LEAP 600B System 2

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Table of Contents

LEAP-600B Logging Platform ..1

LEAP-600B Heavy-Duty Truck.....4

Downhole Tools Diagram......5

LEAP Express Platform....6

Telemetry and Gamma-Ray Tool (TGR).....7

Temperature Tension Resistivity Tool (TTR)..8

Nuclear Electric Cartridge (NEC).........9

Resistivity Electric Cartridge (REC) ........9

Spectro-Gamma Ray Sonde (SGS)...10Compensated NeutronSonde (CNS).....12Hydraulic Pad-mounted Device (HAS)...14

Combined Logging Probe of LDS/MFS..15

MFS- Micro-Spherically Focused Logging........17

Dual Laterolog Sonde(DLS)..........................................................19

Dual Induction Logging Sonde (DIS).......21

High Resolution Acoustic Sonde(HRAS) ...23

Borehole Directional Sonde (BDS) ....25

Digital Hydraulic X-Y Caliper(XYC) 26

Flexible Joint Sub (FJS) .......................................................26

Digital Long Spacing Acoustic (DLSA)......27

Borehole Compensated Array Sonic (BCAS) .....28

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Digital High Resolution Dip LogDHRD...28

Pipe Conveyance Log (PCL) .....30

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LEAP-600B Logging System

Measurement Integrity and Data Quality

The LEAP-600B design is based on this fundamental concept quality in, quality out. Since

measurement integrity is the critical first step in reservoir characterization, the LEAP-600B system

incorporates advances in digital data acquisition and visualization technologies to ensure that you

receive prominent data:

Full recording of all instrument data from raw tool signals to fully processed curves

Optimized instrument operation in combination tool strings through multiple sampling rates for

sensors

Quality control through visual confirmation of all calibration values, verification values, and

measurement tolerances

Real-time quality control of spectral and acoustic services through information displays for raw

and processed data Real-time environmental corrections

Advanced Technology Services

The LEAP-600B system is an advanced data acquisition platform designed to give you the full

benefits of the new-generation downhole instrument. The system outputs both color and

gray-scale plots, and easily incorporates client-defined presentation formats. The LEAP-600B

acquisition system can support all the downhole tools developed by CNLC as well as the tools

from cooperated companies*.The LEAP-600B system offers great flexibility in data handling,

processing, and communications:

Multiple RISC-based CPUs operating at 76 MIPS each

Ability to handle new-generation data-intensive services and multiple service combinations

Direct print log plotting at speeds of up to 4 in./sec for gray-scale or up to 5 in./sec for color

plots

Raw data recording allows the application of future advances in data- processing techniques

to the original raw data

X.25 data communications

Full data communications with built-in security to and from client office locations, geoscience

centers, or other LEAP-600B units

High-definition color monitors for log viewing and data processing utilizing the X-WindowSystem"Motif"' graphic user interface

Removable electronic storage media using industry standard formats:

3'/2-in. floppy disk drive

1.3 Gbyte digital audio tape (DAT)

9-track tape

CD-R

*The LEAP-600B acquisition system supports all CNLCs down-hole tools and the tools produced by other

companies such as HLB, SLB, and Sondex. Down-hole tools and software such as XRMI, WSTT, CAST,

SFT\SFTT produced by other companies are all compatible with the LEAP-600B system.

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Safety for personnel, protection for Data and Equipment

The LEAP-600B system is designed to protect people, equipment, and the data being recorded.

Safety features incorporated into the LEAP-600B system include:

Non-circulatory well exposure minimized through reduced operating time

Well data preserved in case of an emergency shutdown through a certified uninterruptible

power supply (UPS) system

Ballistic operations safety and efficiency improved through a built-in wellhead potential

monitor

Ballistically safe wireless communication system between the units and operators on the rig

floor

Data security during communication through automatic data encryption

Real-Time Data Processing Platform

The LEAP-600B supplies a field version log analysis sofrware package. The field engineer andour client have the ability to process the logging data in real-time at the well site.

