CN111622703A - Tool and method for washing and salvaging small-sized falling objects through underground television of tubular column - Google Patents
Tool and method for washing and salvaging small-sized falling objects through underground television of tubular column Download PDFInfo
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- CN111622703A CN111622703A CN202010535065.1A CN202010535065A CN111622703A CN 111622703 A CN111622703 A CN 111622703A CN 202010535065 A CN202010535065 A CN 202010535065A CN 111622703 A CN111622703 A CN 111622703A
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- 238000005406 washing Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000011010 flushing procedure Methods 0.000 claims abstract description 78
- 238000003384 imaging method Methods 0.000 claims abstract description 69
- 230000000694 effects Effects 0.000 claims description 34
- 238000004140 cleaning Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 241001023788 Cyttus traversi Species 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000013049 sediment Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/03—Freeing by flushing
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Mechanical Engineering (AREA)
- Signal Processing (AREA)
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- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of treatment of conditions in oil and gas fields, and particularly relates to a tool and a method for fishing small-sized falling objects through underground television flushing of a tubular column. The invention uses the derrick, the derrick base, the ground cable car imaging terminal, the cable, the ground pulley, the crown block, the pipe column, the underground television and the washing fishing tool; the derrick is fixed on the ground of a wellhead through a derrick base; the upper end of the pipe column is connected to the derrick, and the lower end of the pipe column is connected with a washing fishing tool; the ground pulley is fixedly connected to the derrick base through a rope; the top pulley is fixedly connected to the derrick body through a rope; one end of the cable is connected with the ground cable car imaging terminal, the other end of the cable is connected with the underground television through the ground pulley and the crown block in sequence, and the underground television moves up and down in the pipe column through the cable. The invention provides a small junk fishing tool capable of improving fishing operation efficiency and operation success rate.
Description
Technical Field
The invention belongs to the technical field of treatment of conditions in oil and gas fields, and particularly relates to a tool and a method for fishing small-sized falling objects through underground television flushing of a tubular column.
Background
In the production process of an oil-gas well, various abnormal conditions can occur in the well, such as the oil casing pipe column is blocked or broken, a bit cone falls, a logging instrument or a cable is blocked, a cable wire rope is broken, a packer is blocked and the like, the bottom hole falling object is generally divided into a block body, a tubular body and a rope body, including an oil pipe, a bit, a drill rod, a metal ring, a clamp tooth, a piece, a cable and the like, when the bottom hole falling object is fished, the actual condition of the bottom hole falling object in the shaft is firstly detected and clearly detected, then a fishing tool which is suitable for the actual condition is selected and processed, the commonly used measure for judging the bottom hole falling object at present is the lead printing and the underground television imaging technology, the suitable fishing tool is selected according to the lead printing condition or the underground television imaging, but the observation sign is not obvious due to the successful fishing of the small falling object in the field fishing, the experience operation is, the fishing failure often occurs, the fishing needs to be carried out by pulling out the drill bit for many times, which not only takes time and labor, but also causes the damage of the bottom hole junk due to repeated fishing, and causes the fishing failure and even the severe catching result of repairing the abandoned well.
Disclosure of Invention
The invention provides a tool and a method for fishing small-sized junk through underground television washing of a tubular column, and aims to provide a fishing tool capable of improving fishing operation efficiency and operation success rate.
In order to achieve the purpose, the invention adopts the technical scheme that:
a television flushing and fishing small-sized junk tool in a tubular column underground at least comprises a derrick and a derrick base; the derrick is fixed on the ground of a wellhead through a derrick base; the system also comprises a ground cable car imaging terminal, a cable, a ground pulley, a crown block, a pipe column, an underground television and a washing fishing tool; the upper end of the pipe column is connected to the derrick, and the lower end of the pipe column is connected with a washing fishing tool; the ground pulley is fixedly connected to the derrick base through a rope; the top pulley is fixedly connected to the derrick body through a rope; one end of the cable is connected with the ground cable car imaging terminal, the other end of the cable is connected with the underground television through the ground pulley and the crown block in sequence, and the underground television moves up and down in the pipe column through the cable.
