CN109252845A - A kind of solvable slide bushing assembly of separate stratum fracfturing full-bore - Google Patents
A kind of solvable slide bushing assembly of separate stratum fracfturing full-bore Download PDFInfo
- Publication number
- CN109252845A CN109252845A CN201811195177.6A CN201811195177A CN109252845A CN 109252845 A CN109252845 A CN 109252845A CN 201811195177 A CN201811195177 A CN 201811195177A CN 109252845 A CN109252845 A CN 109252845A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- solvable
- catcher
- mandrel
- bore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 238000005488 sandblasting Methods 0.000 claims abstract description 5
- 239000004636 vulcanized rubber Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000004576 sand Substances 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 14
- 238000003825 pressing Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000032798 delamination Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000007787 solid Substances 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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)
- Colloid Chemistry (AREA)
Abstract
The invention discloses a kind of solvable slide bushing assemblies of separate stratum fracfturing full-bore, including the solvable sliding sleeve of full-bore and solvable sliding sleeve mandrel catcher, the solvable sliding sleeve of full-bore includes slide cartridge housing, the solvable sliding sleeve mandrel of ball seat integral type, can dissolve ball, the solvable sliding sleeve mandrel of ball seat integral type and sliding sleeve outer cylinder are sealed by " O " type sealing ring, and it is fixed on sliding sleeve outer tube inner wall by controlling shear pin, sandblasting hole setting is opened and closed in slide cartridge sleeve side wall and by solvable sliding sleeve mandrel；The solvable sliding sleeve mandrel catcher includes target seeker, catcher outer cylinder, soluble metal sealing support ring, sliding sleeve mandrel catcher inner core, sliding sleeve mandrel catcher inner core is supported in catcher outer cylinder by soluble metal support ring, and sealed by solvable rubber seal "O"-ring, sliding sleeve mandrel catcher inner core lower end has target seeker by screwed connection.The present invention realizes full-bore liquid discharging gas producing, provides full-bore channel for work measures such as later period sand washing, test, monitoring production profiles.
Description
Technical field
The present invention relates to the untraditional reservoirs Well Completion Engineering of Oil Reservoirs such as petroleum, natural gas field, especially a kind of separate stratum fracfturing is used
The solvable slide bushing assembly of full-bore.
Background technique
It is developed with Low permeable oil and gas reservoirs and obtains good result, straight well and horizontal well stage fracturing technology have become shale
The agent technology of the unconventional resource volume increase exploitation such as gas, Low Permeability Oil/gas, coal bed gas.However it is also sent out in a large amount of site operation
Show many limitations, constrains the technology further genralrlization application.It is found by staged fracturing site operation in recent years, pressure break
The staged fracturing tool that sliding sleeve is combined with packer cannot achieve full-bore there are tubing string and restrict later period liquid discharging gas producing, test equipment
Tripping in, cannot achieve after pressure it is secondary repeat a series of problems, such as being transformed, therefore be badly in need of developing one kind can satisfy it is complete after pressure break
Latus rectum, full-bore liquid discharging gas producing, the dissolvable sliding sleeve layered fracturing pipe string that repetition reforming technology can be met, it is above many to solve
Problem.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of solvable slide bushing assembly of separate stratum fracfturing full-bore, into
Sliding sleeve mandrel sections component can voluntarily dissolve inside sand blast sliding sleeve after row pressing crack construction, the remaining undissolved part energy of sliding sleeve fuse
It is enough smoothly to fall into shaft bottom, it realizes the full-bore of entire tubing string, produces liquid for full-bore liquid discharging gas producing, later period sand washing, test, monitoring and cut open
The work measures such as face provide full-bore channel.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that: a kind of separate stratum fracfturing full-bore is solvable
Slide bushing assembly, including the solvable sliding sleeve of full-bore and solvable sliding sleeve mandrel catcher, the solvable sliding sleeve of full-bore includes outside slide cartridge
Set, the solvable sliding sleeve mandrel of ball seat integral type can dissolve ball, and the solvable sliding sleeve mandrel of ball seat integral type and sliding sleeve outer cylinder pass through " O " type
Sealing ring sealing, and it is fixed on sliding sleeve outer tube inner wall by controlling shear pin, sandblasting hole is arranged in slide cartridge sleeve side wall and passes through ball
The solvable sliding sleeve mandrel opening and closing of seat integral type；The solvable sliding sleeve mandrel catcher includes target seeker, catcher outer cylinder, soluble metal
Support ring, sliding sleeve mandrel catcher inner core are sealed, sliding sleeve mandrel catcher inner core is supported on capture by soluble metal support ring
It in device outer cylinder, and is sealed by solvable rubber seal "O"-ring, sliding sleeve mandrel catcher inner core lower end is led by screwed connection
Leader；The structure phase of the lower part outer wall of the solvable sliding sleeve mandrel of ball seat integral type and sliding sleeve mandrel catcher inner core upper inside wall
Matching, is cased with vulcanized rubber sealing ring in the lower part outer wall of the solvable sliding sleeve mandrel of ball seat integral type, solvable for ball seat integral type
The insertion of sliding sleeve mandrel lower part outer wall and the sealing in sliding sleeve mandrel catcher inner core upper inside wall.
