CN114906759A - Method for lowering flexible pipeline by using friction type winch shaft - Google Patents
Method for lowering flexible pipeline by using friction type winch shaft Download PDFInfo
- Publication number
- CN114906759A CN114906759A CN202210487275.7A CN202210487275A CN114906759A CN 114906759 A CN114906759 A CN 114906759A CN 202210487275 A CN202210487275 A CN 202210487275A CN 114906759 A CN114906759 A CN 114906759A
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- Prior art keywords
- flexible pipeline
- head
- flexible
- rope
- winch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a method for lowering a flexible pipeline by using a friction type winch shaft, which is characterized in that an overlong medium-large-diameter flexible pipeline is conveyed to the shaft by using a safety rope, the gravity of the flexible pipeline is completely stressed on a cage, meanwhile, a stable rope is used as a rope path, the winch is started to maintain the speed and is lowered, the flexible pipeline moves downwards along with the cage, and the head of the flexible pipeline slides downwards along the stable rope; when the flexible pipeline reaches a lower wellhead, the winch is used for pulling out the flexible pipeline.
Description
Technical Field
The invention relates to the technical field of transportation of underground materials of mines, in particular to a method for lowering a flexible pipeline by using a friction type winch shaft.
Background
At present, mine transportation overlength material, especially to flexible pipeline's shaft transfer transportation, generally adopt the mode that the reel was transferred, but this kind of mode only is fit for the material of small pipe diameter, for example the transportation of cable, to the material of medium and large-scale pipe diameter, or the difficult pipeline that curls, just is not suitable for adopting this kind of method, consequently a lot of pipelines can only adopt steel pipeline, and the segmentation is transferred, then welds or the joint to the operation middle section, leads to the increase of material cost and time cost all cost.
In view of the foregoing, it is desirable to provide a method for solving the lowering problem of the ultra-long flexible pipeline with medium and large pipe diameters.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for lowering a flexible pipeline by using a friction type hoisting shaft aiming at the defects of the prior art, and the method for lowering the flexible pipeline by using the friction type hoisting shaft can realize the shaft lowering of the overlong flexible pipeline with the medium and large pipe diameters.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a method of lowering a flexible pipe using a friction-type hoisting shaft comprising the steps of:
(1) pulling the flexible pipeline to be lowered to a wellhead, and installing a flange at the tail part of the flexible pipeline;
(2) stopping the cage at a wellhead of the middle section where the flexible pipeline is located, enabling the bottom of the cage to be higher than the horizontal plane of the wellhead by a certain distance, and arranging a first supporting pipe above the wellhead;
(3) a second supporting pipe is arranged at a position which is positioned at the upper wellhead and is a certain distance away from the wellhead, then the safety rope is connected to the second supporting pipe, and meanwhile, a winch is arranged at the lower wellhead;
(4) binding the flexible pipeline by using a safety rope on the upper wellhead;
(5) on the premise that the safety rope pulls the flexible pipeline, the head of the flexible pipeline is conveyed into the shaft, the flexible pipeline needs to penetrate through the supporting pipe, and the head of the flexible pipeline is connected to the stabilizing rope in a sliding mode, so that the flexible pipeline can slide downwards along the stabilizing rope;
(6) the head of the flexible pipeline slides downwards along the stable rope under the action of the gravity of the flexible pipeline, the flexible pipeline is slowly lowered by using the safety rope while sliding, when the tail of the flexible pipeline reaches the middle position of the cage, the flange at the tail of the flexible pipeline is connected with the beam in the middle of the cage, when the gravity of the flexible pipeline is completely stressed on the beam in the middle of the cage, the safety rope on the flexible pipeline is loosened, the whole flexible pipeline is hung on the cage, and the head of the flexible pipeline is connected to the stable rope in a sliding manner;
(7) the winch is placed down at the slowest maintenance speed, the flexible pipeline moves downwards along with the cage, and the head of the flexible pipeline slides downwards along the stable rope;
(8) when the head of the flexible pipeline reaches the lower wellhead, the winch stops, the head of the flexible pipeline is detached from the stable rope, a flange is arranged at the head of the flexible pipeline, and the flange at the head of the flexible pipeline is connected with a rope of the winch;
(9) the winch is continuously lowered at the slowest overhauling speed, and the winch at the lower wellhead slowly pulls out the flexible pipeline at the same speed;
(10) when the tail part of the flexible pipeline reaches the well-descending opening, the flange at the tail part of the flexible pipeline is unfastened from the cross beam in the middle of the cage, the flange at the tail part of the flexible pipeline is dismounted, the winch completely pulls out the flexible pipeline, the flange at the head part of the flexible pipeline is unfastened from the rope of the winch, the flange at the head part of the flexible pipeline is dismounted, and the whole flexible pipeline is completely lowered.
