EA037840B1 - Drilling sludge treatment device - Google Patents

Abstract

The invention relates to neutralization of drilling wastes and can be used for treatment of drill cutting wastes when drilling deep wells of various purpose. A device includes an element for stimulation of drilling sludge movement during treatment, which is designed as an agitator fixed on a mounting base with a holder on it, located under and around the agitator with the vertical position of the agitator The holder is attached in the central part of a metal crosspiece fixed on top of a grid covering a tank with a treated batch of drilling sludge from above. The tank is designed as a vertically oriented bottomless cell, at the upper angles of which horizontal platforms are provided for attaching the grid to the cell and the crosspiece to the grid. The technical result of the claimed invention consists in capability for simplification of device installation.

Description

The invention relates to the field of disposal of drilling waste and can be used for the treatment of cuttings drilling waste when drilling deep wells for various purposes.

Known device for processing drill cuttings, described in the patent of the Russian Federation for utility model No. 71115. The device contains a housing, a container for loading cuttings. The body is divided by a partition into two chambers, a collection chamber and a water separation chamber, and is equipped with a removable pan and water drainage pipes at the bottom. The container for loading the sludge is located in the collection chamber, installed on a frame, equipped with a lid and made of a metal mesh in such a way that a channel for the passage of steam is formed inside the container. The body is equipped with a bell, which is connected to the bottom of the container to provide the possibility of supplying steam to it.

There is also known a device for neutralizing drill cuttings, described in the RF patent for utility model No. 170033. The device is a mobile landfill formed from a set of sealed containers of the same shape and size, by connecting them together with sealing and at the same time joining elements of straight, angular and other forms. In the illustrated embodiment, the containers in the patent are in the form of an inverted truncated pyramid. Each container includes a bottom and side walls. Specially prepared containers are delivered to the site of the proposed accumulation, placement, and further disposal site. In fact, a mobile landfill is declared in the form of a set of liners, which are sealed containers, in which only drill cuttings are located, and neutralization is carried out due to the maturation of the processed mass.

The disadvantage of this technical solution is the lack of development of other structural details and the resulting passive, and, therefore, long-term and not guaranteeing high quality of processing of drill cuttings processing mechanism. As a result, the use of this solution is time consuming and requires a lot of production space.

The closest analogue to the claimed device is the technical solution described in the RF patent for utility model No. 142084. The device contains a container equipped with a vibrode. A sieve is located inside the tank, equipped with floats to allow the sieve to move vertically inside the tank, and a pump is located in the sieve. To create vibration waves, the container is equipped with a stimulation and movement element - an ultrasonic vibrator, as well as an ultraviolet emitter.

The disadvantage of the closest analogue is the lack of structural reliability associated with the use of a sieve in a patented design with a mesh size of about 1 mm. The use of the device in the field is extremely difficult, since the sieve requires constant rinsing after clogging. In addition, the operation of complex mechanisms such as an ultrasonic vibrator and emitter for a large-tonnage processing object requires significant energy consumption.

The objective of the claimed invention is a guaranteed improvement in the quality of neutralization of processed drill cuttings while simplifying the design of the device.

The essence of the claimed invention lies in the fact that in a device for treating drill cuttings, which includes an element for stimulating the movement of drill cuttings during processing, the latter is made in the form of a mixer fixed on a mounting base with a holder on it, placed under and around the mixer when it is vertically located, fastened in the central part of the metal cross, fixed on top of the grid, covering the top of the container with the processed portion of drill cuttings and made in the form of a vertically oriented cell without a bottom, in the upper corners of which there are horizontal platforms for fastening the grid to the cell, the cross to the grid.

In addition, in the device with the listed features, couplings, gaskets and nuts are used for fastening.

The technical result of the claimed invention lies in the possibility of simple installation and dismantling of the device for processing drill cuttings, moving separately the mixer and the mounting base to the next processing object - an adjacent cell, which serves as a support for the mounting base and a container for the processing object at the same time.

The inventive device is illustrated using FIG. 1, 2, where in FIG. 1 shows the external view of a separate cell, FIG. 2 - cell without mounting base.

In the drawings, numbers 1-9 denote:

- stirrer;

- cell;

- mounting base;

- holder;

- metal crosspiece;

- shaft;

- impeller;

- horizontal platform for fasteners;

- fastening element.

The two most important elements of a device for treating drill cuttings in the form of a mixer 1, which is immersed not in a sludge storage facility traditionally used for this, but in a structure built into it in

- 1 037840 in the form of metal reinforcement, divided into a number of inserts in the form of rows along and across the sludge storage, each of which is made as a vertically oriented cell 2 without a bottom. Moreover, this element is nothing more than a stand for a working agitator, in fact, its mounting base 3. The agitator 1 is installed firmly on the holder 4 that holds from below, which, in turn, is attached to a strong metal cross 5, which is mounted over the mounting base 3 cell 2, through the hole of which the working body of the mixer 1 is immersed. The working body is an impeller 7 mounted on the shaft 6 with the possibility of mixing drill cuttings at a speed of 30-60 rpm. At the corners of the cell 2 there are horizontal platforms for fasteners 8. The metal cross 5 under the mixer 1 has fasteners 9 in the center and on the horizontal platforms, thereby ensuring a reliable connection of the elements of the claimed device.

Despite the simplicity and the minimum number of parts, some of which play the role of fasteners, the claimed device is optimized as much as possible. By moving the agitator after dismantling from one previous cell and installing the agitator in the next same cell on top of its grate, covering the upper surface of the cell, a thorough passage for processing throughout the sludge storage is achieved. This improves the quality of processing drill cuttings, all of its mass without gaps.

This does not exhaust the technical advantages of the proposed device. The metal cell, as a container dividing the processed mass, also allows the consumable chemical reagents to be introduced more accurately, by mixing them, starting from the moment the portions are introduced into each of the cells and until the processing is completed. This quality of processing is unattainable when mixing the sludge with an excavator bucket. When using an excavator, it is impossible to guarantee the absence of dead zones, where the reagents did not hit, did not reach. Hence, the control is able to give inaccurate data, which, in comparison with a carefully processed mass from cell to cell, with an accurately and evenly applied measure of the reagent in each cell is excluded.

The claimed device for its operation does not require special highly qualified personnel. With a minimum completeness, high-quality processing is ensured without special safety and labor protection requirements for the working personnel.

Example. The claimed device is made in the form of a prototype. Currently, it is being tested in the development of methods for processing, disposal and disposal of drill cuttings.

Claims (2)

CLAIM 1. A device for processing drill cuttings, including an element for stimulating the movement of drill cuttings during processing, characterized in that the latter is made in the form of an agitator fixed on a mounting base with a holder on it, placed under and around the agitator in its vertical position, mounted in the central a part of a metal cross fixed on top of the grid, covering from above the container with the processed portion of drill cuttings, made in the form of a vertically oriented cell without a bottom, in the upper corners of which there are horizontal platforms for fastening the grid to the cell, the crosses to the grid. 2. The device according to claim 1, characterized in that couplings, gaskets and nuts are used for fastening.