CN109372463B - Static pressure bypass packer - Google Patents
Static pressure bypass packer Download PDFInfo
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- CN109372463B CN109372463B CN201811508612.6A CN201811508612A CN109372463B CN 109372463 B CN109372463 B CN 109372463B CN 201811508612 A CN201811508612 A CN 201811508612A CN 109372463 B CN109372463 B CN 109372463B
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- connecting pipe
- sleeve
- wall
- bypass
- cylinder
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- 230000003068 static effect Effects 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 230000033001 locomotion Effects 0.000 claims abstract description 4
- 210000002445 nipple Anatomy 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims description 2
- 230000002706 hydrostatic effect Effects 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003345 natural gas Substances 0.000 abstract description 2
- 239000003209 petroleum derivative Substances 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/122—Multiple string packers
Landscapes
- 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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to the technical field of petroleum and natural gas exploitation equipment, in particular to a static pressure bypass packer. Comprises an upper connecting pipe, an outer connecting sleeve, a lower connecting pipe, an inner connecting pipe and a switch sleeve; when the hydraulic cylinder is used, a worker can push the switch sleeve through the service pipe column, so that the second pressure transmission hole on the inner chain connecting pipe is unblocked, liquid can enter the hydraulic cylinder through the first pressure transmission hole, the piston is pushed to move, the rubber cylinder is extruded to deform by the movement of the piston, and the seat sealing work is completed; when the static pressure bypass packer is blocked, liquid passes through the first bypass port, the annular space between the outer connecting sleeve and the upper connecting pipe, the second bypass port, the annular space between the upper connecting pipe and the inner connecting pipe, the annular space between the lower connecting pipe and the inner connecting pipe, the bypass channel of the annular space between the inner connecting pipe, the lower connecting pipe and the inner connecting pipe, and the annular space between the lower connecting pipe and the inner connecting pipe.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas exploitation equipment, in particular to a static pressure bypass packer.
Background
The horizontal well exploitation has obvious advantages in the aspects of improving the oil well yield and the economic benefit of oil field exploitation due to large oil drainage area, and has extremely high probability of losing blocks, reducing and collapsing instability risks of the wall of the mudstone section due to the heterogeneity of the oil reservoir, the change of the inclination angle of the stratum and the need of the reservoir exploitation of part of unavoidable mud-rock section, so that the whole gravel filling operation of the openhole well is failed.
Therefore, providing a static pressure bypass packer with good filling effect is an important technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a static pressure bypass packer so as to solve the technical problem of poor filling effect in the prior art.
The embodiment of the invention provides a static pressure bypass packer, which comprises an upper connecting pipe, an outer connecting sleeve, a lower connecting pipe, an inner connecting pipe and a switch sleeve;
The outer wall of the upper connecting pipe is provided with a first bypass port and a second bypass port, the outer connecting sleeve is sleeved outside the upper connecting pipe, the upper end and the lower end of the outer connecting sleeve are fixedly connected with the upper connecting pipe, and the outer connecting sleeve covers the first bypass port and the second bypass port so that the first bypass port is communicated with the second bypass port;
the lower connecting pipe is in threaded connection with the upper connecting pipe, a hydraulic cylinder, a piston and a rubber cylinder are sleeved on the outer wall of the lower connecting pipe from top to bottom in sequence, the hydraulic cylinder is fixedly connected with the lower connecting pipe, the piston is in sliding connection with the lower connecting pipe, one end of the rubber cylinder is abutted to the piston, the other end of the rubber cylinder is abutted to the lower connecting pipe, and a first pressure transmission hole is formed between the bottom of the hydraulic cylinder and the piston;
the inner connecting pipe is in threaded connection with the lower connecting pipe, a second pressure transmission hole corresponding to the first pressure transmission hole is formed in the inner connecting pipe, a first clamping groove and a second clamping groove which are matched with the switch sleeve are formed in the inner connecting pipe, when the switch sleeve is positioned in the first clamping groove, the switch sleeve covers the second pressure transmission hole, and when the switch sleeve is positioned in the second clamping groove, the second pressure transmission hole is smooth;
The upper connecting pipe and the inner connecting pipe form a first cavity, the lower connecting pipe and the inner connecting pipe form a second cavity, and the inner connecting pipe is provided with a bypass channel for communicating the first cavity with the second cavity.
