CN209780804U - solid-liquid separation and vibration liquid-removing and drying integrated device - Google Patents

Abstract

The utility model provides a dry integrated device of solid-liquid separation and vibration liquid removal, collect storehouse, screen cloth, push-pull valve including liquid phase collection storehouse, drilling fluid circulation jar, shale shaker, sucking disc, feed liquor pipe, tee bend, vacuum pump, control valve, drain pipe, baffle, drill chip. The device adopts the mechanical vibration and vacuum adsorption principle, so that the solid-liquid mixture returning from the bottom of the well is subjected to solid-liquid separation, liquid removal and drying by the vibrating screen, the solid-phase water content is reduced, the requirement of rock debris hauling is met, the environmental pollution caused by waste generated in the drilling process is effectively reduced, and the recovered drilling fluid is collected into a drilling fluid circulating tank for recycling. The advantages are that: the structure is simple, the energy consumption is low, the use is convenient, the installation is rapid, the reliability of the equipment is high, the manufacturing cost is low, and the occupied area is small; the water content of the treated drill cuttings does not exceed 60 percent, and the requirement of drill cuttings on hauling is met; the system is used for the solid phase control and non-landing integrated treatment system of the drilling fluid, and simplifies the system constitution.

Description

Solid-liquid separation and vibration liquid-removing and drying integrated device

Technical Field

the utility model belongs to the technical field of the oil drilling equipment technique and specifically relates to a solid-liquid separation and dry integrated device of vibration liquid that takes off who is applicable to drilling fluid solid phase control and not fall to the ground integration processing system.

Background

Along with the increasing of the depth, difficulty and complexity of petroleum exploration and development, the requirements on safety, environmental protection and health management are more and more strict, the requirements on solid phase control and environmental protection treatment of drilling fluid are more and more high, the drilling fluid and waste drill cuttings are required to be prevented from falling to the ground in the whole drilling section process, the drill cuttings separated in the solid phase control process of the drilling fluid need to be collected and transported away from a well site, the environmental pollution caused by waste generated in the drilling process is effectively reduced, and the reduction and prevention of the waste drilling fluid and the drill cuttings in the drilling process are realized.

At present, most of first-stage solid-liquid separation equipment in a solid control system for a drilling crew is three-mesh vibrating screens, only primary solid-liquid separation is carried out on a mixture of solids and liquids returning from a shaft, the separation capability is weak, particularly, screening and slurry leakage are easy to occur under the condition that the discharge capacity of a drilling pump of an upper stratum is large, water content of drill cuttings discharged after the solid-liquid separation of the vibrating screens cannot meet the requirement of drill cuttings hauling, and a set of vibrating screens or a plurality of sets of equipment are required to be connected in series to carry out liquid removal and drying treatment on the discharged drill cuttings, so that a drilling fluid solid-phase control and non-landing treatment system is huge, complex, large in occupied area, high in manufacturing cost and high in. In order to simplify the system, reduce cost and energy consumption, realize drilling fluid solid phase control and not fall to the ground integrated processing, need adopt a solid-liquid separation and dry integrated device of vibration liquid removal, wherein the shale shaker adopts 5 board-like screen meshes, first 3 screen meshes function is to carrying out solid-liquid separation to the solid-liquid mixture that returns on the pit shaft, the drilling cuttings that separates out on last three screen meshes of last 2 screen meshes realize the drilling cuttings liquid removal and dry under vibration liquid removal and vacuum adsorption combined action, the drilling fluid rate of recovery is showing and is improving, also make the drilling cuttings moisture content of final discharge greatly reduced, be convenient for collect the transportation, the shale shaker can not appear "run thick liquid", "paste the screen mesh" and "run out the weeping" phenomenon in the use yet.

