CN206571450U - A kind of online processing device for removing liquid of oil drilling drilling cuttings - Google Patents

Abstract

The utility model relates to an on-line dehydration processing device for drilling cuttings in an oil field, which consists of a cuttings collection tank, a screw conveyor, a self-cleaning centrifugal filter, a multi-tube drying machine, a storage and transportation box for drilling cuttings and a drilling fluid recovery pipe. The drill cuttings collection tank is connected to the feed port of the self-cleaning centrifugal filter through a screw conveyor, and the slag discharge port of the self-cleaning centrifugal filter is connected to the feed port of the multi-tube dryer. The chip discharge port of the dryer is connected to the cuttings storage and transportation box, and the liquid discharge port of the self-cleaning centrifugal filter and the liquid discharge port of the multi-tube dryer are connected to the drilling fluid recovery manifold. Applying this device to online dehydration treatment of wet drill cuttings discharged from oil field drilling can fully reduce the volume of drill cuttings, facilitate the transportation and centralized treatment of drill cuttings discharged outside, so as to prevent the drill cuttings from landing on site; and can recover the drilling to the greatest extent Fluid, reducing the amount of drilling fluid discharged, thereby reducing the total amount of drilling fluid, saving drilling costs, and significant economic and environmental benefits.

Description

An oilfield drilling cuttings online dehydration processing device

technical field

The utility model relates to the field of oilfield drilling waste treatment, which is an online dehydration treatment device for oilfield drilling cuttings.

Background technique

In the process of oil field drilling and production, most of the drilling cuttings are separated from the circulating drilling fluid by the solids control system, and are usually directly discharged into the mud pool. things. There are many harmful substances in these drilling wastes, such as heavy metal ions, oil products and a large amount of organic polymers. If these drilling wastes are not treated, they will endanger the surrounding ecological environment and even endanger human health.

Part of the drilling fluid is discharged along with the cuttings, which not only increases the total amount of drilling waste and the workload of subsequent environmental protection treatment, but also wastes a large amount of drilling fluid, which increases the total cost of drilling.

It is a very important task for current oilfield enterprises to reduce the harm of drilling waste to the environment as much as possible. At present, there are many domestic solutions for the harmless treatment of drilling waste, such as solidification treatment, fractionation treatment, chemical harmless treatment, biological treatment, etc. There are big differences in technical solutions, equipment matching, and environmental protection investment. . However, a safe, reliable and low-cost on-site treatment technology has not been formed so far.

In order to conduct a thorough and harmless treatment of drilling waste, the combination of on-site rapid treatment and centralized thorough treatment will become the ultimate solution to the problem.

Utility model content

The utility model aims to solve the problem of on-site rapid treatment of drilling cuttings in oil fields, and provides an online dehydration treatment device for drilling cuttings in oil fields. The further drying of drilling waste and the reduction of drilling waste are beneficial to the subsequent harmless treatment of drilling waste, and it is possible to prevent drilling cuttings from landing on the drilling site.

In order to achieve the above technical purpose, the utility model provides the following technical solutions:

An oil field drilling cuttings online dehydration processing device, characterized in that it includes a cuttings collection tank, a screw conveyor, a self-cleaning centrifugal filter, a multi-tube dryer, a storage and transportation box for cuttings, and a drilling fluid recovery pipe The drill cuttings collection tank is connected to the feed port of the self-cleaning centrifugal filter through a screw conveyor, and the slag discharge port of the self-cleaning centrifugal filter is connected to the feed port of the multi-tube dryer, and the multi-tube dryer The chip discharge port of the drilling machine is connected to the drilling cuttings storage and transportation box, and the liquid discharge port of the self-cleaning centrifugal filter and the multi-tube dryer are connected to the drilling fluid recovery manifold.

The bottom of the cuttings collection tank is provided with a screw propeller for the cuttings collection tank.

The utility model has the following advantages: the system is stable and reliable, can run continuously, is simple to operate, and has low operating cost; it can fully reduce the volume of drill cuttings, facilitate the transportation and centralized treatment of drill cuttings discharged outside, and can recover drilling fluid to the greatest extent, reducing The amount of drilling fluid is discharged outside, thereby reducing the total amount of drilling fluid, saving drilling costs, and having significant economic and environmental benefits.

Description of drawings

Fig. 1 is a schematic diagram of an online dehydration treatment device for oilfield drilling cuttings proposed according to the utility model.

