阅读说明：本技术 捞矛驱动装置及打捞矛 (Fishing spear driving device and fishing spear ) 是由 杨一迪 高思源 史雅楠 李浩锐 曲良彬 刘云云 张家伟 刘浩 王龙瓛 熊坤 任广 于 2019-10-23 设计创作，主要内容包括：本发明涉及捞矛驱动装置及打捞矛。捞矛驱动装置包括：回转体,用于固定连接捞矛；回转体的外周面上设有用于与所述支撑套筒螺旋配合的外连续螺旋结构或者设有用于与所述支撑套筒的内连续螺旋结构配合的外配合结构,以在受到轴向顶压时在支撑套筒引导下回转；支撑件,可向外弹出、向内收回的往复活动装配在所述回转体上,向外弹出的支撑件用于支撑在所述支撑套筒上；弹性件,安装在所述回转体上,向支撑件施加迫使其向外弹出的弹性作用力；在回转体与所述支撑套筒装配时,将支撑件向内收回以使回转体可反向回转的向下装入支撑套筒中,回转体正向转动设定角度以向上运动至设定位置时,由所述弹性件驱使所述支撑件向外弹出。(The invention relates to a fishing spear driving device and a fishing spear. The drag spear drive device comprises: the revolving body is used for fixedly connecting the fishing spear; the outer peripheral surface of the revolving body is provided with an outer continuous spiral structure which is spirally matched with the supporting sleeve or an outer matching structure which is matched with the inner continuous spiral structure of the supporting sleeve so as to revolve under the guidance of the supporting sleeve when being axially jacked; the supporting piece can be popped outwards and retracted inwards and is movably assembled on the revolving body in a reciprocating way, and the support piece popped outwards is used for being supported on the supporting sleeve; the elastic element is arranged on the revolving body and applies elastic acting force for forcing the supporting element to be outwards popped; when the revolving body is assembled with the supporting sleeve, the supporting piece is retracted inwards to enable the revolving body to be reversely revolved and be installed into the supporting sleeve downwards, and when the revolving body rotates forwards for a set angle to move upwards to a set position, the supporting piece is driven by the elastic piece to pop out outwards.)

1. Drag for lance drive arrangement, its characterized in that includes:

the revolving body is used for fixedly connecting the fishing spear so as to drive the fishing spear to rotate when revolving in the corresponding supporting sleeve;

the outer peripheral surface of the revolving body is provided with an outer continuous spiral structure which is spirally matched with the supporting sleeve or an outer matching structure which is matched with the inner continuous spiral structure of the supporting sleeve so as to revolve under the guidance of the supporting sleeve when being axially jacked;

the supporting piece can be popped outwards and retracted inwards and is movably assembled on the revolving body in a reciprocating way, and the support piece popped outwards is used for being supported on the supporting sleeve;

the elastic element is arranged on the revolving body and applies elastic acting force for forcing the supporting element to be outwards popped;

when the revolving body is assembled with the supporting sleeve, the supporting piece is retracted inwards to enable the revolving body to be reversely revolved and be installed into the supporting sleeve downwards, and when the revolving body rotates forwards for a set angle to move upwards to a set position, the supporting piece is driven by the elastic piece to pop out outwards.

2. The spear drive of claim 1 wherein the support is an outwardly sprung inwardly retracting catch pin radially of the body of revolution.

3. The trip spear, its characterized in that includes:

the fishing body is provided with a fishing head and is used for being connected with the fishing tool string to drive the fishing spear to lift and lower;

the supporting sleeve is fixedly connected to the fishing body;

the rotary body is assembled in the supporting sleeve, a spiral mechanism for driving the rotary body to rotate in the supporting sleeve when the rotary body is axially jacked is arranged between the rotary body and the supporting sleeve, and the supporting sleeve is provided with a blocking platform for supporting and matching with the rotary body so as to prevent the support body from falling off downwards;

the fishing spear is fixedly connected to the revolving body so as to be driven to rotate by the revolving body, and therefore the steel wire to be fished is wound on the fishing spear;

the supporting piece can be popped outwards and retracted inwards and is movably assembled on the revolving body in a reciprocating way, and the support piece popped outwards is used for being supported on the supporting sleeve;

the elastic element is arranged on the revolving body and applies elastic acting force for forcing the supporting element to be outwards popped;

when the revolving body is assembled with the supporting sleeve, the supporting piece is retracted inwards to enable the revolving body to be assembled in the supporting sleeve in a reverse revolving mode, and when the revolving body rotates forwards for a set angle to move upwards to a set position, the supporting piece is driven to pop out by the elastic piece.

