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Oil well blockage removing pipe freeing agent and preparation thereof

A jam-releasing agent and a technology for oil wells, which are applied in chemical instruments and methods, drilling compositions and other directions, can solve problems such as inconvenient production management, and achieve the effects of eliminating well-jamming accidents and reducing oil-well pump inspection costs.

Active Publication Date: 2009-12-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has caused great inconvenience to production management

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: The weight ratio of each component of oil well plugging and unblocking agent is:

[0035] 1. Nonylphenol polyoxyethylene ether NPD-100 (industrial product): 7%;

[0036] 2. Nonylphenol polyoxyethylene ether NPD-200 (industrial product); 13%;

[0037] 3. Hydrochloric acid (industrial product): 3.1%

[0038] 4. Methanol: 22.5%;

[0039] 5. INTECHEM-02 fluorocarbon surfactant (industrial product): 0.12%;

[0040] 6. The rest is water, and the sum of the weight percentages of each component is 100%.

[0041] The preparation process of oil well plugging and unblocking agent:

[0042] First, five raw materials including nonylphenol polyoxyethylene ether NPD-100, nonylphenol polyoxyethylene ether NPD-200, hydrochloric acid, methanol, and INTECHEM-02 fluorocarbon surfactant were added in proportion to the atmospheric pressure enamel reaction kettle. Slowly raise the temperature to 50-66°C.

[0043] Second, after 30 minutes of constant stirring, the heating w...

Embodiment 2～5

[0045] The percentage by weight of each component of embodiment 2~5 oil well plugging and jam-removing agent is:

[0046] component name

Example 2

Example 3

Example 4

Example 5

Nonylphenol polyoxyethylene ether

NPD-100

6.2

7.1

7.5

8

Nonylphenol polyoxyethylene ether

NPD-200

13

13.5

12

14.8

hydrochloric acid

2.3

3.5

2.8

3.4

Methanol

22

21

24

24.6

INTECHEM-02

Fluorocarbon Surfactant

0.08

0.12

0.2

0.14

water

the remaining

the remaining

the remaining

the remaining

[0047] For Examples 2-5, the sum of the weight percentages of each component is 100% for oil well plugging and jam-removing agents, and the preparation process is the same as that of Example 1.

[0048] The present invention has been tested in more than 30...

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PUM

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Abstract

Oil well plugging and anti-jamming agent is applied to oil wells in oil fields to relieve well jamming accidents caused by scale deposition. The characteristics are: the weight ratio of each component is: a, nonylphenol polyoxyethylene ether NPD-100: 5.5-8%; b, nonylphenol polyoxyethylene ether NPD-200: 10-15%; c, hydrochloric acid: 2.0~3.5%; d. Methanol: 20~25%; e. INTECHEM-02 fluorocarbon surfactant: 0.05~0.2%; f. The rest is water. The effect is: use 0.5% to 1% aqueous solution of plugging and unblocking agent to flush the oil well with a large displacement, remove the well stuck accident caused by scale deposition, prolong the inspection period of the pump, reduce the cost of oil well pump inspection, and reduce the cost of oil production .

Description

technical field [0001] The invention relates to the technical field of oilfield chemistry, in particular to an oil well plugging and jam-removing agent, which is used for eliminating well jamming accidents caused by scale deposition and reducing oil well pump inspection costs. Background technique [0002] After the oil field entered the medium-high water cut period, some oil wells had severe scaling. Although the scaling was alleviated by adding antiscalants in the oil wells, when a power failure occurred, a part of the scaling was deposited on the oil well pump, often causing well jamming accidents. The oil wells that caused the stuck well accident can only resume normal oil production by checking the pump. It has caused great inconvenience to production management. Contents of the invention [0003] The object of the present invention is to provide an oil well plugging and jam-removing agent and a preparation method thereof, which uses 0.5% to 1% oil well plugging and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/78
Inventor 付亚荣周晓俊田炜蔡远红吴泽美李冬青吕德福孙学峰郝玉军蒲祥金常洪付丽霞郑征黎运强
Owner PETROCHINA CO LTD
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