A kind of mobile oil well hot wash metering device
Technical field
The present invention relates to thermal well flushing field of operation, and in particular to a kind of mobile oil well hot wash metering device.
Background technique
As oil recovery factory's informatization is gradually improved, oil-water well fine-grained management is constantly promoted, by patrolling in real time online
Inspection, comprehensive analysis oil well function figure, electricity ginseng, load data, realizes failure well early warning mechanism, oil well load is increased, function figure " fertilizer
Greatly ", electricity consumption increases oil well, it should arrange hot wash operation in time, avoid well event generation of lying.Since production scheduling needs the time,
And influenced by live geographical conditions, the operation of some oil wells well-washing truck is difficult, so that missing well-flushing best " window phase " causes
Oil well failure happens occasionally.Traditional hot car washing belongs to special engineered vehicle, and volume is big, and operating cost is high.
In the prior art, when gathering and transportation technology tree-shaped using single tube, traditional separator quantitative model is eliminated, oil well meter is given
Amount has some impact on.Although scene has used various meter on well top and individual well indicator to measure, by many factors shadow
It rings, measurement error is big, cannot achieve accurate metering, and institute's admission data can not be utilized, be made a big impact to oil field Efficient Development.
Currently, the equipment of home and abroad fluid metering has positive displacement, including waist wheel, ellipse, scraper type flowmeter, turbine meter, target
Formula flowmeter and ultrasonic flowmeter etc., due to by structure is complicated, field cryogenic conditions, impurity and fouling, gas etc. it is a variety of because
Element influences, and is difficult to meet oil well liquid-producing field metering needs.
Summary of the invention
The purpose of the present invention is to provide a kind of mobile oil well hot wash metering devices.
The technical scheme is that a kind of mobile oil well hot wash metering device, is arranged on electric trailer, including case
Body, setting are equipped with PLC control module in the intracorporal heater of case, power control cabinet in power control cabinet, further include in cabinet backwash water tank,
Backwashing pump, heater are connect with power control cabinet, and the first heating sucker rod is equipped in heater, and the first heating sucker rod is equipped with power harvester,
Heater is equipped with device outlet and device import, and device outlet is equipped with temperature and pressure integrative sensor, backwash water with device import
Case is connect with backwashing pump, and the second heating sucker rod, liquidometer, temperature sensor are equipped in backwash water tank, and backwashing pump is pumped out equipped with backwash
Mouthful, temperature and pressure integrative sensor, power harvester, liquidometer, temperature sensor and PLC control module are electrically connected, the first electric heating
Bar, the second heating sucker rod, backwashing pump and PLC control module are electrically connected.
Further technical solution, heater assembly outlet are connect by quick coupling with oil well casing gate, heater
Device outlet is connect by quick coupling with wellhead sampling mouth.
Further technical solution, PLC control module are previously written hot wash accounting procedure, the acquisition of temperature and pressure integrative sensor
Heater inlet temperature T1, outlet temperature T2, inlet pressure, outlet pressure, heating time, power harvester acquire the first electric heating
Bar active-power P terminates since the t1 time to the t2 time, calculate according to hot wash accounting procedure and acquires fluid mass;
Mixed liquor specific heat: C mixes=η * C water+(1- η) * C oil,
Fluid mass:
M liquid unit: kg;
Wherein, Q is that the first heating sucker rod active-power P terminates accumulative active energy since the t1 time to the t2 time, single
Position: Kwh;X is that the coefficient of heat transfer needs on-site verification to obtain,
η aqueous, crude oil specific heat C for typingOil=2.1 × 103J/ (kg DEG C), water specific heat CWater=4.2 × 103J/(kg℃)。
Beneficial effects of the present invention:
1, the present invention is a kind of mobile oil well hot wash metering device, and device volume is small and exquisite, can be mounted on electric trailer
On, well hot wash can be quickly gone up, live well-flushing is convenient and efficient, and hot wash effect is suitable with traditional hot car washing, can be avoided oil well wax
Block well accident generation of lying, well-flushing cost is greatly saved, and due to being equipped with back washing device, can be avoided scene landing greasy dirt production
It is raw, protect environment.
2, the present invention while integrating metrology function, oilwell produced fluid amount can be effectively measured in hot wash.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention,
Fig. 2 is that the present invention uses schematic diagram,
Fig. 3 is PLC control module alarm schematic diagram,
Fig. 4 is function comparison diagram before and after certain well hot wash,
Wherein, 1, cabinet, 2, heater, 21, device import, 22, device outlet, 23, temperature and pressure integrative sensor, 24, the
One heating sucker rod, 3, backwash water tank, the 31, second heating sucker rod, 32, liquidometer, 33, temperature sensor, 4, backwashing pump, 41, backwashing pump
Outlet, 5, power control cabinet, 6, high-pressure rubber pipe, 7, wellhead sampling mouth, 8, oil well casing gate.
Specific embodiment
Below by non-limiting embodiment, the present invention is further explained, understands the present invention.