The first possible implementation manner provided by the embodiment of the invention is that the upper connecting pipe comprises an upper short section, an inner connecting sleeve and an upper communicating pipe;
the upper short section, the inner connecting sleeve and the upper communicating pipe are sequentially connected in a threaded mode from top to bottom.
The second possible implementation manner provided by the embodiment of the present invention is that the first bypass port is located on the upper short section, and the second bypass port is located on the upper communicating pipe.
The third possible implementation manner provided by the embodiment of the present invention, wherein the lower connecting pipe includes an upper joint, a central pipe, a lower joint and a lower nipple;
the upper joint, the central tube, the lower joint and the lower nipple are sequentially connected in a threaded mode from top to bottom.
The fourth possible implementation manner provided by the embodiment of the present invention, wherein the outer wall at one end of the central tube is in threaded connection with the inner wall of the upper joint, and the outer wall at the other end of the central tube is in threaded connection with the inner wall of the lower joint;
the first pressure transmission hole is positioned on the central tube.
A fifth possible implementation manner provided by the embodiment of the present invention, wherein the inner connecting pipe includes an upper sealing cylinder, a double-pass body, a middle sealing cylinder and a lower sealing cylinder;
The upper sealing cylinder, the double-body, the middle sealing cylinder and the lower sealing cylinder are sequentially connected from top to bottom;
the upper sealing cylinder is in sealing connection with the inner connecting sleeve;
The outer wall of one end of the double-pass body is in threaded connection with the inner wall of the central tube, and the other end of the double-pass body is in sealed connection with the central tube.
In a sixth possible implementation manner provided by the embodiment of the present invention, an inner wall at one end of the double-pass body is in threaded connection with an outer wall of the upper sealing cylinder, and an inner wall at the other end of the double-pass body is in threaded connection with an outer wall of the middle sealing cylinder.
In a seventh possible implementation manner provided by the embodiment of the present invention, the second pressure transmitting hole and the bypass channel are both located on the two-way body, and an axis of the second pressure transmitting hole is perpendicular to an axis of the bypass channel;
the second pressure transmission hole is not communicated with the bypass channel;
The first clamping groove and the second clamping groove are both positioned in the double-pass body.
According to an eighth possible implementation manner provided by the embodiment of the present invention, the piston is abutted to the rubber cylinder through a thrust sleeve, and the piston is abutted to the thrust sleeve through a force transmission sleeve;
a sealing body is arranged between the force transmission sleeve and the central tube;
the power transmission sleeve with thrust sleeve threaded connection, just power transmission sleeve with be provided with the catch between the thrust sleeve, the catch inner wall is provided with first latch, the center tube outer wall be provided with the second latch of first latch adaptation, in order to avoid the catch towards piston direction motion.
According to a ninth possible implementation manner provided by the embodiment of the invention, the rubber cylinder comprises a first side rubber cylinder, a second side rubber cylinder and a middle rubber cylinder, wherein the first side rubber cylinder and the second side rubber cylinder are arranged at the upper end and the lower end of the middle rubber cylinder, and a separation ring is arranged between the first side rubber cylinder and the middle rubber cylinder and between the second side rubber cylinder and the middle rubber cylinder;
the first side rubber cylinder is abutted with the thrust sleeve through a copper umbrella, and the second side rubber cylinder is abutted with the lower joint through a copper umbrella.
