SU570692A1 - Device for processing and preparing drilling composition - Google Patents

Description

one

The invention relates to the field of drilling wells and is intended for the treatment and preparation of drilling mud.

A known installation for the treatment and preparation of drilling fluid, containing reservoirs for drilling mud, reservoirs for bulk materials, a common pneumatic conveying line, a hopper, a hydraulic mixing device for high-yielding capacity, a low-capacity hydraulic mixing device, a hydraulic mixing device for bulk solids reagents, 1.

The use of this setup is designed to add a die to the drilling mud either through a low-performance tool or through a high-performance one.

Untheatants come from tanks for bulk materials through a common pneumatic conveying line, a receiving hopper with a dosing unit and a hydraulic mixing device into a tank for preparing drilling mud. Bulk chemical reagents from a separate container with a metering device can be fed into this tank already through another water mixing device, as well as liquid chemical reagents.

Thus, the presence in this installation of a mixing device associated with

on the one hand, a common pneumatic conveying line with tanks for bulk materials and, on the other hand, one hydrotransport line with a tank for preparing drilling mud does not ensure the continuity of the process — preparation of a solution of different composition while maintaining the parameters of the circulating fluid. In addition, this installation eliminates the possibility of simultaneously supplying more than one bulk material, which prevents the combined treatment of drilling mud.

Also known is an installation for the treatment and preparation of drilling fluid, which contains tanks for drilling mud, containers for bulk materials, connected by independent pneumatic conveying lines to a receiving hopper, a hydraulic mixing device and hydrotransport 2.

Its disadvantage is the impossibility of ensuring the continuity of the process of preparing a solution of different composition and maintaining the parameters of the circulating solution, since the hydraulic mixing device is connected by hydrotransport with only one capacity of solution preparation.

In order to ensure the continuity of the process of preparing a solution of different composition, the mixing device is made in the form of two ejectors united by a common receiving bin, the ejectors being connected by independent hydrotransport lines, one with the receiving capacity of the circulating drilling mud, the other with the capacity for preparing the solution.

The drawing shows a diagram of an installation for the treatment and preparation of drilling mud.

The installation includes a receiving tank 1 of circulating drilling mud, a tank 2 for preparing the solution, a tank 3 for bulk materials, a slurry mixing device 4 with two ejectors 5 and 6 combined with a common receiving bin 7 with an air filter 8. The tanks for bulk materials are connected to a receiving bin hydraulic mixing device with independent pneumatic conveying lines 9. Ejectors of a hydraulic mixing device are connected by independent hydraulic transport lines 10 and 11, one with the receiving capacity of the circulating races the other, with a solution preparation tank. Hydrotransport lines include pumps 12 and 13.

When treating circulating drilling mud with bulk materials, the solution flows from the receiving tank 1 through the hydrotransport line 10 using a pump 12 to the elec- tor 5, then again into the tank 1. The bulk materials (barite, chalk, salt, etc.) from the tanks 3 are fed via independent pneumatic conveying lines 9 to the receiving bunker 7 of the mixing plant 4, in which their kinematic energy is quenched. After being released from the air, bulk materials flow to electrolyte 5 and then through hydrotransport line 10 to the receiving tank. Air is removed through the filter 8.

In the preparation of fresh drilling fluid in the tank 2, use the ejector 6 of a mixing plant 4, a hydrotransport line 11 with a pump 13,

In the preparation of drilling pacTiBopa of various composition, bulk materials in predetermined quantities and with a certain intensity from tanks 3 through independent pneumatic conveying lines 9 are fed to a receiving hopper 7 and then fed to an ejector 6

slurry unit 4. From the slurry unit, the solution along the hydrotransport line 11 is pumped by pump 13 into the solution preparation tank 2. The continuity of the process of preparing a complete drilling mud of different composition with simultaneous treatment of the circulating drilling mud is ensured by feeding through independent pneumatic conveying lines.

bulk materials simultaneously to both ejectors 5 and 6 of the mixing device 4 and the simultaneous operation of the hydrotransport lines 10 and 11.

By ensuring the continuity of the process of preparing fresh mud and the possibility of simultaneous treatment of the circulating fluid, installation downtime due to waiting for the preparation of fresh mud is eliminated. Emergency situations are prevented, in which it is necessary, without interrupting the processing of drilling fluid circulating through the well, to prepare and introduce into circulation a fresh solution of the required parameters.

Claims (2)

1. US Patent No. 3591147, cl. 259-154, 1968. 2. The system of the company Byron-Jackson, Petroleum Time, 1968, 72, No. 1845, p. 632 (prototype).