CN108412442A - A kind of disposable casing perforation completion mode - Google Patents
A kind of disposable casing perforation completion mode Download PDFInfo
- Publication number
- CN108412442A CN108412442A CN201810026075.5A CN201810026075A CN108412442A CN 108412442 A CN108412442 A CN 108412442A CN 201810026075 A CN201810026075 A CN 201810026075A CN 108412442 A CN108412442 A CN 108412442A
- Authority
- CN
- China
- Prior art keywords
- reservoir
- casing
- well
- base fluid
- perforation
- 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.)
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
-
- 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
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/005—Monitoring or checking of cementation quality or level
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The present invention relates to a kind of disposable casing perforation completion modes, include the following steps：1, setting of casing；2, flushing manhole；3, slip casting；4, plug is thrown：Rubber plug is put into reservoir casing；5, it replaces：Into reservoir casing, pump notes more effect working solutions, and more effect working solutions push down on rubber plug to rubber plug blocker ring so that cement mortar enters annular space；6, Hou Ning：Cement slurry sets are waited into Behavior of Hardened Cement Paste, cement sheath is constituted in annular space；7, perforation：It is shot through reservoir casing, cement sheath in the reservoir well section of pit shaft and penetrates reservoir certain depth, establishes the seepage flow duct between reservoir and pit shaft；The method of the present invention eliminates the through wash well process in traditional completion mode and is sent to a place under guard plugging column process under, simplifies completion sequence, shortens well construction period, reduces construction cost, improve production efficiency.
Description
Technical field
The invention belongs to oil, natural gas, coal bed gas, underground heat and can ground leaching etc. mineral resources explorations development field, specifically
It is related to a kind of disposable casing perforation completion mode.
Background technology
Well-case perforating completion is a kind of domestic and international the most extensive and main completion mode.Well-case perforating completion mode
Reservoir is exactly drilled to finishing drilling well depth, forms well drilling well bottom, the design position of tripping in reservoir casing to reservoir lower part, to reservoir set
Annular space between pipe and well-drilling borehole injects cement mortar, annular space of the cement mortar between reservoir casing and well-drilling borehole
It is frozen into circular cylindrical Behavior of Hardened Cement Paste cement sheath, forms pit shaft；Then, reservoir casing, cement sheath are shot through by perforation and penetrate storage
Layer certain depth, it is established that the seepage channel between reservoir and pit shaft.
When well cementation, the cement measured design side is injected into reservoir casing with cementing design discharge capacity with pumping-in equipment on ground
Slurry, rubber plug is put into reservoir casing and with working solution is replaced by rubber plug top to design position, cement mortar is in reservoir casing and brill
Pit shaft is formed after annular space solidification between well wellbore, replacement working solution is filled in pit shaft, rubber plug top surface forms artificial well
Bottom.Therefore, before perforation, it is necessary to which into pit shaft, Flushing tubular column is led in tripping in, leads to Flushing tubular column bottom end generally on artificial bottom of a well
Portion 3m~5m, then injects well-flushing working solution in ground pumping-in equipment into logical Flushing tubular column, and well-flushing working solution cycle is replaced out
Well cementation in logical Flushing tubular column and in pit shaft replaces working solution.The dosage that well cementation replaces working solution is about hole volume, be all
Well cementation is replaced out to replace working solution, the injection rate of well-flushing working solution must be 1.5-2.0 times that well cementation replaces working solution.It is penetrated in well cementation
Kong Hou needs the tripping in de-plugging tubing string into pit shaft, bets blockages relieving fluid by de-plugging tubing string to complete de-plugging construction, de-plugging has been constructed
Cheng Hou needs to be sent to a place under guard plugging column.
It can be seen that traditional well-case perforating completion mode must have lower logical Flushing tubular column well-flushing step before perforation,
It must have after perforation and remove de-plugging tubing string de-plugging step, above-mentioned through wash well process is answered with de-plugging tubing string process work progress is removed
Miscellaneous, cost input occupies high；Meanwhile through wash well process generates tail gas, waste water and waste liquid with de-plugging tubing string process is removed, easily to ring
Border pollutes.
Invention content
The object of the present invention is to provide a kind of disposable well perforation completion modes, solve perforation completion traditional in the prior art
The problems such as process is various, long construction period, resource, the energy consumption are larger, and cost input is high, and economic benefit is low.
