System for measuring the production wells

 

The invention relates to the operation of wells and can be used to measure and control the number of components in the production wells. The objective of the invention is to improve the accuracy of measurement. The installation includes a housing, which houses the measuring degassing unit with movable inlet pipe production wells and output pipelines gas and liquid with a controllable shut-off bodies, equipped with a device for vertical movement and connected with the power Converter into an electrical signal. The installation also contains gatschet, a pump for pumping fluid, hydraulic and electrical control systems and computing unit. The power Converter into an electric signal in the form of load cell weight S-shaped elastic element, and a device for vertical movement of the measuring degassing unit in the form of a roller, mounted on the wall of the housing and associated with the lifting device. Measuring degassing unit is equipped with a fixation device. The installation further comprises a gas purification unit associated with Asociacion and technological capacity to collect condensate, the liquid and the hygrometer, ratesonline relates to automatic control systems and can be used to measure and control the amount of gas oil and water in production wells in the oil, gas and other industries.

A known device for the measurement of production wells (and.with. The USSR 1652521, E 21 In 47/00, op. 30.05.1991 year), including a measuring unit containing horizontal-tight tank (separator) with input and output pipelines and meter weight (hydraulic power Converter into an electrical signal), in addition, the system includes a controllable shut-off bodies, hydraulic and electrical control systems and computing unit.

Known device has a low accuracy of measurement of liquid mass, in addition, it is bulky and has a complex system of control, is not responsible for the protection of equipment, labor protection and technical safety.

A known device for the measurement of production wells (U.S. Pat. RF 2059067, E 21 In 47/00, op. 27.04.1996,), comprising a measuring unit comprising a cylindrical vertical tank (separator) that is installed with the possibility of vertical movement along the alignment bearings and provided with inlet pipe wells, output pipelines gas and liquid and measuring the weight (hydraulic converters force into an electrical signal). Input is, a pump for pumping fluid, and hydraulic and electric control systems and computing unit. Hydraulic power Converter into an electrical signal (sensor type Siwarex") contains a hollow body filled with liquid, which houses the piston reaches the ball.

Known device placed in the body-the body of the all terrain vehicle.

The principle of operation of the known installation is based on the direct weighing of incoming production wells. When this product is pipe after separation in measuring capacity, where the additional gas is withdrawn from the top, measure duplicating gas and absorbed by the collector. Weight measuring capacity together with the fluid creates a force that hydraulic Converter by the impact of the piston on the fluid creates pressure on the ball, which, in turn, is converted into an electrical signal. Thus formed is a 3-level speed command via the current entries in the control system (SU). The mass of the liquid ("net") is determined as the difference between the mass of the "gross" (liquid + weight capacity) and weight capacity. The liquid is pumped from the tank by the pump and is directed to a collector. A single measurement cycle is completed and the device is to have the following disadvantages: low accuracy of the flow measurement of oil, due to poor separation of the gas in the measuring vessel (separator) in connection with a residual phenomenon of saturation pressure in the production wells with medium and high gas factor, especially in a stable oil emulsion; cyclic measurement of production wells, also affect the accuracy of the measurement; the measurement error associated with a fairly complex structure of the sensor type Siwarex" - hydraulic power Converter into an electric signal through a 3-level speed signal transmission measurement in SU; installation of metering block with a cylindrical guide in the back of a car requires a precise calculation in accordance with the center of gravity of the vehicle, otherwise there is measurement error due to friction or crushing.

Thus, the problem of accurate measurement of production wells with medium and high gas factor by improving the quality of gas separation and implementing continuous process of measuring products wells (as opposed to circular in the prototype), as well as improving the reliability of operation.

