阅读说明：本技术 一种石油井下打捞小落物的磁性打捞装置 (Magnetic fishing device for fishing small-falling objects in petroleum well ) 是由 龙正群 于 2021-01-06 设计创作，主要内容包括：本发明公开了一种石油井下打捞小落物的磁性打捞装置,涉及石油井下作业工具技术领域,包括上接头、壳体、铣磨鞋和打捞设备,所述磁吸件的左右两端对称设置有外钩杆,所述外钩杆的内侧均匀设置有钩槽,所述磁套的两侧外壁对称设置有若干个板钩,所述摆动条的内部开设有弧形槽。本发明通过摆动条设置,摆动条内不规则的弧形槽带动尾部的磁芯铁摆动对周围的小碎块进行磁吸,保证石油井下作业的效率和质量,通过转动球的设置,可以实现在落物倾斜或者摩擦发生移动时可以保持平衡,保证了落物不易掉落,通过可以旋转的外钩杆和板钩设置,可以将磁吸件向上拉升并且同时旋转外钩杆,绳子被卡在外钩杆的钩槽和板钩之间,保证了绳落物不易再次掉落。(The invention discloses a magnetic fishing device for fishing small-sized falling objects in an oil well, which relates to the technical field of oil underground operation tools and comprises an upper joint, a shell, milling shoes and fishing equipment, wherein outer hook rods are symmetrically arranged at the left end and the right end of a magnetic suction piece, hook grooves are uniformly formed in the inner sides of the outer hook rods, a plurality of plate hooks are symmetrically arranged on the outer walls of the two sides of a magnetic sleeve, and arc grooves are formed in the swinging strip. According to the invention, through the arrangement of the swinging strip, the irregular arc-shaped groove in the swinging strip drives the magnetic core iron at the tail part to swing to magnetically attract surrounding small fragments, so that the efficiency and the quality of petroleum underground operation are ensured, through the arrangement of the rotating ball, balance can be kept when falling objects tilt or move due to friction, so that the falling objects are ensured not to fall easily, through the arrangement of the rotatable outer hook rod and the plate hook, the magnetic attraction piece can be pulled upwards and the outer hook rod can be rotated at the same time, the rope is clamped between the hook groove of the outer hook rod and the plate hook, and the rope falling objects are ensured not to fall easily again.)

1. The utility model provides a magnetism fishing device of small-size junk is salvaged in oil pit, includes top connection (1), casing (2), milling shoe (3) and fishing equipment (4), its characterized in that: the bottom of top connection (1) and the top swing joint of casing (2), the inner wall of casing (2) and the outer wall fixed connection of milling shoe (3), the bottom of milling shoe (3) and the top swing joint of salvage equipment (4), logical groove (31) have been seted up to the inside of milling shoe (3), salvage equipment (4) are including salvage (41) and stay cord (42), the bottom of stay cord (42) and the top fixed connection of salvage (41).

2. The magnetic fishing device for fishing the small junk in the oil well according to the claim 1, characterized in that: salvage piece (41) including outer hook rod (411) and magnetism inhale piece (412), the outer wall of outer hook rod (411) and the inner wall sliding connection of milling shoe (3), the inner wall of outer hook rod (411) and the inner wall sliding connection of casing (2), the top of outer hook rod (411) and the bottom fixed connection of top connection (1), magnetism inhale about both ends symmetry of piece (412) and be provided with outer hook rod (411), the inboard of outer hook rod (411) evenly is provided with hook groove (a 1).

3. The magnetic fishing device for fishing the small junk in the oil well according to the claim 2, characterized in that: piece (412) are inhaled to magnetism includes strong magnet (b1), board hook (b2), swing piece (b3) and magnetic sleeve (b5), the inside fixedly connected with strong magnet (b1) of magnetic sleeve (b5), the both sides bottom of magnetic sleeve (b5) is provided with swing piece (b3), the both sides outer wall symmetry of magnetic sleeve (b5) is provided with a plurality of board hook (b 2).

