Part 6 Well Testing Equipment
CPTDC can provide domestic well testing instrument to meet the need of different users for various well testing tasks, including electronic memory pressure gauge for slick line well testing task, electronic pressure gauge for drilling stem testing, mechanical pressure gauge, pressure gauge for formation testing, electromagnetic flowmeter, pressure gauge calibrator, pumping well tester, dynamometer, dynamometer calibrator, echometer and truck-mounted / skid-mounted well testing equipment.
By adopting advanced technology and through the improvement of production process, the China-made well testing equipment now have stable quality and excellent performance to meet the different requirements of oil/gas well testing.
The Chinese manufacturers of well testing equipment have possessed a large production capacity to serve the international market.
1. Electronic Memory Pressure Gauges
● Introduction Electronic memory pressure gauge is mainly used to measure and record the downhole pressure and temperature in various oil wells, gas wells and water wells.
● Features ● Low power consumption and long continuous working time ● Large memory capacity, up to 8, 000 or 16, 000 groups of data points ● Several starting-up modes: instant starting, time-delayed starting, and pressure starting ● Non-rechargeable battery and reliable operation ● No additional battery or power supply needed
● Specifications |  |
Pressure range (MPa) | 0 to 40
0 to 60
| 0 to 40
0 to 60
| 0 to 40
0 to 60
| 0 to 40 0 to 60
0 to 80
| 0 to 40 |
Pressure accuracy (F.S) | ±0.1% ±0.05%
| ±0.1% ±0.05%
| ±0.1% ±0.05%
| ±0.1%
| ±0.2%
|
Maximum working temperature (℃)
| 120
| 120
| 120
| 150
| 100
|
Allowable temperature error (℃)
| ±1
| ±1
| ±1
| ±1
| ±1
|
Memory capacity (group)
| 8, 000
| 8, 000
| 8, 000
| 16, 000
| 16, 000
|
Continuous working time (day)
| 120
| 120
| 120
| 120
| 120
|
Dimensions (mm)
| Φ25×670
| Φ36×670
| Φ20×670
| Φ36×630
| Φ25×700
|
2. DST Testing Electronic Pressure Gauges
● Introduction
DST Testing Electronic Pressure Gauge is a type of electronic memory pressure gauge that is applied to DST testing. It can test and record two parameters pressure and temperature simultaneously. Furthermore, the gauge can work during the tubing-convey perforation process when connected to perforator and other tools. In addition, it can also be connected directly to the drilling pipe to test the formation pressure and temperature during the drilling process.
● Features
● Acquisition mode: conventional mode or differential pressure mode
● Starting mode: immediate starting, time-delayed starting and pressure starting
● Using imported non-rechargeable high-temperature batteries of excellent reliability
● Equipped with a damper for shock absorption
● Applicable for high pressure well testing (a slick line socket is required and the outer housing of the battery tube has to be replaced.)
● No additional battery or power supply needed when communicating with a computer
● Specifications
Pressure range (MPa)
| 0 to 60, 0 to 80
|
Pressure accuracy (F¡¤S)
| ±0.1%
|
Maximum working temperature (℃)
| 150
|
Temperature range (℃)
| 0 to 150
|
Allowable temperature error (℃)
| ±1
|
Memory capacity (group)
| 120, 000
|
Dimensions (mm)
| Φ73×874
|
3. Mechanical Downhole Pressure Gauges
● Introduction
It is used to measure the downhole pressure of oil wells and water wells and to record the maximum temperature in the process of testing.
● Features
● stable performance, easy operation and convenient maintenance
● Specifications
Uncertainty of measurement (F·S) | ±0.5% | ±0.5% | ±0.2% | ±0.2% |
Maximum working pressure (MPa) | 30 | 60 | 138.7 | 100 |
Maximum working temperature (℃) | 80 | 150 | 150 | 150 |
Compatible clocks | SJ6¢ò | SJ6¢ò | KPG, DPG, RPG-3, CPG25 | KPG, DPG, RPG-3, CPG25 |
Compatible clocks series (hour) | 12, 48 | 12, 48 | 2, 3, 4, 6, 12. 24, 48, 72, 96, 120, 144, 168, 180, 360 | 2, 3, 4, 6, 12, 24, 48, 72, 96, 120, 144, 168, 180, 360 |
Instrument specifications (MPa) | 0 to 5, 0 to 10,…, 0 to 30 | 0 to 30, 0 to 40,…, 0 to 60 | 0 to 10, 0 to 15,…,
0 to 138.7 | 0 to 10, 0 to 15,…,
0 to 100 |
Dimensions (mm) | Φ36×1, 415 | Φ36×1, 415 | Φ36×1, 880 | Φ36×1, 880 |
Weight (kg) | 6 | 6 | 7 | 7 |
4. Formation Testing Pressure Gauges
● Introduction
It can be used with formation tester or other tools to measure the pressure of formation and to record the variation of formation pressure. The instrument is put into a special carrying cylinder before running downhole with tubing.
