CN110259412A - A method of temporarily stifled oil gas well shaft - Google Patents
A method of temporarily stifled oil gas well shaft Download PDFInfo
- Publication number
- CN110259412A CN110259412A CN201910454935.XA CN201910454935A CN110259412A CN 110259412 A CN110259412 A CN 110259412A CN 201910454935 A CN201910454935 A CN 201910454935A CN 110259412 A CN110259412 A CN 110259412A
- Authority
- CN
- China
- Prior art keywords
- setting
- bridge plug
- distorted pattern
- prefabricated component
- shaft
- 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.)
- Granted
Links
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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/134—Bridging plugs
Abstract
The invention discloses a kind of methods of temporarily stifled oil gas well shaft, comprising the following steps: (1) bridge plug prefabricated component is contracted in advance in setting cylinder, the outer diameter of setting cylinder is less than pit shaft internal diameter；Wherein bridge plug prefabricated component includes distorted pattern, and distorted pattern is made of deformable rubber or plastics, has hollow lumen, and distorted pattern outer wall is spaced is embedded with slips from top to bottom；(2) it by setting cylinder with pit shaft designated position is arrived under setting tool, is present under seal pressure effect, bridge plug prefabricated component is deviate from and is unfolded from setting cylinder；(3) mixed slurry is filled into distorted pattern hollow lumen, and the slips and shaft in wall is made to fix and block pit shaft after mixed slurry setting expansion.The method that oil/gas well according to the present invention temporarily blocks up oil gas well shaft can faster descend the setting tool envelope major diameter casing of minor diameter, and set is effectively prevent to become the accident generation for blocking bridge plug and setting tool, convenient and quick construction.
Description
Technical field
This patent disclosure relates generally to oil-gas field development fields, and in particular to a method of temporarily stifled oil gas well shaft.
Background technique
With the large-scale application of petroleum gas fracturing technology, the staged fracturing skill of bridge plug packer (referred to as " bridge plug ")
Art generally uses.But traditional bridge plug packer is made primarily of metal, and deformation size is small.But since the factors such as geological movement pass through
It often will appear wellbore casing to deform (casing deformation well), set change often occur and block bridge plug and setting tool, cause the accident.
Summary of the invention
The object of the present invention is to provide a kind of methods of temporarily stifled oil gas well shaft, can faster descend the setting tool envelope of minor diameter
Major diameter casing, it is easy for construction, improve production efficiency.
According to the first aspect of the invention, a kind of oil/gas well is first provided temporarily to block up and fracturing technology bridge plug prefabricated component, including
Distorted pattern, distorted pattern are made of deformable rubber or plastics, have hollow lumen, and distorted pattern outer wall is spaced is embedded with from top to bottom
Slips.
Under preferable case, distorted pattern outer wall is also arranged with sealing ring.
Under preferable case, the slips is self-dissolving solution slips (or solvable slips).
According to the second aspect of the invention, a kind of oil/gas well temporarily stifled and fracturing technology bridge plug packer, including sheet is provided
The bridge plug prefabricated component of invention first aspect further includes setting cylinder, and the bridge plug prefabricated component is contracted in setting cylinder, in the bridge plug
Multiple material cartridges are provided among or on prefabricated component, the multiple material cartridge is respectively provided with substance not of the same race, described not of the same race
It being capable of setting expansion after material mixing.
Under concrete condition, the substance not of the same race can be made of any materials for capableing of setting expansion after combining, including
But it is not limited to resin, curing agent, cement, water, certainly dissolution alloy, swelling agent and/or foaming agent.
According to the third aspect of the invention we, a kind of method of temporarily stifled oil gas well shaft is provided, comprising the following steps:
(1) the bridge plug prefabricated component of first aspect present invention is contracted in advance in setting cylinder, the outer diameter of setting cylinder is less than well
Cylinder internal diameter；
(2) it by setting cylinder with pit shaft designated position is arrived under setting tool, is present under seal pressure effect, bridge plug prefabricated component is from seat
Deviate from sealed tube and is unfolded；
(3) mixed slurry is filled into distorted pattern hollow lumen, and the slips and pit shaft are made after mixed slurry setting expansion
Inner wall is fixed and blocks pit shaft.
