CN105545249A - Crack sample plate clamping device - Google Patents
Crack sample plate clamping device Download PDFInfo
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- CN105545249A CN105545249A CN201511021361.5A CN201511021361A CN105545249A CN 105545249 A CN105545249 A CN 105545249A CN 201511021361 A CN201511021361 A CN 201511021361A CN 105545249 A CN105545249 A CN 105545249A
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- 239000007788 liquid Substances 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000004088 simulation Methods 0.000 claims description 29
- 238000002474 experimental method Methods 0.000 claims description 24
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 230000008676 import Effects 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 20
- 238000009530 blood pressure measurement Methods 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 230000013011 mating Effects 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 6
- 241000405070 Percophidae Species 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 206010017076 Fracture Diseases 0.000 description 37
- 208000010392 Bone Fractures Diseases 0.000 description 36
- 238000005516 engineering process Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The crack template clamping device that this application embodiment provided, the device includes: the device comprises a clamping device body, a crack sample plate, an upper piston, a lower piston, an inlet diversion plug and an outlet diversion plug; the clamping device body is provided with a liquid inlet and a liquid outlet, one side of the inlet diversion plug is provided with a liquid inlet hole, the other side of the inlet diversion plug is provided with a diversion inlet, and the diversion inlet is matched with the liquid inlet; one side of the outlet diversion plug is provided with a liquid outlet, the other side of the outlet diversion plug is provided with a diversion outlet, and the diversion outlet is matched with the liquid outlet; the diversion inlet, the crack formed by the crack sample plate and the diversion outlet are positioned on the same horizontal line; the crack sample plate is matched with the cross section shapes of the upper piston and the lower piston; the clamping device comprises a clamping device body and is characterized in that a pressure measuring round hole used for measuring the on-way pressure of a crack is arranged on the clamping device body, and the opening direction of the pressure measuring round hole is perpendicular to the flow guide direction of the crack. The fracture template clamping device can form a simulated fracture which is closer to a real geological environment.
Description
Technical field
The present invention relates to natural petroleum gas field field scientific research simulating experiment technique field, particularly relate to a kind of pressure break and acid fracturing crack stitch in the crack model clamping device that uses in analogue experiment installation of stall temporarily.
Background technology
In oilfield prospecting developing technical field, along with the minimizing increasingly of high-grade petroleum resources, the difficulties such as hypotonic spy is low, unconventional employ the main force and the emphasis that petroleum resources has become oil-gas exploration and development.In the face of these difficult-to-produce reserves, conventional yield-increasing technology has been difficult to meet the demand significantly improving single well productivity very well.In recent years, pressure break and ACID FRACTURING TECHNOLOGY are risen gradually, as one of the well stimulation of oil-gas reservoir, pressure break and ACID FRACTURING TECHNOLOGY can by forming high water conservancy diversion crack in oil-gas Layer, improve the permeability in nearly pit shaft area, thus improve the oil and gas production of individual well, therefore, pressure break and ACID FRACTURING TECHNOLOGY have become the key technology in the low developing of reservoirs of hypotonic spy.In pressure break and ACID FRACTURING TECHNOLOGY, can to passing through to add the fracturing fluid of diversion agent to pressing off injection in crack.Described diversion agent has temporary plugging function, can block up temporarily the described crack that pressed off, and to improve bottom pressure, has pressed off crack and go to other orientation described in making, or opens and split new crack, to form cracky seam web frame.Described seam web frame can improve the transformation volume of oil-gas reservoir, and then significantly improves single well productivity.
