CN104675371A - Complex oil displacement experimental method by means of alternately injecting gel and polymer solution after polymer flooding and follow-up water flooding - Google Patents
Complex oil displacement experimental method by means of alternately injecting gel and polymer solution after polymer flooding and follow-up water flooding Download PDFInfo
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- CN104675371A CN104675371A CN201410810649.XA CN201410810649A CN104675371A CN 104675371 A CN104675371 A CN 104675371A CN 201410810649 A CN201410810649 A CN 201410810649A CN 104675371 A CN104675371 A CN 104675371A
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- 229920000642 polymer Polymers 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 40
- 238000002474 experimental method Methods 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000035699 permeability Effects 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 31
- 239000011435 rock Substances 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 239000008398 formation water Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 229910001430 chromium ion Inorganic materials 0.000 claims description 2
- 238000001879 gelation Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- 230000033764 rhythmic process Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 46
- 230000000694 effects Effects 0.000 description 4
- 239000012266 salt solution Substances 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000011206 ternary composite Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Colloid Chemistry (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a complex oil displacement experimental method by means of alternately injecting gel and polymer solution after polymer flooding and follow-up water flooding. The complex oil displacement experimental method includes particular steps of firstly, manufacturing large flat cores; secondly, carrying out polymer flooding; thirdly, alternately injecting the gel and the polymer solution to displace oil in multiple cycles; fourthly, carrying out follow-up water flooding; fifthly, collating data and computing ultimate recovery factors. The complex oil displacement experimental method has the advantages that the economical and effective method for tapping the potential of the residual oil in follow-up water flooding stages is found on the basis of distribution laws of the residual oil after polymer flooding is carried out and reservoir permeability variation, accordingly, the recovery factors can be greatly increased, and the complex oil displacement experimental method contributes for actual oil recovery work to a certain extent.
Description
Technical field
The present invention relates to chemical displacement of reservoir oil technical field, particularly relate to and a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding.
Background technology
Large and the serious oil reservoir of heterogeneity for permeability grade, when there is water drive, oil well shifts to an earlier date water breakthrough, and moisture content rises very fast, the low inferior problem of oil recovery factor.The viscosity of polymer solution own is higher, effectively can improve water-oil mobility ratio, is conducive to alleviating interlayer contradiction, improves fluid entry profile, expands the swept volume of displacement liquid, thus improves oil recovery factor.For this type of oil reservoir, directly can carry out polymer displacement of reservoir oil before water drive, to improve oilfield exploitation efficiency.Although polymer displacement of reservoir oil effectively can avoid above-mentioned reservoir water drive produced problem, poly-drive rear underground and still have the crude oil of about 50% to remain underground, therefore, the recovery ratio improving postpolymer flood residual oil is particularly important.
The limited main cause of enhancing oil recovery in polymer flooding is that to alter non-available water circulating phenomenon that is poly-and sequent water flooding along macropore serious, and the utilization rate of polymer is low, and middle hyposmosis position crude oil can not get effective displacement.Gather and drive the displacement of reservoir oil of rear employing ternary composite driving technology, still can improve recovery ratio about 10%, but the performance characteristics such as the absorption of mixture in reservoir of porous medium of different component chemical agent, diffusion and migration differ greatly, cause " the look general effect " and undesirable " cooperative effect " during the displacement of reservoir oil in reservoir pore, and when using highly basic auxiliary agent, in extraction process, all too many levels produce serious scale, affect oil well normally to produce, the series of problems such as pump detection period shortening and Produced Liquid breaking emulsion and dewatering difficulty; Postpolymer flood carries out foam flooding again, and recovery ratio can improve 10%, but at the guide-testing well-teams that Oil Field carries out, effect is undesirable and construction is complicated; Poly-drive the feasibility that rear employing microorganism drives the method improving recovery ratio further and carried out desk research yet, but indoor raising recovery ratio value is not high, and the requirement of microorganism formation condition is harsher, generalization is not strong.