Disclosure of Invention

The utility model aims at simplifying solid accuse system, reduce cost and energy consumption realize drilling fluid solid phase control and do not fall to the ground the integration and handle, for the oil drilling field provides a solid-liquid separation and vibration takes off dry integrated device of liquid, realizes that drilling fluid purifies, solid-liquid separation and drill chip concentration take off the liquid drying in step.

In order to solve the above problems, the technical solution of the present invention is: a solid-liquid separation and vibration liquid-removing drying integrated device. The drilling fluid circulation device mainly comprises a liquid phase collection bin, a drilling fluid circulation tank, a vibrating screen, a sucker, a liquid inlet pipe, a tee joint, a vacuum pump, a control valve, a liquid outlet pipe, a partition plate, a drilling cutting collection bin, a screen and a gate valve.

The vibrating screen is installed on the tank surface of the drilling fluid circulation tank by adopting a vibrating screen with two-stage plate type screen meshes, the lower part of the first-stage screen mesh is directly communicated with the drilling fluid circulation tank, the second-stage screen mesh is close to a slag discharge port, a sucker is installed below the second-stage screen mesh, and the sucker and the screen meshes are installed in a sealing mode. The bottom of the sucker is connected with the inlet of a vacuum pump through a liquid inlet pipe, the outlet of the vacuum pump is connected with a liquid outlet pipe, and a drilling fluid circulating tank is arranged below the liquid outlet pipe. The number of the screens is five, wherein the number of the first stage screens is three, and the number of the second stage screens is two.

The drilling fluid circulating tank body is divided into two liquid phase collecting bins, namely a first liquid phase collecting bin and a second liquid phase collecting bin, the first liquid phase collecting bin is arranged below a first-stage screen of the vibrating screen, and the second liquid phase collecting bin is arranged below the liquid outlet pipe; a partition board is arranged between the first liquid phase collecting bin and the second liquid phase collecting bin.

The partition board is provided with a gate valve for controlling the liquid flow between the first liquid phase collection bin and the second liquid phase collection bin. The liquid inlet pipe is connected with a vacuum pump through a tee joint. The control valve is arranged at the liquid outlet of the vacuum pump 7.

The vibrating screen adopts five screen meshes, wherein three screen meshes close to the slurry inlet are used for carrying out solid-liquid separation and purification on a solid-liquid mixture returning from the bottom of the well, two screen meshes close to the slag outlet are used for concentrating, dehydrating and drying drill cuttings, vacuum suckers are installed on the lower portions of the two screen meshes close to the slag outlet, the drill cuttings are efficiently dehydrated and dried under the combined action of mechanical vibration and vacuum adsorption, the discharged drill cuttings meet the requirements of truck-mounted pulling and transportation, the processed drill cuttings are collected in a drill cuttings collection bin, and the recovered drilling fluid is returned to the drilling fluid circulation tank to be continuously reused.

Compared with the prior art, the beneficial effects of the utility model are that:

1. The drilling fluid concentration and liquid removal integrated process is realized while the requirements of solid-liquid separation and purification of the drilling fluid are met;

2. The device has the advantages of simple structure, convenient use, quick installation, good reliability, low manufacturing cost and low energy consumption;

3. The recovery rate of the drilling fluid is high, the water content of the treated drilling cuttings is low and is not more than 60%, and the requirement of hauling is met;

4. The system is used for the solid phase control and non-landing integrated treatment system of the drilling fluid, and the system composition is simplified;

5. Due to the adoption of the vibrating screen with 5 screens, the screen with a higher mesh number can be used, and the handling capacity of the vibrating screen is further improved, so that the vibrating screen has a better drilling fluid purifying effect.

Drawings

FIG. 1 is a front view of an integrated solid-liquid separation and vibration liquid-removing and drying device of the present invention;

Fig. 2 is the left view of the integrated device for solid-liquid separation and vibration liquid-removing and drying of the utility model.

