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Novel vegetable gum fracturing fluid jelly for oil well

A vegetable glue and fracturing fluid technology, applied in the field of fracturing fluid jelly, can solve the problems of unstable supply, high cost, high concentration of thickener, etc., and achieve the effect of low concentration

Active Publication Date: 2015-01-07
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Changqing Oilfield usually uses hydroxypropyl guar gum system as the construction fluid in oil well fracturing construction. Although the fracturing fluid of this system satisfies the needs of on-site fracturing technology in the oilfield, with the increase in the price of guar gum in 2012 Straight up, and a single supply channel, resulting in high costs and supply instability for fracturing construction
At the same time, the thickener used in this guar gum system has a high concentration and a large amount of gel breaker, which has a high rate of damage to the conductivity of the support crack.

Method used

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  • Novel vegetable gum fracturing fluid jelly for oil well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A new type of vegetable gum fracturing fluid jelly for oil wells, which is prepared from the following components according to the following mass percentages: 0.2% coriander gum, 0.5% anti-swelling agent, 0.6% cross-linking agent, and 0.7% drainage aid %, 0.08% bactericide and 97.92% water, (for the best formula) the described cougar gum is the product name of cougar gum XYXD-1, and the anti-swelling agent is the product name of anti-swelling agent XYFP-1. The product name of the drainage agent is drainage aid XYWZ-1, the cross-linking agent is 1,2-dicarbododecaborane, and the fungicide is formaldehyde or glutaraldehyde. The above chemical reagents were all purchased from Xi’an Changqing Oilfield Branch Chemical Group, address: Chaoyang 7 Road, Weicheng District, Xianyang City, Shaanxi Province, postal code 712042. The above-mentioned thickener is coumarin, which plays the role of thickening the aqueous solution. The jelly is suitable for oil wells.

[0018] The prepa...

Embodiment 2

[0022] A new type of vegetable gum fracturing fluid jelly for oil wells, which is prepared by the following components according to the following mass percentages: 0.15% cocoa gum, 0.3% anti-swelling agent, 0.4% cross-linking agent, 0.3% drainage aid %, 0.05% fungicide and 98.8% water, the anti-swelling agent is a compound of polyquaternium salt and potassium chloride with a molecular weight less than 40000; the cross-linking agent is 1,2-dicarbo Dodecaborane. The drainage aid is a compound of sodium lauryl sulfate and alcohols. The bactericide is formaldehyde or glutaraldehyde. The cougar gum is the product name cougar gum XYXD-1, purchased from Xi'an Changqing Oilfield Branch Chemical Group, the address is Chaoyang 7th Road, Weicheng District, Xianyang City, Shaanxi Province, postal code 712042. The jelly is suitable for oil wells. The preparation process is the same as in Example 1.

[0023] Although the viscosity of the base liquid is only 9 mPa·s, the viscosity of the...

Embodiment 3

[0025] A new type of vegetable gum fracturing fluid jelly for oil wells, which is prepared by the following components according to the following mass percentages: 0.25% cougar gum, 0.85% anti-swelling agent, 0.8% cross-linking agent, 1.0% drainage aid %, 0.1% fungicide and 97.0% water, the anti-swelling agent is anti-swelling agent XYFP-1 under the trade name, the drainage aid is the drainage aid XYWZ-1 under the trade name, and the cross-linking agent is 1,2 - Dicarbododecaborane, the bactericide is formaldehyde or glutaraldehyde, the above chemical reagents were purchased from the Chemical Group of Xi'an Changqing Oilfield Branch Company, the address is Chaoyang 7th Road, Weicheng District, Xianyang City, Shaanxi Province, postal code 712042. It can also be purchased from other marketplaces. The jelly is suitable for oil wells. The preparation process is the same as in Example 1.

[0026] Such as figure 1 Shown: the coumarin is prepared by the following process steps: ta...

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Abstract

The present invention relates to a novel vegetable gum fracturing fluid jelly for an oil well. The novel vegetable gum fracturing fluid jelly for the oil well is characterized by being prepared from the following components: 0.15-0.25% of fenugreek gum, 0.3-0.85% of anti-swelling agent, 0.4-0.8% of cross-linking agent, 0.3-1.0% of cleanup additive, 0.05-0.1% of bactericide, and 97.0-98.8% of water, wherein percentages aforementioned are mass percentages. A use concentration of the fenugreek gum in the novel vegetable gum fracturing fluid jelly for the oil well is low, and a use temperature ranges from room temperature to 145℃; a cost of underground construction work is reduced, and normal production and sustainable development of oilfield are guaranteed; and a research result has obvious economic benefits, important social benefits, and great popularization and application prospects.

Description

technical field [0001] The invention relates to a fracturing fluid jelly, in particular to a novel vegetable gum fracturing fluid jelly for oil wells. Background technique [0002] Changqing Oilfield is a low-porosity, ultra-low-permeability tight oil reservoir with a large oil and gas exploration and development area. Nearly tens of thousands of wells need to be fracturing every year. Therefore, there is a large demand for fracturing fluids, especially high-quality fracturing fluid products. At present, Changqing Oilfield usually uses hydroxypropyl guar gum system as the construction fluid in oil well fracturing construction. Although the fracturing fluid of this system satisfies the needs of the oil field fracturing process well, with the increase in the price of guar gum in 2012 The straight-line rise and the single supply channel have caused high costs and unstable supply for fracturing construction. At the same time, this guar gum system uses a high concentration of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/68
CPCC09K8/68C08B37/0087C08L5/00C09K8/685C09K8/887C09K8/90
Inventor 孙虎王祖文张冕廖乐军高燕李婧赵文钢陈亚联郭伟林李楠高红平
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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