As a further improved technical scheme of the invention, the step (1) is specifically as follows:
the flexible pipeline to be lowered is pulled to a wellhead, two pairs of flanges are installed at the tail of the flexible pipeline, and the two pairs of flanges are spaced by 10 cm.
As a further improved technical scheme of the invention, the step (2) is specifically as follows:
the cage is stopped at a well mouth in the middle section of the flexible pipeline, the bottom of the cage is 60cm higher than the horizontal plane of the well mouth, a first supporting pipe is arranged at a position 10cm higher than the well mouth, and the first supporting pipe is a 2-inch steel pipe.
As a further improved technical scheme of the invention, the step (3) is specifically as follows:
binding a second support pipe on a railway which is positioned at the upper wellhead and is 30m away from the wellhead, then winding a No. 20 safety rope around the second support pipe for two circles, and arranging a winch at the lower wellhead; wherein the second support tube is a 2-inch steel tube.
As a further improved technical scheme of the invention, the step (5) is specifically as follows:
on the premise that the safety rope pulls the flexible pipeline, the head of the flexible pipeline is conveyed into the shaft, the flexible pipeline must penetrate through the supporting pipe, the head of the flexible pipeline is tied by the number 8 iron wire, the number 8 iron wire is made into a movable ring, and the movable ring is buckled on the stable rope, so that the flexible pipeline can slide downwards along the stable rope through the movable ring.
As a further improved technical scheme of the invention, the step (6) is specifically as follows:
because flexible pipeline self action of gravity, flexible pipeline's head slides down along surely restricting, in the gliding, utilize the safety rope to slowly transfer flexible pipeline, when the intermediate position of flexible pipeline afterbody reachd double-deck cage, with No. 12 wire rope and hasp flange of flexible pipeline afterbody and the crossbeam locking connection in the middle of the double-deck cage, the gravity complete atress as flexible pipeline is on No. 12 wire rope, the safety rope on the flexible pipeline is loosened, whole flexible pipeline just hangs on double-deck cage this moment, the head of flexible pipeline passes through the movable ring sliding connection that strand silk was made on surely restricting.
As a further improved technical scheme of the invention, the step (8) is specifically as follows:
when the head of the flexible pipeline reaches the lower wellhead, the winch stops, the strand silk at the head of the flexible pipeline is untied, a flange is arranged at the head of the flexible pipeline, and the flange at the head of the flexible pipeline is connected with the rope of the winch in a locking mode through a No. 12 steel wire rope and a lock catch.
As a further improved technical scheme of the invention, the step (10) is specifically as follows:
when the tail part of the flexible pipeline reaches the well head, the flange and the lock catch at the tail part of the flexible pipeline are unfastened, the winch completely pulls out the flexible pipeline, the flange and the lock catch at the head part of the flexible pipeline are unfastened, and the whole flexible pipeline is completely transferred.
The invention has the beneficial effects that:
the invention utilizes the safety rope to send the ultra-long flexible pipeline with the middle and large pipe diameters to the shaft, utilizes the stable rope as the rope channel, lowers the maintenance speed of the winch to the well opening, pulls out the flexible pipeline by utilizing the winch, has simple process, low cost, lower requirement on mechanical equipment, good safety and convenient popularization and application, and solves the lowering problem of the ultra-long flexible pipeline with the middle and large pipe diameters.
Drawings
FIG. 1 is a diagram of lowering a flexible pipe at an upper wellhead into a wellbore.
Figure 2 is a view of the lowering of a flexible pipe in a wellbore.
Figure 3 is a drawing of the flexible tubing at the downhole wellhead out of the wellbore.