The flushing fishing tool is a fishing tool or a flushing tool; the fishing tool is a fishing female cone or other hollow fishing tools; the flushing tool is a flushing tool inclined tip or other hollow type cleaning tools.
The inner diameter of the flushing fishing tool is larger than 60 mm.
The ground cable car imaging terminal at least comprises a roller, a power supply and a signal receiver; the signal receiver is connected with an underground television electric signal through a cable; the cable is wound on the drum; the power supply is electrically connected with the roller and provides power for the rotation of the roller.
The underground television comprises a horse-head, a weighting rod, an electronic circuit short section, a centralizer short section and a camera short section; the bridle, the weighting rod, the electronic circuit short section, the centralizer short section and the camera short section are sequentially connected from top to bottom; and the camera short section is connected with an imaging terminal of the ground cable car through an electric signal through a cable after passing through the electronic circuit short section and the bridle.
An illuminating lamp, a storage battery, a side-looking camera lens and a downward-looking camera lens are arranged in the camera short section; the downward-looking camera lens and the side-looking camera lens are in electrical signal connection with the electronic circuit pup joint; the illuminating lamp is electrically connected with the storage battery.
The maximum outer diameter of the underground television is 54 mm.
The internal diameter of the pipe string is greater than 62 mm.
A salvaging and cleaning method for a television washing and salvaging small-sized junk tool under a tubular column comprises the following steps
The method comprises the following steps: tool connection
Connecting a television washing and salvaging small-sized junk tool under the tubular column according to the task property; when the operator cannot judge whether the bottom hole falling object is washed clean according to experience and the clean state of the returned flushing fluid, connecting a flushing tool inclined tip at the lower end of the pipe column and entering the second step; if the operator can not judge whether the bottom hole junk is salvaged according to the change of the suspended weight of the lifting system, connecting a fishing tool female cone at the lower end of the pipe column and then entering the third step;
step two: running the flushing pipe string into the shaft through a hoisting system of the derrick; controlling a roller in an imaging terminal of the ground cable car to slowly lower a cable, and observing the flushing effect of the bottom hole junk through the underground television at all times when the underground television is lowered to the inclined tip of the flushing tool at the bottom of the flushing pipe column; if the imaging effect of the underground television judges that no sundries are washed cleanly on the fallen objects at the bottom of the well, the circulation is stopped, the drum in the imaging terminal of the ground cable car is controlled to lift the cable until the underground television is lifted out of the washing pipe column, after the underground television is lifted out, the crown block and the ground block are disassembled, the lifting system of the derrick is operated to lift out the washing pipe column in the shaft, and the washing operation is finished; and if the sundries on the bottom-hole falling objects are judged not to be washed clean through the underground television imaging effect, continuously circulating to the bottom-hole falling objects to wash clean the sundries.
Step three: lowering the tubular string into the wellbore through a hoisting system of the derrick; the cable is slowly lowered by controlling a roller in the imaging terminal of the ground cable car, and the fishing effect of the bottom-hole junk is observed through the underground television at any time when the underground television is positioned above the female cone of the fishing tool at the bottom of the pipe column; if the underground television imaging effect is used for judging that the underground falling objects are successfully fished, the cable is lifted up by controlling the drum in the imaging terminal of the ground cable car until the underground television is lifted out of the pipe column, after the underground television is lifted out, the crown block and the ground block are disassembled, the lifting system of the derrick is operated to lift out the pipe column and the underground falling objects in the shaft, and the fishing operation is completed.
Has the advantages that:
(1) the invention utilizes the underground television to image the condition of the falling objects at the bottom of the well in real time, observes the cleaning condition of the falling objects at the bottom of the shaft in real time, and avoids the fishing difficulty caused by ineffective circulation or incomplete washing of the falling objects at the bottom of the well.
