CN107664675A - Based on thickening type emulsification surfactants washing oil rate analysis method - Google Patents

Based on thickening type emulsification surfactants washing oil rate analysis method Download PDF

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CN107664675A
CN107664675A CN201610619228.8A CN201610619228A CN107664675A CN 107664675 A CN107664675 A CN 107664675A CN 201610619228 A CN201610619228 A CN 201610619228A CN 107664675 A CN107664675 A CN 107664675A
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oil
mass
sand
surfactant
surfactant solution
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孙焕泉
曹绪龙
杨勇
郭兰磊
马宝东
周敏
张继超
程玉桥
张书栋
严兰
徐辉
汤战宏
张文
张林彦
丁玉娟
李菲菲
赵方剑
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China Petroleum and Chemical Corp
Exploration and Development Research Institute of Sinopec Henan Oilfield Branch Co
Exploration and Development Research Institute of Sinopec Shengli Oilfield Co
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China Petroleum and Chemical Corp
Exploration and Development Research Institute of Sinopec Henan Oilfield Branch Co
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    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract

The present invention provides a kind of washing oil rate analysis method based on thickening type emulsification surfactants, including:Step 1, aging oil-sand and surfactant solution are made;Step 2, a certain amount of aging oil-sand and surfactant solution are weighed, determines the oil mass that surfactant solution washes out;Step 3, blank assay is done with distilled water, determines the oil mass that distilled water washes out;Step 4, a certain amount of crude oil and surfactant solution are weighed, it is determined that total oil mass;Step 5, the washing oil rate of the oil mass, the oil mass that distilled water washes out and the total oil mass calculating surfactant that are washed out according to surfactant solution.The present invention can intuitively, fast and accurately evaluate eluting power of the surfactant to oil-sand surface adhesion oil, evaluated suitable for the stronger surfactant properties of emulsifying capacity, screening and assessment for emulsification surfactants oil displacement system provides technical support, and it is significant further to improve recovery ratio to more than 95 DEG C ultrahigh-temperature oil reservoirs.

Description

Based on thickening type emulsification surfactants washing oil rate analysis method
Technical field
The present invention relates to oilfield exploitation technical field, especially relates to one kind and is washed based on thickening type emulsification surfactants Oil cut rate analysis method.
Background technology
More than 95 DEG C ultrahigh-temperature petroleum resources are big, and such oil reservoir enters High water cut successively at present, high recovery percent of reserves is developed Stage, conventional water drive be difficult it is further improve recovery ratio, and the molecular structure of polyacrylamide oil displacement agent determine it is conventional Polymer displacement of reservoir oil tech is difficult in adapt to more than 95 DEG C of ultrahigh-temperature reservoir condition, and existing oil displacement system can not meet ultrahigh-temperature oil reservoir Increase substantially the needs of recovery ratio, it would be highly desirable to establish the chemical displacement of reservoir oil technology suitable for ultrahigh-temperature oil reservoir.
Emulsification surfactants technology of reservoir sweep is a kind of brand-new chemical displacement of reservoir oil method, and emulsion system relies on its special thing Physicochemical performance, by the synergistic function between surfactant, assign oil displacement system heatproof, salt resistance, emulsification thickening, height The displacement of reservoir oil, the easily characteristic such as injection are imitated, suitable for V class ultrahigh-temperature oil reservoir, further improving oil recovery factor for such oil reservoir has Significance.
Emulsion-surfactant (E-S) oil displacement system is made up of self-emulsifying surfactant and low-tension surfactant, The main function of wherein self-emulsifying surfactant is to promote water-oil phase spontaneous emulsification under reservoir conditions, is formed highly viscous Water-oil emulsion, preferentially enter high permeability zone and block, so as to low-permeability layer position in starting, expand swept volume;Low-tension surface The main function of activating agent is to reduce oil water interfacial tension, improves oil displacement efficiency.Self-emulsifying surfactant enters head behind stratum It is secondary to promote water-oil phase to form highly viscous water-oil emulsion, enter by highly viscous emulsion caused in pore constriction The effect such as squeeze, draw, dragging, effectively driveing the residual oil for being distributed in edge and corner position, while aid in low-tension surfactant Oil displacement efficiency is improved by emulsifying entrainment effect and strong wash oil character.
