CN106761540B - Random position bidirectional setting bridge plug - Google Patents
Random position bidirectional setting bridge plug Download PDFInfo
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- CN106761540B CN106761540B CN201710005215.6A CN201710005215A CN106761540B CN 106761540 B CN106761540 B CN 106761540B CN 201710005215 A CN201710005215 A CN 201710005215A CN 106761540 B CN106761540 B CN 106761540B
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- jaw
- external thread
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 210000000078 claw Anatomy 0.000 claims description 62
- 238000001914 filtration Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000003129 oil well Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
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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)
- Earth Drilling (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a bidirectional setting bridge plug at any position, which is designed for the pressurized operation of an oil well and a gas well, the cable plugging device breaks through the complexity of plugging the cable in the past, greatly reduces the expenditure of manpower, material resources and financial resources, and has the advantages of simple operation, safety, reliability, good sealing property and easy salvage.
Description
Technical Field
The invention relates to the technical field of petrochemical engineering, in particular to an arbitrary position bidirectional setting bridge plug.
Background
In the past, the oil well and the gas well are mostly blocked by adopting a cable bridge plug during the oil pipe pressure control construction, and the cable bridge plug has a plurality of defects due to the adoption: firstly, using an initiating explosive device, wherein the use time of the initiating explosive device is restricted by a policy; the cable is used for construction, so that the construction is complicated in sealing and lowering and is not easy to operate; and thirdly, the cable bridge plug used at present can not be fished, and after plugging is successful, no production channel is caused when the lifting pipe column is not lifted when being clamped, so that the loss is huge.
Disclosure of Invention
The invention aims to provide a bidirectional setting bridge plug at any position, which is designed for the pressurized operation of oil wells and gas wells, breaks the complexity of the conventional cable plugging, greatly reduces the manpower, material resources and financial expenditure, and is simple, safe and reliable to operate, good in sealing property and easy to salvage.
In order to achieve the above object, the present invention provides an arbitrary position bidirectional setting bridge plug, comprising:
the device comprises an upper throwing outer cylinder, wherein a necking down is arranged at the left end of the upper throwing outer cylinder, an external thread is formed on the periphery of the necking down, and an internal thread is formed at the right end of the throwing outer cylinder;
the throwing nut is coaxial with the throwing outer cylinder and is positioned in the throwing outer cylinder;
the left end of the dragging cylinder is provided with an external thread connected with the internal thread at the right end of the throwing outer cylinder, and the inner side of the right part of the dragging cylinder is provided with an annular groove;
a first spring;
the left end of each spring clamping jaw is provided with an internal thread, the right end of each spring clamping jaw is formed into a coaxial claw shape, and the right end of each supporting jaw is provided with a convex block;
an inner rod of the throwing cylinder, the left end of which is provided with an internal thread connected with the throwing nut, the right end of the spring clamping jaw is provided with an external thread and an internal thread, and the external thread is used for connecting the internal thread of the upper spring clamping jaw; the first spring is arranged on the periphery of the inner rod of the throwing cylinder and inside the throwing outer cylinder, and can be compressed by the right end of the throwing nut and the left end of the dragging cylinder;
fishing a nut;
the upper jaw limiting rod is hollow and is positioned in the dragging cylinder, the left end of the upper jaw limiting rod is provided with an external thread connected with the fishing nut, the right part of the upper jaw limiting rod is provided with an annular groove, and the right end of the upper jaw limiting rod is provided with an outer ring;
the throwing cylinder inner core is positioned inside the upper jaw limiting rod, the left end of the throwing cylinder inner core is provided with an external thread connected with the internal thread of the throwing cylinder inner core, and the right end of the throwing cylinder inner core is formed into a tip end;
the upper clamping jaw axial limiting part is positioned on the periphery of the upper clamping jaw limiting rod and inside the dragging barrel, and an annular groove is formed at the left end of the upper clamping jaw axial limiting part and used for fixing a lug at the right end of the upper spring clamping jaw supporting jaw between the upper clamping jaw limiting rod and the dragging barrel; the middle part is provided with a side wall round hole, three chutes which are axially arranged and connected with each other and a side wall strip-shaped opening, and the right end is provided with a necking down and an external thread on the periphery of the necking down;
the small cylinder is inserted into a side wall round hole of the upper jaw axial limiting piece;
the upper clamping jaw is inserted into three axially arranged and connected inclined grooves and side wall strip-shaped openings of the upper clamping jaw axial limiting piece from left to right and abuts against the right end of the dragging cylinder;
the left end of the first outer cylinder is provided with an internal thread connected with an external thread on the periphery of the necking of the axial limiting part of the upper jaw, the right side of the first outer cylinder is provided with an external thread, and the side surface of the first outer cylinder is provided with a square opening;
a second spring located at an outer periphery of the first outer cylinder;