Data pre-processing: This is the basic system of the analysis software package; it includes depth

match, environments correction, and other data preparation functions.

Data processing:

This is the main part of the software, It includes Complex reservoir analysis, Sandstone analysis,

Stratagon structural Diplog analysis, MRIL logging data analysis, Acoustic waveform analysis,

Pressure transient analysis, Production logging data analysis

Data Communication

CNLC offers data communication services from the well sites to our Geoscience Centers or client

premises throughout the world, thus facilitating the decision processes associated with oil and gas

exploration and development. If desired, digital data and graphics may be transmitted

simultaneous with other logging operations. Our communications software packages include

compression techniques to reduce transmission time and provide the needed security for system

integrity. The systems can efficiently transport information across traditional dialup (PTT)

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networks, public or private wireless networks including cellular, and a variety of satellite

applications including INMARSAT. Client needs for reliable, secure and unattended data transport

is supported with a wide array of packages. Dial-upoptions include X, Y, and Z Modem, BLAST

and JFT or other open protocols such as X.25. Network and dial access allows interaction with the

World Wide Web on the Internet and has options encompassing solutions that are tailored forWide Area Network(s) (WAN).

Operational Efficiency

The computer technology of the LEAP-600B system, including its multitasking capability, ensures

improved data acquisition and processing:

Multitasking CPUs allow multiple simultaneous operations, including logging, verification, logging

preparation, and data transmission

Improved job flow through easy-to-understand operator interfaces

Flexible playback and change of presentation parameters at the well site, without disrupting job

flow, through the use of multitasking CPUs

System design utilizing high-reliability components, supplemented with card-level diagnostics and

replacement, and CPU redundancy

Verification/calibration of a surface tool string while the current logging string is tripping in/out of

the well

Simultaneous calibration of multiple instruments in the same string

Wireline Telemetry System improvements allow more instrument combinations and faster

logging speeds

Ability to scroll up and down the log during acquisition

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LEAP-600B Heavy-Duty Truck

The Heavy-Duty Truck is a full-sized

and full-service logging unit. The unit

is designed to operate in virtually

any oilfield-type environment, such

as tropical, desert, or arctic. The

logging cabin is designed to house a

full LEAP-600B acquisition system

while still providing ample working

and seating room. The unit is built

on a 6x4 or 6x6 chassis.

Benefits and Features

Designed for use in variousenvironments .Can be fully winterized for arctic conditions

Set back front axle to optimize weight distribution and meet DOT regulations when fully loaded

Includes three air conditioners that do not use CFC-12 refrigerant Self-contained for remote

operations.

Hydraulic system powered by main truck engine. Both hoist and generator hydraulically powered.

Storage provided on unit to carry necessary logging tools, R/A sources, and supplies.

Sleeper cab provided. Specially designed tool racks using air bags to cushion instruments while

driving. Air ride rear suspension. Heavy-duty frame and suspension.

Full-service capabilit ies

Contains four full-size instrument racks for the acquisition system

Wired to accept either the LEAP-600 or other acquisition systems

Safe to operate

Contains a Wellhead Potential Meter and RF detector for increased perforating safety

Full drum guards to cover moving parts

Drip pan mounted under drum

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Downhole Tools Diagram

TTR

TCT

FJSGRS or SGS

CNS

NEC

HASLDS-MFS

REC

DIS

HRAS

BDS

OTTOM NOSE

BRIDLE

NEC

REC

HRAS

TTR

TCT

GRS or SGS

CNS

LDS-MFS

DLS

BDS

FJS

HAS

TTR:TEMPERATURE TENSION AND RESISTIVITY GRS:GAMMA LOGGING SONDE

SGS:SPSCTRO-GR SONDE NEC:NECLEAR ELECTRIC CARTRIDGE

CNS:COMPENSATED NEUTRON SONDE REC: RESISTIVITY ELECTRIC CARTRIDGE

LDS-MFS:DENSITY&MSFL SONDE DLS:DUAL LATEROLOG SONDE

BDS: BOREHOLE DIRECTIONAL SONDE DIS:DUAL INDUCTION SONDE

HRAS: HIGH RESOLUTION ACOUSTIC SONDE FJS:FLEXIBLE JOINT SUB

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Quad-Combo Express Platform

LEAP-600B Express Platform toolstring provides all the conventional logs which are:

