CN204326985U - A kind of coiled tubing speed tubing string - Google Patents
A kind of coiled tubing speed tubing string Download PDFInfo
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- CN204326985U CN204326985U CN201420689486.XU CN201420689486U CN204326985U CN 204326985 U CN204326985 U CN 204326985U CN 201420689486 U CN201420689486 U CN 201420689486U CN 204326985 U CN204326985 U CN 204326985U
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Abstract
The utility model discloses a kind of coiled tubing speed tubing string, precalculated position is delivered to by under coiled tubing speed tubing string by continuous oil pipe device, the end of the second coiled tubing blocked by blanking plug, prevent oily liquid in pipe or other foreign material from entering in coiled tubing speed tubing string, hanger sets, then in the annular space formed to oil pipe and coiled tubing speed tubing string, infusion liquid sets effect to check, destroy blanking plug, the annular space that coiled tubing speed tubing string and oil pipe and the second coiled tubing are formed is communicated with, hydraulic releasing to be given up operation to hanger, after having given up by continuous oil pipe device by the first coiled tubing, first coiled tubing joint and hydraulic releasing propose, go into operation.The device that this programme provides, sets the assigned address at oil pipe by coiled tubing speed tubing string, shortens the length of the coiled tubing of use, solves the problem that the gas well problem that causes not in time due to coiled tubing supply can not solve in time.
Description
Technical field
The utility model relates to petroleum works technical field, particularly a kind of coiled tubing speed tubing string.
Background technology
Gas well enters the middle and later periods of exploitation, due to gas-bearing formation pressure drop, in low-pressure well, the water yield increases, gas fluid-carrying capability is deteriorated, pit shaft hydrops increases, even there is stopping production phenomenon in the normal production that have impact on gas well, in prior art, general employing speed tubing string drainage gas recovery is with the fluid-carrying capability of lift gas, makes gas well recover the state of steady production.
The coiled tubing speed tubing string be suspended in oil pipe is made up of coiled tubing, coiled tubing joint, hydraulic releasing, speed tubing string hanger and blanking plug etc.Conventional coiled tubing speed tubing string is that coiled tubing is suspended on well head, and the coiled tubing length of needs is longer, and because coiled tubing machining limit is by the restriction of domestic level of processing, process velocity is comparatively slow, causes the production problem of gas well effectively not solve.
Therefore, how to shorten the use length of coiled tubing, ensure the timely solution of gas well liquid loading problem, become the technical problem that those skilled in the art are urgently to be resolved hurrily.
Utility model content
In view of this, the utility model provides a kind of coiled tubing speed tubing string, to shorten the use length of coiled tubing, ensures the timely solution of gas well liquid loading problem.
For achieving the above object, the utility model provides following technical scheme:
A kind of coiled tubing speed tubing string, comprising:
The first coiled tubing be connected with continuous oil pipe device;
The hydraulic releasing be connected by the first coiled tubing joint with described first coiled tubing;
Be arranged on the hanger below described hydraulic releasing, described hanger comprises:
Axle, described axle offers pressure transmission hole;
Be set in described axle outside and be connected with described spindle thread set top connection, described in set top connection and be connected by lock dog with described hydraulic releasing;
Baffle ring, described baffle ring is set in the outer wall of described axle and the upper surface of described baffle ring and the described lower surface setting top connection offset;
Packing element, described packing element is set in the outer wall of described axle, and the lower surface of described packing element upper surface and described baffle ring offsets;
Be set in the outside of described axle and the upper piston offseted with described packing element lower surface, the inwall of described upper piston is step surface, the diameter of the terrace of appearing on the stage of described upper piston is little compared with the diameter of terrace of leaving office, and the terrace of appearing on the stage of described upper piston is positioned at the top of described pressure transmission hole;
Be set in the lower piston of described mandrel outer, the inwall of described lower piston coordinates with the outer wall of described axle, the outer wall of described lower piston is step surface, and described lower piston to appear on the stage terrace diameter little compared with the lower end diameter of terrace of leaving office, the described lower piston outer wall of terrace of appearing on the stage coordinates with the inwall of the leave from office terrace of described upper piston, and described lower piston and described upper piston are fixed by the second shear pin, described lower piston and described axle are fixed by the 3rd shear pin, and the terrace of appearing on the stage of described lower piston is positioned at the below of described pressure transmission hole;
Retaining ring, described retaining ring is arranged between described upper piston and described lower piston, and described retaining ring is positioned at bottom the inwall of leave from office terrace of described upper piston, described retaining ring and described upper piston are threaded connection, and the inwall of described lower piston is provided with the external screw thread with the screw-internal thread fit of described retaining ring;
To be arranged on below described lower piston and to be set in the slips of described mandrel outer;
To be arranged on below described slips and to be set in the cone of described mandrel outer;
Be set in described axle outer wall and be positioned at described cone lower end connect set lower contact;
With described the second coiled tubing setting lower contact and be connected, described second coiled tubing is set lower contact be connected by the second coiled tubing joint with described, and the bottom of described second coiled tubing can be connected with blanking plug.