4. The magnetic fishing device for fishing the small junk in the oil well according to the claim 3, characterized in that: the top of magnetic sleeve (b5) is rotated and is connected with swivel ball (b4), the both sides swing joint of swivel ball (b4) has slide bar (b6), the both ends of slide bar (b6) and the inner wall sliding connection who leads to groove (31), the bottom both sides of leading to groove (31) are rotated and are connected with rebound net (311).

5. The magnetic fishing device for fishing the small junk in the oil well according to the claim 3, characterized in that: the swinging piece (b3) comprises a swinging strip (c1) and a magnetic core iron (c3), the bottom of the swinging strip (c1) is fixedly connected with the magnetic core iron (c3), and an arc-shaped groove (c2) is formed in the swinging strip (c 1).

Technical Field

The invention relates to a fishing device, relates to the technical field of oil downhole operation tools, and particularly relates to a magnetic fishing device for fishing small-sized falling objects in an oil well.

Background

The underground operation is a technical means for guaranteeing normal production of an oil-water well in the process of oil field exploration and development, in the process of the underground operation of the oil well, small objects can fall off, and for small strip-shaped, sheet-shaped and granular metals (such as drilling and grinding residual blocks, perforation fragments, screws, pins, rubber barrel fragments, steel wire ropes and the like) with small volumes, a strong magnetic salvage device is generally adopted for salvage, the magnetic salvage device is a tool for salvaging small iron falling objects by utilizing the magnetic suction force of a magnet and is mainly used for salvaging small iron falling objects such as drill bit cones, slip teeth, clamp teeth, steel balls, manual tools, oil pipes or casing fragments and the like falling into the well, and the bottom of the magnetic salvage device can be connected with milling shoes or guide shoes according to the needs of salvaging operation. The following problems exist in the prior art:

1. in the prior art, when a strong magnetic fishing device is used for fishing small fallen objects underground in the underground petroleum process, the small fallen objects (such as short oil pipes, steel wire ropes and the like) fall into the underground petroleum oil, the oil pipes and the rope-shaped objects are in an inclined state in the pulling-up process and easily slide down when touching two sides in the pulling-up process, so that the problems of difficult pulling-out and easy sliding-down exist, and some small broken pieces around are difficult to adsorb;

2. among the prior art, can have to some rope form small-sized droppings and be difficult to hold in oil, consequently the problem that drops extremely easily in the pit, and then reach the use original intention of coming on the quick accurate salvage of rope form droppings, this fishing device's suitability worsens, consequently needs carry out the structure innovation and solves specific problem.

Disclosure of Invention

The invention provides a magnetic fishing device for fishing small-sized objects in petroleum wells, which aims to have the beneficial effect of fishing small fragments near the magnetic fishing device and solve the problem that the small fragments in the wells are difficult to fish; when the other purpose is in order to solve the problem that the small-sized falling object falls into oil in the oil well, the oil pipe and the rope-shaped object can be in an inclined state in the pulling-up process, so that the problem that the small-sized falling object is not easy to pull out and easily falls off exists, the falling object and two sides rub to the effect that the small-sized falling object is not easy to fall off after the falling object is adsorbed, and the other purpose is to conveniently salvage the rope-shaped object firmly and not easy to fall off when the magnetic fishing device is used for salvaging the rope-shaped falling object.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a magnetism fishing device of small junk is salvaged in oil well, includes top connection, casing, milling shoe and fishing equipment, the bottom of top connection and the top swing joint of casing, the inner wall of casing and the outer wall fixed connection of milling shoe, the bottom of milling shoe and the top swing joint of fishing equipment, logical groove has been seted up to the inside of milling shoe, fishing equipment includes salvage and stay cord, the bottom of stay cord and the top fixed connection of salvage.