It is the emulsification surfactants in ground injection low viscosity that emulsification surfactants, which improve recovery efficiency technique, in oil reservoir In promote water-oil phase to form high viscosity WO emulsion to expand swept volume, while carried using low-tension surfactant High oil displacement efficiency.It is mainly characterized by oil phase solubilising aqueous phase and forms water-in-oil emulsion, emulsion phase viscosity compared with crude oil increase, emulsification shape State is unstable (quick emulsification, fast emulsion breaking).Promote in oil reservoir water-oil phase formed water-in-oil emulsion shape premise be exactly It is required that the eluting power that the emulsification surfactants in emulsification surfactants oil displacement system have had to oil-sand surface adhesion oil, Eluting power of the surfactant to oil-sand surface adhesion oil generally is characterized with washing oil rate, is analyzed for conventional washing oil rate at present Method, the emulsifiability of surfactant can result in oil-water emulsion layer during petroleum ether extraction washes out crude oil, and And be difficult to eliminate, so as to disturb extraction results, prevent spectrophotometer from accurately detecting.In order to quickly and accurately characterize emulsion The wash oil character of surfactant is, it is necessary to establish a kind of washing oil rate analysis method based on thickening type emulsion.
The content of the invention
It is an object of the invention to provide a kind of emulsification surfactants displacement of reservoir oil for being applied to more than 95 DEG C ultrahigh-temperature oil reservoirs, Surfactant being lived based on thickening type emulsion surface to the oily eluting power of oil-sand surface adhesion can more accurately be evaluated Property agent washing oil rate analysis method,
The purpose of the present invention is achieved through the following technical solutions:Washing oil rate analysis based on thickening type emulsification surfactants Method, being somebody's turn to do the washing oil rate analysis method based on thickening type emulsification surfactants includes:Step 1, aging oil-sand and surface are made Activator solution;Step 2, a certain amount of aging oil-sand and surfactant solution are weighed, determines that surfactant solution washes out Oil mass;Step 3, blank assay is done with distilled water, determines the oil mass that distilled water washes out;Step 4, weigh a certain amount of crude oil and Surfactant solution, it is determined that total oil mass;Step 5, oil mass, the oil mass of distilled water wash-off washed out according to surfactant solution The washing oil rate of surfactant is calculated with total oil mass.
The purpose of the present invention is also achieved through the following technical solutions:
Step 1 includes:
(a), take channel sand, target block scene injection water and crude oil sample standby;
(b) target block crude oil and channel sand uniformly, are mixed and made into oil-sand by a certain percentage, are put into glass sample bottle After closed, certain time is placed in insulating box, aging is carried out to oil-sand;
(c), surfactant is added to scene injection water according to a certain percentage, the obtained surfactant that stirs is molten Liquid.
In step (b), the mass ratio of crude oil and channel sand is 1:5~1:3, the temperature of insulating box is more than 70 DEG C, Standing time in insulating box is 7~14 days;In step (c), the content of surfactant is in surfactant solution (0.1~2.0) %.
Step 2 includes:A certain amount of aging oil-sand is weighed in outer grinding port conical flask, is connected with interior ground graded tube Afterwards, a certain amount of surfactant solution is added according to a certain percentage;After interior ground graded tube upper port sealing, in insulating box After placing certain time, the oil mass that surfactant solution washes out is read in interior ground graded tube.
In step 2, the mass ratio of the gross mass of aging oil-sand and surfactant solution and aging oil-sand is 50:1, always Carburetion chiltern amount is (2.0~3.0) g, and the quality of surfactant solution is
(98.0~147.0) g;The temperature of insulating box is more than 70 DEG C, standing time in insulating box for 48 hours with On.
