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Solid biochemical paraffin prevention block for oil well and preparation method thereof

A technology for preventing wax blocks and solids, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of high production cost, complicated operation, short validity period, etc. Effects of the Wax Cycle

Inactive Publication Date: 2012-01-18
XIAN REJE BIOLOGICAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, oilfields mostly use thermal wax removal, mechanical wax removal, and wax removal and anti-wax agent to solve the problem of wax deposition in oil wells. These methods have short validity period after wax removal, high cost, and complicated operation. A single oil well needs to be used several times a year. Repeated use, resulting in high production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) prepare 65 kilograms of ethylene-vinyl acetate copolymers (the mass percentage of vinyl acetate is 33%), 23 kilograms of AEO-7, 21 kilograms of LDPE, 14 kilograms of ODEA, and mix well under room temperature conditions;

[0024] (2) adding the obtained mixture into the injection molding machine and mixing, and the mixing temperature is controlled at 110-130 ° C;

[0025] (3) Extruding the kneaded mixture under high pressure to obtain 100 anti-wax blocks of uniform size; wherein the molding temperature is controlled at 70-80°C, and the pressure is maintained at 10MPa for 10min;

[0026] (4) Drill holes evenly on each of the formed wax-proof blocks, and evenly add 0.02 kg of hydrocarbon-releasing bacteria D-2 (purchased from Northwestern University School of Life Sciences) into the holes.

[0027] (5) Using the test method described in Appendix A of SY / T 6300-2009 "Technical Conditions for Oil Removal and Wax Preventing Agents", the wax prevention rate and viscosity r...

Embodiment 2

[0029] (1) prepare 55 kilograms of ethylene-vinyl acetate copolymers (the mass percentage composition containing vinyl acetate is 28%), 20 kilograms of AEO-9, 17 kilograms of 2426H, 8 kilograms of ODEA, and mix well under room temperature conditions;

[0030] (2) adding the obtained mixture into the injection molding machine and mixing, and the mixing temperature is controlled at 110-130 ° C;

[0031] (3) Extruding the kneaded mixture under high pressure to obtain 100 anti-wax blocks of uniform size; wherein the molding temperature is controlled at 70-80°C, and the pressure is maintained at 10MPa for 10min;

[0032] (4) Drill holes evenly on each of the formed wax-proof blocks, and evenly add 0.02 kg of hydrocarbon-releasing bacteria D-2 (purchased from Northwestern University School of Life Sciences) into the holes.

[0033] (5) Using the test method described in Appendix A of SY / T 6300-2009 "Technical Conditions for Oil Removal and Wax Preventing Agents", the wax prevention ...

Embodiment 3

[0035] (1) prepare 50 kilograms of ethylene-vinyl acetate copolymer (the mass percentage composition containing vinyl acetate is 40%), 30 kilograms of AEO, 14 kilograms of 2426H, 6 kilograms of ODEA, and mix well under room temperature conditions;

[0036] (2) adding the obtained mixture into the injection molding machine and mixing, and the mixing temperature is controlled at 110-130 ° C;

[0037] (3) Extruding the kneaded mixture under high pressure to obtain 100 anti-wax blocks of uniform size; wherein the molding temperature is controlled at 70-80°C, and the pressure is maintained at 10MPa for 10min;

[0038] (4) Drill holes evenly on each of the formed wax-proof blocks, and evenly add 0.02 kg of hydrocarbon-releasing bacteria D-2 (purchased from Northwestern University School of Life Sciences) into the holes.

[0039] (5) Using the test methods described in Appendix A of SY / T 6300-2009 "Technical Conditions for Oil Removal and Wax Preventing Agents", the wax prevention ra...

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PUM

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Abstract

The invention provides a solid biochemical paraffin prevention block for an oil well and a preparation method thereof, relating to a composition for treating organic deposits in holes or wells and a preparation method thereof. By using the solid biochemical paraffin prevention block for the oil well, the paraffin prevention period of the oil well can be effectively prolonged, and the output of the oil well can be improved; the operation process is simple; the solid biochemical paraffin prevention block is convenient, safe and environment-friendly in use, does not pollute crude oil, and is a long-lasting solid paraffin prevention agent; the unqualified products generated in the production process can be re-processed, thus no waste is generated in the production process, and the environment can not be influenced; and the product has a paraffin prevention rate not less than 75% and a paraffin prevention effective period not less than 240 days.

Description

【Technical field】 [0001] The invention relates to a composite wax inhibitor for preventing wax deposition in crude oil and a preparation method thereof. 【Background technique】 [0002] For newly developed oilfields and low water-cut oilfields, when crude oil is extracted from the oil well, the temperature and pressure of the crude oil change accordingly. Afterwards, it adheres to the oil pipe and oil pump to form a wax plug, which causes the oil well to produce less oil, no oil, or even the sucker rod fracture due to excessive load, which directly affects the normal production of the oil well. At present, thermal washing, mechanical wax removal, and wax removal and anti-wax removal agent are used in oil fields to solve the problem of wax deposition in oil wells. These methods have a short validity period after wax removal, high cost and complicated operation. A single oil well needs several times a year. Repeated use, resulting in high production costs. [Content of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
Inventor 陈富林孙叶芳陈文刚
Owner XIAN REJE BIOLOGICAL TECH
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