The technical scheme of the invention is further improved as follows: the fishing tool comprises a fishing part and a fishing rod, wherein the fishing part comprises an outer hook rod and a magnetic attraction part, the outer wall of the outer hook rod is in sliding connection with the inner wall of a milling shoe, the inner wall of the outer hook rod is in sliding connection with the inner wall of a shell, the top of the outer hook rod is fixedly connected with the bottom of an upper joint, the magnetic attraction part is symmetrically provided with the outer hook rod at the left end and the right end, and the inner side of the outer hook rod is evenly provided with hook grooves.

The technical scheme of the invention is further improved as follows: the magnetic attraction piece comprises a strong magnet, plate hooks, a swinging piece and a magnetic sleeve, wherein the strong magnet is fixedly connected inside the magnetic sleeve, the swinging piece is arranged at the bottom ends of two sides of the magnetic sleeve, and the plate hooks are symmetrically arranged on the outer walls of the two sides of the magnetic sleeve.

The technical scheme of the invention is further improved as follows: the top of the magnetic sleeve is rotatably connected with a rotating ball, two sides of the rotating ball are movably connected with sliding rods, two ends of each sliding rod are slidably connected with the inner wall of the corresponding through groove, and two sides of the bottom end of each through groove are rotatably connected with rebound nets.

The technical scheme of the invention is further improved as follows: the swing piece comprises a swing strip and magnetic core iron, the magnetic core iron is fixedly connected to the bottom of the swing strip, and an arc-shaped groove is formed in the swing strip.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:

1. the invention provides a magnetic fishing device for fishing small-sized falling objects in an oil well, which is ingenious in design, and adopts the combination of a strong magnet in a magnetic sleeve and a magnetic core iron of a swinging piece, the swinging piece at the bottom ends of two sides of the magnetic sleeve is acted by the upward force of oil in the oil well when the device sinks, oil enters the swinging piece, an arc-shaped groove in an irregular arc shape is formed in the swinging piece, and the oil flows irregularly in the swinging piece after entering, so that the swinging piece can swing irregularly in all directions, the magnetic core iron at the tail part is driven to swing to magnetically attract surrounding small fragments, the fishing efficiency is higher, and the efficiency and the quality of the oil well operation are ensured.

2. The invention provides a magnetic fishing device for fishing small fallen objects in an oil well, which can realize that the fallen objects are easy to fall off due to the friction of the fallen objects in the underground environment to the surroundings in the process of being pulled upwards after being adsorbed in the process of fishing in the oil well by the arrangement of a rotating ball, the rotating ball at the top of a magnetic sleeve can realize rotation, can keep balance when the fallen objects incline or move due to friction, and ensures the success rate that the fallen objects are difficult to fall off and are fished at one time.

3. The invention provides a magnetic fishing device for fishing small fallen objects in an oil well, which is characterized in that a plurality of plate hooks uniformly arranged on the outer walls at two ends of a magnetic sleeve can be used for fishing rope-shaped fallen objects in the fishing process of oil well operation through the combination of a hook groove formed in the inner side of an outer hook rod and plate hooks on the outer wall of the magnetic sleeve, when a rope is hooked on the plate hooks, a magnetic attraction piece is pulled upwards and the outer hook rod is rotated at the same time, a rope is clamped between the hook groove of the outer hook rod and the plate hooks, the rope-shaped fallen objects are ensured not to fall again easily, and the magnetic fishing device can effectively fish oil pipes, fragments and rope-shaped fallen objects in the underground operation process, so that the fishing quality and the success rate of one-time successful fishing are improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a cross-sectional view of the fishing element of the present invention;

FIG. 4 is an enlarged detail view taken at A in FIG. 3 according to the present invention;

fig. 5 is an enlarged view of the detail B in fig. 3 according to the present invention.

