CN212024638U - Cable crown block with pressure - Google Patents
Cable crown block with pressure Download PDFInfo
- Publication number
- CN212024638U CN212024638U CN202020218038.7U CN202020218038U CN212024638U CN 212024638 U CN212024638 U CN 212024638U CN 202020218038 U CN202020218038 U CN 202020218038U CN 212024638 U CN212024638 U CN 212024638U
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- cable
- pressure
- crown block
- interior casing
- wall
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- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 239000004519 grease Substances 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 230000001050 lubricating effect Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000005461 lubrication Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 description 15
- 238000010276 construction Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a take cable overhead sheave of pressure, including shell body and interior casing, in interior casing embedding shell body, be equipped with the rolling device between shell body inner wall and the interior casing wall, be equipped with the cable duct on the rolling device, the shell body both sides seted up with the perforation that the cable duct link up, the lubrication hole has been seted up on the interior casing wall. The cable crown block with pressure can bear the pressure of the same pressure level as other pressure-bearing parts, one end of the cable crown block with pressure is used for connecting an upper catcher or a cutter and a blowout preventer in oil-gas well cable logging, perforation or steel wire rope and steel wire rope operation with pressure, the other end of the cable crown block with pressure is connected with a grease injection sealing head, a blowout preventer box and a cable scraper, so that the tools rotate 180 degrees downwards, the integral connection and hoisting height of a wellhead blowout preventer can be effectively reduced through the mode, the height requirement of a hoisting device on site is reduced, and the operation cost of oil field cable logging, perforation and other similar operation with pressure is reduced.
Description
Technical Field
The utility model relates to a petroleum and natural gas industry oil gas field well logging technical field especially relates to a take pressure cable sky pulley.
Background
The traditional operation mode is as follows: the wellhead conversion flange or joint, the blowout preventer and the lower catcher are sequentially and upwards connected from a wellhead, wellhead blowout prevention assemblies such as a plurality of blowout prevention pipes, an upper catcher, a shear, a sealing head, a blowout prevention box, a cable scraper, a hoisting tool, a common crown block and the like are horizontally connected on the ground, the blowout prevention pipe string which is connected with the ground is integrally and vertically hoisted by a hoisting ring of the hoisting tool hung by a crane hook, and the lowest end of the blowout prevention pipe string is connected with the lower catcher which is installed on the wellhead. The hoisting tool comprises a hoisting triangular plate, hoisting clamp plates and two longer steel wire rope riggings, wherein the hoisting clamp plates are fixed at the topmost ends of a plurality of blowout prevention pipes, a hoisting ring at the topmost end of the hoisting triangular plate is hung on a crane hook, a common top pulley is hung on a hoisting ring in the middle of the lower side of the hoisting triangular plate, an upper catcher, a shearer, a grease injection sealing head, a blowout prevention box, a cable scraper and a common top pulley are respectively arranged between the hoisting clamp plates and the two steel wire ropes between the hoisting triangular plate from bottom to top, and except the common top pulley, other parts are pressure-bearing parts. The cable bypasses one end of the common crown block and enters downwards into the cable scraping device, the blowout prevention box, the grease injection sealing head, the shearer, the upper catcher and the blowout prevention pipe, the tail end of the cable is connected with the downhole instrument string or the tool string, and one end of the cable bypasses a ground pulley arranged on a wellhead and is wound on a roller of the logging truck.