(2) When the fishing tool is used for grabbing the bottom hole junk, real-time imaging can be carried out through the bottom hole television, whether the fishing tool catches the bottom hole junk or not can be observed in real time, invalid tripping operation or improper damage to the bottom hole junk caused by the fact that the bottom hole junk is not successfully fished can be avoided, and the success rate of field operation is remarkably improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to clearly understand the technical solutions of the present invention and to implement the technical solutions according to the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the television flushing mini-junk tool through 2-7/8 inch tubing downhole of the present invention;
FIG. 3 is a schematic view of the television flushing mini-junk tool through 3-1/2 inch tubing downhole of the present invention;
FIG. 4 is a schematic view of the small-sized falling object flushing tool of the present invention, which is used for watching and flushing a 2-7/8 inch tubing downhole TV;
FIG. 5 is a schematic view of the TV set fishing tool for small junk in a well passing through 3-1/2 inches of drill pipes.
In the figure: 1-ground cable car imaging terminal; 2-a cable; 3-a ground pulley; 4-day pulley; 5-a derrick; 6-a derrick substructure; 7-a wellbore; 8-a pipe column; 9-a downhole television; 10-flushing the fishing tool; 11-bottom hole junk; 12-fishing tool female cone; 13-flushing tool bevel tip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-5, the television washing and salvaging small-sized junk tool in a tubular column well at least comprises a derrick 5 and a derrick base 6; the derrick 5 is fixed on the ground of a wellhead through a derrick base 6; the underground cable car is characterized by further comprising a ground cable car imaging terminal 1, a cable 2, a ground pulley 3, a crown block 4, a pipe column 8, an underground television 9 and a washing fishing tool 10; the upper end of the pipe column 8 is connected to the derrick 5, and the lower end of the pipe column 8 is connected with a washing fishing tool 10; the ground pulley 3 is fixedly connected to a derrick base 6 through a rope; the crown block 4 is fixedly connected to the derrick 5 body through a rope; one end of the cable 2 is connected with the ground cable car imaging terminal 1, the other end of the cable 2 is sequentially connected with the underground television 9 through the ground pulley 3 and the top pulley 4, and the underground television 9 moves up and down in the pipe column 8 through the cable 2.
In practical use, the through-pipe underground television flushing and fishing small-sized junk tools are firstly connected.
If the cleaning operation is needed, when the operator cannot judge whether the bottom hole falling object is washed clean according to experience and the clean state of the returned flushing fluid, the lower end of the pipe column 8 is connected with a washing tool, and then the washing pipe column 8 is put into the shaft 7 through a lifting system of the derrick 5; controlling the ground cable car imaging terminal 1 to slowly lower the cable 2, and observing the washing effect of the bottom sediment 11 through the underground television 9 at any time when the underground television 9 is lowered to the bottom of the washing tool at the bottom of the washing pipe column 8; if the imaging effect of the underground television 9 judges that no sundries are washed cleanly on the bottom-hole junk 11, the circulation is stopped, the ground cable car imaging terminal 1 is controlled to lift the cable 2 until the underground television 9 is lifted out of the washing pipe column 8, after the underground television 9 is lifted out, the crown block 4 and the ground block 3 are disassembled, the lifting system of the derrick 5 is operated to lift out the washing pipe column 8 in the shaft 7, and the washing operation is finished; if the imaging effect of the underground television 9 judges that the sundries on the bottom-hole falling objects 11 are not washed clean, the circulation is continued to the bottom-hole falling objects 11 to wash clean the sundries.
If fishing operation is required, when an operator cannot judge whether the bottom hole junk is fished according to the change of the suspended weight of the hoisting system, after the lower end of the pipe column 8 is connected with a fishing tool, the pipe column 8 is lowered into the shaft 7 through the hoisting system of the derrick 5; slowly lowering the cable 2 by controlling the imaging terminal 1 of the ground cable car, and observing the salvaging effect of the bottom falling object 11 by the underground television 9 at any time when the underground television 9 is positioned above the salvaging tool at the bottom of the pipe column 8; if the fishing of the bottom hole junk 11 is judged to be successful through the imaging effect of the underground television 9, the cable 2 is lifted up through controlling the ground cable car imaging terminal 1 until the underground television 9 is lifted out of the pipe column 8, after the underground television 9 is lifted out, the top pulley 4 and the ground pulley 3 are disassembled, the lifting system of the derrick 5 is operated to lift out the pipe column 8 and the bottom hole junk 11 in the shaft 7, and the fishing operation is completed.
