CN108625836A - A kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir - Google Patents
A kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir Download PDFInfo
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- CN108625836A CN108625836A CN201810491995.4A CN201810491995A CN108625836A CN 108625836 A CN108625836 A CN 108625836A CN 201810491995 A CN201810491995 A CN 201810491995A CN 108625836 A CN108625836 A CN 108625836A
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- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
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- 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
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- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to the oilwell water shutoffs and fracturing yield increasing technical field used in oil exploitation, and in particular to a kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir takes nano combined high-strength blocking agent and clear water in mass ratio 47:5 mixing；Stratum is injected the mixture under the conditions of 0 90 DEG C, water outlet position and cracking initiation are blocked；Nano combined high-strength blocking agent is replaced into oil reservoir with fresh water balance；Closing well is waited solidifying；Drifting is to shaft bottom；With cementing truck pressure testing；To carrying out radial hydraulic jetting fracturing at the top of sandstone reservoir；The suction that drives a well is gone into operation.Present method solves blocking agent intensity in conventional water-plugging technique it is low or solidification after easily shrink, it is low with formation cementation intensity, cause high water-cut well is stifled incessantly or after blocking to increase production the big problem of difficulty, a new way is opened for the highly aqueous well control water yield-increasing technology of hyposmosis bottom water reservoir.
Description
Technical field
The invention belongs to the oilwell water shutoffs and fracturing yield increasing technical field used in oil exploitation, and in particular to a kind of low
Permeate the highly aqueous well control water method for increasing of bottom water reservoir.
Background technology
In hyposmosis bottom water reservoir development process, due to being influenced by formation fracture and anisotropism, pressure break changes in addition
Operation is made, links up bottom water after easily causing oil well measure, aqueous ascensional range is big, High water cut, and the presence of these wells seriously affects
The performance of oil well productivity and oil field long term stable production.Conventional control water-plugging technique cannot be satisfied the volume increase of such oil reservoir control water at present
Demand.The phase starts exploratory development to bottom water reservoir control water-plugging technique both at home and abroad in the early 1990s, undergoes the development and progress of more than ten years,
There is the technology that bottom water reservoir early water block-off, bottom water watered-out well water blockoff etc. are directed to middle and high infiltration oil field.But in hyposmosis bottom water oil
Technical bottleneck is always existed in terms of the control water blockoff of Tibetan：On the one hand, chemical water plugging of oil well conventional at present is mainly Polymer Plugging Agent,
And to be often discharged intensity big for hyposmosis bottom water reservoir high water-cut well, and well head pressure is higher, Polymer Plugging Agent intensity is difficult to meet
It blocks and requires；On the other hand, for hyposmosis bottom water reservoir, under existing technology, the high-strength blocking agent such as big cement class of intensity
Injection difference easily causes near wellbore zone reservoir damage and is easily shunk after curing, low with formation cementation intensity, shows high water-cut well
Go out to block up incessantly or increases production the problems such as difficulty is big after blocking.
Therefore, to solve the above problems, the present invention proposes a kind of highly aqueous well control water volume increase of hyposmosis bottom water reservoir
Method develops nano combined high-strength blocking agent, improves the success rate of control water volume increase.
Invention content
The purpose of the present invention one is that overcome in hyposmosis bottom water reservoir conventional oil well chemical water shutoff be mainly Polymer Plugging Agent,
And to be often discharged intensity big for hyposmosis bottom water reservoir high water-cut well, and well head pressure is higher, Polymer Plugging Agent intensity is difficult to meet
The problem of closure requires；Purpose is second is that overcome hyposmosis bottom water reservoir, and under existing technology, big cement class of intensity etc. is high-strength
Blocking agent injection difference easily causes near wellbore zone reservoir damage and is easily shunk after curing, low with formation cementation intensity, to high water-cut well
Show to block up incessantly or increase production after blocking the big problem of difficulty.
