• Xưởng sửa chữa và chuẩn chỉnh máy địa vật lý

    Xưởng có nhiệm vụ chính là bảo dưỡng, sửa chữa và hiệu chỉnh các máy móc thiết bị điện tử phục vụ cho các đơn vị trong Xí nghiệp địa vật lý giếng khoan. Ngoài ra xưởng còn nghiên cứu đưa vào ứng dụng và phát triển công nghệ tin học trong công tác địa vật lý

  • Trung tâm Phân tích và Xử lý số liệu

    Có nhiệm vụ đánh giá chất lượng tài liệu do Xí nghiệp Địa vật lý thực hiện.

  • Đội công nghệ cao

    Khảo sát địa vật lý tổng hợp trong giếng đang khoan. Đo địa vật lý tổng hợp, bắn mìn.

  • Đội Kiểm tra công nghệ khai thác

    Có nhiệm vụ là đo khảo sát và kiểm tra công nghệ khai thác trong các giếng khai thác và bơm ép.

  • Đội Carota khí

    Đội Carôta khí có nhiệm vụ chính là khảo sát carota khí, cung cấp kịp thời các số liệu để xác minh trữ lượng, tình trạng các giếng khoan.

  • Đội thử vỉa

    Đội có nhiệm vụ thử vỉa ở các giếng khoan nhằm định hướng cho công tác khoan, xác định tình trạng và đo vỉa, cung cấp thông tin để xác định trữ lượng công nghiệp của giếng

L&TD

LOGGING & TESTING DIVISION

XÍ NGHIỆP ĐỊA VẬT LÝ GIẾNG KHOAN - BẠN ĐỒNG HÀNH CỦA CÁC NHÀ DẦU KHÍ

Open hole logging

MWD/LWD

I/ INTRODUCTION

Measuring the properties of geological formations and reservoir fluids has traditionally been performed with logging tools run on an electric wireline, a technique that was developed in the 1920’s.

Read more ...

CAST-V Circumferential Acoustic Scanning Tool-Visualable

CAST-V – A COST-EFFECTIVE TOOL TO EVALUATE THE POTENTIAL ZONES IN FRACTURED BASEMENT.

The newest generation Circumferential Acoustic Scanning tool, the CAST-V made by Halliburton, provides a wealth of information in both open and cased holes. In open holes, the CAST-V provides complete borehole imaging for accurate formation evaluation. In cased holes, ultrasonic pipe inspection and cement evaluation can now be obtained simultaneously.

Operating over a wide range of downhole environments, the CAST-V data can be presented in a variety of two- and three- dimension formats. Powerful, yet user-friendly imaging analysis software is available to process the images, histograms and curve-type data.

    

Specifications

 Temperature

 Rating

 Pressure Rating

 OutsideDiameter

 Length

 Weight

350oF 20,000psi 3.625 in. 215 in. 316 lb

175oC 137900 kPa 92 mm 5.46m 143 kg


Openhole Operation

Recommended

Range of

Openhole Sizes

5 1/2 to 13 3/8 in 139 to 340 mm
Azimuthal Resolution
1.8o
Vertical Sample Rate
0.3 in.
Logging Speed
20 ft/min.
Vertical Resolution
0.3 in.
Accuracy
±5%
Primary curves Max. reflected amplitude and time of fight for each shot (200 shots/scan), borehole fluid slowness
Secondary curves
Amplitude and borehole radius images (200 dots/scan), hole ovality, tool eccentricity, hole deviation, and tool RB
with interchangeable transducer heads

Primary applications include:

• Open Hole Borehole Imaging.

• Fracture Detection.

• Casing Inspection (Both Thickness And Diameter).

• Ultrasonic Cement Evaluation/ Imaging.

CAST-V HAS BEEN USED POPULARLY BY L&TD, VSP FOR STUDYING THE CHARACTERISTICS OF FRACTURES IN BASEMENT, CUU LONG BASIN.