The underground television is used for imaging the condition of the falling objects at the bottom of the well in real time, so that the cleaning condition of the falling objects at the bottom of the shaft can be observed in real time when underground cleaning operation is carried out, and the difficulty in fishing caused by invalid cleaning circulation or unclean flushing of the falling objects at the bottom of the well is avoided; when the underground fishing operation is carried out, the underground television can be used for real-time imaging, whether the fishing tool catches the bottom hole junk or not can be observed in real time, the phenomenon that the bottom hole junk is not successfully fished to cause invalid tripping operation or the bottom hole junk is improperly damaged by the technical scheme is avoided, and the success rate of the field operation is obviously improved.
Example two:
referring to fig. 1-5, a television flushing and fishing tool for a tubular column in a well is different from the first embodiment in that: the flushing fishing tool 10 is a fishing tool or a flushing tool; the fishing tool is a fishing female cone 12 or other hollow fishing tools; the flushing tool is a flushing tool inclined tip 13 or other hollow type cleaning tools.
Further, the inner diameter of the flushing fishing tool 10 is greater than 60 mm.
In practical use, after the lower end of the pipe column 8 is connected with the fishing tool female cone 12 or the flushing tool inclined tip 13, television real-time imaging under different operation tasks can be conveniently realized, and different task requirements can be conveniently and efficiently met. The fishing tool or the cleaning tool is hollow, and the passing requirement of the underground television 9 is met.
Example three:
referring to fig. 1-5, a television flushing and fishing tool for a tubular column in a well is different from the first embodiment in that: the ground cable car imaging terminal 1 at least comprises a roller, a power supply and a signal receiver; the signal receiver is in electric signal connection with an underground television 9 through a cable 2; the cable 2 is wound on a drum; the power supply is electrically connected with the roller and provides power for the rotation of the roller.
During the in-service use, set up the cylinder in ground cable car imaging terminal 1, can play out or go into pit shaft 7 with TV 9 in the pit when the surplus cable 2 of ground twines and collects, the convenient transfer and the lifting of TV 9 in the pit of accomplishing. The power for the rotation of the roller comes from a power supply arranged in the imaging terminal 1 of the ground cable car, and a vehicle-mounted generator can also be used for providing power for the rotation of the roller.
The signal receiver can process and decode the received image signal to form an image, and the real-time condition under the well can be conveniently judged.
Example four:
referring to fig. 1-5, a television flushing and fishing tool for a tubular column in a well is different from the first embodiment in that: the underground television 9 comprises a horse-head, a weighting rod, an electronic circuit short section, a centralizer short section and a camera short section; the bridle, the weighting rod, the electronic circuit short section, the centralizer short section and the camera short section are sequentially connected from top to bottom; the camera short section passes through the electronic circuit short section and the bridle and is connected with the ground cable car imaging terminal 1 through a cable 2.
Furthermore, an illuminating lamp, a storage battery, a side-looking camera lens and a downward-looking camera lens are arranged in the camera short section; the downward-looking camera lens and the side-looking camera lens are in electrical signal connection with the electronic circuit pup joint; the illuminating lamp is electrically connected with the storage battery.
When the underground television is actually used, a downward-looking camera lens of the camera short section can shoot and photograph falling objects below under the illumination of the rear lighting, and the downward-looking camera lens can judge whether the downward-looking depth of the underground television 9 is still in the tubular column 8; the centralizer short section can ensure that the underground television 9 is positioned at the central position in the pipe column when being put in, and the abrasion caused by the contact of a camera lens on the camera short section and the inner wall of the pipe column 8 when the underground television 9 is put in is avoided; and the electronic circuit pup joint amplifies the image signal acquired by the camera pup joint to generate a frequency pulse signal, and the frequency pulse signal is transmitted to the ground cable car imaging terminal 1 through the cockhead and the cable.
The camera nipple joint embeds there is light and downward-looking camera lens, can wash the limit and make a video recording observation shaft bottom junk and wash the condition, avoids washing the ineffectiveness after clean, promotes and washes the operating efficiency.