At present, turnaround fracture and ACID FRACTURING TECHNOLOGY have achieved good effect, but still lack and a kind ofly simulate experimental facilities temporarily stifled in seam and method, can study, evaluate temporary stall to mechanism and effect, to instruct temporary stall to the optimal design of constructure scheme.In existing API (American Petroleum Institute) standard water conservancy diversion experimental facilities and simulation seam temporarily stall to experimental facilities the most close, but the water conservancy diversion pool size of standard water conservancy diversion experimental facilities is less, because simulation fracture and actual crack differ greatly, it is inner that diversion agent cannot inject simulation fracture by water conservancy diversion pond, therefore cannot carry out temporary stifled diversion experiments in seam.Meanwhile, the air-proof condition of standard water conservancy diversion experimental facilities is unreliable, and complicated operation, to give in simulation seam stall temporarily to real work bring very large difficulty.
Therefore, the interior stall temporarily of a kind of structure application simulation seam simple, easy and simple to handle is needed in prior art badly to the crack model clamping device in experimental facilities.
Summary of the invention
The object of the application is to provide a kind of crack model clamping device, to form the simulation fracture closer to true downhole in reservoir environment.
To achieve these goals, the invention provides a kind of crack model clamping device, described device is specifically achieved in that
A kind of crack model clamping device, described device comprises: clamping device body, crack model, upper piston, lower piston, import water conservancy diversion plug and outlet water conservancy diversion plug;
Described clamping device body is provided with inlet and liquid outlet, and the side of described import water conservancy diversion plug is provided with inlet opening, and opposite side is provided with water conservancy diversion import, the mating shapes of described water conservancy diversion import and described inlet; The side of described outlet water conservancy diversion plug is provided with fluid hole, and opposite side is provided with diversion outlet, the mating shapes of described diversion outlet and described liquid outlet;
The crack that described water conservancy diversion import, described crack model are formed, described diversion outlet are positioned on same level line;
The cross sectional shape of described crack model and described upper piston, lower piston matches, and the bottom surface of described upper piston and the end face of described crack model contact, and the end face of lower piston and the bottom surface of described crack model contact;
Described clamping device body is provided with for measuring the pressure measurement circular hole of crack along stroke pressure, the perforate direction of described pressure measurement circular hole is vertical with the water conservancy diversion direction in described crack.
Optionally, in one embodiment of the invention, described crack model is made up of two pieces of symmetrical templates, and the contact surface of two pieces of templates is provided with diversion groove, and described diversion groove is for the formation of simulation fracture.
Optionally, in one embodiment of the invention, described diversion groove is wedge shape wall or rectangle wall.
Optionally, in one embodiment of the invention, described water conservancy diversion import and described diversion outlet are duckbill.
Optionally, in one embodiment of the invention, described inlet opening comprises at least two ports and port control valve, and described port control valve is for controlling one or more port water conservancy diversion.
Optionally, in one embodiment of the invention, described upper piston and described lower piston are corner is the cuboid of arc surface.
Optionally, in one embodiment of the invention, the sidewall of described cuboid is provided with o-ring groove, in described o-ring groove, is placed with sealing ring.
Optionally, in one embodiment of the invention, the inlet on described clamping device body and liquid outlet are provided with sealing ring.
Optionally, in one embodiment of the invention, the highest withstand voltage of described sealing ring is not less than 25Mpa, and most high-temperature resistant value is not less than 150 DEG C.
Optionally, in one embodiment of the invention, the rapidoprint of described crack model comprise following any one: the formation core that drilling well obtains, with layer position outcrop rock sample, metal material, highstrenghtpiston.
Optionally, in one embodiment of the invention, described upper piston, lower piston are provided with leak-off hole, wherein, the leak-off hole of described upper piston is communicated to the bottom surface of upper piston, and the leak-off hole of described lower piston is communicated to the end face of lower piston.
Stitch the experimental facilities of interior temporary stall to simulation, described device comprises: described crack model clamping device, hydraulic press, high pressure piston container, injection pump, pressometer and the first back-pressure valve;
Described crack model clamping device is installed in described hydraulic press, and described hydraulic press is used for applying pressure to described crack model clamping device;
Inlet opening in the model clamping device of described crack is connected with described high pressure piston container;
Described injection pump is connected with described high pressure piston container, injects liquid, and control the speed injecting liquid for controlling described high pressure piston container to described inlet opening;
Described pressometer is connected with the pressure measurement circular hole in the model clamping device of described crack;
Described first back-pressure valve is connected with the fluid hole of described crack model clamping device, for regulating the back pressure of crack inner flow passage.