This problem is solved by the proposed system for measuring the production wells, comprising a housing in which the pipelines gas and liquid with controlled shut-off bodies equipped with a device for vertical movement and connected with the power Converter into an electrical signal, gatschet, a pump for pumping fluid, hydraulic and electrical control systems and computing unit, in which, according to the invention, the power Converter into an electric signal in the form of load cell weight S-shaped elastic element, and a device for vertical movement of the measuring degassing unit in the form of a roller, mounted on the wall of the housing and associated with the lifting device, and the above-mentioned unit is equipped with a fixation device, the installation further comprises a gas purification unit, associated with Asociacion and technological capacity to collect condensate, liquid and hygrometer placed on the liquid line from the measuring degassing unit.

Suitable measuring degassing unit to perform in the form of two D-shaped separator.

The load cell weight S-shaped elastic element, for example, the brand "tenso-M" can be attached to the top cover and connected with the upper section of the two D-shaped separator by means of the signal cable and clamps.

Usuu capacity.

Lifting device for vertical movement of the measuring degassing unit should be carried out in the form of a winch.

The gas purification unit should be carried out in the form of a horizontal separator condensate and gruppovogo device.

Means for fixing the measuring degassing unit may be in the form of the Jack associated with the support.

A pump for pumping fluid from the installation can be performed in vacuum.

The execution of the power Converter into an electric signal in the form of a load cell weight S-shaped elastic element, such as the brand "tenso-M" allows a continuous process of measuring products wells (as opposed to circular in the prototype), which increases the measurement accuracy and makes the measurement more reliable, and management is simpler.

Execution device for vertical movement of the measuring degassing unit as installed on the wall of the housing of the roller associated with a lifting device, allows to simplify the design, to increase the stability of the vehicle weight, improve reliability of operation.

Means for fixing the measuring degassing unit you want to save the e moisture (condensate, water) of the associated petroleum gas entrance to the gas meter and to reduce measurement error.

Additional pipeline for supply of chemicals and steam in technological capacity necessary for measurements of petroleum production wells. The vacuum pump is necessary for self-installation. On the attached figure shows the proposed installation.

The installation includes measuring degassing unit, which includes two l-shaped separator 1 with the upper section 2, the lifting device in the form of a winch with 3 roller 4 and the rope 5. Measuring degassing unit is suspended on the load cell weight 6,associated with the signal cable 7 and the clamps 8, attached to the upper section 2. Two-piece separator 1 is supplied by a pipe 9 with a tangential inlet wells (gas-liquid oil mixture GINS), the piping of the gas outlet 10 and the liquid 11, dividers fluid 12 and 13, as well as emergency horizontal sensor 14. Two l-shaped separator is placed on the support 15 and is provided with means recording - adjustable Jack 16. The gas purification unit includes a horizontal condensate separator 17 and gruppovoe device consisting of a desiccant 18 and n is 20, connected with the pipe 21 supply of chemicals and steam. In addition, the installation includes a gas meter 22 to determine the amount of gas placed in the gas line after a dryer 18, the valve 23 in the gas line 24, the flow meter 25 to determine the amount of fluid in the production, 26 gauge, hygrometer 27 to determine the amount of water in iconette mixture on the output line of the liquid from the separator 1, the vacuum pump 28 and the locking bodies 29-45, .. installation is placed on a frame body (not shown).

Measurement of production wells using the proposed installation is produced as follows. Installation in transportable position (i.e., two-piece l-shaped separator tucked up in the upper position by means of the winch 3 and fixed on the support 15, the load cell 6 with the signal cable 7 no load) drive up to the well and connected to the manifold 9. Then lower support 15 Jack 16 and eliminate the tightness of the rope 5 by turning the winch handle 3 so that the two l-shaped separator was suspended on the load cell 6 (i.e., give centering the load signal cable 7 to the load cell 6) and then open the valve 29. The gas / oil mixture (GGNS) from the collector wells 9 Tangen you can change, switching to another well on the Bush.

Time measuring at least 0.5-1 h with a certain frequency in minutes, including the Main purpose of the two-piece separator 1 is the maximum speed the separation of gas from oil through the tangential inlets. Maximum drying gas supplied to the measurement in the area of asociacija 22, is effected by the devices 17 and 18. Permanent pre-measurement with the least measurement error weight, continuously incoming stream GINS in the separator is produced by the load cell weight 6, and the final measurement degassed fluid - flow meter 25 with an appropriate definition of pressure, differential pressure gauge 26 and measuring the amount of moisture on the moisture meter 27. All data is transmitted to the controller SMAR (not shown). Separated from GINS gas from the upper part of the separator 1 (stage 1) is supplied by two tangential inputs into the upper section 2, after the return of the corresponding moisture (level 2) - through a tangential entry - condensate separator 17 (stage 3), then through the pressure relief valve 23 in line gas 24 - in dehumidifier gruppovogo device 18 (step 4) and partially in the drive condensate 19. Enter in the drier 18 is made also tangential. Then the gas enters us, mixed with oil and water is the liquid inside the flexible connecting pipe wikid 11 installation. All cyclic gas measurements are averaged and transmitted to the controller in the SU, where memory is filled to 32 days. Aggregated data technician takes on the printer for the weekend protocols. Drive condensate 19 is applied and fired in self-cleaning and purging of the working line measurement, 9, 10, 11, when the condensate is supplied into the process container 20 and is pumped into the reservoir by the pump 28. A relief valve 23 type CPCR-4P-25/40 triggered by exceeding the working pressure in the gas line or in the cavity of the installation for the emission in spectrolite - damper (not shown). The safety valve is adjusted to the maximum pressure. The vacuum pump gear 28 can also be activated when the emergency exceeds the operating pressure of the liquid in the separator 1, the sensor 14 automatically turns the pump 28 for pumping fluid lines 11, 12, opening of the electric valve or other electric valves for pumping. Pumped liquid from the separator 1 through line 11 to the flow meter 25 and then sent to wikid installation and mingling with self-cleaning production lines. After work Testaccio weight 6 with the signal cable 7 is released from the load by means of the roller 4, the rope 5, the hoisting winch 3 and fix the upper section of the lever of the clamp 8, and two l-shaped separator by raising a support 15 Jack 16. Unit is ready to move.

The proposed installation can increase the accuracy of measuring the amount of gas and liquid (including water content in oil products with low, middle and high gas factor, as well as in high-wax oils. The installation allows a continuous and systematic control in the measurement of production wells. In addition, it is compact and reliable in operation, can be performed both stationary and transportable, and can be used on all oil fields with a total flow rate of 600 t/d of fluid and 600 000 nm3/day of gas.

Claims

1. The measuring unit for wells, comprising a housing, which houses the measuring degassing unit with movable inlet pipe production wells and output pipelines gas and liquid with a controllable shut-off bodies, equipped with a device for the pumping of liquid, hydraulic and electrical control systems and computing unit, wherein the power Converter into an electric signal in the form of load cell weight S-shaped elastic element, and a device for vertical movement of the measuring degassing unit in the form of a roller, mounted on the wall of the housing and associated with the lifting device, and the above-mentioned unit is equipped with a fixation device, the installation further comprises a gas purification unit associated with Asociacion and technological capacity to collect condensate, liquid and hygrometer placed on the liquid line from the measuring degassing unit.

2. Installation under item 1, characterized in that the measuring degassing unit is made in the form of two D-shaped separator.

3. Installation under item 2, characterized in that the load cell weight S-shaped elastic element, for example, the brand "tenso-M" attached to the top cover and connected with the upper section of the two D-shaped separator by means of the signal cable and clamps.

4. Installation under item 1, characterized in that it further comprises a pipeline for supply of chemicals and steam in technology is unique displacement measuring degassing unit is made in the form of a winch.

6. Installation under item 1, characterized in that the gas purification unit is made in the form of a horizontal separator condensate and gruppovogo device.

7. Installation under item 1, characterized in that the means for fixing the measuring degassing unit is made in the form of a Jack associated with support.

8. Installation under item 1, characterized in that a pump for pumping fluid from the installation is made vacuum.

 

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