CN105259330B - A kind of indoor experimental apparatus and use the method that this device carries out profile control - Google Patents
A kind of indoor experimental apparatus and use the method that this device carries out profile control Download PDFInfo
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- CN105259330B CN105259330B CN201510655369.0A CN201510655369A CN105259330B CN 105259330 B CN105259330 B CN 105259330B CN 201510655369 A CN201510655369 A CN 201510655369A CN 105259330 B CN105259330 B CN 105259330B
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Abstract
The invention provides a kind of indoor experimental apparatus and the method using this device to carry out profile control, the problem solving position and the size etc. of the high infiltration strip formed during existing laboratory experiment also cannot judge poly-driving.Specifically a kind of pressure measurement of invention note adopts integrated instrument, is laid on two dimensional surface well pattern heterogeneous core model；Utilize one-dimensional rock core to find out the relation between the pore volume of high infiltration strip and barometric gradient, adopt integrated instrument by pressure measurement note and record the force value of each pressure tap, calculate the barometric gradient between each point；Find the relation of barometric gradient and high infiltration strip pore volume, and determine high infiltration strip pore volume according to above-mentioned relation, then utilize pressure measurement note to adopt integrated instrument and the profile control agent injection high infiltration strip identical with pore volume will complete profile control.Invention device is capable of being accurately positioned the position of high infiltration strip and implementing profile control for high infiltration strip, so that indoor profile control process provides device and technical support closer to on-site actual situations, the desk research for profile control technique.
Description
Technical field
The present invention relates to the apparatus and method of a kind of profile control in oil-gas field development field, refer more particularly to a kind of poly-room driven
The device and method of profile control accurate to high infiltration strip in interior experimentation.
Background technology
Polymer displacement of reservoir oil is in each oil field large-scale application at present, and achieves preferable oil displacement efficiency in the early stage.But
Along with the increase of recovery time, oil displacement effect of polymer starts gradually to be deteriorated, and subregion has produced inefficient cycle, i.e.
The injecting extremely low to the development degree of remaining oil or cannot employ at all of number of polymers.Its basic reason is to gather through for many years
The exploitation driven, high infiltration strip is generally grown, more prominent with interlayer contradiction in causing layer so that displacing fluid is prominent in high infiltration strip
Enter, seriously inhibit the exploitation effect of polymer.
For problem above, the major measure that actual mining site is taked is by the well-log information of each well head in block well pattern
Judge position and the basic parameter of high infiltration strip, and then select suitable profile control agent that the high infiltration strip of different situations is carried out essence
True profile control.
In terms of laboratory experiment, owing to being limited by model and method, the technological means of existing laboratory experiment also without
The basic parameters such as the position of high infiltration strip that method is formed during judging poly-driving, size, cannot realize under these conditions to height
The accurate profile control of infiltration strip, can only use general profile control technique, so that laboratory experiment is poor to the simulation that mining site is actual, and institute
Obtain experimental result and there is also larger difference, it is impossible to give on-the-spot accurately guidance and help.
Summary of the invention
The present invention will be for problem above, it is provided that a kind of being capable of is accurately positioned the poly-high infiltration strip driving stage generation
Position and the experimental provision for high infiltration strip enforcement profile control, and then the experiment side using this device to carry out indoor profile control is provided
Method, so that indoor profile control process provides device to prop up with technology closer to on-site actual situations, the desk research for profile control technique
Support.
For achieving the above object, the present invention provide a kind of indoor experimental apparatus, including constant-flux pump, piston container,
Some Pressure gauges, some valves, some pressure measurement note adopt integrated instrument and graduated cylinder, wherein advection delivery side of pump and the entrance of piston container
Pipeline connects, and the outlet line of this piston container is connected with the injection end of core model, the production end of core model and graduated cylinder pipe
Line connects, and core model is laid some pressure monitoring points；Wherein:
It is cuboid container that described pressure measurement note adopts the main body of integrated instrument, and container internal baffle, container is equally divided into by baffle plate
The left chamber mutually completely cut off and right chamber, the center, upper surface of left chamber and right chamber is respectively provided with left bolt hole and right bolt
Hole, the lower surface of left chamber and right chamber is symmetrical in baffle plate and lays left fluid hole and right fluid hole respectively.
