CN101408104A - High fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system - Google Patents
High fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system Download PDFInfo
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- CN101408104A CN101408104A CNA2008101979733A CN200810197973A CN101408104A CN 101408104 A CN101408104 A CN 101408104A CN A2008101979733 A CNA2008101979733 A CN A2008101979733A CN 200810197973 A CN200810197973 A CN 200810197973A CN 101408104 A CN101408104 A CN 101408104A
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- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 238000011156 evaluation Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000004088 simulation Methods 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 28
- 238000005755 formation reaction Methods 0.000 abstract description 28
- 239000000463 material Substances 0.000 abstract description 13
- 230000003993 interaction Effects 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000306 recurrent Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses an evaluation experimental system of plugging of high-fidelity simulated formation drilling. The system at least comprises a pressure device, a plugging liquid container, a pressure meter and a hydraulic pump; wherein, a pressure system is connected with a high-fidelity loss zone simulator through the plugging liquid container. The invention can highly meet the requirements of differential pressure at the bottom of the drilling, the property and size of the added plugging materials and the interaction of the added plugging materials and the formation according to the physical, chemical and mechanical property of lost rock and the main similarity conditions of geometric, chemical, dynamic, motion and material similarity and the like of simulated formation fracture. The device can be used repeatedly, has low cost and convenient operation and has wide application value and market prospect.
Description
Technical field
The present invention relates to a kind of high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system, belong to the probing field.
Background technology
The challenge that leakage is ubiquity in the oil-gas drilling process, often run into.Because the down-hole complex accident that leakage causes, it is very harmful that drilling well, completion are constructed, and is the problem that domestic and international petroleum works circle are paid close attention to always.In the drillng operation,, not only incur loss through delay drilling time in case miss, the loss drilling fluid, infringement oil-gas Layer etc., but also may cause that borehole well instability causes a series of complex situations and accidents such as well slough, bit freezing, blowout, even cause well to be scrapped, cause heavy economic losses.
Formation leakage situation and rock physics, chemistry and mechanical property, the character of the loss circulation material that adds in bottom hole pressure difference, the mud, size, the interaction that adds material and stratum has confidential relation.At present, the domestic and international static leak stopping evaluation experimental facilities that has, its basic structure all is to adopt end pressurization basically, and the middle part is a vertical cylinder, and the bottom is used for discharge opeing for the pipeline of band valve.Use slot plate and ballotini or little steel ball etc. to fill simulation leakage stratum in the cylinder earlier, add the leak stopping slurries on drop ply top, drive units such as use air pressure are pressed into simulated formation with slurries, estimate the performance of loss circulation material.Because simulated formation and the serious distortion of actual formation character, difference is too big as a result to cause experimental result and The field.Because ubiquity leakage in a lot of exploration of oil and gas field of China and the exploitation, develop a cover high fidelity simulating stratum leak stopping evaluation experimental facilities, the plugging effect of estimating loss circulation material under experiment lab simulation bottom hole temperature (BHT), pressure, formation properties, stratum opening pressure and liquid recurrent state is very necessary with exploitation to exploration of oil and gas field.
Summary of the invention
Purpose of the present invention just is to overcome above-mentioned the deficiencies in the prior art, a kind of high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system is provided, this leakage of invention simulated formation rock physics, chemistry and mechanical property, the loss circulation material of the character of the loss circulation material that adds in bottom hole pressure difference, the mud, size and adding and the interaction on stratum.This system mainly presses compression system promptly to add parts such as temperature control system by compression system, leakage-stop liquid container, high-fidelity drop ply simulator, ring to form
Realize that the technical scheme that goal of the invention adopts is: a kind of high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system, at least comprise water booster system, leakage-stop liquid container, pressure meter and hydraulic pump, compression system is connected with high-fidelity drop ply simulator by the leakage-stop liquid container.
