CN209086218U - A kind of experimental provision can be used for induced fractures leakage blockage simulation assessment - Google Patents
A kind of experimental provision can be used for induced fractures leakage blockage simulation assessment Download PDFInfo
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Abstract
The utility model provides a kind of experimental provision that can be used for induced fractures leakage blockage simulation assessment, including high-pressure air source, fluid infusion pond, sealant supplement cylinder, leak stopping flow container, leakage blockage simulation chamber, slush pump, circulatory pool, hopper, valve and pipeline；Wherein leakage blockage simulation chamber includes outer cylinder and crack module, the crack module includes cylinder, pipe joint, plays tongue baffle, spring and play tongue piece, export pipeline and aciculiform bolt, and the threaded openings that the pipe joint and outer cylinder top at the top of cylinder are equipped with, which are constituted, is tightly connected cooperation.The utility model is characterized in that analog circulation of drilling fluid washes away the blocking layer of formation, to evaluate the leak stopping lasting shut-off capacity of blocking layer during subsequent drill after the completion；The reverse pressure-bearing ability of plugging material can also be evaluated；Meanwhile crack module Size of Crack can change according to pressure size, simulate the induced fractures variation on stratum, and then for evaluating plugging material to the plugging effect of induced fractures.
Description
Technical field
It is specifically a kind of to can be used for induced fractures leak stopping the utility model relates to a kind of oil drilling field of test instrument
The experimental provision of Simulation evaluation.
Background technique
Leak-proof leak-stopping indoor evaluation method is the important laboratory facilities of appraisal drilling liquid and leak-proof leak-stopping material result.And it is somebody's turn to do
What method was mainly realized by leakage blockage simulation assessment instrument.For many years, domestic universities and colleges and oil field research institution be also always
It is dedicated to the research work of leakage blockage simulation assessment instrument, has developed instrument, device that more sets have preferable evaluation effect in succession.
DL type as Wang Zhonghua mentions in " complexity leakage stratum leakage stopping technology status and developing direction " (middle outer energy, 2014) text is stifled
Leakage test apparatus and the leak-stopping instrument that leakage stratum and Process of Leaking Stoppage can be simulated.Wherein, DL-1 is filled using casting bed, DL-2
Use artificial core.DL-1 and DL-2 leak stopping instrument can more true simulation Underwell leakage situation, can directly observe leak stopping
Effect.Mountain elasticity, rigidity and the fiber-like material obtained by Simulation evaluation be reasonably combined and partial size reasonable layout it is compound
The fast and effective closure of porosity, slit formation leakage may be implemented in plugging material.For another example Lv Kaihe is in doctoral thesis " spudder
In journey leakage prevention and leakage stopping technology research and apply " in high temperature and pressure (HTHP) leakage blockage simulation experimental provision for mentioning.HTHP
Leakage blockage simulation experimental provision can simulate the dynamic and static state plugging effect of leak-proof sealing agent and drilling fluid, after can evaluating closure
Rock core or crack bearing capacity (0~40MPa of operating pressure, operating temperature room temperature~180 DEG C, 0~1000s-1 of shear rate,
Leakage medium is artificial core, natural core or results of fracture simulation block), experimental result collimation is good, and experimental result has practice
Directive significance.For another example professional standard SY/T5840-93 " drilling well bridge joint plugging material Experimental Method in Laboratory " in 1993 is
It is formulated referring to API standard, this standard defines the prepared leak stopping slurry plugs difference leakage of drilling well bridge joint plugging material
The test method in channel, the experimental rig pressure limit in the standard are 0 ~ 7MPa.These evaluation appts are in different ranges
Preferable Simulation evaluation effect is embodied, but when for certain type of leakage evaluation, there is also some problems have improved
Space.
Utility model content
The purpose of this utility model is in view of the deficienciess of the prior art, providing one kind can be used for induced fractures leak stopping mould
The experimental provision of quasi- evaluation, forms the process of plugged zone for simulated leaking stoppage material, in turn by bridging action in formation fracture
Go out the plugging effect of plugging material according to metrics evaluations such as pressure, wastages.