Described pressure measurement note is adopted integrated instrument and is also included two bolt plugs, two bolt plugs be respectively welded at left bolt hole and
In left chamber immediately below right bolt hole and the bottom surface of right chamber；The main body of described bolt plug is cylindric, bolt plug
Upper surface arranges round table-like groove, the center fixed vertical stud of groove.
Described pressure measurement note is adopted integrated instrument and is comprised additionally in two sharp mouth bolts, arranges axial hollow tunnel inside point mouth bolt,
Arranging boss structure in point mouth bolt body, two sharp mouth bolts are connected with left-hand thread hole and right-hand thread hole respectively, two sharp mouths
The top of bolt connects Pressure gauge and valve respectively, is threaded structure, with bolt plug in the sharp mouthpiece of point mouth bolt bottom
The hollow tunnel that connects in metacone mouth bolt of vertical stud be formed as closed chamber.
It addition, this pressure measurement note is adopted integrated instrument and is also included bakelite cylinder and the O-ring seal in a band duct, described bakelite cylinder master
Body is cylinder, and body interior arranges mutual disconnected left fluid course and right fluid course, the inlet of above-mentioned fluid course
Perforate is in the upper surface of bakelite cylinder respectively, and the liquid outlet of fluid course then distinguishes perforate in the sidewall of bakelite cylinder, bakelite cylinder upper end
Face is bonded at bottom cuboid container, and the inlet of the left fluid hole fluid course left with bakelite cylinder of container bottom is involutory, right flow liquid
Hole is involutory with the inlet of right fluid course；O-ring seal is enclosed within above bakelite cylinder liquid outlet.
Arranging installing hole on each pressure monitoring point in above-mentioned core model, the degree of depth of installing hole reaches rock core
High permeability formation, pressure measurement note adopts the bakelite cylinder of integrated instrument and inserts in this installing hole, and the liquid outlet of bakelite cylinder is corresponding to rock core high permeability formation
Middle part, the diameter of installing hole is equal with the external diameter of O-ring seal, and the space between O-ring seal hole installed above and bakelite cylinder is filled
Enter epoxy resin.
Use said apparatus, the method carrying out indoor profile control, specifically comprise the following steps that
(1), pressure measurement note is adopted integrated instrument, be laid on two dimensional surface well pattern heterogeneous core model；
(2), utilize one-dimensional rock core to find out the corresponding relation between the pore volume of high infiltration strip and barometric gradient, select simultaneously
Take a kind of profile control agent and measure profile control agent gelation time；
(3), by be laid with pressure measurement note adopt integrated instrument two dimensional surface well pattern nonhomogeneous soil layers evacuate, saturation water is saturated
Oil also drives experimental program carry out displacement according to poly-, poly-drive injection pressure steadily after, adopt integrated instrument by pressure measurement note and record each survey
The force value of pressure point, calculates the barometric gradient between each point；
(4) relation of barometric gradient and high infiltration strip pore volume, is found；And determine high infiltration strip hole according to above-mentioned relation
Gap volume size, then utilizes pressure measurement note to adopt integrated instrument and is injected in high infiltration strip by the profile control agent identical with pore volume, wait to adjust
Profile control is i.e. completed after cuing open agent plastic.
Beneficial effect:
Patent of the present invention provides the benefit that solving laboratory experiment cannot judge that the position of high infiltration strip and shortage have pin
Apparatus and method problem to property profile control, can realize carrying out the profile control of field test effectively by apparatus of the present invention and method
Simulation, solve the problem that laboratory experiment is effectively connected with field test, use these apparatus and method to be evaluated not only may be used
With the macroscopical exploitation situation before and after understanding profile control, it is also possible to evaluate profile control effect, can effectively regulate tune according to experimental result
Cut open conceptual design the most reasonable, if need to optimize, thus provide strong experiment to ensure for field test.