Wherein high-fidelity drop ply simulator comprises simulation drop ply, high temperature high voltage resistant packing element, clamper, plug and heater, the simulation drop ply is filled in to be split in the core barrel, split core barrel and be with the high temperature high voltage resistant packing element outward, the high temperature high voltage resistant packing element is equipped with clamper outward, clamper overcoat having heaters, the core barrel of splitting that is filled with the simulation drop ply is equipped with plug in two ends up and down.
Described cross section of splitting core barrel is an annulus, splits core barrel and is made up of two semicircular core barrels, realizes seamless link at connecting portion by pegging graft mutually.This connected mode helps installing and opening, and after pressure acquires a certain degree, splits core barrel to circumferentially opening certain distance, and open in simulated formation hole, crack under the pressure of leakage-stop liquid.After leakage-stop liquid enters the stratum and keeps certain pressure, around splitting core barrel, apply hydraulic pressure, simulated formation pressure makes that leakage-stop liquid is counter to be arranged.Experiment is opened and split core barrel after finishing, and measures the degree of depth and intensity that leakage-stop liquid enters the stratum, can use repeatedly, and is easy and simple to handle, good economy performance.
Described clamper is " [] " shape, clamper passes through the fastening high temperature high voltage resistant packing element in two ends up and down, clamper plays the effect that seals leak stopping up and down and high temperature high voltage resistant packing element, forms annular space between clamper middle part and the high temperature high voltage resistant packing element, and the annular space place is connected to hydraulic pump.
The centre of described plug has a through hole, and the through hole of upper plug head is connected with plunger displacement pump by pressure piping, and leakage-stop liquid enters the simulation drop ply from the through hole of upper plug head; The through hole of lower end cap directly is connected with container, and the leakage-stop liquid that oozes out from the stratum is received the container by the through hole of lower end cap.During according to the experiment needs, can also pass through the lower through-hole time pressure, leakage-stop liquid is clamp-oned the ability of resisting oil-air pressure behind the stratum under the simulated formation oil-air pressure.
The high temperature high voltage resistant packing element that the present invention uses for anti-more than 150 ℃ temperature, bear the packing element of the above pressure of 60Mpa, be enclosed within plug-in type during work and split the core barrel outside, and be connected with plug at two ends, play the sealing simulated formation effect, when experiment needs, can in annular space, exert pressure, and pressure is delivered to simulated formation by splitting core barrel, detects anti-row's situation of the loss circulation material of under strata pressure, clamp-oning the stratum.
Be provided with pressure meter between above-mentioned compression system and the leakage-stop liquid container, be provided with pressure meter between leakage-stop liquid container and the high-fidelity drop ply simulator, be provided with pressure meter between annular space place and the hydraulic pump.
Described heating system is the double plunger high-pressure metering pump, this pump maximum pump discharge 13L/h, and maximum pressure 50Mpa, plunger displacement pump is pressed into simulated formation with leakage-stop liquid.Used working media is a clear water, preferred distilled water.
The leakage-stop liquid container is used to store leakage-stop liquid, operating pressure 40MPa, and volume 2000mL, container are piston cylinder operator, leakage-stop liquid and fluid under pressure can be isolated.
When using this experimental system, at first the simulated formation material is packed into and splits core barrel, will split pack into the rubber tube of high temperature resistance high pressure of core barrel then, utilization adds holds device rubber tube is stepped up, install upper and lower plug, in the through hole of upper plug head, connect pressure piping.Utilize plunger displacement pump that leakage-stop liquid is pressed into simulated formation and behind certain pressure, keep the pressure certain hour, if experiment needs, utilize the annular space of hydraulic pump between clamper middle part and high temperature high voltage resistant packing element to apply hydraulic pressure, hydraulic pressure is delivered to the core barrel that makes of splitting core barrel on every side by rubber tube and playbacks, make anti-row of leakage-stop liquid of pressure simulation strata pressure, test the size of its anti-discharge capacity.After treating that experiment finishes, open and split the degree of depth that core barrel measurement leakage-stop liquid is clamp-oned simulated formation.In experiment,, when experiment needs, simulated formation added and keep certain temperature by heater simulated formation temperature.
