Efficient oil well paraffin remover

A wax remover and technology for oil wells, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of poor fluidity at low temperature, reduced flow area, slow wax removal speed, etc., so as to achieve difficult separation and reduce stacking The effect of squeezing and increasing density

Inactive Publication Date: 2019-06-18
杭州攻守道贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a high-efficiency oil well wax remover for the problems of poor low-temperature fluidity and slow wax removal speed of commonly used oil well wax removers, which often lead to reduced flow area and oil pipe wax plugging

Method used

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  • Efficient oil well paraffin remover

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preparation example Construction

[0031] The preparation method of composite wax-removing base-material comprises the steps:

[0032] (1) Mix diatomite, reagent A, and fatty alcohol polyoxyethylene ether in a reactor at 30~55°C according to a mass ratio of 5:8~14:1, and stir magnetically at 500~800r / min for 40~60min. Raise the temperature to 70~90°C and keep it warm for 1~3h, evaporate under reduced pressure to 20~35% of the original volume to obtain pretreated diatomite, and take epoxy resin and nitrile rubber according to the mass ratio of 5~8:1:3:1 , talcum powder, and ball milling medium are mixed in a ball mill tank, and mixed with zirconia ball mill beads according to the mass ratio of ball to material 20~30:1, and ball milled at 350~550r / min for 1~3h to obtain a ball mill, which is taken at a mass ratio of 7 ~12:1:5 Add additives, pretreatment diatomite and mix, stir with 800~1200r / min magnetic force for 35~60min to get the base material;

[0033] (2) Mix the base material, lecithin and reagent B accor...

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Abstract

The invention discloses an efficient oil well paraffin remover, and belongs to the technical field of oilfield exploitation. Hydrophilic components such as mercaptoethanol are led in and matched to form a water protective film, hydration and lubrication properties of oil paraffin are improved, paraffin dispersion effects are improved, entanglement among a hole structure formed in the preparation process and components such as composite paraffin removal basic materials and composite accessories is achieved, affinity effects on the paraffin in using is improved, and paraffin removal effects areimproved. Added phospholipid has good emulsification functions, so that polar groups in components can extend into the paraffin, phospholipid molecules have more negative charges, local charges can beunbalanced and excluded each other, a blocking structure formed by paraffin accumulation in an oil well is broken, an open area cannot be reduced, an oil pipe cannot be blocked by the paraffin, and dredging effects are improved. The paraffin remover solves the problems that a current frequently-used paraffin remover has low liquidity at low temperature, paraffin remover speed is low, the open area is reduced, and the oil pipe is blocked by the paraffin.

Description

technical field [0001] The invention belongs to the technical field of oilfield exploitation, and in particular relates to a high-efficiency wax remover for oil wells. Background technique [0002] Crude oil contains a certain amount of wax, which usually exists in a dissolved state in the formation. However, in the process of crude oil extraction, the temperature and pressure are continuously reduced. When the temperature and pressure drop to a certain value, the wax dissolved in the crude oil will start to precipitate. As the pressure and temperature continue to decrease and the light components continue to overflow, the wax in the crude oil will continue to precipitate, crystallize, grow, gather, and deposit on the surface of the sucker rod and the inner wall of the tubing. [0003] The paraffin deposited in the oil well pipe string and the surface oil gathering pipeline will reduce the effective cross-sectional area of ​​the pipeline or even block it, resulting in a dec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
Inventor 刘沁
Owner 杭州攻守道贸易有限公司
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