For the attainment of one's purpose, the technical solution of the utility model is achieved in that
A kind of drilling fluid leakage blockage simulation assessment device in fixed crack, including high-pressure air source, fluid infusion pond, sealant supplement cylinder, leak stopping
Flow container, leakage blockage simulation chamber, slush pump, circulatory pool, hopper, valve and pipeline；The leakage blockage simulation chamber includes outer cylinder and crack
Module, outer cylinder are closed hollow cylinder, and outer cylinder top is equipped with threaded openings, and outer cylinder bottom is connected with reverse pressure-bearing liquid inlet valve
Door and leakage-stop liquid outlet valve；The crack module includes cylinder, pipe joint is equipped at the top of cylinder, cylinder inboard wall is along axial right
Claim setting two groups of bullet tongue baffles, two groups of bullet tongue baffle opposite ends form crack, and spring is arranged between every group of bullet tongue baffle and plays tongue
Piece, plays tongue piece and bullet tongue baffle composition is radial mating, at the top of cylinder body bottom setting export pipeline and aciculiform bolt, cylinder
Pipe joint and the threaded openings that are equipped with of outer cylinder top constitute and be tightly connected cooperation；Wherein, high-pressure air source, fluid infusion pond, fluid infusion
Tank, leak stopping flow container, crack module, leakage blockage simulation chamber constitute positive bearing capacity and survey after connecting with batch box by pipeline and valve
Test system；High-pressure air source, fluid infusion pond, sealant supplement cylinder, reverse pressure-bearing liquid imported valve, leakage blockage simulation chamber and batch box by pipeline and
Reverse pressure-bearing energy test macro is constituted after valve connection；Slush pump, leakage blockage simulation chamber, crack module and circulatory pool by pipeline and
Closed loop blocking layer flushing system is constituted after valve connection.
Above scheme further comprises:
It is connected with aciculiform bolt on the cylinder body bottom fairlead of crack module, is equipped with sealing at the top of cylinder outside pipe joint
Part, the crack in the middle part of cylinder are parallel fracture at corresponding two.
Heating mantle and temperature regulating device are provided with outside the leak stopping flow container, leakage blockage simulation chamber and circulatory pool.
Safety valve is provided on pipeline between sealant supplement cylinder and leak stopping flow container, the sealant supplement cylinder and leak stopping flow container are piston
The liquid of formula pressurized tank, the fluid infusion pond and sealant supplement cylinder includes one kind of water, drilling fluid, ethylene glycol or glycerine.
The cylinder body bottom fairlead lower end of crack module is connected with valve, is divided to two branches to be respectively equipped with valve after the valve
Door makes leakage-stop liquid and drilling fluid respectively enter hopper and circulating tank by closing for three valves；The efferent duct of leak stopping flow container
Road is divided into two branches by valve, and a branch is connected by valve with slush pump, and two branches pass through valve and crack module
It is connected, and is provided with relief valve on two roads.
The Simulation evaluation experimental provision of the utility model, in which:
The effect of clean water tank is that downstream pipeline applies pressure, built-in piston in tank, initial shape using clear water as medium
State lower piston is located at tank top, and piston lower portion fills clear water, and top connects pond and pressure gas source, high pressure with valve by pipeline
Strength source, which is pushed, by the clear water that pond enters in pipeline to be pressed clean water tank piston moves downward, and the clear water in clean water tank is pressed to
Downstream pipe.
Leak stopping flow container built-in piston, is equipped with leakage-stop liquid under piston, and when beginning, piston is located at top of the tank position, then exists
Under the effect of upstream pressure, piston is moved down, and leakage-stop liquid is pushed to enter in the leakage blockage simulation chamber of downstream, is surrounded by outside leakage-stop liquid tank
Heating mantle and temperature control equipment can heat leakage-stop liquid, simulated formation temperature.
Leakage blockage simulation chamber includes outer cylinder and crack module, and outer cylinder is hollow cylinder, and upper middle position has threaded openings, under
Portion is connected with pipeline.Crack module can be rotated into outer cylinder by outer cylinder upper opening, and by thread seal, and added with guarantor
Protecting cover；The pipe joint of crack module and outer cylinder thread contact be under small big construction, therefore crack module pipe joint only has
Part enters outer cylinder, the purpose for the arrangement is that in order to increase leakproofness, while being convenient for the sealing of upper pipeline and crack module；It splits
Slit die block lower part is directly connected with pipeline, and passes through in outer cylinder bottom, is sealed using the bolt on pipeline with outer cylinder.Leak stopping
It is surrounded by heating mantle and temperature control equipment outside simulation chamber, leakage-stop liquid can be heated, simulated formation temperature.