Preferably, in above-mentioned coiled tubing speed tubing string, described hydraulic releasing comprises:
To give up top connection, described in give up top connection and described first coiled tubing joint be threaded connection;
To give up described in being set in the outer wall of top connection and the lower contact of giving up be threaded connection with described top connection of giving up, the lower end of described lower contact of giving up is provided with the first hole for taking up described lock dog, described in set in top connection and be provided with first groove corresponding with described first hole site;
Offset with the lower surface of described top connection of giving up and the sliding sleeve coordinated with the inwall of described lower contact of giving up, the upper end of described sliding sleeve is provided with the conical surface for support ball, described sliding sleeve is connected by the first shear pin with described lower contact of giving up, described sliding sleeve is provided with the first groove for taking up described lock dog, described first groove is positioned at the top in described first hole.
Preferably, in above-mentioned coiled tubing speed tubing string, also comprise:
Connecting cylinder, the upper end of described connecting cylinder and the lower end of described cone offset, and described connecting cylinder sets lower contact be threaded with described;
Be arranged on described axle and the described ball seat set between lower contact, the upper end of described ball seat and the lower end of described connecting cylinder offset, and the inwall of described ball seat is provided with the conical surface for support ball, and described ball seat is set lower contact be connected by the 4th shear pin with described;
Be arranged on the 3rd groove in described axle, be provided with lock ring in described 3rd groove, described lock ring is compressed by described ball seat;
Described axle being provided with the 4th groove, being provided with the spacing ring for preventing described cone landing in described 4th groove, described spacing ring embeds in described 4th groove.
Preferably, in above-mentioned coiled tubing speed tubing string, described connecting cylinder is provided with the first righting strip.
Preferably, in above-mentioned coiled tubing speed tubing string, described in set top connection outer wall be provided with the second righting strip.
Preferably, in above-mentioned coiled tubing speed tubing string, the outer wall of described slips is provided with the pawl of upper and lower both direction.
Preferably, in above-mentioned coiled tubing speed tubing string, described in top connection of giving up be connected by screw threads for fastening with described lower contact of giving up.
Preferably, in above-mentioned coiled tubing speed tubing string, the interior outside of described retaining ring is provided with saw-tooth thread.
Preferably, in above-mentioned coiled tubing speed tubing string, the inwall of described slips is provided with the blind slot of interlaced arrangement, and described blind slot is evenly arranged on slips.
