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Method for removing sand from sulfur-bearing oil concentrate in airtight sand removal device

A technology for petroleum and raw liquid, which is used in separation methods, chemical instruments and methods, and purification by filtration methods to achieve the effects of ensuring personal safety, convenient operation and improving filtration efficiency.

Inactive Publication Date: 2015-10-21
CHENGDU GAOPU PETROLEUM ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that there is no equipment suitable for high-sulfur petroleum screening in the prior art, and provide a sulfur-containing petroleum stock solution in a closed sand removal device that is easy to clean, has a good screening effect, and ensures the health of the operator Desanding method

Method used

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  • Method for removing sand from sulfur-bearing oil concentrate in airtight sand removal device
  • Method for removing sand from sulfur-bearing oil concentrate in airtight sand removal device
  • Method for removing sand from sulfur-bearing oil concentrate in airtight sand removal device

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Experimental program
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Effect test

Embodiment 1

[0035] A method for desanding sulfur-containing petroleum stock solution in a closed desanding device, comprising the following steps:

[0036] (1) The sulfur-containing petroleum stock solution enters the filter chamber through the stock solution inlet, and is discharged from the stock solution outlet after continuous filtration through more than two filter chambers;

[0037] (2) The partition of the filter chamber is set on the side wall, and two adjacent filter chambers are connected through the partition, and the top of the partition is inclined 10 to 40 degrees to the direction of the raw liquid inlet. Therefore, after filtering through the partition, the remaining The sand body in the filter chamber falls into the sand body reserved cavity at the bottom of the filter chamber by gravity;

[0038] (3) Observe the accumulation of sand bodies in the sand body reserved cavity. When the height of the sand body accumulation is higher than 1 / 3 of the height of the sand body rese...

Embodiment 2

[0045] The present embodiment optimizes the structure of sand filter 6 on the basis of embodiment 1, as figure 2 and image 3 As shown, the specific settings are as follows:

[0046] The sealed box body 61 is composed of a box body 611 , a box cover 612 arranged at the top of the box body 611 , and a sealing ring 613 installed between the box body 611 and the box cover 612 for sealing.

[0047] The filter screen 62 in the sand receiving filter 6 is arranged in parallel in the sealed box body 61 , and the filter screen 62 divides the sealed box body 61 into more than two filter chambers.

[0048] In this embodiment, the sand that enters the sand receiving filter 6 is filtered and the sand is accumulated in the sand receiving filter 6, and the filtered liquid is returned to the airtight housing 1 through the oil feed port 3 . When the sand body in the sand-connecting filter 6 is accumulated to a certain degree, the whole sand-connecting filter 6 can be replaced, thereby effe...

Embodiment 3

[0050] The present embodiment has optimized the setting of separating net 2 on the basis of embodiment 2, and concrete structure is as follows:

[0051] In this embodiment, the inclination of the spacer 2 is 30 degrees. In the present invention, the solid separated from the petroleum stock solution is taken out by replacing the sand-connecting filter and then filtering the obtained solid.

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Abstract

The invention discloses a method for removing sand from sulfur-bearing oil concentrate in an airtight sand removal device. The method comprises the steps that 1, the sulfur-bearing oil concentrate enters filter chambers through a concentrate inlet and is discharged out of a concentrate outlet after being continuously filtered by the two or more filter chambers; 2, separation meshes of the filter chambers are arranged on the side walls, the two adjacent filter chambers are communicated through the separation meshes, and the top ends of the separation meshes are inclined toward the concentrate inlet by 10-40 degrees; 3, the stacking conditions of sand in sand reserving cavities are observed, and when the height of stacked sand is larger than 1 / 3 of the height of the sand reserving cavities, valves on discharging openings in the bottom ends of the sand reserving cavities are opened, and sand left in the sand reserving cavities and oil concentrate are made to enter sand collecting filters; 4, liquid obtained through filtering of the sand collecting filters is discharged out of the concentrate outlet, and solids obtained through filtering are stored in the sand collecting filters. The method has the advantages that the sand content of oil is reduced, the physical health of operators is guaranteed, and the cost is low.

Description

technical field [0001] The invention relates to a petroleum desanding device, in particular to a desanding method for sulfur-containing petroleum stock solution in a closed desanding device. Background technique [0002] The main function of the oil screen is to prevent sand. Due to the geology of the oil well and the different sand layers, the steel grades and types of the pipes used are different. [0003] In oil drilling and production operations, screen pipe is an important equipment, and it is often used for pre-completion or oil production for sand control. At present, the most widely used screen is the wire-wrapped screen. The manufacturing method of this kind of screen pipe is: winding a steel wire of a certain cross-section on the metal liner pipe evenly distributed on the surrounding screen rods or openings and welding it firmly, and leaving a certain gap as a screen hole. Although this manufacturing method has been used by many manufacturers in China, there are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G31/09B01D29/03B01D29/56
Inventor 周斌
Owner CHENGDU GAOPU PETROLEUM ENG TECH