the first fixture block is sleeved outside the upper jaw axial limiting piece, and the second spring is arranged between the upper jaw and the first fixture block;
the second fixture block sleeve is positioned on the peripheries of the first outer cylinder and the second spring;
the first clamping block is positioned in the square opening of the first outer barrel;
the left end of the second outer barrel is provided with an internal thread connected with the external thread at the right end of the first outer barrel, and the right end of the second outer barrel is provided with an opening;
the lower claw spring is positioned on the inner side of the second outer cylinder, the periphery of the inner core of the throwing cylinder is formed into a coaxial claw shape on the left, a lug is formed on the left end of each supporting claw, each supporting claw is clamped on the rightmost end of the upper claw limiting rod and props against the outer ring of the right end of the upper claw limiting rod, and internal threads are arranged on the right end of each supporting claw;
the lower claw radial limiting part is positioned on the outer side of the inner core of the throwing barrel, the left end of the lower claw radial limiting part is provided with an external thread connected with the internal thread at the right end of the lower claw spring, and the right end of the lower claw radial limiting part is provided with an internal thread;
the lower jaw mounting piece is positioned at the right end and provided with a necking positioned at the inner side of the second outer cylinder, and the left end is provided with a strip-shaped opening;
the rubber radial limiting part is positioned outside the inner core of the feeding barrel and inside the lower jaw mounting part, the left end of the rubber radial limiting part is provided with an external thread connected with the internal thread at the right end of the lower jaw radial limiting part, the middle part of the rubber radial limiting part is formed into an external thread, the right side of the external thread is provided with an annular groove with intervals, a limiting hole is arranged inside the right side of the annular groove, and an internal thread is arranged inside the right side of the limiting hole;
the machine rice is positioned in an opening at the right end of the second outer cylinder;
the upper claw sliding groove piece and the lower claw sliding groove piece are positioned on the periphery of the rubber radial limiting piece, and a chute connected with the strip-shaped opening at the left end of the lower claw mounting piece is formed at the joint of the upper claw sliding groove piece and the lower claw mounting piece;
the lower clamping jaw sequentially enters the chute of the upper and lower clamping jaw sliding groove piece and the strip-shaped opening at the left end of the lower clamping jaw mounting piece from right to left;
the first rubber ring is positioned on the periphery of the rubber radial limiting piece, positioned on the right side of the upper and lower claw sliding groove pieces and arranged at intervals with the upper and lower claw sliding groove pieces;
the first rubber ring axial limiting sleeve is tightly attached to the right side of the first rubber ring and is positioned on the periphery of the rubber radial limiting piece;
the second rubber ring is tightly attached to the right side of the axial limiting sleeve of the first rubber ring and is positioned on the periphery of the radial rubber limiting piece;
the second rubber ring axial limiting sleeve is tightly attached to the right side of the second rubber ring and is positioned on the periphery of the rubber radial limiting piece;
the third rubber ring is tightly attached to the right side of the second rubber ring axial limiting sleeve and is positioned on the periphery of the rubber radial limiting piece;
the first rubber axial limiting sleeve is tightly attached to the right side of the third rubber ring and is positioned on the periphery of the rubber radial limiting piece, and an annular groove is formed in the right side;
the straight ruler nut is positioned in the annular groove on the right side of the first rubber axial limiting sleeve and connected with the external thread in the middle of the rubber radial limiting piece;
the second rubber axial limiting sleeve is positioned on the right side of the first rubber axial limiting sleeve, and an annular groove is formed in the right side of the second rubber axial limiting sleeve;
the outer sealing sleeve is positioned on the right side of the first rubber axial limiting sleeve, a groove is formed in the inner side of the left part, and an inner ring is arranged on the inner side of the right side;
the inner sealing sleeve is positioned on the inner sides of the outer sealing sleeve and the first rubber axial limiting sleeve;
the second fixture block is positioned on the inner side of the outer sleeve and in a limiting hole of the rubber radial limiting piece;
the left end of the lower spring shaft is provided with a necking down and an external thread positioned on the periphery of the necking down, the external thread is connected with an internal thread arranged inside the right side of a limiting hole of the rubber radial limiting piece, the right side of the lower spring shaft is provided with an external thread, and the right side of the external thread is provided with the necking down;
the pre-tightening spring is positioned on the periphery of the lower spring shaft, and the left end of the pre-tightening spring abuts against the right end of the outer sealing sleeve;
the left end of the outer hexagonal connecting piece is abutted against the pre-tightening spring, an inner thread connected with an outer thread arranged on the right side of the lower spring shaft is formed on the inner side of the left part, a necking down is arranged on the right side, and an outer thread is arranged on the outer side of the necking down;
the left part of the plunger is plugged into the necking of the outer hexagonal connecting piece from right to left, and the right part of the plunger is clamped on the right side of the necking;
and the left end of the screen drum is provided with an internal thread connected with the external thread of the necking of the outer hexagonal connecting piece, and the side wall of the screen drum is provided with a strip-shaped opening.
