CN109356548A - A kind of downhole hardware and operation method suitable for snubbing serving - Google Patents
A kind of downhole hardware and operation method suitable for snubbing serving Download PDFInfo
- Publication number
- CN109356548A CN109356548A CN201811305839.0A CN201811305839A CN109356548A CN 109356548 A CN109356548 A CN 109356548A CN 201811305839 A CN201811305839 A CN 201811305839A CN 109356548 A CN109356548 A CN 109356548A
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- sleeve
- center tube
- slips
- cone
- shear pin
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012856 packing Methods 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 241000935974 Paralichthys dentatus Species 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000002195 soluble material Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 238000002627 tracheal intubation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
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)
Abstract
The invention discloses a kind of downhole hardware suitable for snubbing serving and operation methods, downhole hardware includes upper center tube, squeeze sleeve, locking member, upper slips, upper cone, packing element, lower cone, lower slips, sleeve and lower center tube, wherein extruded sleeve wound packages fits over the top of upper center tube, locking member, upper slips, upper cone, packing element, lower cone and lower slips are sequentially arranged at the lower section for squeezing sleeve, locking member, upper slips, upper cone, packing element, lower cone and lower slips are set on upper center tube, cylinder is set in the lower end of upper center tube, the middle part of sleeve is equipped with outer flowing groove, its method are as follows: step 1: setting tool is to predetermined position；Step 2: setting-giving up；Step 3: testing envelope；Step 4: removing fracture well head；Step 5: installation is recovered the oil, gas tree；Step 6: establishing flow channel.The utility model has the advantages that improve production efficiency saves expense again, it is practical.
Description
Technical field
The present invention relates to a kind of downhole hardware and operation method, in particular to a kind of underground suitable for snubbing serving fills
It sets and operation method.
Background technique
Currently, hydraulic fracturing is required operation measure in the unconventional gas reservoirs development process such as tight gas, shale gas.
In order to meet the large-scale reservoir reconstruction of huge discharge, reforming technology often uses casing fracturing.In view of casing fluid-carrying capability is weak, pressure break
The lesser oil pipe of latus rectum in tripping in is needed after construction, is met gas well and is taken liquid and steady production requirement.Lower production after pressure at present
The usual way of tubing string has three classes: first is that using operation device under pressure tripping in routine oil pipe；Second is that with pressure using Operation Tubing Aggregate
Tripping in coiled tubing；Third is that using routine work mode, well head and lower oil pipe are changed in first kill-job.First two mode is high-efficient, corresponding
It is costly, the expense of routine work mode is low but the period is long and easily damages to reservoir.About no killing well lower tubular column
Method is also being constantly progressive, and a kind of shale gas well no killing well is not with pressure to remove flow string and construction method (number of patent application
201610124745.8) it proposes a kind of mode of preset intubation, realizes the separation of cannula structures two-way pressure, reach not with pressure
The purpose of lower flow string.This intubation way is affected by hole deviation, limits the application in horizontal well.Another side
Formula is tripping in temporary blocking type big orifice bridge plug (temporary blocking type big orifice bridge plug and its production tube tripping in method, number of patent application
201611132299.1), separate the pressure of temporary blocking type bridge plug or more, in the case where realizing bridge plug top no killing well, complete production
After tubing string, by the way of suppressing, flow channel is got through, realizes the production of oil gas.What this temporary blocking type big orifice bridge plug used
One-way slip, can only one-way bearing pressure, after being set there are bridge plug, by the risk for pushing up deblocking on bottom pressure；It uses and suppresses simultaneously
The mode of plug establishes oil gas flow channel, and there are certain well control safeties.One side blanking plug is according to conventional material, after destroying
Shaft bottom is fallen into impact later period operation；On the other hand according to soluble material, in tool lower going-into-well, dissolution time is difficult to standard
It really controls, Premature disintegration easily causes well control risk.
Summary of the invention
It is mentioned the purpose of the present invention is to solve presently relevant oil well problems present in pressing crack construction process
A kind of downhole hardware and operation method suitable for snubbing serving supplied.
Downhole hardware provided by the invention suitable for snubbing serving include upper center tube, squeeze sleeve, locking member,
Upper slips, upper cone, packing element, lower cone, lower slips, sleeve and lower center tube, wherein extruded sleeve wound packages fits over upper center tube
Top, locking member, upper slips, upper cone, packing element, lower cone and lower slips be sequentially arranged at squeeze sleeve lower section, locking member, on
Slips, upper cone, packing element, lower cone and lower slips are set on upper center tube, and cylinder is set in the lower end of upper center tube, sleeve
Middle part be equipped with outer flowing groove, lower center tube is plugged in sleeve, and the lower part of lower center tube is equipped with guide shoe, and the top of guide shoe plugs
In the lower end of sleeve, interior flowing groove is equipped between the lower end and guide shoe upper end of lower center tube.