The beneficial effects of the present invention are: realizing full-bore liquid discharging gas producing, being later period sand washing, test, monitoring production profile etc.
Work measure provides full-bore channel.
Detailed description of the invention
Fig. 1 is solvable sliding sleeve schematic diagram in the solvable slide bushing assembly of separate stratum fracfturing full-bore of the invention；
Fig. 2 is the solvable slide bushing assembly core catch shaft device schematic diagram of the solvable sliding sleeve of separate stratum fracfturing full-bore of the invention；
Fig. 3 is the solvable slide bushing assembly layered fracturing pipe string schematic diagram of separate stratum fracfturing full-bore of the invention.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description:
As shown in Figure 1, 2, the solvable slide bushing assembly of separate stratum fracfturing full-bore of the invention, including the solvable sliding sleeve of full-bore and
Solvable sliding sleeve mandrel catcher, the solvable sliding sleeve of full-bore include sliding sleeve outer cylinder 5, the solvable sliding sleeve mandrel 4 of ball seat integral type, can
Ball 7 is dissolved, the solvable sliding sleeve mandrel 4 of ball seat integral type is sealed with sliding sleeve outer cylinder 5 by " O " type sealing ring 2, and passes through control shear pin
3 are fixed on 5 inner wall of sliding sleeve outer cylinder, and the setting of sandblasting hole 6 is in 5 side wall of slide cartridge housing and passes through the solvable sliding sleeve mandrel 4 of ball seat integral type
Opening and closing；The solvable sliding sleeve mandrel catcher includes target seeker 8, catcher outer cylinder 9, soluble metal sealing support ring 10, sliding sleeve
Mandrel catcher inner core 13, sliding sleeve mandrel catcher inner core 13 are supported in catcher outer cylinder 9 by soluble metal support ring 10,
And sealed by solvable rubber seal "O"-ring, there is target seeker 8 in 13 lower end of sliding sleeve mandrel catcher inner core by screwed connection；
The structure phase of the lower part outer wall of the solvable sliding sleeve mandrel 4 of ball seat integral type and 13 upper inside wall of sliding sleeve mandrel catcher inner core
Match, is cased with vulcanized rubber sealing ring 1 in the lower part outer wall of the solvable sliding sleeve mandrel 4 of ball seat integral type, it is solvable for ball seat integral type
The insertion of 4 lower part outer wall of sliding sleeve mandrel and the sealing in 13 upper inside wall of sliding sleeve mandrel catcher inner core.
The solvable sliding sleeve mandrel 4 of the present invention is sealed with sliding sleeve outer cylinder 5 by common O-ring seal, and solid by control shear pin 3
It being scheduled in sliding sleeve outer cylinder 5, sliding sleeve mandrel catcher inner core 13 is supported in catcher outer cylinder 9 by soluble metal support ring 10,
And by 11,12 sealing of solvable rubber seal O circle, there is target seeker 8 in 13 lower end of sliding sleeve mandrel catcher inner core by screwed connection.
