CN114458226A - Hydraulic pipeline setting type cable-passing packer and well completion string using same - Google Patents
Hydraulic pipeline setting type cable-passing packer and well completion string using same Download PDFInfo
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- CN114458226A CN114458226A CN202111182753.5A CN202111182753A CN114458226A CN 114458226 A CN114458226 A CN 114458226A CN 202111182753 A CN202111182753 A CN 202111182753A CN 114458226 A CN114458226 A CN 114458226A
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- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000002343 natural gas well Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The invention provides a hydraulic pipeline setting type cable-passing packer and a well completion pipe string using the packer, wherein the inner wall of the tail end of an upper joint is in threaded connection with the outer wall of the head end of a central pipe, a pressure transfer hole penetrating through the upper joint is formed in the inner wall of the upper joint, a cavity is formed between the inner wall of the lower part of the upper joint and the upper part of the outer wall of the central pipe, a piston is arranged in the cavity in a sliding manner, a connecting sleeve is arranged on the central pipe at the tail end of the cavity, a locking ring is further arranged between the inner wall of the connecting sleeve and the outer wall of the upper joint, an upper gauge ring, a rubber cylinder and a lower gauge ring are sequentially arranged on the central pipe below the connecting sleeve from top to bottom, an upper cone, a slip and a lower cone are sequentially arranged on the central pipe below the lower gauge ring from top to bottom, a snap spring is arranged between the lower gauge ring and the upper cone, and a blocking ring is arranged at the tail end of the central pipe. The invention ensures that the setting of the well completion string does not need to throw or drag a blanking plug, thereby saving time and cost.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas well completion, in particular to a hydraulic pipeline setting type cable-passing packer and a well completion string using the packer.
Background
In the technical field of petroleum and natural gas well completion, a cable and a hydraulic pipeline are usually required to be lowered into an oil and gas well, and the cable passing packer provides a through passage for the cable and the hydraulic pipeline, so that the cable passing packer is a common tool in the well completion operation of the oil and gas well. The existing cable-passing packer needs to throw a plug in before setting, then an oil pipe is pressed for setting, and the plug is taken out through steel wire operation after setting. The plug throwing and taking out devices are many, the operation time is long, and the cost is high. The well completion of the oil and gas well is developed to an intelligent well completion mode, one purpose of the intelligent well completion is to realize remote control downhole operation, and the operation mode of the existing cable packer and the well completion pipe column thereof cannot meet the requirement of the intelligent well completion. After the existing cable-passing packer and the existing well completion pipe string thereof work for a long time in the underground, the cable-passing packer and the well completion pipe string thereof cannot be recovered due to the reasons of solid particle precipitation and the like, and the operation efficiency is seriously influenced due to the need of milling operation. New over-wireline packers and completion strings therefore need to be developed.
Disclosure of Invention
The invention overcomes the defects in the prior art, the existing cable-passing packer cannot meet the requirement of intelligent well completion, and the existing cable-passing packer and the well completion pipe string thereof cannot be recycled after being used for a long time, so that the operation efficiency is seriously influenced.
The purpose of the invention is realized by the following technical scheme.
A hydraulic pipeline setting type cable-passing packer comprises an upper joint, a central pipe, a connecting sleeve, an upper gauge ring, a rubber cylinder, a lower gauge ring, an upper cone, a slip, a lower cone and a retaining ring,
the inner wall of the tail end of the upper joint is in threaded connection with the outer wall of the head end of the central pipe, a pressure transmission hole penetrating through the upper joint is formed in the inner wall of the upper joint, a cavity is formed between the inner wall of the lower portion of the upper joint and the upper portion of the outer wall of the central pipe, a piston is arranged in the cavity in a sliding mode, the connecting sleeve is arranged on the central pipe at the tail end of the cavity, a locking ring is further arranged between the inner wall of the connecting sleeve and the outer wall of the upper joint, the upper gauge ring, the rubber cylinder and the lower gauge ring are sequentially arranged on the central pipe below the connecting sleeve from top to bottom, the upper cone, the slip and the lower cone are sequentially arranged on the central pipe below the lower gauge ring from top to bottom, a clamping spring is arranged between the lower gauge ring and the upper cone, and the blocking ring is arranged at the tail end of the central pipe.
