CN216477230U - Small-angle wire line coring fisher - Google Patents

Abstract

The utility model discloses a small-angle rope core taking fisher, which consists of a fisher joint, a fisher heavy hammer and a fishing hook, wherein rolling mechanisms are arranged on the circumferential surfaces of the fisher heavy hammer, close to the fisher joint and two ends of the fishing hook, in a surrounding manner along circumferential intervals, roll along the length direction of the fisher, and the parts of the rolling mechanisms, which are positioned on the fisher heavy hammer, can rotate relative to the fisher joint, the fisher heavy hammer and the fishing hook. The rolling bearing on the fisher changes the sliding contact between the fisher body and the hole wall into rolling contact, and reduces the friction resistance during fishing. The fishing tool has the advantages that the upper rotating section and the lower rotating section can rotate after the fishing tool is blocked in the hole wall, the phenomenon that a rope is twisted and knotted is avoided, the fishing tool can circumferentially rotate after the rolling bearing is clamped in the hole wall to relieve the current clamping stagnation state, the smooth lifting of the fishing tool is guaranteed, meanwhile, the fishing tool body and the rope can not rotate along with the fishing tool body, and the linear lifting of the fishing tool is achieved.

Description

Small-angle wire line coring fisher

Technical Field

The utility model relates to the technical field of wire line coring during drilling and lifting, in particular to a small-angle wire line coring fisher.

Background

The wire-line coring drilling technology is an innovation technique on the traditional common drilling technology, and is a drilling technology that when a drilling operation is finished and a core barrel is filled with a core, a complete set of drilling tools is not lifted, a fisher with a wire rope is used for lifting the core barrel from a drill rod, and after the core is taken out, the core barrel is thrown into the bottom of a well from the drill rod. The drilling that the declination is less than 40 degrees all needs to carry the brill to get the core at every turn, and its fisher receives great frictional force in the well for whole intensity of labour is great, and the efficiency of construction is also lower, and long-time this kind of up-and-down motion causes more serious wearing and tearing to the fisher body, and the consumption of material is also more.

Disclosure of Invention

Aiming at the existing problems, the utility model aims to provide a small-angle wire line core-taking fisher which can reduce the friction resistance when fishing, reduce the abrasion to the fisher body, effectively reduce the labor intensity, solve the problem that the fisher is blocked on the hole wall and realize the smooth fishing of the fisher.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a small-angle wire line core fisher, fisher comprises fisher joint, fisher weight and fishing hook fisher weight is close to on the global of fisher joint and fishing hook both ends along circumference interval around being provided with rolling mechanism, and rolling mechanism follows fisher length direction rolls, the part that rolling mechanism is located the fisher weight can rotate each other for fisher joint, fisher weight and fishing hook.

Preferably, the rolling mechanism comprises rolling bearings arranged on the circumferential surfaces of the two ends of the heavy hammer of the fisher at intervals along the circumferential direction, the rotating axis of each rolling bearing is located on the axis of the fisher, the circumferential surfaces of the rolling bearings extend out of the surface of the heavy hammer of the fisher, and the adjacent rolling bearings are arranged in a crossed manner along the length direction of the heavy hammer of the fisher up and down and left and right.

Preferably, the upper end and the lower end of the fisher heavy hammer are respectively and sequentially divided into an upper rotating section and a lower rotating section, the rolling bearings are arranged on the upper rotating section and the lower rotating section, the upper rotating section rotates relative to the fisher connector and the fisher heavy hammer body, and the lower rotating section rotates relative to the fishing hook and the fisher heavy hammer body.

Preferably, the upper rotating section and the lower rotating section are provided with through cavities embedded into the rolling bearings at corresponding positions, four corners of each through cavity are provided with scrapers with outer ends clinging to the circumferential surfaces of the rolling bearings, and the scrapers and the tangent planes of the rolling bearings form an included angle.

The utility model has the beneficial effects that: the rolling bearing on the fisher changes the sliding contact of the fisher body and the hole wall into rolling contact, reduces the frictional resistance received during fishing, reduces the abrasion to the fisher body, and effectively reduces the labor intensity, mechanical abrasion and material consumption.

The fishing tool has the advantages that the upper rotating section and the lower rotating section can rotate after the fishing tool is blocked in the hole wall, the phenomenon that a rope is twisted and knotted is avoided, the fishing tool can circumferentially rotate after the rolling bearing is clamped in the hole wall to relieve the current clamping stagnation state, the smooth lifting of the fishing tool is guaranteed, meanwhile, the fishing tool body and the rope can not rotate along with the fishing tool body, and the linear lifting of the fishing tool is achieved.

The scraper plate continuously cleans the rolling bearing, so that the normal rolling of the rolling bearing is ensured, and the fisher can smoothly finish the fishing work.