Therefore, on the basis of Remaining Oil Distribution and Reservoir Permeability change after poly-driving, it is imperative to seek poly-method of driving rear cost-effective excavation potentiality of remaining oil.
Summary of the invention
In view of above-mentioned analysis, the present invention aims to provide and a kind ofly poly-drives the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, in order to solve the not high technical problem of existing oil recovery rate.
Object of the present invention is mainly achieved through the following technical solutions:
Poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that, concrete steps are as follows:
Step one, first prepare massive plate rock core
1. adopt the quartz sand of more than quartz content 99wt%, again screening with vibration screening machine is more than 40-60 order, 60-100 order, 100-200 order, 200 orders four ranks; By E-44 epoxy resin, face dibatyl phithalate, ethylenediamine and acetone and be mixedly configured into bonding adhesive;
2. gradation prepares quartz sand and the bonding adhesive of different ratio, and add the natural core chip of 20wt% after artificial stranding sand, gradation loads massive plate rock core mould, each pressurization 1 minute;
3. dry in the insulating box massive plate rock core suppressed being placed on 100 DEG C;
4. by the corner of the massive plate rock core of oven dry and center cohesive end lid, each end cap is laid the pin thread of a Φ 8mm;
5. core surface is done frictioning process, frictioning twice, when preventing from casting, bonding adhesive infiltrates rock core;
6. utilize epoxy resin by rock core cast molding in a mold, massive plate rock core is positive rhythm change, and permeability increases successively from top to bottom.
Massive plate rock core is of a size of long 600mm, wide 600mm, high 45mm; Chemical agent purity used is all more than chemical pure.
Step 2, then carry out poly-driving, and calculate and poly-ly drive rear recovery ratio:
1. rear saturated formation water simulated formation water salinity scope of being found time by massive plate rock core is 6000mg/L ~ 6400mg/L, measures the water phase permeability K of rock core
wwith degree of porosity Φ
w;
2. be injected in rock core by simulated oil under the experimental temperature of 40 DEG C ~ 50 DEG C, till the rock core port of export not there are flowing out, the initial oil saturation measuring massive plate rock core is 52.92% (volume ratio, after comprising, moisture content is all volume ratio);
3. after injection 0.56PV ~ 0.64PV polymer, stop injecting, carry out after water drive to moisture content reaches 97% ~ 99%, stop displacement (wherein polymer is molecular weight 2,500 ten thousand, concentration is the hydrolyzed polyacrylamide of 1200mg/L);
4. in displacement process, record displacement velocity, time, oil production, aquifer yield, pressure;
5. change graduated cylinder metering output liquid measure and oil mass every half an hour, measure moisture content, reach 97% ~ 99% to moisture content, close pump, and calculate and poly-ly drive rear recovery ratio.
Step 3, the+0.02PV ~ 0.03PV polymer solution many rounds alter least-squares displacement of reservoir oil of employing 0.02PV ~ 0.03PV gel, gel gelation time is 12h ~ 24h, inject the gel+polymer solution displacement of reservoir oil 10 ~ 13 round altogether, 0.40PV ~ 0.78PV, record alter least-squares each stage each round displacement velocity, time, oil production, aquifer yield, pressure (the chromium ion gel rubber system that wherein gel is molecular weight 2,500 ten thousand, polymer concentration is 1800mg/L, poly-double ratio is 40:1).
Step 4, under the constant flow rate of 2 ~ 4mL/min, sequent water flooding to moisture content is after 97% ~ 99%, stops displacement; Displacement velocity, time, oil production, aquifer yield, pressure is recorded in displacement process.
Step 5, disposal data, calculate ultimate recovery.
Test heterogeneity massive plate core parameters used as shown in table 1 below.
