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Continuous compounding method for fracturing fluid

A fracturing fluid and mixing technology, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of undeveloped and mixed fracturing fluid, achieve fast liquid hydration speed, and save construction liquid , the effect of reducing labor intensity

Active Publication Date: 2009-05-20
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It is precisely because of the constraints of the above aspects that no method has been developed at home and abroad that can continuously mix fracturing fluids on site.

Method used

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  • Continuous compounding method for fracturing fluid

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Embodiment 2

[0027] In embodiment 1, the dosing ratio of described setting is that the weight ratio of guar gum powder and clear water is 0.6%. The liquid additives include bactericides, drainage aids, clay stabilizers and preservatives, and the added amount of the liquid additives accounts for 2% of the total liquid volume. The bactericides, drainage aids, clay stabilizers and preservatives used in the liquid additives are selected by those skilled in the art according to the actual situation on the spot, and the proportioning relationship can be selected according to the actual situation.

Embodiment 3

[0029] As a preferred embodiment of the present invention, the implementation process of the present invention is: utilize simple and easy crane arm to be contained in the guar gum tank in advance with instant guar gum, the guar gum is supplied to the jet mixer of automatic flow regulation through precision screw feeder, The feeding amount is adjusted by the rotating speed of the screw feeder, and the feeding amount of the screw feeding machine is controlled by the computer. The computer continuously reads the difference (feeding amount) per unit time of the electronic scale, and adjusts it according to the clean water flow and the ratio The speed of the screw feeder maintains the set liquid ratio.

[0030] The clean water pump draws clean water from the outside, and after being metered by the whole process flow regulating valve and flow meter, it is pumped into the jet mixer that automatically adjusts the flow, and mixed with guar gum.

[0031] The computer adjusts the whole ...

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Abstract

The invention discloses a fracturing fluid continuous mixing method, comprising the steps as follows: guar gum is input into an injection-typed mixer which can automatically adjust the flux by a precise spiral feeding machine; the feeding quantity of the guar gum is adjusted by the rotation speed of the precise spiral feeding machine; the blanking quantity of the spiral feeding machine is controlled by a computer which can continuously read the difference value of an electronic balance within unit time, adjusts the rotation speed of the spiral feeding machine according to the flux and proportion of the external clean water and keeps the given liquid mixing ratio; the method is applicable to continuous mixing in-situ, the mixed fracturing fluid has good quality, the hydration speed of the liquid is fast, the labor intensity of workers is reduced, the cost payout is saved and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of fluid mixing technology for fracturing construction in oil and gas fields, in particular to a continuous mixing method for fracturing fluid. Background technique [0002] In the process of oil extraction, in order to increase oil production, oil fracturing technology is widely used at home and abroad to improve the extraction rate of oil in the oil layer and prolong the production life of the oil field. In petroleum fracturing technology, the quality of fracturing fluid preparation plays a vital role in the success of fracturing operations. Petroleum fracturing fluid is a uniform liquid with a certain viscosity made of vegetable rubber powder and water in a certain proportion, plus several additives such as demulsifiers, drainage aids, viscosity reducers, etc. At present, the oil industry at home and abroad has higher and higher requirements on the quality of petroleum fracturing fluid. The requirements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68
Inventor 李静群苏金柱孙虎白明伟杨德勇高红萍
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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