Detailed Description
The following further description of embodiments of the invention is made with reference to the accompanying drawings:
a method of lowering a flexible pipe using a friction hoist shaft wherein a friction hoist is used to drive a cage up and down along a stabilizing rope. The method specifically comprises the following steps:
as shown in fig. 1, in step (1), pulling a flexible pipeline 4 with a medium and large pipe diameter, which needs to be lowered down, to a wellhead, installing two auxiliary flanges 6 at the tail part of the flexible pipeline 4, wherein the two flanges 6 are separated by 10 cm;
step (2), stopping a cage 1 (adopting a double-layer cage) at a well mouth of a middle section where a flexible pipeline 4 is located, wherein the bottom of the cage 1 is 60cm higher than the horizontal plane of the well mouth, and welding a support pipe I3 at a position which is close to a well mouth safety door and 10cm higher than the well mouth, namely specifically, arranging a support rod close to the well mouth safety door, wherein the support pipe I3 is welded on the support rod; a first support pipe 3 is a 2-inch steel pipe;
step (3), binding a second support pipe 7 on a railway which is positioned at the upper wellhead and is about 30 meters away from the wellhead, wherein the second support pipe 7 is a 2-inch steel pipe, and then winding a No. 20 safety rope 5 around the second support pipe 7 for two circles; meanwhile, an electric winch 10 is arranged on a lower wellhead (namely a middle wellhead from the flexible pipeline 4);
step (4), binding the flexible pipeline 4 firmly by using a No. 20 safety rope 5 on the upper wellhead;
step (5), on the premise that the flexible pipeline 4 is pulled by the No. 20 safety rope 5, the head of the flexible pipeline 4 is conveyed into a shaft, the flexible pipeline 4 must penetrate through the supporting pipe I3 of the well mouth (the flexible pipeline 4 is prevented from being worn on the ground), the head of the flexible pipeline 4 is fastened by the No. 8 iron wire 2, the No. 8 iron wire 2 is made into a movable ring and is buckled on the stable rope 8, and the stable rope 8 is used as a rope way sliding downwards;
step (6), due to the self gravity of the flexible pipeline 4, the head of the flexible pipeline 4 slides downwards along the stabilizing rope 8, the flexible pipeline 4 is slowly lowered down by using the No. 20 safety rope 5 while sliding, when the tail of the flexible pipeline 4 reaches the middle position of the double-layer cage 1, the two flanges 6 at the tail of the flexible pipeline 4 are locked with a cross beam at the bottom of the upper layer of the cage 1 by using the two No. 12 steel wire ropes and the lock catches, only when the steel wire ropes are completely stressed, the No. 20 safety rope 5 on the flexible pipeline 4 can be loosened, the whole flexible pipeline 4 is hung on the cage 1, and the head of the flexible pipeline 4 is buckled on the stabilizing rope 8;
as shown in fig. 2, in step (7), the winch is lowered at the slowest overhaul speed, the condition of descending the well mouth is noted at any time when the winch is operated, and the monitored winch is in contact with the signal workers at the upper well mouth and the lower well mouth at any time;
as shown in fig. 3, in step (8), when the head of the flexible pipeline 4 reaches the well-lowering mouth, the winch is stopped, the iron wire No. 8 2 at the head of the flexible pipeline 4 is untied, the flange 6 is mounted at the head of the flexible pipeline 4, and the flange 6 at the head of the flexible pipeline 4 is locked with the steel wire rope 9 of the electric winch 10 by using a steel wire rope No. 12 and a lock catch;
step (9), slowly lowering the winch, and slowly pulling out the flexible pipeline 4 by the electric winch 10 at the lower wellhead at the same speed;
and (10) when the tail part of the flexible pipeline 4 reaches the lower wellhead, unlocking the lock catch and the flange 6 at the tail part of the flexible pipeline 4, completely pulling out the flexible pipeline 4 by the electric winch 10, unlocking the lock catch and the flange 6 at the head part of the flexible pipeline 4, and completely releasing the whole flexible pipeline 4.
The flange 6 in this embodiment is a common pipe flange, the pipe flange includes two semicircular flanges, and the engaging lugs on the two semicircular flanges are connected by bolts to form a full-circle flange fastened on the flexible pipe 4.
The invention utilizes the safety rope 5 to pull the ultra-long flexible pipeline 4 into the shaft, utilizes the stable rope as the rope path, lowers the maintenance speed of the winch to the well opening, utilizes the electric winch 10 to pull out the flexible pipeline 4, has simple process, low cost, lower requirement on mechanical equipment, good safety and convenient popularization and application.
The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.
