Oil well anti-eccentric wearing, corrosion-inhibiting and scale-removing agent with reversed phase accumulation

A technology of anti-eccentric wear and anti-scaling agent, which is applied in wellbore/well components, drilling composition, earthwork drilling and production, etc. It can solve the problems of oilfield economic loss and serious corrosion and scaling of oil production equipment, etc.

Active Publication Date: 2011-01-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ma Xingqin et al. published a new technology of anti-corrosion and anti-scaling in the period of high water content in the journal of Southwest Petroleum Institute, No. 1, 2006, pointing out that after the oilfield enters the development of high water content, the corrosion and scaling of oil production equipment is becoming more and more serious, and the oil field is seriously damaged. The development of the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: The weight percent of each component of the oil well anti-eccentric wear and anti-corrosion anti-scaling agent accumulated in reverse phase is:

[0042] 1. Iturin A (Iturins), (industrial product): 8.25%;

[0043]2. Bacillus licheniformis (Bacillomycin), (industrial product): 8.2%;

[0044] 3. Fengycin (industrial product): 6.25%;

[0045] 4. β-carotene (industrial product): 0.01%;

[0046] 5. Vitamin C (industrial product): 0.01%;

[0047] 6. Sodium nitrite (industrial product): 0.5%;

[0048] 7. Water: 76.78%.

[0049] It is applied to 5 oil wells with water cut of 45-55%, and when the dosage is 150mg / l, the oil well pump inspection period is extended by 1.98 times.

Embodiment 2

[0050] Embodiment 2: The weight percent of each component of the oil well anti-eccentric wear, anti-corrosion, cleaning and anti-scaling agent accumulated in reverse phase is:

[0051] 1. Iturin A (Iturins), (industrial product): 7.6%;

[0052] 2. Bacillus licheniformis (Bacillomycin), (industrial product): 8.7%;

[0053] 3. Fengycin (industrial product): 6.6%;

[0054] 4. β-carotene (industrial product): 0.03%;

[0055] 5. Vitamin C (industrial product): 0.03%;

[0056] 6. Sodium nitrite (industrial product): 0.6%;

[0057] 7. The rest is water.

[0058] Applied to 4 oil wells with water cut of 55-65%, when the dosage is 150mg / l, the oil well pump inspection period is extended by 2.45 times.

Embodiment 3

[0059] Embodiment 3: The weight percent of each component of the oil well anti-eccentric wear and anti-corrosion anti-scaling agent stacked in reverse phase is:

[0060] 1. Iturin A (Iturins), (industrial product): 7.0%;

[0061] 2. Bacillus licheniformis (Bacillomycin), (industrial product): 10.3%;

[0062] 3. Fengycin (industrial product): 7.0%;

[0063] 4. β-carotene (industrial product): 0.01%;

[0064] 5. Vitamin C (industrial product): 0.01%;

[0065] 6. Sodium nitrite (industrial product): 0.65%;

[0066] 7. Water: 75.03%.

[0067] Applied to 3 oil wells with water cut of 65-75%, when the dosage is 150mg / l, the oil well pump inspection period is extended by 2.17 times.

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Abstract

The invention relates to an oil well anti-eccentric wearing, corrosion-inhibiting and scale-removing agent with reversed phase accumulation, which is applied in corrosion inhibition and scale removal of an oil well. The agent comprises the following components by weight percent: 6.75-8.25% of iturin A, 8.15-11.15% of bacillus licheniformis, 6.25-7.75% of fengycin, 0.01-0.03% of beta-carotene, 0.01-0.03% of vitamin C, 0.5-0.75% of sodium nitrite and the balance of water. The agent has the effects that the prepared scale-removing agent can be applied in the oil well, solve the problems of eccentric wear, corrosion and scale formation of the oil well which contains more than 45% of the water, and prolong the pump detection cycle by 2.15 times on average under the situation of leading the adding amount of the oil well to be 150mg/l.

Description

technical field [0001] The invention relates to the technical field of chemicals used in the petroleum industry, in particular to a corrosion-inhibiting, cleaning-scaling and anti-scaling agent and a preparation method thereof. Background technique [0002] At present, with the continuous deepening of oilfield development, the number of inclined wells in newly invested development blocks has increased, and the water content of oil wells in old oilfields has increased year by year. reason. Technicians have taken a variety of anti-eccentric wear, anti-corrosion and anti-scaling measures, and achieved certain results, but there are certain limitations. for example: [0003] Liu Beiyi published the application of oil well anti-eccentric wear matching technology in Xianhezhuang Oilfield in the 14th issue of Small and Medium-sized Enterprise Science and Technology Magazine in 2008. In this paper, the oil well production cycle of Xianhezhuang Oilfield is short, the partial wear i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/54C09K8/52
Inventor 付亚荣付茜李造吉刘春平李淼李冬青付丽霞许定光文云飞靳瑛杨春燕李小永姜一超胡占国傅新勇贾彦行
Owner PETROCHINA CO LTD
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