mounting base by being shifted along a guide track of said support body and said mounting base comprises a second connecting point that is assigned to a second connector of said extended part.
39. The measuring arrangement in accordance with claim 30, wherein a plug area for introducing a plug element of said base body is provided on said mounting base.
40. The measuring arrangement in accordance with claim 30, wherein said base body comprises a snap-in element snapped into a snap-in opening of said mounting base and wherein a snap-in point for snapping in said snap-in element is provided on said mounting body.
41. The measuring arrangement in accordance with claim 40, wherein said snap-in element comprises a snap-in lever that is snapped into said snap-in opening.
42. The measuring arrangement in accordance with claim 30, wherein said base body comprises:
a clamping device that clamps on said support body;
a guide that allows said base body to be shifted along a guide track of said support body in said extension direction, wherein said guide is clamped in place on said guide track by said clamping device;
a first blocker that defines a return stop;
wherein an actuator is provided on said base body, said actuator actuates said clamping device, which acts on a clamping element of said clamping device; and
wherein a second blocker is provided at said actuator, said second blocker works together with said first blocker so as to limit a return movement of said actuator.
43. The measuring arrangement in accordance with claim 30, wherein said base body comprises:
a clamping device that clamps on said support body;
a guide that allows said base body to be shifted along a guide track of said support body in said extension direction, wherein said guide is clamped in place on said guide track by said clamping device;
a snap-in element;
wherein an actuator is provided on said base body, said actuator actuates said clamping device, which acts on a clamping element of said clamping device, wherein snap-in points are provided on said actuator for arresting said actuator at different positions, each of which corresponds to a different state of said clamping device which is actuated by said actuator; and
wherein said snap-in element snaps into said snap-in points.
44. The measuring arrangement in accordance with claim 30, wherein a guide track of said support body comprises a guide to which said securing device can be clamped.
45. The measuring arrangement in accordance with claim 44, wherein said support body comprises a second guide that extends parallel with said first guide in order to fix a position of said securing device in a plane defined by said first and second guides transversely to said extension direction.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for mitigating the shock from the detonation of a perforating charge in a subterranean wellbore, the method comprising the steps of:
disposing a mitigation tool in the wellbore;
detonating the perforating charge in the wellbore; and
activating the mitigation tool creating a fluid hammer.
2. The method of claim 1, wherein the mitigation tool is positioned in the wellbore above the perforating charge.
3. The method of claim 1, wherein the step of detonating the perforation charge and the step of activating the mitigation tool are performed substantially simultaneously.
4. The method of claim 1, wherein the step of activating the mitigation tool is performed subsequent to the step of detonating the perforating charge.
5. The method of claim 1, further including the steps of:
disposing a second mitigation tool in the wellbore; and
activating the second mitigation tool to create a fluid hammer, wherein the first mitigation tool and the second mitigation tool are activated at different times.
6. The method of claim 1, wherein the mitigation tool comprises:
a tubular body having an internal chamber;
a barrier disposed proximate a bottom end of the tubular body and in communication with the chamber; and
an actuator connected with the tubular body, the actuator adapted to open a port through the tubular body positioned above the barrier and into the chamber.
7. The method of claim 6, wherein the actuator is an explosive.
8. The method of claim 6, wherein the port has a cross-sectional area approximately that of the cross-sectional area of the chamber.
9. The method of claim 6, wherein the actuator comprises a plurality of actuators, each of the plurality of actuators opening a port through the tubular body and into the chamber when activated.
10. The method of claim 9, wherein the plurality of ports together have a cross-sectional area substantially equal to the cross-sectional area of the chamber.
11. The method of claim 1, wherein the mitigation tool comprises:
a tubular body having an internal chamber;
a barrier disposed proximate a bottom end of the tubular body and in communication with the chamber; and
a plurality of explosive charges connected with the tubular body proximate to a top end of the body, each of the plurality of explosive charges adapted to open a port through the tubular body and into the chamber when the mitigation tool is activated.
12. The method of claim 1, wherein the step of activating the mitigation tool comprises:
opening a port in the mitigating tool;
flooding an elongated chamber in the mitigation tool with a wellbore fluid; and
impacting the wellbore fluid on a barrier positioned in the elongated chamber below the port creating the fluid hammer.
13. A wellbore tool comprising:
a tubular body having a top end, a bottom end, and a chamber;
a barrier disposed proximate the bottom end in communication with the chamber; and
an actuator connected with the body, the actuator opening a port in the tubular body above the barrier providing fluid communication with the chamber when activated.
14. The wellbore tool of claim 13, wherein the actuator is an explosive charge.
15. (canceled)
16. The wellbore tool of claim 13, wherein the actuator comprises a plurality of actuators, each of the plurality of actuators opening a port in the tubular body and providing fluid communication with the chamber when activated.
17. The wellbore tool of claim 13, wherein the plurality of ports have a combined cross-sectional area substantially equal to a cross-section area of the chamber.
18. A wellbore tool string, the tool string comprising:
a perforating gun having a plurality of explosive perforating charges; and
a shock mitigation tool comprising:
a tubular body having a top end, a bottom end, and a chamber;
a barrier disposed proximate the bottom end in communication with the chamber; and
at least one actuator connected with the tubular body proximate to the top end of the tubular body, the at least one actuator opening at least one port in the tubular body providing fluid communication with the chamber when the at least one actuator is activated, wherein the port is located a distance above the barrier such that a fluid entering the chamber through the port impacts the barrier with a force to cause a pressure wave to dampen the shock of the detonated explosive perforating charges.
19. The tool string of claim 18, comprising a plurality of actuators, the actuators comprising explosive charges.
20. The tool string of claim 18, wherein the at least one port has a total combined cross-sectional area substantially equal to a cross-section area of the chamber.