Accompanying drawing explanation
Figure 1A is the structural representation that pressure measurement note adopts integrated instrument.
Figure 1B is that pressure measurement note adopts integrated instrument body interior structural map.
Fig. 2 is the structural representation of bolt plug.
Fig. 3 is the structural representation of point mouth bolt.
Fig. 4 is the structural representation of bakelite cylinder.
Fig. 5 is exposed core model schematic diagram.
Fig. 6 is pressure field and seepage field propagation trajectories schematic diagram.
Fig. 7 is that pressure tap lays schematic diagram.
Fig. 8 is A type core model schematic diagram in embodiment 1.
Fig. 9 is Type B core model schematic diagram in embodiment 1.
Figure 10 is high infiltration strip pore volume and barometric gradient graph of a relation.
Figure 11 is time and the graph of a relation of pressure after gel injects.
Figure 12 is the structural representation of experimental provision of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and apparatus of the present invention and method are described further by specific embodiment:
Embodiment 1
One, pressure measurement note adopts the making of integrated instrument
It is a kind of can to realize carrying out pressure monitoring and displacing fluid in certain point simultaneously and note and adopt that described pressure measurement note adopts integrated instrument
Instrument, is combined shown in Figure 1B by Figure 1A: this apparatus subject be length 50mm, width 25mm, highly 25mm, wall thickness be the length of 7mm
Cube container 1, container internal baffle 3-3, container is equally divided into left chamber 3-1 and right chamber 3-2, two chambers by baffle plate 3-3
Internal liquid can not mutually channelling；The center, upper surface of left chamber 3-1 and right chamber 3-2 is respectively provided with a left side of a diameter of 5mm
Bolt hole 3-4 and right bolt hole 3-5, the lower surface of left chamber 3-1 and right chamber 3-2 is symmetrical in baffle plate 3-3 and lays respectively directly
Footpath is the left fluid hole 3-6 and right fluid hole 3-7 of 3mm, and the center distance of two fluid holes is 8mm.
Described instrument also includes that two bolt plugs 6, two bolt plugs are respectively welded at left bolt hole 3-4 and right bolt
On left chamber 3-1 immediately below the 3-5 of hole and the bottom surface of right chamber 3-2.As shown in Figure 2: the main body of described bolt plug 6 is cylinder
Shape, the upper surface of main body arranges round table-like groove 6-1, the center fixed vertical stud 6-2 of groove 6-1, this vertical stud 6-2's
External diameter is 3mm.
Described instrument comprises additionally in two hollow sharp mouth bolts 7, as shown in Figure 3: described point mouth bolt 7, whole height
For 60mm, external diameter is 5mm, a diameter of 3mm of boring duct 7-1, and point mouth bolt body also sets up boss structure 7-2.
After two sharp mouth bolts 7 are connected with left-hand thread hole 3-4 and right-hand thread hole 3-5 respectively, its top be respectively used to connect Pressure gauge 5 and
Valve 4, the sharp mouthpiece of its underpart is inserted on the vertical stud 6-2 of corresponding bolt plug, and hollow tunnel 7-1 is by this vertical spiral shell
Post 6-2 blocks, and after point mouth bolt 7 is screwed into, its internal hollow tunnel 7-1 is capable of closing；The work of above-mentioned boss structure 7-2
With being for regulating the degree of depth that hollow sharp mouth bolt 7 enters down.
It addition, this instrument also includes bakelite cylinder 1 and the O-ring seal 2 in a band duct, as shown in Figure 4: described bakelite cylinder
Main body is a diameter of 10mm, and height is 45mm cylinder, and body interior arranges mutual disconnected left fluid course 1-1 and right liquid stream
Passage 1-2, perforate is in the upper surface of bakelite cylinder 1 respectively for the inlet of above-mentioned fluid course, and the liquid outlet of fluid course is then distinguished
Perforate is in the sidewall of bakelite cylinder 1, and the diameter of four mouths is all 3mm.Epoxy resin is smeared in bakelite cylinder 1 upper surface, is bonded at cuboid
Bottom container 1 and dry fixing, after fixing, the left fluid hole 3-6 of container bottom and left fluid course 1-1 pair of bakelite cylinder
Closing, right fluid hole 3-7 is involutory with right fluid course 1-2, and seals against each other between fluid hole and fluid course；O-ring seal 2 overlaps
Above bakelite cylinder 1 liquid outlet at 3mm.