And a connecting threaded hole, a cable through hole, an oil pipe threaded hole and a vent valve mounting threaded hole are respectively formed in the upper joint, the connecting threaded hole is communicated with the pressure transmitting hole, the connecting threaded hole is used for connecting a hydraulic pipeline of a cable packer, the oil pipe threaded hole is used for connecting the tail end of the middle oil pipe, and the vent valve mounting threaded hole is used for mounting a vent valve.
And a hydraulic anchor is arranged on the outer wall of the upper joint, a spring is arranged in the hydraulic anchor, and the spring is fixed on the outer wall of the upper joint by utilizing a pressing plate and a screw.
The connecting sleeve and the upper joint are connected through a setting starting pin.
The lock ring is connected with the connecting sleeve through an anti-rotation pin.
The upper cone is connected with the central pipe through a slip setting starting pin.
The lower cone is connected with the central tube through an unsealing pin.
The outside of slips is provided with the slips cage, the slips cage pass through the shear pin with the slips links to each other the inner wall of slips cage with still be provided with the slips spring between the outer wall of slips.
And the inner wall of the locking ring and the outer wall of the central tube are provided with matched saw-tooth-shaped threads so as to achieve the aim of only allowing the locking ring to move downwards along the outer wall of the central tube.
A well completion pipe string utilizing a hydraulic pipeline setting type cable-passing packer comprises an upper oil pipe, a downhole safety valve, a middle oil pipe, an air release valve, a hydraulic pipeline setting type cable-passing packer and a lower oil pipe,
the tail end of the upper oil pipe is connected with the head end of the underground safety valve, the tail end of the underground safety valve is connected with the head end of the hydraulic pipeline setting type cable-passing packer through the middle oil pipe, the head end of the hydraulic pipeline setting type cable-passing packer is also provided with the air release valve, the tail end of the hydraulic pipeline setting type cable-passing packer is connected with the head end of the lower oil pipe, the ground hydraulic control system is connected with the underground safety valve through an underground safety valve hydraulic pipeline, the air release valve hydraulic pipeline is led out from the underground safety valve hydraulic pipeline through an upper three-way joint, the air release valve hydraulic pipeline is connected with the air release valve, a cable packer hydraulic pipeline is led out from the air release valve hydraulic pipeline through a lower three-way joint, and the hydraulic pipeline of the cable-passing packer is connected with the hydraulic pipeline setting type cable-passing packer.
The use method of the completion string of the hydraulic pipeline setting type cable-passing packer comprises the following steps:
step 1, a completion pipe string of a setting type cable-passing packer utilizing a hydraulic pipeline is lowered to a designed position, a ground hydraulic system pressurizes a hydraulic pipeline of a downhole safety valve, namely hydraulic oil is injected, the pressure is transmitted to a pressure transmission hole through an upper three-way joint, a gas release valve hydraulic pipeline, a lower three-way joint and a hydraulic pipeline of the cable packer in sequence, the hydraulic oil enters a hydraulic cavity formed by an upper joint, a piston and a central pipe from the pressure transmission hole on the upper joint, a setting starting pin is cut off after certain pressure is reached, an upper gauge ring descends to compress a rubber cylinder, an upper cone is pushed to descend to cut off a slip setting starting pin, the upper cone pushes the slip to a lower cone, then the cutting pin is cut off, the slip opens to bite a sleeve under the action of an inclined plane, the setting force is completely transmitted to a deblocking pin, a lock ring scratches from the central pipe in the process of a descending connection sleeve, and a lock ring and the central pipe are provided with sawtooth-shaped threads, only allowing the locking ring to move downwards along the outer wall of the central tube, continuously pressurizing to the design pressure and stabilizing the pressure for a period of time, completely setting the rubber sleeve and the slips, unloading the pressure of the oil tube, and keeping the setting state of the hydraulic pipeline setting type cable-passing packer under the action of the locking ring;
when the completion pipe string of the hydraulic pipeline setting type cable passing packer cannot be unset, the ground hydraulic system pressurizes the hydraulic pipeline of the underground safety valve, the pressure is transmitted to the unset pin, then the completion pipe string of the hydraulic pipeline setting type cable passing packer is lifted, the hydraulic pipeline setting type cable passing packer is unset, and the completion pipe string of the hydraulic pipeline setting type cable passing packer is lifted.