In order to reduce eccentric wear of a cable entering the cable scraper from one side of the ordinary top sheave as much as possible, the distance between the ordinary top sheave and the top end of the cable scraper is as large as possible, so that a hoisting steel wire rope has to have enough length, so that the height from a crane hook to the ground is very high, and in certain operations such as pumping bridge plug perforation operation, in order to improve efficiency, the blowout preventer string is required not to be laid down, the blowout preventer string is required to be vertically taken out of or put into the bottom end of the blowout preventer, and the blowout preventer string is required to be hoisted to a higher height, so that a higher requirement is put on the effective hoisting height of a crane. Therefore, the effective hoisting height of the crane has higher requirements in the construction operation, the higher the effective height of the crane is, the larger the tonnage of the crane is, the higher the purchase or lease cost of the crane is, and the higher the operation cost is. Meanwhile, the sealing head assembly is small in outer diameter and poor in rigidity, and is easy to stress and bend when the blowout preventer string is lifted from a horizontal state to a vertical state or is laid down from the vertical state to the horizontal state. In addition, the distance between the common top pulley and the bell mouth at the uppermost end of the cable scraper is limited, the phenomenon of eccentric abrasion between the cable coming out of the top pulley and entering the blowout prevention pipe and the inner wall of a part of the cable scraper cannot be avoided, and the abrasion of related parts of the cable scraper and the shortening of the service life of the cable are easily caused.
Disclosure of Invention
To the problem that exists, the utility model aims at providing a take cable crown block, including shell body and interior casing, in interior casing embedding shell body, be equipped with the rolling device between shell body inner wall and the interior casing wall, be equipped with the cable duct on the rolling device, the shell body both sides seted up with the perforation that the cable duct link up, the lubrication hole has been seted up on the interior casing inner wall. Through the cable crown block with pressure, a hoisting tool consisting of a hoisting triangle plate, a hoisting clamping plate and a steel wire rope rigging is removed, one end of the hoisting tool is connected with a shear or an upper catcher and a blowout prevention pipe, the other end of the hoisting tool is reversely and downwards connected with a grease injection sealing head, a blowout prevention box and a cable scraper, a hoisting shackle or a grommet is directly hoisted at the upper end of the cable crown block with pressure by using a hoisting hook of a crane, and the grease injection sealing head reversely and downwards is fixed with the blowout prevention pipe through a connecting plate, so that the connection and hoisting total height of a wellhead blowout prevention device can be effectively reduced, the requirement of construction operation on the effective hoisting height of hoisting equipment is lowered, the construction operation cost is lowered, and the bending and breaking risks of a grease injection sealing head assembly in the; in addition, the distance is longer when the cable comes out from the cable scraper and winds through the ground pulley downwards, and eccentric wear of the cable to relevant parts of the cable scraper can be effectively reduced.
In order to achieve the above object, the utility model adopts the following technical scheme: a cable overhead sheave with pressure is characterized in that: including shell body and interior casing, interior casing embedding shell is internal, be equipped with the rolling device between shell body inner wall and the interior casing outer wall, be equipped with the cable duct on the rolling device, the shell body both sides seted up with the perforation that the cable duct link up, the last lubrication hole of having seted up of interior casing inner wall.
Preferably, the rolling device comprises a T-shaped pulley body and cylindrical rollers, the cylindrical rollers are arranged on two sides of the T-shaped pulley body, and the cable groove is formed in the top of the T-shaped pulley body.
Preferably, the outer wall of the inner shell is of a step groove structure and comprises a first step, a second step and a track groove matched with the cylindrical roller, and the side wall of the outer shell is abutted against the first step.
Preferably, a port sealing body is arranged on the left side of the T-shaped pulley body, and a third step matched with the port sealing body for limiting is arranged on the inner shell.
Preferably, first seal groove has been seted up to port seal both sides, the second seal groove has been seted up on the interior casing on T font pulley body right side, all be equipped with the sealing washer in first seal groove and the second seal groove.
Preferably, a locking nut is fixed on the right side of the outer shell and abuts against the port sealing body.
Preferably, the lubricating hole is provided with a grease injection joint.
The utility model has the advantages that: (1) the overhead pulley for the cable with pressure effectively reduces the total height of the wellhead blowout preventer during connection and lifting, reduces the requirements of construction operation on the effective lifting height and tonnage of lifting equipment, and reduces the construction operation cost. (2) The bending and breaking risks of the sealing head assembly in the lifting and falling processes are avoided. (3) Alleviate cable and scrape cable ware or prevent spouting box horn mouth eccentric wear degree, effectively prolong cable life.