Optionally, in one embodiment of the invention, in described seam, stall also comprises to analogue experiment installation temporarily: the second back-pressure valve and the 3rd back-pressure valve, described second back-pressure valve is connected with the leak-off hole of described upper piston, and described 3rd back-pressure valve is connected with the leak-off hole of described lower piston.
Stitch the experimental technique of interior temporary stall to simulation, described method comprises:
In described seam, stall is to the inlet opening injection turnaround fracture liquid of the experimental facilities of simulation temporarily, and described turnaround fracture liquid is mixed with the diversion agent of preset ratio;
By pressometer from the pressure measurement circular hole fracture detection inside of described clamping device body along stroke pressure;
When detecting that the internal pressure in described crack is increased to default stifled pressure temporarily, stopping the injection of described turnaround fracture liquid, recording the volume of the turnaround fracture liquid now injected;
Inject fracturing base fluid to described inlet opening, according to detect inside, crack along stroke pressure, judge the stifled temporarily position of inside, crack and block up intensity temporarily.
Crack provided by the invention model clamping device can provide installation for stitching interior temporary stall to simulated experiment, dismantling easy crack model clamping device.The sealing of described clamping device is higher, by applying different pressure to described clamping device, can crack under Reality simulation reservoir media, and provide strong experiment basis for stitching interior temporary stall to simulated experiment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of embodiment of crack provided by the invention model clamping device;
The Reference numeral of Fig. 1: 1, upper piston; 2, the sealing ring of upper piston; 3, crack model cope match-plate pattern; 4, pressure measurement circular hole; 5, crack model lower bolster; 6, the sealing ring of lower piston; 7, lower piston; 8, clamping device body; 9, inlet sealing ring; 10, inlet; 11, import water conservancy diversion plug; 12, inlet opening; 13, diversion outlet; 14, water conservancy diversion plug is exported; 15, upper piston leak-off hole; 16, lower piston leak-off hole; 17, water conservancy diversion import;
The structural representation of Fig. 2 a to be wall provided by the invention be diversion groove of wedge shape;
The structural representation of Fig. 2 b to be wall provided by the invention be diversion groove of rectangle;
Fig. 3 is that the interior stall temporarily of seam provided by the invention is to the structural representation of a kind of embodiment of analogue experiment installation;
The Reference numeral of Fig. 3: 1, crack model clamping device; 18, pressometer; 19, injection pump; 20, the first high pressure piston container; 21, the first high pressure piston container; 22, the balance of the second back-pressure valve; 23, the balance of the 3rd back-pressure valve; 24, the balance of the first back-pressure valve; 25, the second back-pressure valve; 26, the 3rd back-pressure valve; 27, the first back-pressure valve; 28, hydraulic press;
Fig. 4 is that the interior stall temporarily of seam provided by the invention is to the method flow diagram of a kind of embodiment of analogue experiment method;
Fig. 5 is the change curve of the injection pressure injecting turnaround fracture liquid process in the embodiment of the present invention.