The beneficial effects are that:
the embodiment of the invention provides a static pressure bypass packer, which comprises an upper connecting pipe, an outer connecting sleeve, a lower connecting pipe, an inner connecting pipe and a switch sleeve; the outer wall of the upper connecting pipe is provided with a first bypass port and a second bypass port, the outer connecting sleeve is sleeved outside the upper connecting pipe, the upper end and the lower end of the outer connecting sleeve are fixedly connected with the upper connecting pipe, and the outer connecting sleeve covers the first bypass port and the second bypass port so that the first bypass port is communicated with the second bypass port; the lower connecting pipe is in threaded connection with the upper connecting pipe, the outer wall of the lower connecting pipe is sequentially sleeved with a hydraulic cylinder, a piston and a rubber cylinder from top to bottom, the hydraulic cylinder is fixedly connected with the lower connecting pipe, the piston is in sliding connection with the lower connecting pipe, one end of the rubber cylinder is abutted with the piston, the other end of the rubber cylinder is abutted with the lower connecting pipe, and a first pressure transmission hole is formed between the bottom of the hydraulic cylinder and the piston; the inner connecting pipe is in threaded connection with the lower connecting pipe, a second pressure transmission hole corresponding to the first pressure transmission hole is formed in the inner connecting pipe, a first clamping groove and a second clamping groove which are matched with the switch sleeve are formed in the inner connecting pipe, the switch sleeve covers the second pressure transmission hole when the switch sleeve is positioned in the first clamping groove, and the second pressure transmission hole is smooth when the switch sleeve is positioned in the second clamping groove; a first cavity is formed between the upper connecting pipe and the inner connecting pipe, a second cavity is formed between the lower connecting pipe and the inner connecting pipe, and a bypass channel used for communicating the first cavity with the second cavity is formed in the inner connecting pipe. When the hydraulic cylinder is used, a worker can push the switch sleeve through the service pipe column, so that the second pressure transmission hole on the inner chain connecting pipe is unblocked, liquid can enter the hydraulic cylinder through the first pressure transmission hole, the piston is pushed to move, the rubber cylinder is extruded to deform by the movement of the piston, and the seat sealing work is completed; when the static pressure bypass packer is blocked, liquid passes through the first bypass port, the annular space between the outer connecting sleeve and the upper connecting pipe, the second bypass port, the annular space between the upper connecting pipe and the inner connecting pipe, the annular space between the lower connecting pipe and the inner connecting pipe, the bypass channel of the annular space between the inner connecting pipe, the lower connecting pipe and the inner connecting pipe, and the annular space between the lower connecting pipe and the inner connecting pipe.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a static bypass packer according to an embodiment of the present invention;
FIG. 2 is a partial view of a static bypass packer provided in an embodiment of the invention;
FIG. 3 is a partial view of a static bypass packer provided in an embodiment of the invention;
FIG. 4 is a partial view of a static bypass packer provided in an embodiment of the invention;
Fig. 5 is an enlarged view at a in fig. 4;
FIG. 6 is an enlarged view at B in FIG. 4;
FIG. 7 is a schematic diagram of a dual pass in a static bypass packer provided by an embodiment of the invention.
Icon: 1-an upper short section; 2-an outer connecting sleeve; 3-connecting the inner connecting sleeve; 4-an upper sealing cylinder; 5-upper communicating pipe; 6-upper joint; 7-a central tube; 8-double-body; 9-a hydraulic cylinder; 10-a piston; 11-a switch sleeve; 12-a middle sealing cylinder; 13-a force transmission sleeve; 14-a sealing body; 15-clamping rings; 16-locking ring; 17-a thrust sleeve; 18-edge rubber cylinder; 19-spacer rings; 20-rubber cylinder; 21-copper umbrella; 22-lower joint; 23-lower short section; 24-a lower sealing cylinder; 25-a first pressure transmission hole; 26-a second pressure transmission hole; 27-a first bypass port; 28-a second bypass port; 29-a first card slot; 30-a second clamping groove; 31-a first latch; 32-a second latch; 33-bypass passage.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
Referring to fig. 1-7:
