Preparation raw material, preparation method and application of online concentrated drag reduction liquid for fracturing

A fracturing and liquid-blocking technology, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of slow water solubility, poor drag reduction effect, and large addition amount, so as to achieve simple use process and reduce fracturing Effect of less cost and residue content

Pending Publication Date: 2020-05-15
彭辉 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the dry powder drag reducer tends to form balls during use, and the water solubility is slow; although the emulsion polymer prepared by the inverse emulsion polymerization method has good water solubility in use, it needs to use a certain amount of Organic solvent, the environmental protection of the product is poor; the emulsion polymer prepared by the solution polymerization method is also good in water solubility, but the general molecular weight is low, the addition amount is large, and the drag reduction effect is slightly poor

Method used

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  • Preparation raw material, preparation method and application of online concentrated drag reduction liquid for fracturing
  • Preparation raw material, preparation method and application of online concentrated drag reduction liquid for fracturing
  • Preparation raw material, preparation method and application of online concentrated drag reduction liquid for fracturing

Examples

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Effect test

Embodiment 1

[0040] Example 1 Raw materials for the preparation of online concentrated drag reducing fluid for fracturing

[0041] The raw materials for preparing the online concentrated drag reducing fluid for fracturing in this example consist of the following components: polymer, high-efficiency water diversion agent, micropore generator, base oil, main emulsifier and auxiliary emulsifier. The distribution of each group is as follows:

[0042] Polymer: 100 parts by mass; high-efficiency water-inducing agent: the added mass is 2.0%-10.0% of the polymer mass; microporous agent: the added mass is 3.0%-5.0% of the polymer mass; base oil: the added mass 100.0%-150.0% of the mass of the polymer; main emulsifier: 1.0-3.0% of the sum of the mass of the polymer and base oil; secondary emulsifier: 0.5-3.0% of the sum of the mass of the polymer and base oil 2.0%. The polymer is a polyacrylamide water-soluble polymer; the high-efficiency water diversion agent is one of a polyol-type surfactant ...

Embodiment 2

[0044] Example 2 Preparation method of online concentrated drag reducing fluid for fracturing

[0045] Utilize the preparation raw material of on-line concentrated drag reducing fluid for fracturing in embodiment 1 to prepare, specifically include the following steps:

[0046]Step 1, 100.0 kg of polymer (modified anionic polyacrylamide introduced into the market with temperature-resistant and salt-resistant groups, this embodiment adopts AP-P4 associative polymer produced by Sichuan Guangya Polymer Chemical Co., Ltd.), Diluted with deionized water to a concentration of 80% by mass, and stirred in a kneader for 1 hour to obtain a stock solution;

[0047] Step 2. Slowly add 10.0 kg of high-efficiency water-inducing agent isomeric tridecyl alcohol polyoxyethylene ether (commercially available product code is E-1302) into the stock solution described in step 1, and stir for 2 hours to make it fully mixed;

[0048] Step 3. Slowly add 5.0 kg of microporous generating agent sodium...

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Abstract

The invention discloses a preparation raw material, preparation method and application of online concentrated drag reduction liquid for fracturing. The preparation raw material is composed of the following components: a polymer, a high-efficiency water diversion agent, a micropore generating agent, base oil, a main emulsifier and an auxiliary emulsifier. The preparation method comprises the following steps: (1) diluting a polymer with deionized water until the mass percentage concentration is 50-80% to obtain a stock solution; (2) slowly adding an efficient water diversion agent into the stocksolution prepared in the step (1); (3) slowly adding a micropore generating agent into the solution prepared in the step (2) to obtain a water phase part; (4) mixing the main emulsifier and the auxiliary emulsifier to obtain an oil phase part; and (5) adding the oil phase part in the step (4) and the water phase part in the step (3) into a reactor to obtain the online concentrated drag reductionliquid for fracturing. The drag reduction liquid has the advantages of being high in effective content, safe, environmentally friendly, rapid to dissolve, multipurpose, good in gel breaking effect andlow in residue content.

Description

technical field [0001] The invention relates to the technical field of oil and gas fracturing. Specifically, it relates to a preparation raw material, preparation method and application of online concentrated drag reducing fluid for fracturing. Background technique [0002] With the rapid development of oil and gas exploration business at home and abroad, hydraulic fracturing construction will occupy the leading position in oil and gas field stimulation measures at present and even for a longer period. The rapid development of construction technology has driven demand to develop more efficient, energy-saving and environmentally friendly , low-cost, low-friction clean fracturing fluid system that is simple to operate, can precisely match the process design and meet the needs of field operations. [0003] On-line fracturing is to add thickener, on-site water source (not specifically clean water) and proppant into the sand mixing tank of the sand mixing truck at the fracturing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68
CPCC09K8/68C09K8/882C09K8/885
Inventor 彭辉陈新阳范子阳
Owner 彭辉
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