- Resistivity : Dual Laterolog or Dual Induction Log; MSFL

- Porosity: Neutron Porosity and Sonic Porosity

- Formation Lithology and Density

- Hole Deviation and Azimuth

- Hole Caliper, Mud Resistivity and Temperature

- SP

Systematic Specifications of LEAP-600B-Series Tools

Pressure rating 100 or 140MPa

Temperature rating 25 ~ 150(or175 )

Deposit temperature 40 (no longer than 12h.)

Shock rating 50g/100g 11ms 3-axisesVibration rating 5g/7.5g 10 ~ 60 Hz 3-axises

Max. hole size 21.5 in

Logging speed 550m/hr

Max. OD of the string 4.5 in

Total length of the string 21.6m or 24.5m (no Flexible Joint Sub)

Total weight of the string 752Kg (spectro-GR), 740Kg (GR)

Cable-head Voltage 250VAC1050 ~ 60Hz

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Telemetry and Gamma-Ray Tool

(TGR)

The TGR is the combination of the telemetry tool and natural Gamma-Ray measurement. In

conjunction with a telemetry module, a standardized interface between the surface acquisitionsystem and digital down hole tools, digital data is transmitted both upward and downward at 100

kilobits per second in bursts of data called FRAMES. Natural GR sensor has been merged in to

reduce the total tool numbers and length.

Nature Gamma Ray Log

The Natural Gamma Ray Log is the measurement of the total Gamma Ray in the formation. In

conjunction with NEC, the probe can be combined with other LEAP-Series tools for depth

correction.

Appl ications of the GR Logs:

1. Formation profile delineation

2. Clay content determination

3 Well-to-well correlation

4 Depth correlation service

Dimentions and Rattings

Maximum working temperature 150

Maximum working pressure 100MPa

Tool OD Length Weight

88mm(3 3/8in) 1629mm(5ft) 42kg(93Lbs)

Borehole Conditions

Min Hole Max Hole

4.5in 20in

Borehole fluids: Air Fresh Salt Oil

Max Logging Spd: 10m/min

for depth correlation: 20m/min

Tool Position Centralized Decentralized

Measurement

Principle: Gamma Ray

Range 02000API

Vertical Resolution N/A

Depth of investigation 300mm(11.8in)

Measurement Repeatability(At 80API reading, time constant 2S ):

6

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Temperature Tension Resistivity Tool

(TTR)

The TTR is a mechanical and electrical tool that measures the pull on cable head, the mud

resistivity and mud temperature. The logs are used for the enhancement of log analysis andlogging quality/safety control. It is a digital tool.

Main Applications:

1. Gas entries detection in air drilled well

2. Location of lost circulation zones

3. Determination of geothermal gradients

4. Temperature correction of other logs

5. Measuring tool head tension





92mm(3 5/8in) 1993mm(6.5ft) 44kg(97Lbs)

Borehole Conditions

Min Hole Max Hole

4.5in 20in


Max Logging Spd:


Measurement

Principle: Cable head tension, Mud Resistivity and Temperature

Rm Temp Tension

Range 0.015.0ohm-m 0150 -6000lbs+6000lbs

Measurement accuracy

Rm 10 %

Temp (reading*1%+1C)

Tension 68Kg+reading*3%

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Nuclear Electric Cartridge

(NEC)

The main functions of NEC Common Electronic Circuit Sub are the control, signal processing and

communication for GRS, SGS, CNS, LDS and MSS; the control for HAS; the communication tosurface acquisition system in conjunction with TGR.