For this purpose, the present invention provides a kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir, including walk as follows
Suddenly：
1）The nano combined high-strength blocking agent that mass parts are 40-70 parts and the clear water that mass parts are 50 parts are mixed to form suspension；
2）By step 1 under the conditions of 0-90 DEG C）Suspension inject stratum, to water outlet position and cracking initiation block；
3）With clear water, by the suspension in the pit shaft of stratum, all balance is replaced into oil reservoir；
4）It closes oil well and waits solidifying crack and the water stream channel for making the solid of suspension formation expansion block in oil reservoir；
5）Lead to oil well to shaft bottom；
6）With cementing truck pressure testing until pressure testing is qualified；
7）Reservoir is set to form diameter to carrying out radial hydraulic jetting fracturing at the top of oil reservoir sand body using hydraulic jetting fracturing tool
To horizontal fracture；
8）Oil well suction is opened, by oil field pumping criteria program, suction operation is carried out to oil well.
The nano combined high-strength blocking agent is enhanced by the superfine cement of mass ratio 70%-90%, the nanometer of mass ratio 1%-30%
The retarder mixture of agent and mass ratio 1%-20% form.
The grain size of the superfine cement is 0.2 μm -20 μm.
The nanometer strengthener is mixed by hydrophilic nano-silicon dioxide and lipophilic nano silicon dioxide, hydrophilic
The mass ratio of nano silicon dioxide and lipophilic nano silicon dioxide is 3：1~1：3.
The mass ratio of the hydrophilic nano-silicon dioxide and lipophilic nano silicon dioxide is 1：1.
The retarder is larch sulfonation tannin extract, and larch sulfonation tannin extract is the sulfonated products of tannin and non-tannis.
The step 1）It is middle that nano combined high-strength blocking agent and clear water are mixed to form by suspension, step 2 using cementing truck）With
Step 3）It is middle that suspension and clear water are injected by stratum using Frac unit or cementing truck, and injection pressure power is pumped when injection to be no more than ground
Subject to the 80% of layer fracture pressure.
The step 4）Middle suspension need to react the solid that expansion is formed after 5-72h under the conditions of 0-90 DEG C of formation temperature.
The step 6）It is qualification that middle pressure testing is less than 0.5MPa with half an hour well mouth of oil well pressure drop, if pressure testing is unqualified, weight
Multiple above-mentioned steps 1）To step 5）Until pressure testing is qualified.
Beneficial effects of the present invention：
1, the highly aqueous well control water method for increasing of this hyposmosis bottom water reservoir provided by the invention, by nano combined high-strength stifled
The proprietary characteristic of agent, by eight steps, when solving existing water-plugging technique construction, Polymer Plugging Agent intensity is low or conventional water
It is easily shunk after the solidification of mud class blocking agent, it is low with formation cementation intensity, the problem of follow-up well stimulation requirement cannot be met.This method is special
Not Shi Yongyu hyposmosis bottom water reservoir high-water-cut oil-producing well, have a good application prospect.
2, the nano combined high-strength blocking agent configuration that the present invention uses is simple, and the thickening time is controllable, can adjust according to the design needs
Control the thickening time；Microdilatancy after the addition of nano material makes the blocking agent cure, and substantially increase cementing strength and pressure resistance
Degree.
3, the radial hydro-jet fracturing technology that the present invention uses is carried out being stitched to primary fissure using nano combined high-strength blocking agent
After closure, radial level crack can be formed at the top of sandstone reservoir, improve oil stream direction, bottom water water logging is transformed into bottom water drive
Oil greatly improves the success rate of control water volume increase.
