CN203808903U - Sealed fishing spear - Google Patents
Sealed fishing spear Download PDFInfo
- Publication number
- CN203808903U CN203808903U CN201420081651.3U CN201420081651U CN203808903U CN 203808903 U CN203808903 U CN 203808903U CN 201420081651 U CN201420081651 U CN 201420081651U CN 203808903 U CN203808903 U CN 203808903U
- Authority
- CN
- China
- Prior art keywords
- fishing
- cone
- external diameter
- lance
- fishing slip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides a sealed fishing spear. The sealed fishing spear comprises a spear rod, a locking cap, a pair of fishing slips, a cone and a sealed portion, wherein the spear rod is a hollow pipe body, an upper end of the spear rod is connected with an upper joint through an external thread, and a guiding portion is disposed at the lower end of the spear rod; the locking cap movably sleeves the spear rod, and a locking annular groove is formed in the inner side surface of the lower end of the locking cap in a diameter expansion mode; the fishing slips movably sleeve the fishing spear and are adjacent to the lower side of the locking cap, and the upper ends of the fishing slips contact with the lower end of the locking cap; the cone movably sleeves the spear rod, the outer diameter of the lower end of the cone is larger than that of the upper end of the cone and smaller than that of lower ends of the fishing slips, the upper end of the cone is adjacent to the lower ends of the fishing slips, the upper end of the cone can prop open the lower ends of the fishing slips, and the locking annular groove can sleeve the upper ends of the fishing slips; the sealed portion is located between the cone and the upper end of the guiding portion, and comprises two rubber sleeves and a distance ring, the two rubber sleeves sleeve the spear rod, the distance ring is located between the two rubber sleeves, and the outer diameter of the lower ends of the fishing slips is larger than that of the rubber sleeves, the distance ring and the guiding portion.
Description
Technical field
The utility model relates to a kind of fishing tool of salvaging fish in oil gas water well, particularly, is a kind of sealed lance that drags for.
Background technology
In Oil/gas Well operation, the existing lance that drags for does not all have sealing device, after salvaging successfully, can only realize the workover fluid circulation of dragging for the above oil jacket annular space of lance, can not realize workover fluid circulation to the casing annulus below fish,, there is larger well control risk in particularly oil well high for pressure, that air pressure the is large kill-job that can not thoroughly circulate.In addition, there is no sealing device owing to dragging for lance, the kill-job that can not circulate, can only push well, and kill-job difficulty is high, success rate is little.
In addition, in use find, also there is very large drawback in the existing lance that drags for when for Quick blowout control operation, although it is fast to rob the speed of spray, is simple closing well.
In view of this, the design people, according to the Production design experience of being engaged in for many years this area and association area, develops a kind of sealed lance that drags for, the problem existing to solving prior art.
Utility model content
The purpose of this utility model is to be to provide a kind of sealed lance that drags for, and reliable working performance, can realize the salvaging to fish, can wash kill-job to the casing annulus below fish again, has overcome the defect of prior art.
For this reason, the utility model proposes a kind of sealed lance that drags for, its spy includes:
Shaft, described shaft is a hollow tube, and its upper end is connected with a top connection by external screw thread, and its lower end is provided with a guidance part;
Locking cap, mobile being set in described shaft, the medial surface hole enlargement of its lower end is formed with a locking annular groove;
Fishing slip, drags on lance described in mobile being set in, and adjacent to the downside of described locking cap, its upper end contacts with the lower end of described locking cap;
Cone, mobile being set in described shaft, the external diameter of described cone lower end is greater than the external diameter of its upper end, and be less than the external diameter of described fishing slip lower end, the upper end of described cone is adjacent to the lower end of described fishing slip, in the time that described cone is up, and the lower end that its upper end can protrude into the inner chamber of described fishing slip and shore out described fishing slip, the upper end of described fishing slip correspondence fits in described shaft, makes described locking annular groove can corresponding be set in the upper end of described fishing slip;
Hermetic unit, between described cone and the upper end of described guidance part, it comprises two packing elements and the spacer ring that are set in described shaft, described spacer ring is described in two between packing element;
Wherein, the external diameter of described fishing slip lower end is greater than the external diameter of described packing element, spacer ring and guidance part.
The sealed lance that drags for as above, wherein, the external diameter of described guidance part upper end is greater than the external diameter of its lower end.
The sealed lance that drags for the utility model proposes, novel structure, reliable working performance, is requisite kit in oil gas water well salvaging process, is specially adapted to salvage cylindrical fish; The structure matching by shaft, locking cap, fishing slip and cone are set, realizes the reliable salvaging to fish; By packing element is set, can seal the annular space of the utility model and fish inner chamber, prevent that well liquid is in the leakage of dragging between lance and fish inner chamber, efficiently solving oil gas water well salvages in construction, well liquid can not be by the fish chamber problem of returning that circulates, realize the object that fish downside casing annulus is fully rinsed, avoided the generation of blowout out of control accident, greatly improved safety, the validity of salvaging construction.
The sealed lance that drags for the utility model proposes, can also be widely used in Quick blowout control operation, in the time implementing to use, the sealed lance that drags for is connected in and robs spray tool lower portion, once there is blowout in a lower tubular column process, to drag for lance G.I.H tubing string, on carry the spray instrument of robbing, can by drag for lance by tubing string in well with rob spray instrument and be connected, and lance and oil pipe annular space are dragged in sealing, greatly improve the speed of robbing spray, do not reach button and just can rob the successful object of spray, greatly ensure to rob and be sprayed into power, be specially adapted to be difficult to tip in the situation that spray is failed of robbing causing robbing gusher mouth because of special circumstances (as larger in oil pipe spray gesture), realize circulation kill-job.
Brief description of the drawings
Fig. 1 is the sealed structural representation that drags for lance of the present utility model.
Critical element label declaration:
Detailed description of the invention
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast brief description of the drawings detailed description of the invention of the present utility model:
Fig. 1 is the sealed structural representation that drags for lance of the present utility model.
Referring to Fig. 1, the sealed lance that drags for the utility model proposes, it includes shaft 1, locking cap 2, fishing slip 3, cone 4 and hermetic unit 5, wherein:
Described shaft 1 is a hollow tube, its upper end is connected with a top connection 11 by external screw thread, its lower end is provided with a guidance part 12, this guidance part 12 can guide shaft to enter fish inner chamber, improve and salvage efficiency, in the time of work, by the inner chamber of this shaft, the workover fluid injecting to down-hole can return to ground, realizes the function of washing kill-job;
Described locking cap 2, mobile being set in described shaft 1, the medial surface hole enlargement of its lower end is formed with a locking annular groove 21;
Described fishing slip 3, described in mobile being set in, drag on lance 1, and adjacent to the downside of described locking cap 2, its upper end contacts with the lower end of described locking cap 2, wherein, in the time of assembling, for reaching better working effect, conventionally select the external diameter of fishing slip to be slightly larger than the internal diameter of fish to be salvaged, wherein, because this fishing slip is prior art, its concrete structure and operating principle are not repeated;
Described cone 4, mobile being set in described shaft 1, the external diameter of described cone 4 lower ends is greater than the external diameter of its upper end, and be less than the external diameter of described fishing slip 3 lower ends, the upper end of described cone 4 is adjacent to the lower end of described fishing slip 3, in the time that described cone 4 is up, the lower end that its upper end can protrude into the inner chamber of described fishing slip 3 and shore out described fishing slip 3, the upper end of described fishing slip 3 correspondence fits in described shaft 1, makes described locking annular groove 21 can corresponding be set in the upper end of described fishing slip 3;
Described hermetic unit 5, between described cone 4 and the upper end of described guidance part 12, it comprises two packing elements 51 and the spacer ring 52 that are set in described shaft 1, described spacer ring 52 is between packing element described in two 51; Wherein, the external diameter of described fishing slip 3 lower ends is greater than the external diameter of described packing element 51, spacer ring 52 and guidance part 12.
In order to reach better result of use, as shown in the figure, the external diameter of preferred described guidance part 12 upper ends is greater than the external diameter of its lower end, so that be formed as a taper guidance part, has further improved operating efficiency.
Referring to Fig. 1, the sealed lance that drags for the utility model proposes, in the specific implementation, on ground, the top of top connection 11 is connected in to fishing string, again with under fishing string in the lump lower going-into-well, make sealing formula drag for lance and introduce fish chamber, because fishing slip 3 external diameters are conventionally selected and are slightly larger than fish internal diameter, it is up that top of fish can promote fishing slip 3, and separate with cone 4, descending along with fishing string, what top connection 11 and locking cap 2 can restriction fishing slips 3 is up, makes fishing slip 3 enter fish chamber, is close to and fixes on fish inwall, subsequently, on carry fishing string, this shaft 1 is with movable cone 4 up, the lower end that makes cone 4 protrude into the inner chamber of described fishing slip 3 and shore out described fishing slip 3, fishing slip 3 lower ends are outwards strutted, and along with the increase of upper lifting force, it is cumulative that cone 4 stretches into the degree of depth of fishing slip 3, the outer tension that fishing slip 3 is applied in also increases thereupon, the screw thread wedging fish inwall in its outside, lower end, make fishing slip 3 and cone 4 be fixed motionless, simultaneously, because fishing slip 3 lower ends radially swell, its upper end can relatively radially dwindle, and enter in retaining ring groove 21, , locking cap 2 is descending under Action of Gravity Field, make described locking annular groove 21 can corresponding be set in the upper end of described fishing slip 3, thereby fishing slip 3 upper ends are embedded in locking annular groove 21 can not be moved up and down and can not radially expand outwardly, keep fishing slip and fish inwall all the time in fixing state,
Subsequently, fishing string continues to drive shaft 1 up, utilizes guidance part 12 to coordinate compression packing element 51 with cone 4, and packing element 51 diameters become large and contact with fish inner chamber, to seal the annular space between the utility model and fish inner chamber, realize sealing, according to need of work, kill job is washed in down-hole, particularly, inject high-pressure well liquid at well head in by oil pipe or sleeve pipe, well liquid is after the casing annulus to fish downside rinses, can be entered in fish inner chamber by downside, due to packing element and fish bore seal, make well liquid be back to ground by shaft inner chamber, thereby realizing well liquid circulates in fish bottom, reach the object of fish downside casing annulus being washed to kill-job, effectively prevent that liquid is by the leakage of fish inner chamber, afterwards, again, carry fishing string, so that fish is pulled out, thereby complete the object of salvaging and washing kill-job.