Dimentions and Ratting


Maximum working pressur 100MPa


86mm(3 3/8in) 2929mm(9.6ft) 48kg(106Lbs)

Borehole ConditionsMin Hole Max Hole

4.5in


Max Logging Spd:


Resistivity Electric Cartridge

(REC)

The main functions of REC Common Electronic Circuit Section are the control and signal

processing for DLS, DIS, BDS and HRAS; and the communication to surface acquisition system

in conjunction with TGR.





86mm(3 3/8in) 1610mm(5.3ft) 27.5kg(61Lbs)

Borehole Conditions

Min Hole Max Hole

4.5in


Max Logging Spd:


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Spectro-Gamma Ray Sonde

(SGS)

The Spectro-GR Sonde, in conjunction withNEC, uses five-window spectroscopy to

resolve total gamma ray spectra into the

three most common components of naturally

occurring radiation---potassium, thorium and

uranium. The tool can be combined with

other LEAP-Series tools or subs through

TCT and NEC.

Main Applications of the Logs:

1. Definition of clay content

2. Detailed well to well correlation

3. Igneous rock recognition

4. Recognition of radioactive minerals

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99mm(3 7/8in) 1442mm(4.7ft) 49kg(108Lbs)

Borehole Conditions

Min Hole Max Hole

4.5in 20in


Max Logging Spd: 6.7m/min


Measurement

Principle: Gamma Ray Spectro

Range 0500API

Vertical Resolution 500mm(19.7in)



U 1.5ppm

TH 1.5ppm

K 0.1%

Stability of high voltage 2v

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Compensated Neutron Sonde

(CNS)

The CNS contains a radioactive source that

bombards the formation with fast neutrons that

are slowed down and then captured primarily

by hydrogen atoms in the formation. The

slowed neutrons been deflected back to the

tool are counted by detectors. Since the tool

responds primarily to the hydrogen content of

the formation, the measurement is scaled in

porosity units. Both epithermal and thermal

neutrons can be measured depending on the

detector design. The tool uses two thermal

detectors for a borehole-compensated thermal

neutron measurement. The tool can be

combined with other LEAP-Series tools or

subs through TCT and NEC.


1. Porosity analysis2. Lithology identification

3. Clay analysis

4. Gas detection

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86mm(3 3/8in) 1794mm(5.88ft) 45kg(101Lbs)

Borehole Conditions

Min Hole Max Hole

6.0in 20in


Recommended Logging Spd: 10m/min


Measurement

Principle: Neutron-Thermal Neutron

Range 185PU




0 ~ 10 PU 1PU

10 ~ 45 PU 10%

> 45 PU 10PU

Measure points

Measurement Measure Point Reference from

Neutron 1040mm(41in) Bottom of Tool

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Hydraulic Pad-mounted Device

(HAS)

The HAS is a hydraulic sidewall contact device that is used for the Combined Probe of

Micro-spherically Focused resistivity and Litho-Density measurements. The hydraulic deviceforces the Combined Logging Probe of Litho-Density Probe and Micro-spherically Focused Probe

to the sidewall during logging. It also provides a caliper for the correction of these pad-type logs.





117.5mm(4.6in) 3151mm(10.3ft) 103.5kg(228Lbs)

Borehole Conditions

Min Hole Max Hole

6in 21in




Operation voltage 127 VAC/0.7 ~ 0.9A/60Hz

Time to open the pad 2 s

Time to close the pad 60s

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Combined Logging Probe of Litho-Density and

Micro-spherically Focused Logging

(LDS/MFS)The LDS, Litho-Density Sonde, makes direct

measurements of formation lithology and

density. Coupled with the Compensated

Neutron Tool (CNS), it offers a good means of

measuring porosity in a variety of environments.

The contrasting response of the LDS and CNS

is used to identify different rock matrices and

differentiate between gas or liquid trapped in

the rock pore spaces.

.

In conjunction with NEC and HAS, the

Litho-density logs and the Micro-spherically

Focused logs can be provided. The

Litho-Density tool uses a sonde-mounted

gamma ray source 1.5CiCs137

and two

detectors to measure the bulk density and the

effective photoelectric effect (Pe) of the

formation. A caliper is also recorded. The tool

uses two detectors to compensate the

measurement result for the effects of mud cake

and hole rugosity. The Micro-sphericallyFocused Logging tool provides shallow

micro-resistivity of small volume near the

borehole in wells drilled with conductive drill

fluid. The tool also provides a caliper

measurement. It is usually run with Dual

Laterolog Probe or Dual Induction Probe

through TGR, NEC and REC.

In conjunction with TGR, NEC and REC,

LDS-MFS measurements can be combined

with other LEAP-series tools or probes.

Main Applications o f the Logs of LDS:

1. Porosity analysis

2. Lithology determination

3. Caliper

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See HAS 874mm(2.9ft) See HAS

Borehole Conditions

Min Hole Max Hole

6.0in 20in




Measurement

Bulk density Pe

Principle: Gamma attenuation

Range 13.0g/cm3 1.014unit

Vertical Resolution 360mm(14in)



Bulk density 0.025g/cm3

Pe (1.4

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MFS-Micro-Spherically Focused Logging

The Micro-spherically Focused Resistivity

Tool provides very shallow resistivitymeasurements MFS (micro-spherically

focused log). The tool provides resistivity

information close to the borehole wall and

is usually run in combination with the Dual

Laterolog Tool to give a complete

formation resistivity profile.

The major goal of resistivity tools is to

measure Rt, the resistivity of the

uninvaded zone. Rt, together with porosity,

can be used to compute the water

saturation of a formation, which ultimately

is used to determine hydrocarbon content.

Rt cannot be obtained with only one

resistivity measurement as the tools are

affected by invaded and transition zones.

An approximation of these two zones is

necessary to correct the deep

measurement to get the resistivity of the

uninvaded zone. Correction is not the only

benefit of a very shallow measurement. An

estimation of Sor (residual hydrocarbon

saturation) can be made (based on the

assumption that the mud filtrate displaces

all the mobile hydrocarbon in the invaded

zone).

The Rxo measurement (resistivity of the

invaded zone) is deduced directly from the

MFS (micro-spherically focused log)

measurement.Principles

Main Appl ications o f the Logs of MFS:

1. Resistivity of flushed zone

2. Location of porous and permeable zones

3. Movable hydrocarbon indication

4. Caliper

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Pad OD Length Weight

142mm(5 3/5in) N/A N/A

Borehole Conditions

Tool Diameter Min Hole Max Hole

6.0in 20in




Measurement

Principle: Focused Micro Resistivity

Range Rxo(ohm-m): 0.2-2000ohm-m

Caliper 150540mm(621in)


Depth of investigation 100mm(4in)


0.5200 ohm-m 5%

2001000 ohm-m 10%

10002000 ohm-m 15%

Caliper 0.25in

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Dual Laterolog Sonde

(DLS)

In conjunction with REC, the Digital Dual

Laterolog provides both deep and mediumresistivity measurements and is generally

combined with the MSFL tool measuring

the shallow micro-resistivity and caliper,

and gamma-ray logging tools. Three

resistivity measurements provide invasion

profile and determine accurate true

formation resistivity in wells drilled with low

resistivity drill fluid against high resistivity

formation. The tool can be combined with

other LEAP-Express tools or Probes using

TCT, REC and NEC subs.

Main Applications o f the Logs: (with

MFS log)

1. True resistivity and flushed zone

resistivity

2. Invasion profile3. Correlation

4. Hydrocarbon detection

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92mm(3 5/8in) 3152mm(10.3ft) 102kg(212Lbs)

Borehole Conditions

Min Hole Max Hole

6.0in 20in




Measurement

Deep laterolog Shallow laterolog

Principle: Focused Resistivity Focused Resistivity

Range(ohm-m): 0.2-40000ohm-m 0.2-40000ohm-m

Vertical Resolution 24in 24in

Depth of investigation 2700mm(106in) 31.5in

Measurement accuracy(in undistrubed formation)

0.21 ohm-m 20%

12000 ohm-m 5%

20005000 ohm-m 10%

500040000 ohm-m 20%

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Dual Induction Logging Sonde

(DIS)

In conjunction with REC, the DISrecords two resistivity curves having

different depths of investigation and a

SP curve. Combined with MSFL log,

the three resistivity logs can be

converted to the resistivity of flushed

zone, the invasion diameter and the

true resistivity (Rt). The tool is well

used in wells drilled with medium and

high resistivity drill fluid, for example,

fresh water, air and oil-based mud.

The tool is usually run simultaneously

with other LEAP-Series tools or probes

in conjunction with REC, NEC and

TCT.

Main Applications of the Logs:1. True formation resistivity and

hydrocarbon detection

2. Invasion profile

3. Depth control and correlation

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Dimentions and Ratting




92mm(3 5/8in) 5844mm(19.2ft) 93kg(205Lbs)

Borehole Conditions

Min Hole Max Hole

6in 20in




Measurement

Deep induction Medium induction SP

Principle: Dual Induction Dual Induction

Range 0.22000ohm-m 0.22000ohm-m -8020mv


Depth of investigation 1700mm(67in) 800mm(31.5in)


Deep induction 7% or 1ohm-m

Medium induction 7% or 1ohm-m

Measurement Repeatability:

0.250ohm-m 3%

0.250ohm-m 5%

At calibration point 1%

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High Resolution Acoustic Sonde

(HRAS)

The HRAS utilizes one acoustic transmitterand four receivers combination to make

measurement of the sound transmission

properties of formations surrounding the

borehole. The tool is designed one

transmitter and four receivers with short

space to measure the interval transit time of

high resolution traveling through the

adjacent formation. The HRAS can be

combined with other LEAP-Series tools or

probes through TCT, REC and NEC.

Main Applications o f the Logs


2. Gas detection

3. Lithology identification

4. Fracture detection

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92mm(3 5/8in) 3521mm(9.83ft) 65kg(143Lbs)

Borehole Conditions

Min Hole Max Hole

4.25in 17.5in




Measurement

Principle: High Resolutuion Acoustic

Range 40~200s/ft (130~650s/m)




40 ~ 70s/ft 2s/ft70 ~ 200s/ft 3

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Borehole Directional Sonde

(BDS)

In conjunction with REC, the BDS provides simultaneously recording of the parameters of

borehole orientation (hole azimuth and deviation).

Main Applications:

1. Directional information

2. Location of permeable zones





86mm(3 3/8in) 1400mm(4.6ft) 22kg(49Lbs)

Borehole Conditions

Min Hole Max Hole

4.5in 20in


Max Logging Spd:


Measurement

DEV AZ Rb

Range 090 0360 0360


DEV 0.2

AZ

Dev.5 2

2Dev.5 5

Dev.2 unstable

Rb(0360) 2

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Digital Hydraulic X-Y Caliper

(XYC)

XYC can provide two independent caliper curves in X and Y directions..

Main Applications:

Volumes of borehole and cement

Flexible Joint Sub (FJS)FJS-IB Flex Joint Sub is used between the centered tool and sidewall contact tool for that both of

the tools can get good logging trajectories in the borehole.

Specifications of the sub





92mm(3 5/8in) 1870mm(6.1ft) 60kg(132Lbs)

Borehole Conditions

Min Hole Max Hole

4.5in


Max Logging Spd: 6.7m/min






117mm(4 5/8in) 2655mm(8.7ft) 91kg(201Lbs)

Borehole Conditions

Min Hole Max Hole

6in 21in




Measurement

Range 621in

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Digital Long Spacing Acoustic

(DLSA)

The development of DLSA was a serious attempt at making use of the information contained in

the sonic waveform beyond the first arrival. With the digital signal processing software that canprovide adequate spacing in time of the slowness of the compression component, shear and

Stoneley components of the sonic waveforms and their corresponding energy level. The digital

DLSA have be developed can be combined with other LEAP-Series tools through DLC.

