Unlock instant, AI-driven research and patent intelligence for your innovation.
Intelligent encapsulation acid and use method
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An intelligent package and intelligent technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of uncontrollable acidification effect, limited effective distance of acid pressure, etc. Strong directional effect
Active Publication Date: 2021-03-12
四川省帕提科斯能源科技有限公司
View PDF11 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the acid liquid system reacts too quickly in the formation in the acidification, acid fracturing, plugging removal and other oil and gas stimulation processes of the current oil and gas reservoirs. , leading to problems such as limited effective distance of acid fracturing and uncontrollable acidification effect, a new type of intelligent encapsulated acid is provided, which encapsulates the liquid acid and releases the acid liquid after the encapsulated acid reaches the target reservoir position, realizing Controllable acid reaction, increasing the effective distance of acid
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] figure 1 is a schematic diagram of the microstructure of the encapsulated acid. It can be seen that the encapsulated acid of the present invention has a core-shell structure, the core of which is a conventional acid solution, and a shell layer is wrapped on the surface of the conventional acid solution. The conversion of acid solution from liquid continuous phase to solid dispersed phase is realized.
Embodiment 2
[0027] A preparation method of hydrophobic fluoropolymer:
[0028] (1) take by weighing 8g styrene and 12g N-allyl trifluoroacetamide, join in the reaction vessel;
[0029] (2) in reaction vessel, add 40g toluene, stir;
[0030] (3) Pour N into the liquid surface 2 Deoxygenation for 20min;
[0032] (5) The mixed solution was reacted at 60°C for 12h, the toluene was distilled off under reduced pressure while hot, and cooled to room temperature;
[0033] (6) pulverizing, ball-milling, and sieving the obtained copolymer, and selecting the powder of 10-500 nm, which is styrene-N-allyl trifluoroacetamide copolymer, and the molecular structural formula is as follows:
[0034]
[0035] The wettability is the key to determining whether the hydrophobic particles can successfully encapsulate the liquid acid solution. Therefore, the wettability of the fluoropolymer powder prepared in t...
Embodiment 3
[0042] A preparation method of hydrophobic fluoropolymer:
[0043] (1) take by weighing 10g benzyl methacrylate and 10g N-allyl trifluoroacetamide, join in the reaction vessel;
[0044] (2) in reaction vessel, add 10g xylene, stir;
[0045] (3) Pour N into the liquid surface 2 Deoxygenation for 20min;
[0047] (5) react the mixed solution at 100°C for 4h, distill off the toluene under reduced pressure while hot, and cool to room temperature;
[0048] (6) the obtained copolymer is pulverized, ball-milled, sieved, and the polymer powder of 10-500 nm is selected, and the molecular structure formula is as follows:
[0049]
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention discloses an intelligent encapsulation acid and a use method thereof, wherein the encapsulation acid is composed of a core material and a shell material wrapping the core material, and the core material is a liquid acid; the liquid acid is an acidic liquid used in the oilfield exploitation process; the shell layer material is hydrophobic nanoparticles with the size of 10-500 nm, andthe nanoparticles are one or a combination of at least two of fumed silica, polystyrene, poly(benzyl methacrylate) and a fluorine-containing polymer. The encapsulation acid is used in an oil and gas production increasing process including acidification, acid fracturing and plug removal of an oil and gas reservoir, and when the encapsulation acid is used, after the encapsulation acid is carried toa target position of a stratum by adopting a carrying fluid, the encapsulation acid releases liquid acid to react with the stratum after encountering a release agent. In the invention, the liquid acidis converted into powder, so that corrosion to a container and a pipeline during acidification construction is avoided, the liquid acid is released after the powder acid reaches a target stratum; when the liquid acid reacts with the stratum, the effective acidification distance can be greatly increased.
Description
technical field [0001] The invention relates to the technical field of oil and gas stimulation and transformation, in particular to an intelligent encapsulated acid for improving acidification effect in the fields of acidification and acid fracturing and a method for using the same. Background technique [0002] In recent years, with the bottleneck of conventional oil and gas exploration and development and the rapid development of science and technology, unconventional oil and gas resources have gradually become a new growth replacement point for oil and gas resources. Globally, carbonate reservoirs are widely distributed and have great reserves potential. However, due to the strong heterogeneity of carbonate reservoirs, complex geological conditions, and low productivity. Under normal circumstances, it is necessary to stimulate the reservoir to achieve the purpose of understanding the reservoir and increasing the reserve and production, and the more mature acidification a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More