Two, prepare two dimensional surface well pattern nonhomogeneous soil layers and carry out pressure monitoring point laying
1, two dimensional surface well pattern nonhomogeneous soil layers is prepared according to realistic simulation reservoir
As shown in Figure 5: through sandstone screening, the layering rock core method of producing such as compacting, drying produce a size of 300 ×
2 layers of heterogeneous core model of 300 × 45mm, injection-production method uses a note one to adopt.
2, core model upward pressure layout of the monitoring points
Displacing agent is in two dimensional surface well pattern core model migration process, and the propagation of pressure and the seepage flow of displacing fluid have
Directly contact, as shown in Figure 6: from injecting well 100 to extraction well 200, isobar 110 and the seepage line 140 in spindle wire
Interweave.Because the laying of pressure tap pressure field to be considered seepage field to be combined.Simultaneously as two dimensional surface well pattern physics
Moulded dimension is relatively big, away from main stream line 130 direction exist pressure and displacing fluid involve less than region 120, in this region 120
Lay pressure monitoring point and there is no practical significance, it is only necessary to select the position having fluid flowing and pressure to have change.
Propagation trajectories in conjunction with pressure field in upper figure Yu seepage field carries out the laying of pressure monitoring point, and result is as shown in Figure 7.
According to Pythagorean theorem, main stream line a length of 300Mm, first lays 5 pressure monitoring points, by main stream line on main stream line
Being equally divided into six sections, every segment length is 50mm；Then point centered by each pressure monitoring point on main stream line, 50Mm length
Degree is the length of side, uses regular hexagon cloth to manage to carry out pressure monitoring point laying, and the most any one pressure monitoring point is adjacent pressure
Distance d of monitoring point is equal to 50mm。
In figure: 41, No. 1 monitoring point, 42, No. 2 monitoring points, 43, No. 3 monitoring points, 44, No. 4 monitoring points, 45, No. 5 monitorings
Point, 46, No. 6 monitoring points, 47, No. 7 monitoring points, 48, No. 8 monitoring points, 49, No. 9 monitoring points, 51, No. 10 monitoring points, 52, No. 11
Monitoring point, 53, No. 12 monitoring points, 54, No. 13 monitoring points, 55, No. 14 monitoring points, 56, No. 15 monitoring points, 57, No. 16 monitoring points,
58, No. 17 monitoring points, 59, No. 18 monitoring points, 61, No. 19 monitoring points.
Three, the corresponding relation between barometric gradient and high infiltration strip volume is explored
In order to obtain the volume of high infiltration strip in displacement test intuitively, determine the injection rate of gel profile control agent, need
Try to achieve the variation relation of high infiltration strip volume and barometric gradient.
1, core model prepares
As can be seen from figures 8 and 9: now select A, B two types core model, moulded dimension is all 50*45*45mm, and
Being all two-layer heterogeneous core, two types rock core respective layer position permeability is identical；Difference is that A type core model often uses
Rule method of producing, high permeability formation is uniformly sprinkled into the refined salt of different grams in manufacturing process by Type B core model, it is thus achieved that high infiltration strip
101.Refined salt particle volume, between 20 ~ 40 mesh, is sprinkled into grams and is respectively 0.5g, 1g, 1.5g, 2g, 2.5g, thus obtain 5 pieces of B
Type rock core is respectively B1, B2, B3, B4, B5.