As shown in figure 3, use mechanical delamination fracturing string of the invention combines, fracturing string group is combined into (from bottom to up):
Horn mouth+fracturing packer+solvable sliding sleeve pipe string combination realizes mechanical delamination, configures pressure break packing according to the pressing crack construction number of plies
The number of combinations of device and solvable sliding sleeve, when pressing crack construction starts, first setting fracturing packer, horn mouth carries out the under tubing string
One layer of pressing crack construction；The solvable ball that the 1st grade of solvable sliding sleeve correspondingly-sized is put into after the completion of first layer pressing crack construction, is suppressed to control
Cotter nail cuts design pressure and opens solvable sliding sleeve 1, and the sliding sleeve mandrel of solvable sliding sleeve 1 passes through packer 1 and drops down onto first order sliding sleeve
In mandrel catcher, mandrel lower part vulcanized rubber hermetic unit and sliding sleeve mandrel catcher form support sealing, closing lower layer into
Row second layer pressing crack construction.After second layer pressing crack construction, the solvable ball of the 2nd grade of investment opens solvable sliding sleeve 2, solvable sliding sleeve 2
Sliding sleeve mandrel passes through packer 2 and falls into the 2nd grade of sliding sleeve mandrel catcher formation sealing after unlatching, blocks construction layer, is somebody's turn to do
The pressing crack construction of interval；The corresponding solvable sliding sleeve of solvable ball opening at different levels successively, which is put into, according to above step carries out corresponding interval
Pressing crack construction.After whole pressing crack constructions, in the mandrel catcher of the solvable sliding sleeve of full-bore soluble metal support ring with can
Electrochemical reaction dissolution occurs in fracturing outlet liquid environment and disappears for molten seal rubber, and the solvable fracturing sliding bush core of full-bore is undissolved
Part freely falls into artificial bottom of a well under Gravitative Loads, realizes the full-bore drain production in tubing string later period.
The principle of the present invention is: from from well head pitching to solvable sliding sleeve, solvable ball drops down onto sliding sleeve tee integral type sliding sleeve core
Sealing is formed on axis 4, suppresses cutting control shear pin 3, and solvable spherical zone moves sliding sleeve mandrel 4 and moves down, and solvable sliding sleeve, which is opened, exposes sandblasting
Hole 6 forms pressure break channel, while components above continues to move down and drops down onto the solvable sliding sleeve mandrel in lower part across sliding sleeve lower packer and catch
It catches and forms sealing in device inner core 13, block construction layer, carry out respective layer pressing crack construction；It is solvable after whole pressing crack constructions
Soluble metal sealing support ring 10, solvable rubber seal O circle 11,12 and solvable ball 7 in slide bushing assembly are returning drain environment
In can be completely dissolved, components above dissolution after, sliding sleeve mandrel 4, sliding sleeve mandrel catcher inner core 13 and target seeker 8 drop down onto well
The without hindrance full-bore production of full pit shaft is realized at bottom.
In conclusion the contents of the present invention are not limited in the above embodiments, the knowledgeable people in same area can
Can propose other embodiments easily within technological guidance's thought of the invention, but this embodiment is included in this hair
Within the scope of bright.
Claims (1)
1. a kind of solvable slide bushing assembly of separate stratum fracfturing full-bore, which is characterized in that including the solvable sliding sleeve of full-bore and solvable cunning
Cover mandrel catcher, the solvable sliding sleeve of full-bore includes sliding sleeve outer cylinder (5), the solvable sliding sleeve mandrel (4) of ball seat integral type, solvable
It solves ball (7), the solvable sliding sleeve mandrel (4) of ball seat integral type and sliding sleeve outer cylinder (5) are sealed by " O " type sealing ring (2), and pass through control
Shear pin (3) processed is fixed on sliding sleeve outer cylinder (5) inner wall, and sandblasting hole (6) setting is in slide cartridge housing (5) side wall and passes through ball seat integral type