Optionally, the upper jaw and the lower jaw are made of stainless steel.
Optionally, a filtering inner net is arranged in the screen drum and is located on the inner side of the strip-shaped opening of the screen drum.
Optionally, the bridge plug further comprises a lower throwing outer cylinder, and the lower throwing outer cylinder is sleeved on the periphery of the right part of the screen cylinder.
Optionally, the tip of the right end of the inner core of the throwing barrel is fixed in the rubber radial limiting piece through a clamping block.
The invention has the following advantages:
the bridge plug effectively solves the technical problem of site construction, and can be set to be anti-up-flee and anti-down-flee according to construction requirements because of flexible and changeable structure; a two-way anti-fleeing structure. During construction, the steel wire is used for conveying and fishing. When fishing out is failed, the tail pipe can be opened to form a production channel.
Drawings
FIG. 1A is a schematic overall structure of one embodiment of a bridge plug of the present invention.
Fig. 2A-7A are schematic partial structural views of one embodiment of a bridge plug of the present invention.
FIGS. 1B-5B are schematic partial structural illustrations of one embodiment of a bridge plug of the present invention.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the present invention, unless otherwise specified, "left and right" are both actually used with reference to the left and right in the drawings, the left end in fig. 2A is the rear end of the projection direction, and the right end is the front end of the projection direction. The left and right of the same component are based on the left and right of the central axis.
As shown in fig. 1A-7A, the present invention provides an arbitrary position bidirectional setting bridge plug, comprising:
the device comprises an upper throwing outer cylinder 1, wherein a necking down is arranged at the left end of the upper throwing outer cylinder 1, an external thread is formed on the periphery of the necking down, and an internal thread is formed at the right end of the throwing outer cylinder 1;
the throwing nut 2 is coaxial with the throwing outer cylinder 1 and is positioned inside the throwing outer cylinder 1;
the left end of the dragging cylinder 3 is provided with an external thread connected with the internal thread at the right end of the throwing outer cylinder 1, and the inner side of the right part of the dragging cylinder is provided with an annular groove;
a first spring 4;
the left end of the upper spring claw 5 is provided with internal threads, the right end of the upper spring claw is formed into a coaxial claw shape, and the right end of each supporting claw is provided with a lug;
an inner rod 6 of the throwing cylinder is arranged, the left end of the inner rod is provided with an internal thread connected with the throwing nut 2, the right end of the inner rod is provided with an external thread and an internal thread, and the external thread is used for connecting the internal thread of the upper spring clamping jaw 5; the first spring 4 is arranged on the periphery of the inner rod 6 of the throwing cylinder and inside the throwing outer cylinder 1, and can be compressed by the right end of the throwing nut 2 and the left end of the dragging cylinder 3;
fishing the nut 7;
the upper jaw limiting rod 8 is hollow and is positioned inside the towing cylinder 3, the left end of the upper jaw limiting rod is provided with an external thread connected with the fishing nut 7, the right part of the upper jaw limiting rod is provided with an annular groove, and the right end of the upper jaw limiting rod is provided with an outer ring;
the throwing cylinder inner core 9 is positioned inside the upper jaw limiting rod 8, the left end of the throwing cylinder inner core is provided with an external thread connected with the internal thread of the inner rod 6 of the throwing cylinder, and the right end of the throwing cylinder inner core is formed into a tip end;
the upper jaw axial limiting piece 10 is positioned on the periphery of the upper jaw limiting rod 8 and inside the dragging barrel 3, and an annular groove is formed at the left end of the upper jaw axial limiting piece and used for fixing a lug at the right end of a supporting jaw of the upper spring jaw 5 between the upper jaw limiting rod 8 and the dragging barrel 3; the middle part is provided with a side wall round hole, three chutes and side wall strip-shaped openings which are axially arranged and connected, and the right end is provided with a necking down and external threads on the periphery of the necking down;
