CN205117336U - Physical simulation experimental apparatus is hidden to unconformity barrier oil gas - Google Patents
Physical simulation experimental apparatus is hidden to unconformity barrier oil gas Download PDFInfo
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- CN205117336U CN205117336U CN201520850159.2U CN201520850159U CN205117336U CN 205117336 U CN205117336 U CN 205117336U CN 201520850159 U CN201520850159 U CN 201520850159U CN 205117336 U CN205117336 U CN 205117336U
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Abstract
The utility model relates to a physical simulation experimental apparatus is hidden to unconformity barrier oil gas, including the oil -gas stratigraphic deposits simulator, this oil -gas stratigraphic deposits simulator includes the stratum box and the unconformity cabin body that lies in stratum box top, and the stratum box is connected with the fracture belt box with the side of the unconformity cabin body, and fluid filling pipe system and fluid transport system are connected respectively to oil filler point and oil outlet on the fracture belt box, all be equipped with the hole on the one side of fracture belt box and stratum box and unconformity cabin body coupling and the bottom plate of the unconformity cabin body, the stratum box includes the independent simulation room of multilayer, and the length of upper strata simulation room is less than the length of lower floor simulation room, and every layer of simulation room all is connected with unconformity cabin physical contact, and every layer of both sides face of simulating the room all is equipped with the hole. The utility model discloses the process is gathered to the oil gas fortune of simulation under the unconformity face shelters from, and oil gas tibetan formation mechanism and controlling factor are sheltered from to the analysis stratigraphic unconformity, and the in -depth is provided the basis for petroliferous basin's oil -gas exploration to the stratum oil gas one -tenth tibetan origin cause of formation and oil gas distribution law's understanding, also can serve for testing the teaching well.
Description
Technical field
The utility model relates to the experimental facilities of oil-gas migration and gathering, specifically, relate to a kind of physical simulating device of unconformity barrier hydrocarbon reservoiring mechanism, by changing unconformity inclination angle and lithology to the seal-off effect degree of oil gas, thus spike stratigraphic unconformity is in the face of the control action of Gas Accumulation.
Background technology
Domestic and international Oil-gas Exploration Practice for many years shows, hydrocarbon stratum is ensconced in exploration very important status.See with regard to world wide, except the Persian Gulf and the former Soviet Union, the petroleum reserves of 43% and the gas reserves of 30% are stored in stratigraphic trap.External Pu Ludehuo gulf, eastern Texas, Ha Xi-Mai Sawude, Kua Lunkuaer, the oil-gas reservoirs such as pacify the border region in domestic North China Renqiu, Erdos, Tarim Basin Tahe, Liaohe Depression Paleozoic group all belong to oil-gas stratigraphic deposits from broadly defining, and oil and gas reserves is huge.
The formation of oil-gas stratigraphic deposits and unconformable block act on closely related.For the Junggar Basin, the oil-gas migration of unconformity to the Junggar Basin plays an important role (Wu Kongyou etc., 2002,2003; Mu Zhonghai etc., 2005; Cao Jian etc., 2006), In Northwestern Margin, Luliang uplift three springs convex, northern three platform convexs such as to play at oil gas all relevant to unconformity (Qujiang River show etc., 2003 that tectonic position is assembled; Chen Zhonghong etc., 2006; Oldly build equality, 2000).After the oil gas that the Permian System many covers hydrocarbon source rock generates enters plane of unconformity, constantly to the migration of depression (agate lake depression) edge and gathering, define the Hydrocarbons Accumulation In The Northwest Edge band of " multi-source multilayer ".
Plane of unconformity be due to bottom lifting, degrade and formed with weathering.Degrading and weathering of unconformity, substantially increases the permeability of fracture, improves channel condition, increases the migration efficiency of fluid.But the flowing of fluid, along with the precipitation of mineral, cementing, diagenesis, unconformity face can be made, ooze degradation again, until block pores, form the weathered clay layer that shut-off capacity is strong.Fulljames etc. (1997) and Crawford (1998) experimental study also show, permeability reduction by 3 orders of magnitude compared with non-Deformed Rocks of kata-rocks in the high hole sandstone under having fluid to participate in.Being rich in the underground fluid of mineral matter along in its process of migrating, due to the change of physical environment and the material generation physical-chemical reaction on underground water and plane of unconformity stratum, mineral matter supersaturation is caused to precipitate.The mineral precipitation in these later stages, cementing loose deposit, blocks the hole in plane of unconformity, rock porosity is reduced, permeability reduction.
The physical analogy of existing Gas Accumulation mechanism is all carry out in a large sandbox substantially, by setting up different geological model in sandbox, simulating or verify the hydrocarbon migration and accumulation rule in certain area, not yet finding that there is the experimental facilities and the experimental technique that carry out simulated formation hydrocarbon reservoiring mechanism for the lithology and compacting, degree of consolidation by changing plane of unconformity stratum.
Utility model content
The purpose of this utility model is the above-mentioned defect and the deficiency that overcome prior art existence, based on the impact that plane of unconformity is poly-on oil gas lateral migration path fortune, provide a kind of unconformity barrier oil-gas reservoir physical simulation experiment device, to realize simulating the Gas Accumulation process under plane of unconformity blocks, analyze stratum unconformity barrier hydrocarbon reservoiring mechanism and governing factor, the understanding of the in-depth formation Hydrocarbon Formation Reservoirs origin cause of formation and oil-gas distribution, for the oil-gas exploration of oil-gas bearing basin provides foundation, can be also experimental teaching service well simultaneously.
According to the utility model one embodiment, provide a kind of unconformity barrier oil-gas reservoir physical simulation experiment device, comprise oil-gas stratigraphic deposits simulator, described hydrocarbon stratum simulator comprises ground layer box body and is positioned at the unconformity cabin body above ground layer box body, the side of ground layer box body and unconformity cabin body is connected with fault zone casing, and the oil filler point on fault zone casing and oil outlet are connected infusion fluid systems and fluid output system respectively; The base plate of the side that described fault zone casing is connected with ground layer box body and unconformity cabin body and unconformity cabin body is equipped with hole; Described ground layer box body comprises multilayer independently simulating chamber, and the length of upper strata simulating chamber is less than the length of lower floor's simulating chamber, and every layer of simulating chamber all contacts with unconformity cabin body and connect, and the two sides of every layer of simulating chamber are equipped with hole.The side be connected with ground layer box body and unconformity cabin body in the both sides of simulating chamber and fault zone casing is equipped with hole, and fluid can infiltrate in simulating chamber from fault zone casing.