Step 4 includes:A certain amount of crude oil is weighed in outer grinding port conical flask, after being connected with interior ground graded tube, is added Enter a certain amount of surfactant solution;After interior ground graded tube upper port sealing, after placing certain time in insulating box, Total oil mass is read in interior ground graded tube.
In step 4, the temperature of insulating box is more than 70 DEG C, and the standing time in insulating box is more than 48 hours.
In step 4, the crude quality weighed is the Theoretical Mass that contained crude oil in aging oil-sand is weighed in step 2, according to It is said that take the mass ratio of ageing oil chiltern amount and crude oil and channel sand to be calculated, the quality and step of the surfactant weighed It is identical in 2.
In steps of 5, the formula of the washing oil rate of gauging surface activating agent is:
In formula:η1--- surfactant washing oil rate, %;
V0--- total oil mass, mL contained by oil-sand;
V1--- distilled water washes out oil mass, mL;
V2--- surfactant solution washes out oil mass, mL.
In steps of 5, the ratio of distilled water washes out oil mass and total oil mass should be less than 5%.
The present invention based on thickening type emulsification surfactants washing oil rate analysis method, especially suitable for emulsion surface-active Evaluation of the surfactant to the washing oil ability of oil-sand in agent oil displacement system, it is quick to determine device using the washing oil rate of designed, designed Surfactant is evaluated in emulsification surfactants oil displacement system to the washing oil ability of oil-sand, for it is directly perceived, fast and accurately comment Valency emulsification surfactants are to the oily eluting power of oil-sand surface adhesion, and testing procedure is simple, cost is low, effect is good, for breast The screening and assessment of liquid displacing surfactant system provides technical support.
Brief description of the drawings
Fig. 1 is the stream of the specific embodiment based on thickening type emulsification surfactants washing oil rate analysis method of the present invention Cheng Tu;
Fig. 2 is that washing oil rate of the present invention determines schematic device.
Embodiment
For enable the present invention above and other objects, features and advantages become apparent, it is cited below particularly go out preferable implementation Example, and coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, Fig. 1 is that one based on thickening type emulsification surfactants washing oil rate analysis method of the invention is specific The flow chart of embodiment.
In step 101, aging oil-sand and surfactant solution are made.Concretely comprise the following steps:Take channel sand, target block existing Field injection water and crude oil sample are standby;Target block crude oil and channel sand are uniformly mixed and made into oil-sand by a certain percentage, are put into In glass sample bottle it is closed after, certain time is placed in insulating box, to oil-sand carry out aging, in one embodiment, crude oil with The mass ratio of channel sand is 1:5~1:3, the temperature of insulating box is more than 70 DEG C, and the standing time in insulating box is (7~14) My god;Surfactant is added to scene injection water according to a certain percentage, stir obtained surfactant solution, surface-active The content of surfactant is (0.1~2.0) % in agent solution.
In step 102, a certain amount of aging oil-sand and surfactant solution are weighed, determines that surfactant solution washes out Oil mass.In one embodiment, as shown in Fig. 2 determining schematic device, outer grinding port cone for the washing oil rate of designed, designed of the present invention The capacity of shape bottle 2 is 100mL, and the total capacity after being assembled with interior ground graded tube 1 is 160mL.Claim in outer grinding port conical flask 2 A certain amount of aging oil-sand is taken, after being connected with interior ground graded tube 1, adds a certain amount of surfactant according to a certain percentage The gross mass of solution, aging oil-sand and surfactant solution is 50 with the mass ratio of aging oil-sand:1, general ageing oil chiltern Measure as (2.0~3.0) g, the quality of surfactant solution is (98.0~147.0) g;The interior upper port of ground graded tube 1 sealing Afterwards, after placing certain time in insulating box, the oil mass that surfactant solution washes out is read in interior ground graded tube 1, it is permanent The temperature of incubator is more than 70 DEG C, and the standing time in insulating box is more than 48 hours.