Specific implementation mode
Embodiment 1：
A kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir, includes the following steps：
1）The nano combined high-strength blocking agent that mass parts are 40-70 parts and the clear water that mass parts are 50 parts are mixed to form suspension；
The nano combined high-strength blocking agent is by the superfine cement of mass ratio 70%-90%, the nanometer strengthener and quality of mass ratio 1%-30%
Retarder mixture than 1%-20% forms；The grain size of the superfine cement is 0.2 μm -20 μm；The nanometer strengthener is by hydrophilic
Type nano silicon dioxide and lipophilic nano silicon dioxide mix, hydrophilic nano-silicon dioxide and lipophilic nano-silica
The mass ratio of SiClx is 3：1~1：3；The retarder is larch sulfonation tannin extract, and larch sulfonation tannin extract is tannin and non-tannis
Sulfonated products；
2）By step 1 under the conditions of 0-90 DEG C）Suspension inject stratum, to water outlet position and cracking initiation block；
3）With clear water, by the suspension in the pit shaft of stratum, all balance is replaced into oil reservoir；
4）It closes oil well and waits solidifying crack and the water stream channel for making the solid of suspension formation expansion block in oil reservoir；The step
4）Middle suspension need to react the solid that expansion is formed after 5-72h under the conditions of 0-90 DEG C of formation temperature.
5）Lead to oil well to shaft bottom；
6）With cementing truck pressure testing until pressure testing is qualified；
7）Reservoir is set to form diameter to carrying out radial hydraulic jetting fracturing at the top of oil reservoir sand body using hydraulic jetting fracturing tool
To horizontal fracture；
8）Oil well suction is opened, by oil field pumping criteria program, suction operation is carried out to oil well.
The step 1）It is middle that nano combined high-strength blocking agent and clear water are mixed to form by suspension, step 2 using cementing truck）With
Step 3）It is middle that suspension and clear water are injected by stratum using Frac unit or cementing truck, and injection pressure power is pumped when injection to be no more than ground
Subject to the 80% of layer fracture pressure.
The step 6）It is qualification that middle pressure testing is less than 0.5MPa with half an hour well mouth of oil well pressure drop, if pressure testing is unqualified, weight
Multiple above-mentioned steps 1）To step 5）Until pressure testing is qualified.
Beneficial effects of the present invention：
1, the highly aqueous well control water method for increasing of this hyposmosis bottom water reservoir provided by the invention, by nano combined high-strength stifled
The proprietary characteristic of agent, by eight steps, when solving existing water-plugging technique construction, Polymer Plugging Agent intensity is low or conventional water
It is easily shunk after the solidification of mud class blocking agent, it is low with formation cementation intensity, the problem of follow-up well stimulation requirement cannot be met.This method is special
Not Shi Yongyu hyposmosis bottom water reservoir high-water-cut oil-producing well, have a good application prospect.
2, the nano combined high-strength blocking agent configuration that the present invention uses is simple, and the thickening time is controllable, can adjust according to the design needs
Control the thickening time；Microdilatancy after the addition of nano material makes the blocking agent cure, and substantially increase cementing strength and pressure resistance
Degree.
3, the radial hydro-jet fracturing technology that the present invention uses is carried out being stitched to primary fissure using nano combined high-strength blocking agent
After closure, radial level crack can be formed at the top of sandstone reservoir, improve oil stream direction, bottom water water logging is transformed into bottom water drive
Oil greatly improves the success rate of control water volume increase.
Embodiment 2：
A kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir, includes the following steps：
1）50 parts of 50 parts of nano combined high-strength blocking agent and clear water are mixed to form stable suspension；The nano combined high-strength blocking agent
The retarder mixture of nanometer strengthener and mass ratio 10% that the superfine cement for being 70% by mass ratio, mass ratio are 20% forms institute
It is existing product, 10 μm of grain size to state superfine cement；The nanometer strengthener is received by hydrophilic nano-silicon dioxide and lipophilic
Rice silica in mass ratio 1：The mixture of 1 composition；The retarder refers to larch sulfonation tannin extract, and main component is single
The sulfonated products of peace non-tannis.