In the experimental facilities according to the utility model above-described embodiment, described ground layer box body comprises three layers of independently drawer type simulating chamber, and adjacent analog is provided with slideway between room, and when needs sand loading, simulating chamber freely can pull out along slideway.Stratum cabinet design is three layers of simulating chamber, can the quartz sand of filling 300-1000 micron grain size, represents the scope of medium sand-conglomerate, can meet the needs of lithology combination otherness collocation significantly.
In the experimental facilities according to the utility model above-described embodiment, the roof and floor of every layer of simulating chamber is nonporous glass plate, can ensure that the Gas Accumulation of every layer of simulating chamber is independently, unaffected each other; The biside plate of every layer of simulating chamber is the glass plate with micropore, the aperture of the micropore on biside plate is 200-300 micron, this aperture is effective to the quartz sand leakproof of particle diameter more than 200 microns, but the seepage flow of oil, gas, water can not be stoped, therefore oil, gas, water can be circulated to both sides by every layer of simulating chamber, fluid can flow to simulating chamber from the fault zone casing of side, is flowing to unconformity cabin body, now can detect unconformity cabin body to the plugging action of Gas Accumulation.
In the experimental facilities according to the utility model above-described embodiment, the top contacted with unconformity cabin body at every layer of simulating chamber is equipped with fluid acquisition hole.In experimentation, fluid acquisition hole can be opened, gather fluid and carry out detection analysis, by comparing the Geochemical Parameters feature of fluid, carrying out the difference of comparative analysis Different Strata unit Hydrocarbon Accumulation Mechanism.For example, the Molecular biomarkers collecting oil sample is analyzed, the geologic chromatographic effect in oil migration process can be studied, thus the understanding of in-depth stratigraphic oil pool Forming Mechanism.
In the experimental facilities according to the utility model above-described embodiment, the side that every layer of simulating chamber is connected with fault zone casing is equipped with concave draw-in groove and inner concave shape handle, and described draw-in groove is connected with the clamp being arranged on fault zone body side.Draw-in groove, handle and clamp design, can so that simulating chamber and fault zone casing be installed on dismounting.
In the experimental facilities according to the utility model above-described embodiment, on fault zone body side, the aperture in hole is 200-300 micron.Fault zone casing can the quartz sand of filling 300-1000 micron grain size, represents medium sand-gravel, filling coarse sand particle diameter, permeability can be made to improve, thus improve the migration efficiency of oil gas, shorten the time difference that oil gas enters simulating chamber.
In the experimental facilities according to the utility model above-described embodiment, described oil filler point is positioned at the bottom of fault zone casing, and oil outlet is positioned at the top of fault zone casing, and oil filler point and oil outlet are diagonal angle arranges.This design of oil filler point and oil outlet ensure that oil gas, at analogue means, migration fully occurs, thus can realize the observation to oil-gas migration phenomenon.
In the experimental facilities according to the utility model above-described embodiment, the hatchcover that described unconformity cabin body comprises cabin body and is connected with cabin body, can the quartz sand of filling different-grain diameter in the body of cabin, to simulate unconformity weathered clay layer.The base plate of described unconformity cabin body is the glass plate with micropore, and the aperture design of micropore is 75-100 micron, and fluid can freely infiltrate, and all the other side plates are nonporous glass plate, and fluid can not infiltrate.The top of hatchcover and described fault zone casing is provided with switching knob.Hatchcover is controlled by the switching knob being arranged on its top, and when opening switching knob, hatchcover freely can be opened around hatchcover axis of rotation, to facilitate the needs of the processs of the test such as back-up sand.Control to open fault zone casing, to meet the needs of sand loading by the switching knob at fault zone casing top.
In the experimental facilities according to the utility model above-described embodiment, described experimental facilities also comprises base and support, support is fixedly installed in one end of base, fault zone casing is fixedly installed in the other end of base, bottom simulating chamber is positioned on base and support, connection bracket and fault zone casing.
In the experimental facilities according to the utility model above-described embodiment, described support comprises the scalability support bar be installed on base and the soft rubber protection pad being positioned at support bar top, and soft rubber protection pad is connected with the simulating chamber of the bottom.Regulated the height of scalability support bar by the control handle be arranged on scalability support bar, make the variable pitch of oil-gas stratigraphic deposits simulator, in order to the impact of simulated formation occurrence on oil and gas accumulating efficiency.
Visual for what ensure in experimentation, in the experimental facilities according to the utility model above-described embodiment, described unconformity cabin body, fault zone casing and every layer of simulating chamber form by the glass of all-transparent, can bear the operating pressure up to 10MPa.
In the experimental facilities according to the utility model above-described embodiment, described infusion fluid systems comprises the oil hose that one end is connected with oil filler point and the pressure maintaining valve, pressure meter and the flow instrument that are arranged on successively on oil hose, the other end of oil hose is connected with oil transportation bucket, and oil transportation bucket is connected with compression pump.The control of multiple pressure valve can realize the control to pressure, and pressure meter and flow instrument play monitoring effect to the intensity injecting fluid.During simulated experiment, by the size of inlet pressure, inlet pressure can be investigated to the control action of Gas Accumulation.
In the experimental facilities according to the utility model above-described embodiment, described fluid output system comprises the oil hose and the pressure-regulating valve be arranged on successively on oil hose and flow instrument that one end is connected with oil outlet, and the other end of oil hose is connected with fluid collection bottle.Pressure-regulating valve adjusts mouth pressure, and the output intensity of flow instrument convection cell plays detection effect.When carrying out simulated experiment, when there being excessive fluid to need outwards release in the oil reservoir simulator of stratum, can oil outlet being opened, by fluid output system, excess fluid be discharged simulator, to keep the stability of testing.