● Specifications
● Max Pressure (MPa): 19, 32, 44, 62, 95, 130
● Max Temperature(℃): 60, 90, 120, 150, 180, 200
● Clock Series (hour): 24, 48, 72, 96, 192
● Linearity: ±0.25%F·S
● Repeatability: ±0.25%F·S
5. Pressure Gauge Calibrator
● Introduction It is mainly used for the calibration of various pressure gauges, pressure instruments and thermometers used in the oilfields. ● Features ● The pressure recorders to be calibrated are mounted in the thermostatic air bath and the pressure is supplied by the standard piston pressure gauge. ● The calibrator has heating and cooling functions and the temperature can be controlled automatically by means of PID technology. ● The heat transmission medium convectionally circulates in the thermostatic air bath with the help of the centrifugal fan to ensure the stability and equilibrium of the temperature field. |  |
● Specifications
Pressure accuracy (%)
| ±0.005
|
Pressure range (MPa)
| 1 to 60
| 1 to 100
|
Vertical temperature field (℃)
| ±1
|
Temperature field fluctuation (℃/h)
| ±0.5
|
Temperature error (℃)
| ±1
|
Heat-up rate (℃/h)
| ≥80
|
Cooling rate (℃/h)
| 20 (cooling)
|
Temperature range (℃)
| -30 to 200, normal to 200，
|
Volume of heating chamber (mm)
| 280×280× (800 to 1, 500)
|
Effective temperature control range (mm)
| Φ200× (600 to 1, 200)
|
6. Automatic Pressure Gauge Calibrator
● Introduction
It can meet the calibration requirements of different kinds of electronic pressure gauges, mechanical pressure gauges and thermometers.
● Features
● Automatically carry out the whole calibration process including pre-loading, loading, load-keeping, load-decreasing, unloading to zero and recycling, etc.
● Automatically correct the load in accordance with local acceleration of gravity, density of air, real time temperature of piston, rigidity variations of the piston and difference of liquid level, etc. that may affect the accuracy of the pressure.
● Two constant-temperature units: oil bath and air bath
● Provide pressure curve and temperature curve for dynamic view of the calibration
● Specifications ● Pressure uncertainty: ±0.02, ±0.01% ● Pressure range: 1 to 60 MPa, 1 to 100 MPa, 2 to 150 MPa ● Minimum pressure increment: 0.1 MPa ● Compensation range for the pressure affected by temperature: 10 to 30 ℃ ● Within accuracy range, pressure maintained ≥72 hours ● Thermostatic Bath: Air Bath ● Temperature: Select within ¨C30 to 371 ℃ ● Temperature field error: ±1 ● Temperature field fluctuation: 0.5 ℃/h |  |
● Temperature resolution: 0.1 ℃
● Heat-up rate: ≥80 ℃/h
● Working chamber: 280×260× (800 to 1, 750) (mm)
● Effective temperature control range: Ф200×(600 to 1, 500) (mm)
● Working voltage: 220 VAC 50 Hz Heat-up power: 1.5 to 4 (kW)
● Calibration period of piston pressure gauge: two years
7. Electromagnetic Flowmeter
● Introduction It is mainly used to measure the flow of injection in formation of the injection well, which can provide evidences for the modification of injection plan and for dynamic monitoring of the oilfield. ● Features ● It runs downhole on a slick line and tests the velocity of center flow and can also conduct seating test. ● High-temperature rechargeable battery can work continuously for 40 hours. ● The testing results will not be influenced by specific property parameter of liquids. ● The Windows-based system is elegant in appearance, simple in operation and convenient in online help. It can fulfill the tasks as calibration, parameter set-up, data playback and processing, saving and printing of testing reports and graphs. |  |
● Specifications
Test range (m3/day with 2.5 inches injection pipe)
| 0 to 500
|
Uncertainty (F·S)
| ±2%
|
Memory capacity (group)
| 8, 000
|
Continuous working time of battery (hour)
| 40
|
Maximum working pressure (MPa)
| 50
|
Maximum working temperature (℃)
| 125
|
Water injection mandrel ID (mm)
| ≥46
|
Dimensions (diameter × length mm)
| Ф43×1, 550、Ф38×1, 550
|
Weight (kg)
| 8.5
|
8. Pumping Well Tester
● Introduction
The tester is mainly used for the measurement of liquid level, dynamometer diagrams, valve leakage as well as current dynamometer diagrams and casing pressure as required of pumping wells. This equipment integrates the functions of analogy acquisition, digital acquisition, paper recording and LCD display. Three kinds of load sensors are optional including, pressure plate shutdown type, hydraulic non-shutdown type and column fixation type. Two kinds of sounders that go with the tester are available: the bullet gun and gas gun.