2）By step 1 under the conditions of 80 DEG C）Nano combined high-strength blocking agent suspension inject stratum, to water outlet position and split
Slit is at closure；
3）With clear water, by the nano combined high-strength blocking agent suspension in the pit shaft of stratum, all balance is replaced into oil reservoir；
4）It closes oil well and waits solidifying, under the conditions of 80 DEG C of formation temperature, reaction forms micro- swollen nano combined high-strength blocking agent suspension afterwards for 24 hours
Swollen high intensity solid blocks the water stream channel of microcrack and matrix in reservoir, realizes effective closure to high-water-cut oil-producing well；
5）Logical oil well is such as hampered to shaft bottom, lower abrasive drilling tubing string abrasive drilling to shaft bottom；
6）With cementing truck pressure testing, it is qualification that half an hour well head pressure drop, which is less than 0.5MPa, if pressure testing is unqualified, repeats the above steps 1）
To step 5）, until pressure testing is qualified；
7）Reservoir is set to form diameter to carrying out radial hydraulic jetting fracturing at the top of oil reservoir sand body using hydraulic jetting fracturing tool
To horizontal fracture；Using hydraulic jetting fracturing tool to carrying out radial hydraulic jetting fracturing at the top of sandstone reservoir, promote reservoir shape
Radially horizontal fracture improves oil stream direction, and bottom water water logging is transformed into the bottom water displacement of reservoir oil as far as possible, improves volume increase success rate；
8）Oil well suction is opened, by oil field pumping criteria program, suction operation is carried out to oil well.
The step 1）It is middle that nano combined high-strength blocking agent and clear water are mixed to form by suspension, step 2 using cementing truck）With
Step 3）It is middle that suspension and clear water are injected by stratum using Frac unit or cementing truck, and injection pressure power is pumped when injection to be no more than ground
Subject to the 80% of layer fracture pressure.
The step 8）In, it directly goes into operation after verifying measure effect.
Embodiment 3：
A kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir, includes the following steps：
1）50 parts of 70 parts of nano combined high-strength blocking agent and clear water are mixed to form stable suspension；The nano combined high-strength blocking agent
It is formed by the retarder mixture of the superfine cement of mass ratio 80%, the nanometer strengthener of mass ratio 15% and mass ratio 5%；It is described super
Thin cement is existing product, 20 μm of particle size range；The nanometer strengthener is received by hydrophilic nano-silicon dioxide and lipophilic
Rice silica in mass ratio 1：The mixture of 1 composition；The retarder refers to larch sulfonation tannin extract, and main component is single
The sulfonated products of peace non-tannis；
2）By step 1 under the conditions of 50 DEG C）Nano combined high-strength blocking agent suspension inject stratum, to water outlet position and crack shape
At closure；
3）With clear water, by the nano combined high-strength blocking agent suspension in the pit shaft of stratum, all balance is replaced into oil reservoir；
4）Close oil well wait it is solidifying, nano combined high-strength blocking agent suspension under the conditions of 50 DEG C of formation temperature, react formed after 48h it is micro- swollen
Swollen high intensity solid blocks the water stream channel of microcrack and matrix in reservoir, realizes effective closure to high-water-cut oil-producing well；
5）Logical oil well is such as hampered to shaft bottom, lower abrasive drilling tubing string abrasive drilling to shaft bottom；
6）With cementing truck pressure testing, it is qualification that half an hour well head pressure drop, which is less than 0.5MPa, if pressure testing is unqualified, repeats the above steps 1）
To step 5）, until pressure testing is qualified；
7）Reservoir is set to form diameter to carrying out radial hydraulic jetting fracturing at the top of oil reservoir sand body using hydraulic jetting fracturing tool
To horizontal fracture；Using hydraulic jetting fracturing tool to carrying out radial hydraulic jetting fracturing at the top of sandstone reservoir, promote reservoir shape
Radially horizontal fracture improves oil stream direction, and bottom water water logging is transformed into the bottom water displacement of reservoir oil as far as possible, improves volume increase success rate；
8）Oil well suction is opened, by oil field pumping criteria program, suction operation is carried out to oil well.