In step 103, blank assay is done with distilled water, the oil mass that distilled water washes out is read in interior ground graded tube.
In step 104, a certain amount of crude oil and surfactant solution are weighed, it is determined that total oil mass.In one embodiment, exist A certain amount of crude oil is weighed in outer grinding port conical flask 2, after being connected with interior ground graded tube, adds a certain amount of surfactant Solution, crude quality are the Theoretical Mass that contained crude oil in aging oil-sand is weighed in step 102, and foundation weighs ageing oil chiltern amount It is calculated with the mass ratio of crude oil and channel sand, the quality for adding surfactant is identical with step 102;Interior ground scale After the sealing of the upper port of pipe 1, after placing certain time in insulating box, total oil mass is read in interior ground graded tube 1, insulating box Temperature is more than 70 DEG C, and the standing time in insulating box is more than 48 hours.
The oil mass washed out in step 105, the oil mass washed out according to surfactant solution, distilled water and total oil mass computational chart The washing oil rate of face activating agent, washing oil rate is calculated by formula (1).
In formula:η1--- surfactant washing oil rate, %;
V0--- total oil mass, mL contained by oil-sand;
V1--- distilled water washes out oil mass, mL;
V2--- surfactant solution washes out oil mass, mL.
In one embodiment, the ratio of distilled water washes out oil mass and total oil mass should be less than 5%.
In the specific embodiment of the application present invention, include following steps:
(a) take channel sand, target block scene injection water and crude oil sample standby.
(b) target block crude oil and channel sand are uniformly mixed and made into oil-sand by a certain percentage, are put into glass sample bottle After closed, certain time is placed in insulating box, aging is carried out to oil-sand.The mass ratio of crude oil and channel sand is 1:4.Insulating box Temperature be 80 DEG C, the standing time in insulating box is (7~14) day.
(c) surfactant is added to scene injection water according to a certain percentage, stir obtained surfactant solution; The content of surfactant is 2.0% in surfactant solution.
(d) a certain amount of aging oil-sand is weighed in outer grinding port conical flask, after being connected with interior ground graded tube, according to one Certainty ratio adds a certain amount of surfactant solution;The gross mass of aging oil-sand and surfactant solution and aging oil-sand Mass ratio is 50:1, general ageing oil chiltern amount is (2.0~3.0) g, the quality of surfactant solution for (98.0~ 147.0)g。
(e) in after the sealing of ground graded tube upper port, after placing certain time in insulating box, in interior ground graded tube Read the oil mass that surfactant solution washes out;The temperature of insulating box is 80 DEG C, and the standing time in insulating box is 48 hours.
(f) blank assay is done with distilled water, the oil mass that distilled water washes out is read in interior ground graded tube.
(g) a certain amount of crude oil is weighed in outer grinding port conical flask, adds a certain amount of surfactant solution;Crude oil matter Measure to weigh in aging oil-sand contained theoretical crude quality in (d), that is, weigh multiplying for ageing oil chiltern amount and oil-sand mass ratio Product, the quality for adding surfactant are identical with (d).
(h) in after the sealing of ground graded tube upper port, after placing certain time in insulating box, in interior ground graded tube Read total oil mass;The temperature of insulating box is 80 DEG C, and the standing time in insulating box is 48 hours.
(i) oil mass, the oil mass of distilled water wash-off and the total oil mass washed out according to surfactant solution calculates surface-active The washing oil rate of agent, washing oil rate is calculated by formula (1).
In formula:η1--- surfactant washing oil rate, %;
V0--- total oil mass, mL contained by oil-sand;
V1--- distilled water washes out oil mass, mL;
V2--- surfactant solution washes out oil mass, mL.
The ratio of the oil mass that distilled water washes out and total oil mass should be less than 5%.The result such as following table institute measured by the above method Show:
The surfactant washing oil rate measurement result of table 1
The washing oil rate of 13-1 and 13-2 samples is higher, and preliminary screening 13-1 and 13-2 can be used as emulsification surfactants to drive The alternative activating agent of self-emulsifying surfactant in oil systems.