Example five:
referring to fig. 1-5, a television flushing and fishing tool for a tubular column in a well is different from the first embodiment in that: the maximum outer diameter of the underground television 9 is 54 mm.
The underground television 9 adopts the technical scheme, so that the requirement that the underground television 9 can smoothly pass through the flushing fishing tool 10 and the pipe column 8 is met.
Example six:
referring to fig. 1-5, a television flushing and fishing tool for a tubular column in a well is different from the first embodiment in that: the internal diameter of the pipe string 8 is greater than 62 mm.
In practical use, the tubular column 8 adopts the technical scheme, so as to meet the requirement of passing the underground television 9.
Example seven:
a salvaging and cleaning method for a television washing and salvaging small-sized junk tool under a tubular column comprises the following steps
The method comprises the following steps: tool connection
Connecting a television washing and salvaging small-sized junk tool under the tubular column according to the task property; when the operator cannot judge whether the bottom hole falling object is washed clean according to experience and the clean state of the returned flushing fluid, the lower end of the pipe column 8 is connected with a flushing tool inclined tip 13, and then the step II is carried out; if the operator can not judge whether the bottom hole junk is salvaged according to the change of the suspended weight of the lifting system, the third step is carried out after the lower end of the pipe column 8 is connected with a fishing tool female cone 12;
step two: running a flushing string 8 into the wellbore 7 through the hoisting system of the derrick 5; controlling a roller in the ground cable car imaging terminal 1 to slowly lower the cable 2, and observing the washing effect of the shaft bottom falling object 11 through the underground television 9 when the underground television 9 falls to the inclined tip 13 of the washing tool at the bottom of the washing pipe column 8; if the imaging effect of the underground television 9 is used for judging that no sundries are washed cleanly on the falling object 11 at the bottom of the well, the circulation is stopped, the cable 2 is lifted up by a roller in the imaging terminal 1 of the ground cable car until the underground television 9 is lifted out of the washing pipe column 8, after the underground television 9 is lifted out, the crown block 4 and the ground block 3 are disassembled, the lifting system of the derrick 5 is operated to lift out of the washing pipe column 8 in the shaft 7, and the washing operation is finished; if the imaging effect of the underground television 9 judges that the sundries on the bottom-hole falling objects 11 are not washed clean, the circulation is continued to the bottom-hole falling objects 11 to wash clean the sundries.
Step three: lowering the tubular string 8 into the wellbore 7 through the hoisting system of the derrick 5; slowly lowering the cable 2 by controlling a roller in the ground cable car imaging terminal 1, and observing the salvaging effect of the bottom sediment 11 through the underground television 9 at any time when the underground television 9 reaches the position above a salvaging tool female cone 12 at the bottom of the pipe column 8; if the fishing of the bottom hole junk 11 is judged to be successful through the imaging effect of the underground television 9, the cable 2 is lifted up by controlling the drum in the imaging terminal 1 of the ground cable car until the underground television 9 is lifted out of the pipe column 8, after the underground television 9 is lifted out, the crown block 4 and the ground block 3 are disassembled, the lifting system of the derrick 5 is operated to lift out the pipe column 8 and the bottom hole junk 11 in the shaft 7, and the fishing operation is completed.
Example eight:
referring to fig. 2, the present embodiment provides a 2-7/8 inch tubing downhole television flushing small-sized falling object tool, which comprises a surface cable car imaging terminal 1, a cable 2, a ground pulley 3, a crown pulley 4, a derrick 5, a derrick base 6, a shaft 7, a flushing pipe column 8, a downhole television 9, a flushing tool inclined tip 13 and a downhole falling object 11. The ground pulley 3 is fixed on a derrick base 6 through a steel wire rope; the crown block 4 is fixed on the derrick 5 body through a steel wire rope; the flushing pipe column 8 is lifted out or lowered into the shaft 7 through a lifting system of the derrick 5; the washing pipe column 8 is an oil pipe of 2-7/8 inches, and the inner diameter is 62 mm; the operation method for judging the flushing effect by stopping circulation after the flushing operation of the bottom hole junk 11 is finished comprises the following steps: when an operator judges that the bottom hole falling objects are washed clean according to experience and the cleaning state of the returned flushing liquid, the circulation is stopped, the operator operates the derrick 5 to lift the flushing pipe column 8 by about 10m, and slowly lowers the cable 2 by controlling the internal roller of the ground cable car imaging terminal 1 until the operator can see the flushing effect of the bottom hole falling objects 11 by the underground television 9; if it is judged through the TV 9 imaging effect in the pit that there is not debris on the junk 11 in the pit bottom to wash totally, the operation personnel lifts cable 2 through the inside cylinder of control ground cable car imaging terminal 1 until TV 9 in the pit plays out washing pipe column 8, and after TV 9 in the pit plays out, dismantles crown block 4 and ground pulley 3, and the operation personnel operates the hoist system of derrick 5 and plays out washing pipe column 8 in pit shaft 7, and this washing operation is accomplished.