The energy levels of reflected ultrasonic wave have been used:

- To locate the fracture zones.

- To differentiate between open fractures and filled fractures.

- To determine the geometric characteristics of fractures: dip, azimuth dip, and aperture.

In fact, surveys in basement of Cue long basin indicated that CAST-V is the most effective tool for studying basement fractures.

This open-hole CAST-V imaging was logged from fractured basement reservoir of White Tiger oil field. The upper plot shows clearly the open fractures both on amplitude (left) and transit time (right). These fracture zones are highly productive zones.

This plot clearly shows the closed fractures both on the amplitude (left) and transit time (right). These fracture zones are non-productive zones

          A productive zone was identified by CAST-V and traditional log (LLD, LLS, DT, NPHI, RHOB etc) measurements. This was confirmed with production logging data

Nhóm Marketing

High Resolution Induction

HRI Tool specification
Deep Medium Shallow
Max Temp
3500F (1750C)
Max Press
20 000 psi (137 900 kPa)
Max hole
4 in (102 mm)
Min hole
24 in (610 mm)
Range
0.1 to 2000 ohm.m
Vertical Resolution (90%)
12 or 24 in30.5 or 61 cm 12 or 24 in(30.5 or 61 cm)
<17 in (<43cm)
Depth of Investigation (50%)
91 in 231 cm 39 in(99.06 cm)

<17 in (<43cm)

Sensitivity

±0.25 ohmm

±0.25 ohmm

±0.1ohmm

Accuracy
± 1% or ± 1 ohmm ± 1%or ± 1 ohmm

±0.1ohmm

Depth of Investigation (50%
3 to 20 ft 1 to 3m
± 2%
    Primary Curves
HRd, HRm, DFL, HR90, HR60, HR50, HR40, HR30, HR24
   Secondary Curves
SP
     Commercial Performance In Today’s Search for Hydrocarbons. The High Resolution Induction log from Halliburton offers superior vertical resolution and significantly greater depth of investigation than conventional induction logs. The HRI tool produces three primary measurements: a deep induction (HRd), a medium induction (HRm), and a digitally focused resistivity (DFL). Reading 40% deeper than ILd measurements, HRd measurements can resolve beds as thin as two feet and are accurate in beds thicker than three feet. The HRd, HRm, and DFL all have similar vertical resolution. Our innovative processing provides a log in real time, at the wellsite. Plus the HRI’s symmetric array provides a more robust, error-free log.
            As the search for new oil and gas resources contin­ues, more and more explo­ration and development is targeted toward so-called unconventional reservoirs. Drilling objectives include interceded sand-shale sequences, thin beds, low-resistivity pay sands, and beds with little resistivity contrast from their sur­roundings. While the detection and evaluation of many of these reservoirs often exceed the capabili­ties of conventional resis­tivity devices, significant technical advancements allow HRI tools to locate and provide accurate information about such zones, which may otherwise be bypassed

                 Thin beds

Reservoir intervals less than 10 feet thick comprise numerous primary and secondary exploration and development objectives. Utilizing reduced shoulder bed effects and improvements in vertical response, HRI logs resolve beds as thin as 2 feet. 

                 Laminated Sand-Shale Sequences

Marine depositional environments and fluvial flood plains commonly contain laminated sand-shale sequences. Decreased shoulder response and improved vertical resolution again enhance interpretation in these situatio

               Additional Secondary Objectives

By detecting thin beds and using quadrature processing to improve tool response, HRI logs can locate additional, potentially productive zones not indicated by other logging devices. While some primary objectives may not require HRI advantages for evaluation, HRI logs can illuminate secondary production possibilities for completion attempts. Without HRI information, numerous profitable secondary objectives could be permanently overlooked.

Groningen-Effect Environments

Below massive, highly resistive formations, deep laterolog devices read abnormally high resistivities. This phenomenon is known as the Groningen-effect and normally masks any productive zone below the massive resistive bed. HRI logs display no Groningen-effects.