The present invention based on thickening type emulsification surfactants washing oil rate analysis method, can intuitively, fast and accurately comment For valency surfactant to the oily eluting power of oil-sand surface adhesion, this method does not need oil mass and the light splitting of petroleum ether extraction wash-off Photometer detects, and overcomes in conventional washing oil rate analysis method surfactant emulsifies performance interference extraction results and causes point Light photometer can not be detected accurately, evaluated suitable for the stronger surfactant properties of emulsifying capacity, be emulsification surfactants The screening and assessment of oil displacement system provides technical support, and further improving recovery ratio to more than 95 DEG C ultrahigh-temperature oil reservoirs has important meaning Justice.
It is described above, be only presently preferred embodiments of the present invention, any formal limitation not done to the present invention, it is every according to According to the technical spirit of the present invention, any simple modification made to above example, equivalent variations, the protection of the present invention is each fallen within Within the scope of.

Claims (10)

1. the washing oil rate analysis method based on thickening type emulsification surfactants, it is characterised in that thickening type emulsion table should be based on The washing oil rate analysis method of face activating agent includes:
Step 1, aging oil-sand and surfactant solution are made;
Step 2, a certain amount of aging oil-sand and surfactant solution are weighed, determines the oil mass that surfactant solution washes out;
Step 3, blank assay is done with distilled water, determines the oil mass that distilled water washes out;
Step 4, a certain amount of crude oil and surfactant solution are weighed, it is determined that total oil mass;
Step 5, oil mass, the oil mass of distilled water wash-off and the total oil mass washed out according to surfactant solution calculates surfactant Washing oil rate.
2. the washing oil rate analysis method according to claim 1 based on thickening type emulsification surfactants, it is characterised in that Step 1 includes:
(a), take channel sand, target block scene injection water and crude oil sample standby;
(b) target block crude oil and channel sand uniformly, are mixed and made into oil-sand by a certain percentage, are put into closed in glass sample bottle Afterwards, certain time is placed in insulating box, aging is carried out to oil-sand;
(c), surfactant is added to scene injection water according to a certain percentage, stir obtained surfactant solution.
3. the washing oil rate analysis method according to claim 2 based on thickening type emulsification surfactants, it is characterised in that In step (b), the mass ratio of crude oil and channel sand is 1:5~1:3, the temperature of insulating box is more than 70 DEG C, in insulating box Standing time be 7~14 days;In step (c), in surfactant solution the content of surfactant for (0.1~ 2.0) %.
4. the washing oil rate analysis method according to claim 1 based on thickening type emulsification surfactants, it is characterised in that Step 2 includes:A certain amount of aging oil-sand is weighed in outer grinding port conical flask, after being connected with interior ground graded tube, according to one Certainty ratio adds a certain amount of surfactant solution;After interior ground graded tube upper port sealing, placed in insulating box certain After time, the oil mass that surfactant solution washes out is read in interior ground graded tube.
5. the washing oil rate analysis method according to claim 4 based on thickening type emulsification surfactants, it is characterised in that In step 2, the mass ratio of the gross mass of aging oil-sand and surfactant solution and aging oil-sand is 50:1, ageing oil chiltern Measure as (2.0~3.0) g, the quality of surfactant solution is (98.0~147.0) g;The temperature of insulating box is more than 70 DEG C, Standing time in insulating box is more than 48 hours.
6. the washing oil rate analysis method according to claim 1 based on thickening type emulsification surfactants, it is characterised in that Step 4 includes:A certain amount of crude oil is weighed in outer grinding port conical flask, after being connected with interior ground graded tube, is added a certain amount of Surfactant solution;After interior ground graded tube upper port sealing, after placing certain time in insulating box, carved in interior ground Total oil mass is read in degree pipe.
7. the washing oil rate analysis method according to claim 6 based on thickening type emulsification surfactants, it is characterised in that In step 4, the temperature of insulating box is more than 70 DEG C, and the standing time in insulating box is more than 48 hours.
