CN217129494U - Anti-blocking drift size gauge tool - Google Patents
Anti-blocking drift size gauge tool Download PDFInfo
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- CN217129494U CN217129494U CN202220922369.8U CN202220922369U CN217129494U CN 217129494 U CN217129494 U CN 217129494U CN 202220922369 U CN202220922369 U CN 202220922369U CN 217129494 U CN217129494 U CN 217129494U
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Abstract
The utility model discloses an anti-jamming drift size gauge tool, wherein the lower end of an upper joint is screwed with a cylinder, the outer diameter of the cylinder is larger than that of the upper joint, and the upper part of the cylinder is screwed with the lower end of the upper joint through a cylinder reducing section; the inner cavity of the upper joint is provided with a piston, and the outer wall of the piston is sequentially provided with a piston sealing section, a piston water cavity, a piston suspension section, a piston reducing section and a piston expanding section from top to bottom; the upper end of the central hole of the piston is provided with a ball seat; the piston expanding section is positioned at the upper part of the cylinder body and is screwed with a core pipe, and the lower end of the core pipe extends out of the lower port of the cylinder body and is screwed with a guide head; three S-shaped slots are uniformly distributed on the wall of the cylinder body, and each S-shaped slot extends from the lower part of the reducing section of the cylinder body to the lower port of the cylinder body; the inner walls of the middle part and the lower part of the cylinder body are respectively provided with a convex ring in the cylinder body, the middle part and the lower part of the core tube are respectively provided with a convex ring outside the core tube, and the outer wall of the convex ring outside the core tube is respectively abutted against the inner wall of the convex ring in the cylinder body. When the phenomenon of jamming and jamming occurs in the drifting operation process, the outer diameter of the cylinder body can be changed, and the purpose of releasing the jamming is achieved.
Description
Technical Field
The utility model relates to a special maintenance tool of oil-water well especially relates to an anti-sticking drifting gauge tool, belongs to the anticorrosive technical field of oil field pipeline.
Background
Drift gauges are simple and commonly used tools for measuring the drift size in casing, tubing, drill pipe and other tubulars. The inspection tool can be used for inspecting whether the inner drift diameters of various pipes meet the standard or not and inspecting the maximum geometric dimension which can pass through the pipes after deformation, and is an essential tool for well repair and operation detection. The casing drift diameter gauge is a thin-wall cylindrical tool for detecting the drift diameter size in a casing, and is commonly called a drift diameter gauge.
As the production of oil and gas wells enters the later stage, well repair operation is required under many conditions. The inner wall of the casing usually has wax deposition and serious scale formation, so that the working tool is difficult to drop to a preset position. Usually, a drifting operation is performed by using a drifting rail, the drifting rail is connected below a tubing string and is put into a casing to remove impurities such as wax, scale, sand and the like on the inner wall of the casing. And (3) introducing well-flushing liquid into the center of the oil pipe, and returning along an annular space between the tool and the casing pipe after flowing out of the lower end of the pipe column, so that the scraped wax, dirt, sand and other impurities are brought to the ground. Because the annular space is narrow and small, impurities such as wax, dirt, sand are easy to accumulate below the drift size gauge tool in the upward-returning process, and deposit is generated above the drift size gauge tool, so that the drift size gauge tool is blocked.
When the drift size gauge is stuck, the stuck is usually released by adopting methods such as up-down moving pipe columns, well washing and the like. In the actual operation process, the means of the unfreezing operation still cannot unfreeze the card, and great trouble is brought to the subsequent operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the problem that exists among the prior art, provide an anti-sticking drifting gauge tool, when the drifting operation in-process meets the card and the dead phenomenon of card appears, can change the external diameter of barrel, reach the purpose of unfreezing.
In order to solve the technical problem, the anti-blocking drift size gauge tool comprises an upper joint, wherein a barrel is screwed at the lower end of the upper joint, the outer diameter of the barrel is larger than that of the upper joint, and the upper part of the barrel is screwed at the lower end of the upper joint through a barrel reducing section; the inner cavity of the upper joint is provided with a piston, and the outer wall of the piston is sequentially provided with a piston sealing section, a piston water cavity, a piston suspension section, a piston reducing section and a piston expanding section from top to bottom; the central hole of the piston is communicated with the central hole of the core pipe, and the upper end of the central hole of the piston is provided with a ball seat; the piston expanding section is positioned at the upper part of the cylinder body and is screwed with a core pipe extending downwards, and the lower end of the core pipe extends out of the lower port of the cylinder body and is screwed with a guide head; three S-shaped slots are uniformly distributed on the wall of the cylinder body, and each S-shaped slot extends from the lower part of the reducing section of the cylinder body to the lower port of the cylinder body; the inner walls of the middle part and the lower part of the barrel body are respectively provided with a barrel body inner convex ring, the middle part and the lower part of the core pipe are respectively provided with a core pipe outer convex ring, and the outer wall of the core pipe outer convex ring is respectively abutted against the inner wall of the barrel body inner convex ring.
