On-line sand removing and washing out device for crude oil

Abstract

The invention relates to an on-line sand removing and washing out device for crude oil. The on-line sand removing and washing out device comprises a sand remover, a sand washing-out device, a solid-liquid cyclone separator, a collecting chamber, and a jet pump, and is suitable for removing sand from a crude oil transportation pipeline. The sand remover can discharge the sand in the crude oil passing through the pipeline from the top pipeline; the sand washing-out device can separate the oil sand discharged by the sand remover. According to technology disclosed by the invention, the oil sand can be transported, separated and conveyed outside, and further circularly cleaned; compared with the conventional technology, the technology is good in treatment effect, and can be used for quickly and efficiently transporting the oil sand; meanwhile, the whole sand removing system is free of a motion component, and compact in structure; the on-line sand removing and washing out device can solve the problem that the crude oil contains sand in the crude oil on-line transportation process, avoids the safety problem caused by the fact that crude oil contains sand to the subsequent process, realizes continuous production, and achieves a higher automation level.

Description

technical field

[0001] The invention relates to the field of crude oil cleaning, in particular to an online crude oil sand removal and sand washing equipment. Background technique

[0002] In the process of oil extraction, due to the high viscosity of crude oil, it is inevitable that some fine sand will enter the ground gathering and transportation system. When the crude oil enters the storage tank, the fine sand in the crude oil will slowly deposit into the tank under low flow conditions. bottom. After a long time, the volume ratio of the tank is getting lower and lower, so it has to be cleaned. The traditional cleaning method is mainly to manually enter the tank body after the sand is deposited on the bottom of the tank for cleaning, which is not only time-consuming and laborious, but also has safety problems. Contents of the invention

[0003] In view of the deficiencies in the above problems, the present invention provides an on-line sand removal and sand washing equ...

Examples

Embodiment Construction

[0014] One end of the oil inlet of the desander is placed on the crude oil pipeline, the lower end discharges oily oil sand, and the upper end discharges crude oil. During pipeline oil transportation, due to its high internal operating pressure, the oil sand sucked by the desander can be directly transported to the solid-liquid cyclone separator at the top of the sand washing device.

[0015] When the collection chamber at the bottom of the sand washer is full of oil sand, the desand removal system stops the transportation of oil sand, and the sand washer opens the valve at the bottom of the equipment to start the oil sand cleaning mode.

[0016] In order to thoroughly clean the oil sand, a circulation line and a desander installed at the bottom of the sand washer vessel are used to recirculate the oil sand solids in the collection chamber, wherein the circulation line runs from the bottom of the sand washer vessel to the solid-liquid cyclone separation The feed port of the de...

technical field

[0001] The invention relates to the field of crude oil cleaning, in particular to an online crude oil sand removal and sand washing equipment. Background technique

[0002] In the process of oil extraction, due to the high viscosity of crude oil, it is inevitable that some fine sand will enter the ground gathering and transportation system. When the crude oil enters the storage tank, the fine sand in the crude oil will slowly deposit into the tank under low flow conditions. bottom. After a long time, the volume ratio of the tank is getting lower and lower, so it has to be cleaned. The traditional cleaning method is mainly to manually enter the tank body after the sand is deposited on the bottom of the tank for cleaning, which is not only time-consuming and laborious, but also has safety problems. Contents of the invention

[0003] In view of the deficiencies in the above problems, the present invention provides an on-line sand removal and sand washing equ...

Examples

Embodiment Construction

[0014] One end of the oil inlet of the desander is placed on the crude oil pipeline, the lower end discharges oily oil sand, and the upper end discharges crude oil. During pipeline oil transportation, due to its high internal operating pressure, the oil sand sucked by the desander can be directly transported to the solid-liquid cyclone separator at the top of the sand washing device.

[0015] When the collection chamber at the bottom of the sand washer is full of oil sand, the desand removal system stops the transportation of oil sand, and the sand washer opens the valve at the bottom of the equipment to start the oil sand cleaning mode.

[0016] In order to thoroughly clean the oil sand, a circulation line and a desander installed at the bottom of the sand washer vessel are used to recirculate the oil sand solids in the collection chamber, wherein the circulation line runs from the bottom of the sand washer vessel to the solid-liquid cyclone separation The feed port of the de...

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