Table 1 heterogeneity massive plate core parameters
Beneficial effect of the present invention: because the present invention's direct using polymer before water drive carries out the displacement of reservoir oil, effectively can avoid the Character of Viscous Finger caused due to profit viscosity differences, slow down the rate of climb of moisture content; In addition under identical displacement pore volume injected (PV number), directly carry out poly-recovery ratio of driving higher than carrying out poly-recovery ratio of driving after water drive again, and the displacement of reservoir oil time is short, recovers the oil effective.
Other features and advantages of the present invention will be set forth in the following description, and, becoming apparent from manual of part, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write manual, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing only for illustrating the object of specific embodiment, and does not think limitation of the present invention, and in whole accompanying drawing, identical reference symbol represents identical parts.
Fig. 1 is injected slurry volume and the change curve between recovery ratio, pressure and moisture content.
Detailed description of the invention
Specifically describe the preferred embodiments of the present invention below in conjunction with accompanying drawing, wherein, accompanying drawing forms the application's part, and together with embodiments of the present invention for explaining principle of the present invention.
Embodiment one
(1) model of having cast is found time after 6h, saturated Prof. Du Yucang salt solution, measured hole porosity;
(2) model of saturation Prof. Du Yucang salt solution is placed on more than constant temperature 12h in insulating box (45 DEG C);
(3), till oil is driven to model not water outlet, initial oil saturation is determined;
(4) with conventional sewage, 2500 ten thousand super high molecular weights, (viscosity is 40 ~ 50mPa.s to concentration 1200mg/L, viscosity 20 ~ 25mPa.s after shear thinning) the polymer solution displacement of reservoir oil of preparing, injection rate is 3mL/min, injection rate is 0.60PV, and water drive is to moisture content 98% afterwards, calculates to gather to drive+sequent water flooding recovery ratio;
(5) 0.03PV gel rubber system slug is injected;
(6) the surfactant solution slug of 0.03PV is injected, record Liquid output and oil production;
(7) parallel laboratory test of many rounds is carried out according to experimental program and (5), (6) step.
According to experimental procedure, the first injection of polymer solution 0.60PV displacement of reservoir oil, following injected water reaches 98% to moisture, calculates oil recovery factor; Point slug injects 0.03PV gel rubber system solution, correspondingly divides slug to inject 0.03PV polymer solution, calculate altogether each composite slug inject after pressure and output liquid measure, to injecting gel+polymer slug total amount reaches 0.72PV; Following injected water reaches 98% to moisture, metering output liquid measure and extraction oil mass, calculates recovery ratio.In order to evaluate the oil displacement efficiency of gel profile-controlling rear surface activator solution.
Embodiment two
(1) model of having cast is found time after 6h, saturated Prof. Du Yucang salt solution, measured hole porosity;
(2) model of saturation Prof. Du Yucang salt solution is placed on more than constant temperature 12h in insulating box (45 DEG C);
(3), till oil is driven to model not water outlet, initial oil saturation is determined;
(4) with conventional sewage, 2500 ten thousand super high molecular weights, (viscosity is 40 ~ 50mPa.s to concentration 1200mg/L, viscosity 20 ~ 25mPa.s after shear thinning) the polymer solution displacement of reservoir oil of preparing, injection rate is 3mL/min, injection rate is 0.64PV, and water drive is to moisture content 98% afterwards, calculates to gather to drive recovery ratio;
(5) 0.02PV gel rubber system slug is injected;
(6) polymer slug of 0.02PV is injected, record Liquid output and oil production;
(7) parallel laboratory test of many rounds is carried out according to experimental program and (5), (6) step.
