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Hydrolyzed polyacrylonitrile-compound ammonium salt for drilling fluid

A technology for hydrolyzing polyacrylonitrile and polyacrylonitrile ammonium salt, which is applied in the field of petroleum drilling aids

Active Publication Date: 2011-01-26
石家庄华莱鼎盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technologies do not give specific guidance on how to make oil drilling additives perform better

Method used

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  • Hydrolyzed polyacrylonitrile-compound ammonium salt for drilling fluid
  • Hydrolyzed polyacrylonitrile-compound ammonium salt for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: The drilling fluid is hydrolyzed polyacrylonitrile-composite ammonium salt, which is based on hydrolyzed polyacrylonitrile ammonium salt as the main polymer, potassium polyacrylate, zwitterionic polymer fluid loss reducer JT888, polyacrylamide, nanmu powder As an auxiliary polymer, sodium hexametaphosphate is a mixture of six components of a flow regulator, and the weight percentage range of each component is 40% of hydrolyzed polyacrylonitrile ammonium salt, 10% of potassium polyacrylate, zwitterionic polymer Fluid loss reducer JT8885%, polyacrylamide 16%, nanmu powder 25%, sodium hexametaphosphate 4%.

[0016] The specific preparation method of the present invention is to take 40 kg of hydrolyzed polyacrylonitrile ammonium salt, 10 kg of potassium polyacrylate, 5 kg of zwitterionic polymer fluid loss reducer JT8885, 16 kg of polyacrylamide, 25 kg of nanmu powder, and 4 kg of sodium hexametaphosphate. Kg, respectively put into a (conventional) mixer, mix eve...

Embodiment 2

[0017] Embodiment 2: Drilling fluid hydrolyzed polyacrylonitrile-compound ammonium salt, it is based on hydrolyzed polyacrylonitrile ammonium salt as the main polymer, potassium polyacrylate, zwitterionic polymer fluid loss reducer JT888, polyacrylamide, nanmu powder As auxiliary polymer, sodium hexametaphosphate is mixed with six components of flow regulator.

[0018] The weight percent of each component can be: hydrolyzed polyacrylonitrile ammonium salt 40%, potassium polyacrylate 12%, zwitterionic polymer fluid loss reducer JT8882%, polyacrylamide 17%, nanmu powder 25%, hexametaphosphoric acid Sodium 4%.

[0019] Wherein the weight percent of each component can be: hydrolyzed polyacrylonitrile ammonium salt 45%, potassium polyacrylate 10%, zwitterionic polymer fluid loss reducer JT8882%, polyacrylamide 15%, nanmu powder 27%, hexametaphosphoric acid Sodium 1%.

[0020] Wherein the weight percent of each component can be: hydrolyzed polyacrylonitrile ammonium salt 43%, pota...

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Abstract

The invention discloses a hydrolyzed polyacrylonitrile-compound ammonium salt, which is prepared by mixing the following six components in percentage by weight: 20 to 50 percent of hydrolyzed polyacrylonitrile ammonium salt as a main polymer; 10 to 20 percent of potassium polyacrylate, 1 to 5 percent of amphoteric ionic polymer fluid loss additive JT888, 10 to 30 percent of polyacrylamide and 20 to 40 percent of nanmu powder as auxiliary polymers; and 1 to 10 percent of sodium hexametahposphate as a flow pattern modifying agent. The hydrolyzed polyacrylonitrile-compound ammonium salt has the functions of resisting the temperature of 150 DEG C, resisting 15 percent of salts, reducing filtration lost water, reducing adjacency, preventing collapse and the like, and becomes a multifunctional finishing agent of a polymer drilling fluid system.

Description

technical field [0001] The invention relates to a petroleum drilling aid, in particular to a drilling fluid hydrolyzed polyacrylonitrile-complex ammonium salt. Background technique [0002] At present, in oil drilling operations, people in the industry often use bentonite and water to make drilling fluid to facilitate the normal drilling. In order to reduce the fluid loss of the drilling fluid and the apparent viscosity of the drilling fluid, a single-component treatment agent, such as hydrolyzed polyacrylonitrile ammonium salt, is usually added as a drilling aid, which can significantly reduce the filtration of the drilling fluid. Loss and apparent viscosity of the mud. However, there are still some shortcomings in using hydrolyzed polyacrylonitrile ammonium salt as a drilling aid. The salt resistance, viscosity reduction, temperature resistance, fluid loss reduction and anti-slump performance of the hydrolyzed polyacrylonitrile ammonium salt are not ideal. The well-dril...

Claims

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Application Information

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IPC IPC(8): C09K8/03
Inventor 赵秀平张建锋
Owner 石家庄华莱鼎盛科技有限公司
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