Under preferable case, multiple material cartridges are provided among or on the bridge plug prefabricated component, are also shunk in advance present
In sealed tube, the multiple material cartridge is respectively provided with substance not of the same race, is present under seal pressure effect, the substance not of the same race is from described
It is extruded in multiple material cartridges, into distorted pattern hollow lumen, forms mixed slurry after mixing.In other embodiments, it mixes
Slurry is pre-mixed on well, after bridge plug prefabricated component is deviate from and is unfolded from setting cylinder, is infused by well head by setting tool
Enter mixed slurry, into distorted pattern hollow lumen, carries out setting expansion.
Under preferable case, the distorted pattern outer wall is also arranged with sealing ring in advance, during setting expansion, sealing ring with
Shaft in wall sealing.
Under preferable case, in the mixed slurry include but is not limited to resin, curing agent, cement, water, swelling agent and/or
Foaming agent.
Under preferable case, containing can dissolve in acid solution, lye or saline solution from dissolved material in the mixed slurry.
After step (3), etc. after the completion of pressure breaks or other operations, acid solution, lye or saline solution are added into setting cylinder or pit shaft so that
Solidification material is disintegrated, and realizes deblocking.
Under preferable case, it is described from dissolved material be graininess or spherical alloy, surface pass through Passivation Treatment.
It further include curing reaction exothermic material in the mixed slurry under preferable case.
Under preferable case, the distorted pattern center is provided with vertical center-pole, center-pole is hollow structure.
Under preferable case, the setting cylinder outer diameter is 30-60mm, wall thickness 1-10mm.
A kind of method of temporarily stifled oil gas well shaft according to the present invention can effectively prevent set change and block bridge plug and setting tool
Accident occur, resistance to >=70 megapascal pressure after the solidification of the bridge plug packer that is formed in situ, pressure maintaining 48 hours or more, resistance to temperature 300
DEG C or more.After the completion of work, which, which can both bore, is ground off, and can also be dissolved certainly, natural degradation 10 days or so.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of bridge plug prefabricated component according to the present invention.
Fig. 2 is the overlooking structure diagram of bridge plug prefabricated component according to the present invention.
Fig. 3 is the structural schematic diagram according to the bridge plug packer of one embodiment of the invention.
Fig. 4 is the structural schematic diagram according to the bridge plug packer of another embodiment of the present invention.
Fig. 5 is the method and process schematic diagram of temporarily stifled oil gas well shaft according to the present invention.
Specific embodiment
To absolutely prove characteristic of the invention and implementing mode of the invention, embodiment is given below.
Embodiment 1
Referring to Fig. 1-2, a kind of oil/gas well temporarily stifled and fracturing technology bridge plug prefabricated component, including distorted pattern according to the present invention
1, distorted pattern 1 is made of deformable rubber or plastics, has hollow lumen, 1 outer wall of distorted pattern is spaced from top to bottom is embedded with card
Watts 2.1 outer wall of distorted pattern is also arranged with sealing ring 3, and sealing ring 3 can be set 1 and at most cover.Sealing ring 3 is in some cases
It can be omitted, directly sealed by the deformable rubber of distorted pattern 1 or plastics and wellbore casing.
Slips 2 can be using the slips shape and material in existing bridge plug, and the card tooth on surface under pressure can be with well
Barrel fixes.Preferably by being made from dissolved material inside slips 2, such as magnesium alloy, aluminium alloy etc., it can be in acid solution, lye, salt
From dissolution in liquid or water.The deformable rubber or plastics of distorted pattern 1 can also be in acid solution, lye, saline solution or water from dissolution.
Embodiment 2
Referring to Fig. 3, the present embodiment provides a kind of bridge plug packer, including bridge plug prefabricated component described in embodiment 1, further includes
Setting cylinder 4, the bridge plug prefabricated component are contracted in setting cylinder 4, be provided among the bridge plug prefabricated component multiple material cartridges (or
Bag).Three material cartridges 5,6,7 are shown in figure, material cartridge 5,6,7 is respectively provided with substance not of the same race.After material mixing not of the same race
It being capable of setting expansion.Material cartridge is made of thin-walled material, can be squeezed and broken under pressure；Or setting is opened in material cartridge lower end
Mouthful, opening is sealed with thin-walled material in advance.
