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Ultra low temperature super guanidine gum fracturing fluid

A technology of super guar gum and fracturing fluid, which is applied in the field of fracturing fluid, can solve problems such as loss of production stimulation effect of fracturing measures, poor shear resistance of fracturing fluid, incomplete gel breaking of fracturing fluid, etc., to ensure success Adhesive properties, lower activation energy, and thorough gel breaking effects

Active Publication Date: 2009-09-16
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It will lead to poor shear resistance of the fracturing fluid, unable to form effective dynamic fractures and fracture widths suitable for adding sand. After the construction is completed, the fracturing fluid will not completely break the gel, causing damage to the stagnant reservoir, and the fracturing measures will lose the effect of increasing production. , therefore, the mature water-based fracturing fluid in the past can no longer meet the needs of fracturing

Method used

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  • Ultra low temperature super guanidine gum fracturing fluid
  • Ultra low temperature super guanidine gum fracturing fluid
  • Ultra low temperature super guanidine gum fracturing fluid

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with embodiment:

[0012] Well C 85-P Ping 33 is located in Daqing City, Heilongjiang Province, and belongs to the Chaoyanggou anticline structure of the Chaoyanggou terrace in the central depression area of ​​the northern Songliao Basin. The perforated intervals are 840.0-832.0m, 783.0-775.0m, 732.0-725.0m and 662.0-657.0m. The temperature in the middle of the reservoir is about 30°C.

[0013] The fracturing fluid system for this layer was sheared for 40 min at 30°C, and the viscosity was 203.1 mPa.s (see Table 1, figure 1 ), and the viscosity of the fracturing fluid after 4 hours at 30°C was 3.8mPa.s, and the viscosity of the fracturing fluid base fluid prepared on site was 30.4mPa.s. In order to meet the needs of layer construction, the well was fractured in 4 intervals, and a total of 115m of proppant was added 3 , and the construction went smoothly (the construction curve of the third section o...

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Abstract

The invention relates to ultra low temperature super guanidine gum fracturing fluid, comprising the ingredients with mass percents as follows: 0.20% of super guanidine gum, 0.12% of organopolysiloxane, 0.07% of polyoxypropylene polyoxyethylene polyoxypropylene octadeyl alcohol ether, 0.32% of cationic organic amino, 0.09% of cationic long chain polymer, 0.03% of organic silicone oil, 0.0003% of borax, 0.00027% of persulfate, 0.00009% of hyper-valent oxysalt, 0.00014% of peroxide and balance of water. The fracturing fluid has good anti-shearing property and breaks gum completely.

Description

Technical field: [0001] The invention relates to a fracturing fluid used in the field of oil recovery in an oil field, in particular to a fracturing working fluid used in fracturing ultra-low temperature reservoirs at 30°C. Background technique: [0002] With the development of the contemporary world economy, the need for oil resources and the continuous improvement of exploration and development awareness, ultra-low temperature reservoirs have been discovered one after another, and have certain oil shows. Fracturing fluid is the working fluid for fracturing construction, which is used to transfer The energy makes the oil layer open fractures, and transports proppant along the fractures, thereby forming a channel with high conductivity in the oil layer, so as to facilitate the flow of oil and gas from far away in the formation to the bottom of the well, so as to achieve the purpose of increasing production. [0003] The widely used fracturing thickener guar gum dissolves mai...

Claims

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Application Information

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IPC IPC(8): C09K8/68
Inventor 张浩王贤君温海飞孙国辉
Owner PETROCHINA CO LTD
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