As can be seen from technique scheme, the coiled tubing speed tubing string that the utility model provides, precalculated position is delivered to by under coiled tubing speed tubing string by continuous oil pipe device, the end of the second coiled tubing blocked by blanking plug, prevent liquid or other foreign material in gas well from entering in coiled tubing speed tubing string, infusion liquid in the first coiled tubing, liquid is upwards pushed away by the upper piston of pressure transmission hole by packer, lower piston pushes up downwards, the annular space that upper piston extruding packing element packing oil pipe and coiled tubing speed tubing string are formed, lower piston extruding slips, second coiled tubing is anchored in oil pipe, realize setting of hanger, then effect is set to infusion liquid in the annular space of oil pipe and coiled tubing speed tubing string to check, after having inspected, infusion liquid in coiled tubing speed tubing string, build the pressure in coiled tubing speed tubing string, after pressure acquires a certain degree, destroy blanking plug, the annular space that coiled tubing speed tubing string and oil pipe and the second coiled tubing are formed is communicated with, hydraulic releasing to be given up operation to hanger, now losing manual concrete steps is, pitching in the first coiled tubing, the top support ball of sliding sleeve, infusion liquid in the first coiled tubing, after having suppressed certain pressure, first shear pin is cut off, sliding sleeve falls, the lock dog be arranged in the first hole of lower contact of giving up slips in the first groove of sliding sleeve, the top connection that sets of hanger is separated with lower contact of giving up, realization is given up operation, after having given up by continuous oil pipe device by the first coiled tubing, first coiled tubing joint and hydraulic releasing propose, now coiled tubing speed tubing string is suspended on the assigned address of gas well, go into operation.The device that this programme provides, coiled tubing speed tubing string is set the assigned address at oil pipe, relatively and the mode set in prior art by coiled tubing speed tubing string at well head, shorten the length of the coiled tubing of use, thus the problem that can solve the gas well problem that causes not in time due to coiled tubing supply and can not solve in time.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the coiled tubing speed tubing string that Fig. 1 provides for the utility model embodiment;
The structural representation of the hydraulic releasing that Fig. 2 provides for the utility model embodiment;
The structural representation on the top of the hanger that Fig. 3 provides for the utility model embodiment;
The structural representation of the bottom of the hanger that Fig. 4 provides for the utility model embodiment.
1, first coiled tubing, 2, first coiled tubing joint, 3, hydraulic releasing, 31, to give up top connection, 32, to give up lower contact, 33, sliding sleeve, 34, first shear pin, 35, lock dog, 4, hanger, 41, axle, 42, set top connection, 43, packing element, 44, baffle ring, 45, upper piston, 46, lower piston, 47, second shear pin, 48, 3rd shear pin, 49, retaining ring, 5, second coiled tubing, 50, slips, 51, cone, 52, set lower contact, 6, second coiled tubing joint, 7, connecting cylinder, 8, blanking plug, 9, ball seat, 10, lock ring, 11, spacing ring.
Detailed description of the invention
The utility model discloses a kind of coiled tubing speed tubing string, to shorten the use length of coiled tubing, ensure the timely solution of gas well liquid loading problem.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-Fig. 4, the structural representation of the coiled tubing speed tubing string that Fig. 1 provides for the utility model embodiment; The structural representation of the hydraulic releasing that Fig. 2 provides for the utility model embodiment; The structural representation on the top of the hanger that Fig. 3 provides for the utility model embodiment; The structural representation of the bottom of the hanger that Fig. 4 provides for the utility model embodiment.
A kind of coiled tubing speed tubing string, comprising:
The first coiled tubing 1 be connected with continuous oil pipe device;
The hydraulic releasing 3 be connected by the first coiled tubing joint 2 with the first coiled tubing 1, hydraulic releasing 3 realizes being separated of hanger 4 and the first coiled tubing 1;
Be arranged on the hanger 4 below hydraulic releasing 3, hanger 4 comprises:
Axle 41, axle 41 offers pressure transmission hole, by pressure transmission hole to infusion liquid between upper piston 45 and lower piston 46;
Be set in axle 41 outside and be threaded with axle 41 set top connection 42, set top connection 42 and be connected by lock dog 35 with hydraulic releasing 3;
Baffle ring 44, baffle ring 44 is set in the outer wall of axle 41 and the upper surface of baffle ring 44 offsets with the lower surface setting top connection 42;
Packing element 43, packing element 43 is set in the outer wall of axle 41, and the lower surface of packing element 43 upper surface and baffle ring 44 offsets, and realizes annular space packing between oil pipe and the second coiled tubing 5;
Be set in the outside of axle 41 and the upper piston 45 offseted with packing element 43 lower surface, the inwall of upper piston 45 is step surface, and the diameter of the terrace of appearing on the stage of upper piston 45 is little compared with the diameter of terrace of leaving office, and the terrace of appearing on the stage of upper piston 45 is positioned at the top of pressure transmission hole;
Be set in the lower piston 46 outside axle 41, the inwall of lower piston 46 coordinates with the outer wall of axle 41, the outer wall of lower piston 46 is step surface, and lower piston 46 to appear on the stage terrace diameter little compared with the lower end diameter of terrace of leaving office, lower piston 46 outer wall of terrace of appearing on the stage coordinates with the inwall of the leave from office terrace of upper piston 45, and lower piston 46 is fixed by the second shear pin 47 with upper piston 45, lower piston 46 is fixed by the 3rd shear pin 48 with axle 41, and the terrace of appearing on the stage of lower piston 46 is positioned at the below of pressure transmission hole;
Retaining ring 49, retaining ring 49 is arranged between upper piston 45 and lower piston 46, and retaining ring 49 is positioned at bottom the inwall of leave from office terrace of upper piston 45, retaining ring 49 and upper piston 45 are threaded connection, the inwall of lower piston 46 is provided with the external screw thread with the screw-internal thread fit of retaining ring 49, prevent upper piston 45 from gliding, what affect packing element 43 sets effect;
To be arranged on below lower piston 46 and the slips 50 be set in outside axle 41, the second coiled tubing 5 is anchored in oil pipe;
To be arranged on below slips 50 and the cone 51 be set in outside axle 41;
Be set in axle 41 outer wall and be positioned at cone 51 lower end connect set lower contact 52;
With set the second coiled tubing 5, second coiled tubing 5 that lower contact 52 is connected and set lower contact 52 and be connected by the second coiled tubing joint 6, the bottom of the second coiled tubing 5 can be connected with blanking plug 8.
Preferably, set between lower contact 52 and the second coiled tubing joint 6 and be provided with universal joint or rotating short-knot, conveniently can setting lower contact 52 to be connected with the second coiled tubing joint 6, setting the connection of lower contact 52 and the second coiled tubing joint 6 and universal joint or rotating short-knot for being threaded.
Generally that coiled tubing is suspended on well head in prior art, coiled tubing is hung from the well head of gas well, the use length of coiled tubing is very long, domestic production coiled tubing limited in one's ability, effectively can not meet the use of coiled tubing, gas well problem is caused not solve timely and effectively, if adopt external import, then the corresponding rising of cost.In order to solve the problem, second coiled tubing 5 is set the assigned address in oil pipe by hanger 4 by the device that this programme provides, namely the length of the oil pipe between gas well mouth to assigned address is eliminated, shorten the length of the oil pipe of use, save certain material, and do not need, from external import, to reduce cost of production.
The installation of the coiled tubing speed tubing string that this programme provides also needs the suspension equipment using coiled tubing speed tubing string of the prior art, object is the assigned address the second coiled tubing 5 being sent to gas well, is then set in oil pipe by the hanger 4 in this programme by the second coiled tubing.
The device that this programme provides comprises: the first coiled tubing 1, first coiled tubing joint 2, hydraulic releasing 3, hanger 4, second coiled tubing joint 6, second coiled tubing 5 and blanking plug 8, said apparatus is in turn connected to form coiled tubing speed tubing string.
The concrete use step of the device that this programme provides is:
The first step, by the continuous oil pipe device of Operation Tubing Aggregate, above-mentioned coiled tubing speed tubing string is sent into down-hole assigned address, the end of the second coiled tubing 5 blocked by blanking plug 8, prevents the liquid in oil pipe or other foreign material from entering coiled tubing speed tubing string;
Second step, infusion liquid in the first coiled tubing 1, liquid enters between upper piston 45 and lower piston 46 by the pressure transmission hole in the axle 41 of hanger 4, under the effect of fluid pressure, second shear pin 47 and the 3rd shear pin 48 are cut off, upper piston 45 moves upward along the axis of axle 41, upper piston 45 drives retaining ring 49 to move and extrudes packing element 43, annular space between packing element 43 packing second coiled tubing 5 and oil pipe, lower piston 46 moves downward along the axis of axle 41, lower piston 46 extrudes slips 50, slips 50 realizes the grappling to the second coiled tubing, after lower piston 46 moves to assigned address, threaded engagement on screw thread on lower piston 46 and retaining ring 49, prevent upper piston 45 from moving downward, stop packing element 43 and slips 50 deblocking, packing element 43 realizes the packing of annular space between coiled tubing speed tubing string and oil pipe, slips 50 realizes the assigned address of coiled tubing speed tubing string bidirectionally anchoring at oil pipe,
3rd step, whether the packing of inspection annular space reaches requirement, avoids because the bad impact of packing effect is produced;
4th step, infusion liquid in coiled tubing speed tubing string, destroys blanking plug 8, is communicated with by the annular space that coiled tubing speed tubing string and the second coiled tubing 5 and oil pipe are formed, and facilitates the pitching operation in subsequent step and produces;
5th step, hydraulic releasing 3 pairs of hangers 4 are given up operation;
6th step, proposes gas well by continuous oil pipe device by the first coiled tubing, the first coiled tubing joint 2 and hydraulic releasing 3, goes into operation.
The hydraulic releasing 3 that this programme adopts comprises:
Give up top connection 31, give up top connection 31 and the first coiled tubing joint 2 are threaded connection;
Be set in the outer wall of top connection 31 of giving up and the lower contact 32 of giving up be threaded connection with top connection 31 of giving up, the give up lower end of lower contact 32 is provided with the first hole for taking up lock dog 35, sets in top connection 42 and is provided with first groove corresponding with the first hole site;
Offset with the lower surface of top connection 31 of giving up and the sliding sleeve 33 coordinated with the inwall of lower contact 32 of giving up, the upper end of sliding sleeve 33 is provided with the conical surface for support ball, sliding sleeve 33 is connected by the first shear pin 34 with lower contact 32 of giving up, sliding sleeve 33 is provided with the first groove for taking up lock dog 35, first groove is positioned at the top in the first hole, and the setting of the first groove can facilitate the follow-up recovery to hanger 4.
Specifically losing manual implementation procedure is: pitching in the first coiled tubing 1, the upper surface support ball of sliding sleeve 33, continue to infusion liquid in the first coiled tubing 1, after reaching certain fluid pressure in the first coiled tubing 1, first shear pin 34 is cut off, sliding sleeve 33 glides under the effect of fluid pressure, when the first groove on sliding sleeve 33 and first hole site of giving up in lower contact 32 to time corresponding lock dog 35 slips in the first groove under the effect of axial force, realize lock dog 35 to deviate from the first groove setting top connection 42, now give up lower contact 32 with set top connection 42 and be separated, realization is given up operation.
In order to realize the deblocking of hanger 4, also comprise:
Connecting cylinder 7, the upper end of connecting cylinder 7 and the lower end of cone 51 offset, connecting cylinder 7 with set lower contact 52 and be threaded;
Be arranged on axle 41 and set the ball seat 9 between lower contact 52, the upper end of ball seat 9 and the lower end of connecting cylinder 7 offset, and the inwall of ball seat 9 is provided with the conical surface for support ball, ball seat 9 with set lower contact 52 and be connected by the 4th shear pin;
Be arranged on the 3rd groove in axle 41, be provided with lock ring 10 in the 3rd groove, lock ring 10 is compressed by ball seat 9;
Axle 41 is provided with the 4th groove, be provided with the spacing ring 11 for preventing cone 51 landing in the 4th groove, spacing ring 11 embeds in the 4th groove.
Concrete deblocking process is: pitching in the first coiled tubing 1, the inwall support ball of ball seat 9, infusion liquid in the first coiled tubing 1, after reaching certain pressure, 4th shear pin is cut off, set lower contact 52 pairs of ball seats 9 and lose extruding backup effect, lock ring 10 is separated with the 3rd groove, ball seat 9 is at the falls downward of fluid pressure, now connecting cylinder 7 loses the supporting role of ball seat 9, connecting cylinder 7 and set lower contact and glide, slips 50 and packing element 43 rely on natural resiliency to shrink, realize deblocking, after hanger 4 deblocking, device can carry out secondary or repeatedly utilize, reduce spillage of material.Cone 51, connecting cylinder 7 and set lower contact 52 dropping process in can be stuck in the position of spacing ring 11, ensure that the second coiled tubing 5 can not fall in well.
In order to ensure the anchoring effect setting effect and slips 50 at packing element 43, connecting cylinder 7 is provided with the first righting strip, ensureing can be placed in the middle in process at packing element 43 and setting of slips 50, can not offset.
In order to ensure the anchoring effect setting effect and slips 50 of packing element 43 further, the outer wall setting top connection 42 is provided with the second righting strip, and ensureing can be placed in the middle in process at packing element 43 and setting of slips 50, can not offset.
In order to ensure the effect of the grappling of slips 50, the outer wall of slips 50 being provided with the pawl of upper and lower both direction, after setting, realizing bidirectionally anchoring, ensure that slips 50 can not move up and down.
In order to ensure to set effect, the interior outside of retaining ring 49 is provided with saw-tooth thread, externally threaded jagged towards the opposite on internal thread on retaining ring 49 and lower piston 46, can ensure that retaining ring 49 can move upward smoothly under the drive of upper piston 45, after having set, the external screw thread on the internal thread on retaining ring 49 and lower piston 46 offsets, and can effectively prevent upper piston 45 from moving downward, prevent packing element 43 deblocking, ensure to set effect.
In order to ensure the elasticity of slips 50, the inwall of slips 50 is provided with the blind slot of interlaced arrangement, and blind slot being evenly arranged on slips 50, making slips 50 have good elasticity.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a coiled tubing speed tubing string, is characterized in that, comprising:
The first coiled tubing (1) be connected with continuous oil pipe device;
The hydraulic releasing (3) be connected by the first coiled tubing joint (2) with described first coiled tubing (1);
Be arranged on the hanger (4) of described hydraulic releasing (3) below, described hanger (4) comprising:
Axle (41), (41) offer pressure transmission hole to described axle;
Be set in described axle (41) outside and be threaded with described axle (41) set top connection (42), described in set top connection (42) and be connected by lock dog (35) with described hydraulic releasing (3);
Baffle ring (44), described baffle ring (44) is set in the outer wall of described axle (41) and the upper surface of described baffle ring (44) and the described lower surface setting top connection (42) offset;
Packing element (43), described packing element (43) is set in the outer wall of described axle (41), and the lower surface of described packing element (43) upper surface and described baffle ring (44) offsets;
Be set in the outside of described axle (41) and the upper piston (45) offseted with described packing element (43) lower surface, the inwall of described upper piston (45) is step surface, the diameter of the terrace of appearing on the stage of described upper piston (45) is little compared with the diameter of terrace of leaving office, and the terrace of appearing on the stage of described upper piston (45) is positioned at the top of described pressure transmission hole;
Be set in the lower piston (46) in described axle (41) outside, the inwall of described lower piston (46) coordinates with the outer wall of described axle (41), the outer wall of described lower piston (46) is step surface, and described lower piston (46) to appear on the stage terrace diameter little compared with the lower end diameter of terrace of leaving office, the appear on the stage outer wall of terrace of described lower piston (46) coordinates with the inwall of the leave from office terrace of described upper piston (45), and described lower piston (46) is fixed by the second shear pin (47) with described upper piston (45), described lower piston (46) is fixed by the 3rd shear pin (48) with described axle (41), the terrace of appearing on the stage of described lower piston (46) is positioned at the below of described pressure transmission hole,
Retaining ring (49), described retaining ring (49) is arranged between described upper piston (45) and described lower piston (46), and described retaining ring (49) is positioned at bottom the inwall of the leave from office terrace of described upper piston (45), described retaining ring (49) and described upper piston (45) are threaded connection, and the inwall of described lower piston (46) is provided with the external screw thread with the screw-internal thread fit of described retaining ring (49);
Be arranged on described lower piston (46) below and the slips (50) be set in outside described axle (41);
Be arranged on described slips (50) below and the cone (51) be set in outside described axle (41);
Be set in described axle (41) outer wall and be positioned at described cone (51) lower end connect set lower contact (52);
With described the second coiled tubing (5) setting lower contact (52) and be connected, described second coiled tubing (5) is set lower contact (52) be connected by the second coiled tubing joint (6) with described, and the bottom of described second coiled tubing (5) can be connected with blanking plug (8).
2. coiled tubing speed tubing string according to claim 1, is characterized in that, described hydraulic releasing (3) comprising:
To give up top connection (31), described in top connection (31) of giving up be threaded connection with described first coiled tubing joint (2);
To give up described in being set in the outer wall of top connection (31) and the lower contact of giving up (32) be threaded connection with described top connection of giving up (31), the lower end of described lower contact of giving up (32) is provided with the first hole for taking up described lock dog (35), described in set in top connection (42) and be provided with first groove corresponding with described first hole site;
Offset with the lower surface of described top connection of giving up (31) and the sliding sleeve (33) coordinated with the inwall of described lower contact of giving up (32), the upper end of described sliding sleeve (33) is provided with the conical surface for support ball, described sliding sleeve (33) is connected by the first shear pin (34) with described lower contact of giving up (32), described sliding sleeve (33) is provided with the first groove for taking up described lock dog (35), described first groove is positioned at the top in described first hole.
3. coiled tubing speed tubing string according to claim 1, is characterized in that, also comprise:
Connecting cylinder (7), the upper end of described connecting cylinder (7) and the lower end of described cone (51) offset, and described connecting cylinder (7) sets lower contact (52) be threaded with described;
Be arranged on described axle (41) and the described ball seat (9) set between lower contact (52), the upper end of described ball seat (9) and the lower end of described connecting cylinder (7) offset, the inwall of described ball seat (9) is provided with the conical surface for support ball, and described ball seat (9) is set lower contact (52) be connected by the 4th shear pin with described;
Be arranged on the 3rd groove in described axle (41), be provided with lock ring (10) in described 3rd groove, described lock ring (10) is compressed by described ball seat (9);
Described axle (41) is provided with the 4th groove, be provided with the spacing ring (11) for preventing described cone (51) landing in described 4th groove, described spacing ring (11) embeds in described 4th groove.
4. coiled tubing speed tubing string according to claim 3, is characterized in that, (7) are provided with the first righting strip to described connecting cylinder.
5. coiled tubing speed tubing string according to claim 1, is characterized in that, described in set top connection (42) outer wall be provided with the second righting strip.
6. coiled tubing speed tubing string according to claim 1, is characterized in that, the outer wall of described slips (50) is provided with the pawl of upper and lower both direction.
7. coiled tubing speed tubing string according to claim 1, is characterized in that, described in top connection (31) of giving up be connected by screw threads for fastening with described lower contact of giving up (32).
8. coiled tubing speed tubing string according to claim 1, is characterized in that, the interior outside of described retaining ring (46) is provided with saw-tooth thread.
9. coiled tubing speed tubing string according to claim 1, is characterized in that, described slips (50) is provided with the blind slot of interlaced arrangement, and described blind slot is evenly arranged on described slips (50).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420689486.XU CN204326985U (en) | 2014-11-17 | 2014-11-17 | A kind of coiled tubing speed tubing string |
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| CN201420689486.XU CN204326985U (en) | 2014-11-17 | 2014-11-17 | A kind of coiled tubing speed tubing string |
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