Detailed description of the invention
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
Fig. 1 is the structural representation of a kind of embodiment of crack provided by the invention model clamping device, by reference to the accompanying drawings 1, and described device comprises:
Clamping device body 8, crack model 3 and 5, upper piston 1, lower piston 7, import water conservancy diversion plug 11 and outlet water conservancy diversion plug 14;
Described clamping device body 8 is provided with inlet 10 and liquid outlet (not shown, described liquid outlet and described inlet symmetrical), the side of described import water conservancy diversion plug 11 is provided with inlet opening 12, opposite side is provided with water conservancy diversion import 17, the mating shapes of described water conservancy diversion import 17 and described inlet 10; The side of described outlet water conservancy diversion plug 14 is provided with fluid hole (not shown, described fluid hole can comprise circular hole), and opposite side is provided with diversion outlet 13, the mating shapes of described diversion outlet 13 and described liquid outlet;
When described crack model clamping device horizontal positioned, the crack that described water conservancy diversion import 17, described crack model 3,5 are formed, described diversion outlet 13 are positioned on same level line;
The cross sectional shape of described crack model 3,5 and described upper piston 1, lower piston 7 matches, the bottom surface of described upper piston 1 and the end face joint of described crack model 3, and the end face of lower piston 7 and the bottom surface of described crack model 5 contact;
Described clamping device body 8 is provided with for measuring the pressure measurement circular hole 4 of crack along stroke pressure, the perforate direction of described pressure measurement circular hole 4 is vertical with the water conservancy diversion direction in described crack.
In the present embodiment, described crack model can be made up of two pieces of symmetrical templates, and the contact surface of two pieces of templates is provided with diversion groove.As shown in Figure 1, described crack model can comprise template 3 and template 5 forms, and the contact surface of described template 3 and described template 5 is provided with diversion groove, and described diversion groove is for the formation of simulation fracture.In the present embodiment, the hierarchy structure of described diversion groove the demand of experimentally object can arrange corresponding value.
In another embodiment of the application, described crack model can be made up of two pieces of symmetrical templates, and the width of the diversion groove in described template and angle can dynamic adjustments, with the crack in Reality simulation geological conditions.
In the present embodiment, described diversion groove can be tapered wall face or parallel wall surface, the structural representation of Fig. 2 a to be wall provided by the invention be diversion groove of wedge shape, the structural representation of Fig. 2 b to be wall provided by the invention be diversion groove of rectangle.The fracture development condition of different regions is different, causes the fracture shape of generation also not identical, provides two kinds of diversion grooves that wall is wedge shape or rectangle, with the demand of satisfied different simulation fracture in the present embodiment.Certainly, described diversion groove is not limited to wedge shape wall and rectangle wall.
Water conservancy diversion import 17 in the present embodiment and diversion outlet 13 can be duckbill.As mentioned above, the mating shapes of water conservancy diversion import 17 and inlet 10, the mating shapes of diversion outlet 13 and liquid outlet.Under actual geological conditions, liquid in crack contacts crack wall equably, in large area, when water conservancy diversion import 17 embed inlet 10, diversion outlet 13 embed described liquid outlet time, in order to oil reservoir mining environment that is virtually reality like reality, can be duckbill by described water conservancy diversion import 17 and diversion outlet 13, make the liquid entering crack maximum area can contact crack wall.
In the present embodiment, it is the cuboid of arc surface that upper piston 1 and lower piston 7 can be set to corner.Crack model clamping device in the present invention blocks up diversion experiments temporarily for simulating in seam, in this experimentation, can pass through the pressure of simulation fracture in the model clamping device of observation described crack, judges the stifled temporarily position of described simulation fracture and temporary stifled intensity.Therefore, described crack model clamping device demand fulfillment air-proof condition, as shown in Figure 1, because corner is fallen as the air-proof condition of the cuboid of arc surface is better, can arrange upper piston 1 and lower piston 7 and be the cuboid fallen as arc surface corner.It should be noted that, upper piston 1 and lower piston 7 can use stainless steel or Hastelloy to process.
As mentioned above, the cross sectional shape of described crack model 3,5 and described upper piston 1, lower piston 7 matches, and therefore, as shown in Fig. 2 a, 2b, described crack model 3,5 also can be set to the cuboid that corner is fallen as arc surface.The rapidoprint of described crack model comprise following any one: the formation core that drilling well obtains, with layer position outcrop rock sample, metal material, highstrenghtpiston.
