Silicon fluorine anti-falldown filter agent for drilling fluid

A technology of fluid loss reducer and drilling fluid, which is applied in drilling compositions, chemical instruments and methods, etc., can solve problems such as instability of well wall and damage to oil and gas layers, improve mechanical efficiency and drilling speed, reduce Static filtration, excellent filtration effect

Active Publication Date: 2006-06-28
宋福如
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AI Technical Summary

Problems solved by technology

Drilling fluid intrusion into the formation will cause shale hydration and expansion, which will lead to instability of the wellbore wall and various downhole complex situations in severe cases, and damage to oil and gas layers when drilling into oil-producing layers

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0007] The present invention comprises methyl trifluoropropyl chlorosilane, acrylonitrile (CN), vinyl acetate (VAc), bentonite, lignite, caustic soda and water, and the weight ratio of each component is: 100:30:45:20:320: 15:40.

[0008] The present invention is prepared according to the following steps:

[0009] (1) Raw material preparation, purchase high-quality raw materials according to the components, and do a good job of quality inspection.

[0010] (2) Trial production equipment, 1000-3000ml three-port glass reactor, separating funnel, 5L stainless steel reactor, high-speed mixer, electric heating mantle, dryer, vacuum pump and other auxiliary equipment.

[0011] (3) Preparation of methyl trifluoropropyl cyclosiloxane: methyl trifluoropropyl chlorosilane reacts proportionally with water in the reactor, controls the reaction temperature n ).

[0012] (4) Synthetic polymer: DF n , acrylonitrile (CN) and vinyl acetate (VAc) are used as raw materials, put into the reacto...

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PUM

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Abstract

The invention relates to drilling fluid using silicon fluorine anti-collapse filtration reducing agent. It includes the following steps: reacting methyl tri-fluorine propyl chloride silane with deionized water; expelling the chlorine hydride; moving the resultant into distiller to do vacuum distillation; extracting distilled part at 140-160 centigrade degree methyl tri-fluorine propyl chloride silane known as DFn; using DFn, propylene brighten, acetic acid ethylene as material to react in reactor; hydrolyzing by deionized water; filter pressing; pre-processing; and pneumatic conveying drying. It is new type high efficiency drilling fluid treating compound. And it increases clay xi electric potential and solid phase dispersilbility; it has multi and fine grain, good hydrating, thick salvation film. And the formed cake of press is thin, compact, tenacity, and low permeability.

Description

(1) Technical field [0001] The invention relates to a silicon-fluorine anti-slump fluid loss reducing agent for drilling fluid. (two), background technology [0002] During drilling, drilling fluid can leach off into the formation. Drilling fluid intrusion into the formation will cause shale hydration and expansion, which will lead to instability of the wellbore wall and various downhole complex situations in severe cases, and damage to oil and gas layers when drilling into oil-producing layers. In drilling engineering, the fluid loss performance of drilling fluid should be strictly controlled, and the use of appropriate drilling fluid treatment agent is an effective method to reduce fluid loss and establish good wall-building properties. (3) Contents of the invention: [0003] In order to overcome the shortcomings of the prior art, the present invention provides a silicon-fluorine anti-slump fluid loss agent for drilling fluid, which is a new type of high-efficiency dril...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03
Inventor 宋福如
Owner 宋福如
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