In the figure: 1. an upper joint; 2. a housing; 3. milling and grinding the shoe; 4. salvaging the equipment; 31. a through groove; 41. fishing the parts; 42. pulling a rope; 411. an outer hook rod; 412. a magnetic member; 311. a resilient net; a1, hook slot; b1, strong magnet; b2, plate hook; b3, a swinging piece; b4, rolling ball; b5, a magnetic sleeve; b6, a sliding rod; c1, a swing bar; c2, arc-shaped groove; c3, magnetic core iron.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

example 1

As shown in figures 1-3, the invention provides a magnetic fishing device for fishing small-sized junk in an oil well, which comprises an upper joint 1, a shell 2, a milling shoe 3 and a fishing device 4, wherein the bottom of the upper joint 1 is movably connected with the top of the shell 2, the inner wall of the shell 2 is fixedly connected with the outer wall of the milling shoe 3, the bottom of the milling shoe 3 is movably connected with the top of the fishing device 4, a through groove 31 is formed inside the milling shoe 3, the fishing device 4 comprises a fishing part 41 and a pull rope 42, the bottom of the pull rope 42 is fixedly connected with the top of the fishing part 41, the fishing part 41 comprises an outer hook rod 411 and a magnetic part 412, the outer wall of the outer hook rod 411 is slidably connected with the inner wall of the milling shoe 3, the inner wall of the outer hook rod 411 is slidably connected with the inner wall of the shell 2, the top of the outer hook rod 411 is fixedly connected with the bottom of the upper joint 1, the outer hook rods 411 are symmetrically arranged at the left, the inner side of the outer hook bar 411 is uniformly provided with hook grooves a 1.

In this embodiment, the top connection 1 can rotate at the top of the housing 2, the top connection 1 is provided with a tether, the tether is used for an operator to pull the magnetic fishing device, the pull rope 42 is connected with the through groove 31 in a sliding manner, the bottom of the pull rope 42 is fixedly connected with the fishing piece 41, the pull rope 42 can pull the magnetic attraction piece 412 to slide up and down, the bottom of the top connection 1 is connected with the outer hook rod 411, the outer hook rod 411 can rotate around the axis and slide up and down by the top connection 1, the inner side of the outer hook rod 411 is provided with a plurality of downward hook grooves a1, when hooking up the rope-shaped falling object, the hook grooves a1 can clamp the rope-shaped falling object in the hook grooves a1 and can be matched with the plate hooks b2 to clamp the rope-shaped falling object, the small falling object is avoided from dropping again, the success rate of fishing the falling object in the oil-well operation is improved.

Example 2

As shown in fig. 3 to 5, on the basis of embodiment 1, the present invention provides a technical solution: the magnetic attraction piece 412 comprises a strong magnet b1, a plate hook b2, a swinging piece b3 and a magnetic sleeve b5, the inside of the magnetic sleeve b5 is fixedly connected with a strong magnet b1, the bottom ends of the two sides of the magnetic sleeve b5 are provided with swinging pieces b3, the outer walls of the two sides of the magnetic sleeve b5 are symmetrically provided with a plurality of plate hooks b2, the top of the magnetic sleeve b5 is rotatably connected with a rotating ball b4, the two sides of the rotating ball b4 are movably connected with a sliding rod b6, the two ends of the sliding rod b6 are slidably connected with the inner wall of the through groove 31, the two sides of the bottom end of the through groove 31 are rotatably connected with a rebounding net 311, the swinging pieces b3 comprise a swinging strip c1 and a magnetic core iron c3, the bottom of the swinging strip c1 is fixedly connected with a magnetic core iron 3.