8. the washing oil rate analysis method according to claim 1 based on thickening type emulsification surfactants, it is characterised in that In step 4, the crude quality weighed is the Theoretical Mass that contained crude oil in aging oil-sand is weighed in step 2, old according to weighing The mass ratio of carburetion chiltern amount and crude oil and channel sand is calculated, and the quality of the surfactant weighed is identical with step 2.
9. the washing oil rate analysis method according to claim 1 based on thickening type emulsification surfactants, it is characterised in that In steps of 5, the formula of the washing oil rate of gauging surface activating agent is:
<mrow> <msub> <mi>&amp;eta;</mi> <mn>1</mn> </msub> <mo>=</mo> <mfrac> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>2</mn> </msub> <mo>-</mo> <msub> <mi>V</mi> <mn>1</mn> </msub> <mo>)</mo> </mrow> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>&amp;times;</mo> <mn>100</mn> <mi>%</mi> <mn>...</mn> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>
In formula:η1--- surfactant washing oil rate, %;
V0--- total oil mass, mL contained by oil-sand;
V1--- distilled water washes out oil mass, mL;
V2--- surfactant solution washes out oil mass, mL.
10. the washing oil rate analysis method according to claim 1 based on thickening type emulsification surfactants, its feature exist In in steps of 5, the ratio of the oil mass that distilled water washes out and total oil mass should be less than 5%.
CN201610619228.8A 2016-07-29 2016-07-29 Based on thickening type emulsification surfactants washing oil rate analysis method Pending CN107664675A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109289695A (en) * 2018-09-26 2019-02-01 天津亿利科能源科技发展股份有限公司 A kind of carboxylic acid surfactant and its preparation method and application
CN112129670A (en) * 2020-09-03 2020-12-25 中海油田服务股份有限公司 Evaluation method for oil washing rate of crude oil washing agent

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103528862A (en) * 2013-09-27 2014-01-22 中国石油天然气股份有限公司 Method for quickly evaluating oil washing effect of oil displacement agent indoors
CN104155410A (en) * 2014-07-04 2014-11-19 中国石油天然气股份有限公司 Displacement efficiency testing device
CN104297280A (en) * 2014-10-15 2015-01-21 中国石油集团西部钻探工程有限公司 Method for quantitatively evaluating oil washing effect of rock core by using nuclear magnetic resonance (NMR) technology
CN105403557A (en) * 2015-10-23 2016-03-16 中国石油化工股份有限公司 Screening method of composite microbial oil displacement agent for oil extraction
CN105651651A (en) * 2015-12-25 2016-06-08 中国石油天然气股份有限公司 Method for screening surfactant in polymer/surfactant binary displacement of reservoir oil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103528862A (en) * 2013-09-27 2014-01-22 中国石油天然气股份有限公司 Method for quickly evaluating oil washing effect of oil displacement agent indoors
CN104155410A (en) * 2014-07-04 2014-11-19 中国石油天然气股份有限公司 Displacement efficiency testing device
CN104297280A (en) * 2014-10-15 2015-01-21 中国石油集团西部钻探工程有限公司 Method for quantitatively evaluating oil washing effect of rock core by using nuclear magnetic resonance (NMR) technology
CN105403557A (en) * 2015-10-23 2016-03-16 中国石油化工股份有限公司 Screening method of composite microbial oil displacement agent for oil extraction
CN105651651A (en) * 2015-12-25 2016-06-08 中国石油天然气股份有限公司 Method for screening surfactant in polymer/surfactant binary displacement of reservoir oil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109289695A (en) * 2018-09-26 2019-02-01 天津亿利科能源科技发展股份有限公司 A kind of carboxylic acid surfactant and its preparation method and application
CN112129670A (en) * 2020-09-03 2020-12-25 中海油田服务股份有限公司 Evaluation method for oil washing rate of crude oil washing agent

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Application publication date: 20180206