The beneficial effects of the utility model are: (1) the utility model experimental facilities, in conjunction with fault zone casing and ground layer box body, can make crude oil enter into the simulating chamber of Different Strata casing, realize the filled process variances research of Different Strata oil-gas reservoir; Be designed with unconformity cabin body, in order to simulate plane of unconformity stratum, and the physical property of charges is variable in the body of unconformity cabin, in order to simulate plane of unconformity formation lithology physical property to the control action of Gas Accumulation, and research unconformity barrier reservoir characteristics closes the problem of lower limit; Easy to operate, lightly nimble, can multi-angle, multifactorly represent oil-gas stratigraphic deposits formation mechenism, for the oil-gas exploration of oil-gas bearing basin provides foundation, can be good at as undergraduate and graduate etc. provides experimental teaching service.(2) the utility model experimental facilities stratum cabinet design is the earth formation physical model of multilayer simulating chamber, by changing institute's sand loading gravel granularity in different simulating chamber, in order to simulation under plane of unconformity blocks lower DIFFERENT DEPOSITIONAL ENVIRONMENTS deposit physical difference on the impact of crude oil collection efficiency.(3) the utility model analogue means can simulate the solid space structure of unconformity body, change traditionally plane of unconformity is described as that wire or planar structure exist effectively can not simulate the problem that plane of unconformity affects Gas Accumulation.(4) the utility model experimental facilities is also designed with base and support, makes bottom oil reservoir simulator variable pitch by base and support, can inquire into ground layer box body occurrence (i.e. inclination angle) to the impact of oil and gas accumulating efficiency.(5) the utility model according to the control of pressure and flow, can realize the control to simulation process in experimentation, and filled pressure, flow velocity is on the impact of Gas Accumulation.
Accompanying drawing explanation
Accompanying drawing 1 is the structure chart of unconformity barrier oil-gas reservoir physical simulation experiment device in the utility model embodiment 1.
Accompanying drawing 2 is the structural representation of the utility model embodiment ground layer box body.
Accompanying drawing 3 is the structural representation of the utility model embodiment simulating chamber I.
Accompanying drawing 4 is the structural representation of the utility model embodiment simulating chamber II.
Accompanying drawing 5 is the structural representation of the utility model embodiment simulating chamber III.
Accompanying drawing 6 is the structural representation of the utility model embodiment unconformity cabin body.
Accompanying drawing 7 is the structural representation of the utility model embodiment fault zone casing.
Accompanying drawing 8 is the structure chart of unconformity barrier oil-gas reservoir physical simulation experiment device in the utility model embodiment 2.
Accompanying drawing 9 is the structural representation of the utility model embodiment 2 medium-height trestle and base.
Accompanying drawing 10-13 is unconformity barrier oil-gas reservoir physical simulation experiment illustraton of model in the utility model embodiment 2.
In figure, 1, ground layer box body, 2, unconformity cabin body, 3, fault zone casing, 4, oil filler point, 5, oil outlet, 6, simulating chamber I, 7, simulating chamber II, 8, simulating chamber III, 9, oil hose, 10, pressure maintaining valve, 11, pressure meter, 12, flow instrument, 13, oil transportation bucket, 14, compression pump, 15, oil hose, 16, pressure-regulating valve, 17, flow instrument, 18, slideway, 19, fluid acquisition hole, 20, draw-in groove, 21, handle, 22, clamp, 23, cabin body, 24, hatchcover, 25, the base plate of unconformity cabin body, 26, switching knob, 27, hatchcover axis of rotation, 28, base, 29, support, 30, retractable support lever, 31, soft rubber protection pad, 32, control handle, 33, bolt, 34, fluid collection vials, A, 150 micron grain size quartz sands, B, 300 micron grain size quartz sands, C, 350 micron grain size quartz sands, D, 400 micron grain size quartz sands, E, 500 micron grain size quartz sands, F, 750 micron grain size quartz sands, G, 900 micron grain size quartz sands.
Detailed description of the invention
Below in conjunction with accompanying drawing and several embodiment, experimental facilities of the present utility model is further detailed.
Embodiment 1: as shown in Figure 1, a kind of unconformity barrier oil-gas reservoir physical simulation experiment device, comprise oil-gas stratigraphic deposits simulator, the unconformity cabin body 2 that this hydrocarbon stratum simulator comprises ground layer box body 1 and is positioned at above ground layer box body 1, ground layer box body 1 is connected with fault zone casing 3 with the side of unconformity cabin body 2, and the oil filler point 4 on fault zone casing 3 and oil outlet 5 are connected infusion fluid systems and fluid output system respectively; The base plate 25 of the side that described fault zone casing 3 is connected with ground layer box body 1 and unconformity cabin body 2 and unconformity cabin body is equipped with hole; Described ground layer box body 1 comprises three layers of independently simulating chamber, be respectively simulating chamber I 6, simulating chamber II 7, simulating chamber III 8, the length of simulating chamber I 6 is less than the length of simulating chamber II 6, the length of simulating chamber II 7 is less than the length of simulating chamber III 8, simulating chamber I 6, simulating chamber II 7, simulating chamber III 8 all contact with unconformity cabin body 2 and connect, and the two sides of simulating chamber I 6, simulating chamber II 7, simulating chamber III 8 are equipped with hole.The side be connected with ground layer box body 1 and unconformity cabin body 2 in the both sides of simulating chamber and fault zone casing 3 is equipped with hole, and fluid can infiltrate in simulating chamber from fault zone casing 3.Stratum cabinet design three layers of simulating chamber, can the quartz sand of filling 300-1000 micron grain size, represents the scope of medium sand-conglomerate, can meet the needs of lithology combination otherness collocation significantly.
In the present embodiment, as shown in Figure 2, described simulating chamber I 6, simulating chamber II 7, simulating chamber III 8 are drawer type simulating chamber, and adjacent analog is provided with slideway between room, and when needs sand loading, simulating chamber freely can pull out along slideway.
