CN210434130U

CN210434130U - Integrated sand remover

Info

Publication number: CN210434130U
Application number: CN201920797121.1U
Authority: CN
Inventors: 史吏
Original assignee: Jiangsu Yizhong Petroleum Equipment Co ltd
Current assignee: Jiangsu Yizhong Petroleum Equipment Co ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-05-01
Anticipated expiration: 2029-05-30

Abstract

The utility model relates to an oil field fluid degritting technical field just discloses an integral type desander, the novel nipple rectifier comprises a cylindrical shel, the top of barrel is whirl functional part, and the bottom divide into filter screen functional part, and its whirl degritting part and filter screen degritting part formula as an organic whole set up, barrel top whirl degritting part conventionality is provided with the vortex export, close the whirl function and open the filter screen function and switch through closing valve I and opening valve II, barrel bottom filter screen degritting part conventionality is provided with the filter screen export, close the filter screen function and open the whirl function and switch through closing valve II and opening valve I. According to the viscous state of the fluid, the valve I or the valve II is installed at the outlet of the filter screen or the rotational flow outlet, so that different sand removing functions of equipment are selected, different working conditions of oilfield operation are adapted, sand removing operation is performed according to the state of well fluid in the fastest time, and the sand removing efficiency is improved.

Description

Integrated sand remover

Technical Field

The utility model relates to an oil field fluid desanding technical field specifically is an integral type desander.

Background

The sand remover is a device for separating foreign particles from oil-gas water or wastewater water flow, is widely applied in the field of oil field drilling, and two common sand removers are a cyclone sand remover and a filter screen type sand remover;

the principle of the cyclone desander is as follows: the fluid enters the desander along the tangential direction, the sand has high specific gravity and can move downwards along the inner wall of the rotational flow inner cylinder, and other fluids have low specific gravity and directly enter the central pipe to be discharged out of the desander (refer to the attached figure 1 in the specification); the principle of the screen type desander is as follows: with the double-cylinder structure, after the fluid enters, as long as the sand is larger than the size of the filter screen, the sand is left in the filter screen, so as to achieve the aim of sand removal (refer to the attached figure 2 in the specification).

The prior screen-type desander and the rotational flow-type desander are two pieces of equipment, and the screen-type desander is easy to block a filter screen when viscous liquid is treated, so that the equipment is damaged; the sand removing efficiency of the rotational flow type sand remover is greatly different under different well conditions; at present, production increasing measures such as hydraulic fracturing are needed in oil field development, a propping agent at the rear part of fracturing is discharged along with fracturing fluid (viscous liquid), and formation fluid is discharged after the fracturing fluid is discharged.

SUMMERY OF THE UTILITY MODEL

Not enough to above-mentioned background art, the utility model provides an integral type desander possesses the desander that can choose the different grade type for use fast according to well liquid state, arranges that area is little, advantage such as with low costs, has solved the problem that the background art provided.

The utility model provides a following technical scheme: an integrated sand remover comprises a barrel, wherein the top of the barrel is a rotational flow functional part, the bottom of the barrel is a filter screen functional part, the rotational flow sand removing part and the filter screen sand removing part are arranged integrally, a top cover is fixedly arranged at the top of the barrel, a well flow inlet pipe is fixedly communicated in the tangential direction of the top of one side of the barrel, a central pipe is fixedly arranged at the top of an inner cavity of the barrel, a sand discharge pipe is fixedly communicated at the bottom of the barrel, a sand washing pipe is fixedly communicated with one side of the sand discharge pipe, a control valve is communicated with one side of the sand discharge pipe, a rotational flow inner barrel is fixedly arranged in the middle of the inner cavity of the barrel, a filter screen is arranged at the bottom of the rotational flow inner barrel, the bottom of the filter screen is communicated with one end of the sand discharge pipe, a rotational flow outlet is conventionally arranged at the rotational flow sand removing part at the top of the barrel, the barrel bottom filter screen desanding part is conventionally provided with a filter screen outlet, and the filter screen closing function and the rotational flow opening function are switched by closing the valve II and opening the valve I.