Further, o-ring groove can be set on the cuboid sidewall of upper piston 1 and lower piston 7, when upper piston 1, lower piston 7 embed clamping device body 8, the sealing ring 2 be positioned in upper piston 1 o-ring groove can seal the passage between upper piston 1 and clamping device body 8, and the sealing ring 6 be positioned in lower piston 7 o-ring groove can seal the passage between lower piston 7 and clamping device body 8.In addition, inlet 10 and liquid outlet are also provided with sealing ring.As shown in Figure 1, sealing ring 9 can encase inlet 10, the embodiment of the sealing ring of liquid outlet and the identical of inlet.By arranging sealing ring on described upper piston 1, lower piston 7, inlet 10 and liquid outlet, the sealing intensity in described simulation fracture can be strengthened, reservoir media that is virtually reality like reality.
Under crack model clamping device in the present invention works in high pressure or hot environment, in order to keep the normal work of described sealing ring under high-pressure high-temperature environment, the highest withstand voltage of described sealing ring is not less than 25Mpa, and most high-temperature resistant value is not less than 150 DEG C.
Described inlet opening can comprise at least two ports and port control valve, and described port control valve may be used for controlling one or more port water conservancy diversion.In simulated experiment process, can inject one or more liquid in the model clamping device of described crack, the inlet opening that the present embodiment comprises multiple port can realize one or more liquid alternated injection described crack model clamping devices.
Described upper piston 1, lower piston 7 are provided with leak-off hole, and wherein, the leak-off hole 15 of described upper piston 1 is communicated to the bottom surface of upper piston 1, and the leak-off hole 16 of described lower piston 7 is communicated to the end face of lower piston 7.The filter loss of described crack model 3 can be measured by described leak-off hole 15, the filter loss of described crack model 5 can be measured by described leak-off hole 16.
Present invention also offers a kind of stitch interior temporary stall to simulation experimental facilities, Fig. 3 is that the interior stall temporarily of seam provided by the invention is to the structural representation of a kind of embodiment of analogue experiment installation, as shown in Figure 3, described device comprises: above-mentioned crack model clamping device, hydraulic press 28, first high pressure piston container 20, second high pressure piston container 21, injection pump 19, pressometer 18 and the first back-pressure valve 27;
Described crack model clamping device is installed in described hydraulic press 28, and described hydraulic press 28 applies pressure for giving described crack model clamping device;
Inlet opening 12 in the model clamping device of described crack is connected with described first high pressure piston container 20, second high pressure piston container 21;
Described injection pump 19 is connected with described first high pressure piston container 20, second high pressure piston container 21, injects liquid for controlling described first high pressure piston container 20, second high pressure piston container 21 to described inlet opening 12, and controls the speed injecting liquid;
Described pressometer 18 is connected with the pressure measurement circular hole 4 in the model clamping device of described crack;
Described first back-pressure valve 27 is connected with the fluid hole of described crack model clamping device, for regulating the back pressure of crack inner flow passage.
Described device also comprises: the second back-pressure valve 25 and the 3rd back-pressure valve 26, and described second back-pressure valve 25 is connected with the leak-off hole 16 of described lower piston 7, and described 3rd back-pressure valve 26 is connected with the leak-off hole 15 of described upper piston 1.By the liquid volume that metering leak-off hole 16,17 is flowed out, the filter loss of crack model can be obtained.It should be noted that, the liquid that the first back-pressure valve 27 flows out can be measured by balance 24, and the liquid that the second back-pressure valve 25 flows out can be measured by balance 22, and the liquid that the 3rd back-pressure valve 26 flows out can be measured by balance 23.
