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Filtrate reducer and preparation method thereof

A fluid loss control agent and dispersant technology, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as toluene toxicity, reduce emulsion blockage, have good compatibility, and reduce instantaneous fluid loss and filtration. The effect of missing coefficients

Active Publication Date: 2013-11-27
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because toluene is poisonous, it is often not used on site

Method used

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  • Filtrate reducer and preparation method thereof
  • Filtrate reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) under normal pressure, add 700ml part of light petroleum product in 1000ml container, stand-by;

[0023] 2) Take 10ml of hydrocarbon dispersant A and 10ml of hydrocarbon dispersant B in a dry stirring bottle, mix and stir for 15min evenly;

[0024] 3) Slowly add the mixed solution of the above-mentioned hydrocarbon dispersant A and hydrocarbon dispersant B to the light petroleum product in the 1000ml container;

[0025] 4) Mix the above ingredients evenly and stir for 15 minutes;

[0026] 5) Add 10ml of cedar oil and mix evenly to obtain 730ml of fluid loss control agent.

[0027] Among them, light petroleum products are high-purity kerosene purchased from Beijing Beiqiao Borun Petrochemical Co., Ltd., by weight percentage, alkanes (C11-15) 28-48%, aromatics (C15-17) 20-50%, unsaturated Hydrocarbon (C11-14) 1-6%, cyclic hydrocarbon (C15-17) 17-44%; hydrocarbon dispersant A is a hydrophilic emulsifier (Tween-20 , chemical name is polyoxyethylene sorbitan fatty acid...

Embodiment 2

[0029] 1) under normal pressure, add 800ml part of light petroleum product in 1000ml container, stand-by;

[0030] 2) Take 75ml of hydrocarbon dispersant A and 75ml of hydrocarbon dispersant B in a dry stirring bottle, mix and stir for 15min evenly;

[0031] 3) Slowly add the mixed solution of the above-mentioned hydrocarbon dispersant A and hydrocarbon dispersant B to the light petroleum product in the 1000ml container;

[0032] 4) Mix the above ingredients evenly and stir for 15 minutes;

[0033] 5) Add 50ml of cedar oil and mix evenly to obtain 1000ml of fluid loss control agent.

Embodiment 3

[0035] 1) under normal pressure, add 700ml part of light petroleum product in 1000ml container, stand-by;

[0036] 2) Take 75ml of hydrocarbon dispersant A and 75ml of hydrocarbon dispersant B in a dry stirring bottle, mix and stir for 15min evenly;

[0037] 3) Slowly add the mixed solution of the above-mentioned hydrocarbon dispersant A and hydrocarbon dispersant B to the light petroleum product in the 1000ml container;

[0038] 4) Mix the above ingredients evenly and stir for 15 minutes;

[0039] 5) Add 50ml of cedar oil and mix evenly to obtain 900ml of fluid loss control agent.

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Abstract

The invention provides a filtrate reducer. The filtrate reducer comprises the following raw materials in parts by weight: 700 to 800 parts of a light petroleum product, 10 to 75 parts of a hydrocarbon dispersing agent A, 10 to 75 parts of a hydrocarbon dispersing agent B and 10 to 50 parts of cedar oil. The filtrate reducer provided by the invention can react with water-based fracturing liquid to form an emulsion to achieve a de-filtration effect, has an excellent dispersing effect, has excellent compatibility with vegetable glue water-based fracturing liquid, can effectively reduce instant filtration and filtration coefficient of the fracturing liquid and reduce blockage of emulsion, and does not have any influence on temperature resistance, shear resistance and viscosity performance of the fracturing liquid at high temperature.

Description

technical field [0001] The invention relates to a treatment technology for fracturing fluid, in particular to a fluid loss reducer and a preparation method thereof. technical background [0002] The fluid loss characteristics of the fracturing fluid have a great influence on the performance of the fracturing fluid. The lower the fluid loss rate, the stronger the fracture creation ability, and the more obvious the stimulation effect on oil and gas reservoirs. The filtration performance of fracturing fluid has become the most concerned issue of many oil and gas field development and engineering technical service companies. [0003] The total fluid loss of fracturing fluid can generally be divided into two parts: instantaneous fluid loss and long-term fluid loss characteristics expressed by fluid loss coefficient. The degree of instantaneous fluid loss depends on the viscosity of fracturing fluid, formation temperature and permeability. The purpose of using fluid loss reduce...

Claims

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Application Information

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IPC IPC(8): C09K8/68
Inventor 卢涛李跃刚李达谢璇白建文蔺吉春朱李安贾建鹏牟春国滕飞启傅鹏薛亚斐金龙程晓亮魏巍高峰曹红燕
Owner PETROCHINA CO LTD
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