Unlock instant, AI-driven research and patent intelligence for your innovation.
A kind of organosilicon water blocking agent and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of organosilicon and water blocking agent, applied in chemical instruments and methods, drilling composition and other directions, can solve the problems of reduced formation energy, reduced oil recovery rate, increased investment cost, etc.
Inactive Publication Date: 2016-06-29
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
View PDF3 Cites 0 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
The increase of liquid production directly leads to the reduction of formation energy, the reduction of pumping efficiency of pumping wells, the aggravation of pipeline and equipment corrosion and scaling, the increase of water treatment cost, and the increase of investment costs, which directly affect the production of crude oil and lead to the reduction of ultimate recovery of oil layers. , so water plugging and profile control is imperative
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
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0026] The preparation method of above-mentioned organosilicon water blocking agent, comprises the following steps:
[0027] (1), prepare slow-release acid, slow-release acid is prepared by mixing the following mass components: ammoniumchloride (NH4Cl) 3.8%, formaldehyde (HCHO) 8.1%, phosphoric acid 2.5%, water 85.6%.
[0028] (2), measuring raw materials
[0029] The volume components of sodium silanolate, organosilicon, and slow-release acid are as follows: sodium silanolate 35-36, organosilicon 5-6, and slow-release acid 58-60;
[0030] The dosage of ethylenediaminetetraacetic acid (EDTA) is 1g / 10ml slow-release acid.
[0031] (3) Mix the measured sodium silanolate and organosilicon, add the weighed ethylenediaminetetraacetic acid and stir thoroughly; add slow-release acid and mix thoroughly to prepare the organosilicon water blocking agent.
[0032] Mix the silicone water shutoff agent with oilfield sewage at a volume ratio of 1:3.5-4, inject it into the well, and hydro...
Embodiment 1
[0034] Organosilicon water blocking agent is formulated with sodium silanolate and organosilicon as the main agent, ethylenediaminetetraacetic acid (EDTA) as an auxiliary agent, and mixed with an appropriate amount of slow-release acid; The volume components are as follows: sodium silanolate 9ml, organosilicon 1.5ml, slow-release acid 15ml; the amount of ethylenediaminetetraacetic acid (EDTA) is 0.15g; wherein: the modulus of sodium silanolate is 3.0; the solid content of organosilicon The slow-release acid is prepared by mixing the following quality components: ammoniumchloride (NH4Cl) 3.8%, formaldehyde (HCHO) 8.1%, phosphoric acid 2.5%, water 85.6%.
[0035] The preparation method of organosilicon water blocking agent comprises the following steps:
[0036] (1), prepare slow-release acid, slow-release acid is formulated by mixing the following mass components: 38gNH 4 Cl (3.8%), 81g HCHO (8.1%), 25g phosphoric acid (2.5%), 856g (85.6%) water.
[0037] (2) Measure 9ml of ...
Embodiment 2
[0042] The difference from Example 1 is that the volume components of sodium silanolate, organosilicon, and slow-release acid are as follows: 7.5 ml of sodium silanolate, 1.4 ml of organosilicon, and 15 ml of slow-release acid.
[0043] Heat the prepared mixture in a water bath at 60°C. After 8 hours, the solution gels, and the gel strength is good. When the gel is poured, only a small meniscus is formed and becomes quite rigid. .
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
Property
Measurement
Unit
modulus
aaaaa
aaaaa
Login to View More
Abstract
The invention belongs to the field of oilfield chemistry, and in particular relates to an organosilicon water blocking agent and a preparation method thereof; it is used for thermal recovery wells and horizontal wells. Organosilicon water blocking agent is formulated with sodium silanolate and organosilicon as the main agent, ethylenediaminetetraacetic acid as an auxiliary agent, and mixed with an appropriate amount of slow-release acid; the volume components of sodium silanolate, organosilicon, and slow-release acid As follows: sodium silanolate 25-36, organosilicon 5-6, slow-release acid 58-68, the dosage of ethylenediaminetetraacetic acid is 1g / 10ml slow-release acid. The preparation method of the organosilicon water blocking agent comprises the following steps: (1), preparing slow-release acid; (2), measuring raw materials; (3), mixing the measured sodium silanolate and organosilicon, and Add the weighed ethylenediaminetetraacetic acid and stir well; add the slow-release acid and mix well to prepare the silicone water blocking agent. The silicone water shutoff agent of the present invention has a water shutoff rate of >90%, can withstand a high temperature of 150°C, has a water shutoff validity period of >90 days, and has hydrolysis and solidification properties.
Description
technical field [0001] The invention belongs to the field of oil fieldchemistry, and in particular relates to an organosilicon water shutoff agent and a preparation method thereof; Hirai. Background technique [0002] At present, most domestic oil fields have entered the development stage of high water cut or extremely high water cut: liquid production increases, oil production decreases, and water cut exceeds 80%, even as high as 90%. The increase of liquid production directly leads to the reduction of formation energy, the reduction of pumping efficiency of pumping wells, the aggravation of pipeline and equipment corrosion and scaling, the increase of water treatment cost, and the increase of investment costs, which directly affect the production of crude oil and lead to the reduction of ultimate recovery of oil layers. , so water plugging and profile control is imperative. [0003] After years of development, the water shutoff and profile control technologies used in o...
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