OUR SERVICES
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Casehole logging
Casehole logging1. Production or injection profile well logging
Production logging is the measurement of fluid parameters on a zone by zone
basis to yield information about the type and movement of fluids in and around
the wellbore. Production logging is the standard method to evaluate both
producing and injecting wells. In a more limited sense production logs will also
diagnose problems encountered downhole whether it be a mechanical problem
such as a leak or a channeling problem resulting in unwanted production. As
existing reserves decline, the demand for sophisticated logging procedures to
maximize hydrocarbon recovery is increasing continually.
Application:- Establishing production or injection flow rates
- Establishing production or injection profiles
- Monitoring formation fluid interface movement
- Channeling of fluids behind casing or tubing
- Coning of fluids upward and or downward
- Crossflow between two or more zones
- Thief zones
- Mechanical leaks of tubing or casing
- Water breakthrough
Name Fluid phase state Combination instrument Flowmeter Fluid Density Water Hold-up Pressure Temperature GR CCL 7-Parameter logging Multi-Phase fluid √ √ √ √ √ √ √ 5-Parameter logging Single-Phase fluid √ × × √ √ √ √
2. Tubing and casing damage detection(MID-K)
Application:- Monitor the casing and tubing status of single - and multi-column structures in oil, natural gas and other Wells.
- Detected and measured two groups of pipe string at the same time to find out the transverse and longitudinal damage of pipe.
- Carry out a general survey of the downhole status of the oil field, find out the deformation and damage of the oil pipe and casing in time, predict the service life of the string, and improve the management of oil and gas well.
- Stable performance, low failure rate, high logging success rate, high data qualification rate.
- Small diameter, can be measured through the tubing, do not lift the string.
- Combination with multi-arm diameter to further improve the accuracy of string damage judgment.
Parameter MID-K Range of Inner and outer diameter of the string Minimum ID (mm) 62 Minimum OD(mm) 324 Wall thickness range Monolayer Minimum wall thickness (mm) 4 Maximum wall thickness of single layer (mm) 16 Maximum wall thickness of two layers (mm) 25 Wall thickness accuracy 2.5" Single-layer pipe String (mm) ±0.5 5 "single-layer pipe String (mm) ±0.7 Measuring 5.5 "casing (mm) through tubing ±0.5 Test the 5 "casing (mm) in the 10" casing ±1.5 Minimum longitudinal accuracy Tubing 2.5 "(mm) 30 Casing 5 "(mm) 40 5.5 "casing (mm) through tubing 70 Minimum Resolution (mm) 1/4 perimeter Temperature Rating(℃) 150/175 Pressure Rating (MPa) 100/140
3. Cementing Evaluation (SBT & RBT)
(1) SBT cementing evaluation logging tool -8 generating 8 receiving 8 sector acoustic cementing evaluation logging tool
Instrument by the same cross section 8 sector and eight receivers, each sector and at the same receivers composed of a group, detecting section 45° respectively within the scope of the cement bond, handles large detection range, no mud, oil-based mud, casing wall thickness, is currently checking cementing quality and tube channeling the latest one of the most effective logging instrument.
(2) RBT cementing evaluation log - eight-sector acoustic cementing quality logging tool
Consists of the upper electronic section, the sonde section and the lower electronic section connected together into one complete logging instrument. The sonde section has a rigid steel slotted sleeve housing containing single transmitters and six receivers. and the receivers (R2 ~ R6) is used for high-resolution acoustic moveout measurement to provide acoustic velocity curve of formation and obtain formation porosity. The receiving probes R1, R5 and R6 are combined for cementing evaluation logging in casing Wells to provide eight-sector cementing curves and acoustic amplitude variation density curves.
Tool specifications:
Length (combination length) 3170mm Transportation length 3750mm Weight 78Kg Diameter 70mm CBL offsets 1787mm VDL measuring point 2397mm Time difference measuring point 2016mm
4 Gyro inclinometer
The Gyro inclinometer Sonde provides highly accurate positional information in boreholes as small as 76 mm (3.0 in.) in diameter. It is designed to operate in steel cased boreholes where conventional magnetometer-based verticality tools cannot function.
The tool operates on the principle that the spin axis of a rotating gyro maintains a fixed position with respect to the earth, regardless of the orientation of the outer casing. By measuring the relative positions of the casing and the spin axis, the tool orientation can be deduced.
Standard output (identical to that from the VO Series Verticality tools) includes graphical presentations of cross section (polar position plot) for up to 10 depth levels, vertical sections and depth correction (True Vertical Depth) analysis. Additionally, all data is presented in a tabular format that includes lateral and polar co-ordinates.
Measurements- Azimuth from gyroscopic inertia
- Azimuth from magnetometers
- X and Y tilt measurements
- Sonde navigation data
- Borehole trajectory
- Continuous borehole tilt and azimuth in steel cased slim boreholes
- TVD analysis
- Default tabular presentations of borehole lateral and polar co-ordinates at all depths
- Differences between inertial and magnetic azimuths can indicate magnetically anomalous zones
Tool specifications:
Range and error of borehole bevel 0°~ 90° ±0.1° Range and error of azimuth Angle of deviation 0° ~ 360° ±2°
（6°<inc<60°）Gravity high edge range and error 0° ~ 360° ±0.5° North-facing tool surface range and error 0° ~ 360° ±2° Operating temperature range 0℃ ~ +70℃ （Normal room temperature）
0℃~+175℃ (with thermal insulation, working at 175℃ for 4 hours)Measure time for each set of data ≤70s