In the present embodiment, the roof and floor of every layer of simulating chamber is nonporous glass plate, can ensure that the Gas Accumulation of every layer of simulating chamber is independently, unaffected each other; The biside plate of every layer of simulating chamber is the glass plate with micropore, the aperture of the micropore on biside plate is 200-300 micron, this aperture is effective to the quartz sand leakproof of particle diameter more than 200 microns, but the seepage flow of oil, gas, water can not be stoped, therefore oil, gas, water can be circulated to both sides by every layer of simulating chamber, fluid can flow to simulating chamber from the fault zone casing of side, is flowing to unconformity cabin body, now can detect unconformity cabin body to the plugging action of Gas Accumulation.
In the present embodiment, as shown in Fig. 2 to 5, the top contacted with unconformity cabin body 2 at every layer of simulating chamber is equipped with fluid acquisition hole 19.In experimentation, fluid acquisition hole can be opened, gather fluid and carry out detection analysis, by comparing the Geochemical Parameters feature of fluid, carrying out the difference of comparative analysis Different Strata unit Hydrocarbon Accumulation Mechanism.For example, the Molecular biomarkers collecting oil sample is analyzed, the geologic chromatographic effect in oil migration process can be studied, thus the understanding of in-depth stratigraphic oil pool Forming Mechanism.
In the present embodiment, as shown in Fig. 2 to 5, the side that every layer of simulating chamber is connected with fault zone casing is equipped with concave draw-in groove 20 and inner concave shape handle 21, and described draw-in groove 20 is connected with the clamp 22 being arranged on fault zone casing 3 side.Draw-in groove, handle and clamp design, can so that simulating chamber and fault zone casing be installed on dismounting.
In the present embodiment, on fault zone body side, the aperture in hole is 200-300 micron.Fault zone casing can the quartz sand of filling 300-1000 micron grain size, represents medium sand-gravel, filling coarse sand particle diameter, permeability can be made to improve, thus improve the migration efficiency of oil gas, shorten the time difference that oil gas enters simulating chamber.
In the present embodiment, as shown in Figure 7, described oil filler point 4 is positioned at the bottom of fault zone casing 3, and oil outlet 5 is positioned at the top of fault zone casing 3, and oil filler point 4 with oil outlet 5 for diagonal angle is arranged.This design of oil filler point and oil outlet ensure that oil gas, at analogue means, migration fully occurs, thus can realize the observation to oil-gas migration phenomenon.
In the present embodiment, as shown in Figure 6, the hatchcover 24 that described unconformity cabin body 2 comprises cabin body 23 and is connected with cabin body 23, can the quartz sand of filling different-grain diameter in cabin body 23, to simulate unconformity weathered clay layer.The base plate 25 of described unconformity cabin body is the glass plate with micropore, and the aperture design of micropore is 75-100 micron, and fluid can freely infiltrate, and all the other side plates are nonporous glass plate, and fluid can not infiltrate.The both sides of cabin body 23 are respectively equipped with 3 bolts 33, cabin body by bolt 33 with its below layer box body 1 fix.The top of hatchcover 24 and described fault zone casing 3 is provided with switching knob 26.Hatchcover is controlled by the switching knob being arranged on its top, and when opening switching knob, hatchcover freely can be opened around hatchcover axis of rotation, to facilitate the needs of the processs of the test such as back-up sand.Control to open fault zone casing, to meet the needs of sand loading by the switching knob at fault zone casing top.
Visual for what ensure in experimentation, in the present embodiment, described unconformity cabin body, fault zone casing and every layer of simulating chamber form by the glass of all-transparent, can bear the operating pressure up to 10MPa.
In the present embodiment, as shown in Figure 1, described infusion fluid systems comprises the oil hose 9 that one end is connected with oil filler point 4 and the pressure maintaining valve 10, pressure meter 11 and the flow instrument 12 that are arranged on successively on oil hose 9, the other end of oil hose 9 is connected with oil transportation bucket 13, and oil transportation bucket 13 is connected with compression pump 14.The control of multiple pressure valve can realize the control to pressure, and pressure meter and flow instrument play monitoring effect to the intensity injecting fluid.During simulated experiment, by the size of inlet pressure, inlet pressure can be investigated to the control action of Gas Accumulation.
In the present embodiment, as shown in Figure 1, described fluid output system comprises the oil hose 15 and the pressure-regulating valve 16 be arranged on successively on oil hose 15 and flow instrument 17 that one end is connected with oil outlet 5, and the other end of oil hose 15 is connected with fluid collection bottle 34.Pressure-regulating valve adjusts mouth pressure, and the output intensity of flow instrument convection cell plays detection effect.When carrying out simulated experiment, when there being excessive fluid to need outwards release in the oil reservoir simulator of stratum, can oil outlet being opened, by fluid output system, excess fluid be discharged simulator, to keep the stability of testing.
Tested by the present embodiment, the Gas Accumulation process at oil-gas stratigraphic deposits simulator different parts can not only be observed, geochemical detection can also be carried out to the oil-gas component entered before and after oil-gas stratigraphic deposits simulator, as carried out chromatography-mass spectroscopy detection, by the mutation analysis oil-gas migration effect phenomenon to biomarker parameter.
Embodiment 2: as shown in Figure 8, a kind of unconformity barrier oil-gas reservoir physical simulation experiment device, comprise oil-gas stratigraphic deposits simulator, the unconformity cabin body 2 that this hydrocarbon stratum simulator comprises ground layer box body 1 and is positioned at above ground layer box body 1, ground layer box body 1 is connected with fault zone casing 3 with the side of unconformity cabin body 2, and infusion fluid systems and fluid output system are connected with the oil filler point 4 on fault zone casing 3 and oil outlet 5 respectively.The base plate 25 of the side that described fault zone casing 3 is connected with ground layer box body 1 and unconformity cabin body 2 and unconformity cabin body is equipped with hole.Described ground layer box body 1 comprises three layers of independently simulating chamber, be respectively simulating chamber I 6, simulating chamber II 7, simulating chamber III 8, the length of simulating chamber I 6 is less than the length of simulating chamber II 7, the length of simulating chamber II 7 is less than the length of simulating chamber III 8, simulating chamber I 6, simulating chamber II 7, simulating chamber III 8 all contact with unconformity cabin body 5 and connect, and the two sides of simulating chamber I 6, simulating chamber II 7, simulating chamber III 8 are equipped with hole.The side be connected with ground layer box body and unconformity cabin body in the both sides of simulating chamber and fault zone casing is equipped with hole, and fluid can infiltrate in simulating chamber from fault zone casing.Described experimental facilities also comprises base 28 and support 29, and support 29 is fixedly installed in one end of base 28, and fault zone casing 3 is fixedly installed in the other end of base 28, and simulating chamber III 8 is positioned on base 28 and support 29, connection bracket 28 and fault zone casing 3.Stratum cabinet design has three layers of simulating chamber, can the quartz sand of filling 300-1000 micron grain size, represents the scope of medium sand-conglomerate, can meet the needs of lithology combination otherness collocation significantly.
