Installation for water treatment in the oil fields
The invention can be used in the oil fields. The installation includes the technological capacity of the pipeline to supply water for cleaning and pipes for removal of gas, water and oil. Provides performance improvements installed at the expense of more intensive separation of impurities from the incoming wastewater. The inventive device bottom part technological capacity divided by partitions into the zone of accumulation and discharge of water, the zone of accumulation and discharge of oil and the Central settling zone. In the last set hydrocyclone tangential entry down. This tangential entry cyclone connected to the pipeline for supply of prepared water. The Central nozzle tangential input connected to the zone of accumulation and discharge of oil. 2 C.p. f-crystals, 1 Il.The invention relates to systems of collection and preparation of oil and water in the oil fields.Well-known  for the purification of waste (oily) water on the fields, consisting of a tank-clarifier, where the dispenser is connected to the pipeline, which is served by waste water compartment for accumulation and reset the AUX sucks and low productivity.The technical task of the invention is to increase the plant productivity through more intensive separation of impurities from the incoming wastewater.To solve the tasks set for the preparation of water on fields containing the technological capacity of the pipeline to supply treated water and piping for removal of gas, water and oil, is further provided with a hydrocyclone, and the lower part of the technological capacity divided by partitions into the zone of accumulation and discharge of water, the zone of accumulation and discharge of oil, and the Central settling zone in which the hydrocyclone has tangential inlet down, with tangential entry cyclone connected to the pipeline for sewage supply, and the Central nozzle tangential input connected to the zone of accumulation and discharge of oil.To automate the installation is supplied by the controller of the liquid level in the settling zone, actuating mechanism installed in the pipeline supplying water for cleaning, and in the zone for the accumulation and discharge of oil sensors are mounted upper and lower levels to control the pump oil.For joint training of water entering sing water set mixer (jet pump).The invention is illustrated by the drawing, which shows a diagram of the installation for the preparation of water on the fields.Installation for water treatment in the oil fields consists of horizontal technological capacity 1, the upper part of which is a zone 2 accumulation of gas, and the lower portion of the process vessel in which fluid accumulates, separated by partitions 3 and 4 zone 5 accumulation and discharge of water, the Central settling zone 6 and zone 7 of the accumulation and discharge of oil-water emulsion or oil (depending on the stability of the emulsion). Process tank 1 is equipped with a cyclone 8, which is installed in the settling zone inverted so that the tangential input 9 extends below the container 1.When the hydrocyclone 8, there are formed three zones: the lower - separated water, medium - separated oil and the upper - separated gas. The lower area of the hydrocyclone through the holes 10 communicates with the settling zone of the tank below the liquid level therein, and the average area of the hydrocyclone through the Central pipe 11 tangential input 9 of the cyclone 8 and the bypass pipe 12 communicates with the zone 7 of the accumulation and discharge of oil.Process tank 1 is equipped with a level control direct action, the float 13 which is the ode, the water inlet in technological capacity. In the processing vessel 1 in zone 7 for the accumulation and discharge of oil sensors 14 and 15 of the upper and lower levels.Tangential input 9 of the hydrocyclone 8 connected to the pipe 16, the feed into the process tank 1 water to clean it. From the vessel depart the pipeline 17 to drain the oil and pipelines 18 and 19 for removal of water and gas for further recycling.The drawing shows the setup for joint training Cenomanian and bottom (oily) water. To achieve this goal in a feed line 16 is the mixer 20.Cenomanian water containing free gas and mechanical impurities, under the pressure of the downhole pump through the pipeline 21 is served in the jet mixer 20, in which the field of preparation of oil (not shown) in line 22 is sucked produced water.From the output of the mixer through the regulator spool 13 of the liquid level of the mixed flow in the pipe 16 enters the hydrocyclone, which is intense separation. Water with solids through the holes 10 is discharged into a settling zone 6 of the container 1. Oil through the main pipe 11 and the pipe 12 is discharged into the zone 7 of the accumulation of oil is th under the influence of gravity there is a further division, when the oil shimmers in zone 7 of the accumulation and discharge of oil-water emulsion through an orifice 