Drawings
Fig. 1 is a front view structure diagram of the belt-pressure cable crown block of the utility model.
Fig. 2 is a sectional view of the present invention taken along the direction of fig. 1A.
Fig. 3 is an enlarged view of fig. 2B according to the present invention.
Fig. 4 is the whole side view of the cable crown block with pressure of the utility model.
Fig. 5 is a sectional view of the present invention taken along the direction of fig. 4C.
Fig. 6 is the utility model discloses take pressure cable overhead sheave and well head to prevent spouting the tubular column and connect the schematic diagram.
Fig. 7 is a schematic view of a conventional wellhead connection without the use of a cable overhead sheave with pressure.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.
Referring to the attached drawings 1 ~ 7 show a take cable crown block, including shell body 1 and interior casing 2, interior casing 2 imbeds in the shell body 1, be equipped with rolling device between 1 inner wall of shell body and the interior casing 2 outer wall, be equipped with cable duct 31 on the rolling device, shell body 1 both sides seted up with perforation 101 that cable duct 31 link up, one side is used for connecting sealed head and scrapes cable ware 13, and one side is used for connecting well head tubular columns such as catcher 15, lubricator 14 through crossover sub 16 in addition, lubricating hole 21 has been seted up on the 2 inner walls of interior casing, lubricates rolling device through this lubricating hole 21, and wherein, logging cable 12 runs through in perforation 101 and cable duct 31 to transfer and promote the removal along with rolling device.
Further in order to facilitate smooth movement of the logging cable 12, the rolling device comprises a T-shaped pulley body 3 and cylindrical rollers 7, the cylindrical rollers 7 are arranged on two sides of the T-shaped pulley body 3, the cable groove 31 is formed in the top of the T-shaped pulley body 3, and the T-shaped pulley body 3 rolls on the inner shell 2 through the cylindrical rollers 7.
Further in order to facilitate the rapid assembly and smooth rolling of the rolling device, the outer wall of the inner shell 2 is of a step groove structure and comprises a first step 22, a second step 23 and a track groove 24 formed in the cylindrical roller 7, the side wall of the outer shell 1 abuts against the first step 22, and the installation and the positioning of the outer shell 1 and the inner shell 2 are ensured.
Further in order to seal after the rolling device is assembled, a port sealing body 5 is arranged on the left side of the T-shaped pulley body 3 and clamped between the outer shell 1 and the inner shell 2 to jointly form an annular closed cavity to form integral sealing of the rolling device, and a third step 25 limiting the port sealing body 5 is arranged on the inner shell 2 to prevent the port sealing body 5 from contacting the cylindrical roller 7 and influencing the rotation of the T-shaped pulley body 3.
Further in order to improve the sealing of the rolling device, first seal grooves 51 have been seted up at the port seal body 5 both sides, second seal groove 26 has been seted up on the interior casing 2 on T font pulley body 5 right side, all be equipped with sealing washer 8 in first seal groove 51 and the second seal groove 26, through set up the seal groove in rolling device both sides, improve the sealed effect to the rolling device.
Further in order to prevent the port sealing body 5 from moving axially under a pressure state, a locking nut 4 is fixed on the right side of the outer shell 1, and the locking nut 4 abuts against the port sealing body 5 to axially limit the port sealing body 5.
Further, the lubricating device is convenient to lubricate, the lubricating hole 21 is provided with a grease injection joint 11, and lubricating grease is injected from the grease injection joint 11 so as to lubricate the two sets of cylindrical rollers 7 and ensure that the pulley body 3 runs smoothly around the inner shell 2.