4. The fishing spear of claim 3 wherein the support is an outwardly sprung inwardly retracting catch pin in the radial direction of the swivel.

5. The fishing spear of claim 4 wherein the resilient member is a compression spring disposed within the body and extending radially of the body.

6. The fishing spear of claim 5 wherein the inner wall of the supporting sleeve is provided with a spiral guide groove, the revolving body is provided with an external matching structure matched with the spiral guide groove, the spiral guide groove and the external matching structure form the spiral mechanism, one end of the stop pin far away from the pressure spring is provided with a hemispherical head, and the diameter of the hemispherical head is larger than the width of the spiral guide groove.

7. The fishing spear of any one of claims 3-6 wherein the support is a frangible piece made of a frangible material.

8. The fishing spear of any one of claims 3-6 wherein the lower end of the support sleeve is provided with a circumferential guide surface on the periphery of the fishing spear, the radial dimension of the circumferential guide surface decreasing from bottom to top to guide the fishing wire under the swivel and press the swivel axially.

9. The fishing spear of any one of claims 3-6 wherein the fishing spear is a central fishing spear, the lower end of the support sleeve is fixedly provided with outer fishing spears evenly distributed around the central fishing spear, and the outer fishing spears are provided with outer fishing hooks extending obliquely upwards towards the inner side of the central fishing spear.

10. The fishing spear of any one of claims 3-6 wherein the screw mechanism is adapted such that when the rotator is rotated by a set angle, the support member is exposed from the support sleeve and springs outwardly under the resilient force of the resilient member to bear on the upper end surface of the support sleeve.

Technical Field

The invention relates to the field of oil and gas field fishing equipment, in particular to a fishing spear driving device and a fishing spear.

Background

At present, the steel wire is frequently used for oil well testing operation and throwing and fishing operation in the development process of an oil and gas field, but the used steel wire often drops in the oil well in the testing process, so that a special fishing tool is needed for steel wire fishing. There are some fishing spears in the prior art, for example, a fishing spear for steel wire falling in an over-reducing pipe column disclosed in the chinese patent application with the application publication No. CN103573204A, which includes a central rod, i.e., a fishing spear, and a fishing hook is disposed on the central rod. But because coiled tubing internal diameter in the oil well is little, and inner space is narrow, does not have sufficient space to make the steel wire head of falling into the well form sufficient bending angle, leads to the interior lance to be difficult to grab the steel wire of falling into the well, and causes the fishing operation failure.

Disclosure of Invention

The invention aims to provide a fishing spear to solve the technical problem that a fishing hook of the existing fishing tool is difficult to grab a steel wire falling into a well; meanwhile, the invention also provides a fishing spear driving device for the fishing spear.

The technical scheme of the fishing spear driving device is as follows:

the drag spear drive device comprises: the revolving body is used for fixedly connecting the fishing spear so as to drive the fishing spear to rotate when revolving in the corresponding supporting sleeve; the outer peripheral surface of the revolving body is provided with an outer continuous spiral structure which is spirally matched with the supporting sleeve or an outer matching structure which is matched with the inner continuous spiral structure of the supporting sleeve so as to revolve under the guidance of the supporting sleeve when being axially jacked; the supporting piece can be popped outwards and retracted inwards and is movably assembled on the revolving body in a reciprocating way, and the support piece popped outwards is used for being supported on the supporting sleeve; the elastic element is arranged on the revolving body and applies elastic acting force for forcing the supporting element to be outwards popped; when the revolving body is assembled with the supporting sleeve, the supporting piece is retracted inwards to enable the revolving body to be reversely revolved and be installed into the supporting sleeve downwards, and when the revolving body rotates forwards for a set angle to move upwards to a set position, the supporting piece is driven by the elastic piece to pop out outwards.