Claims (8)
1. A method for lowering a flexible pipeline by using a friction type hoisting shaft is characterized by comprising the following steps: the method comprises the following steps:
(1) pulling the flexible pipeline to be lowered to a wellhead, and installing a flange at the tail part of the flexible pipeline;
(2) stopping the cage at a wellhead of the middle section where the flexible pipeline is located, enabling the bottom of the cage to be higher than the horizontal plane of the wellhead by a certain distance, and arranging a first supporting pipe above the wellhead;
(3) a second supporting pipe is arranged at a position which is positioned at the upper wellhead and is a certain distance away from the wellhead, then the safety rope is connected to the second supporting pipe, and meanwhile, a winch is arranged at the lower wellhead;
(4) binding the flexible pipeline by using a safety rope at the upper wellhead;
(5) on the premise that the safety rope pulls the flexible pipeline, the head of the flexible pipeline is conveyed into the shaft, the flexible pipeline needs to penetrate through the supporting pipe, and the head of the flexible pipeline is connected to the stabilizing rope in a sliding mode, so that the flexible pipeline can slide downwards along the stabilizing rope;
(6) the head of the flexible pipeline slides downwards along the stable rope under the action of the gravity of the flexible pipeline, the flexible pipeline is slowly lowered by using the safety rope while sliding, when the tail of the flexible pipeline reaches the middle position of the cage, the flange at the tail of the flexible pipeline is connected with the beam in the middle of the cage, when the gravity of the flexible pipeline is completely stressed on the beam in the middle of the cage, the safety rope on the flexible pipeline is loosened, the whole flexible pipeline is hung on the cage, and the head of the flexible pipeline is connected to the stable rope in a sliding manner;
(7) the winch is placed down at the slowest maintenance speed, the flexible pipeline moves downwards along with the cage, and the head of the flexible pipeline slides downwards along the stable rope;
(8) when the head of the flexible pipeline reaches the lower wellhead, the winch stops, the head of the flexible pipeline is detached from the stable rope, a flange is arranged at the head of the flexible pipeline, and the flange at the head of the flexible pipeline is connected with a rope of the winch;
(9) the winch is continuously lowered at the slowest overhauling speed, and the winch at the lower wellhead slowly pulls out the flexible pipeline at the same speed;
(10) when the tail part of the flexible pipeline reaches the well head, the flange at the tail part of the flexible pipeline and the cross beam in the middle of the cage are unfastened, the flange at the tail part of the flexible pipeline is detached, the winch completely pulls out the flexible pipeline, the flange at the head part of the flexible pipeline and the rope of the winch are unfastened, the flange at the head part of the flexible pipeline is detached, and the whole flexible pipeline is completely transferred.
2. The method of lowering a flexible pipe using a friction winch shaft of claim 1, wherein: the step (1) is specifically as follows:
the flexible pipeline to be lowered is pulled to a wellhead, two pairs of flanges are installed at the tail of the flexible pipeline, and the two pairs of flanges are spaced by 10 cm.
3. The method of lowering a flexible pipe using a friction winch shaft of claim 2, wherein: the step (2) is specifically as follows:
the cage is stopped at a well mouth in the middle section of the flexible pipeline, the bottom of the cage is 60cm higher than the horizontal plane of the well mouth, a first supporting pipe is arranged at a position 10cm higher than the well mouth, and the first supporting pipe is a 2-inch steel pipe.
4. The method of lowering a flexible pipe using a friction hoisting shaft of claim 3, wherein: the step (3) is specifically as follows:
binding a second support pipe on a railway which is positioned at the upper wellhead and is 30m away from the wellhead, then winding a No. 20 safety rope around the second support pipe for two circles, and arranging a winch at the lower wellhead; wherein the second support tube is a 2-inch steel tube.
5. The method of lowering a flexible pipe using a friction hoisting shaft of claim 4, wherein: the step (5) is specifically as follows:
on the premise that the safety rope pulls the flexible pipeline, the head of the flexible pipeline is conveyed into the shaft, the flexible pipeline must penetrate through the supporting pipe, the head of the flexible pipeline is tied by the number 8 iron wire, the number 8 iron wire is made into a movable ring, and the movable ring is buckled on the stable rope, so that the flexible pipeline can slide downwards along the stable rope through the movable ring.
