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A kind of viscosity-increasing fluid loss reducing compound agent for seawater slurry and preparation method thereof

A technology of sea cement slurry and fluid loss control agent, which is applied in the directions of drilling compositions, chemical instruments and methods, etc., can solve the problems of easy agglomeration or mildew, difficult storage of salt-resistant glue and protective agent, and high cost, so as to prevent moisture. Mildew, good salt resistance, easy to operate

Active Publication Date: 2020-12-15
宣化燕北矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the existing salt-resistant gel protectant used in seawater drilling fluid, which is not easy to store, easy to agglomerate or mildew, and high cost, the present invention provides a viscosity-increasing fluid loss compounding agent for seawater slurry and a preparation method thereof

Method used

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  • A kind of viscosity-increasing fluid loss reducing compound agent for seawater slurry and preparation method thereof
  • A kind of viscosity-increasing fluid loss reducing compound agent for seawater slurry and preparation method thereof
  • A kind of viscosity-increasing fluid loss reducing compound agent for seawater slurry and preparation method thereof

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preparation example Construction

[0027] In one embodiment, the preparation method at least includes the following steps:

[0028] (1) Mixing the salt-resistant vegetable gum, the salt-resistant viscosity-lifting fluid loss reducer, and the high-calcium and high-temperature-resistant polymer fluid loss reducer to obtain a mixed material;

[0029] (2) Add the modified sodium-based bentonite to the mixed material, and carry out coating mixing to obtain the seawater viscosity-increasing fluid loss compounding agent.

[0030] Preferably, the preparation method of modified sodium bentonite is as follows:

[0031] (21) After the raw ore bentonite is crushed and homogenized, the particle size is sieved to obtain the raw ore soil;

[0032] (22) Carry out mixing treatment with described raw ore soil and sodiumizing agent, salt-resistance modifier, ion modification auxiliary agent, obtain mixed material;

[0033] (23) Add water into the mixed material, and after stirring treatment, carry out stack aging treatment and ...

Embodiment 1

[0044] A viscosity-increasing fluid loss reducing compound agent for seawater slurry, comprising the following raw material components in mass percentage:

[0045]

[0046] The preparation method of the viscosity-increasing fluid loss reducing compound agent for seawater slurry comprises the following steps:

[0047] (1) carrying out mixing treatment with guar gum, hydroxyethyl cellulose, anti-high calcium and high temperature resistant polymer fluid loss reducer, and polyanion cellulose to obtain a mixed material;

[0048] (2) Add the modified sodium-based bentonite to the mixed material, and carry out coating mixing to obtain the seawater viscosity-increasing fluid loss compounding agent.

Embodiment 2

[0050]

[0051] The preparation method of the viscosity-increasing fluid loss reducing compound agent for seawater slurry comprises the following steps:

[0052] (1) carrying out mixing treatment with guar gum, hydroxyethyl cellulose, anti-high calcium and high temperature resistant polymer fluid loss reducer, and polyanion cellulose to obtain a mixed material;

[0053] (2) Add the modified sodium-based bentonite to the mixed material, and carry out coating mixing to obtain the seawater viscosity-increasing fluid loss compounding agent.

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Abstract

The invention relates to the technical field of bentonite ore in-depth processing, in particular to a tackifying fluid loss complex agent for seawater mud and a preparation method thereof. The tackifying fluid loss complex agent comprises, by mass, 5-20% of anti-salt vegetable gum, 10-30% of anti-high-calcium anti-high-temperature polymer fluid loss agent, 20-40% of tackifying fluid loss agent and 10-30% of modified sodium-based bentonite. The preparation method is simple in process, convenient to operate, safe, environment-friendly and low in cost, the tackifying fluid loss complex agent is easy to store, added components can maintain activity for a long time under the condition of coating and isolating by modified sodium-based bentonite, and the complex agent has good anti-salt performance.

Description

technical field [0001] The invention relates to the technical field of bentonite ore deep processing, in particular to a viscosity-increasing fluid loss reducing compound agent for seawater slurry and a preparation method thereof. Background technique [0002] At present, there are basically two forms of drilling fluid preparation in offshore, seaside and high salinity water quality areas (including non-excavation projects, such as horizontal directional drilling crossing projects) all over the world: one is to add bentonite mud with fresh water (commonly known as pre-hydration of bentonite with fresh water), and then add various required anti-salt protective glue to make a very thick base slurry, and then dilute it with seawater (high salinity water) to the required mud index. During the construction, fresh pulp is constantly replenished and salt-resistant glue is added, and the salt-resistant effect is poor. This method requires uninterrupted fresh water transportation and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/24
CPCC09K8/24
Inventor 安云翔
Owner 宣化燕北矿业有限责任公司
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