Further in order to be convenient for wholly installing the pulley device, 1 top of shell body is equipped with bow-shaped shackle 6, in order to alleviate on-the-spot intensity of labour, reduces the whole weight of pulley, parts such as shell body 1, interior casing 2, T font pulley body 3, lock nut 4 and port seal 5 adopt titanium alloy or aluminum alloy high strength low density alloy material to reduce the whole weight of pulley, be convenient for under the on-the-spot hoisting equipment circumstances that does not have, just can mention the operation connection with pulley device wholly through bow-shaped shackle 6.
The principle of the utility model is that: the logging cable 12 is arranged in the cable groove 31 in a penetrating mode, and the winding and unwinding operation is carried out through the relative rolling of the T-shaped pulley body 3 and the cylindrical roller 7; the logging cable 12 penetrates out of the through hole 101 of the pulley device, one end of the logging cable is used for connecting a sealing head and a cable scraper 13, and the other end of the logging cable is sequentially connected with a wellhead pipe column assembly such as a catcher 15 and a blowout prevention pipe 14 through an adapter 16, so that logging operation is realized.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A cable overhead sheave with pressure is characterized in that: including shell body (1) and interior casing (2), interior casing (2) imbed in shell body (1), be equipped with the rolling device between shell body (1) inner wall and interior casing (2) outer wall, be equipped with cable duct (31) on the rolling device, shell body (1) both sides seted up with perforation (101) that cable duct (31) link up, lubricated hole (21) have been seted up on interior casing (2) inner wall.
2. The cable crown block with pressure of claim 1, wherein: the rolling device comprises a T-shaped pulley body (3) and cylindrical rollers (7), the cylindrical rollers (7) are arranged on two sides of the T-shaped pulley body (3), and the cable groove (31) is formed in the top of the T-shaped pulley body (3).
3. The cable crown block with pressure of claim 2, wherein: the outer wall of the inner shell (2) is of a step groove structure and comprises a first step (22), a second step (23) and a track groove (24) formed by matching the cylindrical rollers (7), and the side wall of the outer shell (1) is abutted to the first step (22).
4. A cable crown block with pressure as claimed in claim 3, wherein: the left side of the T-shaped pulley body (3) is provided with a port sealing body (5), and the inner shell (2) is provided with a third step (25) which is matched with the port sealing body (5) for limiting.
5. The cable crown block with pressure of claim 4, wherein: first seal groove (51) have been seted up to port seal body (5) both sides, second seal groove (26) have been seted up on interior casing (2) on T font pulley body (3) right side, all be equipped with sealing washer (8) in first seal groove (51) and the second seal groove (26).
6. The cable crown block with pressure of claim 5, wherein: and a locking nut (4) is fixed on the right side of the outer shell (1), and the locking nut (4) is abutted against the port sealing body (5).
7. The cable crown block with pressure of claim 6, wherein: and a grease injection joint (11) is arranged on the lubricating hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020218038.7U CN212024638U (en) | 2020-02-27 | 2020-02-27 | Cable crown block with pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020218038.7U CN212024638U (en) | 2020-02-27 | 2020-02-27 | Cable crown block with pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212024638U true CN212024638U (en) | 2020-11-27 |
Family
ID=73491576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020218038.7U Active CN212024638U (en) | 2020-02-27 | 2020-02-27 | Cable crown block with pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212024638U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243617A (en) * | 2021-11-02 | 2022-03-25 | 中石化石油工程技术服务有限公司 | Pulley protector |
-
2020
- 2020-02-27 CN CN202020218038.7U patent/CN212024638U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243617A (en) * | 2021-11-02 | 2022-03-25 | 中石化石油工程技术服务有限公司 | Pulley protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 721306 Gaoxin 19 Road, Baoji high tech Development Zone, Shaanxi Province Patentee after: Baoji Saifu Petroleum Machinery Co.,Ltd. Country or region after: China Address before: 721000 No.19 Gaoxin Road, high tech Development Zone, Baoji City, Shaanxi Province Patentee before: BAOJI SAFE PETROLEUM MACHINERY Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |