Auxiliary for improving the plugging performance of cyanide-based plugging agent and its preparation method, cyanogen-based plugging agent
A technology of plugging agent and auxiliary agent, applied in chemical instruments and methods, drilling composition and other directions, can solve the problems of poor plugging performance, short curing time, etc., to improve the plugging effect, delay time, improve The effect of compressive strength
Active Publication Date: 2018-04-03
PETROCHINA CO LTD
View PDF9 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Cyanide plugging agent reacts immediately when it meets water, and the curing time is short, resulting in poor plugging performance
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 moreExamples
Experimental program
Comparison scheme
Effect test
preparation example Construction
Embodiment 1
Embodiment 2
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 assistant for improving the leak stopping performance of a cyanogen coagulation leak stopping agent, a preparation method thereof, and the cyanogen coagulation leak stopping agent. The assistant comprises 5-8wt% of a first retarder, 2-4wt% of a second retarder, 1-3wt% of a foaming agent, 55-65wt% of a solvent, and the balance of water; the first retarder is benzenesulfonyl choride and / benzoyl chloride; and the second retarder is ethylene diamine tetramethylene phosphonic acid sodium. The assistant can effectively control the reaction speed of cyanogen coagulation and water and delay the cyanogen coagulation solidifying time through synergism and compounding effects of above proportions of all above components, improves the compressive strength of the solidified cyanogen coagulation leak stopping agent, and improves the leak stopping effect of the cyanogen coagulation leak stopping agent.
Description
Auxiliary for improving the plugging performance of cyanide-based plugging agent and its preparation method, cyanogen-based plugging agent technical field The invention relates to the field of oil field development plugging agents, in particular to an auxiliary agent for improving the plugging performance of cyanide-based plugging agents and a preparation method thereof, the cyanide-based plugging agent. Background technique In the process of oil well operation in fractured carbonate reservoirs in oilfields, due to the high construction pressure difference and the characteristics of the reservoir itself, it is easy to form fractures in the reservoir, causing a large amount of working fluid to leak along the fractures, damaging the reservoir, and then affecting the reservoir. Accurate evaluation and efficient development of layers. The above-mentioned leakage damage has many types, high degree, large scale and wide range, and it is difficult to restore the original producti...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/44
Inventor 闫海俊胡书宝谢刚巨登峰张双艳李善维李金炭任宝玉李胜华魏丽丽
Owner PETROCHINA CO LTD