Device provided by the invention is the HTHP analogue experiment installation on high fidelity simulation leakage stratum, this device is aspect drop ply, can not only satisfy at present domestic all leakage modules (man-made fracture piece, circular hole model, ladder etc.) and carry out the leak stopping experiment, and can simulate true drop ply feature and experimentize at routine.Aspect pressure, can simulate burden pressure, the simulation of drop ply pressure break, the anti-row function of strata pressure.On temperature, can be that the subsurface temperature size is carried out the leak stopping experiment by the heating apparatus simulates real.
This development of Experimental System is the evaluation of excellent plugging drilling fluid performance and the determining of leak-stopping technique of sealing agent, and a kind of science, effective experimental evaluation method are provided, and the foundation of science is provided for relevant research and production
Description of drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a high-fidelity drop ply simulator sectional view among Fig. 1.
Fig. 3 is a sectional view of splitting core barrel.
Among the figure, 1. plunger displacement pump, 2. pressure meter, 3. leakage-stop liquid container, 4. pressure meter, 5. high-fidelity drop ply simulator, 6. liquid outlet, 7. pressure meter, 8. hydraulic pump, 9. the simulation drop ply is 10. split core barrel, 11. high temperature high voltage resistant tubes, 12. heater, 13. upper plug heads, 14. clampers, 15. annular space, 16. lower end caps.
The specific embodiment
Structure of the present invention as shown in Figure 1, high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system comprises water booster system plunger displacement pump 1, leakage-stop liquid container 3, pressure meter and hydraulic pump 8, plunger displacement pump 1 is connected with high-fidelity drop ply simulator 5 by leakage-stop liquid container 3.Be provided with pressure meter 2 between plunger displacement pump 1 and the leakage-stop liquid container 3, be provided with pressure meter 4 between leakage-stop liquid container 3 and the high-fidelity drop ply simulator 5, be provided with pressure meter 7 between annular space 15 places and the hydraulic pump 9.Plunger displacement pump 1 this pump maximum pump discharge 13L/h, maximum pressure 50Mpa, plunger displacement pump is pressed into simulated formation with leakage-stop liquid.Used working media is a clear water, preferred distilled water.Leakage-stop liquid container 3 is used to store leakage-stop liquid, operating pressure 40MPa, and volume 2000mL, container are piston cylinder operator, leakage-stop liquid and fluid under pressure can be isolated.
The sectional view of high-fidelity drop ply simulator 5 as shown in Figure 2, high-fidelity drilling stratum leakage analogue means, comprise simulation drop ply 9, high temperature high voltage resistant packing element 11, clamper 14, plug and heater 12, simulation drop ply 9 is filled in to be split in the core barrel 10, split the core barrel 10 outer high temperature high voltage resistant packing elements 11 that are with, the high temperature high voltage resistant packing element 11 outer clampers 14 that are equipped with, clamper 14 overcoat having heaters 12, the core barrel 10 of splitting that is filled with simulation drop ply 9 is provided with upper plug head 13, and the lower end is provided with lower end cap 16.Clamper 14 is " [] " shape, and clamper 14 passes through the fastening high temperature high voltage resistant packing element 11 in two ends up and down, forms annular space 15 between clamper 14 middle parts and the high temperature high voltage resistant packing element, and clamper 14 plays the effect that seals leak stopping up and down and high temperature high voltage resistant packing element 11.
Splitting core barrel 10 cross sections is annulus, splits core barrel and is made up of two semicircular core barrels, realizes seamless link at connecting portion by pegging graft mutually, and its sectional view as shown in Figure 3.
The high temperature high voltage resistant packing element that the present invention uses for anti-more than 150 ℃ temperature, bear the packing element of the above pressure of 60Mpa, be enclosed within plug-in type during work and split the core barrel outside, and be connected with plug at two ends, play the sealing simulated formation effect, when experiment needs, can in annular space, exert pressure, and pressure is delivered to simulated formation by splitting core barrel, detects anti-row's situation of the loss circulation material of under strata pressure, clamp-oning the stratum.