The embodiment of the invention provides a static pressure bypass packer, which comprises an upper connecting pipe, an outer connecting sleeve 2, a lower connecting pipe, an inner connecting pipe and a switch sleeve 11; the outer wall of the upper connecting pipe is provided with a first bypass port 27 and a second bypass port 28, the outer connecting sleeve 2 is sleeved outside the upper connecting pipe, the upper end and the lower end of the outer connecting sleeve 2 are fixedly connected with the upper connecting pipe, and the outer connecting sleeve 2 covers the first bypass port 27 and the second bypass port 28 so that the first bypass port 27 is communicated with the second bypass port 28; the lower connecting pipe is in threaded connection with the upper connecting pipe, the outer wall of the lower connecting pipe is sequentially sleeved with a hydraulic cylinder 9, a piston 10 and a rubber cylinder 20 from top to bottom, the hydraulic cylinder 9 is fixedly connected with the lower connecting pipe, the piston 10 is in sliding connection with the lower connecting pipe, one end of the rubber cylinder 20 is abutted with the piston 10, the other end of the rubber cylinder 20 is abutted with the lower connecting pipe, and a first pressure transmission hole 25 is formed between the bottom of the hydraulic cylinder 9 and the piston 10; the inner connecting pipe is in threaded connection with the lower connecting pipe, a second pressure transmission hole 26 corresponding to the first pressure transmission hole 25 is formed in the inner connecting pipe, a first clamping groove 29 and a second clamping groove 30 which are matched with the switch sleeve 11 are formed in the inner connecting pipe, when the switch sleeve 11 is positioned in the first clamping groove 29, the switch sleeve 11 covers the second pressure transmission hole 26, and when the switch sleeve 11 is positioned in the second clamping groove 30, the second pressure transmission hole 26 is smooth; a first cavity is formed between the upper connecting pipe and the inner connecting pipe, a second cavity is formed between the lower connecting pipe and the inner connecting pipe, and a bypass channel 33 used for communicating the first cavity with the second cavity is formed on the inner connecting pipe.
When the hydraulic cylinder is used, a worker can push the switch sleeve 11 through the service pipe column, so that the second pressure transmission hole 26 on the inner connecting pipe is unblocked, liquid can enter the hydraulic cylinder 9 through the first pressure transmission hole 25, the piston 10 is pushed to move, the piston 10 moves to squeeze the rubber cylinder 20 to deform, and the seat sealing work is completed; when the static pressure bypass packer is internally blocked, liquid passes through the first bypass port 27, the annular space between the outer connecting sleeve 2 and the upper connecting pipe, the second bypass port 28, the annular space between the upper connecting pipe and the inner connecting pipe, the annular space between the lower connecting pipe and the inner connecting pipe, the bypass channel 33 of the annular space between the inner connecting pipe and the inner connecting pipe, and the annular space between the lower connecting pipe and the inner connecting pipe.
Specifically, the static pressure bypass packer provided by the embodiments of the invention can be used in series, so that the length of a bypass passage is prolonged, or the static pressure bypass packer is matched with a filling pipe column, and the filling pipe column can be ensured to work normally even if the pipe column is blocked.
In an alternative scheme of the embodiment, the upper connecting pipe comprises an upper short section 1, an inner connecting sleeve 3 and an upper communicating pipe 5; the upper short section 1, the inner connecting sleeve 3 and the upper communicating pipe 5 are sequentially connected in a threaded manner from top to bottom.
In an alternative to this embodiment, the first bypass port 27 is located on the upper nipple 1 and the second bypass port 28 is located on the upper communication pipe 5.
Specifically, the inner wall of the one end of the upper nipple 1 is in threaded connection with the outer wall of the inner connecting sleeve 3, and the inner connecting sleeve 3 is far away from the outer wall of the first end of the upper nipple 1 and is in threaded connection with the inner wall of the upper communicating pipe 5.
One end of the upper short section 1, which is far away from the inner connecting sleeve 3, is connected with a connecting end pipe, and two static pressure bypass packers can be connected in series through the connecting end pipe.
Specifically, the first bypass port 27 is disposed on the upper nipple 1, the second bypass port 28 is disposed on the upper communicating pipe 5, and the outer wall of the upper nipple 1 and the outer wall of the upper communicating pipe 5 are sleeved with the outer connecting sleeve 2, one end of the outer connecting sleeve 2 is welded with the outer wall of the upper nipple 1, the other end of the outer connecting sleeve 2 is welded with the outer wall of the upper communicating pipe 5, and an annular space exists between the outer connecting sleeve 2 and the upper communicating pipe, so that liquid flows through.
In an alternative of this embodiment, the lower connecting pipe comprises an upper joint 6, a central pipe 7, a lower joint 22 and a lower nipple 23; the upper joint 6, the central pipe 7, the lower joint 22 and the lower nipple 23 are sequentially connected in a threaded manner from top to bottom.