Crack module includes pipe joint, cylinder, plays tongue piece, spring, plays tongue baffle, export pipeline, aciculiform bolt.Pipeline
Connector is in up big and down small cone, has screw thread, can be used for sealing with leakage blockage simulation chamber outer cylinder, pipe joint top center position
Be equipped with opening, can connecting line, and become leakage-stop liquid carry out crack module channel；Cylinder is hollow, configured with bullet tongue piece, bullet
Spring plays tongue baffle；A part that tongue baffle is barrel wall is played, inner hollow is provided with spring and plays tongue piece；Playing tongue baffle is
Corresponding a pair, centre form crack, and playing tongue piece, in the activity in tongue baffle that plays, can play two in tongue baffle under spring pressure
Group plays tongue piece and forms microscopic checks in the initial state, and under a certain pressure, playing tongue piece can press to spring one end, hence into
A part in tongue baffle is played, is become larger so that playing the fracture width that tongue piece is formed, maximum width is that two groups of bullet tongue baffles are formed by
Slit width, this process are the processes expanded under external force for the induced fractures in simulated formation, so that more true simulation lures
Lead the Process of Leaking Stoppage in crack；Export pipeline can be the outlet of leakage-stop liquid, the effect of aciculiform bolt when implementing reverse pressure-bearing test
It is to guarantee that export pipeline and leakage blockage simulation chamber outer cylinder seal.
Mud pumping action is the crack module that the drilling fluid in circulatory pool is pumped into pipeline, and enters leakage blockage simulation chamber, is led to
Later circulatory pool is entered back into, forms the circulation of drilling fluid, and using the speed for being pumped into flow control circulation of drilling fluid, fracture
The leak stopping layer that module has been formed is washed away, and the leak stopping layer plugging effect after washing away is investigated, thus after simulated leaking stoppage layer is formed,
Influence of the drilling fluid to leak stopping layer avoids the generation for repeating to miss.It is surrounded by heating mantle and temperature control equipment outside circulatory pool, it can be right
Leakage-stop liquid is heated, simulated formation fluid temperature (F.T.).
The present apparatus further includes relief valve, it is ensured that safe operation.
The present apparatus when can be formed by leak stopping layer accessible maximum pressure and wastage evaluate the leak stopping effect of leakage-stop liquid
Fruit, meanwhile, the pipeline also connected using outer cylinder lower part pressurizes to outer cylinder inner space, to split in crack module
The leak stopping layer formed at seam carries out reverse pressure-bearing test, investigates the shut-off capacity of leak stopping layer.
The utility model has the advantage of analog circulation of drilling fluid washes away the blocking layer of formation, to evaluate
After the completion of leak stopping during subsequent drill the lasting shut-off capacity of blocking layer；The reverse pressure-bearing energy of plugging material can also be evaluated
Power；Meanwhile crack module Size of Crack can change according to pressure size, so that the induced fractures for simulating stratum become
Change, and then for evaluating plugging material to the plugging effect of induced fractures.The utility model design is simple, easy to operate.
Detailed description of the invention
Fig. 1 is a kind of experimental provision structural schematic diagram that can be used for induced fractures leakage blockage simulation assessment.
Fig. 2 is crack module diagram.
Specific embodiment
The utility model structure and application method are illustrated in conjunction with Fig. 1, Fig. 2.
Referring to attached drawing 1, a kind of experimental provision can be used for induced fractures leakage blockage simulation assessment includes high-pressure air source 1, pond
2, clean water tank 5, leak stopping flow container 7, leakage blockage simulation chamber 14, slush pump 10, circulatory pool 11, hopper 19, valve and pipeline；Wherein,
High-pressure air source 1 is connected by valve 3 with pond 2, is connected by valve 4 with clean water tank 5, pond pass through valve 3, valve 4 with clearly
Water pot 5 is connected；Clean water tank 5 is connected by valve 6 with leak stopping flow container 7, is connected by valve 17 with leakage blockage simulation chamber 14, clean water tank
Safety valve 21 is provided between 5 and valve 6, the pressure release when loine pressure reaches certain pressure；Leak stopping flow container 7 passes through valve 8, valve
9 are connected with slush pump 10, are connected by valve 13 with leakage blockage simulation chamber 14, relief valve 12 is provided between valve 8 and valve 13；It is stifled
Stripping pattern intends 14 lower part of chamber and is provided with leakage-stop liquid outlet valve 20, and leakage-stop liquid can be made to enter batch box 19,14 lower part of leakage blockage simulation chamber
It is additionally provided with reverse pressure-bearing liquid imported valve 17, is connected with clean water tank 5, leakage blockage simulation chamber 14 is internally provided with crack module 15,
15 top of crack module and the pipeline of valve 13 are connected directly, and module 15 lower part in crack is connected with valve 16, and valve 16 is connected with valve
Door 18 and valve 22, can closing by three valves, so that leakage-stop liquid and drilling fluid is respectively enterd hopper 19 and circulating tank 11；
Leak stopping flow container 7, leakage blockage simulation chamber 14,11 outsourcing heating mantle of circulatory pool and temperature regulating device heat leakage-stop liquid and drilling fluid, are used for
Simulated formation temperature.