● Features
● Timed by automatic clock CMOS chip; man-machine interactive interface
● The dynamometer diagrams transmitted via cable or by radio
● The liquid level and dynamometer curves displayed on the LCD
● Automatically stored results, optical code displacement
● Diversified liquid level calculation methods for users to select
● Intelligent sound speed upgrading, convenient sensitivity adjustment
● Various load sensors for users to choose
● Specifications
Measurable liquid level depth | 2, 500 m (when the casing pressure
≤0.5 MPa) ; 3, 300 m (when the casing pressure (0.5 MPa) | Curves storage capacity | Liquid level: 100 pieces; dynamometer diagrams:
120 pieces |
Uncertainty of running chart | ≤0.2% | Chart running speed | 100±0.5%mm/s |
Load | 0 to 140 kN | Accuracy | ±1%F·S |
Displacement | 0 to 8 m | Accuracy | ±1%F·S |
Radio
transmission distance | 30 m | Working temperature | -30 to ＋55 ℃ |
9. Memory Dynamometers
● Introduction
Memory dynamometer adopts advanced 96 series monolithic computer and power saving devices, integrates acquisition and display in one compact body. It is mainly applied to test the displacement vs load and displacement vs current dynamometer diagrams of pumping wells, to display and print these diagrams at the well site. Memory dynamometer has remote-measuring function. Two types of memory dynamometer are available: one of which can only be used when the pumping unit is shut down, while the other can be used without shutting down the pumping unit.
● Features ● Small and portable; conveniently measuring; no cable required (for the one body type and remote measuring type) ● Dynamometer diagram observed through the liquid crystal display and printed out through micro-printer ● Two types are available (one needs shutting down the pumping unit, while the other does not) ● High ratio of performance to price ● Modular structure and easy for maintenance |  |
● Specifications
| Shut-down Type | Non-shut-down Type |
Load | 0 to 140 kN accuracy:
±1%F·S (pressure plate) | 0 to 45 kN, Accuracy: ±3%F·S;
0 to 80 kN, Accuracy: ±3%F· S; 0 to 140 kN,
Accuracy: ±3%F·S (Hydraulic) |
Displacement | 0 to 8 m Accuracy: ±1%F·S |
Memory capacity | 50 cards | 100 cards |
Continuous working time | 6 to 8 h |
Operating temperature | -20 to +55 ℃ (low) ; 0 to +55 ℃ (normal) |
Transmission distance by radio |
| 50 m |
10. Dynamometer Calibrator
● Introduction
Dynamometer calibrator can realize static calibration of load, current and displacement of dynamometer and chart-running speed calibration for echometer and can simulate load-displacement dynamometer diagrams and current-displacement dynamometer diagrams. It can be used as a general pressure tester when it is mounted with a signal interface and can automatically calibrate common load sensors, displacement sensors and voltage output, and the data can be automatically read into, processed and printed out.
● Features
● All graphic interfaces, Windows 2000, programmed with VISUAL BASIC 6.0 language (with better human-machine interface), which makes it easy to maintain and upgrade.
● Digital and analog display panel. The values in the calibration process can be displayed in digital and analogue modes. The position of the ball guide screw can also be displayed in digital and analogue modes. The loading and unloading directions of the load motor are displayed in analog mode.
● User-friendly software interface to realize simple installation and easy operation
● As the data measurement and control are realized via industrial PC and a multi-functional interface board especially designed for the industrial PC, the system is highly integrated and reliable.
● Semi-automatic and automatic operation methods make the operation easy and flexible.
● As the transmission is performed by a specially made step motor of big torque and the pressure is adjusted with a ball guide screw of great travel, the device enjoys high speed, low noise, stable process, high accuracy and low maintenance requirement.
● Power-off protection provided by the UPS
● The calibration results and reports can be processed and printed out automatically.
● The system can automatically calibrate dynamometer, pumping well tester and read in the measured values of dynamometer automatically, fill in the calibration sheet and calculate, process and print reports. The report forms can be stored, read, inquired about and printed out.
● Multi-protection measures (hardware and software) can efficiently prevent the system from being overloaded and over-traveling.
