CN103694978B - Organic chrome cross linker and the preparation method of organic chromium gel profile-controlling system - Google Patents
Organic chrome cross linker and the preparation method of organic chromium gel profile-controlling system Download PDFInfo
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- CN103694978B CN103694978B CN201310688950.3A CN201310688950A CN103694978B CN 103694978 B CN103694978 B CN 103694978B CN 201310688950 A CN201310688950 A CN 201310688950A CN 103694978 B CN103694978 B CN 103694978B
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
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Abstract
The invention discloses a kind of organic chrome cross linker and the preparation method of organic chromium gel profile-controlling system.The preparation method of described organic chromium gel profile-controlling system, comprises the following steps: add 2 parts of glacial acetic acid in 7 parts of water；Then, 1 part of potassium dichromate is added while stirring；Finally, being slowly added to 4 parts of sodium thiosulfate while stirring, the solution formed is organic chrome cross linker.The preparation method of described organic chromium gel profile-controlling system, comprises the following steps: in container, and configuration concentration is the sodium chloride solution of 0.5%；Then, being uniformly added into polyacrylamide, wherein, polyacrylamide is 3:5 with the mass ratio of sodium chloride；Then, adding organic chrome cross linker, the concentration of organic chrome cross linker is 0.3%.Organic chromium profile control system stable performance disclosed in this invention, preventive effect of expansion is good, little to oil layer pollution, it is low to corrode, heat-resisting property good and onsite application is convenient.
Description
Technical field
The present invention relates to a kind of organic chrome cross linker and the preparation method of organic chromium gel profile-controlling system.
Background technology
Water plugging and profile controlling and relevant supporting technology occupy weight in high water cut oil field control water stable yields (volume increase) measure
Want status, but along with the complexity day by day of high water-cut reservoir water drive problem, require more to come to this art
The highest, promote constantly bringing forth new ideas and develop, the most in recent years in deep of water plugging and profile controlling and correlation technique
The research of profile control (transfer drive) fluid diverting agent and application aspect achieve many new developments, are formed and include weak coagulating
Glue, colloidal dispersed gel (CDG), volume expansion grain, flexible particle etc. overlap deep profile controlling (transfer drive) technology more,
Play an important role for China's high water cut oil field improving ecology development effectiveness, raising recovery ratio.But,
Existing profile control formula system plastic is weak, and effect duration is short, complex process, designs not reasonable, and
Existing heavy dose of deep profile controlling system adds reagent cost largely, makes profit reduce；Additionally
Current a lot of profile control system profile control effect persistent period are shorter, are extremely difficult to more than 1 year.
Accordingly, it would be desirable to invent a kind of novel profile control system.
Summary of the invention
Present invention is primarily targeted at, eliminate the harm to mud property of the profile control system further, and solve
Certainly degradation problem under drilling speed.
The object of the invention to solve the technical problems realizes by the following technical solutions.
According to the preparation method of a kind of organic chrome cross linker that the present invention proposes, comprise the following steps:
The first step: adding glacial acetic acid in water while stirring, wherein, water is 7 with the mass ratio of glacial acetic acid:
2；
Second step: in the solution of the first step, adds potassium dichromate, wherein, dichromic acid while stirring
Potassium is 1:2 with the mass ratio of glacial acetic acid；
3rd step: in the solution of second step, is slowly added to sodium thiosulfate while stirring, wherein,
The mass ratio of sodium thiosulfate and potassium dichromate is 4:1, formed solution be organic chromium crosslinking
Agent.
The invention also discloses the preparation method of a kind of organic chromium gel profile-controlling system, comprise the following steps:
The first step: in container, configuration concentration is the sodium chloride solution of 0.5%；
Second step: in the solution of the first step, is uniformly added into polyacrylamide while stirring, wherein,
Polyacrylamide is 3:5 with the mass ratio of sodium chloride；
3rd step: by the solution in second step, carries out 20～30 minutes being sufficiently stirred for；
4th step: in the solution of the 3rd step, is uniformly added into the organic chromium described in claim 1 and hands over
Connection agent, wherein, the concentration of organic chrome cross linker is 0.3%.
Preferably, the solution in the 4th step is carried out the low rate mixing of 10～15 minutes so that described in have
Solution in machine chromium cross linker and second step is sufficiently mixed.
Preferably, the solution in the 4th step being placed in 60 DEG C of water-baths plastic reaction, the time is
48～72 hours.
Preferably, in the first step, sodium chloride solution is carried out high-speed stirred, and forms whirlpool, so that
It fully dissolves.
Preferably, in second step, when high-speed stirred, slowly along the domatic addition polyacrylamide of whirlpool
Amine, after adding polyacrylamide, seals container, to avoid moisture loss in whipping process.
Preferably, in the 3rd step, first, carry out the high-speed stirred of 5 minutes, then, carry out 20～30
Minute moderate-speed mixer.
Preferably, in the 4th step, when adding organic chrome cross linker, need to be sufficiently stirred for, stirring
Time is 10～15 minutes.
Preferably, being fully stirred by the solution of preparation in the 4th step, job site can be noted
Enter stratum and carry out profile control.