2, the method obtaining high infiltration strip pore volume is:
1. A type rock core is evacuated, saturated formation water, measure pore volume；
The most respectively 5 blocks of Type B rock cores are evacuated, saturated formation water, then carry out water drive 2 hours with 0.3ml/min flow velocity,
Guarantee refined salt fully dissolves and carries out measurement model pore volume after core model；
3. by 5 kinds of Type B rock pore volumes, pore volume with A type rock core does difference respectively, and income value is in each Type B rock core
The pore volume of high infiltration strip.Concrete obtained experimental data result is as shown in table 1 below:
The pore volume table of the high infiltration strip of 16 blocks of rock cores of table
3, the relation curve between barometric gradient and high infiltration strip volume is drawn
Use the simulated oil that Daqing Oil Factory crude oil configuration becomes by above-mentioned 6 pieces of rock core saturated oils, note according to on-the-spot reality
Entering scheme and carry out displacement, i.e. carry out early stage water drive to moisture content with grand celebration one factory sewage and reach 98%, concentration is 2000mg/L, divides
Son amount be the polymer flooding of 16,000,000 to injection end pressure stability, calculate barometric gradient, formula is as follows:
The data obtained result such as table 2 below:
According to upper table 2, by high infiltration strip pore volume and barometric gradient relation drafting pattern, result is as shown in Figure 10.
Four, the time of profile control agent plastic is determined
In order to ensure that profile control agent completes plastic in rock core in experimentation, it is possible to significantly improve profile control effect, need
Profile control agent to be determined is the time of plastic in rock core.
This part use monitoring injection pressure method whether determine profile control agent plastic, i.e. in displacement test be polymerized
Thing drives injection pressure and compares, when gradually tending to be steady after after injection profile agent, injection pressure rises violently just it is believed that profile control agent
Through plastic, laboratory operating procedures is as follows:
1, the preparation of profile control agent
The present embodiment profile control agent uses polymer gel, and polymer therein is common polyacrylamide, and molecular weight is
16000000, concentration is 1500mg/L；Cross-linking agent uses organic chromium (chromium acetate), is polymer and Cr with the proportioning of polymer3+'s
Mass ratio is 20:1, is configured by polymer gel in this ratio；
2, the preparation of testing rock core
Test rock core used still uses Type B rock core, according to high infiltration strip pore volume, Type B rock core be divided into B1, B2, B3,
B4、B5.Drive carrying out early stage water drive after these 5 pieces of rock core evacuations, saturated formation water, saturated oils with poly-, drive pressure stability until poly-,
Read force value；
3, being injected separately into by polymer gel in these five blocks of rock cores, the amount of injection gel is equal to the high infiltration strip of each rock core
Pore volume；
4, after gel injects, again carry out polymer flooding and monitor and poly-drive injection pressure.Poly-drive beginning opportunity be
Gel is poly-immediately after injecting to be driven, until poly-drive pressure steadily after read force value；Repeat above-mentioned 3 steps, the poly-opportunity driving beginning
After injecting 5 hours for gel, read to gather and drive smooth pressure；Being iteratively repeated above-mentioned 3 steps, the poly-opportunity driving beginning prolongs every time
Long 5 hours, until poly-driving stops experiment after smooth pressure increasing degree significantly reduces or do not increases.Above-mentioned experiment obtains reality
Test data result as shown in figure 11.
Test result indicate that polymer gel 30 hours later displacement pressure increasing degrees inside rock core significantly subtract
Lack, it is taken as that polymer gel is basically completed in internal 30 hours later plastics of rock core.