In the alternative scheme of the embodiment, the outer wall of one end of the central tube 7 is in threaded connection with the inner wall of the upper joint 6, and the outer wall of the other end of the central tube 7 is in threaded connection with the inner wall of the lower joint 22; the first pressure transfer hole 25 is located on the central tube 7.
The concrete lower connecting pipe comprises an upper joint 6, a lower joint 22, a central pipe 7 and a lower short joint 23, which are sequentially connected in a threaded manner from top to bottom.
Wherein, the outer wall of center tube 7 one end and the inner wall threaded connection of top connection 6, the outer wall of center tube 7 other end and the inner wall threaded connection of lower clutch 22, top connection 6 and lower clutch 22 all bulge center tube 7, the outer wall of top connection 6 and pneumatic cylinder 9 threaded connection, and be provided with the sealing washer between pneumatic cylinder 9 and the top connection 6, the tip and the packing element 20 butt of lower clutch 22.
In an alternative to this embodiment, the inner connecting tube comprises an upper sealing cylinder 4, a double pass body 8, a middle sealing cylinder 12 and a lower sealing cylinder 24; the upper sealing cylinder 4, the double-pass body 8, the middle sealing cylinder 12 and the lower sealing cylinder 24 are sequentially connected from top to bottom; the upper sealing cylinder 4 is in sealing connection with the inner connecting sleeve 3; the outer wall of one end of the double-pass body 8 is in threaded connection with the inner wall of the central tube 7, and the other end of the double-pass body is in sealed connection with the central tube 7.
In an alternative of this embodiment, the inner wall of one end of the double-pass body 8 is in threaded connection with the outer wall of the upper seal cylinder 4, and the inner wall of the other end is in threaded connection with the outer wall of the middle seal cylinder 12.
In the alternative of the embodiment, the second pressure transmitting hole 26 and the bypass channel 33 are both positioned on the double-pass body 8, and the axis of the second pressure transmitting hole 26 is perpendicular to the axis of the bypass channel 33; the second pressure transmitting hole 26 is not communicated with the bypass passage 33; the first clamping groove 29 and the second clamping groove 30 are both positioned in the double-pass body 8.
Specifically, the end of the upper sealing cylinder 4 far away from the double-pass body 8 is in sealing connection with the inner connecting sleeve 3, and the first bypass port 27, the annular space between the outer connecting sleeve 2 and the inner connecting sleeve 3, the second bypass port 28, the upper communicating pipe 5 and the upper sealing cylinder 4 form a first cavity.
Wherein, a second cavity is formed between the middle sealing cylinder 12 and the central pipe 7, between the middle sealing cylinder 12 and the lower joint 22, and between the lower sealing cylinder 24 and the lower short joint 23; and the bypass channel 33 is arranged on the double-pass body 8, and the bypass channel 33 can be used for communicating the first cavity with the second cavity.
Specifically, the second pressure transmission hole 26 is located on the double-pass body 8, a first clamping groove 29 and a second clamping groove 30 are formed in the inner wall of the double-pass body 8, the first clamping groove 29 and the second clamping groove 30 can be matched with the switch sleeve 11, and when the switch sleeve 11 is located in the first clamping groove 29, the switch sleeve 11 can cover the second pressure transmission hole 26; when the switch sleeve 11 is positioned in the second clamping groove 30, the second pressure transmission hole 26 is unblocked.
The second pressure transmitting hole 26 and the bypass passage 33 of the double-pass body 8 are not communicated with each other.
In the alternative scheme of the embodiment, the piston 10 is abutted with the rubber cylinder 20 through the thrust sleeve 17, and the piston 10 is abutted with the thrust sleeve 17 through the force transmission sleeve 13; a sealing body 14 is arranged between the force transmission sleeve 13 and the central tube 7; the force transmission sleeve 13 is in threaded connection with the thrust sleeve 17, a lock ring 16 is arranged between the force transmission sleeve 13 and the thrust sleeve 17, a first latch tooth 31 is arranged on the inner wall of the lock ring 16, and a second latch tooth 32 matched with the first latch tooth 31 is arranged on the outer wall of the central tube 7 so as to prevent the lock ring 16 from moving towards the piston 10.