The long spacing sonic logging records the interval transit time of the first compressive arrival of a

sound wave traveling in formations. The measurement is compensated for cave and sound tilt by

the depth derived method (DDBHC) rather than the standard BHC method. Depth-derived

compensation allows for the use of longer transmitter- receiver spacing than the standard BHC

and all long spacing sonic tools used DDBHC technique. Long spacing sonic is useful for

obtaining more accurate interval transit time in zones.



2. Permeability indication

3. Fracture detection

4. Fracture height prediction

5. Sand strength analysis


Maximum working temperature 150 or 175

Maximum working pressure 100 or 140MPa


92mm(3 5/8in) 9169mm(30ft) 92kg(203Lbs)

Borehole Conditions

Min Hole Max Hole

4.25in 17.5in





Principle: High Resolutuion Acoustic

Range 131855s/m



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Digital High Resolution Dip Log

DHRDThe dip of a formation is represented by two components. The stratigraphical dip is the angle atwhich the sediment was originally deposited, and the structural dip is the result of subsequenttilting or deformation. DHRD provides measurements for computing the both dips to indicatepotential oil and gas reservoirs. The tool has two side-by-side configured electrodes on each padthat provides good likeness curves enabling the computation and analysis of stratigraphical dips.Highly accurate deviation and azimuth are obtained from a tri-axial accelerometer and threemagnetometers. It also provides two caliper measurements 90 degrees apart. The tool can becombined with GR tool through DLC.

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1. Determination of both stratigraphical dips

2. Determination of both structural dips

3. Stratigraphical analysis

4. Fracture identification5. Borehole geometry


Maximum working temperature 150 or 175

Maximum working pressure 100 or 140MPa

Tool OD Length

114mm(4 1/2in) 6796mm(22.3ft)

Borehole ConditionsMin Hole Max Hole

6in 20in


Max Logging Spd:


Measurement

DEV AZ Rb Resistivity Caliper

Range 090 0360 0360 0.2 ~ 2000m 620inDepth of investigation 300 mm(11.8in)

Vertical resolution 102mm(4in)

Measurement repeatbility

DEV 0.2

AZ 2

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Pipe Conveyance Log

(PCL)

High-angle, extended reach, and

horizontal drilling technologieshave created new requirements

for the conveyance of wireline

logging instruments. Even in

straight-hole drilling, difficult hole

conditions such as washouts,

bridges, key seats, dog legs, etc.,

present obstacles to standard

wireline methods.CNLC offers

pipe-conveyed logging

equipments to acquire fast,

reliable wireline data in both

open and cased holes.

Pipe-Conveyed Logging (PCL)

PCL is suitable for well conditions such as washouts, bridges, and high angles. The instruments

are attached to the drill pipe for tripping in and out of the well while the downhole wireline

connection is made by means of a sideentry sub. Repetitive PCL wet connections can be made

for multiple-zone servicing.

Advantages

Tool protection options

Fast rig up/down

Logs in/out of well

All logging combinations available

Mud circulation through the drill pipe

Multiple wet connections without tripping tools

Specifications

1) 7-Conductor Pump Down Head

Max Temp: 400F Max Press: 20,000 psi

Sizes Available (OD)* Minimum Drillpipe ID

2-in. Head 2 in.

2--in. Head** 2 in.

Other sizes available with single conductor latch

2) Connector Sub Assembly

Max Temp: 400F Max Press: 20,000 psi

Assembly Max OD Drillpipe Connection*

3 in. 2 7/8 in.

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4 in. 3 in.

6 in. 4 in.

All threads meet API specifications.

3) Side-Entry Sub

Max Temp: 400F Max Press: 20,000 psiMax OD Drillpipe Connection*

3 in. 2 3/8 in. 8Rd

5 in. 3 in. IF

6 5/8 in. 4 in. Xhole

7 in. 4 in. Xhole

All threads meet API specifications.

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LEAP 600B System 2

Documents

Transcript of LEAP 600B System 2