Five, the installation of experimental provision
As shown in Figure 12: the outlet of constant-flux pump 10 is connected with the suction line of piston container 20, this piston container 20
Outlet line is connected with the injection end 30 of core model, and the production end 50 of core model is connected with graduated cylinder 60 pipeline；Piston container
20 built with displacing fluid, and in experimentation, constant-flux pump 10 provides liquid flow capacity, by internal for piston container 20 displacing fluid from
Rock core injects well to rock core extraction well displacement, observes liquid and water outlet, the situation such as fuel-displaced at extraction well by graduated cylinder 60；
On each pressure monitoring point on above-mentioned two dimensional surface well pattern nonhomogeneous soil layers, installing hole is set, installs
The degree of depth in hole reaches the high permeability formation of rock core, and pressure measurement note is adopted the bakelite cylinder 1 of integrated instrument 40 and inserted in this installing hole, bakelite cylinder go out liquid
Mouth is corresponding to the middle part of rock core high permeability formation, and the diameter of installing hole is equal with the external diameter of O-ring seal 2, and O-ring seal 4 is installed above
Space between hole and bakelite cylinder is filled with epoxy resin；
Each pressure measurement note is adopted and is connected with a Pressure gauge 5 and a valve 4 respectively on two sharp mouth bolts 7 of integrated instrument 40
Connecing, point mouth bolt lower port is threaded on the stud 6-2 of bolt plug 6, and point mouth bolt inner chamber is closed.
Six, said apparatus is utilized to carry out the displacement of reservoir oil and profile control experiment
1, experiment condition is chosen:
Oil is selected to be configured to, for Daqing Oil Factory crude oil and kerosene, the simulated oil that viscosity is 9.8mPa s；Saturated water is
Salinity is the formation water of 6778mg/L；Polymer is that Daqing Refinery company produces plain polypropylene amide dry powder, and molecular weight is
16000000, concentration is 1500mg/L；Cross-linking agent uses organic chromium (chromium acetate), is polymer and Cr with the proportioning of polymer3+'s
Mass ratio is 20:1, is configured by polymer gel in this ratio；Injection rate 0.3ml/min.
2, oil displacement experiment prepares:
Additionally choose one piece of two dimensional surface well pattern heterogeneous core model A, with above-mentioned pressure monitoring point of having laid
Core model B carries out Experimental comparison, calculates two pieces of rock core basic parameters, parameter such as table 3 below:
As seen from the above table, the basic parameter of two blocks of rock cores substantially close to.Continue above-mentioned rock core is evacuated, saturated stratum
Water, saturation simulation oil.
3, reservoir oil displacement scheme is established:
First water drive is to moisture content 98%, more poly-drives 0.6PV, and last water drive is to moisture content 98%.
4, the displacement of reservoir oil and profile control experimentation:
1. to core model A, the reservoir oil displacement scheme of above-mentioned establishment is used to carry out the displacement of reservoir oil；
2. to core model B, when using the reservoir oil displacement scheme of above-mentioned establishment to carry out the displacement of reservoir oil, poly-drive injection 0.27PV after pressure
Tending towards stability, now read the force value of each pressure monitoring point of laboratory experiment profile control device, numerical value see table 4:
In table partial pressure value compared with point and pressure be zero point be owing to being limited by swept volume, this region is not driven
For fluid wave and or swept volume less, therefore its pressure cannot function as judging the foundation of high infiltration strip, but main stream line near zone
Involve situation preferable, can be as the foundation of the high infiltration strip that gets the wrong sow by the ear.
According to the pressure tap artwork shown in Fig. 7, bring the data such as adjacent pressure and 2 distances into barometric gradient formula,
Obtain the barometric gradient of point-to-point transmission, and find corresponding at the high infiltration strip pore volume shown in Figure 10 with barometric gradient graph of a relation
High infiltration strip pore volume, finds that there is height between No. 4 monitoring points and No. 7 monitoring points, No. 7 monitoring points and No. 8 monitoring points oozes bar
Band, barometric gradient result of calculation is respectively 0.32(MPa/m) and 0.5(MPa/m), understand in conjunction with Figure 10, corresponding high infiltration strip
Volume is respectively 10.7cm3With 8.4 cm3。
3. the injection of profile control agent: core model B is poly-drives experiment and temporarily cease, adopts integrated instrument by pressure measurement note and oozes producing height
The position injection of polymer gel of band.
