CN106047327A - Environment-friendly oil-based annular protection fluid for oil and gas wells - Google Patents
Environment-friendly oil-based annular protection fluid for oil and gas wells Download PDFInfo
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- CN106047327A CN106047327A CN201610505682.0A CN201610505682A CN106047327A CN 106047327 A CN106047327 A CN 106047327A CN 201610505682 A CN201610505682 A CN 201610505682A CN 106047327 A CN106047327 A CN 106047327A
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- oil
- environment
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- gas well
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
Abstract
The invention relates to environment-friendly oil-based annular protection fluid for oil and gas wells and a preparation method of the annular protection fluid, belonging to oil field chemistry. The annular protection fluid takes a solution of salt of organic acid as a density modifier, organic amine as an inhibitor, a quaternary ammonium salt type cationic surfactant as a bacteriostatic agent and isoascorbic acid as a deoxidizer, and a surfactant is added, so that all the added agents are better dissolved in biodiesel; and according to the annular sulfur-bearing condition of an oil jacket, methyldiethanolamine or triethanolamine can be added as a desulphurizing agent, the requirements for annular protection fluid under different conditions and different well conditions can be met, and the annular protection fluid has low formation damage rate, no pollution and simple preparation.
Description
Technical field
The present invention relates to a kind of environment-friendly oil-based Oil/gas Well annular protective liquid, belong to technical field of oilfield chemistry, especially oil
During gas well liquid loading, oil casing annular space is carried out the completion fluid system of corrosion protection.
Background technology
In order to overcome the tubing (including tubing and casing) of down-hole at H2S、CO2, the Korrosionsmedium such as water by corrosion failure, from
And shorten the service life of pipe tubing greatly, and the problem adding oil-gas mining cost, need to add in tubing and casing annular space
Enter to slow down the annular protective liquid of tubing corrosion.And annular protective liquid can be divided into water base annular space to protect by the character of its continuous phase
Liquid and oil base annulus protection fluid.Water base annular protective liquid, because possessing simple, convenient, the advantage of low cost of constructing, is made widely
With, but because system self has some limitations so that etching problem yet suffers from.Although oil base annulus protection fluid right and wrong
Corrosive, and the water base Heat stability is good of ratio, because of problems such as cost are high and environmental pollution is serious, it is difficult to wide popularization and application.
Summary of the invention
In order to solve the problem of oil base drilling fluid environmental pollution and reduce the cost of manufacture of annular protective liquid, therefore study
Go out a kind of environment-friendly oil-based oil gas well protection liquid.This manufacture method is simple, safe efficient, pollution-free.This annular protective liquid simultaneously
With formation fluid, there is good compatibility, little to environmental injury.
The purpose of the present invention is realized by following technical proposal:
A kind of environment-friendly type Oil/gas Well oil base annulus protection fluid, by density adjuster, corrosion inhibiter, antibacterial, oxygen scavenger, sulphur removal
Agent and biodiesel composition, by percentage to the quality, form as follows:
Density adjuster: 0～30%；Corrosion inhibiter 3.0～5.0%；Antibacterial: 0.5～1.5%；Oxygen scavenger: 3.0～
6.0%；Sulfur elimination: 1～3%；Biodiesel: surplus.
Described density adjuster is organic formic acid salt, and Auto-regulating System of Density of Heavy Medium scope is 1.00～1.30g/m3。
Described corrosion inhibiter is that organic amine and aldehydes are compounding to be formed.
Described organic amine corrosion inhibiter is aniline.
Described lipid corrosion inhibiter is cinnamic aldehyde.
Described oxygen scavenger is arabo-ascorbic acid.
Described sulfur elimination is methyl diethanolamine or triethanolamine.
Described base oil is biodiesel.
The invention have the characteristics that the raw material selecting environmental protection, the annular protective liquid of preparation possesses higher temperature tolerance (
High-temperature resistant is up to more than 120 DEG C, under the high temperature conditions, and corrosion rate ＜ 0.030mm/a, sterilizing rate ＞ 90%, it is possible to opposing
15%H2S and 15%CO2), big (density range is 1.0～1.3g/cm to density range3, high density is up to 1.3g/cm3, it is possible to
Balance annulus pressure), preferable stability, advantage without layering and precipitating phenomenon, and in effectively prevent well environment to tubing
The corrosion failure caused, it is provided that continue protective capacities, improves the service life of tubing greatly, reduces oil-gas mining cost.Oil
Using biodiesel mutually, arene content is low, and the harm to human body and environment reduces, and effectively alleviates and alleviates environmental pollution and asks
Topic.The component raw material wide material sources of the present invention, low price, preparing process is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the case study on implementation design sketch of the present invention
Detailed description of the invention
Case study on implementation 1
The present invention is made up of following raw materials according: methyl diethanolamine or triethanolamine 1%, surfactant 3%, organic acid
Salt 10%, organic amine corrosion inhibiter 3%, arabo-ascorbic acid 3%, remaining be biodiesel.
The preparation method is that:
(1) in beaker, surfactant 1% is added；
And add methyl diethanolamine or triethanolamine 1% (2)；
(3) organic amine corrosion inhibiter 3%, arabo-ascorbic acid 3%, acylate 10% it are sequentially added into；
(4) add biodiesel, stir, obtain product.
Case study on implementation 2
The present invention is made up of following raw materials according: methyl diethanolamine or triethanolamine 2%, surfactant 4%, organic acid
Salt 20%, organic amine corrosion inhibiter 4%, arabo-ascorbic acid 4%, remaining be biodiesel.
The preparation method is that:
(1) in beaker, surfactant 4% is added；
And add methyl diethanolamine or triethanolamine 2% (2)；
(3) organic amine corrosion inhibiter 4%, arabo-ascorbic acid 4%, acylate 20% it are sequentially added into；
(4) add biodiesel, stir, obtain product.
Case study on implementation 3
The present invention is made up of following raw materials according: methyl diethanolamine or triethanolamine 3%, surfactant 5%, organic acid
Salt 30%, organic amine corrosion inhibiter 5%, arabo-ascorbic acid 6%, remaining be biodiesel.
The preparation method is that:
(1) in beaker, surfactant 5% is added；
And add methyl diethanolamine or triethanolamine 3% (2)；
(3) organic amine corrosion inhibiter 5%, arabo-ascorbic acid 6%, acylate 30% it are sequentially added into；
(4) add biodiesel, stir, obtain product.
Testing TP110 and TP110S metal steel disc with prepared product, corrosivity is little, each component compatibility in solution
Property good, the product of gained i.e. can reach to reduce tubing corrosion, and raw material is environmental protection simultaneously, significantly reduces ring
The pollution in border.
Claims (8)
1. the manufacture method of an environment-friendly oil-based Oil/gas Well annular protective liquid, it is characterised in that its formula is by mass percentage
Including following component: density adjuster: 0～30%；Corrosion inhibiter 3.0～5.0%；Antibacterial: 0.5～1.5%；Oxygen scavenger: 3.0
～6.0%；Sulfur elimination: 1～3%；Biodiesel: 58.5%～92.5%.
The manufacture method of a kind of environment-friendly oil-based Oil/gas Well annular protective liquid the most according to claim 1, it is characterised in that
Described density adjuster is organic formic acid salt, and Auto-regulating System of Density of Heavy Medium scope is 1.00～1.30g/m3。
The manufacture method of a kind of environment-friendly oil-based Oil/gas Well annular protective liquid the most according to claim 1, it is characterised in that
Described corrosion inhibiter is that organic amine and aldehydes are compounding to be formed.
The manufacture method of a kind of environment-friendly oil-based Oil/gas Well annular protective liquid the most according to claim 1, it is characterised in that
Described organic amine corrosion inhibiter is aniline.
The manufacture method of a kind of environment-friendly oil-based Oil/gas Well annular protective liquid the most according to claim 1, it is characterised in that
The described cinnamic aldehyde that lipid corrosion inhibiter is environment-friendly type.
The manufacture method of a kind of environment-friendly oil-based Oil/gas Well annular protective liquid the most according to claim 1, it is characterised in that
Described oxygen scavenger is arabo-ascorbic acid.
The manufacture method of a kind of environment-friendly oil-based Oil/gas Well annular protective liquid the most according to claim 1, it is characterised in that
Described sulfur elimination is energy-conservation methyl diethanolamine or triethanolamine.
The manufacture method of a kind of environment-friendly oil-based Oil/gas Well annular protective liquid the most according to claim 1, it is characterised in that
Described base oil is environment-friendly type biodiesel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610505682.0A CN106047327A (en) | 2016-06-29 | 2016-06-29 | Environment-friendly oil-based annular protection fluid for oil and gas wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610505682.0A CN106047327A (en) | 2016-06-29 | 2016-06-29 | Environment-friendly oil-based annular protection fluid for oil and gas wells |
Publications (1)
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|---|---|
| CN106047327A true CN106047327A (en) | 2016-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610505682.0A Pending CN106047327A (en) | 2016-06-29 | 2016-06-29 | Environment-friendly oil-based annular protection fluid for oil and gas wells |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107603579A (en) * | 2017-10-17 | 2018-01-19 | 西南石油大学 | One kind is applied to CO2Inexpensive oil base annulus protection fluid of drive injection well and preparation method thereof |
| CN108300444A (en) * | 2018-02-09 | 2018-07-20 | 塔里木大学 | It is a kind of to recover the oil with oil jacket annular protective liquid and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102816560A (en) * | 2012-09-06 | 2012-12-12 | 中国石油化工股份有限公司 | High-temperature annular protection fluid and preparation method thereof |
| CN102977871A (en) * | 2012-11-27 | 2013-03-20 | 唐山市金沙工贸有限公司 | Annulus protection fluid |
| CN105238378A (en) * | 2015-09-08 | 2016-01-13 | 中国石油化工股份有限公司 | High-acidity gas well oil-based annulus protection fluid |
-
2016
- 2016-06-29 CN CN201610505682.0A patent/CN106047327A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102816560A (en) * | 2012-09-06 | 2012-12-12 | 中国石油化工股份有限公司 | High-temperature annular protection fluid and preparation method thereof |
| CN102977871A (en) * | 2012-11-27 | 2013-03-20 | 唐山市金沙工贸有限公司 | Annulus protection fluid |
| CN105238378A (en) * | 2015-09-08 | 2016-01-13 | 中国石油化工股份有限公司 | High-acidity gas well oil-based annulus protection fluid |
Non-Patent Citations (1)
| Title |
|---|
| 刘清云，等: "油水井环空保护技术研究进展", 《河南化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107603579A (en) * | 2017-10-17 | 2018-01-19 | 西南石油大学 | One kind is applied to CO2Inexpensive oil base annulus protection fluid of drive injection well and preparation method thereof |
| CN108300444A (en) * | 2018-02-09 | 2018-07-20 | 塔里木大学 | It is a kind of to recover the oil with oil jacket annular protective liquid and preparation method thereof |
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| C06 | Publication | ||
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Application publication date: 20161026 |
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| RJ01 | Rejection of invention patent application after publication |