The invention has the beneficial effects that: the hydraulic pipeline is connected to the upper joint of the hydraulic pipeline setting type cable packer, and ground equipment applies hydraulic pressure to the hydraulic pipeline to set the cable packer, so that the operation is convenient, the operation of throwing and taking a packer in the original operation mode is omitted, and the time and the cost are saved;
the hydraulic pipeline for setting the cable packer is connected from the hydraulic pipeline of the underground safety valve/air release valve connected to the cable packer, and shares a main hydraulic pipeline with the underground safety valve/air release valve, so that the increase of the hydraulic pipeline is avoided;
when the hydraulic pipeline setting type through-cable packer and the completion string thereof are recovered, larger pressure can be applied to the hydraulic pipeline, and the packer can be conveniently unsealed.
Drawings
FIG. 1 is a schematic diagram of a completion string utilizing a hydraulic line-set over-the-cable packer in accordance with the present invention;
FIG. 2 is a schematic structural diagram of a hydraulic pipeline setting type through-cable packer in the invention, wherein (a) is a schematic overall sectional structure, (b) is a schematic overall external structure, (c) is a top view of the diagram (a), and (d) is a schematic sectional structure of A-A in the diagram (b);
FIG. 3 is a schematic structural view of the upper joint of the present invention, wherein (a) is a schematic structural view in a whole sectional view, and (b) is a schematic structural view of the upper joint of the present invention as seen from left to right in FIG. a;
in the figure: 1 is an upper oil pipe, 2 is a hydraulic pipeline of a downhole safety valve, 3 is a downhole safety valve, 4 is a gas release valve hydraulic pipeline, 5 is a middle oil pipe, 6 is a gas release valve, 7 is a hydraulic pipeline passing a cable packer, 8 is a hydraulic pipeline setting type cable passing packer, 9 is a lower oil pipe, 10 is an upper three-way joint, 11 is a lower three-way joint, 12 is an upper joint, 13 is a piston, 14 is a central pipe, 15 is a setting starting pin, 16 is a connecting sleeve, 17 is a locking ring, 18 is an upper gauge ring, 19 is a rubber barrel, 20 is a slip setting starting pin, 21 is a lower gauge ring, 22 is an upper cone, 23 is a snap spring, 24 is a slip, 25 is a slip spring, 26 is a slip cage, 27 is a guide pin, 28 is a lower cone, 29 is an anti-rotation pin, 30 is a hydraulic anchor, 31 is a pressing plate, 32 is a screw, 33 is a spring, 34 is a pin unsetting, 35 is a retaining ring, 36 is a shearing pin, 37 is a connecting threaded hole, 38 is a pressure transmission hole, 39 is a cable through hole, 40 is an oil pipe threaded hole, and 41 is a vent valve mounting threaded hole.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example one
The hydraulic pipeline setting type cable-passing packer comprises an upper joint 12, a central pipe 14, a connecting sleeve 16, an upper gauge ring 17, a rubber cylinder 19, a lower gauge ring 21, an upper cone 22, a slip 24, a lower cone 28 and a retaining ring 35,
the inner wall of the tail end of the upper joint 12 is in threaded connection with the outer wall of the head end of the central tube 14, a pressure transmission hole 38 penetrating through the upper joint 12 is formed in the inner wall of the upper joint 12, a cavity is formed between the inner wall of the lower portion of the upper joint 12 and the upper portion of the outer wall of the central tube 14, a piston 13 is arranged in the cavity in a sliding mode, the central tube 14 at the tail end of the cavity is provided with a connecting sleeve 16, a locking ring 17 is further arranged between the inner wall of the connecting sleeve 16 and the outer wall of the upper joint 12, an upper gauge ring 17, a rubber sleeve 19 and a lower gauge ring 21 are sequentially arranged on the central tube 14 below the connecting sleeve 16 from top to bottom, an upper cone 22, a slip 24 and a lower cone 28 are sequentially arranged on the central tube 14 below the lower gauge ring 21 from top to bottom, a snap spring 23 is arranged between the lower gauge ring 21 and the upper cone 22, and the blocking ring 34 is installed at the tail end of the central tube 14.
