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JWY-1 Probe
PRODUCT PARAMETERS
Description
JWY-1 Fluid Temperature & Conductivity Probe
Abstract
AbstractJWY-1 Fluid Temperature & Conductivity Probe can be used to measure the fluid flow rate in boreholes in the hydrology, geology, coal field, petroleum and other industries. It can distinguish the flow direction and flow rate of the fluid in the borehole axis. After the aperture conversion, the flow rate of the fluid flow in the hole can be calculated, and the water level drop and well temperature can also be measured.
Applicable Conditions
● Cased
● Open hole
● With water or mud
Applications
● Pumping test calculation
● Identify aquifer locations
● Verify penetration zone
● Casing Leak Detection
Features
● The sensor uses a pt100 platinum resistor with a small time constant, which can quickly respond to changes in the temperature of the formation.
● The fully solid-state sensor has good seismic resistance.
Specifications
| Flow velocity measurement range | 13~1500mm/s, Measurement accuracy: 2%F.S, Resolution: 0.2mm/s |
| Water level measurement range | 0~400m, Water level measurement accuracy: ±10mm, Resolution: 2mm |
| Applicable aperture | Φ55~Φ200mm |
| Continuous logging speed | ≤1000 meters/hour |
| Point measurement | Record flow rate-time curve, water level-time curve |
| Signal output | Bipolar encoding |
FAQ
In gravity exploration (SI), what is the unit of gravity? How to convert gravity units between SI and CGS?
① In SI, it is m·s-2, and one percent of it is the international unit abbreviation g.u.;
② Conversion between SI and CGS: 1g.u.=10-1 mGal
What are gravitational field and gravitational potential?
Gravitational field: The space around the earth with gravity is called the gravitational field.
Gravitational potential: The gravitational potential W in the gravitational field is equal to the work done by a particle of unit mass moving from infinity to that point.
What is the normal gravity field of the earth? What are the rules for the change of the normal gravity field with latitude and altitude?
① The normal gravity field of the earth: Assuming that the earth is a rotating ellipsoid (reference plane), the surface is glossy, the internal density is uniform, or it is distributed in concentric layers, the density of each layer is uniform, and the deviation of the shape of the ellipsoid from the geoid is very small, then the gravity field generated by the earth is the normal gravity field.
② The normal gravity value is only related to the latitude, the smallest at the equator and the largest at the poles, with a difference of about 50,000 g.u.; the rate of change of the normal gravity value with latitude is the largest at 45° latitude, and zero at the equator and the poles; the normal gravity value decreases with increasing altitude, and its rate of change is -3.086 g.u.. The main feature of the long-term change is the "westward drift" of the geomagnetic elements, both the dipole field and the non-dipole field drift westward, and have a global nature.
What is the relationship between gravitational field strength and gravitational acceleration?
The gravitational field strength is equal to the gravitational acceleration in both numerical and dimensional terms, and the two are in the same direction. In gravity exploration, all references to gravity refer to gravitational acceleration. The gravitational field strength at a point in space is equal to the gravitational acceleration at that point.
What is gravity exploration?
Gravity exploration is an exploration method that is based on the density difference of rocks and ores. Since density difference will cause local changes in the normal gravity field of the earth (i.e. gravity anomaly), it is used to solve geological problems by observing and studying gravity anomalies.