As an improvement of the utility model, the last port of top connection is equipped with the oil pipe and detains, the below that the oil pipe was detained is equipped with the interior step of top connection, the top of piston supports the below of leaning on the interior step of top connection.
As a further improvement, the periphery of the piston seal section is embedded with three piston seal rings and the inner wall of the upper joint realizes sealing.
As a further improvement, the middle circumference symmetry of the upper joint is provided with four circulation holes, and the inner ports of the four circulation holes are communicated with the piston water cavity.
As the utility model discloses a further improvement, the below in four circulation holes is the top connection large diameter section, many shear pins are installed to the upper portion circumference symmetry of top connection large diameter section, and the inner end of each shear pin imbeds respectively in the shear pin spacing groove, the shear pin spacing groove distributes the middle section of piston suspension section.
As a further improvement, the lower part external screw thread of the top connection large diameter section with the internal thread on barrel undergauge section upper portion connects soon mutually, the bottom of top connection supports and leans on the opening keeps off the ring, the bottom that the opening kept off the ring supports and leans on the interior step of barrel undergauge section.
As a further improvement, the upper end outer fringe of the guide head is provided with a guide head upper shell, and the guide head upper shell is sleeved at the periphery of the lower end of the cylinder body.
As a further improvement, the upper end outer fringe of the guide head is provided with a guide head upper shell, the inner edge of the convex ring in the barrel of the lower part of the barrel is provided with a downwardly extending barrel lower spigot, and the guide head upper shell is sleeved on the periphery of the barrel lower spigot.
Compared with the prior art, the utility model discloses following beneficial effect has been obtained: 1. when the drifting operation is executed, the barrel can be kept in a large-diameter state, and the drift diameter in the sleeve after drifting is ensured to meet the requirement.
2. When the blockage occurs and the blockage phenomenon occurs in the drifting operation process, if the blockage can not be released by adopting methods such as up-down movable pipe columns, well washing and the like, the piston can be unlocked through throwing the ball, so that the core pipe moves downwards, the inner cavity of the sleeve pipe loses the support, and the diameter is reduced, thereby achieving the purpose of releasing the blockage, and the drifting pipe column can be lifted out after the blockage is released.
3. The structure is simple, the operation is easy, and particularly, the ground is easy to control during the unfreezing operation; before the ball is thrown, the adoption of other unfreezing methods is not influenced; no additional workload is added.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.
FIG. 1 is a front view of the anti-sticking drift size gauge of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a cross-sectional view of the anti-sticking drift size gauge of the present invention;
fig. 4 is a state diagram of the utility model when the card is released.
In the figure: 1. an upper joint; 1a, buckling a tubing; 1b, circulating holes; 2. a barrel; 2 a.S-shaped slot; 2b, a convex ring in the cylinder body; 3. a piston; 3a, a piston sealing ring; 3b, a piston water cavity; 3c, a shear pin limiting groove; 4. shearing the nails; 5. an opening baffle ring; 6. a core tube; 6a, forming a convex ring outside the core tube; 7. a guide head; 7a, guiding head upper shell; 8. and (5) steel balls.
Detailed Description
In the following description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not mean that the device must have a specific orientation.
As shown in fig. 1 to 3, the anti-sticking drift size gauge tool of the present invention comprises an upper joint 1, an upper port of the upper joint 1 is provided with an oil pipe buckle 1a for connecting with an oil pipe going into the well above, a cylinder 2 is screwed at the lower end of the upper joint 1, the outer diameter of the cylinder 2 is larger than that of the upper joint 1, and the upper part of the cylinder 2 is screwed at the lower end of the upper joint 1 through a cylinder diameter reducing section; the main body part of the cylinder body 2 is a large end, and the outer diameter and the length of the large end are designed according to the requirements of relevant technical specifications. The inner cavity of the cylinder body 2 is provided with a core tube 6 capable of floating up and down, the lower end of the core tube 6 extends out of the lower port of the cylinder body 2 and is screwed with a guide head 7, and the lower end of the guide head 7 is provided with a conical head part which plays a role in guiding in the well dredging gauge descending process.
Three S-shaped slots 2a are uniformly distributed on the wall of the cylinder body 2, and each S-shaped slot 2a extends from the lower part of the diameter-reducing section of the cylinder body to the lower end port of the cylinder body. The upper ends of the three S-shaped slots 2a do not penetrate through the reduced diameter section of the cylinder body, and the S-shaped slots can be used for changing the outer diameter of the cylinder body and realizing the full coverage of the detection circumference of the sleeve.