The beneficial effects are that: during the use, will drag for lance fixed connection on the solid of revolution, then with the solid of revolution assembly in the support sleeve, receive the ascending axial top pressure of steel wire after the solid of revolution, the solid of revolution revolves in the support sleeve under the effect of outer continuous helical structure or outer cooperation structure to it is rotatory to drive to drag for the lance, thereby twine the steel wire on dragging for the lance, so that snatch the steel wire, the solid of revolution drives simultaneously and drags for lance upward movement, in entering into the support sleeve with the drive steel wire, guaranteed to drag for the stability that the lance snatchs the steel wire. In addition, the solid of revolution upwards rotates behind the settlement angle, and the support piece that sets up on it stretches out under the elastic force of elastic component to support on the support sleeve, guarantee the fastness of steel wire winding on fishing spear.

Further, the supporting part is a stop pin which is popped out outwards and shrunk inwards along the radial direction of the revolving body.

The beneficial effects are that: the stop pin is outwards popped out and inwards contracted along the radial direction of the revolving body, so that the stop pin can conveniently stretch out and draw back in the revolving body.

The technical scheme of the fishing spear comprises the following steps:

the fishing spear includes: the fishing body is provided with a fishing head and is used for being connected with the fishing tool string to drive the fishing spear to lift and lower; the supporting sleeve is fixedly connected to the fishing body; the rotary body is assembled in the supporting sleeve, a spiral mechanism for driving the rotary body to rotate in the supporting sleeve when the rotary body is axially jacked is arranged between the rotary body and the supporting sleeve, and the supporting sleeve is provided with a blocking platform for supporting and matching with the rotary body so as to prevent the support body from falling off downwards; the fishing spear is fixedly connected to the revolving body so as to be driven to rotate by the revolving body, and therefore the steel wire to be fished is wound on the fishing spear; the supporting piece can be popped outwards and retracted inwards and is movably assembled on the revolving body in a reciprocating way, and the support piece popped outwards is used for being supported on the supporting sleeve; the elastic element is arranged on the revolving body and applies elastic acting force for forcing the supporting element to be outwards popped; when the revolving body is assembled with the supporting sleeve, the supporting piece is retracted inwards to enable the revolving body to be assembled in the supporting sleeve in a reverse revolving mode, and when the revolving body rotates forwards for a set angle to move upwards to a set position, the supporting piece is driven to pop out by the elastic piece.

The beneficial effects are that: during the use, receive the ascending axial roof pressure force of steel wire at the solid of revolution after, the solid of revolution is gyration in the supporting sleeve under screw mechanism's effect to it is rotatory to drive the lance of dragging for, thereby twine the steel wire on dragging for the lance, so that snatch the steel wire, the solid of revolution drives simultaneously and drags for lance upward movement, in order to drive the steel wire and enter into the supporting sleeve, has guaranteed to drag for the lance and has snatched the stability of steel wire. In addition, the solid of revolution upwards rotates behind the settlement angle, and the support piece that sets up on it stretches out under the elastic force of elastic component to support on the support sleeve, guarantee the fastness of steel wire winding on fishing spear.

Further, the supporting part is a stop pin which is popped out outwards and shrunk inwards along the radial direction of the revolving body.

The beneficial effects are that: the stop pin is outwards popped out and inwards contracted along the radial direction of the revolving body, so that the stop pin can conveniently stretch out and draw back in the revolving body.

Furthermore, the elastic element is a pressure spring which is arranged in the revolving body and extends along the radial direction of the revolving body.

The beneficial effects are that: the pressure spring is directly assembled in the revolving body, an outward elastic acting force is applied to the supporting piece through the pressure spring, the revolving body is popped out after the supporting piece loses the limitation, the revolving body is supported on the supporting sleeve, the popping structure is simple, and the revolving body is conveniently supported on the supporting sleeve.

Furthermore, a spiral guide groove is formed in the inner wall of the supporting sleeve, an outer matching structure matched with the spiral guide groove is formed in the revolving body, the spiral guide groove and the outer matching structure form the spiral mechanism, one end, far away from the pressure spring, of the stop pin is provided with a hemispherical head, and the diameter of the hemispherical head is larger than the width of the spiral guide groove.

The beneficial effects are that: the blocking pin is prevented from being blocked in the spiral guide groove in the upward movement process of the revolving body.