Oil-Base Muds

Focused resistivity devices such as laterolog, spherically focused, and microspherically focused tools are designed to operate in an electrically conductive borehole medium and thus do not function effectively in oil-base muds. This requirement is not applicable to HRI tools; consequently, they are able to operate in oil-base muds and air-filled boreholes.

Turbidites

Deeper water exploration targets and many land prospects commonly include turbidites, which are high-energy submarine depositional environments encountered near continental shelf margins. The superior vertical resolution offered by HRI measurements can improve the evaluation of thin beds contained in turbidite sequences.

Deep Invasion

Typically, deeply invaded formations are associated with moderate permeability, medium to low porosity, high-water-loss muds, overbalanced mud systems, and drilling operations in pressure-depleted reservoirs. By investigating 1.4 times deeper than conventional induction devices, the HRI tool explores past the invaded zone to improve true resistivity measurement accuracy.

Nhóm Marketing

Electrical Micro-Imager

EMI – COST-EFFECTIVE TECHNOLOGY FOR FORMATION AND RESEVOIR EVALUATION

Tool specification

Maximum Temperature
350°F

177°C

Maximum Pressure
20,000 psi 
137 900 kPa
Measurement Range
0.2 - 5000 ohm m
Resistivity Imager
30 in.

762 mm

Dipmeter Processing
0.9 in
23 mm
Resolution
0.2 in.
5.08 mm
Maximum Hole Size
21.00 in
533 mm
Minimum Hole Size
6.25 in.
159 mm
    Number of Buttons
150
   Number of Pads
6 (fully independent)
              In today’s economically-sensitive energy world, thorough and cost-effective reservoir evaluation is more important than ever before. Halliburton’s Electrical Micro Imaging (EMI™) service is a new process designed to meet these needs by producing core-like electrical micro-conductivity images of the formation sequence encountered in the wellbore.

Based on the Award-Winning Six-Arm Dipmeter (SED ™) Technology. The mechanically proven architecture of the EMI is based on six articulating pads, each mounted on an independent arm, allowing improved electrode-to-formation contact. Quality formation images are achieved using 150 pad-mounted sensors distributed 25 on each of the six pads. This results in a measurement resolution of 0.2 inches. Conventional dipmeter information is recorded in addition to the image data.

Operating Principles The EMI tool provides an image of the borehole wall by measuring and mapping formation micro-conductivity with the pad-mounted button electrodes. Current is emitted from the lower section of the tool into the formation. Part of this current (survey current) flows from the pad-mounted buttons, but the rest (focusing current) is used for focusing and maintaining high-resolution measurement. The current of each button is recorded as a curve, sampled at 0.1 inch (0.25 centimeters), or 120 samples per foot. The curves reflect the relative micro-conductivity variations within the formation. These current variations are converted to synthetic color or gray-scaled images. Light colors represent low micro-conductivity, while dark colors reflect high micro-conductivity zones.

Centralization above and below the EMI mandrel optimizes the distribution of the six pads across the circumference of the borehole, especially in horizontal and highly deviated wells.

A full navigation package, consisting of three orthogonal fluxgate accelerometers and three orthogonal magnetometers, is included in the EMI tool to provide accurate information on tool position, motion, direction, and orientation within the borehole. The enormous amount of data acquired while logging is transmitted digitally to the surface unit via Halliburton’s proven Digital Interactive Telemetry System (DITS).

IMAGING – THE KEY TO BETTER ANALISYS

Real-time images are produced at the wellsite. Detailed post-acquisition analysis of the image data is made with high-performance InterView ™ analysis software. Image analysis and enhancement techniques are available for precise identification of formation reservoir characteristics, including the following.

 
  • Detailed stratigraphic and sedimentological analysis. Identification and Characterization of Sedimentary Features
  • Thin bed delineation
  • Fracture analysis
  • Fault Identification and Orientation
  • Identification and Orientation of Secondary Porosity

Comparison of EMI image and fullbore core, showing abrupt fault with no associated drag.

