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Wax-proof condensation-reducing cool temperature convey agent

A technology of cold transportation and wax prevention, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., which can solve the problems of energy waste, flammability, high cost, etc., and achieve the effect of reducing energy saving and consumption, and high freezing point reduction

Active Publication Date: 2007-07-11
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electric heating is the most effective measure for wax removal and prevention, but there are disadvantages such as high cost and unsafety; mechanical wax removal is likely to cause deficiencies such as stuck wells and worn oil pipes; organic solvent wax removal in chemical wax removers mostly uses mixed benzene and Light hydrocarbons, good wax removal effect
The disadvantages are flammable, explosive, high price, high toxicity, large dosage, and complicated dosing process
[0003] At present, crude oil pumping mostly adopts segmented fixed-point heating for oil transfer, which not only wastes a lot of energy required for heating, but also builds heating pump stations in segments, which is also very troublesome for the management of oil pipelines

Method used

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Embodiment Construction

[0011] The pour-point depressant and anti-wax cold transfer agent is composed of a variety of polymers, and its single molecule acts as a paraffin seed crystal in crude oil, so that the paraffin in the crude oil is centered on the molecule of the pour-point depressant and anti-wax cold transfer agent to form more Small crystals prevent wax crystals from accumulating and growing on tubing walls and sucker rods. As a result, paraffin crystals in crude oil change in shape, and wax crystals become smaller, irregular spherical, and suspended in light components of crude oil In the middle, the structural strength is reduced, and it is not easy to form a network structure with each other, so the low-temperature fluidity is also improved, and the freezing point is also lowered, achieving the purpose of wax prevention and pipeline cold transportation during the lifting process.

[0012] The waxes in the crude oil in the Hainan operation area are mainly distributed between carbon 15 and ...

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Abstract

The invention discloses a wax-proof pour point depression cold transmitting agent of dilute oil well, which is characterized by the following: controlling the sediment on the oil pipe and oil extract rod and exterior output pipe through the quantity of dispersant of wax in the crude oil; reducing solidifying point of crude oil greatly; forming small wax ball with diameter at 0.03mm in the light component of crude oil.

Description

Technical field: [0001] The invention relates to a chemical agent used for wax prevention in well shafts of thin oil wells, cold transportation of pipelines, decondensation and cold transportation of external transportation pipelines, energy saving and consumption reduction. Background technique: [0002] At present, the types of wax removal and prevention measures for oil wells can be divided into three types: electric heating wax removal, mechanical wax removal, and chemical wax removal and prevention. Electric heating is the most effective measure for wax removal and prevention, but there are disadvantages such as high cost and unsafety; mechanical wax removal is likely to cause problems such as stuck wells and worn oil pipes; most of the organic solvents in chemical wax removers use mixed benzene and wax to remove wax. Light hydrocarbons, wax removal effect is very good. The disadvantages are flammable, explosive, high price, high toxicity, large dosage, and complicated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
Inventor 张洪君郑猛岳志强龙华刘恩宏韦志华闫峰任从军何川
Owner PETROCHINA CO LTD
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