As shown in Figure 1, 1 is the cuttings collection tank, 2 is the screw conveyor, 3 is the self-cleaning centrifugal filter, 4 is the multi-tube dryer, 5 is the cuttings storage and transportation box, and 6 is the recovery of drilling fluid Manifold, 1.1 is the screw propeller of the drill cuttings collection tank, 3.1 is the feed port of the self-cleaning centrifugal filter, 3.2 is the discharge port of the self-cleaning centrifugal filter, 3.3 is the slag discharge port of the self-cleaning centrifugal filter, 4.1 is the feed port of the multi-tube dryer, 4.2 is the liquid outlet of the multi-tube dryer, and 4.3 is the chip discharge port of the multi-tube dryer.

detailed description

Below in conjunction with accompanying drawing and example the utility model is described further:

As shown in Figure 1: an oilfield drilling cuttings online dehydration treatment device, characterized in that it includes a drilling cuttings collection tank 1, a screw conveyor 2, a self-cleaning centrifugal filter 3, a multi-tube drying machine 4, Drilling cuttings storage and transportation box 5 and drilling fluid recovery manifold 6, the drill cuttings collection tank 1 is connected to the feed port 3.1 of the self-cleaning centrifugal filter through the screw conveyor 2, and the slag discharge port 3.3 of the self-cleaning centrifugal filter is connected to the The feed port 4.1 of the multi-tube dryer is connected, the chip discharge port 4.3 of the multi-tube dryer is connected with the drilling cuttings storage and transportation box 5, and the discharge port 3.2 of the self-cleaning centrifugal filter is connected to the drain of the multi-tube dryer Port 4.2 is connected to drilling fluid recovery manifold 6.

The bottom of the cuttings collection tank 1 is provided with a screw propeller 1.1 for the cuttings collection tank.

The operation process is as follows: the wet cuttings produced by drilling in the oil field first enter the cuttings collection tank 1, the wet cuttings settle and accumulate in the cuttings collection tank 1, and are discharged under the action of the screw propeller 1.1 of the cuttings collection tank, and then pass through the screw Conveyor 2 transports the wet drill cuttings to the feed port 3.1 of the self-cleaning centrifugal filter, and the wet drill cuttings are separated from solid and liquid at full flow in the self-cleaning centrifugal filter 3, and the treated filter residue is passed through the self-cleaning centrifugal filter The slag discharge port 3.3 enters the feed port 4.1 of the multi-tube dryer, and further solid-liquid separation is carried out in the multi-tube dryer 4, and the dried drill cuttings after treatment enter through the chip discharge port 4.3 of the multi-tube dryer. Drill cuttings storage and transportation box 5 for temporary storage; the filtrate separated by self-cleaning centrifugal filter 3 enters drilling fluid recovery manifold 6 through self-cleaning centrifugal filter discharge port 3.2, and multi-tube drying machine 4 dries The discharged liquid enters the drilling fluid recovery manifold 6 through the liquid outlet 4.2 of the multi-tubular drying machine to form a recovered drilling fluid, which returns to the solid control system for oil field drilling and continues to be used.

Applying the oil field drilling cuttings online dehydration processing device proposed according to the utility model, on the one hand, it can further dry the wet drilling cuttings discharged from the oil field drilling, so that the liquid content is less than 18%, which can fully reduce the discharge of drilling cuttings volume, which is convenient for the transportation and centralized treatment of drill cuttings, which provides conditions for the oilfield drilling cuttings not to land on site; The total amount saves drilling costs.

Claims (2)

1. An oil field drilling cuttings online dehydration processing device, characterized in that: it includes a cuttings collection tank, a screw conveyor, a self-cleaning centrifugal filter, a multi-tube dryer, a storage and transportation box for cuttings and drilling fluid Recovery manifold, the drill cuttings collection tank is connected to the feed port of the self-cleaning centrifugal filter through a screw conveyor, and the slag discharge port of the self-cleaning centrifugal filter is connected to the feed port of the multi-tube dryer. The chip discharge port of the dryer is connected to the cuttings storage and transportation box, and the liquid discharge port of the self-cleaning centrifugal filter and the liquid discharge port of the multi-tube dryer are connected to the drilling fluid recovery manifold. 2. The online dehydration processing device for oilfield drilling cuttings according to claim 1, characterized in that: the bottom of the cuttings collection tank is provided with a screw propeller for the cuttings collection tank.