The technical scheme is that：
1. a kind of disposable casing perforation completion mode, it is characterised in that：Include the following steps：
Step 1, setting of casing：The tripping in reservoir casing into well-drilling borehole, annular space is constituted between reservoir casing and well-drilling borehole；
Step 2, flushing manhole：Into reservoir casing, pump note rinses well liquid, replaces out the drilling well mud in reservoir casing and in annular space
It starches and cleans the borehole wall.
Step 3, slip casting：The pump priming mud into reservoir casing replaces out the flushing manhole in reservoir casing and in annular space
Liquid；
Step 4 throws plug：Rubber plug is put into reservoir casing；
Step 5 replaces：Into reservoir casing, pump notes more effect working solutions, and more effect working solutions push down on rubber plug to rubber plug
At blocker ring so that cement mortar enters annular space；
Step 6, Hou Ning：Cement slurry sets are waited into Behavior of Hardened Cement Paste, cement sheath is constituted in annular space；
Step 8, perforation：It is shot through reservoir casing, cement sheath in the reservoir well section of pit shaft and penetrates reservoir certain depth, establishes reservoir
Seepage flow duct between pit shaft；
Further, further include after step 8：
Step 9, de-plugging：Into pit shaft, pump notes more effect working solutions, and more effect working solutions enter the nearly well of reservoir by perforation tunnel
Area prevents reservoir damage, releases perforation compacting injury and the blocking of reservoir near wellbore zone, improves reservoir near wellbore zone seepage flow energy
Power.
Further, further include after step 4：
Step 4.1, bruising：Pressure value in reservoir casing is increased, pressure-bearing and the sealing of reservoir casing and rubber plug are examined.
Further, further include after step 5：
Step 5.1 surveys three samples：Using logging mode, test evaluation cement sheath bonding quality.
Further, further include after step 6：
Step 6.1, pressure testing：Into pit shaft, pump notes more effect working solutions, increases well cylinder pressure, examines pit shaft pressure-bearing；
Further, more effect working solutions include water base fluid and/or oil-base fluid, and the density of the oil-base fluid is more than water
Base fluid and do not dissolve in water base fluid.
Further, the water base fluid includes at least clear water, and it is swollen surfactant, anti-soil adhesion can also to be added in clear water
Swollen dose, one or more of additives of cleanup additive, fluid loss control agent and water purification agent.
Further, each component mass percent of the water base fluid is：Surfactant 0.1%~1.0%, anti-soil adhesion is swollen
Swollen dose 0.1%~1.0%, cleanup additive 0.1%~0.5%, fluid loss control agent 0.1%~0.5%, water purification agent 0.01%~0.5%, surplus is clear
Water.
Further, the oil-base fluid select dichloromethane, dichloropropane, carbon tetrachloride, chlorobenzene, bromobenzene, nitrobenzene,
One or more of combinations of dichloromethane, special heavy crude.
Beneficial effects of the present invention：
1. the method for the present invention eliminates the through wash well process in traditional completion mode and is sent to a place under guard plugging column process under, completion is simplified
Process shortens well construction period, reduces construction cost, improve production efficiency；
2. inventive process avoids the use for replacing working solution in traditional completion mode, the consumption of resource and the energy is reduced,
Industrial wastewater is not generated in entire Completion Operations, reduces the discharge of waste water and gas, is effectively protected the ecology in construction area
Environment.
Description of the drawings
Fig. 1 is schematic diagram when grouting with plunger of the present invention carries out；
Fig. 2 is the schematic diagram when present invention replaces process progress；
Fig. 3 is that the wellbore schematic after coagulating is waited in the embodiment of the present invention 2, embodiment 3；
Fig. 4 is that the wellbore schematic after coagulating is waited in the embodiment of the present invention 1, embodiment 4；
Fig. 5 is the embodiment of the present invention 2, schematic diagram after pit shaft perforation in embodiment 3；
Fig. 6 is the embodiment of the present invention 1, schematic diagram after pit shaft perforation in embodiment 4.
1- well-drilling boreholes in figure, 2- well drilling well bottoms, 3- reservoir casings, 4- cement mortars, 5- rubber plugs, 6- water base fluids, 7- oil bases
Liquid, 8- reservoirs, 9- inlets, 10- rinse well liquid, the artificials bottom of a well 11-, 12- cement sheaths, 13- pit shafts, the perforation tunnels 14-.
Specific implementation mode
Below by specific implementation mode combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can be without lifting an eyebrow recognize, which part feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
It can completely understand relevant operation according to the general technology knowledge of description and this field in specification.