Further, the support is a brittle member made of a brittle material.

The beneficial effects are that: the solid of revolution supports back on the support sleeve, if lift and meet the card, then can shake disconnected support piece, makes the solid of revolution reverse gyration under the action of gravity, simultaneously, drags for lance counter-rotation and downstream, and the winding is along with draging for lance downstream and removing the winding to the steel wire on dragging for the lance, avoids causing the secondary operation accident, is convenient for implement to salvage once more.

Furthermore, the lower end of the supporting sleeve is provided with a circumferential guide surface on the periphery of the fishing spear, and the radial dimension of the circumferential guide surface is gradually reduced from bottom to top so as to guide the fished steel wire to the lower part of the revolving body and press the revolving body along the axial direction.

The beneficial effects are that: the circumferential guide surface is arranged, so that the salvaged steel wire can be conveniently led into the lower part of the revolving body and can be jacked against the revolving body.

Further, drag for the lance and drag for the lance in the center, the support sleeve lower extreme sets firmly around the outer lance of dragging for of center drag for lance equipartition, outer lance orientation drag for the inside of center drag for the lance is equipped with the outer hook of dragging for that the slope upwards extends.

The beneficial effects are that: set up outer bailing spear around central bailing spear, and set up outer fishing hook on outer bailing spear, at the solid of revolution area central bailing spear gyration in-process, the steel wire winding is on central bailing spear and outer fishing hook, makes central bailing spear and outer fishing hook snatch the steel wire jointly, effectively improves salvage operation success rate.

Further, the screw mechanism meets the requirement that after the revolving body rotates for a set angle, the supporting part is exposed from the supporting sleeve and springs outwards under the elastic force of the elastic part so as to be supported on the upper end face of the supporting sleeve.

The beneficial effects are that: the supporting piece is supported by the upper end face of the supporting sleeve, so that a supporting piece inserting groove matched with the supporting piece is omitted on the inner wall of the supporting sleeve, and the structure is simplified.

Drawings

FIG. 1 is a schematic view of the fishing spear of the present invention assembled within a support sleeve;

FIG. 2 is a schematic view of the fishing spear of the present invention supported on a support sleeve;

FIG. 3 is a bottom view of FIG. 1;

in the figure: 1-fishing head; 2-an outer sleeve; 3-a solid of revolution; 4-a support sleeve; 5-stop pin; 6-blocking the platform; 7-a circumferential guiding surface; 8-fishing out the spear; 9-outer fishing hook; 10-inner fishing hook; 11-central fishing spear.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

In the embodiment of the fishing spear of the present invention, as shown in fig. 1 and 3, the fishing spear includes a supporting sleeve 4 extending in an up-down direction, a rotation body 3 is disposed in the supporting sleeve 4, and the fishing spear is fixedly connected to a lower end of the rotation body 3 to drive the fishing spear to rotate when the rotation body 3 rotates. The fishing spears on the revolving body 3 are central fishing spears 11 relative to the outer fishing spears 8, and the outer fishing spears 8 are uniformly distributed with four fishing spears 11 around the central fishing spears.

Specifically, be equipped with on the center bailing spear 11 along upper and lower direction and be equipped with in the five levels fishhook 10, the quantity of fishhook 10 in every level is four and evenly distributed on the circumference of center bailing spear 11, is equipped with outer fishhook 9 on the outer bailing spear 8, and outer fishhook 9 on each outer bailing spear 8 is equipped with the level four, from the top down in proper order align to grid, and the directional inboard of direction to fishhook 10 salvages the steel wire in the cooperation.

The outer side thread of the supporting sleeve 4 is assembled with an outer sleeve 2, the upper surface of the outer sleeve 2 is fixedly connected with a fishing head 1, and the fishing head 1 is connected with an upper fishing tool string during fishing. In other embodiments, the supporting sleeve is fixed on the outer sleeve by welding, and a top cover of the outer sleeve is required to be opened so as to facilitate the installation of the revolving body in the supporting sleeve.