Drawings

Fig. 1 is a front view of the overshot of the utility model.

Fig. 2 is a top view of the overshot of the utility model.

FIG. 3 is an enlarged view of the utility model at A in FIG. 2.

Fig. 4 is a left side view of the overshot of the utility model.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.

Referring to fig. 1-4, the small-angle rope core-taking fisher 1 is composed of a fisher joint 11, a fisher weight 12 and a fishing hook 13, wherein a rolling mechanism is arranged on the circumferential surface of the fisher weight 12 close to the two ends of the fisher joint 11 and the fishing hook 13 in a surrounding mode along the circumferential distance, the rolling mechanism rolls along the length direction of the fisher 1, preferably, a roller 4 is arranged on the fisher joint 11, and a rope is usually sleeved on the roller 4 to lift and lower the fisher 1. When fisher 1 goes up and down, because the downthehole wall is more crude, so can receive great frictional resistance, make fisher 1's lift obstructed, and the whole surface of fisher 1 also can receive great wearing and tearing at this in-process, especially to the small-angle drilling, 1 side of fisher side and pore wall integral contact receive great lift frictional force, cause wearing and tearing to 1 lateral wall of fisher, this rolling mechanism can make fisher 1 roll along its length direction, can reduce the frictional resistance that fisher 1 received to a great extent, the wearing and tearing have also been reduced simultaneously. Therefore, the rolling mechanisms are arranged at the two ends of the fisher heavy hammer 12, sliding friction between the fisher 1 and the hole wall is changed into rolling friction, friction resistance between the fisher 1 and the hole wall is greatly reduced, and external force of a rope for driving the fisher 1 to ascend and descend is reduced, so that the fisher 1 can ascend and descend smoothly.

On the basis of the above-mentioned rolling up and down operation, the parts of the rolling mechanism located on the overshot weight 12 are mutually rotatable with respect to the overshot connector 11, the overshot weight 12 and the overshot hook 13. The fishing device comprises a fishing device 1 body, a moving mechanism, a rope, a lifting mechanism and a lifting mechanism, wherein the fishing device 1 body is connected with the rope, the rope is driven by external force of the rope, the moving mechanism is driven by the external force of the rope to rotate after being blocked in a hole wall, so that the blocking state is relieved, the fishing device 1 can be lifted smoothly, and the defect that the rope is broken due to the fact that the rope is twisted and knotted can be avoided due to the rotation of the moving mechanism relative to the fishing device 1 body.

Specifically, as shown in fig. 4, the rolling mechanism includes rolling bearings 2 arranged at circumferential intervals on circumferential surfaces of two ends of a fisher weight 12, a rotation axis of each rolling bearing 2 is located on an axis of the fisher 1, circumferential surfaces of the rolling bearings 2 extend out of the surface of the fisher weight 12, the fisher 1 is in contact with a hole wall through the circumferential surfaces of the rolling bearings 2, and meanwhile, a body of the fisher 1 is separated from the hole wall, so that the number of the fisher 1 is greatly reducedThe contact area of the fisher 1 and the hole wall. The rotating axis of the rolling bearing 2 coincides with the axis of the fisher 1, so that the fisher 1 can lift along the central line thereof, and the situation that the driving force of a rope deviates to one side of the fisher 1 to cause the fisher 1 and a hole wall to have a deflection clamp is avoidedStagnation of qiTo a problem of (a). Preferably, the adjacent rolling bearings 2 are staggered up and down and left and right along the length direction of the fishing tool heavy hammer 12. This antifriction bearing 2 is located fisher 1's central point and puts and be "ten" word, and then can carry out circumference stabilizing support to fisher 1, has solved the great frictional resistance of fisher 1 body and pore wall contact.

When the rope carries the fisher 1 to move upwards, due to shaking in the process and the fact that the rolling bearings 2 at different positions are blocked in the hole wall, the fisher 1 body rotates, and therefore, in order to avoid the problems that the rope is easy to break and the fisher 1 rotates due to torsion knotting caused by rotation, as shown in fig. 1, an upper rotating section 121 and a lower rotating section 122 are sequentially divided at the upper end and the lower end of the fisher weight 12, the rolling bearings 2 are arranged on the upper rotating section 121 and the lower rotating section 122, the upper rotating section 121 rotates relative to the fisher connector 11 and the fisher weight 12 body, and the lower rotating section 122 rotates relative to the fishing hook 13 and the fisher 12 body.