In addition, the sealed lance that drags for the utility model proposes, can also be widely used in Quick blowout control operation, in the time implementing to use, the sealed lance that drags for is connected in and robs spray tool lower portion, once there is blowout in a lower tubular column process, to drag for lance G.I.H tubing string, on carry the spray instrument of robbing, can by drag for lance by tubing string in well with rob spray instrument and be connected, and lance and oil pipe annular space are dragged in sealing, greatly improve the speed of robbing spray, do not reach button and just can rob the successful object of spray, greatly ensure to rob and be sprayed into power, be specially adapted to be difficult to tip in the situation that spray is failed of robbing causing robbing gusher mouth because of special circumstances (as larger in oil pipe spray gesture), realize circulation kill-job.
The foregoing is only the schematic detailed description of the invention of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the amendment under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.
Claims (2)
1. the sealed lance that drags for, is characterized in that, the described sealed lance that drags for includes:
Shaft, described shaft is a hollow tube, and its upper end is connected with a top connection by external screw thread, and the lateral surface of its lower end is equipped with a guidance part;
Locking cap, mobile being set in described shaft, the medial surface hole enlargement of its lower end is formed with a locking annular groove;
Fishing slip, drags on lance described in mobile being set in, and adjacent to the downside of described locking cap, its upper end contacts with the lower end of described locking cap;
Cone, mobile being set in described shaft, the external diameter of described cone lower end is greater than the external diameter of its upper end, and be less than the external diameter of described fishing slip lower end, the upper end of described cone is adjacent to the lower end of described fishing slip, in the time that described cone is up, and the lower end that its upper end can protrude into the inner chamber of described fishing slip and shore out described fishing slip, the upper end of described fishing slip correspondence fits in described shaft, makes described locking annular groove can corresponding be set in the upper end of described fishing slip;
Hermetic unit, between described cone and the upper end of described guidance part, it comprises two packing elements and the spacer ring that are set in described shaft, described spacer ring is described in two between packing element;
Wherein, the external diameter of described fishing slip lower end is greater than the external diameter of described packing element, spacer ring and guidance part.
2. the sealed lance that drags for as claimed in claim 1, is characterized in that, the external diameter of described guidance part upper end is greater than the external diameter of its lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081651.3U CN203808903U (en) | 2014-02-25 | 2014-02-25 | Sealed fishing spear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081651.3U CN203808903U (en) | 2014-02-25 | 2014-02-25 | Sealed fishing spear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203808903U true CN203808903U (en) | 2014-09-03 |
Family
ID=51447676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420081651.3U Expired - Fee Related CN203808903U (en) | 2014-02-25 | 2014-02-25 | Sealed fishing spear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203808903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518193A (en) * | 2018-05-14 | 2018-09-11 | 中国石油天然气集团公司 | Light pipe shape junk unfreezing fishing device |
| CN108533203A (en) * | 2018-05-14 | 2018-09-14 | 中国石油天然气集团公司 | The integrated apparatus of multifunctional comprehensive unfreezing fishing coiled tubing |
-
2014
- 2014-02-25 CN CN201420081651.3U patent/CN203808903U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518193A (en) * | 2018-05-14 | 2018-09-11 | 中国石油天然气集团公司 | Light pipe shape junk unfreezing fishing device |
| CN108533203A (en) * | 2018-05-14 | 2018-09-14 | 中国石油天然气集团公司 | The integrated apparatus of multifunctional comprehensive unfreezing fishing coiled tubing |
| CN108533203B (en) * | 2018-05-14 | 2024-02-23 | 中国石油天然气集团公司 | Multifunctional integrated device for unlocking and fishing coiled tubing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 |