CN200989196Y - Petroleum sand preventing device - Google Patents

Abstract

The utility model relates to a petroleum sand control device, which includes an outer pipe with an oil inlet hole on the pipe wall, and is characterized in that it also includes a sand retaining pipe arranged in the outer pipe, and there are seepage pipes densely distributed in the pipe wall of the sand retaining pipe The channels of oil holes and oil seepage holes are in irregular curved shape. The sand retaining pipe includes multiple short pipes, and the short pipes are inserted into each other. The utility model sets a sand-retaining pipe with oil seepage holes in the outer pipe, which is acid-resistant, alkali-resistant, high-temperature resistant, low in cost, long in service life, good in sand control effect, high in permeability, and greatly improves production efficiency.

Description

Oil sand control device

technical field

The utility model relates to an oil collection device, in particular to an oil sand control device.

Background technique

In order to prevent debris such as sand and dust from entering the oil, sand traps are used to filter sand and dust when pumping oil in downhole operations in petroleum oil fields. There are two main types of traditional sand stoppers, namely, polyethylene filter screen sand stoppers and stainless steel wire-wrapped sand stoppers. These two kinds of sand retainers all have the following deficiencies: poor corrosion resistance such as acid and alkali resistance, poor filtering effect, low service life, too much labor intensity for workers, and high cost.

Contents of the invention

The purpose of the utility model is to provide a petroleum sand control device with strong corrosion resistance, good sand control effect and low cost.

In order to achieve the above object, the utility model adopts the following technical solutions:

The petroleum sand control device described in the utility model includes an outer pipe with an oil inlet hole on the pipe wall, and is characterized in that it also includes a sand retaining pipe arranged in the outer pipe, and there are seepage pipes densely distributed in the pipe wall of the sand retaining pipe. The channels of oil holes and oil seepage holes are in irregular curved shape.

The sand retaining pipe includes multiple short pipes, and the short pipes are inserted into each other.

The utility model sets a sand-retaining pipe with oil seepage holes in the outer pipe, which is acid-resistant, alkali-resistant, high-temperature resistant, low in cost, long in service life, good in sand-controlling effect, high in permeability, and greatly improves production efficiency; The sand tube has poor lipophilicity, which avoids the blockage of the circulation channel.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is a structural schematic diagram of the sand retaining pipe in the utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

An oil sand control device, as shown in FIG. 1 , is a petroleum sand control device, which includes an outer pipe 1 with an oil inlet hole 2 on the pipe wall and a sand retaining pipe 3 arranged inside the outer pipe 1 . The sand retaining pipe 3 is made of ultrafine powder at high temperature to form microporous particles with a certain degree of sphericity and a certain strength. These microporous particles are sintered at a certain temperature and pressure according to the requirements of sand control equipment to form fine pores and permeability. These fine pores are densely distributed in the wall of the sand retaining pipe 3 in an irregular curved shape, which are the oil seepage holes 4 .

In this embodiment, as shown in FIG. 2 , the sand control pipe 3 includes a plurality of short pipes, and the short pipes are inserted into each other, which is convenient for installation and operation.

In the utility model, a sand retaining pipe 3 with oil seepage holes 4 densely distributed on the pipe wall is arranged in the outer pipe 1, which is resistant to acid, alkali, high temperature, low cost, good sand control effect and high permeability. When the crude oil enters the outer pipe 1 from the oil inlet hole 2, it will still carry impurities such as sand and dust, and then through the filtration of the sand retaining pipe 3, the sand and dust and other impurities will be blocked outside the sand retaining pipe 3, while the crude oil will pass through the oil seepage hole 4 enters the sand retaining pipe 3 and is pumped to the ground by the oil pump.

Claims (2)

1, a kind of sand-preventing petroleum device, comprising the outer tube that has fuel feed hole (2) on the tube wall (1), it is characterized in that: it also comprises the sand retention pipe (3) that is arranged in the outer tube (1), is densely covered with oil seepage hole (4) in the tube wall of retaining sand tube (3), and the duct of oil seepage hole (4) is irregular curved shape.

2, sand-preventing petroleum device according to claim 1 is characterized in that: described sand retention pipe (3) comprises the more piece short tube, pegs graft mutually between the short tube.

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