Based on the experimental facilities of stall temporary in above-mentioned seam to simulation, present invention also offers a kind of stitch interior temporary stall to simulation experimental technique, Fig. 4 is that in seam provided by the invention, stall is to the method flow diagram of a kind of embodiment of analogue experiment method temporarily, and as shown in Figure 4, described method comprises:
S1: temporary stall injects turnaround fracture liquid to the inlet opening of the experimental facilities of simulation in described seam, and described turnaround fracture liquid is mixed with preset ratio diversion agent.
As shown in Figure 3, fill the turnaround fracture liquid being mixed with preset ratio diversion agent in the first high pressure piston container 20, being pressurizeed by injection pump 19 is injected into inlet opening 12 by the turnaround fracture liquid in the first high pressure piston container 20, and injection rate can regulate.
S2: by pressometer from the pressure measurement circular hole fracture detection inside of described clamping device body along stroke pressure.
By the pressure of inside, pressometer 18 measure analog crack.
S3: when detecting that the internal pressure in described crack is increased to default stifled pressure temporarily, stopping the injection of described turnaround fracture liquid, recording the volume of the turnaround fracture liquid now injected.
Along with the injection of turnaround fracture liquid, the diversion agent in turnaround fracture liquid builds up in inside, crack, until inside, crack forms complete blocking up temporarily, liquid can not be gone out through temporary stifled seepage flow.Now, the internal pressure kept in described crack raises, and when pressure is increased to default stifled pressure temporarily, can stops the injection of turnaround fracture liquid, and record the volume of the turnaround fracture liquid now injected.When known Size of Crack, the volume forming described turnaround fracture liquid when blocking up temporarily can provide very important reference value to blocking up temporarily in Practical Project Optimized fracturing design.
S4: inject fracturing base fluid to described inlet opening, according to detect inside, crack along stroke pressure, judge the stifled temporarily position of inside, crack and block up intensity temporarily.
The pressure at pressure tap place, downstream, Zhong Zandu position, crack is zero, and the pressure measurement circular hole pressure of stifled generation position upstream is non-vanishing temporarily.By the pressure recorded from the pressure measurement circular hole 4 on described clamping device body 1, can judge block up position temporarily and block up intensity temporarily.In embodiments of the present invention, described pressure measurement circular hole is at least 3, and when pressure measurement circular hole quantity is more, the stifled temporarily positional precision determined is higher.Diverting agent depth of invasion can be determined in described stifled position temporarily, and blocking up pressing crack construction temporarily to reality has important directive function.
Below by a concrete above-mentioned seam of experiment aid illustration temporarily stall to the experimental technique of simulation.Use storehouse, Tarim Basin car in front of the mountains sandstone to appear the crack template of making two pieces of wedge shape walls, shape is as shown in Figure 2 a.The liquid used in experiment is: the diversion agent of three kinds of different-grain diameters becomes turnaround fracture liquid 2000mL according to certain proportions, and load in the first high pressure piston container 20, load in another the second high pressure piston container 21 not containing the fracturing base fluid 2000mL of diversion agent.Experiment parameter is set to: it is 18MPa that hydraulic press 28 loads fracture closure pressure, infusion speed 50mL/min, and outlet back pressure is 0Mpa.Use the interior stall temporarily of seam as shown in Figure 3 to the experimental facilities of simulation, to utilize injection pump 19 to drive the first high pressure piston container 20, turnaround fracture liquid is injected inlet opening 12, the volume of test pressure change and injection turnaround fracture liquid.When the internal pressure in crack rises to default stifled pressure temporarily, change into the fracturing base fluid injecting the second high pressure piston container 21 in inlet opening 12, the pressure change of test inside, crack and the volume of injection fracturing base fluid.
Fig. 5 is the change curve of the injection pressure injecting turnaround fracture liquid process in the embodiment of the present invention.As shown in Figure 5, when injecting turnaround fracture liquid 1310ml, recording injection pressure and being increased to default stifled pressure 15MPa temporarily, stopping injecting; Change and inject fracturing base fluid, when injection pressure is increased to 15MPa, pressure remained steady, illustrates to be formed and blocks up temporarily, stop experiment.