the small cylinder 11 is inserted into a circular hole in the side wall of the upper jaw axial limiting piece 10;
the upper clamping jaw 12 is inserted into the three axially arranged and connected inclined grooves and the side wall strip-shaped opening of the upper clamping jaw axial limiting piece 10 from left to right and abuts against the right end of the towing cylinder 3;
a first outer cylinder 13 having a left end formed with an internal thread connected to the external thread of the outer circumference of the neck of the upper jaw axial stopper 10, a right end formed with an external thread, and a side surface formed with a square opening;
a second spring 14 located on the outer periphery of the first outer cylinder 13;
the first fixture block outer sleeve 15 is positioned on the periphery of the upper jaw axial limiting piece 10, and between the second spring 14 and the upper jaw 12;
the second fixture sleeve 16 is positioned on the peripheries of the first outer cylinder 13 and the second spring 14;
the first fixture block 17 is positioned in the square opening of the first outer cylinder 13;
a second outer cylinder 18, the left end of which is provided with an internal thread connected with the external thread at the right end of the first outer cylinder 13, and the right end of which is provided with an opening;
the lower claw spring 19 is positioned on the inner side of the second outer cylinder 18, the left part of the periphery of the inner core 9 of the feeding cylinder is formed into a coaxial claw shape, the left end of each supporting claw is provided with a convex block, each supporting claw is clamped on the rightmost end of the upper claw limiting rod 8 and props against the outer ring of the right end of the upper claw limiting rod, and the right end of each supporting claw is provided with an internal thread;
the lower claw radial limiting piece 20 is positioned outside the throwing barrel inner core 9, the left end of the lower claw radial limiting piece is provided with an external thread connected with the right end internal thread of the lower claw spring 19, and the right end of the lower claw radial limiting piece is provided with an internal thread;
a lower jaw mounting member 21 having a neck at the right end thereof and located inside the second outer tube 18, and a strip-shaped opening at the left end thereof;
the rubber radial limiting part 22 is positioned outside the inner core 9 of the feeding barrel and inside the lower jaw mounting part 21, the left end of the rubber radial limiting part is provided with an external thread connected with the internal thread at the right end of the lower jaw radial limiting part 20, the middle part of the rubber radial limiting part is formed into an external thread, the right side of the external thread is provided with an annular groove at intervals, a limiting hole is arranged inside the right side of the annular groove, and an internal thread is arranged inside the right side of the limiting hole;
a machine rice 23 positioned in the right end opening of the second outer cylinder 18;
the upper and lower jaw sliding groove members 25 are positioned on the periphery of the rubber radial limiting member 22, and a chute connected with the strip-shaped opening at the left end of the lower jaw mounting member 21 is formed at the joint of the upper and lower jaw sliding groove members and the lower jaw mounting member 21;
the lower claw 24 sequentially enters the chute of the upper and lower claw chute piece 25 and the strip-shaped opening at the left end of the lower claw mounting piece 21 from right to left;
the first rubber ring 26 is positioned on the periphery of the rubber radial limiting piece 22, positioned on the right side of the upper and lower claw sliding groove pieces 25 and arranged at intervals with the upper and lower claw sliding groove pieces 25;
a first rubber ring axial limiting sleeve 29 tightly attached to the right side of the first rubber ring 26 and positioned on the periphery of the rubber radial limiting piece 22;
the second rubber ring 27 is tightly attached to the right side of the first rubber ring axial limiting sleeve 29 and is positioned on the periphery of the rubber radial limiting piece 22;
the second rubber ring axial limiting sleeve 30 is tightly attached to the right side of the second rubber ring 27 and is positioned on the periphery of the rubber radial limiting piece 22;
the third rubber ring 28 is tightly attached to the right side of the second rubber ring axial limiting sleeve 30 and is positioned on the periphery of the rubber radial limiting piece 22;