The method of injection of polymer gel is: the valve that the pressure measurement note of No. 4 pressure taps and No. 8 pressure taps is adopted on integrated instrument is even
Connecing injection device, the pressure measurement note of No. 7 pressure taps is adopted valve on integrated instrument and is connected graduated cylinder, and three valves are opened simultaneously, No. 4 pressure taps
Inject 10.7cm3Polymer gel and No. 8 pressure taps inject 8.4 cm3Polymer gel, i.e. injected slurry volume are equal to high infiltration strip hole
Gap volume, the liquid picked out by No. 7 pressure tap graduated cylinders is outwelled after reading oil pump capacity, and three pressure measurement notes is adopted valve on integrated instrument
Simultaneously close off；After injection, rock core is placed more than 30 hours, it is therefore an objective to allow the abundant plastic of polymer gel.Rock core places 30
After hour gel plastic, carry on experiment, residue 0.33PV polymer is injected.
5, experimental result contrast
Specifically it is shown in Table 5:
As can be seen from the above table, two types rock core waterflood recovery efficiency factor is close, illustrates that this experiment has the most right
Ratio property, drives the stage poly-, gathers and drives common raising 12% recovery ratio, and in core model B, gather after driving pressure stability in core model A
(after being i.e. filled with 0.27PV) recovery ratio has improved 8.6%, illustrate follow-up 0.33PV polymer in core model A due to
Being affected by high infiltration strip, recovery ratio only improve only 3.4%.Through the determination to high infiltration strip position in core model B
And effectively block, follow-up 0.33PV polymer increases substantially recovery ratio again, and raising value is 9.3%, after profile control after
Continuous waterflood recovery efficiency factor raising value, also close to about one times of not profile control water drive, illustrates not only to change the accurate profile control of high infiltration strip
Being apt to the oil displacement efficiency of polymer, the displacement capability of sequent water flooding have also been obtained and significantly improves.
The defect of current laboratory test can be overcome by the present embodiment, apparatus of the present invention and method, be fully able to
It is exactly found high infiltration strip position, and launches profile control targetedly, laboratory experiment and field practice have been contacted more closely
Coming, determination and profile control for laboratory experiment middle and high infiltration pillar location in the future provide powerful guarantee.
Claims (2)
1. an indoor experimental apparatus, adopts one including constant-flux pump, piston container, some Pressure gauges, some valves, some pressure measurement note
Body instrument and graduated cylinder, wherein advection delivery side of pump is connected with the suction line of piston container, the outlet line of this piston container and rock
The injection end of heart model connects, and the production end of core model is connected with graduated cylinder pipeline, and core model is laid some pressure monitorings
Point；It is characterized in that:
It is cuboid container that described pressure measurement note adopts the main body of integrated instrument, and container internal baffle, container is equally divided into mutually by baffle plate
The left chamber of isolation and right chamber, the center, upper surface of left chamber and right chamber is respectively provided with left bolt hole and right bolt hole,
It is symmetrical in baffle plate on the lower surface of left chamber and right chamber and lays left fluid hole and right fluid hole respectively；
Described pressure measurement note is adopted integrated instrument and is also included that two bolt plugs, two bolt plugs are respectively welded at left bolt hole and right spiral shell
In left chamber immediately below keyhole and the bottom surface of right chamber；The main body of described bolt plug is cylindric, the upper end of bolt plug
Face arranges round table-like groove, the center fixed vertical stud of groove；
Described pressure measurement note is adopted integrated instrument and is comprised additionally in two sharp mouth bolts, arranges axial hollow tunnel, point mouth inside point mouth bolt
Arranging boss structure in bolt body, two sharp mouth bolts are connected with left-hand thread hole and right-hand thread hole respectively, two sharp mouth bolts
Top connect Pressure gauge and valve respectively, be threaded structure in the sharp mouthpiece of point mouth bolt bottom, with hanging down of bolt plug
The hollow tunnel in point mouth bolt is made to be formed as closed chamber after straight Stud connection；
It addition, this pressure measurement note is adopted integrated instrument and also included bakelite cylinder and O-ring seal, described bakelite cylinder main body is cylinder, in main body
Portion arranges mutual disconnected left fluid course and right fluid course, and the perforate respectively of the inlet of above-mentioned fluid course is in bakelite cylinder
Upper surface, the liquid outlet of fluid course is then distinguished perforate and is bonded at the bottom of cuboid container in the sidewall of bakelite cylinder, bakelite cylinder upper surface
Portion, the inlet of the left fluid hole fluid course left with bakelite cylinder of container bottom is involutory, and right fluid hole enters with right fluid course
Liquid mouth is involutory；O-ring seal is enclosed within above bakelite cylinder liquid outlet；
Arranging installing hole on each pressure monitoring point in above-mentioned core model, the degree of depth of installing hole reaches the height of rock core and oozes
Layer, pressure measurement note is adopted the bakelite cylinder of integrated instrument and is inserted in this installing hole, and the liquid outlet of bakelite cylinder corresponds to the middle part of rock core high permeability formation,
The diameter of installing hole is equal with the external diameter of O-ring seal, and the space between O-ring seal hole installed above and bakelite cylinder is filled with epoxy
Resin.