In the present embodiment, as shown in Figure 9, described support 29 comprises the scalability support bar 30 be installed on base 28 and the soft rubber protection pad 31 being positioned at support bar top, and soft rubber protection pad 31 is connected with simulating chamber III 8.Regulated the height of scalability support bar 30 by the control handle 32 be arranged on scalability support bar 30, make the variable pitch of oil-gas stratigraphic deposits simulator, in order to the impact of simulated formation occurrence on oil and gas accumulating efficiency.
In the present embodiment, as shown in Figure 2, described simulating chamber I 6, simulating chamber II 7, simulating chamber III 8 are drawer type simulating chamber, and adjacent analog is provided with slideway between room, and when needs sand loading, simulating chamber freely can pull out along slideway.
In the present embodiment, the roof and floor of every layer of simulating chamber is nonporous glass plate, can ensure that the Gas Accumulation of every layer of simulating chamber is independently, unaffected each other; The biside plate of every layer of simulating chamber is the glass plate with micropore, the aperture of the micropore on biside plate is 200-300 micron, this aperture is effective to the quartz sand leakproof of particle diameter more than 200 microns, but the seepage flow of oil, gas, water can not be stoped, therefore oil, gas, water can be circulated to both sides by every layer of simulating chamber, fluid can flow to simulating chamber from the fault zone casing of side, is flowing to unconformity cabin body, now can detect unconformity cabin body to the plugging action of Gas Accumulation.
In the present embodiment, as shown in Fig. 2 to 5, the top contacted with unconformity cabin body 2 at every layer of simulating chamber is equipped with fluid acquisition hole 19.In experimentation, fluid acquisition hole can be opened, gather fluid and carry out detection analysis, by comparing the Geochemical Parameters feature of fluid, carrying out the difference of comparative analysis Different Strata unit Hydrocarbon Accumulation Mechanism.For example, the Molecular biomarkers collecting oil sample is analyzed, the geologic chromatographic effect in oil migration process can be studied, thus the understanding of in-depth stratigraphic oil pool Forming Mechanism.
In the present embodiment, as shown in Fig. 2 to 5, the side that every layer of simulating chamber is connected with fault zone casing is equipped with concave draw-in groove 20 and inner concave shape handle 21, and described draw-in groove 20 is connected with the clamp 22 being arranged on fault zone casing 3 side.Draw-in groove, handle and clamp design, can so that simulating chamber and fault zone casing be installed on dismounting.
In the present embodiment, on fault zone body side, the aperture in hole is 200-300 micron.Fault zone casing can the quartz sand of filling 300-1000 micron grain size, represents medium sand-gravel, filling coarse sand particle diameter, permeability can be made to improve, thus improve the migration efficiency of oil gas, shorten the time difference that oil gas enters simulating chamber.
In the present embodiment, as shown in Figure 7, described oil filler point 4 is positioned at the bottom of fault zone casing 3, and oil outlet 5 is positioned at the top of fault zone casing 3, and oil filler point 4 with oil outlet 5 for diagonal angle is arranged.This design of oil filler point and oil outlet ensure that oil gas, at analogue means, migration fully occurs, thus can realize the observation to oil-gas migration phenomenon.
In the present embodiment, as shown in Figure 6, the hatchcover 24 that described unconformity cabin body 2 comprises cabin body 23 and is connected with cabin body 23, can the quartz sand of filling different-grain diameter in cabin body 23, to simulate unconformity weathered clay layer.The base plate 25 of described unconformity cabin body is the glass plate with micropore, and the aperture design of micropore is 75-100 micron, and fluid can freely infiltrate, and all the other side plates are nonporous glass plate, and fluid can not infiltrate.The both sides of cabin body 23 are respectively equipped with 3 bolts 33, cabin body by bolt 33 with its below layer box body 1 fix.The top of hatchcover 24 and described fault zone casing 3 is provided with switching knob 26.Hatchcover is controlled by the switching knob being arranged on its top, and when opening switching knob, hatchcover freely can be opened around hatchcover axis of rotation, to facilitate the needs of the processs of the test such as back-up sand.Control to open fault zone casing, to meet the needs of sand loading by the switching knob at fault zone casing top.
Visual for what ensure in experimentation, in the present embodiment, described unconformity cabin body, fault zone casing and every layer of simulating chamber form by the glass of all-transparent, can bear the operating pressure up to 10MPa.
In the present embodiment, as shown in Figure 1, described infusion fluid systems comprises the oil hose 9 that one end is connected with oil filler point 4 and the pressure maintaining valve 10, pressure meter 11 and the flow instrument 12 that are arranged on successively on oil hose 9, the other end of oil hose 9 is connected with oil transportation bucket 13, and oil transportation bucket 13 is connected with compression pump 14.The control of multiple pressure valve can realize the control to pressure, and pressure meter and flow instrument play monitoring effect to the intensity injecting fluid.During simulated experiment, by the size of inlet pressure, inlet pressure can be investigated to the control action of Gas Accumulation.
In the present embodiment, as shown in Figure 1, described fluid output system comprises the oil hose 15 and the pressure-regulating valve 16 be arranged on successively on oil hose 15 and flow instrument 17 that one end is connected with oil outlet 5, and the other end of oil hose 15 is connected with fluid collection bottle 34.Pressure-regulating valve adjusts mouth pressure, and the output intensity of flow instrument convection cell plays detection effect.When carrying out simulated experiment, when there being excessive fluid to need outwards release in the oil reservoir simulator of stratum, can oil outlet being opened, by fluid output system, excess fluid be discharged simulator, to keep the stability of testing.