The upper joint 12 is internally provided with a connecting threaded hole 37, a cable through hole 39, an oil pipe threaded hole 40 and a deflation valve mounting threaded hole 41 respectively, the connecting threaded hole 37 is communicated with a pressure transmitting hole 38, the connecting threaded hole 37 is used for connecting a cable packer hydraulic pipeline 7, the oil pipe threaded hole 40 is used for connecting the tail end of a middle oil pipe 5, and the deflation valve mounting threaded hole 41 is used for mounting a deflation valve 6.
A hydraulic anchor 30 is installed on the outer wall of the upper joint 12, a spring 33 is installed in the hydraulic anchor, and the spring 33 is fixed on the outer wall of the upper joint 12 by a pressing plate 31 and a screw 32.
Example two
On the basis of the first embodiment, the connecting sleeve 16 and the upper joint 12 are connected by a setting start pin 15.
The locking ring 17 and the coupling sleeve 16 are connected by an anti-rotation pin 29.
The upper cone 22 is connected to the base pipe 14 by a slip setting start pin 20.
A slip cage 26 is arranged outside the slips 24, the slip cage 26 is connected with the slips 24 through a shearing pin 36, and a slip spring 25 is arranged between the inner wall of the slip cage 26 and the outer wall of the slips 24.
The inner wall of the locking ring 17 and the outer wall of the center tube 14 are formed with matching serrated threads for the purpose of allowing only downward movement of the locking ring 17 along the outer wall of the center tube 14.
EXAMPLE III
On the basis of the second embodiment, the completion string for setting the cable packer by using the hydraulic pipeline comprises an upper oil pipe 1, a downhole safety valve 3, a middle oil pipe 5, a deflation valve 6, a hydraulic pipeline setting type cable packer 8 and a lower oil pipe 9,
the tail end of upper portion oil pipe 1 links to each other with the head end of downhole safety valve 3, the tail end of downhole safety valve 3 links to each other through middle part oil pipe 5 and the head end that cable packer 8 was crossed to hydraulic pressure pipeline setting formula, the head end of cable packer 8 is still set up bleed valve 6 at hydraulic pressure pipeline setting formula, the tail end that cable packer 8 was crossed to hydraulic pressure pipeline setting formula links to each other with the head end of lower part oil pipe 9, ground hydraulic control system links to each other with downhole safety valve 3 through downhole safety valve hydraulic pressure pipeline 2, draw out bleed valve hydraulic pressure pipeline 4 through upper portion three way connection 10 on the hydraulic pressure pipeline 2 of downhole safety valve, bleed valve hydraulic pressure pipeline 4 links to each other with bleed valve 6, draw out cable packer hydraulic pressure pipeline 7 through lower part three way connection 11 on the hydraulic pressure pipeline 4 of bleed valve, it links to each other to pass cable packer hydraulic pressure pipeline 7 and hydraulic pressure pipeline setting formula and cross cable packer 8.
Example four
The use method of the completion string of the hydraulic pipeline setting type cable-passing packer comprises the following steps:
step 1, lowering a completion string of a setting type cable-passing packer by using a hydraulic pipeline to a designed position, pressurizing a hydraulic pipeline 2 of a downhole safety valve by a ground hydraulic system, namely injecting hydraulic oil, wherein the pressure is transmitted to a pressure transmission hole 37 through an upper three-way joint 10, a deflation valve hydraulic pipeline 4, a lower three-way joint 11 and a cable packer hydraulic pipeline 7 in sequence, the hydraulic oil enters a hydraulic cavity formed by an upper joint 12, a piston 13 and a central pipe 14 from the pressure transmission hole 38 on the upper joint 12, after reaching a certain pressure, a setting starting pin 15 is cut off, an upper gauge ring 18 descends to a compression rubber barrel 19, an upper cone 23 is pushed to descend to cut a slip setting starting pin 20, the slip 24 is pushed to a lower cone 28 by the upper cone 23, then the cutting pin 36 is cut off, the slip 24 opens to bite the casing under the action of an inclined plane, the setting force is completely transmitted to an unsetting pin 24, and in the process of descending a connecting sleeve 16, the locking ring 17 is scratched from the central tube 14, the locking ring 17 and the central tube 14 are provided with sawtooth-shaped threads, the locking ring 17 is only allowed to move downwards along the outer wall of the central tube 14, the pressure is continuously increased to the design pressure and stabilized for a period of time, the rubber sleeve 19 and the slips 24 are completely set, the pressure of the oil tube is removed, and the hydraulic pipeline setting type cable-passing packer 8 is kept in a setting state under the action of the locking ring 17;