The top of upper center tube is connected by discharging ring with setting tool.
It squeezes sleeve to be fixed on the outer wall of upper center tube by the first shear pin, upper cone passes through the second shear pin
It is fixed on the outer wall of upper center tube, lower cone is fixed on the outer wall of upper center tube by third shear pin, sleeve top
It is fixed on the outer wall of upper center tube by anti-rotation pin, the lower end of sleeve is fixed on the outer wall of lower center tube by fixing pin
On, the intensity of anti-rotation pin is greater than the intensity of the first shear pin, the second shear pin and third shear pin.
Limiting device and sealing ring, sleeve lower end are equipped between the top of lower center tube, bottom outer wall and sleeve inner
Inner wall and guide shoe outer wall between be equipped with limiting device and sealing ring.
Blind plate is equipped in the guide shoe inner cavity of lower center tube lower part, blind plate is made of soluble material.
Operation method provided by the invention suitable for snubbing serving, method are as described below:
Step 1: by downhole hardware and setting work using the existing cable in well site or coiled tubing after casing fracturing
Tool is sent to predetermined position after connecting；
Step 2: setting thrust to setting tool application in such a way that cable igniting or coiled tubing are suppressed, thrust is big
In the intensity of the first shear pin, the second shear pin and third shear pin, thrust pushes extruded sleeve in squeezing sleeve
Cylinder downlink, cuts the first shear pin, the second shear pin and third shear pin, squeezes sleeve downlink and drives under upper slips
Row, opening anchor fluke carry out extruding packing element, and lower cone downlink is also driven while squeezing packing element, lower slips are opened, with downlink pressure
Power is continuously increased, and upper slips and lower slips will be fixed on internal surface of sleeve pipe, and packing element tightly insulates bottom pressure, while underground fills
The disengagement by release ring realization and setting tool is set, setting-giving up for downhole hardware is completed；
Step 3: testing envelope, after setting tool is proposed well head, wellhead production valve pressure release is opened, controlled implementation is put
Spray, if well head pressure falls to rapidly zero, and well head stop-spraying, then illustrates that downhole tool is set well；
Step 4: removing fracture well head is changed to routine work well head, wireline operation equipment or continuous oil pipe device are removed,
Conventional well workover/drifting operating equipment is installed；
Step 5: using conventional well workover/drifting operating equipment, after flow string is lowered into predetermined position by design requirement
Installation oil recovery, gas tree；
Step 6: slowly being suppressed from ground by oil recovery, gas tree, after installation wellhead tree, gas tree when pressure reaches fixed
After the shear strength of pin, fixing pin is cut, and after lower center tube goes downwards to limiting device, exposes interior flowing groove and outer flowing
Slot establishes flow channel.
Beneficial effects of the present invention:
Downhole hardware provided by the invention, structure is simple, compact, can efficiently use the existing equipment (nothing in well site after pressure break
Resettlement, the installation and adjustment of equipment are needed, artificial and operating cost is saved), realize setting-giving up for packer.It is filled using underground
It sets, separates bottom pressure, realize the tripping in of the replacement, flow string of completing wellhead equipment in the case where no killing well, well head peace
Dress solves difficult routine work bring kill-job, length duty cycle and reservoir damage, had not only improved production efficiency but also saving expense
With practical.
Detailed description of the invention
Fig. 1 device overall structure diagram of the present invention.
1, upper center tube 2, extruding sleeve 3, locking member 4, upper slips 5, upper cone
6, packing element 7, lower cone 8, lower slips 9, sleeve 10, lower center tube
12, outer flowing groove 13, guide shoe 14, interior flowing groove 15, release ring
16, the first shear pin 17, the second shear pin 18, third shear pin
19, anti-rotation pin 20, fixing pin 21, limiting device 22, sealing ring 23, blind plate.
Specific embodiment
It please refers to shown in Fig. 1:
Downhole hardware provided by the invention suitable for snubbing serving includes upper center tube 1, squeezes sleeve 2, locking
Part 3, upper slips 4, upper cone 5, packing element 6, lower cone 7, lower slips 8, sleeve 9 and lower center tube 10 assemble wherein squeezing sleeve 2
On the top of upper center tube 1, locking member 3, upper slips 4, upper cone 5, packing element 6, lower cone 7 and lower slips 8 are sequentially arranged at extruding
The lower section of sleeve 2, locking member 3, upper slips 4, upper cone 5, packing element 6, lower cone 7 and lower slips 8 are set in upper center tube 1
On, sleeve 9 is set in the lower end of upper center tube 1, and the middle part of sleeve 9 is equipped with outer flowing groove 12, and lower center tube 10 is plugged in sleeve 9
Interior, the lower part of lower center tube 10 is equipped with guide shoe 13, and the top of guide shoe 13 is plugged in the lower end of sleeve 9, the lower end of lower center tube 10
Interior flowing groove is equipped between 13 upper end of guide shoe.