the first rubber axial limiting sleeve 31 is tightly attached to the right side of the third rubber ring 28 and is positioned on the periphery of the rubber radial limiting piece 22, and an annular groove is formed in the right side;
the ruler nut 32 is positioned in the annular groove on the right side of the first rubber axial limiting sleeve 31 and is connected with the external thread in the middle of the rubber radial limiting piece 22;
the second rubber axial limiting sleeve 33 is positioned on the right side of the first rubber axial limiting sleeve 31, and an annular groove is formed in the right side;
the outer sealing sleeve 34 is positioned on the right side of the first rubber axial limiting sleeve 31, a groove is formed in the inner side of the left part, and an inner ring is arranged on the inner side of the right side;
the inner sealing sleeve 331 is positioned on the inner sides of the outer sealing sleeve 34 and the first rubber axial limiting sleeve 31;
the second fixture block 35 is located inside the outer sealing sleeve 34 and in a limiting hole of the rubber radial limiting piece 22;
a lower spring shaft 36, the left end of which is provided with a necking and an external thread positioned on the periphery of the necking, the external thread is connected with an internal thread arranged inside the right side of the limiting hole of the rubber radial limiting part 22, the right side of which is provided with an external thread, and the right side of the external thread is provided with the necking;
a pre-tightening spring 37, which is located at the periphery of the lower spring shaft 36, and the left end of which abuts against the right end of the outer sealing sleeve 34;
the left end of the external hexagonal connecting piece 38 abuts against the pre-tightening spring 37, an internal thread connected with the external thread arranged on the right side of the lower spring shaft 36 is formed on the inner side of the left part, a necking is arranged on the right side, and an external thread is arranged on the outer side of the necking;
a plunger 39, the left part of which is inserted into the necking of the external hexagonal connecting piece 38 from right to left, and the right part of which is clamped at the right side of the necking;
and the left end of the screen cylinder 40 is provided with an internal thread connected with the external thread of the necking of the external hexagonal connecting piece 38, and the side wall of the screen cylinder is provided with a strip-shaped opening.
The bridge plug is instantly released through the delivery cylinder, the first spring 4 instantly props up the upper jaw 12 to prop against the inner wall of an oil pipe by the aid of impulse force caused by the instant release of the delivery cylinder, meanwhile, the lower jaw 24 instantly opens and grips the inner wall of the oil pipe by the aid of pressure released by the second spring 14, meanwhile, the first rubber ring 26, the second rubber ring 27 and the third rubber ring 28 rapidly expand to seal the oil pipe, and the spring check ring is pushed to a preset position to be locked, so that rubber of the spring check ring cannot be restored.
The concrete working process of the bridge plug comprises the following steps:
1. as shown in fig. 1B and 2B, the wire-operated vehicle throws out the arbitrary position bidirectional setting bridge plug by emergency braking, wherein the first spring 4 is compressed by the impact force.
2. As shown in fig. 3B, the throwing nut 2, the inner rod 6 of the throwing cylinder, the first spring 4 and the upper spring claw move downwards until the upper spring claw 5 enters the annular groove of the dragging cylinder 3, the upper spring claw 5 opens to separate the upper jaw 12 from the dragging cylinder 3 due to sufficient space, and the upper jaw 12 moves upwards under the pushing force released by the stainless steel second spring 14 until the inner wall of the oil pipe is propped.
3. As shown in fig. 4B and 5B, the inner core 9 of the dispensing cylinder is pulled out from the 2 blocks 35, the blocks 35 are contracted inwards due to the pressure of the pre-tightening spring 36, the outer sealing sleeve 34 pushes the second rubber axial limiting sleeve 33, the first rubber axial limiting sleeve 31, the rubber rings (28, 27, 26) and the rubber ring axial limiting sleeves (30, 29) upwards until the lower claws 24 support the inner wall of the oil pipe, and the rubber rings (28, 27, 26) are deformed to seal the oil pipe due to space compression.