Preferably, the cyclone inner cylinder is horn-shaped hollow, and the cyclone inner cylinder is communicated with the filter screen, and the top of the cyclone inner cylinder is attached to the inner wall of the cylinder body.

Preferably, the number of the cylinders is two, and the well flow inlet pipes on the two cylinders are communicated with the same fluid inlet.

The utility model discloses possess following beneficial effect:

1. this integral type desander according to the thick state of gluing of well fluid, through valve I or valve II of installation whirl export or filter screen export to the different desanding function of selection equipment, its different operating modes that adapt to oilfield operation carry out the desanding operation to the state of well fluid in the fastest time, have improved the efficiency of desanding, also can prevent simultaneously that equipment from blockking up.

2. This integral type desander through combining whirl and filter screen dual mode, compares and separately sets up in two kinds of current equipment, and its equipment volume of this technical scheme itself reduces relatively, and area obtains optimizing, and the cost obtains optimizing, and the sand body volume of its equipment obtains promoting as unilateral function operation simultaneously.

3. This integral type desander adopts binocular parallel connection design, can not interrupt equipment desanding process when equipment is maintained for desanding process can continuous operation, has further improved desanding efficiency.

Drawings

FIG. 1 is a schematic diagram of a conventional cyclone-type grit catcher;

FIG. 2 is a schematic diagram of a conventional screen-type sand remover;

FIG. 3 is a schematic structural view of the present invention;

fig. 4 is a cross-sectional view taken along line a-a of fig. 3 according to the present invention.

In the figure: 1. a barrel; 2. a top cover; 3. a well flow inlet pipe; 4. a central tube; 5. a sand discharge pipe; 6. washing the sand pipe; 7. a rotational flow inner cylinder; 8. filtering with a screen; 9. a swirl outlet; 10. a valve I; 11. a water outlet pipe at the filter screen opening; 12. and a valve II.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 3 and 4, an integrated desander comprises a barrel body 1, wherein the top of the barrel body 1 is a cyclone functional part, the bottom of the barrel body 1 is a filter screen functional part, the cyclone desanding part and the filter screen desanding part are integrally arranged, a cyclone outlet 9 is conventionally arranged on the cyclone desanding part on the top of the barrel body 1, the cyclone closing function and the filter screen opening function are switched by closing a valve I10 and opening a valve II 12, a filter screen outlet 11 is conventionally arranged on the filter screen desanding part on the bottom of the barrel body 1, the filter screen closing function and the cyclone opening function are switched by closing the valve II 12 and opening the valve I10, and the valve I10 and the valve II 12 are manually controlled in the technical scheme;

the top of the barrel body 1 is fixedly provided with a top cover 2, a well flow inlet pipe 3 is fixedly communicated in the tangential direction of the top of one side of the barrel body 1, the top of the inner cavity of the barrel body 1 is fixedly provided with a central pipe 4, the bottom of the barrel body 1 is fixedly communicated with a sand discharge pipe 5, one side of the sand discharge pipe 5 is fixedly communicated with a sand washing pipe 6, one side of the sand discharge pipe 5 is communicated with a control valve, the middle of the inner cavity of the barrel body 1 is fixedly provided with a rotational flow inner barrel 7, the bottom of the rotational flow inner barrel 7 is connected with a filter screen 8, and the bottom of the filter screen;

the cyclone inner cylinder 7 is horn-shaped hollow, the cyclone inner cylinder 7 is communicated with the filter screen 8, the top of the cyclone inner cylinder 7 is attached to the inner wall of the cylinder 1, well flow after cyclone flow can be conveniently converged into the filter screen 8 for filtering, meanwhile, well liquid enters the filter screen 8 in a Chinese-style spiral mode, the filtering effect is better than that of vertical entering;

the device comprises a plurality of cylinders 1, well flow inlet pipes 3 on the two cylinders 1 are communicated with the output end of the same well fluid transmission device, and a double-cylinder parallel design, one working cylinder and one standby cylinder are adopted, so that sand removal of the device cannot be interrupted during maintenance.