23 in the upper part of the partition 4, and the water through the slit gap 24 in the partition 3 flows into zone 5 of the accumulation and discharge of water.Due to the fact that in produced water oil contained in a small amount, up to about 1000 mg/l, and completely separate it from the water it is very difficult, especially because the oil is in the water in the form of a thin film, in zone 7, as a rule, will accumulate water-in-oil.Purified water by the pump 25 through the filter 26 is supplied to the system reservoir pressure maintenance in the field.Gas due to its minor number is supplied to the dispersion or burning.Separated water-in-oil pump 27 periodically by the command of the sensors 14 and 15 are sent to the installation of oil.From the relative position of the float regulator 13 and the calibrated holes 23 depends on the amount of water drained from the settling zone 6 zone 7 accumulation of oil.The Central pipe 11 hydrocyclone 8 must be positioned under the liquid surface in the distance, open the “funnel” addictive film of oil in the pipe.For purification from scapling water from mechanical impurities and reduces the amount of oil to the value not exceeding 10 mg/l, which makes the Cenomanian and produced water suitable for reservoir pressure maintenance.The source of information1. The Hydrographic System Of Latushkin. Collection and preparation of oil, gas and water. M., Nedra, 1983, S. 170-172, Fig.75.
Claims1. Installation for water treatment and water emulsions containing technological capacity of the pipeline to supply treated water and piping for removal of gas, water and oil, characterized in that it is provided with a hydrocyclone, and the lower part of the technological capacity divided by partitions into the zone of accumulation and discharge of water, the zone of accumulation and discharge of oil and the Central settling zone in which the hydrocyclone has tangential inlet down, with tangential entry cyclone connected to a pipe for supplying water to be purified, and the Central nozzle tangential input connected to the zone of accumulation and discharge of oil.2. Installation under item 1, characterized in that it is provided by the controller of the liquid level in the settling zone, actuating mechanism installed in the pipeline supplying water for cleaning, and in the zone for the accumulation and discharge of oil sensors are mounted upper and lower levels for upravlenii water installed faucet joint submission to the preparation of the waters, coming under high and low pressures.
FIELD: oil extractive industry.
SUBSTANCE: device includes exposure chamber, U-shaped branch pipe on it for passing of oil with picking of oil from upwards, made in form of five pipes inserted into one another with common ceiling and bottom and apertures in upper and lower portions of pipe, forming serially placed U-shaped and upturned U-shaped branch-pipe, and channel for passing of water with picking of water from downwards, having common output from device.
EFFECT: higher efficiency.
1 ex, 1 dwg
FIELD: oil and gas production.
SUBSTANCE: invention relates to gas-liquid systems coming from oil production wells. Mixture is separated into liquid and gas in separator. Liquid is periodically accumulated in separator container and then displaced with gas. During this operation, differential pressure for liquid reaching its lower and upper recorded levels and time required for filling recorded volumes are measured as well as absolute pressure and temperature of gas in container. Liquid flow value expressed in weight is calculated using special mathematical dependence. At oil field, liquid and gas enter separator from preliminary gas intake installation or from the first separation step.
EFFECT: increased accuracy of measurement due to avoided gas density registration and excluded necessity of using strictly cylindrically-shaped measuring container.
FIELD: oil extractive industry.
SUBSTANCE: mixture is separated on liquid and gas in separator. Liquid is periodically collected and forced away by gas while measuring absolute pressure and gas temperature in separator tank near upper and lower fixed liquid levels, and times of forcing away of fixed liquid volume. Additionally measured are absolute pressure and temperature in moment when liquid reaches intermediate fixed level. Then liquid is forced from intermediate fixed level to lower fixed level separator is switched off from well, and mass loss of gas is calculated from provided relation. Device for realization of method consists of separator with feeding pipe, in which a three-drive valve is mounted, and draining pipe, which through said valve is connected to liquid outlet channel and to gas outlet channel. Separator is provided with sensors of temperature and pressure and sensors of upper, intermediate and lower levels, mounted in such a manner, that they separate fixed volumes between each other in separator tank, in case of equality of which calculations are simplified.
EFFECT: higher precision.
2 cl, 1 dwg
FIELD: oil industry.
SUBSTANCE: method includes mixing water-oil emulsion with drain water in line of inlet of first electric hydrator by dispersing drain water in volume 8-15% from volume of prepared oil at temperature 40-50°C. As washing water drain water is used from same oil deposit with mineralization less than saturation limit.
EFFECT: higher efficiency.
FIELD: oil industry.
SUBSTANCE: method includes feeding oil emulsion to reservoir with flow 0,5-1 m3/hour through layer of drain water of same oil deposit with mineralization less than saturation limit at temperature 20-30°C and bed thickness of drain water 6-8 m. in reservoir oil is separated and directed to inlet of oil preparation plant.
EFFECT: higher efficiency, broader functional capabilities.
FIELD: oil industry.
SUBSTANCE: method includes dispersing water in oil emulsion at input of accumulator. As water, drain-water of the same oil deposit is used with content of oil products no less than 60 mg/l and hard suspended particles no more than 50 mg/l in volume 8-15% of volume of prepared oil at a temperature 5-25°.
EFFECT: higher efficiency.
FIELD: oil industry, particularly to prevent salt deposits in collector and measuring installations during oil production and transportation.
SUBSTANCE: method involves mixing product flows and transporting thereof, wherein compatible liquids are chosen for further mixing so that during mixing of above liquids oversaturated salt solution does not appear to prevent salt precipitation. Liquid for mixing is taken in amount enough to reduce salt concentration to value, which does not exceed saturated concentration and provides mineralization obtaining after liquid mixing. Mixing of liquid flows is performed out of process equipment and in tubes provided with release coating applied on inner tube surfaces.
EFFECT: increased simplicity due to elimination of chemical reagent usage and due to reduced number of stages.
FIELD: oil production industry, particularly for oil product separation.
SUBSTANCE: method involves mixing gaseous hydrocarbon with aqueous acid solution with pH value of not more than 4 so that hydrate-generation gas is converted into hydrate phase under hydrate phase forming control.
EFFECT: increased efficiency due to increased separation degree, increased simplicity, possibility to utilize separation products and enhanced safety.
15 cl, 2 dwg
FIELD: oil production, oil refining, oil chemistry and other fields connected with emulsion breakdown, particularly adapted for formation fluid separation into such components as oil, gas and water.
SUBSTANCE: method involves subjecting formation fluid flow to magnetic treatment to provide emulsified water droplet coalescence; breaking inhibiting shells at oil-water interface to provide additional water droplet collision. To increase rate of water-gas-oil emulsion stratification, to improve quality of emulsion separation into oil, gas and water and to reduce emulsifier consumption above magnetic treatment is carried out in field directed transversely to fluid flow and having strength H = 5-10kA/m and magnetic field strength gradient dH/dr=2-5·106 A/m2. Unidirectional unipolar point constant magnets are used for above magnetic field creation. Inhibiting shells are broken with the use of vibration having 10-100 Hz frequency and 0.5-10 mm amplitude.
EFFECT: increased emulsion breakdown rate along with decreased hydrocarbon concentration in water and water content in hydrocarbon, as well as reduced demulsifier consumption.
1 tbl, 2 dwg
FIELD: water production from boreholes.
SUBSTANCE: method involves drilling production and injection borehole systems; penetrating borehole by perforation thereof; applying vibroacoustic pressure oscillations to formation, wherein the pressure oscillations are excited by acoustic borehole tools lowered in boreholes; producing water from boreholes. Injection borehole pipes are not perforated and are filled with working liquid. Acoustic oscillations are initially applied to production boreholes so that pressure in production boreholes preliminarily filled with fracturing liquid should be at least 2 times greater than formation breakdown pressure. Acoustic borehole device is located within perforation area. After crack opening water is lifted from production boreholes. During water lifting acoustic pressure oscillations are applied to formation through injection boreholes.
EFFECT: provision of water production in dry territories, increased economy and efficiency.