4. The throwing device is separated from any position to seal the bridge plug in a bidirectional setting way, and is taken out along with the steel wire recovery (the steel wire is fixed in the throwing outer cylinder 1) of the steel wire operation vehicle, and the throwing operation is finished.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (3)
1. An arbitrary position bidirectional setting bridge plug, characterized in that the bridge plug comprises:
the device comprises an upper throwing outer cylinder (1), wherein a necking down is arranged at the left end of the upper throwing outer cylinder (1), an external thread is formed on the periphery of the necking down, and an internal thread is formed at the right end of the upper throwing outer cylinder (1);
the throwing nut (2) is coaxial with the upper throwing outer cylinder (1) and is positioned in the upper throwing outer cylinder (1);
the left end of the dragging cylinder (3) is provided with an external thread connected with the internal thread at the right end of the upper throwing outer cylinder (1), and the inner side of the right part of the dragging cylinder is provided with an annular groove;
a first spring (4);
the left end of the upper spring clamping jaw (5) is provided with internal threads, the right end of the upper spring clamping jaw is formed into a coaxial supporting jaw, and a convex block is formed at the right end of the supporting jaw of the upper spring clamping jaw (5);
an inner rod (6) of the throwing cylinder is provided with an internal thread connected with the throwing nut (2) at the left end, and an external thread and an internal thread are arranged at the right end, and the external thread is used for connecting the internal thread of the upper spring clamping jaw (5); the first spring (4) is arranged on the periphery of the inner rod (6) of the throwing cylinder and inside the upper throwing outer cylinder (1), and can be compressed by the right end of the throwing nut (2) and the left end of the dragging cylinder (3);
a fishing nut (7);
the upper jaw limiting rod (8) is hollow and is positioned inside the dragging cylinder (3), the left end of the upper jaw limiting rod is provided with an external thread connected with the fishing nut (7), the right end of the upper jaw limiting rod is provided with an annular groove, and the right end of the upper jaw limiting rod is provided with an outer ring;
the throwing cylinder inner core (9) is positioned inside the upper jaw limiting rod (8), the left end of the throwing cylinder inner core is provided with an external thread connected with the internal thread of the throwing cylinder inner rod (6), and the right end of the throwing cylinder inner core is formed into a tip;
the upper jaw axial limiting part (10) is positioned on the periphery of the upper jaw limiting rod (8) and inside the dragging cylinder (3), and an annular groove is formed at the left end of the upper jaw axial limiting part and is used for fixing a convex block at the right end of a supporting jaw of the upper spring jaw (5) between the upper jaw limiting rod (8) and the dragging cylinder (3); the middle part is provided with a side wall round hole, three chutes which are axially arranged and connected with each other and a side wall strip-shaped opening, and the right end is provided with a necking down and an external thread on the periphery of the necking down;
the small cylinder (11) is inserted into a side wall round hole of the upper jaw axial limiting piece (10);
the upper clamping jaw (12) is inserted into the three axially arranged and connected inclined grooves and the side wall strip-shaped opening of the upper clamping jaw axial limiting piece (10) from left to right and abuts against the right end of the dragging cylinder (3);
a first outer cylinder (13), wherein the left end of the first outer cylinder is provided with an internal thread connected with an external thread on the necking periphery of the upper jaw axial limiting piece (10), the right side of the first outer cylinder is provided with an external thread, and the side surface of the first outer cylinder is provided with a square opening;
a second spring (14) located on the outer periphery of the first outer cylinder (13);
the first clamping block outer sleeve (15) is positioned on the periphery of the upper clamping jaw axial limiting piece (10), and is arranged between the second spring (14) and the upper clamping jaw (12);
the second fixture sleeve (16) is positioned on the peripheries of the first outer cylinder (13) and the second spring (14);
the first clamping block (17) is positioned in the square opening of the first outer cylinder (13);
the left end of the second outer cylinder (18) is provided with an internal thread connected with the external thread at the right end of the first outer cylinder (13), and the right end of the second outer cylinder is provided with an opening;
the lower claw spring (19) is positioned on the inner side of the second outer cylinder (18), the periphery of the inner core (9) of the throwing cylinder is formed into a coaxial supporting claw, a convex block is formed at the left end of the supporting claw of the lower claw spring (19), the supporting claw of the lower claw spring (19) is clamped at the rightmost end of the upper claw limiting rod (8) and props against the outer ring of the right end of the upper claw limiting rod, and an internal thread is arranged at the right end of the lower claw spring;
the lower claw radial limiting piece (20) is positioned on the outer side of the throwing barrel inner core (9), the left end of the lower claw radial limiting piece is provided with an external thread connected with the right end internal thread of the lower claw spring (19), and the right end of the lower claw radial limiting piece is provided with an internal thread;