Reference numerals: 1-a first liquid phase collection bin, 2-a drilling fluid circulation tank, 3-a vibrating screen, 4-a sucker, 5-a liquid inlet pipe, 6-a tee joint, 7-a vacuum pump, 8-a control valve, 9-a liquid outlet pipe, 10-a second liquid phase collection bin, 11-a partition plate, 12-a drilling cuttings collection bin, 13-a screen and 14-a gate valve.

Detailed Description

the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the solid-liquid separation and vibration liquid removal and drying integrated device comprises a first liquid phase collection bin 1, a drilling fluid circulation tank 2, a vibrating screen 3, a sucker 4, a liquid inlet pipe 5, a tee joint 6, a vacuum pump 7, a control valve 8, a liquid outlet pipe 9, a first liquid phase collection bin 1, a second liquid phase collection bin 10, a partition plate 11, a drilling cuttings collection bin 12, a screen 13 and a gate valve 14.

the vibrating screen 3 is characterized in that the vibrating screen 3 with two stages of plate type screen meshes 13 is arranged on the tank surface of the drilling fluid circulation tank 2, the drilling fluid circulation tank 2 is directly communicated below the first stage screen meshes 13, the second stage screen meshes 13 are close to a slag discharge port, the suckers 4 are arranged below the second stage screen meshes 13, and the suckers 4 and the screen meshes 13 are arranged in a sealing mode. The bottom of the sucker 4 is connected with the inlet of a vacuum pump 7 through a liquid inlet pipe 5, the outlet of the vacuum pump 7 is connected with a liquid outlet pipe 9, and a drilling fluid circulating tank 2 is arranged below the liquid outlet pipe 9. The number of the screens 13 is five, wherein the number of the first stage screens 13 is three, and the number of the second stage screens 13 is two.

The drilling fluid circulating tank 2 is divided into two liquid phase collecting bins, namely a first liquid phase collecting bin 1 and a second liquid phase collecting bin 10 of the first liquid phase collecting bin 1, the first liquid phase collecting bin 1 is arranged below a first-stage screen 13 of the vibrating screen 3, and the second liquid phase collecting bin 10 of the first liquid phase collecting bin 1 is arranged below a liquid outlet pipe 9; a partition plate 11 is arranged between the first liquid phase collecting bin 1 and the second liquid phase collecting bin 10 of the first liquid phase collecting bin 1.

The partition plate 11 is provided with a gate valve 14 for controlling the liquid flow between the first liquid phase collection bin 1 and the second liquid phase collection bin 10 of the first liquid phase collection bin 1. The liquid inlet pipe 5 is connected with a vacuum pump 7 through a tee joint 6. The control valve 8 is installed at the outlet of the vacuum pump 7.

The working principle is as follows: the vibrating screen 3 adopts five screens, under the action of mechanical vibration, three screens 13 close to the slurry inlet perform solid-liquid separation and purification on a solid-liquid mixture returning from the bottom of the well, and two screens 13 close to the slag discharge port perform concentration, liquid removal and drying on drill cuttings under the combined action of mechanical vibration and vacuum adsorption, so that the water content is further reduced, and the recovery and utilization rate of the drilling fluid is improved.

Solid-liquid mixture that returns upward in the well casing among the drilling process gets into shale shaker 3, and under mechanical vibration's effect, three screen cloth 13 that are close to the admission mouth carry out solid-liquid separation and drilling fluid purification to solid-liquid mixture, and the liquid after the separation gets into first liquid phase collecting bin 1, and the drill chip after the separation directly gets into two screen cloth 13 that are close to the row cinder notch and carries out the dehydration and dry: at the moment, the control valve 8 is closed, the vacuum pump 7 is started, under the action of the vacuum pump 7, air pressure difference is formed between the sucker 4 and the screen cloth 2, the drill cuttings on the screen cloth 13 are subjected to mechanical vibration generated by the vibrating screen 3 and vacuum adsorption generated by the vacuum pump 7, under the combined action of the mechanical vibration and the vacuum adsorption, the drill cuttings are efficiently concentrated, dewatered and dried, the water content of the drill cuttings after dewatering is lower, the drill cuttings are directly discharged into the drill cuttings collecting bin 12, after a certain amount of separated liquid reaches a certain height, the control valve 8 is automatically opened, the recycled liquid is discharged into the first liquid phase collecting bin 1 and the second liquid phase collecting bin 10, and the recycled liquid enters the solid control system to be recycled.