According to experimental procedure, the injection of polymer solution 0.64PV displacement of reservoir oil, following injected water reaches 98% to moisture, calculates oil recovery factor; Point slug injects 0.02PV gel rubber system solution, correspondingly divides slug to inject 0.02PV polymer solution, calculate each composite slug inject after pressure and output liquid measure, to injecting gel+polymer slug total amount reaches 0.44PV; Following injected water reaches more than 99% to moisture, metering output liquid measure and extraction oil mass, calculates recovery ratio.The profile control effect that the profile control effect injected in order to the many rounds of smaller slug and large slug inject.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (9)
1. poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that, concrete steps are as follows:
Step one, first prepare massive plate rock core;
Step 2, then carry out poly-driving, and calculate and poly-ly drive rear recovery ratio;
Step 3, many rounds alter least-squares gel+polymer solution displacement of reservoir oil;
Step 4, sequent water flooding;
Step 5, disposal data, calculate ultimate recovery.
2. according to claim 1ly a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that, described step one specifically comprises the steps:
1. adopt the quartz sand of more than quartz content 99wt%, again screening with vibration screening machine is more than 40-60 order, 60-100 order, 100-200 order, 200 orders four ranks; By E-44 epoxy resin, face dibatyl phithalate, ethylenediamine and acetone and be mixedly configured into bonding adhesive;
2. gradation prepares quartz sand and the bonding adhesive of different ratio, and add the natural core chip of 20wt% after artificial stranding sand, gradation loads massive plate rock core mould, each pressurization 1 minute;
3. dry in the insulating box massive plate rock core suppressed being placed on 100 DEG C;
4. by the corner of the massive plate rock core of oven dry and center cohesive end lid, each end cap is laid the pin thread of a Φ 8mm;
5. core surface is done frictioning process, frictioning twice, when preventing from casting, bonding adhesive infiltrates rock core;
6. utilize epoxy resin by rock core cast molding in a mold, massive plate rock core is positive rhythm change, and permeability increases successively from top to bottom.
3. according to claim 2ly a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that, described massive plate rock core is of a size of long 600mm, wide 600mm, high 45mm; Permeability 600-800 ~ 1200-2000 × 10
-3μm
2; Voids volume 5136cm
3; Degree of porosity 31.70%, initial oil saturation 52.92%; Irreducible water saturation 47.01%.
4. according to claim 2ly a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that, described E-44 epoxy resin, the purity of facing dibatyl phithalate, ethylenediamine and acetone are all more than chemical pure.
5. according to claim 1ly a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that, described step 2 specifically comprises the steps:
1. found time by massive plate rock core rear saturation simulation formation water, simulated formation water salinity scope is 6000mg/L ~ 6400mg/L, measures the water phase permeability K of rock core
wwith degree of porosity Φ
w;
2. be injected in rock core by simulated oil under the experimental temperature of 40 DEG C ~ 50 DEG C, till the rock core port of export not there are flowing out, the initial oil saturation measuring massive plate rock core is 52.92%;
3. after injection 0.56PV ~ 0.64PV polymer, stop injecting, after carrying out sequent water flooding to moisture content to 97% ~ 99%, stop displacement;
4. in displacement process, record displacement velocity, time, oil production, aquifer yield, pressure;
5. change graduated cylinder metering output liquid measure and oil mass every half an hour, measure moisture content, reach 97% ~ 99% to moisture content, close pump, and calculate and poly-ly drive rear recovery ratio.
6. according to claim 5ly a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that: described polymer is molecular weight 2,500 ten thousand, concentration is the hydrolyzed polyacrylamide of 1200mg/L.
7. according to claim 1ly a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that: described many rounds alter least-squares gel+polymer solution displacement of reservoir oil is: adopt+0.02PV ~ 0.04PV polymer solution many rounds alter least-squares the displacement of reservoir oil of 0.01PV ~ 0.03PV gel, gel gelation time is 12h ~ 24h, inject the gel+polymer solution displacement of reservoir oil 10 ~ 14 round altogether, 0.3PV ~ 0.98PV, record alter least-squares each stage each round displacement velocity, time, oil production, aquifer yield, pressure.
8. according to claim 7ly a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that: the chromium ion gel rubber system that described gel is molecular weight 2,500 ten thousand, polymer concentration is 1800mg/L, poly-double ratio is 40:1.