Tested by the present embodiment, the Gas Accumulation process at oil-gas stratigraphic deposits simulator different parts can not only be observed, geochemical detection can also be carried out to the oil-gas component entered before and after oil-gas stratigraphic deposits simulator, as carried out chromatography-mass spectroscopy detection, by the mutation analysis oil-gas migration effect phenomenon to biomarker parameter.
The process that the experimental facilities of the present embodiment carries out testing is as follows:
(1) during experiment, be configured according to unconformity barrier oil-gas reservoir physical simulation experiment model formation oil reservoir simulator as shown in Figure 10, the varigrained quartz sand of different compartment fillings in Figure 10 institute representation model, to represent the difference of deposition and the geologic process such as cementing.In experimentation in simulating chamber I fill 350 micron grain size quartz sands do in sandstone, fill 500 micron grain size quartz sands in simulating chamber II and do gritstone, 750 micron grain size quartz sands are filled as conglomerate in simulating chamber III, in fault zone casing, filling 400 micron grain size quartz sand does middle sandstone, and in the body of unconformity cabin, filling 150 micron grain size quartz sand does the mud stone in weathered clay layer.Adopt in experiment and dye red kerosene replacement crude oil.
Its specific experiment process is:
(1) prepare simulation material, test simulator, detection is carried out to the oil composition before experiment and analyzes, gather the experimental data before experiment.
(2) fault zone casing is extracted from the draw-in groove of ground layer box body.
(3) unconformity cabin body is unloaded from the top of ground layer box body.
(4) by simulating chamber I, simulating chamber II and simulating chamber III respectively from pull on the slideway ground layer box body out, simulating chamber I, simulating chamber II and simulating chamber III fill 350 micron grain size quartz sands, 500 micron grain size quartz sands, 750 micron grain size quartz sands respectively, after the quartz sand of the good requirement of experiment particle diameter of filling, carry out compacting, then close, shift origin-location onto.
(5) opened the hatchcover of unconformity cabin body by switching knob, after the quartz sand of filling 150 micron grain size, carry out compacting, then close the hatchcover of unconformity cabin body, buckle well switching knob.
(6) open fault zone casing, after the quartz sand of filling 150 micron grain size, carry out compacting, then close fault zone casing.
(7) ground layer box body and unconformity cabin body are connected and fixed, then by the draw-in groove of fault zone casing insert into stratum casing.
(8) height of adjusting pole, makes stratigraphic dip be 30 degree, is positioned on support and base, oil-gas stratigraphic deposits simulator and base is fixed the oil-gas stratigraphic deposits simulator assembled with bolt.
(9) configure infusion fluid systems and fluid output system according to Fig. 8, the oil hose of infusion fluid systems is connected with oil filler point.
(10) regulate injection pressure to be 5MPa according to requirement of experiment, setting charge velocity is 5-10ml/min, starts to inject band from oil filler point and dyes red kerosene.
(11) the poly-phenomenon of crude oil fortune is observed in experimentation, and real-time camera or video recording, gather oil sample from the fluid acquisition mouth of three layers of simulating chamber.
(12) when excess fluid discharged by needs, open oil outlet, excess fluid is flow in receiving flask by oil hose.
(13), after reaching requirement of experiment, physical simulation experiment is stopped.
(14) geochemical detection is carried out to the product collected.
(15) Binding experiment is observed, and the difference of data before and after comparative analysis experiment, analysis design mothod process, sums up Gas Accumulation mechanism.
In this experiment, because the quartz sand particle size in fault zone casing is little, its particle diameter is less than the quartz sand particle size in simulating chamber II and simulating chamber III, its fluid permeability is also less than the fluid permeability of simulating chamber II and simulating chamber III relatively, therefore, oil migration rate in fault zone casing is lower, and more oil is migrated to simulating chamber II and simulating chamber III, under the capping of unconformity cabin body, form more oil accumulation.
(2) during experiment, be configured according to unconformity barrier oil-gas reservoir physical simulation experiment model formation oil reservoir simulator as shown in figure 11, the varigrained quartz sand of different compartment fillings in Figure 11 institute representation model, to represent the difference of deposition and the geologic process such as cementing.In experimentation in simulating chamber I fill 350 micron grain size quartz sands do in sandstone, fill 500 micron grain size quartz sands in simulating chamber II and do gritstone, 750 micron grain size quartz sands are filled as conglomerate in simulating chamber III, in fault zone casing, filling 900 micron grain size quartz sand does conglomerate, and in the body of unconformity cabin, filling 150 micron grain size quartz sand does the mud stone in weathered clay layer.Adopt in experiment and dye red kerosene replacement crude oil.
Its specific experiment process is:
(1) prepare simulation material, test simulator, detection is carried out to the oil composition before experiment and analyzes, gather the experimental data before experiment.
(2) fault zone casing is extracted from the draw-in groove of ground layer box body.
(3) unconformity cabin body is unloaded from the top of ground layer box body.
(4) by simulating chamber I, simulating chamber II and simulating chamber III respectively from pull on the slideway ground layer box body out, simulating chamber I, simulating chamber II and simulating chamber III fill 350 micron grain size quartz sands, 500 micron grain size quartz sands, 750 micron grain size quartz sands respectively, after the quartz sand of the good requirement of experiment particle diameter of filling, carry out compacting, then close, shift origin-location onto.
(5) opened the hatchcover of unconformity cabin body by switching knob, after the quartz sand of filling 150 micron grain size, carry out compacting, then close the hatchcover of unconformity cabin body, buckle well switching knob.
(6) open fault zone casing, after the quartz sand of filling 900 micron grain size, carry out compacting, then close fault zone casing.
(7) ground layer box body and unconformity cabin body are connected and fixed, then by the draw-in groove of fault zone casing insert into stratum casing.
(8) height of adjusting pole, makes stratigraphic dip be 30 degree, is positioned on support and base, oil-gas stratigraphic deposits simulator and base is fixed the oil-gas stratigraphic deposits simulator assembled with bolt.