Thin bed response of the EMI tool in a laminated sand/shale sequence.

Nhóm Marketing

Dipmeter

                                                                          Tool specification
 Resistivity
Azimuth
Rotation
Deviation
Calipe
Principle
*
High sample-rate accelerometer and magnetometer
6 independent
Max Temp
3500F (1750C)
Max Press
20000psi (137 900 kPa)
Max hole
20 in (510 mm)
Min hole
4.5 in (115 mm)
Vertical Resolution (90%)
0.3 in
na
na
na
na
Depth of Investigation (50%)
Formation-
dependent
na
na
na
na
Accuracy
na

±5o

±2o

±0.5o

±0.1 in

    Primary Curves
PDD, 1-6, AZI, HAZI, DEV, ROT, CAL 1-6
   Secondary Curves
Dip angle, dip AZI, borehole inclination
          

Six arm dipmeters employ six pad-mounted, focused current electrodes equally spaced about the main tool body. These electrodes measure resistivity at six azimuths about the borehole. These tools also measure borehole drift angle, drift azimuth, and borehole eccentricity. From this information software calculates the dip and strike of formations penetrated by the wellbore. The results are available in standard arrow, polar, and statistical plots and in tabular listings. These aid in identifying structural features such as regional dip, faults, reefs and unconformities. They also provide important information in determining depositional features such as cross bedding, foreset bedding and channel sand. Drift surveys, borehole profiles and fracture profiles are also produced from six-arm dipmeter measurements.

With their six independently sprung caliper arms and their swiveled pads, Six-Arm Dipmeter achieve uniform contact
with the borehole wall. Thus, they are better able to accommodate borehole irregularities in both the circumferential and axial senses. Tool centralization is not a critical factor, even in deviated wells, and the effects of irregular tool motion are minimal.

                        Six-Arm Dipmeters can be run in any type of borehole liquid survey, even in oil-base muds.

                         Application
  • Determine magnitude and direction of formation dip
  •  Identify structural and stratigraphic events.
  •  Identify fractures
  •  Provide drift survey
  •  Determine true vertical depth
  •  Determine exact location of bottom hole.
  •  Provide borehole profile and cement volume calculations

Nhóm Marketing

WaveSonic Log

WAVE SONIC - Halliburton's Third Generation Ultra-Reliable, Crossed Dipole Sonic Tool

THE BETTER KEY TO FRACTURE RESERVOIR EVALUATION

                                       Tool specification
Principle

Time‑slowness Δtc, Δtsxx and Δtsyy

Max Temp
350oF
175oC
Max Press
18 500 psi
127 600 kPa
Max hole
24 in
610 mm
Min hole
4.5 in
115 mm
Range
Dynamic
Vertical Resolution (90%)
6 in 15 cm
Depth of Investigation (50%
3 to 20 ft 1 to 3m
Sensitivity
na
Resolution
0.2 μs
    Primary Curves
Δtc, Δtsxx and Δtsyy
   Secondary Curves
Vp, Vs, Φc, ITTp, ITTs Semblance quality. Slowness Anisotropy, Poisson’s ratio, Stoneley slowness

Halliburton's WaveSonic crossed dipole sonic tool makes it easy to determine fast and slow shear wave travel times and their orientation in the formation. With the WaveSonic, you can even calculate minimum and maximum principal stresses and stress field orientation by combining oriented slowness data with overburden and pore pressure data. This information is vital for mechanical analysis, wellbore stability and production enhancement treatment design. Sonic anisotropy and the orientation of the anisotropy can be used to determine the orientation of natural fractures. Sonic attributes such as P wave slowness, fast and slow shear wave travel time, identification of compressive fluids in the pore space, and anisotropy orientation allow for better 3 D seismic analysis.