Crack provided by the invention model clamping device can provide installation for stitching interior temporary stall to simulated experiment, dismantling easy crack model clamping device.The sealing of described clamping device is higher, by applying different pressure to described clamping device, can crack under Reality simulation reservoir media, and provide strong experiment basis for stitching interior temporary stall to simulated experiment.In addition, in seam provided by the invention, temporary stall is to the experimental facilities of simulating and method, can in seam that is virtually reality like reality temporarily stall to engineering, obtain different types of fractures and stifled required diversion agent and of the fracturing fluid metrical information temporarily occur, can also judging that crack position stifled temporarily occurs and blocks up intensity temporarily, providing guidance for blocking up the new crack of generation in employing seam in Practical Project temporarily.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (14)
1. a crack model clamping device, is characterized in that, described device comprises: clamping device body, crack model, upper piston, lower piston, import water conservancy diversion plug and outlet water conservancy diversion plug;
Described clamping device body is provided with inlet and liquid outlet, and the side of described import water conservancy diversion plug is provided with inlet opening, and opposite side is provided with water conservancy diversion import, the mating shapes of described water conservancy diversion import and described inlet; The side of described outlet water conservancy diversion plug is provided with fluid hole, and opposite side is provided with diversion outlet, the mating shapes of described diversion outlet and described liquid outlet;
The crack that described water conservancy diversion import, described crack model are formed, described diversion outlet are positioned on same level line;
The cross sectional shape of described crack model and described upper piston, lower piston matches, and the bottom surface of described upper piston and the end face of described crack model contact, and the end face of lower piston and the bottom surface of described crack model contact;
Described clamping device body is provided with for measuring the pressure measurement circular hole of crack along stroke pressure, the perforate direction of described pressure measurement circular hole is vertical with the water conservancy diversion direction in described crack.
2. a kind of crack according to claim 1 model clamping device, is characterized in that, described crack model is made up of two pieces of symmetrical templates, and the contact surface of two pieces of templates is provided with diversion groove, and described diversion groove is for the formation of simulation fracture.
3. a kind of crack according to claim 2 model clamping device, is characterized in that, described diversion groove is wedge shape wall or rectangle wall.
4. a kind of crack according to claim 1 model clamping device, it is characterized in that, described water conservancy diversion import and described diversion outlet are duckbill.
5. a kind of crack according to claim 1 model clamping device, it is characterized in that, described inlet opening comprises at least two ports and port control valve, and described port control valve is for controlling one or more port water conservancy diversion.
6. a kind of crack according to claim 1 model clamping device, is characterized in that, described upper piston and described lower piston are corner is the cuboid of arc surface.
7. a kind of crack according to claim 6 model clamping device, is characterized in that, the sidewall of described cuboid is provided with o-ring groove, be placed with sealing ring in described o-ring groove.
8. a kind of crack according to claim 1 model clamping device, is characterized in that, the inlet on described clamping device body and liquid outlet are provided with sealing ring.
9. a kind of crack model clamping device according to claim 7 or 8, it is characterized in that, the highest withstand voltage of described sealing ring is not less than 25Mpa, and most high-temperature resistant value is not less than 150 DEG C.
10. a kind of crack according to claim 1 and 2 model clamping device, is characterized in that, the rapidoprint of described crack model comprise following any one: the formation core that drilling well obtains, with layer position outcrop rock sample, metal material, highstrenghtpiston.
11. a kind of crack according to claim 1 model clamping devices, it is characterized in that, described upper piston, lower piston are provided with leak-off hole, wherein, the leak-off hole of described upper piston is communicated to the bottom surface of upper piston, and the leak-off hole of described lower piston is communicated to the end face of lower piston.
