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Oil-soluble thickened oil viscosity reducer

A heavy oil viscosity reducer and oil-soluble technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of increasing the cost of oil extraction and consuming large heat energy, and achieve low cost, good viscosity reduction effect, low price effect

Inactive Publication Date: 2014-03-19
SICHUAN HAIDUN PETROLEUM NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the oil washing resources are becoming more and more scarce, and it is extremely urgent to seek viscosity reduction methods other than diluting. In addition, thermal recovery based on steam huff and puff or steam flooding consumes a lot of heat energy, which increases the cost of oil extraction

Method used

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  • Oil-soluble thickened oil viscosity reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Weigh 100 g of heavy oil, add 0.2 g of polymethyl acrylate, and stir well, use Brookfield Ivdv-III rheometer (No. 64 rotor) to measure the viscosity of heavy oil, and the test results are shown in Table 1.

Embodiment 2

[0013] Weigh 100 g of heavy oil, add 0.2 g of butyl acrylate into the heavy oil, and after stirring, test the viscosity of the heavy oil with a Brookfield Ivdv-III rheometer (No. 64 rotor). The test results are shown in Table 1.

Embodiment 3

[0015] Weigh 100g of thick oil, add 0.1g of ethyl oleate and 0.1g of butyl laurate into the thick oil, after stirring, test the viscosity of the thick oil with a Brookfield Ivdv-III rheometer (No. 64 rotor), and the test results See Table 1.

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PUM

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Abstract

The invention discloses an oil-soluble thickened oil viscosity reducer belonging to the technical field of viscosity reducers for thickened crude oil. The viscosity reducer comprises at least one long-chain aliphatic ester, and the number of partial carbon atoms of aliphatic acid constituting the aliphatic ester is from 2 to 30. The dosage of the viscosity reducer accounts for less than 0.2% of the total amount of thickened oil, the viscosity of the thickened oil can be reduced by above 55%, and the viscosity reducer has good viscosity reducing effect; and the viscosity reducer has less dosage, and the used materials have low prices so that the viscosity reducer has low cost.

Description

technical field [0001] The invention relates to a viscous reducer for viscous crude oil. the Background technique [0002] With the deepening of oilfield exploration and development, the proportion of heavy oil is increasing. Heavy oil is crude oil with high asphaltene and colloid content and high viscosity. Crude oil with a surface density greater than 0.943 and an underground viscosity greater than 50 centipoise is usually called heavy oil. Because of its high density, heavy oil is also called heavy oil. Realizing the effective development of heavy oil reservoirs is an important research content of the national strategic plan for the sustainable development of oil and gas resources. Due to the characteristics of high density, high viscosity and poor fluidity of heavy oil, it brings great difficulties to mining and transportation. At present, methods such as heat mixing and thin oil blending are commonly used, the purpose of which is to reduce the viscosity of heavy oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/524
Inventor 董宇光
Owner SICHUAN HAIDUN PETROLEUM NEW TECH DEV