As shown in Figs. 1-2, a kind of mobile oil well hot wash metering device, overall mass about 900kg are arranged in electric trailer
On, including cabinet 1, cabinet 1 is interior to be arranged having heaters 2, power control cabinet 5, backwash water tank 3, backwashing pump 4, is equipped with PLC in power control cabinet 5
Control module, heater 2 are connect with power control cabinet 5, wherein heater 2 is made of φ 159*900 stainless steel tube, and backwash water tank 3 holds
Product is 40L, and backwashing pump 4 is 0.75kw plunger pump,
The first heating sucker rod 24, heating power 30kw are equipped in heater 2, heater 2 is equipped with device outlet 22 and dress
Import 21 is set, 2 device import 21 of heater, device export 22 mating quick couplings, and the first heating sucker rod 24 is equipped with power collecting
Device,
Device outlet 22 is equipped with temperature and pressure integrative sensor 23, the 23, first electricity of temperature and pressure integrative sensor with device import 21
Hot rod 24, power harvester and PLC control module are electrically connected, and backwash water tank 3 connect with backwashing pump 4, is equipped in backwash water tank 3
Second heating sucker rod 31, liquidometer 32, temperature sensor 33,31 heating power of the second heating sucker rod are 3kw, and backwashing pump 4 is equipped with backwash
Pump discharge 41, liquidometer 32, temperature sensor 33 and PLC control module are electrically connected, the second heating sucker rod 31, backwashing pump 4 and PLC
Control module is electrically connected.
The course of work is as follows:
When thermal well flushing, device import 21 is connect with wellhead sampling mouth 7 by high-pressure rubber pipe 6, device outlet 22 and oil
Casing gate 8 connects, and heater 2 heats produced liquid in oil well,
Such as Fig. 3, PLC control module has the temperature, pressure of device outlet 22 and device import 21, the first heating sucker rod 24
Function power real time monitoring record, and the working time of heating is recorded, alarm device is equipped in PLC control module, when overtemperature, superpressure
When PLC control module control the first heating sucker rod 24 stop working and sound an alarm.
After well-flushing, backwash pump discharge 41 is connect with 2 device import 21 of heater by high-pressure rubber pipe 6, device goes out
Mouth 22 is connect with oil well casing gate 8, and liquidometer 32,33 real-time Transmission liquid level of temperature sensor, water the temperature inside the box to PLC control
Module, PLC control module control the start and stop of the second heating sucker rod 31, backwashing pump 4, after the clear water heating in backwash water tank 3, pass through
Hot water is pumped by high-pressure rubber pipe 6 from 2 device import 21 of heater, and the oil well liquid-producing in high-pressure rubber pipe 6, heater 2 is washed till
Oil well casing avoids scene from generating landing greasy dirt, facilitates next well-flushing.
Flow rate calculation:
PLC control module is previously written hot wash accounting procedure, by the heater inlet temperature of acquisition, outlet temperature, into
Mouth pressure, outlet pressure, heating time carry out it to calculate and acquire fluid mass.
(1) data acquire:
(2) oil well measurement logging data and constant:
Logging data and constant |
Letter indicates |
Unit |
Typing is aqueous |
η |
|
Crude oil specific heat |
COil=2.1 × 103 |
J/(kg℃) |
Water specific heat |
CWater=4.2 × 103 |
J/(kg℃) |
The coefficient of heat transfer |
X |
0.9~1 |
(3) calculating process
Terminate since the t1 time to the t2 time, calculates oil well liquid measure (time t, unit: min).
Mixed liquor specific heat: C mixes=η * C water+(1- η) * C oil
Fluid mass:(M liquid unit: kg)
Wherein, Q is that the active energy that the active monitoring of the first heating sucker rod adds up to terminate since the t1 time to the t2 time is (single
Position: Kwh), the X coefficient of heat transfer needs on-site verification to obtain.
Mobile oil well hot wash metering device Mr. Yu well has carried out field application for the first time, adds up heating 16 hours.
1. hot wash effect
Such as Fig. 4, through 16 hours hot wash, oil well liquid-producing rose to 78 DEG C by 38 DEG C, and function figure is loose before hot wash, and function figure is bright after hot wash
Aobvious to improve, hot wash effect is suitable with traditional hot car washing, and oil well wax card well accident of lying is avoided to occur.Due to being equipped with back washing device, keep away
Exempt from scene landing greasy dirt to generate.Hot wash 16 hours, add up 210 kilowatt hour of power consumption, with the calculating of 0.7 yuan/kilowatt hour of electricity Unit Price, electricity
Take 240 yuan, traditional 5000 yuan of hot car washing clean-out service individual well cost, reduces 4760 yuan.
2. measuring effect
After hot washing device starting, out temperature in its 30min is changed, acquires the well by the calculating of PLC control module
6.58 tons of liquid of daily output, the well are measured 6.61 tons of liquid of daily output of oily vehicle metering, measurement error 0.45%.