In this embodiment, the lower end of the supporting sleeve 4 is welded with the blocking platform 6, and the blocking platform 6 is in supporting fit with the revolving body 3 to prevent the revolving body 3 from moving downwards. The lower side of the abutment 6 is provided with a circumferential guiding surface 7, preferably an arc-shaped guiding surface, at the periphery of the central spear 11, the radial dimension of the circumferential guiding surface 7 decreasing from bottom to top to guide the wire to be fished under the rotor 3 and press the rotor 3 axially. The four outer fishing spears 8 are fixedly connected with the lower side surface of the baffle table 6. In other embodiments, the abutment is welded to the inner side wall of the support sleeve, and the circumferential guide surface is provided on the underside of the support sleeve.

As shown in fig. 1 and 2, a spiral guide groove is formed on the inner wall of the support sleeve 4, an external fitting structure which is matched with the spiral guide groove on the support sleeve 4 is arranged on the rotation surface of the rotation body 3, the external fitting structure is a spiral protrusion, and the spiral guide groove and the spiral protrusion form a spiral mechanism. Can rotatory the rising under screw mechanism's guide when the solid of revolution 3 receives ascending axial roof pressure effort, because center drag for lance 11 fixed connection on the solid of revolution 3, drive center drag for lance 11 rotatory the rising when the solid of revolution 3 rotatory the rising to with the steel wire winding on center drag for lance 11.

In this embodiment, the lower portion of the rotator 3 is formed with a long hole extending in the radial direction, and the long hole is provided therein with a stopper pin 5 capable of extending and retracting in the radial direction and a compression spring for applying an elastic force to the stopper pin 5 to extend the stopper pin 5 outward out of the rotator 3, wherein the stopper pin constitutes a support member and the compression spring constitutes an elastic member. One end of the stop pin 5, which is far away from the pressure spring, is provided with a hemispherical head, and the diameter of the hemispherical head is larger than the width of the spiral guide groove on the support sleeve 4, so that the friction is favorably reduced; meanwhile, after the revolving body 3 rotates and rises for a set angle, the supporting sleeve 4 does not stop the stop pin 5, the stop pin 5 extends out of the revolving body 3, and the hemispherical head of the stop pin 5 can guide the stop pin 5 to the upper end surface of the supporting sleeve 4, so that the guiding effect is achieved. It should be noted that the upper end surface of the support sleeve is a support end surface for blocking the stopper pin 5 in the up-down direction so that the rotation body 3 is supported on the support sleeve 4. In order to meet the stability, the number of the stop pins is two, and the number of the corresponding pressure springs is two. The stop pin is generally made of aluminum, copper or carbon steel.

In this embodiment, backing pin 5 has big footpath section and path section, and big footpath section and pressure spring roof pressure cooperation, path section be used for with the up end support cooperation of support sleeve 4, be equipped with in the slot hole and be used for 5 spacing limiting plates to the backing pin to avoid the backing pin transition to pop out, the limiting plate has the perforation that supplies the path section to pass, the spacing cooperation of the medial surface of limiting plate and the lateral surface of big footpath section. In other embodiments, no limiting plate may be provided, and one end of the pressure spring is fixed to the bottom of the long hole and the other end is fixed to the stop pin.

When the fishing spear is used for fishing, the outer sleeve 2 is screwed off from the supporting sleeve 4, then the revolving body 3 with the central fishing spear 11 is arranged in the supporting sleeve 4, at the moment, the stop pin 5 is required to be contracted into the revolving body 3 by overcoming the elastic acting force of the pressure spring, then the revolving body 3 is rotated downwards until the lower end of the revolving body 3 is pressed against the stop table 6, and then the outer sleeve 2 is screwed on the supporting sleeve 4 again, as shown in fig. 1. It links to each other with fishing tool cluster to salvage head 1 on the outer sleeve 2, the weighting pole has on the fishing tool cluster, put fishing tool cluster earlier, meet the steel wire and meet the resistance until the fishing spear feeler, then lift fishing tool cluster to 20 meters and loosen the fishing tool cluster again, the fishing spear tenesmus under the action of gravity of weighting pole, the circumference guide face 7 through guide structure after meetting the steel wire leads the steel wire to the solid of revolution 3, rotatory rising behind the solid of revolution 3 atress axial force, 11 drive steel wire rotations of center fishing spear on the solid of revolution 3 simultaneously, twine the steel wire on crisscross center fishing spear 11, and through interior fishing hook 10 and outer fishing hook 9 hook, in order to guarantee the success rate of salvaging. Meanwhile, after the revolving body 3 rises, the supporting sleeve 4 releases the limit on the stop pin 5, and the stop pin 5 is popped up under the action of the pressure spring and supported by the upper end face of the supporting sleeve 4, so that the revolving body 3 is hung on the supporting sleeve 4, as shown in fig. 2. And then lifting the fishing tool string to fish the fishing spear and the steel wire out of the pipeline, thus finishing the fishing operation in the continuous pipeline.