Material cartridge 5,6,7 can be by multiple combinations, such as resin, curing agent, swelling agent three combination, and resin can be phenol
Urea formaldehyde, epoxy resin etc., curing agent and swelling agent selection are corresponding with resin.In addition, material cartridge 5,6,7 can for cement,
Water, swelling agent.In addition, swelling agent can also be replaced with closed-cell foam agent.
Furthermore it is also possible to increase from dissolution alloy box or added in material cartridge 5,6,7 from dissolution alloying pellet or ball, example
Such as magnesium alloy, aluminium alloy.Pass through Passivation Treatment from dissolution alloying pellet or ball surface.Surface passivating treatment is in order in solid
It is not involved in reaction when solidification rapidly, is made as additive, and after solidifying fracture job, surface treating agent is first in water in the wellbore
It is slowly dissolved, is then redissolved from dissolution alloying pellet or alloy, so that entire solid be made to resolve into liquid or powder completely.It is real
The controlled degradation of existing bridge plug packer, meets different work time requirement.
Furthermore it is also possible to increase curing reaction exothermic material box or add curing reaction heat release material in material cartridge 5,6,7
Material, accelerates curing rate, solidification intensity is bigger.
Embodiment 3
Referring to fig. 4, the present embodiment provides another bridge plug packer, including bridge plug prefabricated component described in embodiment 1, also wraps
Setting cylinder 4 is included, the bridge plug prefabricated component is contracted in setting cylinder 4, is provided with multiple material cartridges on the bridge plug prefabricated component
(or bag).Two material cartridges 5,6 are shown in figure, material cartridge 5,6 is respectively provided with substance not of the same race, energy after material mixing not of the same race
Enough setting expansions.
Material cartridge 5,6 can be by multiple combinations, such as resin and curing agent combination, and resin can be phenolic resin, epoxy
Resin etc., curing agent selection are corresponding with resin.In addition, material cartridge 5,6 can combine for cement and water.In addition, swelling agent or
Closed-cell foam agent can be added in advance in resin or cement.The addition of other materials is the same as embodiment 2.
The method that lower mask body introduces temporarily stifled oil gas well shaft according to the present invention.
Referring to Fig. 5, by taking the bridge plug packer in embodiment 2 as an example, the course of work is specifically divided into three steps:
(a) before setting operation, bridge plug prefabricated component is contracted in advance in setting cylinder 4, and when work, bridge plug packer is with setting
10 designated position of pit shaft is arrived under tool.
(b) being present under seal pressure effect (can pass through the water pressure generation into setting cylinder 4), and bridge plug prefabricated component is from setting 4 lower end of cylinder
Abjection, 1 dilatancy of distorted pattern are contacted with shaft in wall, and the substance not of the same race in material cartridge 5,6,7 is extruded into distorted pattern 1
Inner cavity in mix, make slips 2 after setting expansion and 4 inner wall of pit shaft be tightly fastened and block wellbore casing.
(c) etc. after the completion of fracture jobs, all solution is being added or well returns in drain in curing materials, distorted pattern 1 and slips 2
Dissolution.
The above course of work is by taking vertical well operations as an example, and temporary stifled oil gas well shaft certainly of the invention is also applied for level
Well operations.In addition, in other embodiments of the invention, vertical center-pole, center-pole can also be provided in 1 center of distorted pattern
For hollow structure.Center-pole upper end can be sealed with pitching, thus consistent with existing bridge plug packer construction technology.
The big feature of of the invention one is the aximal deformation value using distorted pattern 1, can be contracted in advance in setting cylinder 4, therefore
It will not block and block when being transferred in pit shaft 10, especially for casing deformation well；Bridge is discharged again after reaching designated position
Prefabricated component is filled in, pit shaft is blocked by the setting expansion of slurry.Therefore, the present invention can faster descend minor diameter φ 50- φ 60mm
The major diameters casing such as bridge plug packer packing diameter 114mm, 118mm, 124mm, greatly improve production efficiency.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention.It is all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field similarly includes in the scope of the present invention.