In 12. 1 kinds of seams, temporary stall is to the experimental facilities of simulation, it is characterized in that, described device comprises: crack model clamping device, hydraulic press, high pressure piston container, injection pump, pressometer and the first back-pressure valve in claim 1 to 9 described in any one;
Described crack model clamping device is installed in described hydraulic press, and described hydraulic press is used for applying pressure to described crack model clamping device;
Inlet opening in the model clamping device of described crack is connected with described high pressure piston container;
Described injection pump is connected with described high pressure piston container, injects liquid, and control the speed injecting liquid for controlling described high pressure piston container to described inlet opening;
Described pressometer is connected with the pressure measurement circular hole in the model clamping device of described crack;
Described first back-pressure valve is connected with the fluid hole of described crack model clamping device, for regulating the back pressure of crack inner flow passage.
13. according to claim 12 a kind of stitch interior temporary stall to simulation experimental facilities, it is characterized in that, described device also comprises: the second back-pressure valve and the 3rd back-pressure valve, described second back-pressure valve is connected with the leak-off hole of described upper piston, and described 3rd back-pressure valve is connected with the leak-off hole of described lower piston.
In 14. 1 kinds of seams, stall is to the experimental technique of simulation temporarily, and it is characterized in that, described method comprises:
In seam according to claim 12, temporary stall injects turnaround fracture liquid to the inlet opening of the experimental facilities of simulation, and described turnaround fracture liquid is mixed with the diversion agent of preset ratio;
By pressometer from the pressure measurement circular hole fracture detection inside of described clamping device body along stroke pressure;
When detecting that the internal pressure in described crack is increased to default stifled pressure temporarily, stopping the injection of described turnaround fracture liquid, recording the volume of the turnaround fracture liquid now injected;
Inject fracturing base fluid to described inlet opening, according to detect inside, crack along stroke pressure, judge the stifled temporarily position of inside, crack and block up intensity temporarily.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4446626B2 (en) * | 2001-05-22 | 2010-04-07 | 財団法人電力中央研究所 | Rock crack measuring method and apparatus |
| CN202256290U (en) * | 2011-07-08 | 2012-05-30 | 中国石油天然气股份有限公司 | Parallel rock plate holder for acid rock reaction |
| CN102606125A (en) * | 2012-03-09 | 2012-07-25 | 西安石油大学 | Simulator for researching hydraulic fracturing effect |
| CN103048184A (en) * | 2011-10-13 | 2013-04-17 | 陈兴佳 | Testing method of breakthrough pressure of repeated fracturing plugging agent |
| CN104535715A (en) * | 2014-12-02 | 2015-04-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Crack particles diversion agent temporary blockage capability evaluation apparatus and method thereof |
| CN204359507U (en) * | 2014-12-02 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of fibers mixture propping agent flow in fracture analogue experiment installation |
-
2015
- 2015-12-31 CN CN201511021361.5A patent/CN105545249A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4446626B2 (en) * | 2001-05-22 | 2010-04-07 | 財団法人電力中央研究所 | Rock crack measuring method and apparatus |
| CN202256290U (en) * | 2011-07-08 | 2012-05-30 | 中国石油天然气股份有限公司 | Parallel rock plate holder for acid rock reaction |
| CN103048184A (en) * | 2011-10-13 | 2013-04-17 | 陈兴佳 | Testing method of breakthrough pressure of repeated fracturing plugging agent |
| CN102606125A (en) * | 2012-03-09 | 2012-07-25 | 西安石油大学 | Simulator for researching hydraulic fracturing effect |
| CN104535715A (en) * | 2014-12-02 | 2015-04-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Crack particles diversion agent temporary blockage capability evaluation apparatus and method thereof |
| CN204359507U (en) * | 2014-12-02 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of fibers mixture propping agent flow in fracture analogue experiment installation |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664028A (en) * | 2016-07-29 | 2018-02-06 | 中国石油天然气股份有限公司 | Temporary plugging fracturing method and crack flow guide device |
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Application publication date: 20160504 |