Embodiment 1：
Referring to Fig. 1, Fig. 2, the present embodiment provides a kind of disposable casing perforation completion modes, include the following steps：
Step 1, setting of casing：Into well-drilling borehole 1, tripping in reservoir casing 3 is to design position, well-drilling borehole 1 and reservoir casing 3 it
Between constitute annular space；
Step 2, slip casting：Cement mortar 4 is injected into reservoir casing 3 in ground pumping-in equipment；
Step 3 throws plug：Rubber plug 5 is put into reservoir casing 3；
Step 4 replaces：More effect working solutions are injected into reservoir casing 3 with pumping-in equipment on ground, and more effect working solutions are by glue
Plug 5 pushes down at top to the rubber plug blocker ring of well drilling well bottom 2, and cement mortar 4 enters annular space；
Step 5, Hou Ning：It waits cement mortar 4 to solidify, cement sheath 12 is constituted in annular space；
Step 6, pressure testing：Into reservoir casing 3 water base fluid is persistently injected with pumping-in equipment on ground, makes pressure in reservoir casing 3
Reach and keeps perforation pressure requirements；
Step 7, perforation：It is shot through reservoir casing 3, cement sheath 12 in downhole in reservoir position and penetrates reservoir certain depth, establishes storage
Seepage flow duct between layer 8 and pit shaft 13.
Step 8, de-plugging：Continue to inject more effect working solutions into pit shaft 13, more effect working solutions pass through perforation tunnel 14
Into the near wellbore zone of reservoir 8, prevents the injury of reservoir 8, releases perforation compacting injury and the blocking of reservoir near wellbore zone, improve reservoir
Near wellbore zone percolation ability.
Referring to Fig. 4, in above-mentioned steps 4, more effect working solutions include water base fluid 6 and oil-base fluid 7, the density of oil-base fluid 7
More than water base fluid 6 and base fluid not soluble in water 6.Water base fluid 6 and 7 mixed injection reservoir casing 3 of oil-base fluid replace downwards rubber plug 5,
Meanwhile under gravitational differentiation, for the small water base fluid 6 of density upper, oil-base fluid 7 forms point different stratiform fluid column up and down under.
Oil-base fluid 7 is better than water base fluid 6 with the compatibility of reservoir 8 and reservoir liquid, is better than water base fluid 6 to the protective value of reservoir 8.
In the present embodiment, water base fluid 6 is clear water, and oil-base fluid 7 is dichloropropane, from fig. 4, it can be seen that because the density of oil-base fluid 7 is big
Water base fluid 6 is not dissolved in water base fluid 6, oil-base fluid 7 is deposited on 13 lower part of pit shaft, and perforated interval is in 7 lodgment of oil-base fluid
Well section, when perforation is shot through reservoir near wellbore zone, into being oil base in perforation tunnel 14 and reservoir near wellbore zone hole and crack
Liquid 7 improves the protection to reservoir near wellbore zone, reduces the injury of reservoir 8.
It should be pointed out that in the present embodiment, water base fluid 6 and oil-base fluid 7 are in replacing step while to reservoir casing 3
Interior pump note.But in other embodiments, oiling base fluid 7, rear pump priming base fluid 6 can also be first pumped into reservoir casing 3.
In the present embodiment, following steps can be selectively added according to Specific construction situation：
Step 1.1, flushing manhole are added between step 1 and step 2：
Into reservoir casing 3, pump, which is noted, rinses well liquid, and it can be clear water to rinse well liquid, rinses well liquid and replaces out reservoir casing 3 interior and annular
Drilling mud in space simultaneously cleans the borehole wall.
Step 4.1, bruising are added between step 4 and step 5：Pressure value in reservoir casing 3 is increased, reservoir casing is examined
3 and rubber plug 5 pressure-bearing and sealing.
Step 5.1 is added between step 5 and step 6, surveys three samples：Using logging mode, 12 glue of test evaluation cement sheath
Tie quality.
Embodiment 2：
Referring to Fig. 1, Fig. 2, as different from Example 1, in the present embodiment, more effect working solutions are only water base fluid 6, this is water base
The formula of liquid 6 is as follows（By the gross mass percentages of more effect working solutions）：0.5% surfactant, 0.3% anti-sticking soil expansion
Agent, 0.1% fluid loss control agent, 0.05% water purification agent, surplus are water.
Referring to Fig. 3, in replacing step, water base fluid 6, water base fluid 6 are injected into reservoir casing 3 in ground pumping-in equipment
Rubber plug 5 is pushed down on to design position so that cement mortar 4 enters annular space；After Hou Ning, pressure testing step, you can in pit shaft
Implement perforation under the hole condition full of water base fluid 6 in 13.