By technique scheme, organic chromium gel profile-controlling system of the present invention at least has the advantage that
Organic chromium gel profile-controlling system gel-formation power disclosed in this invention is strong, and effect duration is long,
Technique is simple, greatly reduces cost.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the present invention's
Technological means, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention
After describing in detail such as.
Detailed description of the invention
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention,
Below in conjunction with preferred embodiment, to the organic chromium gel profile-controlling system proposed according to the present invention, and should
The preparation method of profile control system and using method, after describing in detail such as.
The preparation method embodiment of organic chrome cross linker
The preparation method of a kind of organic chrome cross linker, comprises the following steps:
The first step: adding glacial acetic acid in water while stirring, wherein, water is 7 with the mass ratio of glacial acetic acid:
2；
Second step: in the solution of the first step, adds potassium dichromate, wherein, dichromic acid while stirring
Potassium is 1:2 with the mass ratio of glacial acetic acid；
3rd step: in the solution of second step, is slowly added to sodium thiosulfate while stirring, wherein,
The mass ratio of sodium thiosulfate and potassium dichromate is 4:1, formed solution be organic chromium crosslinking
Agent.
The preparation method embodiment of organic chromium gel profile-controlling system
The preparation method of a kind of organic chromium gel profile-controlling system, comprises the following steps:
The first step: in container, configuration concentration is the sodium chloride solution of 0.5%, it is, according to chlorine
Changing the concentration of sodium 0.5%, the sodium chloride weighing certain mass is added to the water, and opens motor stirrer,
With higher rotation speed, above-mentioned solution stirring is gone out whirlpool, after sodium chloride is completely dissolved, carry out ensuing
Operation；
Second step: in the solution of the first step, is uniformly added into polyacrylamide while stirring, wherein,
Polyacrylamide is 3:5 with the mass ratio of sodium chloride, it is, according to the concentration of polymer 0.3%,
Weigh the polyacrylamide of certain mass, slowly along the domatic addition of whirlpool, be stirred with high rotating speed.
3rd step: by the solution in second step, carries out 30 minutes being sufficiently stirred for；
4th step: in the solution of the 3rd step, is uniformly added into the organic chromium described in claim 1 and hands over
Connection agent, wherein, the concentration of organic chrome cross linker is 0.3%；When being embodied as, weigh necessarily with balance
The above-mentioned polymer solution of quality, according to the concentration of cross-linking agent 0.3%, calculates and should add cross-linking agent
Quality, after being reset by the polymer solution on balance, instills cross-linking agent with glue head dropper.
May select, in the 3rd step, the solution in second step can be carried out 25～35 minutes arbitrarily
Being sufficiently stirred for of time；
Preferably, the solution in the 4th step is carried out the low rate mixing of 10～15 minutes so that described in have
Solution in machine chromium cross linker and second step is sufficiently mixed.
Preferably, the solution in the 4th step being placed in 60 DEG C of water-baths plastic reaction, the time is
48～72 hours, gel viscosity: (45～48) Pa s.
Preferably, in the first step, sodium chloride solution is carried out high-speed stirred, and forms whirlpool, so that
It fully dissolves.
Preferably, in second step, when high-speed stirred, slowly along the domatic addition polyacrylamide of whirlpool
Amine, after adding polyacrylamide, seals container, to avoid moisture loss in whipping process,
Cause concentration inaccurate.
Concrete, it is possible to use described container is sealed by preservative film.
Preferably, in the 3rd step, first, the high-speed stirred of 5 minutes, polyacrylamide solution are carried out
Having had obvious viscosity (showing as rod climbing phenomenon), the too fast stirring paddle of rotating speed can be molten to polyacrylamide
Liquid causes shear degradation, then, carries out the moderate-speed mixer of 20～30 minutes, rotates middling speed and is stirred
Reason be too low rotating speed be unfavorable for that polyacrylamide particle dissolves, now solution viscosity continue increase.
Then, agitator is removed from polyacrylamide solution.
In the present embodiment, high-speed stirred time, moderate-speed mixer time are only for gathering the poly-of bright product in Nanchang
Acrylamide, the most currently used polyacrylamide brand, when the polyacrylamide of other brands stirs
Between should judge according to its dissolution velocity.
Preferably, in the 4th step, the time 10 of standing～20 minutes.Incomplete aquation can be made to dissolve
The abundant aquation of polyacrylamide, stands certain time post-consumer polymer and dissolves more abundant.
Preferably, in the 4th step, when adding organic chrome cross linker, owing to polymer solution viscosity is relatively big,
Add minimal amount of cross-linking agent and be difficult in full-bodied polymer diffusion uniformly, need fully to stir
Mixing so that cross-linking agent is uniformly dispersed in a polymer solution, mixing time is 10～15 minutes.
Carry out, in sealed storage, this enforcement, pouring this solution into ground glass stoppered bottle by the solution of the 5th step
In, labelled, put into and water-bath is carried out observe, monitor.Regulation water-bath temperature, observes with having
The closing time of the gel of machine chromium cross linker configuration and heat stability.
The gel strength of described organic chromium gel profile-controlling system is adjustable, and gelation time is controlled, has the strongest
Saline-alkaline tolerance；Oil resistant, acid and alkali resistance are strong；And production and processing is convenient, low cost.
The solution of preparation in 4th step in use, is filled by described organic chromium gel profile-controlling system
Dividing and be stirred, job site can be injected stratum and carry out profile control.Effect of field application is the most ripe
The whole profile control formula of organic chromium profile control system see table:
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any form
On restriction, any simple modification above example made according to the technical spirit of the present invention, etc.
With change and modification, all still fall within the range of technical solution of the present invention.
Claims (9)
1. the preparation method of an organic chrome cross linker, it is characterised in that comprise the following steps:
The first step: adding glacial acetic acid in water while stirring, wherein, water is 7 with the mass ratio of glacial acetic acid:
2；
Second step: in the solution of the first step, adds potassium dichromate, wherein, dichromic acid while stirring
Potassium is 1:2 with the mass ratio of glacial acetic acid；
3rd step: in the solution of second step, is slowly added to sodium thiosulfate while stirring, wherein,
The mass ratio of sodium thiosulfate and potassium dichromate is 4:1, formed solution be organic chromium crosslinking
Agent.
2. the preparation method of an organic chromium gel profile-controlling system, it is characterised in that comprise the following steps:
The first step: in container, configuration concentration is the sodium chloride solution of 0.5%；
Second step: in the solution of the first step, is uniformly added into polyacrylamide while stirring, wherein,
Polyacrylamide is 3:5 with the mass ratio of sodium chloride；
3rd step: by the solution in second step, carries out 25～35 minutes being sufficiently stirred for；
4th step: in the solution of the 3rd step, is uniformly added into the organic chromium described in claim 1 and hands over
Connection agent, wherein, the concentration of organic chrome cross linker is 0.3%.
3. the preparation method of organic chromium gel profile-controlling system as described in claim 2, its feature exists
In,
Solution in 4th step is carried out the low rate mixing of 10～15 minutes, so that the crosslinking of described organic chromium
Solution in agent and second step is sufficiently mixed.
4. the preparation method of organic chromium gel profile-controlling system as described in claim 2, its feature exists
In,
Solution in 4th step is placed on plastic reaction in 60 DEG C of water-baths, and the time is 24～72 hours.
5. the preparation method of organic chromium gel profile-controlling system as described in claim 2, its feature exists
In,
In the first step, sodium chloride solution is carried out high-speed stirred, and forms whirlpool, so that it is the most molten
Solve.
6. the preparation method of organic chromium gel profile-controlling system as described in claim 2, its feature exists
In,
In second step, when high-speed stirred, slowly along the domatic addition polyacrylamide of whirlpool, adding
After entering polyacrylamide, container is sealed, to avoid moisture loss in whipping process.
7. the preparation method of organic chromium gel profile-controlling system as described in claim 2, its feature exists
In,
In 3rd step, first, carry out the high-speed stirred of 5 minutes, then, carry out 20～30 minutes
Moderate-speed mixer.
8. the preparation method of organic chromium gel profile-controlling system as described in claim 2, its feature exists
In,
In 4th step, when adding organic chrome cross linker, needing to be sufficiently stirred for, mixing time is 10～15
Minute.
9. the preparation method of the organic chromium gel profile-controlling system as according to any one of claim 2 to 8,
It is characterized in that,
Fully being stirred by the solution of preparation in 4th step, job site can be injected stratum and enter
Row profile control.
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| CN104212425B (en) * | 2014-09-01 | 2017-05-10 | 中国石油天然气股份有限公司 | Dual-water type emulsion profile control and water shutoff agent and preparation method thereof |
| CN106281271A (en) * | 2016-07-26 | 2017-01-04 | 中国石油天然气股份有限公司 | Polynary complexed organo-metallic cross-linking agent and preparation method thereof |
| CN110540271A (en) * | 2019-02-27 | 2019-12-06 | 湖北文理学院 | Preparation method of efficient industrial sewage treatment agent |
| CN112266773A (en) * | 2020-10-22 | 2021-01-26 | 中国石油大学(华东) | Fly ash/amphiphilic polymer composite gel profile control agent, preparation method and application |
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| US3493318A (en) * | 1964-10-05 | 1970-02-03 | Diamond Shamrock Corp | Tanning composition made from a basic chrome sulfate and a tris(hydroxyacetato)chromiate |
| US4636572A (en) * | 1985-03-11 | 1987-01-13 | Phillips Petroleum Company | Permeability contrast correction employing propionate-sequestered chromium(III) prepared by nitrite/dichromate redox |
| US4770245A (en) * | 1986-10-14 | 1988-09-13 | Marathon Oil Company | Rate-controlled polymer gelation process for oil recovery applications |
| FR2812640B1 (en) * | 2000-08-01 | 2003-03-14 | Couleurs Zinciques Soc Nouv | PROCESS FOR THE PREPARATION OF AN ORGANIC COMPLEX OF CHROMIUM III, ITS USE AS A CORROSION INHIBITOR AND ANTICORROSION COATING |
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