(9) configure infusion fluid systems and fluid output system according to Fig. 8, the oil hose of infusion fluid systems is connected with oil filler point.
(10) regulate injection pressure to be 5MPa according to requirement of experiment, setting charge velocity is 5-10ml/min, starts to inject band from oil filler point and dyes red kerosene.
(11) the poly-phenomenon of crude oil fortune is observed in experimentation, and real-time camera or video recording, gather oil sample from the fluid acquisition mouth of three layers of simulating chamber.
(12) when excess fluid discharged by needs, open oil outlet, excess fluid is flow in receiving flask by oil hose.
(13), after reaching requirement of experiment, physical simulation experiment is stopped.
(14) geochemical detection is carried out to the product collected.
(15) Binding experiment is observed, and the difference of data before and after comparative analysis experiment, analysis design mothod process, sums up Gas Accumulation mechanism.
In this experiment, because the quartz sand particle size in fault zone casing is large, the height of permeability relatively layer box body, oil can upwards be migrated along fault zone casing rapidly, secondly oil can than migrating to simulating chamber III faster, and under the capping of unconformity cabin body, oily gathering more in simulating chamber III forms unconformity barrier oil reservoir, and simulating chamber I is due to poor permeability, the oil mass that migration and gathering occur is little.
(3) during experiment, be configured according to unconformity barrier oil-gas reservoir physical simulation experiment model formation oil reservoir simulator as shown in figure 12, the varigrained quartz sand of different compartment fillings in Figure 12 institute representation model, to represent the difference of deposition and the geologic process such as cementing.In experimentation in simulating chamber I fill 750 micron grain size quartz sands do in sandstone, fill 500 micron grain size quartz sands in simulating chamber II and do gritstone, 350 micron grain size quartz sands are filled as conglomerate in simulating chamber III, in fault zone casing, filling 400 micron grain size quartz sand does middle sandstone, and in the body of unconformity cabin, filling 150 micron grain size quartz sand does the mud stone in weathered clay layer.Adopt in experiment and dye red kerosene replacement crude oil.
Its specific experiment process is:
(1) prepare simulation material, test simulator, detection is carried out to the oil composition before experiment and analyzes, gather the experimental data before experiment.
(2) fault zone casing is extracted from the draw-in groove of ground layer box body.
(3) unconformity cabin body is unloaded from the top of ground layer box body.
(4) by simulating chamber I, simulating chamber II and simulating chamber III respectively from pull on the slideway ground layer box body out, simulating chamber I, simulating chamber II and simulating chamber III fill 750 micron grain size quartz sands, 500 micron grain size quartz sands, 350 micron grain size quartz sands respectively, after the quartz sand of the good requirement of experiment particle diameter of filling, carry out compacting, then close, shift origin-location onto.
(5) opened the hatchcover of unconformity cabin body by switching knob, after the quartz sand of filling 150 micron grain size, carry out compacting, then close the hatchcover of unconformity cabin body, buckle well switching knob.
(6) open fault zone casing, after the quartz sand of filling 150 micron grain size, carry out compacting, then close fault zone casing.
(7) ground layer box body and unconformity cabin body are connected and fixed, then by the draw-in groove of fault zone casing insert into stratum casing.
(8) height of adjusting pole, makes stratigraphic dip be 30 degree, is positioned on support and base, oil-gas stratigraphic deposits simulator and base is fixed the oil-gas stratigraphic deposits simulator assembled with bolt.
(9) configure infusion fluid systems and fluid output system according to Fig. 8, the oil hose of infusion fluid systems is connected with oil filler point.
(10) regulate injection pressure to be 5MPa according to requirement of experiment, setting charge velocity is 5-10ml/min, starts to inject band from oil filler point and dyes red kerosene.
(11) the poly-phenomenon of crude oil fortune is observed in experimentation, and real-time camera or video recording, gather oil sample from the fluid acquisition mouth of three layers of simulating chamber.
(12) when excess fluid discharged by needs, open oil outlet, excess fluid is flow in receiving flask by oil hose.
(13), after reaching requirement of experiment, physical simulation experiment is stopped.
(14) geochemical detection is carried out to the product collected.
(15) Binding experiment is observed, and the difference of data before and after comparative analysis experiment, analysis design mothod process, sums up Gas Accumulation mechanism.
In this experiment, because the lithologic allocation of simulating chamber I, simulating chamber II and simulating chamber III changes, because which form different oil-gas migration, the poly-phenomenon of fortune, the permeability of simulating chamber I is maximum, and the permeability of simulating chamber III is minimum, therefore more oil to simulating chamber I migration, under the capping of unconformity cabin body, forms oil accumulation with the speed faster that compares.Secondly the oily migration rate of simulating chamber II is higher, and simulating chamber III is due to poor permeability, and oily migration rate obviously declines, and the oil mass of gathering also reduces relatively.
(4) during experiment, be configured according to unconformity barrier oil-gas reservoir physical simulation experiment model formation oil reservoir simulator as shown in fig. 13 that, the varigrained quartz sand of different compartment fillings in Figure 13 institute representation model, to represent the difference of deposition and the geologic process such as cementing.In experimentation in simulating chamber I fill 350 micron grain size quartz sands do in sandstone, fill 500 micron grain size quartz sands in simulating chamber II and do gritstone, 750 micron grain size quartz sands are filled as conglomerate in simulating chamber III, in fault zone casing, filling 400 micron grain size quartz sand does middle sandstone, and in the body of unconformity cabin, filling 300 micron grain size quartz sand does the mud stone in weathered clay layer.Adopt in experiment and dye red kerosene replacement crude oil.
Its specific experiment process is:
(1) prepare simulation material, test simulator, detection is carried out to the oil composition before experiment and analyzes, gather the experimental data before experiment.
(2) fault zone casing is extracted from the draw-in groove of ground layer box body.
(3) unconformity cabin body is unloaded from the top of ground layer box body.
(4) by simulating chamber I, simulating chamber II and simulating chamber III respectively from pull on the slideway ground layer box body out, simulating chamber I, simulating chamber II and simulating chamber III fill 350 micron grain size quartz sands, 500 micron grain size quartz sands, 750 micron grain size quartz sands respectively, after the quartz sand of the good requirement of experiment particle diameter of filling, carry out compacting, then close, shift origin-location onto.