Here is two Application Examples in real well：
Embodiment 3
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, pound sign：J97-41, layer position:Y, reservoir well section：1920.0-1966.3m, drilling well well
It is deep：1998.6m, reservoir casing：124.26mm in φ, wall thickness 7.72mm.
Step 1, setting of casing：From 1 tripping in reservoir casing 3 to 1989.2m of well-drilling borehole, inlet 9 is connected.
Step 2, flushing manhole：
2.1, connection pump note pipeline, it is qualification that pipeline pressure testing 20.1Mpa, which maintains 15min,；
2.2, direct circulation flushing manhole 1.8 weeks.
Step 3, slip casting：Pump fluid injection is switched to the cement mortar 4 for meeting design requirement, according to design requirement pump priming mud
4。
Step 4 throws plug：Control switch is opened, is discharged and below pushing tow rubber plug 5 to 9 lower edge of inlet；
Step 5 replaces：Pump fluid injection is switched to more effect working solutions, more effect working solutions are noted according to design requirement pump.More work(
Effect working solution is water base fluid 6, and formula is（By the gross mass percentages of more effect working solutions）：0.5% surface-active, 0.3%
Anti-soil adhesion swelling agent, 0.1% fluid loss control agent, 0.05% water purification agent, surplus are clear water.
Step 6, bruising：Pump injection pressure power rises to 20.2Mpa, sits rubber plug 5 in the design position of well drilling well bottom 2.
Step 7, Hou Ning：Closing well 72h waits solidifying.
Step 8 surveys three samples：Design well section well logging, 12 bonding quality of test evaluation cement sheath；
Step 9, pressure testing：15min is lasted under 15.0Mpa pressure, it is qualification to examine 13 pressure-bearing of pit shaft.
Step 10, perforation：Layer position：C8, well section：1922.0~1928.0m, Kong Mi：16 holes/m, emissivity 100%, after penetrating
Without oil/gas show.
Step 11, de-plugging：Continue to inject more effect working solutions into pit shaft with pumping-in equipment on ground.
Embodiment 4
Referring to Fig. 1, Fig. 2, Fig. 4 and Fig. 6, pound sign：J25-36, layer position:C6, reservoir well section：1792.6-1821.1m, drilling well well
It is deep：1852.6m, reservoir casing：124.26mm in φ, wall thickness 7.72mm.
Step 1, setting of casing：From wellbore tripping in reservoir casing to 1845.3m, inlet 9 is connected.
Step 2, flushing manhole
2.1, connection pump note pipeline, it is qualification that pipeline pressure testing 20.1Mpa, which maintains 15min,；
2.2, direct circulation flushing manhole 1.6 weeks.
Step 3, slip casting：Pump fluid injection is switched to the cement mortar 4 for meeting design requirement, according to design requirement pump priming mud
4。
Step 4 throws plug：Control switch is opened, is discharged and below pushing tow rubber plug 5 to 9 lower edge of inlet；
Step 5 replaces：Pump fluid injection is switched to more effect working solutions, more effect working solutions are noted according to design requirement pump.More work(
Effect working solution is mixed by water base fluid 6 and oil-base fluid 7, and the formula of wherein water base fluid 6 is（By the gross mass percentage of more water base fluids
Than meter）：0.5% surface-active, 0.3% anti-soil adhesion swelling agent, 0.1% fluid loss control agent, 0.05% water purification agent, surplus is clear water；Oil base
Liquid 7 selects bromobenzene.
Step 6, bruising：Pump injection pressure power rises to 20.0Mpa, sits rubber plug 5 in the design position of well drilling well bottom 2；
Step 7, Hou Ning：Closing well 72h waits solidifying；
Step 8 surveys three samples：Design well section well logging, 12 bonding quality of test evaluation cement sheath；
Step 9, pressure testing：Pressure is maintained to last 15min under 15.1Mpa, it is qualification to examine 13 pressure-bearing of pit shaft.
Step 10, perforation：Layer position：Y, well section：1796.0~1802.0m, Kong Mi：16 holes/m, emissivity 100%, after penetrating
Without oil/gas show;
Step 11, de-plugging：More effect working solutions are persistently injected into pit shaft 13 with pumping-in equipment on ground.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, it is that claim of the invention is covered.