Solvable sliding sleeve mandrel (4) opening and closing；The solvable sliding sleeve mandrel catcher includes target seeker (8), catcher outer cylinder (9), solvable gold
Belong to sealing support ring (10), sliding sleeve mandrel catcher inner core (13), sliding sleeve mandrel catcher inner core (13) passes through soluble metal branch
Pushing out ring (10) is supported in catcher outer cylinder (9), and is sealed by solvable rubber seal "O"-ring, in sliding sleeve mandrel catcher
Core (13) lower end has target seeker (8) by screwed connection；The lower part outer wall and cunning of the solvable sliding sleeve mandrel (4) of ball seat integral type
The structure of set mandrel catcher inner core (13) upper inside wall matches, outside the lower part of the solvable sliding sleeve mandrel (4) of ball seat integral type
Wall is cased with vulcanized rubber sealing ring (1), catches for solvable sliding sleeve mandrel (4) the lower part outer wall insertion of ball seat integral type with sliding sleeve mandrel
Catch the sealing in device inner core (13) upper inside wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811195177.6A CN109252845A (en) | 2018-10-15 | 2018-10-15 | A kind of solvable slide bushing assembly of separate stratum fracfturing full-bore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811195177.6A CN109252845A (en) | 2018-10-15 | 2018-10-15 | A kind of solvable slide bushing assembly of separate stratum fracfturing full-bore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109252845A true CN109252845A (en) | 2019-01-22 |
Family
ID=65046326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811195177.6A Pending CN109252845A (en) | 2018-10-15 | 2018-10-15 | A kind of solvable slide bushing assembly of separate stratum fracfturing full-bore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109252845A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080719A (en) * | 2019-03-25 | 2019-08-02 | 中国石油集团长城钻探工程有限公司 | A kind of solvable pressure difference sliding sleeve and horizontal well naked eye staged fracturing construction method |
| CN110847875A (en) * | 2019-11-19 | 2020-02-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Short-time throttling pipe column and short-time throttling method |
| CN111963134A (en) * | 2020-09-14 | 2020-11-20 | 中国石油集团渤海钻探工程有限公司 | Throttling-free multi-stage separate-layer fracturing pipe column and multi-stage separate-layer fracturing construction method |
| CN112160736A (en) * | 2020-09-14 | 2021-01-01 | 中国石油集团渤海钻探工程有限公司 | Non-throttling sand blasting sliding sleeve |
| CN112412404A (en) * | 2020-11-13 | 2021-02-26 | 中国石油集团渤海钻探工程有限公司 | Full-bore soluble sliding sleeve assembly multistage fracturing string for separate-layer fracturing and fracturing method thereof |
| CN112412423A (en) * | 2020-11-13 | 2021-02-26 | 中国石油集团渤海钻探工程有限公司 | Full-bore soluble throttling bottom valve for separate layer fracturing |
| CN113338844A (en) * | 2020-03-03 | 2021-09-03 | 中国石油天然气股份有限公司 | Metal soluble ball seat, setting system and setting method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386539Y (en) * | 2008-11-20 | 2010-01-20 | 吐哈石油勘探开发指挥部工程技术研究院 | Fracture used high-pressure sand blast sliding sleeve |
| CN103556971A (en) * | 2013-11-15 | 2014-02-05 | 中国石油化工股份有限公司 | Full-bore separate layer fracturing sliding sleeve for oil-gas well operation |
| CN104453784A (en) * | 2014-12-12 | 2015-03-25 | 中国石油天然气股份有限公司 | Controllable soluble-ball-seat multistage fracturing sliding sleeve |
| CN106555568A (en) * | 2015-09-24 | 2017-04-05 | 中国石油天然气股份有限公司 | A kind of fracturing sliding bush |
| US20170175487A1 (en) * | 2015-12-21 | 2017-06-22 | Vanguard Completions Ltd. | Downhole drop plugs, downhole valves, frac tools, and related methods of use |
| CN107387050A (en) * | 2017-07-11 | 2017-11-24 | 中石化石油工程技术服务有限公司 | A kind of ball-throwing type full-bore fracturing sliding bush |
| CN108625840A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | The more cluster full-bore fracturing sliding bushs of ball-throwing type |
-
2018
- 2018-10-15 CN CN201811195177.6A patent/CN109252845A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386539Y (en) * | 2008-11-20 | 2010-01-20 | 吐哈石油勘探开发指挥部工程技术研究院 | Fracture used high-pressure sand blast sliding sleeve |
| CN103556971A (en) * | 2013-11-15 | 2014-02-05 | 中国石油化工股份有限公司 | Full-bore separate layer fracturing sliding sleeve for oil-gas well operation |
| CN104453784A (en) * | 2014-12-12 | 2015-03-25 | 中国石油天然气股份有限公司 | Controllable soluble-ball-seat multistage fracturing sliding sleeve |
| CN106555568A (en) * | 2015-09-24 | 2017-04-05 | 中国石油天然气股份有限公司 | A kind of fracturing sliding bush |
| US20170175487A1 (en) * | 2015-12-21 | 2017-06-22 | Vanguard Completions Ltd. | Downhole drop plugs, downhole valves, frac tools, and related methods of use |
| CN108625840A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | The more cluster full-bore fracturing sliding bushs of ball-throwing type |
| CN107387050A (en) * | 2017-07-11 | 2017-11-24 | 中石化石油工程技术服务有限公司 | A kind of ball-throwing type full-bore fracturing sliding bush |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080719A (en) * | 2019-03-25 | 2019-08-02 | 中国石油集团长城钻探工程有限公司 | A kind of solvable pressure difference sliding sleeve and horizontal well naked eye staged fracturing construction method |
| CN110847875A (en) * | 2019-11-19 | 2020-02-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Short-time throttling pipe column and short-time throttling method |
| CN110847875B (en) * | 2019-11-19 | 2023-12-05 | 中国石油天然气集团有限公司 | Short-time throttling pipe column and short-time throttling method |
| CN113338844A (en) * | 2020-03-03 | 2021-09-03 | 中国石油天然气股份有限公司 | Metal soluble ball seat, setting system and setting method |
| US11634961B2 (en) | 2020-03-03 | 2023-04-25 | Petrochina Company Limited | Metal-based dissolvable ball seat, setting system and setting method |
| CN111963134A (en) * | 2020-09-14 | 2020-11-20 | 中国石油集团渤海钻探工程有限公司 | Throttling-free multi-stage separate-layer fracturing pipe column and multi-stage separate-layer fracturing construction method |
| CN112160736A (en) * | 2020-09-14 | 2021-01-01 | 中国石油集团渤海钻探工程有限公司 | Non-throttling sand blasting sliding sleeve |
| CN112412404A (en) * | 2020-11-13 | 2021-02-26 | 中国石油集团渤海钻探工程有限公司 | Full-bore soluble sliding sleeve assembly multistage fracturing string for separate-layer fracturing and fracturing method thereof |
| CN112412423A (en) * | 2020-11-13 | 2021-02-26 | 中国石油集团渤海钻探工程有限公司 | Full-bore soluble throttling bottom valve for separate layer fracturing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109252845A (en) | A kind of solvable slide bushing assembly of separate stratum fracfturing full-bore | |
| CA2834253C (en) | Smart hydraulic pumping device for recovery of oil and obtaining of information from the bottom of the reservoir | |
| CN103277079B (en) | A kind of tubing string of horizontal well fracturing completion and pressing crack construction method thereof | |
| CN109025943B (en) | Time-delay type fracturing channel construction method | |
| CN103277078B (en) | A kind of hydraulic sliding sleeve | |
| RU2671369C1 (en) | Drilling with liner using a withdrawable guide assembly of the bottom | |
| CN104204401A (en) | Wiper plug elements and methods of stimulating a wellbore environment | |
| CN104179485B (en) | Cementation and fracture technique string | |
| CN104314546A (en) | Staged fracturing completion string in horizontal well casing and staged fracturing process | |
| CN106481318A (en) | Adverse current sleeve actuating method | |
| CN109267984A (en) | A kind of construction method for opening pressure break channel | |
| CN101368477B (en) | Oil-water interface inspection and control method | |
| CN109296349A (en) | Piston type delayed start-up toe-end sliding sleeve | |
| RU2362002C1 (en) | Core sampler | |
| CN104196492B (en) | A kind of dragging down-hole plugging valve with pressure | |
| CN106285663A (en) | Retrievable type bottom-hole sampling instrument | |
| CN209261535U (en) | A kind of delayed start-up toe-end sliding sleeve | |
| CN205858311U (en) | A kind of bore hole staged fracturing completion tubular column | |
| CN209261536U (en) | A kind of piston type delayed start-up toe-end sliding sleeve | |
| CN112360394B (en) | Closable fracturing, discharging and extracting integrated pipe column and construction method thereof | |
| CN104912535B (en) | Many cluster fracturing sliding bushs in a kind of section | |
| CN201666142U (en) | Hydraulic perforate non-drilling stage collar | |
| CN108194050B (en) | Underground sliding sleeve opening method and device | |
| CN110617057A (en) | Full-pipe type underground testing pipe column and testing method thereof | |
| CN111877999B (en) | Coiled tubing hydraulic sand blasting perforation setting bridge plug integrated pipe column and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190122 |