Referring to Fig. 2, induced fractures leakage module includes pipe joint 151, cylinder 152, plays tongue piece 153, spring 154, bullet
Tongue baffle 155, export pipeline 156, aciculiform bolt 157.Wherein, pipe joint 151 is in up big and down small cone, has spiral shell
There are opening in line, top center position；Cylinder 152 is hollow, is provided with and plays tongue piece 153, spring 154, plays tongue baffle 155；Play tongue gear
Plate 155 is a part of barrel wall, and inner hollow is provided with spring 154 and plays tongue piece 153；It is corresponding for playing tongue baffle 155
A pair, centre form crack, and playing tongue piece 153, in the activity in tongue baffle 155 that plays, can play tongue baffle 155 under 154 pressure of spring
In two groups of bullet tongue pieces 153 form crack in the initial state, when device pressurizes, playing tongue piece 153 can apply to 154 one end of spring
Pressure becomes larger hence into a part in tongue baffle 155 is played so that playing the fracture width that tongue piece 153 is formed, and maximum width is two groups
It plays tongue baffle 155 and is formed by slit width.152 lower part of cylinder is connected with export pipeline 156 and aciculiform bolt 157.
In use, leakage-stop liquid enters 152 cavity of cylinder from 151 top opening of pipe joint, then bullet tongue piece 153 is applied
Pressure, playing tongue piece 153, in the activity in tongue baffle 155 that plays, can play two groups of bullet tongue pieces in tongue baffle 155 under 154 pressure of spring
153 form crack in the initial state, and when device pressurizes, playing tongue piece 153 can press to 154 one end of spring, hence into bullet tongue
It is a part of in baffle 155, become larger so that playing the fracture width that tongue piece 153 is formed, maximum width is two groups of bullet tongue baffles, 155 shapes
At slit width.
Four kinds of tests, positive bearing capacity test can be carried out when Simulation evaluation experimental provision use, reverse pressure-bearing test is blocked up
Positive pressure-bearing after layer washes away tests the reverse pressure-bearing test after washing away with blocking layer.
Positive bearing capacity test is in use, be first turned on valve 3, valve 4, valve 6, valve 8, valve 13, valve 20
(being in close state using preceding all valves), the clear water in pond 2 enter pipeline, then using high-pressure air source to the clear of pipeline
Water pressurization, pushes the piston in clean water tank 5 to move down, and so that clean water tank 5 is obtained clear water and is pressurized, then 7 piston of leak stopping flow container is pushed to move down, pushes away
Leakage-stop liquid in dynamic leakage tank 7 moves down, and enters in the crack module 15 of leakage blockage simulation chamber 14 by valve 8, valve 13, and passes through
Crack in crack module 15, in the process, plugging material form leak stopping layer at crack, partially pass through the leakage-stop liquid in crack
The cavity that leakage blockage simulation chamber 14 can be entered, enters batch box 19 using pipeline locating for valve 20, to measure leakage liquid
Product, at this point, recordable place's high-pressure air source pressure applied, as born pressure.After the completion of test, high-pressure air source can be closed
1 and valve 3, by carrying out disassembly, cleaning to device after 12 pressure release of relief valve.It is high-pressure air source 1, pond 2, valve 3, valve 4, clear
Contained pipeline and valve between water pot 5, valve 6, leak stopping flow container 7, valve 8, valve 13, leakage blockage simulation chamber 14, valve 16, valve 20
3,4,6,8,13,16,20 positive bearing capacity test valve and pipeline are constituted.Meanwhile high-pressure air source 1, pond 2, valve 3, valve
Door 4, clean water tank 5, valve 6, leak stopping flow container 7, valve 8, valve 13, leakage blockage simulation chamber 14, valve 16, valve 20 and each component
Between contained pipeline and batch box 19 constitute positive bearing capacity test macro.