The top of upper center tube 1 is connected by discharging ring 15 with setting tool.
It squeezes sleeve 2 to be fixed on the outer wall of upper center tube 1 by the first shear pin 16, upper cone 5 is cut by second
It cuts pin 17 to be fixed on the outer wall of upper center tube 1, lower cone 7 is fixed on the outer of upper center tube 1 by third shear pin 18
On wall, the top of sleeve 9 is fixed on the outer wall of upper center tube 1 by anti-rotation pin 19, and the lower end of sleeve 9 passes through fixing pin
20 are fixed on the outer wall of lower center tube 10, and the intensity of anti-rotation pin 19 is greater than the first shear pin 16, the second shear pin 17
With the intensity of third shear pin 18.
Limiting device 21 and sealing ring 22, set are equipped between the top of lower center tube 10, bottom outer wall and the inner wall of sleeve 9
Limiting device 21 and sealing ring 22 are equipped between 13 outer wall of inner wall and guide shoe of 9 lower ends of cylinder.
Blind plate 23 is equipped in 13 inner cavity of guide shoe of 10 lower part of lower center tube, blind plate 23 is made of soluble material.
Operation method provided by the invention suitable for snubbing serving, method are as described below:
Step 1: by downhole hardware and setting work using the existing cable in well site or coiled tubing after casing fracturing
Tool is sent to predetermined position after connecting；
Step 2: setting thrust to setting tool application in such a way that cable igniting or coiled tubing are suppressed, thrust is big
In the intensity of the first shear pin 16, the second shear pin 17 and third shear pin 18, thrust is pushed away in squeezing sleeve 2
It is dynamic to squeeze 2 downlink of sleeve, the first shear pin 16, the second shear pin 17 and third shear pin 18 are cut, is squeezed under sleeve 2
Row drives 4 downlink of upper slips, opening anchor fluke to carry out squeezing packing element 6, also drives 7 downlink of lower cone while squeezing packing element 6, opens
Lower slips 8, with being continuously increased for downstream pressure, upper slips 4 and lower slips 8 will be fixed on internal surface of sleeve pipe, and packing element 6 tightly seals
Every bottom pressure, while downhole hardware realizes the disengagement with setting tool by release ring 15, completes setting-losing for downhole hardware
Hand；
Step 3: testing envelope, after setting tool is proposed well head, wellhead production valve pressure release is opened, controlled implementation is put
Spray, if well head pressure falls to rapidly zero, and well head stop-spraying, then illustrates that downhole tool is set well；
Step 4: removing fracture well head is changed to routine work well head, wireline operation equipment or continuous oil pipe device are removed,
Conventional well workover/drifting operating equipment is installed；
Step 5: using conventional well workover/drifting operating equipment, after flow string is lowered into predetermined position by design requirement
Installation oil recovery, gas tree；
Step 6: slowly being suppressed from ground by oil recovery, gas tree, after installation wellhead tree, gas tree when pressure reaches fixed
After the shear strength of pin 20, fixing pin 20 is cut, and after lower center tube 10 goes downwards to limiting device, exposes 14 He of interior flowing groove
Outer flowing groove 12, establishes flow channel.
Claims (5)
1. a kind of downhole hardware suitable for snubbing serving, it is characterised in that: include upper center tube, squeeze sleeve, locking
Part, upper slips, upper cone, packing element, lower cone, lower slips, sleeve and lower center tube, wherein extruded sleeve wound packages fits over upper center tube
Top, locking member, upper slips, upper cone, packing element, lower cone and lower slips be sequentially arranged at squeeze sleeve lower section, locking member,
Upper slips, upper cone, packing element, lower cone and lower slips are set on upper center tube, and cylinder is set in the lower end of upper center tube, set
The middle part of cylinder is equipped with outer flowing groove, and lower center tube is plugged in sleeve, and the lower part of lower center tube is equipped with guide shoe, and the top of guide shoe is inserted
It is located at the lower end of sleeve, interior flowing groove is equipped between the lower end and guide shoe upper end of lower center tube.
2. a kind of downhole hardware suitable for snubbing serving according to claim 1, it is characterised in that: it is described it is upper in
The top of heart pipe is connected by discharging ring with setting tool.