The action principle of the structure is as follows: the upper rotating section 121 and the lower rotating section 122 (preferably, the upper rotating section 121 and the lower rotating section 122 are fixedly provided with rotating shafts 5 at two ends thereof to be capable of rotating, and the rolling bearing 2 is arranged on the upper rotating section 121 and the lower rotating section 122, so that when the fisher 1 is blocked in a hole wall and rotates, the fisher 1 body and a rope can be kept not rotating along with each other, the straight lifting of the fisher 1 is realized, meanwhile, the phenomenon of twisting and knotting of the rope is avoided, furthermore, the rolling bearing 2 can be clamped in the hole wall to delay circumferential rotation so as to relieve the current clamping stagnation state, and the fisher 1 can be ensured to lift smoothly.

Because the environment in the hole is wet and the soil quality is wet and soft, the soil quality is attached to the outer surface of the rolling bearing 2, the rolling bearing 2 is blocked relative to the rotation of the fisher 1, and the fisher 1 cannot be smoothly lifted. Therefore, in order to solve this problem, as shown in fig. 3, through cavities 102 into which the rolling bearings 2 are fitted are opened at corresponding positions in the upper rotor segment 121 and the lower rotor segment 122, and scrapers 3 having outer ends closely attached to the circumferential surfaces of the rolling bearings 2 are provided at four corners of the through cavities 102. Wherein, the outer end of the scraper 3 (as shown in fig. 3) is pressed against the circumferential surface of the rolling bearing 2, and the other end is fixed on the side wall of the through cavity 102. The scrapers 3 are symmetrically arranged around the rolling bearing 2, so that soil attached to the surface of the rolling bearing 2 can be quickly cleaned when the fisher 1 is lifted or lowered (the rolling bearing 2 rotates forwards or backwards), and the rolling bearing 2 can roll smoothly.

In order to avoid the problem that the rolling resistance of the rolling bearing 2 is gradually increased due to the accumulation of a small amount of soil adhered to the surface of the rolling bearing 2 between the scraper 3 and the rolling bearing 2, as shown in fig. 3, the scraper 3 and the tangent plane of the rolling bearing 2 form an included angle. The scraper blade has the effect of increasing the distance between the scraper blade 3 and the rolling bearing, so that the problem of soil accumulation is solved, and the rolling bearing 2 is ensured to roll smoothly.

The principle of the utility model is as follows: this fisher is when salvaging, through rope drive gyro wheel and be used in on salvaging the connector, the global contact of corresponding side of corresponding antifriction bearing is on the pore wall to roll along the pore wall, being in the obstructed back of antifriction bearing, it is rotatory that upper run section and lower run section compare in the fisher body, and drive obstructed antifriction bearing simultaneously along fisher rotation in a circumferential direction, relieve antifriction bearing's the state of being obstructed, keep rope and fisher body straight line to promote throughout.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides a small-angle wire line core fisher, fisher (1) comprises fisher joint (11), fisher weight (12) and salvage hook (13), its characterized in that: the fishing device is characterized in that rolling mechanisms are arranged on the circumferential surfaces of the fishing device heavy hammer (12) close to the two ends of the fishing device joint (11) and the fishing hook (13) in a surrounding mode along the circumferential direction at intervals, the rolling mechanisms roll along the length direction of the fishing device (1), and the rolling mechanisms are located on the portion, located on the fishing device heavy hammer (12), of the fishing device heavy hammer (12) and can rotate relative to the fishing device joint (11), the fishing device heavy hammer (12) and the fishing hook (13) mutually.

2. The small angle wire line coring fisher of claim 1, wherein: the rolling mechanism comprises rolling bearings (2) arranged on the circumferential surfaces of two ends of the fisher heavy hammer (12) at intervals in the circumferential direction, the rotating axis of each rolling bearing (2) is located on the axis of the fisher (1), the circumferential surfaces of the rolling bearings (2) extend out of the surface of the fisher heavy hammer (12), and the adjacent rolling bearings (2) are arranged in a crossed mode up and down, left and right in the length direction of the fisher heavy hammer (12).

3. The small angle wire line coring fisher of claim 2, wherein: an upper rotating section (121) and a lower rotating section (122) are sequentially divided at the upper end and the lower end of the fisher heavy hammer (12), the rolling bearing (2) is arranged on the upper rotating section (121) and the lower rotating section (122), the upper rotating section (121) rotates relative to the fisher joint (11) and the fisher heavy hammer (12) body, and the lower rotating section (122) rotates relative to the fishing hook (13) and the fisher heavy hammer (12) body.

4. The small angle wire line coring fisher of claim 3, wherein: the upper rotating section (121) and the lower rotating section (122) are provided with through cavities (102) embedded into the rolling bearings (2) at corresponding positions, four corners of each through cavity (102) are provided with scrapers (3) with outer ends tightly attached to the peripheral surfaces of the rolling bearings (2), and the scrapers and the tangent surfaces of the rolling bearings (2) form included angles.

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