The step 1）It is middle that nano combined high-strength blocking agent and clear water are mixed to form by suspension, step 2 using cementing truck）With
Step 3）It is middle that suspension and clear water are injected by stratum using Frac unit or cementing truck, and injection pressure power is pumped when injection to be no more than ground
Subject to the 80% of layer fracture pressure.
The step 8）In, it directly goes into operation after verifying measure effect.
Embodiment 4：
A kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir, includes the following steps：
1）50 parts of 50 parts of nano combined high-strength blocking agent and clear water are mixed to form stable suspension；The nano combined high-strength blocking agent
It is formed by the retarder mixture of the superfine cement of mass ratio 70%, the nanometer strengthener of mass ratio 20% and mass ratio 10%, it is described super
Thin cement is existing product, and 0.2 μm of particle size range, the nanometer strengthener is received by hydrophilic nano-silicon dioxide and lipophilic
Rice silica in mass ratio 1：The mixture of 1 composition, the retarder refer to larch sulfonation tannin extract, and main component is single
The sulfonated products of peace non-tannis；
2）By step 1 under the conditions of 60 DEG C）Nano combined high-strength blocking agent suspension inject stratum, to water outlet position and crack shape
At closure；
3）With clear water, by the nano combined high-strength blocking agent suspension in the pit shaft of stratum, all balance is replaced into oil reservoir；
4）Close oil well wait it is solidifying, nano combined high-strength blocking agent suspension under the conditions of 60 DEG C of formation temperature, react formed after 48h it is micro- swollen
Swollen high intensity solid blocks the water stream channel of microcrack and matrix in reservoir, realizes effective closure to high-water-cut oil-producing well；
5）Logical oil well is such as hampered to shaft bottom, lower abrasive drilling tubing string abrasive drilling to shaft bottom；
6）With cementing truck pressure testing, it is qualification that half an hour well head pressure drop, which is less than 0.5MPa, if pressure testing is unqualified, repeats the above steps 1）
To step 5）, until pressure testing is qualified；
7）Reservoir is set to form diameter to carrying out radial hydraulic jetting fracturing at the top of oil reservoir sand body using hydraulic jetting fracturing tool
To horizontal fracture；Using hydraulic jetting fracturing tool to carrying out radial hydraulic jetting fracturing at the top of sandstone reservoir, promote reservoir shape
Radially horizontal fracture improves oil stream direction, and bottom water water logging is transformed into the bottom water displacement of reservoir oil as far as possible, improves volume increase success rate；
8）Oil well suction is opened, by oil field pumping criteria program, suction operation is carried out to oil well.
The step 1）It is middle that nano combined high-strength blocking agent and clear water are mixed to form by suspension, step 2 using cementing truck）With
Step 3）It is middle that suspension and clear water are injected by stratum using Frac unit or cementing truck, and injection pressure power is pumped when injection to be no more than ground
Subject to the 80% of layer fracture pressure.
The step 8）In, it directly goes into operation after verifying measure effect.