when the completion string of the hydraulic pipeline setting type cable-passing packer cannot be used for unsetting the hydraulic pipeline setting type cable-passing packer 8 by directly lifting, the ground hydraulic system pressurizes the hydraulic pipeline 2 of the downhole safety valve, the pressure is transmitted to the unsetting pin 34, then the completion string of the hydraulic pipeline setting type cable-passing packer is lifted, the hydraulic pipeline setting type cable-passing packer 8 is unset, and the completion string of the hydraulic pipeline setting type cable-passing packer is lifted.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. Hydraulic pressure pipeline setting type cable packer, its characterized in that: comprises an upper joint, a central pipe, a connecting sleeve, an upper gauge ring, a rubber cylinder, a lower gauge ring, an upper cone, a slip, a lower cone and a retaining ring,
the inner wall of the tail end of the upper joint is in threaded connection with the outer wall of the head end of the central pipe, a pressure transmission hole penetrating through the upper joint is formed in the inner wall of the upper joint, a cavity is formed between the inner wall of the lower portion of the upper joint and the upper portion of the outer wall of the central pipe, a piston is arranged in the cavity in a sliding mode, the connecting sleeve is arranged on the central pipe at the tail end of the cavity, a locking ring is further arranged between the inner wall of the connecting sleeve and the outer wall of the upper joint, the upper gauge ring, the rubber cylinder and the lower gauge ring are sequentially arranged on the central pipe below the connecting sleeve from top to bottom, the upper cone, the slip and the lower cone are sequentially arranged on the central pipe below the lower gauge ring from top to bottom, a clamping spring is arranged between the lower gauge ring and the upper cone, and the blocking ring is arranged at the tail end of the central pipe.
2. The hydraulic line set through-cable packer of claim 1, wherein: and a connecting threaded hole, a cable through hole, an oil pipe threaded hole and a vent valve mounting threaded hole are respectively formed in the upper joint, the connecting threaded hole is communicated with the pressure transmitting hole, the connecting threaded hole is used for connecting a hydraulic pipeline of a cable packer, the oil pipe threaded hole is used for connecting the tail end of the middle oil pipe, and the vent valve mounting threaded hole is used for mounting a vent valve.
3. The hydraulic line set through-cable packer of claim 1, wherein: and a hydraulic anchor is arranged on the outer wall of the upper joint, a spring is arranged in the hydraulic anchor, and the spring is fixed on the outer wall of the upper joint by utilizing a pressing plate and a screw.
4. The hydraulic line set through-cable packer of claim 1, wherein: the connecting sleeve is connected with the upper joint through a setting starting pin; the lock ring is connected with the connecting sleeve through an anti-rotation pin.
5. The hydraulic line set through-cable packer of claim 1, wherein: the upper cone is connected with the central pipe through a slip setting starting pin; the lower cone is connected with the central tube through an unsealing pin.
6. The hydraulic line set through-cable packer of claim 1, wherein: the outside of slips is provided with the slips cage, the slips cage pass through the shear pin with the slips links to each other the inner wall of slips cage with still be provided with the slips spring between the outer wall of slips.
7. The hydraulic line set through-cable packer of claim 1, wherein: and the inner wall of the locking ring and the outer wall of the central tube are provided with matched saw-tooth-shaped threads so as to achieve the aim of only allowing the locking ring to move downwards along the outer wall of the central tube.
8. A completion string set through a wireline packer using a hydraulic line according to any of claims 1-7, wherein: comprises an upper oil pipe, a downhole safety valve, a middle oil pipe, an air release valve, a hydraulic pipeline setting type cable-passing packer and a lower oil pipe,
the tail end of the upper oil pipe is connected with the head end of the underground safety valve, the tail end of the underground safety valve is connected with the head end of the hydraulic pipeline setting type cable-passing packer through the middle oil pipe, the head end of the hydraulic pipeline setting type cable-passing packer is also provided with the air release valve, the tail end of the hydraulic pipeline setting type cable-passing packer is connected with the head end of the lower oil pipe, the ground hydraulic control system is connected with the underground safety valve through an underground safety valve hydraulic pipeline, the air release valve hydraulic pipeline is led out from the underground safety valve hydraulic pipeline through an upper three-way joint, the air release valve hydraulic pipeline is connected with the air release valve, a cable packer hydraulic pipeline is led out from the air release valve hydraulic pipeline through a lower three-way joint, and the hydraulic pipeline of the cable-passing packer is connected with the hydraulic pipeline setting type cable-passing packer.