(5) opened the hatchcover of unconformity cabin body by switching knob, after the quartz sand of filling 300 micron grain size, carry out compacting, then close the hatchcover of unconformity cabin body, buckle well switching knob.
(6) open fault zone casing, after the quartz sand of filling 400 micron grain size, carry out compacting, then close fault zone casing.
(7) ground layer box body and unconformity cabin body are connected and fixed, then by the draw-in groove of fault zone casing insert into stratum casing.
(8) height of adjusting pole, makes stratigraphic dip be 15 degree, is positioned on support and base, oil-gas stratigraphic deposits simulator and base is fixed the oil-gas stratigraphic deposits simulator assembled with bolt.
(9) configure infusion fluid systems and fluid output system according to Fig. 8, the oil hose of infusion fluid systems is connected with oil filler point.
(10) regulate injection pressure to be 5MPa according to requirement of experiment, setting charge velocity is 5-10ml/min, starts to inject band from oil filler point and dyes red kerosene.
(11) the poly-phenomenon of crude oil fortune is observed in experimentation, and real-time camera or video recording, gather oil sample from the fluid acquisition mouth of three layers of simulating chamber.
(12) when excess fluid discharged by needs, open oil outlet, excess fluid is flow in receiving flask by oil hose.
(13), after reaching requirement of experiment, physical simulation experiment is stopped.
(14) geochemical detection is carried out to the product collected.
(15) Binding experiment is observed, and the difference of data before and after comparative analysis experiment, analysis design mothod process, sums up Gas Accumulation mechanism.
In this experiment, because unconformity cabin body filling particle diameter is the quartz sand of 300 meters, permeability improves relatively, is deteriorated to the shut-off capacity of oil; Simultaneously due to the unconformity cabin bodily form at a tilt angle, thus slowly upwards not migrated along unconformity cabin body under the effect of buoyancy by the oil blocked.This experiment shows, the lithology of unconformity body is very crucial to formation stratigraphic oil pool, and unconformity body not only as plugged zone, also can form oil gas lateral migration passage.
From above-described embodiment, as the extension of above-described embodiment, according to the different shape of unconformity, the Level Change unconformity inclination angle of support can be changed, and change the inclination angle of oil-gas stratigraphic deposits simulator, complete the change of unconformity configuration, realize the Gas Accumulation process of simulated formation plane of unconformity.
Above-described embodiment is used for explaining the utility model, instead of limits the utility model, and in the protection domain of spirit of the present utility model and claim, any amendment make the utility model and change, all fall into protection domain of the present utility model.
Claims (10)
1. a unconformity barrier oil-gas reservoir physical simulation experiment device, it is characterized in that: described experimental facilities comprises oil-gas stratigraphic deposits simulator, this hydrocarbon stratum simulator comprises ground layer box body and is positioned at the unconformity cabin body above ground layer box body, the side of ground layer box body and unconformity cabin body is connected with fault zone casing, and the oil filler point on fault zone casing and oil outlet are connected infusion fluid systems and fluid output system respectively; The base plate of the side that described fault zone casing is connected with ground layer box body and unconformity cabin body and unconformity cabin body is equipped with hole; Described ground layer box body comprises multilayer independently simulating chamber, and the length of upper strata simulating chamber is less than the length of lower floor's simulating chamber, and every layer of simulating chamber all contacts with unconformity cabin body and connect, and the two sides of every layer of simulating chamber are equipped with hole.
2. unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 1, is characterized in that: described ground layer box body comprises three layers of independently drawer type simulating chamber, and adjacent analog is provided with slideway between room.
3. the unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 1 or 2 any one, is characterized in that: the roof and floor of every layer of simulating chamber is nonporous glass plate, and biside plate is the glass plate with micropore.
4. the unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 1 or 2 any one, is characterized in that: the top contacted with unconformity cabin body at every layer of simulating chamber is equipped with fluid acquisition hole.
5. unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 2, it is characterized in that: the side that every layer of simulating chamber is connected with fault zone casing is equipped with concave draw-in groove and inner concave shape handle, and described draw-in groove is connected with the clamp being arranged on fault zone body side.
6. unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 1, it is characterized in that: described oil filler point is positioned at the bottom of fault zone casing, oil outlet is positioned at the top of fault zone casing, and oil filler point and oil outlet are diagonal angle arranges.
7. unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 1, is characterized in that: the hatchcover that described unconformity cabin body comprises cabin body and is connected with cabin body, and the top of hatchcover and described fault zone casing is provided with switching knob; The base plate of described unconformity cabin body is the glass plate with micropore, and all the other side plates are nonporous glass plate.
8. unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 1, it is characterized in that: described experimental facilities also comprises base and support, support is fixedly installed in one end of base, fault zone casing is fixedly installed in the other end of base, bottom simulating chamber is positioned on base and support, connection bracket and fault zone casing.
9. unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 8, it is characterized in that: described support comprises the scalability support bar be installed on base and the soft rubber protection pad being positioned at support bar top, and soft rubber protection pad is connected with the simulating chamber of the bottom.
10. unconformity barrier oil-gas reservoir physical simulation experiment device according to claim 1, is characterized in that: described unconformity cabin body, fault zone casing and every layer of simulating chamber form by the glass of all-transparent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178954A (en) * | 2015-10-29 | 2015-12-23 | 中国石油大学(华东) | Unconformity screened oil-gas reservoir physical simulation experimental device and method |
| CN108269482A (en) * | 2018-01-26 | 2018-07-10 | 中国地质大学（武汉） | A kind of polymorphic type trap and the three-dimensional visualization teaching mode of oil-gas reservoir |
-
2015
- 2015-10-29 CN CN201520850159.2U patent/CN205117336U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178954A (en) * | 2015-10-29 | 2015-12-23 | 中国石油大学(华东) | Unconformity screened oil-gas reservoir physical simulation experimental device and method |
| CN108269482A (en) * | 2018-01-26 | 2018-07-10 | 中国地质大学（武汉） | A kind of polymorphic type trap and the three-dimensional visualization teaching mode of oil-gas reservoir |
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