Embodiment 5：
A kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir, includes the following steps：
1）50 parts of 50 parts of nano combined high-strength blocking agent and clear water are mixed to form stable suspension；The nano combined high-strength blocking agent
It is formed by the retarder mixture of the superfine cement of mass ratio 75%, the nanometer strengthener of mass ratio 1% and mass ratio 1%, it is described ultra-fine
Cement is existing product, and 15 μm of particle size range, the nanometer strengthener is by hydrophilic nano-silicon dioxide and lipophilic nanometer
Silica in mass ratio 1：The mixture of 1 composition, the retarder refers to larch sulfonation tannin extract, and main component is tannin
With the sulfonated products of non-tannis；
2）By step 1 under the conditions of 40 DEG C）Nano combined high-strength blocking agent suspension inject stratum, to water outlet position and crack shape
At closure；
3）With clear water, by the nano combined high-strength blocking agent suspension in the pit shaft of stratum, all balance is replaced into oil reservoir；
4）Close oil well wait it is solidifying, nano combined high-strength blocking agent suspension under the conditions of 40 DEG C of formation temperature, react formed after 48h it is micro- swollen
Swollen high intensity solid blocks the water stream channel of microcrack and matrix in reservoir, realizes effective closure to high-water-cut oil-producing well；
5）Logical oil well is such as hampered to shaft bottom, lower abrasive drilling tubing string abrasive drilling to shaft bottom；
6）With cementing truck pressure testing, it is qualification that half an hour well head pressure drop, which is less than 0.5MPa, if pressure testing is unqualified, repeats the above steps 1）
To step 5）, until pressure testing is qualified；
7）Reservoir is set to form diameter to carrying out radial hydraulic jetting fracturing at the top of oil reservoir sand body using hydraulic jetting fracturing tool
To horizontal fracture；Using hydraulic jetting fracturing tool to carrying out radial hydraulic jetting fracturing at the top of sandstone reservoir, promote reservoir shape
Radially horizontal fracture improves oil stream direction, and bottom water water logging is transformed into the bottom water displacement of reservoir oil as far as possible, improves volume increase success rate；
8）Oil well suction is opened, by oil field pumping criteria program, suction operation is carried out to oil well.
The step 1）It is middle that nano combined high-strength blocking agent and clear water are mixed to form by suspension, step 2 using cementing truck）With
Step 3）It is middle that suspension and clear water are injected by stratum using Frac unit or cementing truck, and injection pressure power is pumped when injection to be no more than ground
Subject to the 80% of layer fracture pressure.
The step 8）In, it directly goes into operation after verifying measure effect.
The hydrophilic nano-silicon dioxide and lipophilic nano silicon dioxide of 1-5 of the embodiment of the present invention is existing product,
It can be bought in market.
Specific implementation process of the present invention：
1, according to wellfracturing operation and refracturing transformation and geologic feature data and consider blocking agent block efficiency, calculate institute
Need nano combined high-strength plug agent amount；
2, according to laboratory experiment as a result, determining the optium concentration of nano combined high-strength blocking agent each component；
3, according to the geologic feature for blocking reservoir, specific plug water construction scheme is formulated, it is main to determine discharge capacity and maximum pressure two
The determination of a parameter, especially pressure should be subject to no more than the 80% of formation fracture pressure.
4, it is designed according to plug water construction and completes plug water construction, use when construction clear water formation testing to absorb water situation first, accordingly
The injection discharge capacity and ground pump pressure for determining plug water construction, then note nano combined high-strength blocking agent, completion pair according to pump note scheme pump
The plug water construction of service shaft；
5, drifting is such as hampered to shaft bottom, lower abrasive drilling tubing string abrasive drilling to shaft bottom；
6, with cementing truck pressure testing, it is qualification that half an hour well head pressure drop, which is less than 0.5MPa, if pressure testing is unqualified, repeats above-mentioned 1 ~ 5 step
Suddenly, until pressure testing is qualified；
7, hydraulic jetting fracturing construction is completed according to hydraulic jetting fracturing detail design；
8, according to oil field pumping criteria program, suction operation is carried out to oil well, verifies effect of increasing production.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
Be with the present invention it is same or analogous design all belong to the scope of protection of the present invention within.
Claims (9)
1. a kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir, which is characterized in that include the following steps：
The nano combined high-strength blocking agent that mass parts are 40-70 parts and the clear water that mass parts are 50 parts are mixed to form suspension；
By step 1 under the conditions of 0-90 DEG C）Suspension inject stratum, to water outlet position and cracking initiation block；
With clear water, by the suspension in the pit shaft of stratum, all balance is replaced into oil reservoir；
It closes oil well and waits solidifying crack and the water stream channel for making the solid of suspension formation expansion block in oil reservoir；
5）Lead to oil well to shaft bottom；
6）With cementing truck pressure testing until pressure testing is qualified；
7）Reservoir is set to form diameter to carrying out radial hydraulic jetting fracturing at the top of oil reservoir sand body using hydraulic jetting fracturing tool
To horizontal fracture；
8）Oil well suction is opened, by oil field pumping criteria program, suction operation is carried out to oil well.
2. the highly aqueous well control water method for increasing of hyposmosis bottom water reservoir as described in claim 1, it is characterised in that：It is described to receive
Rice composite high-strength blocking agent is by the superfine cement of mass ratio 70%-90%, the nanometer strengthener of mass ratio 1%-30% and mass ratio 1%-
20% retarder mixture forms.
3. the highly aqueous well control water method for increasing of hyposmosis bottom water reservoir as claimed in claim 2, it is characterised in that：It is described super
The grain size of thin cement is 0.2 μm -20 μm.
4. the highly aqueous well control water method for increasing of hyposmosis bottom water reservoir as claimed in claim 3, it is characterised in that：It is described to receive
Rice reinforcing agent mixed by hydrophilic nano-silicon dioxide and lipophilic nano silicon dioxide, hydrophilic nano-silicon dioxide and
The mass ratio of lipophilic nano silicon dioxide is 3：1~1：3.
5. the highly aqueous well control water method for increasing of hyposmosis bottom water reservoir as claimed in claim 4, it is characterised in that：The parent
The mass ratio of water type nano silicon dioxide and lipophilic nano silicon dioxide is 1：1.
6. the highly aqueous well control water method for increasing of hyposmosis bottom water reservoir as claimed in claim 5, it is characterised in that：It is described slow
Solidifying agent is larch sulfonation tannin extract, and larch sulfonation tannin extract is the sulfonated products of tannin and non-tannis.
7. the highly aqueous well control water method for increasing of hyposmosis bottom water reservoir as claimed in claim 6, it is characterised in that：The step
Rapid 1）It is middle that nano combined high-strength blocking agent and clear water are mixed to form by suspension, step 2 using cementing truck）With step 3）It is middle to use pressure
Pump injection pressure power is with no more than formation fracture pressure when splitting unit or cementing truck and suspension and clear water are injected stratum, and injecting
Subject to 80%.
8. the highly aqueous well control water method for increasing of hyposmosis bottom water reservoir as claimed in claim 7, it is characterised in that：The step
Rapid 4）Middle suspension need to react the solid that expansion is formed after 5-72h under the conditions of 0-90 DEG C of formation temperature.
9. the highly aqueous well control water method for increasing of hyposmosis bottom water reservoir as claimed in claim 8, it is characterised in that：The step
Rapid 6）It is qualification that middle pressure testing is less than 0.5MPa with half an hour well mouth of oil well pressure drop, if pressure testing is unqualified, repeats the above steps 1）Extremely
Step 5）Until pressure testing is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491995.4A CN108625836B (en) | 2018-05-22 | 2018-05-22 | Water control and yield increase method for low-permeability bottom water reservoir high-water-content oil well |
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| CN110500080A (en) * | 2019-09-20 | 2019-11-26 | 四川洁能锐思石油技术有限公司 | A kind of high permeability zone bottom water coning shuts down stifled dredge of well and adopts control comprehensive processing method |
| CN111206902A (en) * | 2020-01-22 | 2020-05-29 | 中国石油天然气股份有限公司 | Water control synergistic transformation method for screen pipe well completion horizontal well |
| CN114562239A (en) * | 2022-03-07 | 2022-05-31 | 吉林大学 | Method and device for improving hydrate reservoir exploitation efficiency by adopting nanofluid |
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| CN108625836B (en) | 2021-01-29 |
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