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System for realizing continuous mixing by utilizing liquid-state guar gum and mixing technology thereof

A liquid guar gum and mixing technology, which is applied in mixers, mixer accessories, mixers with rotary stirring devices, etc., can solve the problems of high viscosity of liquid guar gum, liquid dispensing, and no liquid guar gum.

Inactive Publication Date: 2015-12-09
CNPC BOHAI DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high viscosity of liquid guar gum, the liquid additive pump of ordinary sand mixer trucks cannot pump liquid guar gum into the mixing tank for liquid dosing. At the same time, there is no process and supporting equipment for continuous liquid dosing using liquid guar gum in China.

Method used

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  • System for realizing continuous mixing by utilizing liquid-state guar gum and mixing technology thereof
  • System for realizing continuous mixing by utilizing liquid-state guar gum and mixing technology thereof
  • System for realizing continuous mixing by utilizing liquid-state guar gum and mixing technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the continuous mixing system utilizing liquid guar gum includes a mixed solution preparation system, a fracturing fluid preparation system, a fracturing fluid delivery system and a computer control system 23, wherein:

[0030]Described mixed solution preparation system comprises clear water tank 4, liquid guar gum tank 6, clear water delivery system, liquid guar gum delivery system, mixing tank 1 and mixed solution delivery system, and described clear water delivery system comprises the communication tank 4 and the The connecting pipeline between the mixing tank 1 and the first large displacement liquid pump 5 and the first flow meter 3 arranged on the connecting pipeline; The connecting pipeline between the mixing tank 1 and the high-viscosity liquid pump 7 and the second flow meter 8 installed on the connecting pipeline; the mixed liquid delivery system includes connecting the mixing tank 1 and the sand mixing tank The connecting pipeline b...

Embodiment 2

[0035] Embodiment 2 (pre-fluid dosing example)

[0036] Such as figure 2 As shown, the specific steps for preparing the pre-flush by using the continuous mixing system are:

[0037] 1) Input the preparation process parameters of the front liquid through the man-machine interface of the computer control system: comprise the mass ratio of liquid guar gum and clear water (such as setting the liquid guar gum quality as 0.35% of the clear water quality), the first type of liquid additive Addition amount, the addition amount of capsule gel breaker, the addition amount of the second type liquid additive, the rotating speed of the first high-speed mixer 2, the rotating speed of the second high-speed mixer 12, and the initial rotating speed of each pump located on the connecting pipeline;

[0038] 2) Turn on the first large-displacement liquid pump 5 and the high-viscosity liquid pump 7, so that clear water and liquid guar gum are pumped into the mixing tank 1 through the first large...

Embodiment 3

[0043] Embodiment 3 (fracturing fluid dosing example)

[0044] Such as image 3 As shown, the specific steps of using the continuous mixing system to prepare fracturing fluid are:

[0045] 1) Input the preparation process parameters of the front liquid through the man-machine interface of the computer control system: comprise the mass ratio of liquid guar gum and clear water (such as setting the liquid guar gum quality as 0.35% of the clear water quality), the first type of liquid additive Addition amount, the addition amount of capsule gel breaker, the addition amount of the second type liquid additive, the rotating speed of the first high-speed mixer 2, the rotating speed of the second high-speed mixer 12, and the initial rotating speed of each pump located on the connecting pipeline;

[0046] 2) Turn on the first large-displacement liquid pump 5 and the high-viscosity liquid pump 7, so that clear water and liquid guar gum are pumped into the mixing tank 1 through the first...

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Abstract

The invention discloses a system for realizing continuous mixing by utilizing liquid-state guar gum and a mixing technology thereof. The system for realizing continuous mixing by utilizing liquid-state guar gum comprises a mixed-solution preparation system, a fracturing-fluid preparation system, a fracturing-fluid conveying system and a computer control system, and through computer parameter setting and control realization of fracturing-fluid continuous mixing, the mixing efficiency is improved, worker labor intensity is reduced and cost expenditure is saved. According to the mixing technology utilizing the system for realizing continuous mixing by utilizing liquid-state guar gum, different materials are transported according to different kinds and addition subsequences by a liquid conveying system, and are controlled by a computer control system for being precisely successively sent to a mixing tank and a sand mixing tank for fully mixing, and finally the fracturing fluid is injected into the stratum by an output pump, so that the technological requirements of continuous fracturing construction simultaneously performing preparation and injection are completely satisfied.

Description

technical field [0001] The invention relates to the technical field of fluid mixing technology for fracturing construction of oil and gas wells, in particular to a continuous mixing system and mixing technology using liquid guar gum. Background technique [0002] Hydraulic fracturing technology is a widely used oil and gas well stimulation measure. During the construction process, the quality of the fracturing fluid plays a vital role in the success of the fracturing operation. The fracturing fluid is made of guar gum powder and water in a certain proportion to make the base fluid, and a certain amount of cross-linking agent, gel breaker, drainage aid and anti-swelling agent are added according to the needs of different formations, and the final formation has A liquid with a certain viscosity to bring ceramsite into the formation. When using guar gum powder to prepare fracturing fluid, there are two problems. On the one hand, "fish eyes" are easy to appear, which affects t...

Claims

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Application Information

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IPC IPC(8): B01F7/18B01F15/02B01F15/04E21B43/267
Inventor 李风光牛增前尹海霞何志勇梅雷
Owner CNPC BOHAI DRILLING ENG
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