Example nine:
referring to fig. 3, the present embodiment provides a 3-1/2 inch tubing downhole television flushing small-sized falling object tool, which comprises a surface cable car imaging terminal 1, a cable 2, a ground pulley 3, a crown pulley 4, a derrick 5, a derrick base 6, a shaft 7, a flushing pipe column 8, a downhole television 9, a flushing tool inclined tip 13 and a downhole falling object 11. The ground pulley 3 is fixed on a derrick base 6 through a steel wire rope; the crown block 4 is fixed on the derrick 5 body through a steel wire rope; the flushing pipe column 8 is lifted out or lowered into the shaft 7 through a lifting system of the derrick 5; the washing pipe column 8 is an oil pipe of 3-1/2 inches, and the inner diameter is 76 mm; the operation method for judging the flushing effect by stopping circulation after the flushing operation of the bottom hole junk 11 is finished comprises the following steps: when an operator judges that the bottom hole falling objects are washed clean according to experience and the cleaning state of the returned flushing liquid, the circulation is stopped, the operator operates the derrick 5 to lift the flushing pipe column 8 by about 10m, and slowly lowers the cable 2 by controlling the internal roller of the ground cable car imaging terminal 1 until the operator can see the flushing effect of the bottom hole falling objects 11 by the underground television 9; if the imaging effect of the underground television 9 is used for judging that sundries still exist on the bottom falling object 11 and are not washed clean, an operator slowly lifts the cable 2 until the underground television 9 is lifted into the washing pipe column 8 by controlling an internal roller of the imaging terminal 1 of the ground cable car, operates the lifting system of the derrick 5 to lower the washing pipe column 8 in the shaft 7 by about 10m and continues washing operation.
Example ten:
referring to fig. 4, the present embodiment provides a tool for observing and flushing small-sized falling objects through a 2-7/8 inch tubing downhole television at any time, which comprises a ground cable car imaging terminal 1, a cable 2, a ground pulley 3, a crown pulley 4, a derrick 5, a derrick base 6, a shaft 7, a flushing pipe column 8, a downhole television 9, a flushing tool inclined tip 13 and a downhole falling object 11. The ground pulley 3 is fixed on a derrick base 6 through a steel wire rope; the crown block 4 is fixed on the derrick 5 body through a steel wire rope; the flushing pipe column 8 is lifted out or lowered into the shaft 7 through a lifting system of the derrick 5; the washing pipe column 8 is an oil pipe of 2-7/8 inches, and the inner diameter is 62 mm; the operation method for observing the flushing effect at any time during the flushing operation of the bottom hole junk 11 comprises the following steps: when an operator cannot judge whether the bottom hole falling object is washed cleanly according to experience and the clean state of the returned flushing liquid, the operator can continuously and circularly wash the bottom hole falling object 11, slowly lower a cable 2 down a television 9 to a washing tool inclined tip 13 at the bottom of a washing pipe column 8 by controlling an internal roller of an imaging terminal 1 of a ground cable car, and observe the washing effect of the bottom hole falling object 11 through the television 9; if the imaging effect of the underground television 9 is used for judging that no sundries are washed cleanly on the fallen objects 11 at the bottom of the well, the circulation can be stopped, an operator lifts the cable 2 by controlling a roller in the imaging terminal 1 of the ground cable car until the underground television 9 lifts up the washing pipe column 8, the upper pulley 4 and the ground pulley 3 are disassembled after the underground television 9 is lifted up, the operator operates a lifting system of the derrick 5 to lift up the washing pipe column 8 in the shaft 7, and the washing operation is finished; if the imaging effect of the underground television 9 judges that the sundries on the bottom-hole falling objects 11 are not washed clean, the circulation is continued to the bottom-hole falling objects 11 to wash clean the sundries.
Example eleven:
referring to fig. 5, the present embodiment provides a 3-1/2 inch drill pipe-passing downhole television fishing small-sized junk tool, which comprises a surface cable car imaging terminal 1, a cable 2, a ground pulley 3, a crown pulley 4, a derrick 5, a derrick base 6, a shaft 7, a pipe column 8, a downhole television 9, a fishing tool female cone 12 and a downhole junk 11. The ground pulley 3 is fixed on a derrick base 6 through a steel wire rope; the crown block 4 is fixed on the derrick 5 body through a steel wire rope; the pipe column 8 is lifted out or lowered into the shaft 7 through a lifting system of the derrick 5; the pipe column 8 is a 3-1/2 inch drill rod with an inner diameter of 70 mm; the operation method for observing the fishing effect in real time during fishing operation of the bottom hole junk 11 comprises the following steps: when an operator cannot judge whether the bottom hole junk is fished according to the change of the suspended weight of the lifting system, the operator slowly lowers the cable 2 through controlling an internal roller of the ground cable car imaging terminal 1 to a position above a fishing tool female cone 12 at the bottom of the pipe column 8 through the underground television 9, and constantly observes the fishing effect of the bottom hole junk 11 through the underground television 9; if the fishing of the bottom hole junk 11 is judged to be successful through the imaging effect of the underground television 9, an operator lifts the cable 2 through controlling the drum in the imaging terminal 1 of the ground cable car until the underground television 9 lifts out of the pipe column 8, the top pulley 4 and the ground pulley 3 are disassembled after the underground television 9 is lifted out, the operator operates the lifting system of the derrick 5 to lift out the pipe column 8 and the bottom hole junk 11 in the shaft 7, and the fishing operation is completed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
In the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
The foregoing is illustrative of the preferred embodiments of the present invention, and the present invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (9)
1. A television flushing and fishing small-sized junk tool in a tubular column well at least comprises a derrick (5) and a derrick base (6); the derrick (5) is fixed on the ground of a wellhead through a derrick base (6); the method is characterized in that: the underground cable car is characterized by further comprising a ground cable car imaging terminal (1), a cable (2), a ground pulley (3), a crown block (4), a pipe column (8), an underground television (9) and a washing fishing tool (10); the upper end of the pipe column (8) is connected to the derrick (5), and the lower end of the pipe column (8) is connected with a washing fishing tool (10); the ground pulley (3) is fixedly connected to a derrick base (6) through a rope; the top pulley (4) is fixedly connected to the derrick (5) body through a rope; one end of the cable (2) is connected with the ground cable car imaging terminal (1), the other end of the cable (2) is connected with the underground television (9) through the ground pulley (3) and the top pulley (4) in sequence, and the underground television (9) moves up and down in the pipe column (8) through the cable (2).
2. A tubular string downhole television flushing and fishing tool as claimed in claim 1, wherein: the flushing fishing tool (10) is a fishing tool or a flushing tool; the fishing tool is a fishing female cone (12) or other hollow fishing tools; the flushing tool is a flushing tool inclined tip (13) or other hollow type cleaning tools.
3. A tubular string downhole tv washout and fishing tool as claimed in claim 1 or 2, wherein: the inner diameter of the flushing fishing tool (10) is larger than 60 mm.
4. A tubular string downhole television flushing and fishing tool as claimed in claim 1, wherein: the ground cable car imaging terminal (1) at least comprises a roller, a power supply and a signal receiver; the signal receiver is in electric signal connection with the underground television (9) through a cable (2); the cable (2) is wound on the drum; the power supply is electrically connected with the roller and provides power for the rotation of the roller.
5. A tubular string downhole television flushing and fishing tool as claimed in claim 1, wherein: the underground television (9) comprises a horse-head, a weighting rod, an electronic circuit short section, a centralizer short section and a camera short section; the bridle, the weighting rod, the electronic circuit short section, the centralizer short section and the camera short section are sequentially connected from top to bottom; the camera short section passes through the electronic circuit short section and the bridle and is connected with the ground cable car imaging terminal (1) through a cable (2) in an electric signal mode.
6. A tubular string downhole TV flushing and fishing tool as claimed in claim 5, wherein: an illuminating lamp, a storage battery, a side-looking camera lens and a downward-looking camera lens are arranged in the camera short section; the downward-looking camera lens and the side-looking camera lens are in electrical signal connection with the electronic circuit pup joint; the illuminating lamp is electrically connected with the storage battery.
7. A tubular string downhole TV flushing and fishing tool as claimed in claim 1 or 5, wherein: the maximum outer diameter of the underground television (9) is 54 mm.
8. A tubular string downhole television flushing and fishing tool as claimed in claim 1, wherein: the inner diameter of the pipe column (8) is larger than 62 mm.
9. A method of claim 1 to 8, comprising the steps of
The method comprises the following steps: tool connection
Connecting a television washing and salvaging small-sized junk tool under the tubular column according to the task property; when the operator cannot judge whether the bottom hole falling object is washed clean according to experience and the clean state of the returned flushing fluid, the lower end of the pipe column (8) is connected with a flushing tool inclined tip (13) and then the step II is carried out; if the operator can not judge whether the bottom hole junk is salvaged according to the change of the suspended weight of the lifting system, connecting a fishing tool female cone (12) at the lower end of the pipe column (8) and then entering the third step;
step two: lowering a flushing pipe string (8) into the shaft (7) through a hoisting system of the derrick (5); controlling a roller in an imaging terminal (1) of the ground cable car to slowly lower a cable (2), and observing the washing effect of a bottom falling object (11) through an underground television (9) when the underground television (9) descends to a washing tool inclined tip (10) at the bottom of a washing pipe column (8); if the imaging effect of the underground television (9) is used for judging that no sundries are washed cleanly on the falling object (11) at the bottom of the well, the circulation is stopped, the cable (2) is lifted up by a roller in the imaging terminal (1) of the ground cable car until the underground television (9) is lifted out of the washing pipe column (8), after the underground television (9) is lifted out, the crown block (5) and the ground block (3) are disassembled, the lifting system of the derrick (5) is operated to lift out the washing pipe column (8) in the shaft (7), and the washing operation is finished; if the imaging effect of the underground television (9) judges that the sundries on the bottom-hole falling objects (11) are not washed clean, the circulation is continued to the bottom-hole falling objects (11) to wash clean the sundries.
Step three: lowering a pipe string (8) into the shaft (7) through a hoisting system of the derrick (5); the cable (2) is slowly lowered by controlling a roller in the ground cable car imaging terminal (1), and when the underground television (9) is above the fishing tool female cone (10) at the bottom of the pipe column (8), the fishing effect of the bottom hole junk (11) is observed by the underground television (9) at any time; if the underground falling object (11) is judged to be successfully fished through the imaging effect of the underground television (9), the cable (2) is lifted up through controlling an inner roller of the ground cable car imaging terminal (1) until the underground television (9) lifts up the pipe column (8), after the underground television (9) is lifted up, the crown block (5) and the ground block (3) are disassembled, a lifting system of the derrick (5) is operated to lift up the pipe column (8) and the underground falling object (11) in the shaft (7), and the fishing operation is completed.
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| CN202010535065.1A CN111622703B (en) | 2020-06-12 | 2020-06-12 | Small-sized falling object flushing and salvaging tool and method for underground television passing through tubular column |
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| CN202010535065.1A CN111622703B (en) | 2020-06-12 | 2020-06-12 | Small-sized falling object flushing and salvaging tool and method for underground television passing through tubular column |
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| US20220268120A1 (en) * | 2021-02-25 | 2022-08-25 | Saudi Arabian Oil Company | Fishing scanning tool |
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| CN111622703B (en) | 2024-06-18 |
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