Efficient low-temperature gel breaker for polymer fracturing fluid 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 fracturing fluid and gel breaker, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., and can solve problems such as failure of gel breaker and reduction of peroxide gel breaking effect
Inactive Publication Date: 2021-05-04
CHENGDU LEARN PRACTICES TECH CO LTD +1
View PDF15 Cites 1 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
[0007] The invention provides a high-efficiency low-temperature gel breaker for polymer fracturing fluid and its preparation method to solve the problem that in th
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
[0032] A high-efficiency low-temperature gel breaker for polymer fracturing fluid, including agent A and agent B. Calculated in parts by weight, agent A contains the following components: 35 parts of gel breaker main agent, 3 parts of gel breaker main agent stabilizer, 60.7 1 part of mineral oil, 1 part of polyamide, 0.3 part of hydrogenated castor oil; Agent B contains the following components: 10 parts of gel breaking activator, 2 parts of activation stabilizer, 15 parts of gel breaking auxiliary agent, 5 parts of gel breaking retarder, 3 parts part emulsifier, 40 parts white oil and 25 parts water.
[0033] In this embodiment, the gel-breaking main agent is potassium monopersulfate, the gel-breaking main agent stabilizer is acetic acid and EDTA (ethylenediaminetetraacetic acid) with a mass ratio of 1:1, and the gel-breaking activator is zinc chloride. The stabilizer is sodium nitrilotriacetate, the gel breaker auxiliary agent is sodium hypophosphite, the gel break retarder ...
Embodiment 2
[0039]A high-efficiency low-temperature gel breaker for polymer fracturing fluid, including agent A and agent B. Calculated in parts by weight, agent A contains the following components: 45 parts of gel breaker main agent, 5 parts of gel breaker main agent stabilizer, 47.5 parts Parts of mineral oil, 2 parts of polyamide, 0.5 part of hydrogenated castor oil; agent B contains the following components: 5 parts of gel breaking activator, 1 part of activation stabilizer, 20 parts of gel breaking auxiliary agent, 10 parts of gel breaking retarder, 5 parts part emulsifier, 30 parts white oil and 29 parts water.
[0040] In this embodiment, the gel-breaking main agent is potassium monopersulfate, the gel-breaking main agent stabilizer is citric acid and EDTA with a mass ratio of 1:1, the gel-breaking activator is zinc chloride, and the activation stabilizer is double 1, Sodium 6-hexamethylenetriaminepentamethylene phosphonate, the gel breaker auxiliary agent is sodium hypophosphite, ...
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 relates to the technical field of gel breakers for fracturing fluids, and particularly discloses an efficient low-temperature gel breaker for a polymer fracturing fluid. The efficient low-temperature gel breaker comprises an agent A and an agent B. The agent A comprises 35-45 parts of a gel breaking main agent, 3-5 parts of a gel breaking main agent stabilizer, 45-65 parts of mineral oil, 1-2 parts of polyamide and 0.3-0.5 part of hydrogenated castor oil, and the gel breaking main agent is peroxide; the agent B comprises the following components in parts by weight: 5-10 parts of a gel breaking activator, 1-2 parts of an activation stabilizer, 15-20 parts of a gel breaking auxiliary agent, 5-10 parts of a gel breaking retarder, 3-5 parts of an emulsifier, 30-40 parts of white oil and 20-30 parts of water. Compared with a conventional gel breaker system, the low-temperature gel breaker has the advantages that the performance of gel breaking liquid is not reduced during construction, gel breaking is rapid and thorough after construction is completed, the low-temperature gel breaker has the dual functions of liquid construction performance protection and efficient gel breaking, and the problem of gel breaking at the low temperature of 0-50 DEG C is solved.
Description
technical field [0001] The invention relates to the technical field of gel breakers for fracturing fluids, in particular to a high-efficiency low-temperature gel breaker for polymer fracturing fluids and a preparation method thereof. Background technique [0002] The fracturing stimulation of low temperature oil and gas reservoirs has always been one of the important problems in the development of oil and gas fields. When the conventional water-based fracturing fluid gel breaker is used to break the fracturing fluid, due to the limitation of the formation temperature, it is difficult to break the gel after fracturing, and the viscosity of the hydration fluid is high, resulting in a low flowback rate of the liquid and damage to the formation. Severe, resulting in poor fracturing effect. However, when adopting the traditional technology, it is necessary to increase the amount of gel breaker, which not only increases the cost, but also tends to cause the fracturing fluid to br...
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