9. The method of using a completion string set through-the-cable packer of claim 8, wherein: the method comprises the following steps:
step 1, a completion pipe string of a setting type cable-passing packer utilizing a hydraulic pipeline is lowered to a designed position, a ground hydraulic system pressurizes a hydraulic pipeline of a downhole safety valve, namely hydraulic oil is injected, the pressure is transmitted to a pressure transmission hole through an upper three-way joint, a gas release valve hydraulic pipeline, a lower three-way joint and a hydraulic pipeline of the cable packer in sequence, the hydraulic oil enters a hydraulic cavity formed by an upper joint, a piston and a central pipe from the pressure transmission hole on the upper joint, a setting starting pin is cut off after certain pressure is reached, an upper gauge ring descends to compress a rubber cylinder, an upper cone is pushed to descend to cut off a slip setting starting pin, the upper cone pushes the slip to a lower cone, then the cutting pin is cut off, the slip opens to bite a sleeve under the action of an inclined plane, the setting force is completely transmitted to a deblocking pin, a lock ring scratches from the central pipe in the process of a descending connection sleeve, and a lock ring and the central pipe are provided with sawtooth-shaped threads, only allowing the locking ring to move downwards along the outer wall of the central tube, continuously pressurizing to the design pressure and stabilizing the pressure for a period of time, completely setting the rubber sleeve and the slips, unloading the pressure of the oil tube, and keeping the setting state of the hydraulic pipeline setting type cable-passing packer under the action of the locking ring;
step 2, a deflation valve is installed on the upper part of the hydraulic pipeline setting type cable passing packer, when the deflation valve is closed, the lower part of the hydraulic pipeline setting type cable passing packer is a closed space, annular pressure is transmitted to the hydraulic pipeline setting type cable passing packer to cause the hydraulic pipeline setting type cable passing packer to have a trend of moving upwards, the trend is the same when the hydraulic pipeline setting type cable passing packer is unsealed, the annular pressure is completely transferred to a unsealing pin, when the deflation valve is closed, the underground pressure enables a hydraulic anchor to be opened to bite into a sleeve, and the hydraulic pipeline setting type cable passing packer is prevented from being unsealed in advance;
step 3, when the completion string of the hydraulic pipeline setting type cable-passing packer needs to be pulled out, the completion string of the hydraulic pipeline setting type cable-passing packer is directly lifted upwards, the central pipe of the hydraulic pipeline setting type cable-passing packer moves upwards, the lower cone is fixed due to the fact that the slip bites the sleeve, the deblocking pin between the central pipe and the lower cone is cut off, the lower cone, the slip cage, the upper cone and the piston move downwards relative to the central pipe, the slip is retracted under the action of the slip spring, the hydraulic pipeline setting type cable-passing packer is deblocked, and the completion string of the hydraulic pipeline setting type cable-passing packer can be pulled out to the ground;
when the completion pipe string of the hydraulic pipeline setting type cable passing packer cannot be unset, the ground hydraulic system pressurizes the hydraulic pipeline of the underground safety valve, the pressure is transmitted to the unset pin, then the completion pipe string of the hydraulic pipeline setting type cable passing packer is lifted, the hydraulic pipeline setting type cable passing packer is unset, and the completion pipe string of the hydraulic pipeline setting type cable passing packer is lifted.
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| CN202111182753.5A CN114458226B (en) | 2021-10-11 | 2021-10-11 | Hydraulic pipeline setting type cable passing packer and well completion pipe string using same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506748A (en) * | 2022-09-26 | 2022-12-23 | 中海石油(中国)有限公司 | Packer setting energy storage device and using method thereof |
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| CN113250647A (en) * | 2021-07-19 | 2021-08-13 | 中国石油集团川庆钻探工程有限公司 | Suspension well completion integrated packer and well completion pipe string |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115506748A (en) * | 2022-09-26 | 2022-12-23 | 中海石油(中国)有限公司 | Packer setting energy storage device and using method thereof |
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| CN114458226B (en) | 2023-10-31 |
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