   This is an example of a semblance diagnostic plot of the waveform data from the eight waveforms. In the circle is a section of a WaveSonic log showing Monopole P wave slowness and semblance quality monopole refracted Shear wave
                                                           The Product of Superior Technology

Halliburton’s WaveSonic tool service provides simultaneous monopole and crossed dipole sonic information. P‑wave and S‑wave slowness can be obtained in formation conditions ranging from poorly consolidated high porosity gas saturated sandstones to low porosity carbonates. The flexural wave energy is propagated from a low frequency on‑depth crossed dipole bender‑bar source. The low frequency flexural wave travels at the true shear slowness of the formation. As a result, dispersion corrections for shear have slowness are not required. A low frequency monopole source is utilized, so the P‑wave and flexural wave data have similar depths of investigations well beyond any near wellbore alteration.

Other benefits include:

  • Low frequency monopole and dipole sources for deeper investigations of sonic slowness measurements beyond any near wellbore alteration effects
  • Broadband eight‑level, quad receiver array for high quality waveform data; all 96 waveforms for each set of transmitter firings are recorded at the surface for advanced waveform processing techniques
  • State‑of‑the‑art tool design is an extension of the robust Sperry‑Sun LWD BATTM Sonic.
  • Combinable with all openhole tools, including MRIL and RDTTM
  • On‑depth, low frequency bender bar source provides a clean source signal.

- No need for dispersion corrections for slowness determination.

‑ No depth shifting of waveform data for anisotropy analysis.

  • Robust tool isolator design allows for drill pipe conveyed operations; WaveSonic tool not limited to bottom of tool string

Nhóm Marketing

FullWave Sonic Log

Approximate OverallLength

• Standard configuration

• Extra-Long configuration

637 in. 728 in.
16.18 m 18.49 m
Temperature Rating
400°F
204°C
Pressure Rating
20,000 psi
137 900 kPa
Recommended Hole Sizes

•Minimum Borehole Diameter

•Maximum Borehole Diameter

4.5 in.
20 in.
445 mm
Transmitter

• Type

• Resonant Frequency

Piezoelectric, metal-covered 15 kHz
Receivers

• Type

• Frequency Response

Piezoelectric, metal-covered Flat from 700 Hz to 30 kHz
Transmitter-To-Receiver Offsets Standard Configuration Extra-Long Configuration Short Configuration
10, 11, 12,13ft 17.5,18.5, 19.5 and 20.5ft 3 and 5 ft
3.05,3.35,3.66,3.96m 5.33, 5.64, 5.94 and 6.25 m 0.91 and 1.52m

The sonic logging system developed by Halliburton provides more acoustic information than ever before.

From 1997, Vietsopetro L&TD successfully evaluated potential zones in fractured basement using FWST data. 

Using a piezoelectric transmitter and four long‑spaced receivers, the FWS system records the entire acoustic wavetrain. Digital processing techniques extract compressional, shear, and Stoneley t; shear wave and compressional wave amplitudes; and Stoneley wave attenuation. These basic measurements provide valuable information on rock types, gas zones, porosity naturally fractured intervals, formation elastic properties, stress field around the borehole, permeability, and acoustic impedance.

FWS APPLICATIONS

  • Improved porosity estimates using both tc, and ts
  • Lithology identification by means of velocity ratio, ts /tc
  • Location of gas zones, even in poor hole conditions and cased holes
  • Indication of permeability variations with depth from Stoneley wave attenuation
  • Detection of naturally fractured zones
  • Determination of rock elastic constants
  • Estimation of formation strength and least horizontal stress
  • Prediction of vertical extent of hydraulic fractures

FWST – An effective tool to evaluate the potential zones in fractured basement.

FWST has been used by Vietsopetro L&TD to investigate the characteristics of fractures in basement of Cuu Long basin. The tc, ts and tst and energy attenuation measurements have been used for:

- Detection of naturally fractured zones.

- Indication of permeability variations with depth from Stoneley wave attenuation.

- Lithology identification by means of velocity ratio, ts /tc

In fact, surveys in basement of Cuu Long basin indicated that FWST is an effective tool for evaluation of fracture zones in basement.


This FWS primary log example displays the raw waveform data from Receiver 1 in the right track. Processed results, including compressional and shear slowness curves (tc and ts), are shown in the center track, along with a shear slowness quality indicator Caliper and Gamma Ray information, along with a gain curve, are displayed in the left track

Instantaneous Waveform Characteristics IWC analysis allow users better evaluation of fracture zones as spectrum of amplitude, phase and frequency of waveform

This plot shows potential zones in White Tiger fractured basement by mean of the energy loss of Stoneley wave (Track 5). In fact, these zones are highly productive.

Nhóm Marketing

Borehole Compensated Sonic Log

Tool specification
Principle
Borehole Compensated Sonic
Max Temp
3500F
1750C
Max Press
18 500 psi
127 600 kPa
Max hole
17.5 in
445 mm
Min hole
4.25 in
108 mm
Range
40-190 µs/ft
131-623 µs/m
Vertical Resolution (90%)
2ft 0.610 m
Depth of Investigation (50%

<3 inμЅ

<76.2 mm
Sensitivity
na na
Accuracy:
±1 µs/ft ± 3 µs/m
    Primary Curves
∆tc(compressional slowness)
   Secondary Curves
Φc

Borehole Compensated Sonic tools determine the time required for a compressional sound wave to travel through one foot of formation. The travel time depends upon the formation's lithology, porosity, and type of pore fluid. Thus, if lithology and type of pore fluid are known, travel time can be related to porosity.

As an aid to interpretation of seismic data, the compres­sional travel times are integrated and the results indicated on the log. A tick mark appears on the log for each millisecond of elapsed time. The interval between tick marks indicates the depth interval through which sonic waves travel in 1 millisecond.

Compensated Sonic tools contain two acoustic trans­mitters and two acoustic receivers. The standard arrange­ment of these components results in travel time measure­ments made with transmitter-to-receiver spacing of 3 and 5 feet. The use of such multiple travel time measure­ments allows for compensation for borehole fluids, borehole rugosity, and tool tilt

Compensated Sonic tools are run in liquid-filled wells and should be centralized in the borehole. The tools can be combined with other tools such as Gamma Ray, Induction, Laterolog, Density, Neutron, and Caliper.

                                   
Applications:      
  •  Porosity analysis
  •  Lithology identification
  •  Abnormal pressure identification
  •  Velocity data for seismic studies
 

DT measurement in sedimentary rock

DT measurement  in basement

Nhóm Marketing

Dual Spaced Neutron Log

      Vietsovpetro L&TD uses Halliburton’s DSN II tools from 1997 for lithology & porosity identification for sedimentary and basement rock.

DSN II is a superior neutron porosity tool. This is due to detector array optimization. Far detector count rates are much greater than ever before. Other advantages stem from the ratio-porosity relationship. Detailed analysis shows that DSN II statistical uncertainty has been significantly reduced compared with previous top-performing tools, while the overall signal-to-noise ratio is notably better than before.

 

 

 

 

 

      
 

Tool specification

Max Temp
3500F (1750C)
Max Press
20 000 psi (137 900 kPa)
Max hole
20.75 in (529 mm)
Min hole
4.5 in (115 mm)
Vertical Resolution
3 in
8 cm
Depth of Investigation (50%)
6 in. (152.88 mm)
Sensitivity
1% reading
Precision
Low (1SD) ± 0.1 @ 3 p.u.
High (1SD) ± 0.3 @ 30 p.u.
Accuracy, Low
± 5% or ±1 p.u., whichever is larger
Primary Curves:
Neutron Limestone Porosity
Near-to-Far Detector Count-Rate Ratio
Secondary Curve
Near- and Far-Detector Count Rates
Source
AmBe

These features translate into porosity measurements with outstanding  precision. DSN II delivers porosity measurements with greater accuracy and repeatability than any other neutron porosity service. Designed for use in liquid-filled holes, both open and cased, this service provides:

  • Superior accuracy. Consistent measurements over the entire porosity range, even in cased holes.
  • Repeatable results. Optimized detector spacing, advanced calibration methods and greater count rates contribute to the service’s outstanding precision.
  • Improved thin bed evaluation. Clearer delineation of thin bed formations with Enhanced Vertical Resolution (EVR), available real time or in post processing.
  • Increased reservoir understanding. A combination of logging tools can be run to identify lithology, reveal gas zones and calculate shale volumes
  • Faster log runs. Save rig time with an optimized design that enables logs to be run at faster cable speeds
  • Gas detection. Excellent indication of gas when used in combination with a density log
  • Dykes detection. Excellent Effect of basement’s dyke identification when used in combination with a density log

?Nhóm Marketing

viagra pas cher - buyfrviagra.com - problèmes sexuels liés peuvent commencer début dans un style de vie ou qu'ils pouvaient suite Offres passionnant et rapports . Problèmes construire que le temps passe , ou peut-être peut se produire soudainement immédiatement en ensemble manque de capacité et s'impliquer dans un certain nombre d' stades de la acte à caractère sexuel. Les causes de l' problèmes sexuels liés pourrait être corporelles , psychologique ou les deux . Émotionnel facteurs qui influent sur le sexe culturels interne problèmes de santé mentale au sein de l' à l'intérieur du personne uniques. Interpersonnelles troubles complications comprennent matrimonial ainsi que questions ou pas assez avec parmi concernant partenaires. Personnalisé particulières problèmes psychologiques incorporer , sexe craintes ou culpabilité ou précédente blessure . Eventhough it peut paraître maladroit de parler avec votre médecin sur dysfonction érectile , {vont dans des | с | chercher | choisir | get {} une évaluation | une évaluation}. Questions ou essayant de garder peut être un warning de état de santé qui a vraiment besoin traitement , y compris maladie cardio-vasculaire ou terriblement contrôlé diabétique. Traiter un sous-jacent pourrait être pour aider à inverser votre problèmes érectiles .

viagra france - buyfrviagra.com - problèmes sexuels liés peuvent commencer début dans un style de vie ou qu'ils pouvaient suite Offres passionnant et rapports . Problèmes construire que le temps passe , ou peut-être peut se produire soudainement immédiatement en ensemble manque de capacité et s'impliquer dans un certain nombre d' stades de la acte à caractère sexuel. Les causes de l' problèmes sexuels liés pourrait être corporelles , psychologique ou les deux . Émotionnel facteurs qui influent sur le sexe culturels interne problèmes de santé mentale au sein de l' à l'intérieur du personne uniques. Interpersonnelles troubles complications comprennent matrimonial ainsi que questions ou pas assez avec parmi concernant partenaires. Personnalisé particulières problèmes psychologiques incorporer , sexe craintes ou culpabilité ou précédente blessure . Eventhough it peut paraître maladroit de parler avec votre médecin sur dysfonction érectile , {vont dans des | с | chercher | choisir | get {} une évaluation | une évaluation}. Questions ou essayant de garder peut être un warning de état de santé qui a vraiment besoin traitement , y compris maladie cardio-vasculaire ou terriblement contrôlé diabétique. Traiter un sous-jacent pourrait être pour aider à inverser votre problèmes érectiles .