6. The method of lowering a flexible pipe using a friction hoisting shaft of claim 5, wherein: the step (6) is specifically as follows:
because flexible pipeline self action of gravity, flexible pipeline's head slides down along surely restricting, in the gliding, utilize the safety rope to slowly transfer flexible pipeline, when the intermediate position of flexible pipeline afterbody reachd double-deck cage, with No. 12 wire rope and hasp flange of flexible pipeline afterbody and the crossbeam locking connection in the middle of the double-deck cage, the gravity complete atress as flexible pipeline is on No. 12 wire rope, the safety rope on the flexible pipeline is loosened, whole flexible pipeline just hangs on double-deck cage this moment, the head of flexible pipeline passes through the movable ring sliding connection that strand silk was made on surely restricting.
7. The method of lowering a flexible pipe using a friction hoisting shaft of claim 6, wherein: the step (8) is specifically as follows:
when the head of the flexible pipeline reaches the lower wellhead, the winch stops, the strand silk at the head of the flexible pipeline is untied, a flange is arranged at the head of the flexible pipeline, and the flange at the head of the flexible pipeline is connected with the rope of the winch in a locking mode through a No. 12 steel wire rope and a lock catch.
8. The method of lowering a flexible pipe using a friction winch shaft of claim 7, wherein: the step (10) is specifically as follows:
when the tail part of the flexible pipeline reaches the well head, the flange and the lock catch at the tail part of the flexible pipeline are unfastened, the winch completely pulls out the flexible pipeline, the flange and the lock catch at the head part of the flexible pipeline are unfastened, and the whole flexible pipeline is completely transferred.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210487275.7A CN114906759B (en) | 2022-05-06 | 2022-05-06 | Method for lowering flexible pipeline by friction type hoisting shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210487275.7A CN114906759B (en) | 2022-05-06 | 2022-05-06 | Method for lowering flexible pipeline by friction type hoisting shaft |
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| Publication Number | Publication Date |
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| CN114906759A true CN114906759A (en) | 2022-08-16 |
| CN114906759B CN114906759B (en) | 2023-10-03 |
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| CN202210487275.7A Active CN114906759B (en) | 2022-05-06 | 2022-05-06 | Method for lowering flexible pipeline by friction type hoisting shaft |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1246839A (en) * | 1967-12-11 | 1971-09-22 | Inst Francais Du Petrole | Apparatus for stabilizing the position of tools or instruments suspended from a mobile aquatic installation, suitable in particular for carrying out operations in an underwater bore hole |
| US3866679A (en) * | 1972-10-25 | 1975-02-18 | Otis Eng Co | Apparatus for inserting flexible pipe into wells |
| US4374530A (en) * | 1982-02-01 | 1983-02-22 | Walling John B | Flexible production tubing |
| CN103466038A (en) * | 2013-08-30 | 2013-12-25 | 中国海洋石油总公司 | Method for changing connecting tubes in FPSO (floating production storage and offloading) single-point buoys |
| CN108709012A (en) * | 2018-05-04 | 2018-10-26 | 深圳海油工程水下技术有限公司 | A kind of vertical laying method of flexible hose |
| WO2019093904A1 (en) * | 2017-11-12 | 2019-05-16 | Bjorn Bro Sorensen | Flexible tube well intervention |
| CN113833518A (en) * | 2021-09-06 | 2021-12-24 | 中国华冶科工集团有限公司 | Blanking method for mine shaft |
-
2022
- 2022-05-06 CN CN202210487275.7A patent/CN114906759B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1246839A (en) * | 1967-12-11 | 1971-09-22 | Inst Francais Du Petrole | Apparatus for stabilizing the position of tools or instruments suspended from a mobile aquatic installation, suitable in particular for carrying out operations in an underwater bore hole |
| US3866679A (en) * | 1972-10-25 | 1975-02-18 | Otis Eng Co | Apparatus for inserting flexible pipe into wells |
| US4374530A (en) * | 1982-02-01 | 1983-02-22 | Walling John B | Flexible production tubing |
| CN103466038A (en) * | 2013-08-30 | 2013-12-25 | 中国海洋石油总公司 | Method for changing connecting tubes in FPSO (floating production storage and offloading) single-point buoys |
| WO2019093904A1 (en) * | 2017-11-12 | 2019-05-16 | Bjorn Bro Sorensen | Flexible tube well intervention |
| CN108709012A (en) * | 2018-05-04 | 2018-10-26 | 深圳海油工程水下技术有限公司 | A kind of vertical laying method of flexible hose |
| CN113833518A (en) * | 2021-09-06 | 2021-12-24 | 中国华冶科工集团有限公司 | Blanking method for mine shaft |
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| Publication number | Publication date |
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| CN114906759B (en) | 2023-10-03 |
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