If meet the card when lifting, then can break backing pin 5 when the pulling force reaches the set tension value, backing pin 5 is broken by the snap-off back, the solid of revolution 3 loses the support, under the resistance effect of solid of revolution 3 self gravity and steel wire, the solid of revolution 3 moves down, and reverse rotation under screw mechanism's effect, the solid of revolution 3 is at reverse rotation and downstream's in-process, the steel wire that the winding was on fishing spear 11 is fishing spear 11 downstream along with the center and is relieved the winding of fishing spear 11 at the center, avoid causing the secondary operation accident, be convenient for implement and salvage once more.

In other embodiments, the number of the stop pins can be set along the circumferential direction of the revolving body as required, for example, three or more than four stop pins are set, and the number of the pressure springs corresponds to the number of the stop pins one by one.

In other embodiments, the elastic element is a tension spring arranged in a long hole of the revolving body, one end of the tension spring is fixed on the revolving body, the other end of the tension spring is fixed on the stop pin, and when the stop pin is compressed into the long hole, the tension spring gives the stop pin an elastic acting force of the revolving body which extends outwards; or an arc-shaped long groove is formed in the circumferential direction of the revolving body, an articulated shaft arranged along the axial direction of the revolving body is installed in the arc-shaped long groove, the supporting piece is an arc-shaped rod piece arranged in the arc-shaped long groove, one end of the arc-shaped rod piece is articulated on the articulated shaft, a torsional spring driving the arc-shaped rod piece to swing outwards is sleeved on the articulated shaft, and it should be noted that the arc-shaped rod piece can overcome the elastic acting force of the torsional spring and enter the arc-shaped long groove without.

In other embodiments, the spiral guide groove may be provided on the revolution surface of the revolution body, and an outer continuous spiral structure or an outer fitting structure that fits the spiral guide groove is provided on the inside of the support sleeve, where the outer continuous spiral structure is a continuous spiral protrusion, and the outer fitting structure is a plurality of protrusions arranged spirally; in other embodiments, the inner wall of the supporting sleeve is provided with a spiral guide groove, and the rotating surface of the rotating body is provided with an external matching structure which is a plurality of protrusions arranged spirally.

In other embodiments, one end of the stop pin, which is far away from the pressure spring, can be arranged into a circular truncated cone structure; or the diameter of the hemispherical head of the stop pin may be less than or equal to the width of the helical guide groove.

In other embodiments, the stop pin may not be a frangible member, which requires the shear pin between the fishing tool string and the outer sleeve to be broken to allow the fishing tool string to be lifted when the fishing encounters a jam.

In other embodiments, the circumferential guide surface may not be provided, and in this case, the wire does not easily enter below the rotator.

In other embodiments, the guide structure has an inclined guide surface to guide the wire to push against the body of revolution.

In other embodiments, can not set up outer fishing spear at fender platform lower extreme, only rely on central fishing spear to rotate in order to realize the steel wire fishing with the steel wire winding. Certainly, for improving the winding effect, also can drag for a peripheral suit outer barrel of lance at the center, utilize the space restriction of outer barrel to improve the winding effect that the lance was dragged for at the center.

In other embodiments, an annular groove may be formed in the inner wall of the support sleeve, and after the rotation of the rotation body is raised, the stop pin is ejected at the position of the annular groove and is clamped into the annular groove, so as to lock the rotation body on the support sleeve.

In the specific embodiment of the fishing spear driving device of the present invention, the fishing spear driving device includes a revolving body, and an elastic member and a supporting member arranged on the revolving body, and the revolving body, the elastic member and the supporting member in this embodiment are the same as the revolving body, the elastic member and the supporting member in the above-mentioned embodiment, and are not described again here.