Claims (9)
1. a kind of disposable casing perforation completion mode, it is characterised in that：Include the following steps：
Step 1, setting of casing：The tripping in reservoir casing into well-drilling borehole, annular space is constituted between reservoir casing and well-drilling borehole；
Step 2, flushing manhole：Into reservoir casing, pump note rinses well liquid, replaces out the drilling well mud in reservoir casing and in annular space
It starches and cleans the borehole wall；
Step 3, slip casting：The pump priming mud into reservoir casing replaces out the flushing well liquid in reservoir casing and in annular space；
Step 4 throws plug：Rubber plug is put into reservoir casing；
Step 5 replaces：Into reservoir casing, pump notes more effect working solutions, and more effect working solutions push down on rubber plug to rubber plug
At blocker ring so that cement mortar enters annular space；
Step 6, Hou Ning：Cement slurry sets are waited into Behavior of Hardened Cement Paste, cement sheath is constituted in annular space；
Step 7, perforation：It is shot through reservoir casing, cement sheath in the reservoir well section of pit shaft and penetrates reservoir certain depth, establishes reservoir
Seepage flow duct between pit shaft.
2. disposable casing perforation completion mode according to claim 1, it is characterised in that：Further include after step 7：
Step 8, de-plugging：Into pit shaft, pump notes more effect working solutions, and more effect working solutions enter the nearly well of reservoir by perforation tunnel
Area prevents reservoir damage, releases perforation compacting injury and the blocking of reservoir near wellbore zone, improves reservoir near wellbore zone seepage flow energy
Power.
3. disposable casing perforation completion mode according to claim 1, it is characterised in that：Further include after step 4：
Step 4.1, bruising：Pressure value in reservoir casing is increased, pressure-bearing and the sealing of reservoir casing and rubber plug are examined.
4. disposable casing perforation completion mode according to claim 1, it is characterised in that：Further include after step 5：
Step 5.1 surveys three samples：Using logging mode, test evaluation cement sheath bonding quality.
5. disposable casing perforation completion mode according to claim 1, it is characterised in that：Further include after step 6：
Step 6.1, pressure testing：Into pit shaft, pump notes more effect working solutions, increases well cylinder pressure, examines pit shaft pressure-bearing.
6. disposable casing perforation completion mode according to claim 5, it is characterised in that：More effect working solutions
Including water base fluid and/or oil-base fluid, the density of the oil-base fluid does not dissolve in water base fluid more than water base fluid.
7. disposable casing perforation completion mode according to claim 6, it is characterised in that：The water base fluid includes at least
One kind of surfactant, anti-soil adhesion swelling agent, cleanup additive, fluid loss control agent and water purification agent can also be added in clear water in clear water
Or several additives.
8. disposable casing perforation completion mode according to claim 7, it is characterised in that：The each component of the water base fluid
Mass percent is：Surfactant 0.1%~1.0%, anti-soil adhesion swelling agent 0.1%~1.0%, cleanup additive 0.1%~0.5% are prevented
Fluid loss agents 0.1%~0.5%, water purification agent 0.01%~0.5%, surplus are clear water.
9. disposable casing perforation completion mode according to claim 5, it is characterised in that：The oil-base fluid selects two
One or more of groups of chloromethanes, dichloropropane, carbon tetrachloride, chlorobenzene, bromobenzene, nitrobenzene, dichloromethane, special heavy crude
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026075.5A CN108412442A (en) | 2018-01-11 | 2018-01-11 | A kind of disposable casing perforation completion mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026075.5A CN108412442A (en) | 2018-01-11 | 2018-01-11 | A kind of disposable casing perforation completion mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108412442A true CN108412442A (en) | 2018-08-17 |
Family
ID=63125514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810026075.5A Pending CN108412442A (en) | 2018-01-11 | 2018-01-11 | A kind of disposable casing perforation completion mode |
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| Country | Link |
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| CN (1) | CN108412442A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119764A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Gas invasion preventing device and drilling string comprising same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1501504A (en) * | 1974-01-28 | 1978-02-15 | Suman G | Well completion method and system |
| CN106996282A (en) * | 2017-06-08 | 2017-08-01 | 成都北方石油勘探开发技术有限公司 | The compound completion method of pneumatic jack trap |
-
2018
- 2018-01-11 CN CN201810026075.5A patent/CN108412442A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1501504A (en) * | 1974-01-28 | 1978-02-15 | Suman G | Well completion method and system |
| CN106996282A (en) * | 2017-06-08 | 2017-08-01 | 成都北方石油勘探开发技术有限公司 | The compound completion method of pneumatic jack trap |
Non-Patent Citations (1)
| Title |
|---|
| 张明昌: "《固井工艺技术》", 31 August 2007 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119764A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Gas invasion preventing device and drilling string comprising same |
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