● Graceful in appearance, small in size and light in weight
● Specifications ● Load: 0 to 150 kN, Uncertainty: ±0.3%F·S ● Displacement: 0 to 12 m, Uncertainty: ±0.3%F·S ● Current: 0 to 150 A, Uncertainty: ±1%F·S ● Power supply: 220 VAC, 50 Hz ● Calibration of chart-running speed of echometer: ● Amplitude: 0 to 1 V ● Period: 10, 20, 100, 200 and 500 ms ● The frequency of strokes for the simulation of load-displacement dynamometer diagrams and the simulation of current-displacement dynamometer diagrams can be chosen from 2, 25, 5, 75 strokes per minute. Analog load values are within 20 to 60 kN, and the analog current values are between 20 to 80 A. |  |
11. Echometers
● Introduction
Echometer is a two-channel echometer featuring rational structure, easy operation and lightness. It is mainly used to measure the dynamic liquid-level depth or the static liquid-level depth in the pumping wells and casing pressure at well head. Reservoir pressure, downhole pressure and their changes can be calculated according to the height of the liquid column in the casing and the pressure changes to determine the recovery efficiency of the reservoir. Echometer consists of the primary instrument (sound generator) and the secondary instrument (recorder) and the charger.
● Specifications ● Working pressure of the primary instrument: 8 MPa, 10 MPa, 16 MPa, 32 MPa ● Chart running speed of the secondary instrument: 100±0.5%mm/s, Instability of the running chart: ≤0.2% ● Measurable liquid level depth: 2, 500 m (when the casing pressure ≤0.5 MPa), 3, 000 m (when the casing pressure ＞0.5 MPa) ● Ambient temperature: -30 to 55 ℃ ● Measurable casing pressure range: 0 to 10 MPa, 16 MPa, 32 MPa ● Resolution: 0.01 MPa |  |
● Dimensions of the instrument: primary instrument: 330×240×240 mm, weight: 5.5 kg; Secondary instrument: 360×280×175 mm, weight: 9.5 kg
● 100 well times after being fully recharged. (Supplied with special charger)
12. Truck-mounted Well Testing Equipment
● Introduction
Truck-mounted well testing equipment is used to load well testing system and wireline winch, applicable for the measurement of pressure and temperature in oil/gas and water wells, and also for oil well wax removal and fishing operation.
● Specifications
Chassis
| NJ6686SJF5 4×2
| NJ6596SFF 4×2
| EQ6689PT 4×4
|
Engine | SOF1M8143.43/
SOF1M8143.43S, 87 kW
| SOF1M8140.23/
SOF1M8140.43C, 76 kW
| EQB125-20, 92 kW |
Torque
| 269 N.m/1, 900 rpm
| 240 N.m/1, 900 rpm
| 410 N.m/1, 500 rpm
|
Wheelbase (mm)
| 3, 950
| 3, 310
| 3, 650
|
Dimension (mm3)
| 6, 870×2, 000×3, 112
| 5, 980×2, 000×3, 112
| 6, 700×2, 240×2, 670
|
Gross Weight (kg)
| 5, 000
| 4, 000
| 6, 400
|
Max hoisting capacity of the winch (kN)
| 10 | 10 | 10 |
Wire OD mm (in)
| Ф2.4 (0.1)
|
Wire running speed m/h
| 180 to 8, 000
|
Max testing well depth m (ft)
| 6, 000 (19, 685)
|
13. Skid-mounted Well Testing Equipment
● Introduction
Skid-mounted Well Testing Equipment is used to load well testing system and wireline/slick line winch, applicable for the measurement of pressure and temperature in oil/gas and water wells, and also for oil well wax removal and fishing operation.
● Specifications
Engine model
| 4BT 3.9-C77
| EQB180-20
| Y225M-4-37-B35
|
Engine power kW (Hp)
| 77 (104)
| 132 (177)
| 37 (50)
|
Engine rotating speed r/min
| 2, 500
| 2, 500
| 1, 450
|
Max hoisting capacity of the slick line winch kN (lbf) | 15 (3, 372) | 15 (3, 372) |
|
Winch capacity m (ft)
| 7, 000 (22, 950)
| 7, 000 (22, 950)
|
|
Slickline OD mm (in)
| Φ3.175 (0.125)
| Φ3.175 (0.125)
|
|
Slick line running speed
m/min (ft/min) | 3 to 167 (9.8 to 548) | 3 to 333 (9.8 to 1, 093) |
|
Max hoisting capacity of the Wireline winch kN (lbf) |
| 35 (7,868) | 35 (7,868) |
Winch capacity m (ft)
|
| 7, 000 (22, 950)
| 4, 000 (13, 123)
|
Wireline OD mm (in)
|
| Φ5.6 (0.22)
| Φ8 (0.32)
|
Wireline running speed m/min (ft/min) |
| 1 to 100 (3.3 to 328) | 3 to 117 (9.8 to 384) |
Overall dimensions (mm)
| 3, 445×2, 020×2, 530
| 6, 060×2, 440×2, 890
| 4, 700×2, 050×2, 100
|