Reverse pressure-bearing test in use, can positive pressure pressure-bearing complete on the basis of release loine pressure, be then shut off each valve
Door, then valve 3, valve 4, valve 17, valve 16, valve 18 are opened, it is pressed pipeline (with positive pressure pressure-bearing using high-pressure air source 1
Test), push the clear water (i.e. reverse pressure-bearing liquid) in clean water tank 5 to enter the cavity of leakage blockage simulation chamber 14, and fracture module 15
Crack at leak stopping layer pressure, the maximum pressure that leak stopping layer is not punctured by pressure, as reverse pressure-bearing；After leak stopping layer is breakdown,
Clear water can be entered batch box 19, and be measured by the inner space of crack module 15 and valve 16, valve 18；After the completion,
It can be dismantled after the 20 pairs of pipeline pressure releases of valve opening door.High-pressure air source 1, pond 2, valve 3, valve 4, clean water tank 5, valve 17, leak stopping mould
Contained pipeline and valve 3,4,17,16,18,22 constitute reverse pressure-bearing and can test between quasi- chamber 14, valve 16, valve 18, valve 22
Valve and pipeline.Meanwhile high-pressure air source 1, pond 2, valve 3, valve 4, clean water tank 5, valve 17, leakage blockage simulation chamber 14, valve
16, contained pipeline, batch box 19 constitute reverse pressure-bearing energy test macro between valve 18, valve 22 and each component.
Blocking layer wash away after positive pressure-bearing test in use, can positive pressure pressure-bearing complete on the basis of release loine pressure,
It is then shut off each valve, then valve opening door 9, valve 13, valve 16, valve 22, is broken the drilling fluid in circulatory pool by slush pump
Enter into pipeline, and flow through the leak stopping layer at 15 crack of crack module, it is washed away, then in returning to circulatory pool.
After completing this operation, each valve is turned off, then tests positive bearing capacity by positive bearing capacity testing procedure again.
Blocking layer wash away after positive pressure-bearing test in use, can positive pressure pressure-bearing complete on the basis of release loine pressure,
It is then shut off each valve, then valve opening door 9, valve 13, valve 16, valve 22, is broken the drilling fluid in circulatory pool by slush pump
Enter into pipeline, and flow through the leak stopping layer at 15 crack of crack module, it is washed away, then in returning to circulatory pool.
After completing this operation, each valve is turned off, then tests reverse pressure-bearing ability by reverse pressure-bearing aptitude tests step again.Slush pump
10, valve 9, valve 13, leakage blockage simulation chamber 14, valve 16, valve 18,22 pipelines of valve and valve 9, valve 13, leak stopping mould
Quasi- chamber 14, valve 16, valve 18, valve 22 constitute blocking layer and wash away valve and pipeline.Slush pump 10, valve 9, valve 13, leak stopping
Contained pipeline, circulatory pool 11 constitute blocking layer flushing system between simulation chamber 14, valve 16, valve 18, valve 22 and each component.
Claims (5)
1. a kind of experimental provision that can be used for induced fractures leakage blockage simulation assessment, including it is high-pressure air source, fluid infusion pond, sealant supplement cylinder, stifled
Leakage tank, leakage blockage simulation chamber, slush pump, circulatory pool, hopper, valve and pipeline；It is characterized by: the leakage blockage simulation chamber packet
Outer cylinder and crack module are included, outer cylinder is closed hollow cylinder, and outer cylinder top is equipped with threaded openings, and outer cylinder bottom is connected with reversely
Supporting roll imported valve and leakage-stop liquid outlet valve；The crack module includes cylinder, is equipped with pipe joint, cylinder at the top of cylinder
Inner wall two groups of bullet tongue baffles of axially symmetric setting, two groups of bullet tongue baffle opposite ends form crack, set between every group of bullet tongue baffle
It sets spring and plays tongue piece, play tongue piece and bullet tongue baffle composition is radial mating, export pipeline and aciculiform are set in cylinder body bottom
Bolt, the threaded openings that pipe joint and outer cylinder top at the top of cylinder are equipped with, which are constituted, is tightly connected cooperation；Wherein, high pressure gas
Source, fluid infusion pond, sealant supplement cylinder, leak stopping flow container, crack module, leakage blockage simulation chamber are constituted after being connected with batch box by pipeline and valve
Positive bearing capacity test macro；High-pressure air source, fluid infusion pond, sealant supplement cylinder, reverse pressure-bearing liquid imported valve, leakage blockage simulation chamber and meter
Measuring tank is by constituting reverse pressure-bearing energy test macro after pipeline and valve connection；It slush pump, leakage blockage simulation chamber, crack module and follows
Cisterna ambiens constitutes closed loop blocking layer flushing system after connecting by pipeline with valve.
2. the experimental provision according to claim 1 that can be used for induced fractures leakage blockage simulation assessment, it is characterised in that: crack
It is connected with aciculiform bolt on the cylinder body bottom fairlead of module, is equipped with sealing element, cylinder middle part at the top of cylinder outside pipe joint
Crack be corresponding two at parallel fracture.
3. the experimental provision according to claim 1 or 2 that can be used for induced fractures leakage blockage simulation assessment, it is characterised in that:
Heating mantle and temperature regulating device are provided with outside the leak stopping flow container, leakage blockage simulation chamber and circulatory pool.
4. the experimental provision according to claim 1 or 2 that can be used for induced fractures leakage blockage simulation assessment, it is characterised in that:
Safety valve is provided on pipeline between sealant supplement cylinder and leak stopping flow container, the sealant supplement cylinder and leak stopping flow container are piston-type pressure
The liquid of tank, the fluid infusion pond and sealant supplement cylinder includes one kind of water, drilling fluid, ethylene glycol or glycerine.
5. the experimental provision according to claim 1 or 2 that can be used for induced fractures leakage blockage simulation assessment, it is characterised in that:
The cylinder body bottom fairlead lower end of crack module is connected with valve, is divided to two branches to be respectively equipped with valve after the valve, passes through
Closing for three valves, makes leakage-stop liquid and drilling fluid respectively enter hopper and circulating tank；Lead on the output pipe of leak stopping flow container
It crosses valve and is divided into two branches, a branch is connected by valve with slush pump, and two branches are connected by valve with crack module, and
Relief valve is provided on two roads.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857943A (en) * | 2018-08-24 | 2020-03-03 | 中石化石油工程技术服务有限公司 | Experimental device for can be used to induced crack leaking stoppage simulation evaluation |
| CN112360432A (en) * | 2020-11-11 | 2021-02-12 | 中国石油大学(北京) | Gap simulation mechanism, gap simulation experiment instrument and leaking stoppage evaluation experiment device |
| US20230141812A1 (en) * | 2020-11-11 | 2023-05-11 | China University Of Petroleum-Beijing | Dynamic crack leaking stoppage evaluation experiment device and experiment method |
| CN116297098A (en) * | 2023-03-17 | 2023-06-23 | 西南石油大学 | Optimization method for deep fractured hydrocarbon reservoir pre-propped fracture temporary plugging reservoir protection formula |
-
2018
- 2018-08-24 CN CN201821373326.9U patent/CN209086218U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857943A (en) * | 2018-08-24 | 2020-03-03 | 中石化石油工程技术服务有限公司 | Experimental device for can be used to induced crack leaking stoppage simulation evaluation |
| CN110857943B (en) * | 2018-08-24 | 2024-08-16 | 中石化石油工程技术服务有限公司 | Experimental device for be used to induced crack leaking stoppage simulation evaluation |
| CN112360432A (en) * | 2020-11-11 | 2021-02-12 | 中国石油大学(北京) | Gap simulation mechanism, gap simulation experiment instrument and leaking stoppage evaluation experiment device |
| US20230141812A1 (en) * | 2020-11-11 | 2023-05-11 | China University Of Petroleum-Beijing | Dynamic crack leaking stoppage evaluation experiment device and experiment method |
| CN116297098A (en) * | 2023-03-17 | 2023-06-23 | 西南石油大学 | Optimization method for deep fractured hydrocarbon reservoir pre-propped fracture temporary plugging reservoir protection formula |
| CN116297098B (en) * | 2023-03-17 | 2023-12-01 | 西南石油大学 | Optimization method for deep fractured hydrocarbon reservoir pre-propped fracture temporary plugging reservoir protection formula |
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Effective date of registration: 20230516 Address after: 100029 Beijing Chaoyang District Beichen West Road 8 Beichen World Center A Block 703 Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: Drilling fluid technology service center of Sinopec Shengli Petroleum Engineering Co.,Ltd. Address before: 100101 Beichen West Road, Chaoyang District, Beijing 8 Beichen world center, block A 703. Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute |
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