When using this device, at first the simulated formation material is packed into and splits core barrel, will split pack into the rubber tube of high temperature resistance high pressure of core barrel then, utilize to add and hold device rubber tube is stepped up, install upper and lower plug, in the through hole of upper plug head, connect pressure piping.Utilize plunger displacement pump that leakage-stop liquid is pressed into simulated formation and behind certain pressure, keep the pressure certain hour, if experiment needs, utilize the annular space of hydraulic pump between clamper middle part and high temperature high voltage resistant packing element to apply hydraulic pressure, hydraulic pressure by rubber tube be delivered to split core barrel around core barrel is classified as, make anti-row of leakage-stop liquid of pressure simulation strata pressure, test the size of its anti-discharge capacity.After treating that experiment finishes, open and split the degree of depth that core barrel measurement leakage-stop liquid is clamp-oned simulated formation.In experiment,, when experiment needs, simulated formation added and keep certain temperature by heater simulated formation temperature.
Simulation drop ply modular system is installed in one and can rotates on 360 ° the support, so that operation.
Claims (8)
1. high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system, at least comprise water booster system, the leakage-stop liquid container, pressure meter and hydraulic pump, it is characterized in that: water booster system is connected with high-fidelity drop ply simulator by the leakage-stop liquid container, wherein high-fidelity drop ply simulator comprises the simulation drop ply, the high temperature high voltage resistant packing element, clamper, plug and heater, the simulation drop ply is filled in to be split in the core barrel, split core barrel and be with the high temperature high voltage resistant packing element outward, the high temperature high voltage resistant packing element is equipped with clamper outward, clamper overcoat having heaters, the core barrel of splitting that is filled with the simulation drop ply is equipped with plug in two ends up and down.
2. high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system according to claim 1, it is characterized in that: the cross section of splitting core barrel is an annulus, split core barrel and form, realize seamless link by pegging graft mutually at connecting portion by two semicircular core barrels.
3. high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system according to claim 1, it is characterized in that: clamper is " [] " shape, clamper passes through the fastening high temperature high voltage resistant packing element in two ends up and down, form annular space between clamper middle part and the high temperature high voltage resistant packing element, the annular space place is connected to hydraulic pump.
4. according to claim 1 or 3 described high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental systems, it is characterized in that: be provided with pressure meter between water booster system and the leakage-stop liquid container, be provided with pressure meter between leakage-stop liquid container and the high-fidelity drop ply simulator, be provided with pressure meter between annular space place and the hydraulic pump.
5. high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system according to claim 1, it is characterized in that: the centre of plug has a through hole, the through hole of upper plug head is connected with plunger displacement pump by pressure piping, and leakage-stop liquid enters the simulation drop ply from the through hole of upper plug head; The through hole of lower end cap directly is connected with container, and the leakage-stop liquid that oozes out from the stratum is received the container by the through hole of lower end cap.
6. high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system according to claim 1 is characterized in that: heating system is the double plunger high-pressure metering pump, and this pump maximum pump discharge is 13L/h, and maximum pressure is 50Mpa, and used working media is a clear water.
7. high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system according to claim 6 is characterized in that: the used working media of double plunger high-pressure metering pump is a distilled water.
8. high fidelity simulating stratum well-drilling leakage-plugging evaluation experimental system according to claim 1 is characterized in that: the leakage-stop liquid container is a piston cylinder operator, in order to leakage-stop liquid and fluid under pressure are isolated.
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| CN112326888B (en) * | 2020-11-04 | 2021-11-02 | 中国石油大学(北京) | Experimental device and experimental method for fracture plugging simulation |
| CN113250671A (en) * | 2021-06-11 | 2021-08-13 | 中国石油大学(华东) | Device and method for simulating segmental sequential fracturing or simultaneous fracturing of hot dry rock horizontal well |
| CN114166999A (en) * | 2021-12-01 | 2022-03-11 | 中国石油大学(北京) | Oil reservoir type gas storage simulation experiment device and method |
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