a lower jaw mounting piece (21) with a necking at the right end and a strip-shaped opening at the left end, wherein the necking is positioned at the inner side of the second outer cylinder (18);
the rubber radial limiting part (22) is positioned on the outer side of the inner core (9) of the throwing barrel and positioned on the inner side of the lower jaw mounting part (21), the left end of the rubber radial limiting part is provided with an external thread connected with the internal thread at the right end of the lower jaw radial limiting part (20), the middle part of the rubber radial limiting part is formed into an external thread, the right side of the external thread is provided with an annular groove at intervals, a limiting hole is arranged inside the right side of the annular groove, and an internal thread is arranged inside the right side of the limiting hole;
a screw (23) located in a right end opening of the second outer barrel (18);
the upper and lower claw sliding groove pieces (25) are positioned on the periphery of the rubber radial limiting piece (22), and a chute connected with a strip-shaped opening at the left end of the lower claw mounting piece (21) is formed at the joint of the upper and lower claw sliding groove pieces and the lower claw mounting piece (21);
the lower clamping jaws (24) sequentially enter the chutes of the upper and lower clamping jaw sliding groove pieces (25) and the strip-shaped opening at the left end of the lower clamping jaw mounting piece (21) from right to left;
the first rubber ring (26) is positioned on the periphery of the rubber radial limiting piece (22), positioned on the right side of the upper and lower claw sliding groove pieces (25) and arranged at intervals with the upper and lower claw sliding groove pieces (25);
the first rubber ring axial limiting sleeve (29) is tightly attached to the right side of the first rubber ring (26) and is positioned on the periphery of the rubber radial limiting piece (22);
the second rubber ring (27) is tightly attached to the right side of the first rubber ring axial limiting sleeve (29) and is positioned on the periphery of the rubber radial limiting piece (22);
the second rubber ring axial limiting sleeve (30) is tightly attached to the right side of the second rubber ring (27) and is positioned on the periphery of the rubber radial limiting piece (22);
the third rubber ring (28) is tightly attached to the right side of the second rubber ring axial limiting sleeve (30) and is positioned on the periphery of the rubber radial limiting piece (22);
the first rubber axial limiting sleeve (31) is tightly attached to the right side of the third rubber ring (28) and is positioned on the periphery of the rubber radial limiting piece (22), and an annular groove is formed in the right side;
the ruler nut (32) is positioned in the annular groove on the right side of the first rubber axial limiting sleeve (31) and is connected with the external thread in the middle of the rubber radial limiting piece (22);
the second rubber axial limiting sleeve (33) is positioned on the right side of the first rubber axial limiting sleeve (31), and an annular groove is formed in the right side;
the outer sealing sleeve (34) is positioned on the right side of the first rubber axial limiting sleeve (31), a groove is formed in the inner side of the left part, and an inner ring is arranged on the inner side of the right side;
the inner sealing sleeve (331) is positioned on the inner sides of the outer sealing sleeve (34) and the first rubber axial limiting sleeve (31);
the second clamping block (35) is positioned on the inner side of the outer sealing sleeve (34) and in a limiting hole of the rubber radial limiting piece (22);
the left end of the lower spring shaft (36) is provided with a necking down and an external thread positioned on the periphery of the necking down, the external thread is connected with an internal thread arranged inside the right side of a limiting hole of the rubber radial limiting piece (22), the right side of the lower spring shaft is provided with an external thread, and the right side of the external thread is provided with the necking down;
the pre-tightening spring (37) is positioned on the periphery of the lower spring shaft (36), and the left end of the pre-tightening spring abuts against the right end of the outer sealing sleeve (34);
the left end of the external hexagonal connecting piece (38) abuts against the pre-tightening spring (37), an internal thread connected with the external thread arranged on the right side of the lower spring shaft (36) is formed on the inner side of the left part, a necking is arranged on the right side, and the external thread is arranged on the outer side of the necking;
the left part of the plunger (39) is plugged into the necking of the external hexagonal connecting piece (38) from right to left, and the right part of the plunger is clamped on the right side of the necking;
the left end of the screen cylinder (40) is provided with an internal thread connected with an external thread of the necking of the external hexagonal connecting piece (38), and the side wall of the screen cylinder is provided with a strip-shaped opening;
a filtering inner net is arranged in the screen drum (40), and the filtering inner net is positioned on the inner side of the strip-shaped opening of the screen drum (40);
the bridge plug further comprises a lower throwing outer cylinder, and the lower throwing outer cylinder is sleeved on the periphery of the right portion of the screen cylinder (40).