The inner walls of the middle part and the lower part of the cylinder body 2 are respectively provided with a cylinder inner convex ring 2b, the middle part and the lower part of the core pipe 6 are respectively provided with a core pipe outer convex ring 6a, and the outer wall of the core pipe outer convex ring 6a is respectively abutted against the inner wall of the cylinder inner convex ring 2b. In the well dredging gauge descending process, the inner convex ring 2b of the cylinder body is supported by the outer convex ring 6a of the core pipe, so that the outward extrusion resistance of the cylinder body 2 is improved, the cylinder body is stabilized in a large-diameter state, and the well dredging quality is ensured.
An upper joint inner step is arranged below the tubing buckle 1a. The inner cavity of the upper joint 1 is provided with a piston 3, the central hole of the piston 3 is communicated with the central hole of the core pipe, and water flow communication is ensured during well dredging.
The upper end of the piston center hole is provided with a bell mouth which is used as a ball seat for setting the steel ball 8, so that the ball can be conveniently thrown to set and suppress pressure. The outer wall of the piston 3 is sequentially provided with a piston sealing section, a piston water cavity 3b, a piston suspension section, a piston reducing section and a piston expanding section from top to bottom.
An upper joint inner step is arranged below an oil pipe buckle 1a of the upper joint 1, and a sealing surface between the upper joint inner step and the piston 3 is processed below the upper joint inner step. The top of the piston 3 is abutted against the lower part of the inner step of the upper joint, so that the upper limit of the piston 3 is realized, and the lower part of the piston diameter expansion section is screwed with the upper end of the core pipe 6. The periphery of the piston sealing section is embedded with three piston sealing rings 3a to realize sealing with the inner wall of the upper joint 1.
Four circulation holes 1b are symmetrically arranged on the circumference of the middle part of the upper joint 1 and used for circularly washing a well during unfreezing operation, and inner ports of the four circulation holes 1b are communicated with a piston water cavity 3b.
The lower part of the four circulation holes 1b is an upper joint large-diameter section, four screw holes are symmetrically formed in the circumference of the upper part of the upper joint large-diameter section, shear pins 4 are screwed in the screw holes respectively, the inner end heads of the shear pins 4 are embedded into shear pin limiting grooves 3c respectively, and the shear pin limiting grooves 3c are distributed in the middle section of the piston suspension section. In the drifting process, the four circulation holes 1b are in a closed state due to the action of the three piston sealing rings 3a.
The external thread of the lower part of the large-diameter section of the upper joint is connected with the internal thread of the upper part of the reducing section of the cylinder body in a rotating mode, the bottom of the upper joint 1 is abutted against the opening baffle ring 5, and the bottom of the opening baffle ring 5 is abutted against the inner step of the reducing section of the cylinder body. For the convenience of installation, the opening baffle ring 5 adopts a split design and has the function of limiting the maximum descending distance of the piston 3, and when the lower step of the piston suspension section contacts the opening baffle ring 5, the piston 3 does not descend any more, so that the core tube 6 is ensured not to be separated from the cylinder body 2.
The outer edge of the upper end of the guide head 7 is provided with an upper guide head shell 7a, the inner edge of a convex ring 2b in the cylinder body at the lower part of the cylinder body 2 is provided with a cylinder body lower spigot extending downwards, and the upper guide head shell 7a is sleeved on the periphery of the cylinder body lower spigot. When playing the guide effect at the drifting in-process, can also avoid meeting midway and hinder and lead to barrel 2 to warp, have the effect of stabilizing barrel 2 structure simultaneously.
When the well is drifting, the anti-blocking drifting rail is connected to the lower end of the tubing string and slowly enters the well, and the operation method of the well descending is the same as that of the conventional drifting gauge. When the blockage occurs and leads to the blockage in the process of the drifting operation and the blockage can not be released by adopting methods of up-down moving pipe columns, well washing and the like, a steel ball 8 with a corresponding diameter is thrown into the oil pipe from the well mouth, after the steel ball 8 falls on a ball seat at the upper end of the piston 3, the steel ball is positively pressed for 6.0 to 10.0MPa from the inside of the oil pipe, under the action of hydraulic pressure, the shear pin 4 is sheared, the piston 3 pushes the core tube 6 and the guide head 7 to move downwards, when the lower step of the piston suspension section is contacted with the upper end surface of the opening baffle ring 5, the oil sleeve communication is realized through the four circulation holes 1b on the upper joint 1, the pressure in the oil pipe is automatically relieved, the piston 3 stops moving downwards, at the moment, the outer convex ring 6a of the core pipe descends along with the core pipe 6 and is separated from the contact with the inner convex ring 2b of the cylinder body, that is, the supporting surfaces between the cylinder body 2 and the core pipe 6 are completely separated from each other, the inner cavity of the cylinder body loses the support, then the pipe column is lifted, and the cylinder body part of the drift diameter gauge generates hole shrinkage under the action of the lifting force. The maximum diameter reduction of the cylinder body with the specification phi of 118mm can reach 10mm, so that the aim of releasing the stuck pipe is fulfilled, and the drifting pipe column can be taken out after the stuck pipe is released.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The technical features of the present invention that have not been described can be realized by or using the prior art, and are not described herein again.