Specifically, the piston 10 is connected to the hydraulic cylinder 9 through a pin, and when the liquid enters the hydraulic cylinder 9 from the first pressure transmitting hole 25, the piston 10 is pushed, so that the pin is cut off. The piston 10 pushes the force transmission sleeve 13 first, then the force transmission sleeve 13 pushes the thrust sleeve 17, and the thrust sleeve 17 presses the rubber cylinder 20.
The lock ring 16 is arranged between the force transmission sleeve 13 and the thrust sleeve 17, a first latch tooth 31 is arranged on the inner wall of the lock ring 16, a second latch tooth 32 matched with the first latch tooth 31 is arranged on the outer wall of the central tube 7, when the piston 10 pushes the force transmission sleeve 13 to move, the lock ring 16 moves along with the force transmission sleeve, after the hydraulic pressure pushing the piston 10 to move is closed by a worker, elastic potential energy is released by the rubber cylinder 20, the lock ring 16 is pushed to move reversely by the thrust sleeve 17, and the first latch tooth 31 on the lock ring 16 is abutted with the second latch tooth 32 on the outer wall of the central tube 7 at the moment, so that the lock ring 16 cannot move reversely, and the rubber cylinder 20 can finish the seat sealing work.
Wherein, be provided with seal body 14 between biography power cover 13 and the center tube 7, and be provided with two recesses on the center tube 7, be provided with snap ring 15 in the recess, seal body 14 sets up between two snap rings 15, guarantees the leakproofness between biography power cover 13 and the center tube 7.
In an alternative scheme of the embodiment, the rubber cylinder 20 comprises a first side rubber cylinder 18, a second side rubber cylinder 18 and a middle rubber cylinder 20, wherein the first side rubber cylinder 18 and the second side rubber cylinder 18 are arranged at the upper end and the lower end of the middle rubber cylinder 20, and a separation ring 19 is arranged between the first side rubber cylinder 18 and the second side rubber cylinder 18 and between the second side rubber cylinder 18 and the middle rubber cylinder 20; the first side rubber 18 is abutted against the thrust sleeve 17 through the copper umbrella 21, and the second side rubber 18 is abutted against the lower joint 22 through the copper umbrella 21.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1. A hydrostatic bypass packer, comprising: the device comprises an upper connecting pipe, an outer connecting pipe, a lower connecting pipe, an inner connecting pipe and a switch sleeve;
The outer wall of the upper connecting pipe is provided with a first bypass port and a second bypass port, the outer connecting sleeve is sleeved outside the upper connecting pipe, the upper end and the lower end of the outer connecting sleeve are fixedly connected with the upper connecting pipe, and the outer connecting sleeve covers the first bypass port and the second bypass port so that the first bypass port is communicated with the second bypass port;
The lower connecting pipe is in threaded connection with the upper connecting pipe, a hydraulic cylinder, a piston and a rubber cylinder are sleeved on the outer wall of the lower connecting pipe from top to bottom in sequence, the hydraulic cylinder is fixedly connected with the lower connecting pipe, the piston is in sliding connection with the lower connecting pipe, one end of the rubber cylinder is abutted to the piston, the other end of the rubber cylinder is abutted to the lower connecting pipe, a first pressure transmission hole is formed in the lower connecting pipe, and the pressure transmission hole is located between the bottom of the hydraulic cylinder and the piston;
the inner connecting pipe is in threaded connection with the lower connecting pipe, a second pressure transmission hole corresponding to the first pressure transmission hole is formed in the inner connecting pipe, a first clamping groove and a second clamping groove which are matched with the switch sleeve are formed in the inner connecting pipe, when the switch sleeve is positioned in the first clamping groove, the switch sleeve covers the second pressure transmission hole, and when the switch sleeve is positioned in the second clamping groove, the second pressure transmission hole is smooth;
a first cavity is formed between the upper connecting pipe and the inner connecting pipe, a second cavity is formed between the lower connecting pipe and the inner connecting pipe, and a bypass channel for communicating the first cavity with the second cavity is formed on the inner connecting pipe;
The upper connecting pipe comprises an upper short joint, an inner connecting sleeve and an upper communicating pipe; the upper short section, the inner connecting sleeve and the upper communicating pipe are sequentially connected in a threaded manner from top to bottom;
The first bypass port is positioned on the upper short section, and the second bypass port is positioned on the upper communicating pipe;
The lower connecting pipe comprises an upper joint, a central pipe, a lower joint and a lower nipple; the upper joint, the central tube, the lower joint and the lower nipple are sequentially connected in a threaded mode from top to bottom.