The working principle of the embodiment is as follows:

when the viscosity of well fluid is low (a filtering type desanding function is adopted), a valve I10 is closed (a sand discharge pipe 5 and a flushing water inlet pipe 6 are in a blocking state in sequence), a valve II 12 is opened, well fluid is injected into the barrel body 1 from a well fluid inlet pipe 3 through the output end of equipment and is collected to the cyclone inner barrel 7 in a spiral shape, the well fluid continuously passes through a filter screen 8, sand particles are larger than the diameter of the filter screen 8 and are retained in the filter screen 8, oil (gas and water) flows to the outside of the filter screen 8 and is discharged through a filter screen port water outlet pipe 11, and desanding is completed;

when the viscosity of well fluid is higher (adopt spiral-flow type desanding function), close valve II 12 (sand discharge pipe 5 and sparge water inlet tube 6 are in the shutoff state in succession), open valve I10, the well flow is followed the well flow inlet tube 3 input, along the inside of tangential entering barrel 1, the proportion ratio of grit is great, along the inner wall downstream of barrel 1, gather in the bottom of barrel 1, during the little oil gas water of proportion gets into center tube 4, upward movement discharges through whirl outlet 9, accomplishes the desanding.

When the accumulated sand in the filter screen 8 is full, the well flow inlet is switched to another spare cylinder at the well flow inlet pipe 3 (the spare cylinder is converted into the working cylinder at the moment, and the working cylinder is converted into the spare cylinder), the top cover 2 is opened at the moment, the pressure is relieved, the filter screen 8 of the spare cylinder after conversion is taken out, the sand in the spare cylinder is removed, and the spare cylinder after conversion is put into the spare cylinder for standby (by analogy, when the sand in the spare cylinder after conversion is full, the spare cylinder after conversion is removed by adopting the same method).

When the filter screen 8 is blocked, the rotational flow outlet 9, the filter screen port water outlet pipe 11 and the sand discharge pipe 5 are blocked, clear water is injected from the flushing water inlet pipe 6 until the inner wall of the barrel 1 and the filter screen 8 are flushed by filling water in the barrel 1, after flushing is finished, a valve on the sand discharge pipe 5 is opened, and cleaning liquid is discharged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an integral type desander, includes barrel (1), its characterized in that: the top of the barrel (1) is a rotational flow functional part, the bottom of the barrel is divided into a filter screen functional part, the rotational flow desanding part and the filter screen desanding part are integrally arranged, a top cover (2) is fixedly arranged at the top of the barrel (1), a well flow inlet pipe (3) is fixedly communicated in the tangential direction of the top of one side of the barrel (1), a central pipe (4) is fixedly arranged at the top of the inner cavity of the barrel (1), a sand discharge pipe (5) is fixedly communicated with the bottom of the barrel (1), a sand flushing pipe (6) is fixedly communicated with one side of the sand discharge pipe (5), a control valve is communicated with one side of the sand discharge pipe (5), a rotational flow inner barrel (7) is fixedly arranged in the middle of the inner cavity of the barrel (1), a filter screen (8) is arranged at the bottom of the rotational flow inner barrel (7), the bottom of the filter screen (8) is communicated with one end of the rotational flow outlet (5), and a rotational flow outlet (, close the whirl function and open the filter screen function and switch through closing valve I (10) and opening valve II (12), barrel (1) bottom filter screen degritting part conventionality is provided with filter screen export (11), closes the filter screen function and opens the whirl function and switch through closing valve II (12) and opening valve I (10).

2. An integrated grit catcher as claimed in claim 1, wherein: the cyclone inner barrel (7) is horn-shaped hollow, the cyclone inner barrel (7) is communicated with the filter screen (8), and the top of the cyclone inner barrel (7) is attached to the inner wall of the barrel body (1).

3. An integrated grit catcher as claimed in claim 1, wherein: the number of the cylinder bodies (1) is two, and the well flow inlet pipes (3) on the two cylinder bodies (1) are connected in parallel to form a fluid inlet.