3. a kind of downhole hardware suitable for snubbing serving according to claim 1, it is characterised in that: the extruding
Sleeve is fixed on the outer wall of upper center tube by the first shear pin, and upper cone is fixed on upper center by the second shear pin
On the outer wall of pipe, lower cone is fixed on the outer wall of upper center tube by third shear pin, and the top of sleeve passes through stop pin
Nail is fixed on the outer wall of upper center tube, and the lower end of sleeve is fixed on the outer wall of lower center tube by fixing pin, stop pin
The intensity of nail is greater than the intensity of the first shear pin, the second shear pin and third shear pin.
4. a kind of downhole hardware suitable for snubbing serving according to claim 1, it is characterised in that: it is described it is lower in
Limiting device and sealing ring, the inner wall and guide shoe of sleeve lower end are equipped between the top of heart pipe, bottom outer wall and sleeve inner
Limiting device and sealing ring are equipped between outer wall.
5. a kind of operation method suitable for snubbing serving, it is characterised in that: its method is as described below:
Step 1: downhole hardware and setting tool are connected using the existing cable in well site or coiled tubing after casing fracturing
Predetermined position is sent to after connecting；
Step 2: set thrust to setting tool application in such a way that cable igniting or coiled tubing are suppressed, thrust is greater than the
The intensity of one shear pin, the second shear pin and third shear pin, thrust are pushed and are squeezed under sleeve in squeezing sleeve
Row cuts the first shear pin, the second shear pin and third shear pin, squeezes sleeve downlink and drives upper slips downlink, opens
It opens anchor fluke and carries out extruding packing element, lower cone downlink is also driven while squeezing packing element, open lower slips, not with downstream pressure
Disconnected to increase, upper slips and lower slips will be fixed on internal surface of sleeve pipe, and packing element tightly insulates bottom pressure, while downhole hardware passes through
The disengagement for discharging ring realization and setting tool, completes setting-giving up for downhole hardware；
Step 3: testing envelope, after setting tool is proposed well head, wellhead production valve pressure release, controlled implementation open flow are opened, if
Well head pressure falls to rapidly zero, and well head stop-spraying, then illustrates that downhole tool is set well；
Step 4: removing fracture well head is changed to routine work well head, wireline operation equipment or continuous oil pipe device, installation are removed
Conventional well workover/drifting operating equipment；
Step 5: being installed after flow string is lowered into predetermined position by design requirement using conventional well workover/drifting operating equipment
It recovers the oil, gas tree；
Step 6: slowly being suppressed from ground by oil recovery, gas tree, after installation wellhead tree, gas tree when pressure reaches fixing pin
Shear strength after, fixing pin is cut, after lower center tube goes downwards to limiting device, expose in flowing groove and outer flowing groove, build
Vertical flow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305839.0A CN109356548B (en) | 2018-11-05 | 2018-11-05 | Underground device suitable for snubbing operation and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305839.0A CN109356548B (en) | 2018-11-05 | 2018-11-05 | Underground device suitable for snubbing operation and production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109356548A true CN109356548A (en) | 2019-02-19 |
| CN109356548B CN109356548B (en) | 2021-08-31 |
Family
ID=65344132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811305839.0A Active CN109356548B (en) | 2018-11-05 | 2018-11-05 | Underground device suitable for snubbing operation and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356548B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100263876A1 (en) * | 2009-04-21 | 2010-10-21 | Frazier W Lynn | Combination down hole tool |
| CN205532458U (en) * | 2015-12-31 | 2016-08-31 | 中国石油天然气股份有限公司 | Long-acting oil-separating packer for oil field |
| CN205778731U (en) * | 2016-07-11 | 2016-12-07 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of sliding sleeve switch bridging plug |
| CN207905768U (en) * | 2018-02-07 | 2018-09-25 | 中国石油集团西部钻探工程有限公司 | Retrievable hanging packer for flow string under no killing well |
-
2018
- 2018-11-05 CN CN201811305839.0A patent/CN109356548B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100263876A1 (en) * | 2009-04-21 | 2010-10-21 | Frazier W Lynn | Combination down hole tool |
| CN205532458U (en) * | 2015-12-31 | 2016-08-31 | 中国石油天然气股份有限公司 | Long-acting oil-separating packer for oil field |
| CN205778731U (en) * | 2016-07-11 | 2016-12-07 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of sliding sleeve switch bridging plug |
| CN207905768U (en) * | 2018-02-07 | 2018-09-25 | 中国石油集团西部钻探工程有限公司 | Retrievable hanging packer for flow string under no killing well |
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| Publication number | Publication date |
|---|---|
| CN109356548B (en) | 2021-08-31 |
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