2. The static bypass packer of claim 1, wherein an outer wall of one end of the center tube is threadably connected to an inner wall of the upper joint, and an outer wall of the other end of the center tube is threadably connected to an inner wall of the lower joint;
the first pressure transmission hole is positioned on the central tube.
3. The static bypass packer of claim 1, wherein the inner connection tube comprises an upper seal cylinder, a double body, a middle seal cylinder, and a lower seal cylinder;
The upper sealing cylinder, the double-body, the middle sealing cylinder and the lower sealing cylinder are sequentially connected from top to bottom;
The upper sealing cylinder is in sealing connection with the inner connecting sleeve;
The outer wall of one end of the double-pass body is in threaded connection with the inner wall of the central tube, and the other end of the double-pass body is in sealed connection with the central tube.
4. The static bypass packer of claim 3, wherein an inner wall of one end of the double pass body is threadably connected to an outer wall of the upper seal cartridge and an inner wall of the other end is threadably connected to an outer wall of the middle seal cartridge.
5. The static bypass packer of claim 3, wherein the second pressure transfer port and the bypass passage are both located on the dual body, and an axis of the second pressure transfer port is perpendicular to an axis of the bypass passage;
the second pressure transmission hole is not communicated with the bypass channel;
The first clamping groove and the second clamping groove are both positioned in the double-pass body.
6. The hydrostatic bypass packer of claim 3, wherein the piston abuts the packing element through a thrust sleeve and the piston abuts the thrust sleeve through a force transmission sleeve;
a sealing body is arranged between the force transmission sleeve and the central tube;
the power transmission sleeve with thrust sleeve threaded connection, just power transmission sleeve with be provided with the catch between the thrust sleeve, the catch inner wall is provided with first latch, the center tube outer wall be provided with the second latch of first latch adaptation, in order to avoid the catch towards piston direction motion.
7. The static bypass packer of claim 6, wherein the packing element comprises a first side packing element, a second side packing element and a middle packing element, wherein the first side packing element and the second side packing element are respectively arranged at the upper end and the lower end of the middle packing element, and a spacer ring is arranged between the first side packing element and the second side packing element and the middle packing element;
the first side rubber cylinder is abutted with the thrust sleeve through a copper umbrella, and the second side rubber cylinder is abutted with the lower joint through a copper umbrella.
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| CN201811508612.6A CN109372463B (en) | 2018-12-10 | 2018-12-10 | Static pressure bypass packer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811508612.6A CN109372463B (en) | 2018-12-10 | 2018-12-10 | Static pressure bypass packer |
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| CN109372463A CN109372463A (en) | 2019-02-22 |
| CN109372463B true CN109372463B (en) | 2024-05-03 |
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| CN201811508612.6A Active CN109372463B (en) | 2018-12-10 | 2018-12-10 | Static pressure bypass packer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067527B (en) * | 2019-06-12 | 2023-09-29 | 天津凯雷油田技术有限公司 | Downhole sealing cylinder repairing tool |
| CN111927379B (en) * | 2020-10-14 | 2020-12-15 | 东营市瑞丰石油技术发展有限责任公司 | Bypass packer |
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| US4519456A (en) * | 1982-12-10 | 1985-05-28 | Hughes Tool Company | Continuous flow perforation washing tool and method |
| US6481496B1 (en) * | 1999-06-17 | 2002-11-19 | Schlumberger Technology Corporation | Well packer and method |
| CN101382052A (en) * | 2008-10-21 | 2009-03-11 | 张永祥 | Back-off packer |
| CN201568011U (en) * | 2009-12-16 | 2010-09-01 | 中国石油集团渤海钻探工程有限公司 | Chemical medium filling solidification type external packer |
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| CN109372463A (en) | 2019-02-22 |
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