viagra wiki - buyfrviagra.com- problèmes sexuels liés peuvent commencer début dans un style de vie ou qu'ils pouvaient suite Offres passionnant et rapports . Problèmes construire que le temps passe , ou peut-être peut se produire soudainement immédiatement en ensemble manque de capacité et s'impliquer dans un certain nombre d' stades de la acte à caractère sexuel. Les causes de l' problèmes sexuels liés pourrait être corporelles , psychologique ou les deux . Émotionnel facteurs qui influent sur le sexe culturels interne problèmes de santé mentale au sein de l' à l'intérieur du personne uniques. Interpersonnelles troubles complications comprennent matrimonial ainsi que questions ou pas assez avec parmi concernant partenaires. Personnalisé particulières problèmes psychologiques incorporer , sexe craintes ou culpabilité ou précédente blessure . Eventhough it peut paraître maladroit de parler avec votre médecin sur dysfonction érectile , {vont dans des | с | chercher | choisir | get {} une évaluation | une évaluation}. Questions ou essayant de garder peut être un warning de état de santé qui a vraiment besoin traitement , y compris maladie cardio-vasculaire ou terriblement contrôlé diabétique. Traiter un sous-jacent pourrait être pour aider à inverser votre problèmes érectiles .

Spectral Density Log

       In order to use the latest techniques in wireline logging and for more accurate lithology & porosity identification for sedimentary and basement rock, from 1997 Vietsovpetro L&TD has been using Halliburton’s Spectral Density Log Tools (SDL-T).

Spectral Density Log provides superior formation bulk density (rb) and borehole Compensated photoelectric factor (Pe) measurements. These measurements are key factors for

  • Accurate determination of formation bulk density
  • Reliable identification of formation lithology, regardless of formation fluid type
  • Precise delineation of thinly bedded formations (the unfiltered Pe curve is used)
  • Excellent indication of gas when used in combination with a neutron log
  • Excellent effect of basement dyke identification when used in combination with a neutron  log

 

 

 

Read more ...

Compensated Spectral Natural Gamma Ray

 Principle Gamma-ray spectroscopy
 Max Temp  3500F (1750C)
 Max Press 20000psi (137 900 kPa)
  Max hole 20 in (510 mm)
Min hole 4.5 in (115 mm)
 Vertical              Resolution(90%) standard 36 in. (917.28 mm) enhanced 18 in. (458.64 mm)
Depth of Investigatio(50%) 4 in. (90%: 11 in.) 102 mm (90%: 280 mm)
Precision (1 SD) ± 3% or ± 5 API whichever is larger
Accuracy: ± 5% or ± 5 API whichever is larger
Max hole 20 in (508 mm)
Primary Curves GRKUT, GRKT, GRTH Uranium, Thorium, Potassium Concentrations
Secondary Curves Fit Error, Stabilizer Counts, Noise, Source Factor, Uncertainties for each element
 
In order to use the latest technique of wireline logging and for more accurate lithology analysis of sedimentary and basement rock from 1997, Vietsovpetro L&TD has been using Halliburton’s CSNG™.

CSNG™ provides highly accurate measurements of potassium, uranium, and thorium by detecting the gamma rays they emit. The concentrations of these elements reveal petrological information to help ensure clean rock is not mistaken for shale or clay.

  For example: with a standard gamma ray log, high gamma ray counts are frequently interpreted as shale. In the same environment, the CSNG could correctly attribute high gamma ray counts to the presence of uranium or potassium and correctly identify the rock as a potential reservoir.

The CSNG measures the entire gamma spectrum, from 0 to 3000 keV, in both open and cased holes, producing both a primary and a quality log in real-time.

 

 

 

 

 

 

   

  • Detect producible zones by accurately distinguishing reservoir rock from those containing clays. Sandstones generally have low potassium and thorium concentrations compared to shale.
  • Increase reservoir understanding with CSNG data. Fractured or highly permeable reservoirs can be discovered when high uranium concentrations appear with low potassium and thorium concentrations. High uranium and thorium counts with low potassium counts indicate a clean reservoir containing accessory minerals.
  • Determine clay types, volumes, and caction exchange capacity using CSNG elemental concentration data.
  • Locate radioactive tracers using the CSNG in Halliburton’s TracerScan™ service.
  • Identify lithology or determine average casing thickness when the tool is run with the Low-Z case.
  • Basement’s fracture zones quick indicator. Using Uran-Thor-Pota ratio

Nhóm Marketing

Video

Quản lý online

Liên kết nội bộ

Giá dầu