Claims (8)
1. The utility model provides an anti-sticking drift size gauge tool, includes the top connection, the lower extreme of top connection has connect barrel, its characterized in that soon: the outer diameter of the cylinder body is larger than that of the upper joint, and the upper part of the cylinder body is screwed at the lower end of the upper joint through a cylinder body reducing section; the inner cavity of the upper joint is provided with a piston, and the outer wall of the piston is sequentially provided with a piston sealing section, a piston water cavity, a piston suspension section, a piston reducing section and a piston expanding section from top to bottom; the central hole of the piston is communicated with the central hole of the core pipe, and the upper end of the central hole of the piston is provided with a ball seat; the piston expanding section is positioned at the upper part of the cylinder body and is screwed with a core pipe extending downwards, and the lower end of the core pipe extends out of the lower port of the cylinder body and is screwed with a guide head; three S-shaped slots are uniformly distributed on the wall of the cylinder body, and each S-shaped slot extends from the lower part of the reducing section of the cylinder body to the lower port of the cylinder body; the inner walls of the middle part and the lower part of the barrel body are respectively provided with a barrel body inner convex ring, the middle part and the lower part of the core pipe are respectively provided with a core pipe outer convex ring, and the outer wall of the core pipe outer convex ring is respectively abutted against the inner wall of the barrel body inner convex ring.
2. The anti-sticking drift gauge of claim 1, wherein: an oil pipe buckle is arranged at the upper end opening of the upper joint, an inner step of the upper joint is arranged below the oil pipe buckle, and the top of the piston abuts against the lower part of the inner step of the upper joint.
3. The anti-sticking drift gauge of claim 1, wherein: and three piston sealing rings are embedded in the periphery of the piston sealing section to realize sealing with the inner wall of the upper joint.
4. The anti-stuck drift gauge of claim 1, wherein: four circulation holes are symmetrically arranged on the circumference of the middle part of the upper joint, and inner ports of the four circulation holes are communicated with the piston water cavity.
5. The anti-sticking drift gauge of claim 4, wherein: the lower parts of the four circulation holes are provided with upper joint large-diameter sections, a plurality of shear pins are symmetrically arranged on the circumference of the upper part of each upper joint large-diameter section, the inner end heads of the shear pins are respectively embedded into shear pin limiting grooves, and the shear pin limiting grooves are distributed in the middle section of the piston suspension section.
6. The anti-sticking drift gauge of claim 5, wherein: the lower external thread of the large-diameter section of the upper joint is screwed with the internal thread on the upper part of the reducing section of the cylinder body, the bottom of the upper joint is abutted against the opening baffle ring, and the bottom of the opening baffle ring is abutted against the inner step of the reducing section of the cylinder body.
7. The anti-sticking drift gauge of claim 1, wherein: the outer edge of the upper end of the guide head is provided with an upper guide head shell, and the upper guide head shell is sleeved on the periphery of the lower end of the barrel.
8. The anti-sticking drift gauge of claim 7, wherein: the outer edge of the upper end of the guide head is provided with an upper guide head shell, the inner edge of an inner convex ring of the cylinder body at the lower part of the cylinder body is provided with a lower cylinder body spigot extending downwards, and the upper guide head shell is sleeved on the periphery of the lower cylinder body spigot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220922369.8U CN217129494U (en) | 2022-04-20 | 2022-04-20 | Anti-blocking drift size gauge tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220922369.8U CN217129494U (en) | 2022-04-20 | 2022-04-20 | Anti-blocking drift size gauge tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217129494U true CN217129494U (en) | 2022-08-05 |
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ID=82649401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220922369.8U Active CN217129494U (en) | 2022-04-20 | 2022-04-20 | Anti-blocking drift size gauge tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217129494U (en) |
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2022
- 2022-04-20 CN CN202220922369.8U patent/CN217129494U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230613 Address after: 225009 No.1, Wenhui West Road, Yangzhou Economic Development Zone, Jiangsu Province Patentee after: SINOPEC Group Patentee after: SINOPEC GROUP JIANGSU PETROLEUM EXPLORATION BUREAU Co.,Ltd. Patentee after: JIANGSU OILFIELD MINING DEVELOPMENT Co.,Ltd. Address before: 225009 No.1, Wenhui West Road, Yangzhou Economic Development Zone, Jiangsu Province Patentee before: JIANGSU OILFIELD MINING DEVELOPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |