CN112065326A - Downhole operation tool and method for petroleum industry - Google Patents
Downhole operation tool and method for petroleum industry Download PDFInfo
- Publication number
- CN112065326A CN112065326A CN202010958960.4A CN202010958960A CN112065326A CN 112065326 A CN112065326 A CN 112065326A CN 202010958960 A CN202010958960 A CN 202010958960A CN 112065326 A CN112065326 A CN 112065326A
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- oil drainage
- pipe column
- wall
- ball seat
- oil
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- 239000003208 petroleum Substances 0.000 title claims description 7
- 238000000034 method Methods 0.000 title description 9
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 claims abstract description 42
- 210000002445 nipple Anatomy 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims description 18
- 230000000881 depressing effect Effects 0.000 claims description 12
- 210000000078 claw Anatomy 0.000 claims description 7
- 239000003129 oil well Substances 0.000 abstract description 10
- 238000000605 extraction Methods 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 235000019198 oils Nutrition 0.000 description 97
- 238000011084 recovery Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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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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- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Float Valves (AREA)
Abstract
The invention relates to a packer safe running and anti-pollution salvaging dual-purpose device for layered oil extraction. The technical scheme is as follows: the bottom of the outer wall of the pipe column connecting nipple is connected with an oil drainage carrier, the top of the outer wall of the pipe column connecting nipple is connected with a lower pressure device baffle ring, and a falling object lower pressure device is sleeved on the outer side of the pipe column connecting nipple; the anti-pollution salvage seat that booster sleeve, safe supporting spring, pressure release ball seat are constituteed is installed to the inner chamber of tubular column coupling nipple joint, and the lower part of pressure release ball seat is equipped with down the draining main part, and the draining main part is equipped with feed liquor hole and goes out the liquid hole under, realizes draining through the centre bore cooperation of draining the oil main part and draining carrier bottom down. The beneficial effects are that: when the oil production pipe is put into the well, suspended matters such as rubber and the like in the oil well casing are pressed to the bottom of the oil production pipe through a falling object depressor; when the oil production pipe is lifted out of the wellhead, the liquid in the oil production pipe is released and discharged underground through the matching of the pressure relief ball seat and the sealing steel ball, so that the pollution problem of the wellhead ground is avoided.
Description
Technical Field
The invention relates to a downhole operation tool and a downhole operation method in the petroleum industry.
Background
In the process of oil production, the layered oil recovery is a method which is mature and effective day by day, but the length of a layered pipe column for the layered oil recovery is 300-16000 meters, and because the layered oil recovery is adopted, more packers need to be put in. When there is the junk in the oil well in the construction, some can suspend in upper-middle part of the liquid level, like this, when going into the packer, trigger the midway setting of fluid pressure type packer easily, form the maloperation, can increase the operating cost like this, and prolonged construction cycle simultaneously, serious can cause overhaul sometimes, cause bigger economic loss. However, through long-time research, the falling objects which affect the running of the tool exist in different forms, but the falling objects which affect the running of the string mainly comprise block-shaped suspended matters, most of which are rubber, so that the falling objects can be pressed downwards by a method of pressing down a falling object pressing device, and the falling objects are temporarily pressed into the lower part of the layered oil production string, so that the influence of the falling objects on the layered oil production operation is temporarily solved, and the midway setting of a hydraulic packer in the layered oil production string is avoided.
In addition, in the prior art, when the layered oil production pipe column is lifted and dismantled on a well head, a problem is encountered, and because the pipe column is long and an oil drainage device is not arranged in the prior art, a large amount of liquid (namely oil-water mixture) exists in the oil production pipe column, and when the liquid is dismantled at the well head, the liquid can be leaked down and splashed around, so that the liquid is not only sprayed onto the body of an oil worker, but also pollutes the ground along the well head to cause environmental pollution, and in addition, the meaningless waste of oil resources is also caused.
Disclosure of Invention
The invention aims to provide a downhole operation tool and a downhole operation method in the petroleum industry aiming at the defects in the prior art, wherein when a production string is put into a well, suspended matters such as rubber and the like in a casing of the oil well are pressed down to the bottom of the production string through a falling object depressor; when the oil production pipe is lifted out of the wellhead, the liquid in the oil production pipe is released and discharged underground through the matching of the pressure relief ball seat and the sealing steel ball, so that the pollution problem of the wellhead ground is avoided.
The invention provides a packer safe running and anti-pollution salvaging dual-purpose device for layered oil extraction, which adopts the technical scheme that: comprises a falling object depressor (5), an oil drainage carrier (6), a pipe column connecting short joint (7), a depressor baffle ring (8), a sealing rubber ring (9), a pressure increasing sleeve (10), a safety supporting spring (11) and a pressure relief ball seat (12),
the bottom of the outer wall of the pipe column connecting nipple (7) is connected with an oil drainage carrier (6), the top of the outer wall of the pipe column connecting nipple (7) is connected with a press retainer ring (8), a falling object pressing device (5) is sleeved on the outer side of the pipe column connecting nipple (7), the lower side of the falling object pressing device (5) is a pressing fence, the top of the falling object pressing device is provided with a necking joint, and the necking joint is arranged between the press retainer ring (8) on the outer wall of the pipe column connecting nipple (7) and the oil drainage carrier (6), so that the falling object pressing device (5) can move up and down between the limit distances between the press retainer ring (8) and the oil drainage carrier (6);
an anti-pollution salvaging seat consisting of a pressurization sleeve (10), a safe supporting spring (11) and a pressure relief ball seat (12) is arranged in the inner cavity of the pipe column connecting nipple (7), the pressurization sleeve (10) is arranged on the upper side of the inner wall of the pipe column connecting nipple (7), the outer wall of the pressure relief ball seat (12) is matched with the inner wall of the pressurization sleeve (10), and the safe supporting spring (11) is arranged between the pressure relief ball seat (12) and the oil drainage carrier (6); the lower part of pressure release ball seat (12) is equipped with down the draining main part, and the draining main part is equipped with feed liquor hole (18) and play liquid hole (19) down, realizes draining through the centre bore cooperation of draining main part and draining carrier (6) bottom down.
Preferably, the dropping object fishing rod (3) is fixed at the bottom of the oil drainage carrier (6), the guide shoes (2) are arranged at the bottom of the dropping object fishing rod (3), and a plurality of dropping object hooking devices (4) are arranged on the outer wall of the dropping object fishing rod (3).
Preferably, foretell pressure release ball seat (12) include supporter (12.1), outer protrusion (12.2), leak oily main part (12.3) down, blind stifled (12.4), cross liquid passageway (12.5), well seal groove (12.6), go up seal groove (12.7), go up supporter (12.1), outer protrusion (12.2), leak oily main part (12.3) down and constitute overall structure, just the inner wall of going up supporter (12.1) is the toper structure, and the external diameter of outer protrusion (12.2) is greater than the external diameter of supporter (12.1), and the bulge that outer protrusion (12.2) formed and the recess cooperation of the inner wall of pressure boost cover (10), is equipped with feed liquor hole (18) and play liquid hole (19) on draining main part (12.3) down, feed liquor hole (18) and play liquid hole (19) horizontal setting respectively, and with cross liquid passageway (12.5) and communicate.
Preferably, the inner wall of the conical structure of the upper support body (12.1) is matched with the sealing steel ball (17), the sealing steel ball (17) is thrown into the oil production string from a wellhead, and can seat the upper support body (12.1) of the pressure relief ball seat (12), so that the lower oil drainage main body of the pressure relief ball seat (12) moves downwards along the central hole at the bottom of the oil drainage carrier (6) and extrudes the safety support spring (11), the liquid inlet hole (18) is positioned in the inner cavity of the oil drainage carrier (6), the liquid outlet hole (19) is positioned at the outer side of the bottom of the oil drainage carrier (6), and liquid in the pipe column connecting nipple (7) and the oil production string is smoothly discharged.
Preferably, the outer wall of the oil drainage main body (12.3) of the pressure drainage ball seat (12) is provided with a limiting boss (12.8), and the limiting boss (12.8) is positioned between the liquid inlet hole (18) and the liquid outlet hole (19).
Preferably, the falling object depressor (5) comprises a necking connector (5.1), a depressor main body (5.2), a depressing fence (5.3), a gap (5.4) and an outward extending claw (5.5), the necking connector (5.1) is arranged at the top of the depressor main body (5.2), the lower part of the depressor main body (5.2) is connected with the depressing fence (5.3), the outward extending claw (5.5) is arranged at the bottom of the depressing fence (5.3), and the gap (5.4) is arranged in the depressing fence (5.3).
Preferably, the push-down fence (5.3) is in a bell mouth shape.
The invention has the beneficial effects that: the anti-pollution fishing device is provided with a falling object depressor and an anti-pollution fishing device, wherein a downward pressing fence is arranged on the lower side of the falling object depressor, and a necking joint is arranged at the top of the falling object depressor, so that the falling object depressor can move up and down between a spacing distance between a blocking ring of the downward pressing device and an oil drainage carrier, and suspended matters such as rubber and the like in an oil well casing are pressed down to the bottom of an oil production pipe column through the falling object depressor when the oil production pipe column is lowered into a well;
when the layered oil production pipe column is lifted out of a well mouth, the oil drainage carrier can move upwards through the up-and-down movable gap of the falling object depressor, and the suspended falling objects carried by the falling object fishing rod and the falling object hooking device at the lower part are driven to be extruded into the inner cavity of the depressor body of the falling object depressor, so that the oil drainage carrier is lifted out of the well mouth, the layered oil production pipe column is lifted up once, a part of the falling objects are carried out, and the falling objects in the oil well casing are reduced; in addition, when the layered oil production pipe column is lifted to a position close to a well mouth, the sealing steel ball is put in from the well mouth, the sealing steel ball falls into the upper supporting body of the pressure relief ball seat, the pressure relief ball seat is integrally moved downwards under the action of the gravity of the sealing steel ball, the oil drainage main body penetrates through the central hole in the bottom of the oil drainage carrier to form a state that the liquid inlet hole is positioned in the inner cavity of the oil drainage carrier, and the liquid outlet hole is positioned in the outer side of the bottom of the oil drainage carrier.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the drop depressor;
FIG. 3 is a structure diagram of the sealing steel ball and the pressure relief ball seat;
FIG. 4 is a schematic structural view of the pressure relief ball seat and the oil drainage carrier during oil drainage;
FIG. 5 is a schematic diagram of the downhole configuration of the present invention;
FIG. 6 is a schematic view of a second embodiment of a pressure relief ball seat;
in the upper diagram: the device comprises an oil well casing 1, a guide shoe 2, a junk fishing rod 3, a junk hooking device 4, a junk pushing device 5, an oil drainage carrier 6, a pipe column connecting short section 7, a pushing device baffle ring 8, a sealing rubber ring 9, a pressurizing sleeve 10, a safe supporting spring 11, a pressure relief ball seat 12, a coupling 13, a signal switch 14, a hydraulic switch 15, a hydraulic packer 16, a sealing steel ball 17, a liquid inlet hole 18, a liquid outlet hole 19, a layered oil production pipe column 20 and a dual-purpose device A for safely pushing a packer for layered oil production and fishing in an anti-pollution manner;
the necking joint 5.1, the depressor main body 5.2, the downward pressing fence 5.3, the clearance gap 5.4 and the outward extending claw 5.5; the oil drain structure comprises an upper support body 12.1, an outer bulge 12.2, a lower oil drain main body 12.3, a blind plug 12.4, a liquid passing channel 12.5, a middle sealing groove 12.6, an upper sealing groove 12.7 and a limiting boss 12.8.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
the bottom of the outer wall of the pipe column connecting nipple 7 is connected with an oil drainage carrier 6, the top of the outer wall of the pipe column connecting nipple 7 is connected with a lower pressure device retaining ring 8, a falling object lower pressure device 5 is sleeved outside the pipe column connecting nipple 7, the lower side of the falling object lower pressure device 5 is a downward pressing fence, the top of the falling object lower pressure device is provided with a necking down connector, and the necking down connector is arranged between the lower pressure device retaining ring 8 on the outer wall of the pipe column connecting nipple 7 and the oil drainage carrier 6, so that the falling object lower pressure device 5 can move up and down between the limiting distance between the lower pressure device retaining ring 8 and the oil drainage carrier 6;
an anti-pollution salvaging seat consisting of a pressure increasing sleeve 10, a safety supporting spring 11 and a pressure releasing ball seat 12 is arranged in the inner cavity of the pipe column connecting short section 7, the pressure increasing sleeve 10 is arranged on the upper side of the inner wall of the pipe column connecting short section 7, the outer wall of the pressure releasing ball seat 12 is matched with the inner wall of the pressure increasing sleeve 10, and the safety supporting spring 11 is arranged between the pressure releasing ball seat 12 and the oil drainage carrier 6; the lower part of the pressure relief ball seat 12 is provided with a lower oil drainage main body, the lower oil drainage main body is provided with a liquid inlet hole 18 and a liquid outlet hole 19, and oil drainage is realized through the cooperation of the lower oil drainage main body and a central hole at the bottom of the oil drainage carrier 6.
Preferably, the dropping object fishing rod 3 is fixed at the bottom of the oil drainage carrier 6, the guide shoe 2 is arranged at the bottom of the dropping object fishing rod 3, and the plurality of dropping object hooking devices 4 are arranged on the outer wall of the dropping object fishing rod 3.
Referring to the attached drawing 3, the pressure relief ball seat 12 of the present invention includes an upper support 12.1, an outer protrusion 12.2, a lower oil drainage main body 12.3, a blind plug 12.4, a liquid passing channel 12.5, a middle seal groove 12.6, and an upper seal groove 12.7, wherein the upper support 12.1, the outer protrusion 12.2, and the lower oil drainage main body 12.3 form an integral structure, an inner wall of the upper support 12.1 is a tapered structure, an outer diameter of the outer protrusion 12.2 is greater than an outer diameter of the upper support 12.1, a protrusion formed by the outer protrusion 12.2 is matched with a groove of an inner wall of the pressure increasing sleeve 10, a liquid inlet 18 and a liquid outlet 19 are disposed on the lower oil drainage main body 12.3, and the liquid inlet 18 and the liquid outlet 19 are horizontally disposed and communicated with the liquid passing channel 12.5.
Referring to the attached figure 4, the inner wall of the conical structure of the upper support 12.1 of the invention can be matched with the sealing steel ball 17, and the sealing steel ball 17 is thrown into the layered oil production pipe column from a well head and can seat the upper support 12.1 of the pressure relief ball seat 12, so that the lower oil drainage main body of the pressure relief ball seat 12 moves downwards along the central hole at the bottom of the oil drainage carrier 6 and extrudes the safety support spring 11, the liquid inlet hole 18 is positioned in the inner cavity of the oil drainage carrier 6, and the liquid outlet hole 19 is positioned at the outer side of the bottom of the oil drainage carrier 6, so that the liquid in the pipe column connecting nipple 7 and the oil production pipe column can be smoothly discharged.
Referring to fig. 2, the falling object depressor 5 of the present invention comprises a necking joint 5.1, a depressor main body 5.2, a depressing fence 5.3, a gap 5.4 and an extending claw 5.5, wherein the top of the depressor main body 5.2 is provided with the necking joint 5.1, the lower part of the depressor main body 5.2 is connected with the depressing fence 5.3, the bottom of the depressing fence 5.3 is provided with the extending claw 5.5, and the gap 5.4 is arranged in the depressing fence 5.3, so as to play a role of filtering.
Preferably, the hold-down fence 5.3 is flared so that it is in direct contact with the inner wall of the well casing, so that the suspended debris can be forced into the lower liquid portion without affecting the operation of the stratified production string.
In addition, referring to fig. 5, the layered oil production string 20 of the present invention needs to be connected with a coupling 13, a signal switch 14, a hydraulic switch 15, a hydraulic packer 16, a dual-purpose device for safely setting down and anti-pollution fishing a packer for layered oil production a, etc. to be set into a casing of an oil well to perform operations of layered oil production, and the signal switch 14, the hydraulic switch 15, the hydraulic packer 16, etc. belong to the conventional technology and are not described again.
The invention provides a packer safe running and anti-pollution salvaging dual-purpose device for layered oil extraction, which comprises the following steps in the using process:
(1) the packer safe running and anti-pollution salvaging dual-purpose device A for assembling layered oil extraction comprises a falling object descending press device 5, an oil drainage carrier 6, a pipe column connecting nipple 7, a descending press device baffle ring 8, a sealing rubber ring 9, a pressurizing sleeve 10, a safe supporting spring 11 and a pressure relief ball seat 12, wherein the outer wall of the pipe column connecting nipple 7 is in threaded connection with the descending press device baffle ring 8, the falling object descending press device 5 is sleeved on the outer wall of the pipe column connecting nipple 7 from bottom to top, and then the oil drainage carrier 6 with a falling object fishing rod 3 welded at the bottom is in threaded connection with the lower end of the pipe column connecting nipple 7; then, combining the pressure increasing sleeve 10 and the pressure relief ball seat 12 together, installing a safety supporting spring 11 at the lower part of the pressure relief ball seat 12, and connecting the pressure increasing sleeve 10 and the pressure relief ball seat 12 integrally to the inner wall of the pipe column connecting nipple 7 through threads;
(2) when the packer is put into a well, the packer safe-putting and anti-pollution salvaging dual-purpose device A for layered oil extraction is connected to the bottom of the layered oil extraction pipe column 20, and through the tight fit of the falling object depressor 5 and the inner wall of the oil well casing 1, a gap seam 5.4 is milled on the downward pressing fence 5.3 to play a role in filtering, so that the falling objects suspended in the oil well casing 1 are pressed into the liquid, and the hydraulic packer 16 on the layered oil extraction pipe column 20 is prevented from being blocked and sealed;
(3) when the oil well production is finished and the well repair is needed, a part of suspended falling objects under liquid is hung on the falling object hooking device 4 on the falling object fishing rod 3, so that when the layered oil production string 20 is lifted up, the falling object depressor 5 can move up and down between the retainer ring 8 of the depressor and the oil drainage carrier 6 because the necking joint 5.1 at the top of the falling object depressor 5 is positioned between the retainer ring 8 of the depressor and the oil drainage carrier 6, and the falling objects on the falling object fishing rod 3 are driven by the lifted layered oil production string 20 to be collected between the falling object fishing rod 3 and the depressor main body 5.2 of the falling object depressor 5, so that the falling objects are continuously lifted up to the ground well mouth;
when the layered oil production pipe column 20 is close to a wellhead on the ground, a sealing steel ball 17 is put into the layered oil production pipe column 20, the sealing steel ball 17 falls into a pressure relief ball seat 12 along the inner cavity of the layered oil production pipe column 20, when the sealing steel ball 17 and an upper support body 12.1 of the pressure relief ball seat 12 form spherical sealing, at this time, the balance of the pressure relief ball seat 12, a pressure increasing sleeve 10 and a safety support spring 11 is broken, the pressure relief ball seat 12 integrally moves downwards under the action of the gravity of the sealing steel ball 17, a lower oil drainage main body 12.3 penetrates through a central hole in the bottom of an oil drainage carrier 6 to form a state that a liquid inlet 18 is positioned in the inner cavity of the oil drainage carrier 6, and a liquid outlet 19 is positioned on the outer side of the bottom of the oil drainage carrier 6, so that liquid in the pipe column connecting nipple 7 and the oil production pipe column is smoothly discharged into; after the liquid is discharged, the layered oil production pipe column 20 and the packer for layered oil production are safely lowered and the anti-pollution salvaging dual-purpose device A are all lifted to the ground wellhead.
Specific methods of use with reference to example 1, it is noted that: the position of the liquid inlet hole 18 and the position of the liquid outlet hole 19 can be ensured by the limiting lug boss 12.8, so that the liquid inlet hole 18 is positioned in the inner cavity of the oil drainage carrier 6, and the liquid outlet hole 19 is positioned at the outer side of the bottom of the oil drainage carrier 6, so that liquid in the pipe column connecting short section 7 and the oil production pipe column can be smoothly discharged.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (3)
1. A downhole operation tool for petroleum industry is characterized in that: comprises a falling object depressor (5), an oil drainage carrier (6), a pipe column connecting short joint (7), a depressor baffle ring (8), a sealing rubber ring (9), a pressure increasing sleeve (10), a safety supporting spring (11) and a pressure relief ball seat (12),
the bottom of the outer wall of the pipe column connecting nipple (7) is connected with an oil drainage carrier (6), the top of the outer wall of the pipe column connecting nipple (7) is connected with a press retainer ring (8), a falling object pressing device (5) is sleeved on the outer side of the pipe column connecting nipple (7), the lower side of the falling object pressing device (5) is a pressing fence, the top of the falling object pressing device is provided with a necking joint, and the necking joint is arranged between the press retainer ring (8) on the outer wall of the pipe column connecting nipple (7) and the oil drainage carrier (6), so that the falling object pressing device (5) can move up and down between the limit distances between the press retainer ring (8) and the oil drainage carrier (6);
an anti-pollution salvaging seat consisting of a pressurization sleeve (10), a safe supporting spring (11) and a pressure relief ball seat (12) is arranged in the inner cavity of the pipe column connecting nipple (7), the pressurization sleeve (10) is arranged on the upper side of the inner wall of the pipe column connecting nipple (7), the outer wall of the pressure relief ball seat (12) is matched with the inner wall of the pressurization sleeve (10), and the safe supporting spring (11) is arranged between the pressure relief ball seat (12) and the oil drainage carrier (6); a lower oil drainage main body is arranged at the lower part of the pressure relief ball seat (12), a liquid inlet hole (18) and a liquid outlet hole (19) are formed in the lower oil drainage main body, and oil drainage is realized through the matching of the lower oil drainage main body and a central hole at the bottom of the oil drainage carrier (6);
a junk fishing rod (3) is fixed at the bottom of the oil drainage carrier (6), guide shoes (2) are arranged at the bottom of the junk fishing rod (3), and a plurality of junk hooking devices (4) are arranged on the outer wall of the junk fishing rod (3);
the pressure relief ball seat (12) comprises an upper support body (12.1), an outer bulge (12.2), a lower oil drainage main body (12.3), a blind plug (12.4), a liquid passing channel (12.5), a middle sealing groove (12.6) and an upper sealing groove (12.7), wherein the upper support body (12.1), the outer bulge (12.2) and the lower oil drainage main body (12.3) form an integral structure, the inner wall of the upper support body (12.1) is of a conical structure, the outer diameter of the outer bulge (12.2) is larger than that of the upper support body (12.1), a bulge part formed by the outer bulge (12.2) is matched with a groove of the inner wall of the pressurization sleeve (10), a liquid inlet hole (18) and a liquid outlet hole (19) are formed in the lower oil drainage main body (12.3), and the liquid inlet hole (18) and the liquid outlet hole (19) are respectively horizontally arranged and communicated with the liquid passing channel (12.5);
the inner wall of the conical structure of the upper support body (12.1) is matched with the sealing steel ball (17), and the sealing steel ball (17) is thrown into the oil production pipe column from a wellhead and can seat and seal the upper support body (12.1) of the pressure relief ball seat (12), so that the lower oil drainage main body of the pressure relief ball seat (12) moves downwards along the central hole at the bottom of the oil drainage carrier (6) and extrudes the safety support spring (11), the liquid inlet hole (18) is positioned in the inner cavity of the oil drainage carrier (6), the liquid outlet hole (19) is positioned at the outer side of the bottom of the oil drainage carrier (6), and liquid in the pipe column connecting nipple (7) and the oil production pipe column is smoothly discharged;
the outer wall of the lower oil drainage main body (12.3) of the pressure drainage ball seat (12) is provided with a limiting boss (12.8), and the limiting boss (12.8) is positioned between the liquid inlet hole (18) and the liquid outlet hole (19).
2. The petroleum industry downhole tool of claim 1, wherein: the falling object depressor (5) comprises a necking connector (5.1), a depressor main body (5.2), a depressing fence (5.3), a gap (5.4) and an outward extending claw (5.5), wherein the necking connector (5.1) is arranged at the top of the depressor main body (5.2), the lower part of the depressor main body (5.2) is connected with the depressing fence (5.3), the outward extending claw (5.5) is arranged at the bottom of the depressing fence (5.3), and the gap (5.4) is arranged in the depressing fence (5.3).
3. The petroleum industry downhole tool of claim 2, wherein: the pressing fence (5.3) is in a bell mouth shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010958960.4A CN112065326B (en) | 2018-09-20 | 2018-09-20 | Downhole operation tool and method for petroleum industry |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097068.0A CN109267954B (en) | 2018-09-20 | 2018-09-20 | Packer safety running and anti-pollution salvaging dual-purpose device for layered oil extraction |
| CN202010958960.4A CN112065326B (en) | 2018-09-20 | 2018-09-20 | Downhole operation tool and method for petroleum industry |
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|---|---|---|---|---|
| CN115704316A (en) * | 2021-08-12 | 2023-02-17 | 中国石油化工股份有限公司 | Throwing rod type pipe inspection device and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114251058B (en) * | 2021-12-17 | 2023-08-25 | 盐城市东荣石油机械有限公司 | Layered oil production pipe column |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112065326B (en) | 2022-08-26 |
| CN109267954B (en) | 2020-11-06 |
| CN109267954A (en) | 2019-01-25 |
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