The drilling fluid in the first liquid phase collection bin 1 flows to the second liquid phase collection bin 10 of the first liquid phase collection bin 1 through a gate valve 14 on a partition plate 11, and the drilling fluid in the second liquid phase collection bin 10 of the first liquid phase collection bin 1 enters the next-stage solid-liquid separation equipment for further solid-liquid separation.

The advantages are that: the device has the advantages of simple structure, convenient use, quick installation, high reliability, low manufacturing cost and low energy consumption; the water content of the treated drill cuttings is not more than 60 percent, the requirement of the drill cuttings on hauling is met, and the recovery rate of the drilling fluid is improved; the system is used for the solid phase control and non-landing integrated treatment system of the drilling fluid, and simplifies the system constitution.

Claims (7)

1. The utility model provides a dry integrated device of solid-liquid separation and vibration liquid-removing, includes that storehouse (1), drilling fluid circulating tank (2), shale shaker (3), drill chip collection storehouse (12), its characterized in that are collected to first liquid phase: the device also comprises a sucker (4), a liquid inlet pipe (5), a vacuum pump (7), a liquid outlet pipe (9) and a screen (13); the vibrating screen (3) adopts two-stage plate type screen meshes (13), the vibrating screen (3) is arranged on the tank surface of the drilling fluid circulating tank (2), the drilling fluid circulating tank (2) is directly communicated below the first-stage screen mesh (13), the second-stage screen mesh (13) is close to a slag discharge port, and a sucker (4) is arranged below the second-stage screen mesh; the bottom of the sucker (4) is connected with the inlet of a vacuum pump (7) through a liquid inlet pipe (5), the outlet of the vacuum pump (7) is connected with a liquid outlet pipe (9), and a drilling fluid circulating tank (2) is arranged below the liquid outlet pipe (9).

2. The integrated device of solid-liquid separation and vibration liquid-removing drying as claimed in claim 1, wherein: the number of the screens (13) is five, wherein the number of the first stage screens (13) is three, and the number of the second stage screens (13) is two.

3. the integrated device of solid-liquid separation and vibration liquid-removing drying as claimed in claim 1 or 2, wherein: also comprises a clapboard (11); the drilling fluid circulating tank (2) is divided into two liquid phase collecting bins, namely a first liquid phase collecting bin (1) and a second liquid phase collecting bin (10), wherein the first liquid phase collecting bin (1) is arranged below a first-stage screen (13) of the vibrating screen (3), and the second liquid phase collecting bin (10) is arranged below a liquid outlet pipe (9); a partition plate (11) is arranged between the first liquid phase collecting bin (1) and the second liquid phase collecting bin (10).

4. The integrated device of solid-liquid separation and vibration liquid-removing drying as claimed in claim 3, wherein: and a gate valve (14) is also arranged on the partition plate (11) to control the liquid flow between the first liquid phase collection bin (1) and the second liquid phase collection bin (10).

5. The integrated device of solid-liquid separation and vibration liquid-removing drying as claimed in claim 1, wherein: the device also comprises a tee joint (6), and the liquid inlet pipe (5) is connected with a vacuum pump (7) through the tee joint (6).

6. The integrated device of solid-liquid separation and vibration liquid-removing drying as claimed in claim 1 or 5, wherein: the device also comprises a control valve (8), and the control valve (8) is arranged at the liquid outlet of the vacuum pump (7).

7. the integrated device of solid-liquid separation and vibration liquid-removing drying as claimed in claim 1, wherein: the sucker (4) and the screen (13) are installed in a sealing mode.