In this embodiment, the strong magnet b1 inside the magnetic sleeve b5 is a magnet with strong magnetic attraction, which plays a role of adsorbing and salvaging small-sized falling objects when working in an oil well, the bottom ends of the two sides of the magnetic sleeve b5 are respectively provided with symmetrical swinging pieces b3, the swinging pieces b3 are composed of a plurality of swinging strips c1, the swinging strips c1 are internally provided with irregular arc-shaped grooves c2, during the descending process of the magnetic salvaging device, oil or water can enter the arc-shaped grooves c2 under the upward action of oil and water in the oil well, force in different directions is generated on the swinging strips c1 to push the swinging strips c1 to swing, the magnetic core c3 at the tail part of the swinging strips c1 adsorbs small fragments around the magnetic sleeve b5 along with the irregular swinging of the swinging strips c1, the underground efficiency of the salvaging operation is improved, when the bottom of the magnetic sleeve b5 adsorbs the falling objects, the bottom of the magnetic sleeve b5 has a smaller contact area with the falling objects, in the underground environment, the falling objects are easy to fall off by friction in the process of being pulled up, the rotating ball b4 at the top of the magnetic sleeve b5 can keep balance when the falling objects incline or move by friction, the falling objects are prevented from falling off easily, the success rate of fishing the falling objects at one time is ensured, meanwhile, a plurality of plate hooks b2 uniformly arranged on the outer walls of the two ends of the magnetic sleeve b5 can salvage rope-shaped falling objects in the process of fishing the underground oil well, when the rope is hooked on the plate hooks b2, the rebounding nets 311 at the two sides of the bottom end of the through groove 31 can prevent large impurities in the oil well from entering the through groove 31 to cause blockage, the magnetic attraction piece 412 is pulled up and the outer hook rod 411 is rotated at the same time, the rope is clamped between the hook groove a1 of the outer hook rod 411 and the plate hook b2, the rope-shaped fallen objects are prevented from falling off again, and the magnetic device is not easy to fall off in the process of the underground operation, the fishing tool can effectively salvage oil pipes, fragments and rope-shaped falling objects, and improves the quality of salvage and the success rate of one-time salvage success.

The working principle of the magnetic fishing device for fishing the small-sized falling objects in the oil well is described in detail below.

As shown in fig. 1-5, in the using process, a rope is tied on the upper connector 1, another rope is tied on the top of the pull rope 42, the whole magnetic fishing device is put into the well for fishing, the pull rope 42 is firstly lengthened, the length of the rope is longer than that of the rope of the upper connector 1, at this time, the fishing part 41 sinks wholly, wherein the magnetic attraction part 412 has a faster sinking speed than that of the outer hook rod 411, because the magnetic attraction part 412 is continuously sunk and is acted by the upward force of oil in the oil well, water and oil enter the swing strip c1 of the swing part b3, the swing strip c1 is internally provided with an irregular arc-shaped groove c2, the oil in the oil well flows irregularly in the swing strip c1, so that the swing part b3 can swing irregularly in all directions, the tail part of the swing strip c1 is provided with a magnetic core iron c3, small fragments around the magnetic sleeve b5 can be magnetically attracted in the swinging process, the fishing efficiency is higher, the efficiency and the quality of the oil downhole operation are ensured, the inside of the magnetic sleeve b5 is provided with a strong magnet b1 with strong magnetic force, when falling objects are adsorbed at the bottom of the magnetic sleeve b5, because the contact area between the bottom of the magnetic sleeve b5 and the falling object is small, and because the falling object in the underground environment can be rubbed to the surrounding and easily fall off in the process of being pulled up, the rotating ball b4 at the top of the magnetic sleeve b5 can keep balance when the falling object inclines or is rubbed to move, the success rate of fishing the falling object at one time is ensured, meanwhile, the plate hooks b2 evenly arranged on the outer walls of the two ends of the magnetic sleeve b5 can salvage rope-shaped falling objects in the process of fishing in the oil well, when the rope is hooked on the plate hook b2, the magnetic attraction piece 412 is pulled up and the outer hook rod 411 is rotated at the same time, the rope is caught between the hook groove a1 of the outer hook rod 411 and the plate hook b2, and it is ensured that the rope fall is not easy to fall again.

The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.