9. according to claim 1ly a kind ofly poly-drive the complex oil displacing experimental technique adding alter least-squares gel and polymer solution after sequent water flooding, it is characterized in that: described sequent water flooding is, under the constant flow rate of 2 ~ 4mL/min, sequent water flooding to moisture content is after 97% ~ 98%, stops displacement; Displacement velocity, time, oil production, aquifer yield, pressure is recorded in displacement process.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863587A (en) * | 2016-06-01 | 2016-08-17 | 中国海洋石油总公司 | Method for determining alternating injection time of polymer flooding |
| CN105971572A (en) * | 2016-06-01 | 2016-09-28 | 中国海洋石油总公司 | Determination method for alternate injection opportunity of gel/polymer flooding |
| CN106050197A (en) * | 2016-07-21 | 2016-10-26 | 东北石油大学 | Analysis method for oil enhancing production mechanism of weak-based ASP flooding |
| CN106126829A (en) * | 2016-06-27 | 2016-11-16 | 西南石油大学 | A kind of method evaluating displacement of reservoir oil association polymer oil reservoir conformability |
| CN106639976A (en) * | 2017-02-15 | 2017-05-10 | 中海石油(中国)有限公司 | Simulation experiment method and device capable of increasing crude oil recovery ratio of multi-layer heterogeneous reservoir |
| CN108267561A (en) * | 2017-12-25 | 2018-07-10 | 中国石油天然气股份有限公司 | Method and device for determining injection speed of indoor constant-speed experiment |
| CN108661612A (en) * | 2017-03-27 | 2018-10-16 | 中国石油化工股份有限公司 | A kind of method that high salinity reservoirs water drive improves recovery ratio |
| CN109973061A (en) * | 2017-12-28 | 2019-07-05 | 东北石油大学 | A kind of three or three slug system of note |
| CN113236208A (en) * | 2021-04-20 | 2021-08-10 | 中海油能源发展股份有限公司 | Experimental device and method for physically simulating polymer flooding production liquid descending rule |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863587A (en) * | 2016-06-01 | 2016-08-17 | 中国海洋石油总公司 | Method for determining alternating injection time of polymer flooding |
| CN105971572A (en) * | 2016-06-01 | 2016-09-28 | 中国海洋石油总公司 | Determination method for alternate injection opportunity of gel/polymer flooding |
| CN105863587B (en) * | 2016-06-01 | 2018-10-16 | 中国海洋石油集团有限公司 | A kind of determination method of polymer flooding alternating injection timing |
| CN106126829A (en) * | 2016-06-27 | 2016-11-16 | 西南石油大学 | A kind of method evaluating displacement of reservoir oil association polymer oil reservoir conformability |
| CN106050197A (en) * | 2016-07-21 | 2016-10-26 | 东北石油大学 | Analysis method for oil enhancing production mechanism of weak-based ASP flooding |
| CN106050197B (en) * | 2016-07-21 | 2019-01-29 | 东北石油大学 | A kind of analysis method of Weak Base ASP Flood stimulation machanism |
| CN106639976A (en) * | 2017-02-15 | 2017-05-10 | 中海石油(中国)有限公司 | Simulation experiment method and device capable of increasing crude oil recovery ratio of multi-layer heterogeneous reservoir |
| CN108661612A (en) * | 2017-03-27 | 2018-10-16 | 中国石油化工股份有限公司 | A kind of method that high salinity reservoirs water drive improves recovery ratio |
| CN108267561A (en) * | 2017-12-25 | 2018-07-10 | 中国石油天然气股份有限公司 | Method and device for determining injection speed of indoor constant-speed experiment |
| CN109973061A (en) * | 2017-12-28 | 2019-07-05 | 东北石油大学 | A kind of three or three slug system of note |
| CN113236208A (en) * | 2021-04-20 | 2021-08-10 | 中海油能源发展股份有限公司 | Experimental device and method for physically simulating polymer flooding production liquid descending rule |
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