Claims (8)
1. a kind of method of temporarily stifled oil gas well shaft, which comprises the following steps:
(1) bridge plug prefabricated component is contracted in advance in setting cylinder, the outer diameter of setting cylinder is less than pit shaft internal diameter；Wherein bridge plug prefabricated component
Including distorted pattern, distorted pattern is made of deformable rubber or plastics, has hollow lumen, distorted pattern outer wall is spaced embedding from top to bottom
Equipped with slips；
(2) it by setting cylinder with pit shaft designated position is arrived under setting tool, is present under seal pressure effect, bridge plug prefabricated component is from setting cylinder
Middle abjection is simultaneously unfolded；
(3) mixed slurry is filled into distorted pattern hollow lumen, and the slips and shaft in wall are made after mixed slurry setting expansion
It fixes and blocks pit shaft.
2. the method according to claim 1, wherein being provided among or on the bridge plug prefabricated component multiple
Material cartridge is also contracted in setting cylinder in advance, and the multiple material cartridge is respectively provided with substance not of the same race, seal pressure effect of being present
Under, the substance not of the same race is extruded from the multiple material cartridge, into distorted pattern hollow lumen, forms mixing slurry after mixing
Material.
3. the method according to claim 1, wherein mixed slurry is pre-mixed on well, when bridge plug is prefabricated
Part injects mixed slurry by setting tool after deviating from and being unfolded in setting cylinder, by well head, into distorted pattern hollow lumen, into
Row setting expansion.
4. the method according to claim 1, wherein the distorted pattern outer wall is also arranged with sealing ring in advance,
During setting expansion, sealing ring and shaft in wall are sealed.
5. the method according to claim 1, wherein the slips is solvable slips.
6. the method according to claim 1, wherein in the mixed slurry include resin, curing agent, cement,
Water, swelling agent and/or foaming agent.
7. the method according to claim 1, wherein be provided with vertical center-pole in the distorted pattern center, in
Core bar is hollow structure.
8. the method according to claim 1, wherein the setting cylinder outer diameter is 30-60mm, wall thickness 1-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454935.XA CN110259412B (en) | 2019-05-29 | 2019-05-29 | Method for temporarily blocking oil-gas well shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454935.XA CN110259412B (en) | 2019-05-29 | 2019-05-29 | Method for temporarily blocking oil-gas well shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110259412A true CN110259412A (en) | 2019-09-20 |
| CN110259412B CN110259412B (en) | 2022-01-11 |
Family
ID=67915768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910454935.XA Active CN110259412B (en) | 2019-05-29 | 2019-05-29 | Method for temporarily blocking oil-gas well shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110259412B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU976024A1 (en) * | 1981-05-06 | 1982-11-23 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Apparatus for isolating drilling mud absorption zones |
| CN85105851A (en) * | 1985-08-03 | 1987-03-04 | 开滦矿务局范各庄矿 | Blocking water currents with filled sacks and equipment |
| US5890537A (en) * | 1996-08-13 | 1999-04-06 | Schlumberger Technology Corporation | Wiper plug launching system for cementing casing and liners |
| DE202010009171U1 (en) * | 2010-06-17 | 2010-12-02 | Merlaku, Kastriot | Device that can close a broken oil hole |
| CN205445544U (en) * | 2016-03-24 | 2016-08-10 | 河南理工大学 | Colliery is boring polyurethane long distance hole sealing device of fixing a point fast in pit |
| CN205638347U (en) * | 2016-04-27 | 2016-10-12 | 西安科技大学 | Spring is in same direction as coal seam gun drilling hole sealing material mixture device |
| CN106801590A (en) * | 2017-01-20 | 2017-06-06 | 北京中科金腾科技有限公司 | A kind of dissolvable slips and bridging plug |
| CN107489397A (en) * | 2017-09-01 | 2017-12-19 | 成都维泰油气能源技术有限公司 | A kind of solvable bridging plug and oil gas well shaft insulate method temporarily |