2. The free-site, bi-directional setting bridge plug of claim 1, wherein the upper jaw and the lower jaw are stainless steel.
3. The free-position bidirectional setting bridge plug according to claim 1, characterized in that the right end tip of the dropping cylinder inner core (9) is fixed in the rubber radial stopper (22) by a second fixture block (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005215.6A CN106761540B (en) | 2017-01-04 | 2017-01-04 | Random position bidirectional setting bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005215.6A CN106761540B (en) | 2017-01-04 | 2017-01-04 | Random position bidirectional setting bridge plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761540A CN106761540A (en) | 2017-05-31 |
| CN106761540B true CN106761540B (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710005215.6A Active CN106761540B (en) | 2017-01-04 | 2017-01-04 | Random position bidirectional setting bridge plug |
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| Country | Link |
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| CN (1) | CN106761540B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814611B (en) * | 2021-01-05 | 2021-08-27 | 大庆丹枫石油技术开发有限公司 | Integrated soluble bridge plug |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265389Y (en) * | 2008-09-25 | 2009-07-01 | 西部钻探吐哈钻井工艺研究院 | Lower-pressure deblocking type bridge plug and deblocking suspension |
| CN204827359U (en) * | 2015-07-22 | 2015-12-02 | 中国石油化工股份有限公司 | But integration modus ponens oil recovery bridging plug |
| CN205225180U (en) * | 2015-10-21 | 2016-05-11 | 中国石油天然气集团公司 | Bridging plug |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436150A (en) * | 1981-09-28 | 1984-03-13 | Otis Engineering Corporation | Bridge plug |
| US4441721A (en) * | 1982-05-06 | 1984-04-10 | Halliburton Company | High temperature packer with low temperature setting capabilities |
| US4440233A (en) * | 1982-07-06 | 1984-04-03 | Hughes Tool Company | Setting tool |
| CN201013287Y (en) * | 2007-03-01 | 2008-01-30 | 华北石油管理局 | Retrievable fishing barrel for reclaiming bridging plug |
| CN201486515U (en) * | 2009-09-25 | 2010-05-26 | 鄂晓娟 | Switch type releasing packer |
| CN102561991B (en) * | 2012-01-18 | 2014-08-06 | 中国石油天然气股份有限公司 | Small-diameter hydrostatic setting plug |
| CN203081398U (en) * | 2012-11-12 | 2013-07-24 | 中国石油天然气股份有限公司 | Hydraulic setting-seal-type small size oil pipe bridge plug |
| CN103806864B (en) * | 2012-11-12 | 2017-02-01 | 中国石油天然气股份有限公司 | Hydraulic set-packer small-diameter oil pipe bridge plug |
| CN104074491B (en) * | 2014-07-09 | 2016-05-18 | 中国石油集团渤海钻探工程有限公司 | Oil pipe bridge plug |
| CN203961903U (en) * | 2014-07-09 | 2014-11-26 | 中国石油集团渤海钻探工程有限公司 | Oil-pipe bridge plug |
| US9617825B2 (en) * | 2014-12-10 | 2017-04-11 | Baker Hughes Incorporated | Packer or bridge plug backup release system of forcing a lower slip cone from a slip assembly |
| CN104847304B (en) * | 2015-05-18 | 2017-04-12 | 中国石油集团渤海钻探工程有限公司 | bridge plug setting tool |
| CN206418997U (en) * | 2017-01-04 | 2017-08-18 | 廊坊开发区森德石油设备有限公司 | A kind of optional position is two-way to set bridging plug |
-
2017
- 2017-01-04 CN CN201710005215.6A patent/CN106761540B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265389Y (en) * | 2008-09-25 | 2009-07-01 | 西部钻探吐哈钻井工艺研究院 | Lower-pressure deblocking type bridge plug and deblocking suspension |
| CN204827359U (en) * | 2015-07-22 | 2015-12-02 | 中国石油化工股份有限公司 | But integration modus ponens oil recovery bridging plug |
| CN205225180U (en) * | 2015-10-21 | 2016-05-11 | 中国石油天然气集团公司 | Bridging plug |
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| CN106761540A (en) | 2017-05-31 |
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