RU105345U1 - LIQUID PREPARATION NODE FOR SILENCING AND WASHING WELLS - Google Patents

Abstract

 1. The site of preparation of killing fluids, including tanks for preparing saline solution, a filtration unit and storage tanks for consumable reagents, characterized in that it contains a block for preparing killing fluids, including tanks for preparing killing fluids with mud mixers, pumping pumps with piping and shut-off -regulating fittings, and the tanks for the preparation of kill fluids are equipped with visual level gauges, sensors of the upper and lower levels densitometer, wherein the cooking unit is connected with killing fluids blocks brine preparation and dosing of chemicals through process lines and unit dosing of chemicals is equipped with ejectors for supplying bulk material. ! 2. The unit for the preparation of kill fluids according to claim 1, characterized in that it comprises diesel fuel storage tanks and oil storage tanks.

Description

The utility model relates to the oil and gas industry and can be used to prepare process fluids for killing and flushing wells during underground and overhauls.

Known unit for the preparation of liquids for killing and flushing wells [RU Patent No. 345656 for the utility model "Mortar and salt unit" E01F 5/00. Published December 10, 2003], which contains containers for preparing saline solution, equipped with receiving hoppers, a filtration unit, transfer pumps, containers for receiving and storing saline solution, containers for storing water and a block of chemicals.

The disadvantages of this site are the insufficient quality of the brine filtration and the absence of a salt crusher.

The closest technical solution is the unit for the preparation of liquids for killing and flushing wells [RU Patent No. 2264249 for the invention of "Unit for the preparation of saline solution" B01F 1/00. Published on November 20, 2005], which contains tanks for preparing saline solution, a filtration unit, transfer and metering pumps, solution storage tanks, chemical consumables, and a salt grinder.

The disadvantage of this solution is the narrow specificity of the unit, aimed at the preparation of saline solutions.

The objective of the proposed technical solution is to provide the preparation of both aqueous solutions of mineral salts and polysaccharide gel technological and blocking liquids, washing and foam systems, light emulsions based on oil.

This is achieved by the fact that the unit for preparing fluids for killing and flushing wells, including reservoirs for preparing saline solution, a filtration unit and consumables for chemical reagents, according to a utility model, contains a unit for preparing fluids for killing, including tanks for preparing fluids for killing fluids with mud mixers, transfer pumps with piping and shut-off and control valves, and tanks for the preparation of kill fluids are equipped with visual level indicators nya, with sensors of the upper and lower levels and densitometers, while the preparation unit for killing liquids is connected to the units for preparing saline solution and dosing chemicals using process lines, and the unit for dosing chemicals is equipped with ejectors for supplying bulk materials. The unit for the preparation of kill fluids contains diesel storage tanks and oil storage tanks.

The utility model is illustrated by the drawing, in which Fig. 1 shows a diagram of the proposed assembly, and Fig. 2 is a schematic diagram of a block for the preparation of kill fluids.

The fluid preparation unit for killing and flushing wells contains a salt storage and crushing compartment 1, a salt solution preparation unit 2, a killing fluid preparation unit 3, a chemical dosing unit 4, an oil storage tank 5 and a diesel fuel storage tank 6. In the storage and crushing compartment salt 1 are a hammer mill with special containers 7 and a diesel forklift 8. In the block for the preparation of salt solution 2 there are containers for the preparation of salt solution with receiving hoppers and mud binders 9, centrifugal pumps 10, a filtration unit 11, storage tanks for process water 12, storage tanks for prepared saline 13, transfer pumps 14 and a loading rack 15. In the dosing unit of chemicals 4, there are reagent supplies 16 and ejectors with hoppers 17. In the block for the preparation of kill fluids 3 are the loading rack 18 and containers for the preparation of kill fluids 19 and 20, equipped with mud mixers 21 (Fig. 2), visual level indicators 22, a signal by insulators of the upper and lower levels 23 and densitometers 24. The piping includes centrifugal pumps 25-28, mass flow meters 29-31, shut-off and control valves and control and measuring devices.

The fluid preparation unit operates as follows.

Salt, crushed with a hammer mill 7, enters special containers and is loaded with a diesel forklift 8 into the receiving hoppers of the saline preparation tanks 9 of the salt solution preparation unit 2, previously filled with water from the storage tanks for industrial water 12. Electric mud mixers (not shown shown) create an intense circulation of fluid, contributing to the dissolution of mineral salts. The prepared saline solution of a given density is pumped by centrifugal pumps 10 through a filtration unit 11, where fine purification from mechanical impurities takes place, in the storage tank of the prepared saline solution 13. From the storage tanks 13, the finished solution enters the loading rack 15 through mass flow meters (not shown in the drawing) recording its temperature, density, volumetric and mass flow rates by means of transfer pumps 14.

To measure the liquid level, the tanks for the preparation of saline solution, the containers for storage of industrial water, and the containers for storage of prepared saline are equipped with signaling devices of the upper and lower levels.

The preparation of light emulsions for killing wells of polysaccharide gel technological and blocking liquids, washing and foam systems is carried out in tanks for the production of kill fluids 19-20 of the unit for the preparation of kill fluids 3. When water is supplied through a mass flow meter 29 by pumps 10 from storage tanks for industrial water 12 and / or the salt solution by pumps 14 from the storage tanks of the salt solution 13, the mud mixers 21 are turned on, and the pumps 25-28 are started in the circulation mode.

To obtain light emulsions, the calculated amount of demulsifier, inhibitor and stabilizer from the reagent supply tanks 16 is supplied to the preparation tank 19-20 by metering pumps and mixed with oil and diesel fuel, which are pumped by pumps 27 and 28 from the oil storage tanks 5 and diesel fuel storage tanks 6 respectively.

To obtain polysaccharide gel technological and blocking liquids, washing and foam systems in preparation tanks 19 and 20, containing water and / or saline, the calculated amount of a crosslinking agent, bactericide, demulsifier and inhibitor is supplied. The gelling agent and the dispersed phase are introduced into the solution using ejectors with hoppers 17.

Filling of the preparation tanks 19-20 is controlled by visual indicators of level 22 and signaling devices of the upper and lower levels 23. Upon reaching the specified density of the liquid recorded by the densitometers 24, the mixers 21 are turned off and the finished solution is pumped by pumps 25-28 through mass flow meters 30-31 to the loading rack 18. The gas released during the preparation in the tanks for the preparation of kill fluids 19 and 20 is discharged to the dispersion candle.

All capacities of the fluid preparation unit for killing wells are equipped with drainage lines.

The unit for the preparation of fluids for killing wells is controlled by an automation system based on a controller.

The proposed site for the preparation of fluids for killing wells allows the preparation of aqueous solutions of mineral salts, polysaccharide gel process and blocking liquids, washing and foam systems, light emulsions based on oil.

Claims (2)

1. The site of preparation of killing fluids, including tanks for preparing saline solution, a filtration unit and storage tanks for consumable reagents, characterized in that it contains a block for preparing killing fluids, including tanks for preparing killing fluids with mud mixers, pumping pumps with piping and shut-off -regulating fittings, and the tanks for the preparation of kill fluids are equipped with visual level gauges, sensors of the upper and lower levels densitometer, wherein the cooking unit is connected with killing fluids blocks brine preparation and dosing of chemicals through process lines and unit dosing of chemicals is equipped with ejectors for supplying bulk material. 2. The unit for the preparation of kill fluids according to claim 1, characterized in that it comprises diesel fuel storage tanks and oil storage tanks.