-
2019
- 2019-05-29 CN CN201910454935.XA patent/CN110259412B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU976024A1 (en) * | 1981-05-06 | 1982-11-23 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Apparatus for isolating drilling mud absorption zones |
| CN85105851A (en) * | 1985-08-03 | 1987-03-04 | 开滦矿务局范各庄矿 | Blocking water currents with filled sacks and equipment |
| US5890537A (en) * | 1996-08-13 | 1999-04-06 | Schlumberger Technology Corporation | Wiper plug launching system for cementing casing and liners |
| DE202010009171U1 (en) * | 2010-06-17 | 2010-12-02 | Merlaku, Kastriot | Device that can close a broken oil hole |
| CN205445544U (en) * | 2016-03-24 | 2016-08-10 | 河南理工大学 | Colliery is boring polyurethane long distance hole sealing device of fixing a point fast in pit |
| CN205638347U (en) * | 2016-04-27 | 2016-10-12 | 西安科技大学 | Spring is in same direction as coal seam gun drilling hole sealing material mixture device |
| CN106801590A (en) * | 2017-01-20 | 2017-06-06 | 北京中科金腾科技有限公司 | A kind of dissolvable slips and bridging plug |
| CN107489397A (en) * | 2017-09-01 | 2017-12-19 | 成都维泰油气能源技术有限公司 | A kind of solvable bridging plug and oil gas well shaft insulate method temporarily |
Non-Patent Citations (3)
| Title |
|---|
| LI, Z等: "Experimental Study, Characterization and Application of Starch-Graft-Acrylamide Gel for Plugging", 《MATERIALS SCIENCE-MEDZIAGOTYRA》 * |
| 刘辉等: "页岩气水平井可溶性桥塞室内测试及现场试验", 《天然气勘探与开发》 * |
| 蒲朝阳等: "水力坐封止浆塞的研制与应用", 《煤炭工程》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110259412B (en) | 2022-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3042035B1 (en) | Method for isolation of a permeable zone in a subterranean well | |
| CN105332719A (en) | Cement-polyurethane composite grouting process capable of blocking water fast | |
| CN104726078B (en) | A kind of GEL USED FOR PLUGGING WELL LOST CIRCULATION and preparation method thereof | |
| CN110552656B (en) | Method for fixed-point crack initiation of low-permeability layer of water flooded well | |
| CN107575186A (en) | One kind crosses screen casing sand-preventing process | |
| CN106145835A (en) | A kind of fast setting sealing loss circulation material and preparation method thereof, application process | |
| CN109695462A (en) | A kind of high intensity two fluid grouting anchor pole | |
| CN110259412A (en) | A method of temporarily stifled oil gas well shaft | |
| CN109026085A (en) | A kind of coal mining high tensile steel tube concrete pillar and its application method | |
| KR100661126B1 (en) | Cement grout device with inorganic soil stabilizer using modular packing system and its method | |
| CN101899291B (en) | Annular chemical packer material for water plugging of horizontal well | |
| CN111706309B (en) | Crack initiation method for cased well | |
| JPS5830966B2 (en) | Chemical injection method | |
| KR20040005756A (en) | Compaction grouting system for a construction of water-proof wall | |
| WO2020245882A1 (en) | Cement slurry supplying method, and borehole excavation method and cementing method using said supplying method | |
| CN113755145A (en) | Preparation for plugging compact oil gas perforation hole and preparation method thereof | |
| CN211008566U (en) | Bridge plug prefabricated part for oil-gas well temporary plugging and fracturing process and bridge plug packer | |
| RU2330933C1 (en) | Method of producing formation insulation during cementation of casing pipe | |
| JP5234539B2 (en) | Construction method of underwater pillar | |
| RU2342517C2 (en) | Method of cementing casing pipe of gas well under conditions of permafrost rocks | |
| CN111764933B (en) | Construction method for rapid seepage-proofing consolidation grouting plugging of water-rich tunnel | |
| CN114891492B (en) | Low-temperature self-suspension curing sand and preparation method thereof | |
| CN113863892B (en) | Drilling leak-stopping small ball and preparation method thereof | |
| CN113445959B (en) | Drilling drainage structure of karst or fault tunnel and construction method and construction structure thereof | |
| CN107288578A (en) | One kind only takes hot ground hot hole solid hole plugging device and the method for not fetching water |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |