A preparation method of temperature-sensitive flow pattern regulator for deepwater water-based drilling fluid

A flow regulator, deep-water water-based technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of poor temperature response, low-temperature viscosity increase, poor temperature resistance, etc., and achieve hydrophobic association Strong effect, improved high temperature resistance, strong hydrophobic association effect
CN112194755BActive Publication Date: 2021-07-23CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Publication Date
2021-07-23

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Abstract

The invention provides a method for preparing a temperature-sensitive flow pattern regulator for deepwater water-based drilling fluid, comprising the steps of: adding temperature-sensitive monomers, acrylic monomers, and amide monomers into deionized water, mixing evenly, Then adjust the pH of the system to 6.0-8.0 to obtain a mixed solution; add acrylate monomers, temperature-resistant monomers, and emulsifiers to the mixed solution, mix evenly, and then shear and emulsify to obtain a pre-emulsion; heat the obtained pre-emulsion To 55‑65°C, add the aqueous solution of the initiator drop by drop under the condition of stirring, and then add the aqueous solution of the crosslinking agent drop by drop to carry out the reaction; after filtering, washing, drying and pulverizing, it is obtained. The flow pattern regulator of the invention has good temperature response effect, can effectively adjust the low-temperature rheology of drilling fluid, meets the flow pattern regulation requirements in a large temperature span range, and has certain high temperature resistance.
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Description

technical field

[0001] The invention relates to a preparation method of a temperature-sensitive flow pattern regulator for deep-water water-based drilling fluid, belonging to the field of oilfield chemistry in the petroleum industry. Background technique

[0002] With the continuous increase of domestic demand for oil and gas resources, the smooth exploitation of oil and gas resources in deep ocean areas has become an important guarantee for the sustainable development of my country's oil industry. my country's South China Sea oil and gas geological reserves are extremely rich, with about 24 billion tons of oil resources and about 1.4×10 natural gas hydrate resources. 5 It is one of the world's four major marine oil and gas enrichment areas, 70% of which are stored in deep water areas. Therefore, the efficient drilling and exploitation of deepwater oil and gas resources is an important guarantee for the sustainable development of my country's petroleum industry.

[0003] H...

Claims

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