2. the method using the indoor experimental apparatus described in claim 1 to carry out profile control, specifically comprises the following steps that
(1), pressure measurement note is adopted integrated instrument to be laid on two dimensional surface well pattern heterogeneous core model；
(2), utilize one-dimensional rock core to find out the corresponding relation between the pore volume of high infiltration strip and barometric gradient, choose one simultaneously
Plant profile control agent and measure profile control agent gelation time；
(3), being evacuated by the two dimensional surface well pattern heterogeneous core model adopting integrated instrument with pressure measurement note, saturation water saturated oils is also pressed
Drive experimental program carry out displacement according to poly-, poly-drive injection pressure steadily after, adopt integrated instrument by pressure measurement note and record each pressure tap
Force value, calculates the barometric gradient between each point；
(4) relation of barometric gradient and high infiltration strip pore volume, is found；And determine high infiltration strip pore-body according to above-mentioned relation
Long-pending size, then utilizes pressure measurement note to adopt integrated instrument and is injected in high infiltration strip by the profile control agent identical with pore volume, treat profile control agent
Profile control is i.e. completed after plastic.
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| CN107965302B (en) * | 2017-10-11 | 2020-10-09 | 中国石油天然气股份有限公司 | Driver and driver processing device and method |
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|---|---|---|---|---|
| CN108333224B (en) * | 2018-01-31 | 2020-08-18 | 中国海洋石油集团有限公司 | Device and method for measuring gel forming time of weak gel system in rock core |
| CN108535161B (en) * | 2018-03-10 | 2020-09-22 | 东北石油大学 | Method for carrying out displacement experiment after fully saturated oil is carried out on matrix-high permeability strip rock core |
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| US4687055A (en) * | 1986-04-07 | 1987-08-18 | Leggett Henry H | Wire-line controlled down-hole shut-in tool for wells |
| US7774183B2 (en) * | 2006-07-11 | 2010-08-10 | Schlumberger Technology Corporation | Flow of self-diverting acids in carbonate reservoirs |
| CN101245699A (en) * | 2008-03-07 | 2008-08-20 | 东营市石大综合技术有限责任公司 | On-line injection profile-control and flooding-control method and device |
| CN102704901A (en) * | 2012-05-25 | 2012-10-03 | 中国石油化工股份有限公司 | Apparatus and method for multipoint pressure measuring long-core deep profile control experiment |
| CN102817602B (en) * | 2012-08-31 | 2015-01-21 | 中国石油天然气股份有限公司 | On-line profile control method and device for polymer flooding oil field |
| CN104833618B (en) * | 2015-02-14 | 2017-08-29 | 东北石油大学 | To heterogeneous reservoir simulate the method and apparatus of profile control in laboratory |
| CN204476381U (en) * | 2015-03-18 | 2015-07-15 | 西安始创能源科技有限公司 | The overall regulation device in a kind of reservoir water self adaptation deep |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107965302B (en) * | 2017-10-11 | 2020-10-09 | 中国石油天然气股份有限公司 | Driver and driver processing device and method |
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