当前位置:首页 >> 电力/水利 >>

SONDEX爬行器讲座


Sondex Horizontal - Tractor

What is a tractor?

Sondex Motorised Univeral Logging Engine (MULE) Downhole tool Schematic
Swivel Head CCL Tension Roller Centraliser

Electronics

Actuator

Drive Motor

Master Tractor

Slave Tractor

Roller Centraliser

Total Length – 24.5ft

Tractor Elements

Mono Pin connection Transport (Downhole Tool): ?2 Cases 10”x 7”x72” - 40kg, 88lb each ?1 Case 10”x7”x48” - 25kg, 55lb Logging Tool For ‘Passenger’

TRACTOR VIDEO

Current Status
Over 30 Tools manufactured for sale and rental Over 250 runs 96% success rate Used for:
– – – – – – Production Logging Cement Bond logging Casing inspection Perforating Plug setting Tubing punches

Major clients include Schlumberger, Baker Atlas, Maritime Well Services

Applications
Production Logging Casing inspection Cement bond logging Other logging services Perforating Plug setting Pipe recovery Other wireline and CT services

Downhole Tractor Why?
?Large number of horizontal / extended reach wells ?Slickline and Wireline cannot be used over 70-80° ?Coiled tubing is only method of intervention for some wells ?Some wells beyond reach of coiled tubing

Sondex Tractor Advantages
Time, Logistics and Data Quality
?Less operating time than CT or Drillpipe ?Tractor has to work from hold up depth only ?30 ft/min max speed ?Simplified Logistics ?Easier mobilisation ?Easier handling ?Fewer personnel ?Space efficient ?Improved Production Log Quality ?Better depth control ?Less well bore interference ?Smoother sensor movement

Norwegian market data
100%

80%

60%

Tractor CT Subbing

40%

20%

0% 1998 2000 2002 2004 2006 2008

Norwegian Market data showing expansion or tractor marker relative to Coiled Tubing and Snubbing

Reduced Operating Time compared to Coiled Tubing
Rig up
– E-Line – Coil – Pipe Conveyed

Running in Hole (can travel quickly to hold up depth) Pulling out of hole (can travel quickly) Rig down

Sondex Tractor advantages
Tractor performance Drives in both directions Use of lighter mono-cables reduces cable drag load and extends useful range 2000m horizontal run has been achieved with 33% max. load Non-stop operation from free fall depth to target depth. Cool down stops not required No slippage. Side forces self-adjusting to maintain traction through entire load range

Sondex Tractor advantages
Simplified Job Logistics ?No special cable requirements ?No special collector requirements ?No special power requirements ?Standard pressure control equipment Improved Job efficiency ?Integrated rollers for maximum free fall descent ?Real time feedback from downhole sensors while running tractor ?Tractor Load and Head Tension ?CCL ?Tractor Speed and Tractor Distance ?Tool status ?Integrated Simulation ? Tractor data is integrated with cable tension, depth and speed on a single display for improved job control

Sondex Tractor advantages
Sondex Technology: ?Slim OD & Wide operating range – better access, better data ?High efficiency – high load capability on standard cables ?Compatibility – Proven to work seamlessly with all equipment tested ?Control & Feedback – safer, more reliable operation

Sondex Tractor advantages
Through tubing capability ?2-1/8 OD allows entry through most completion restrictions ?Can drive in pipe sizes from 3-1/2 tubing up to 9-5/8 casing ?Twin tractor system allows access through completion features where ID changes eg crossovers, liner hangers etc Third Party Compatibility ?Approved by major wireline service companies for ? CH logging ? Perforating ? Plug setting services

Tractor vs Coiled Tubing
Standard wireline operating procedures apply Fewer personnel Reduced time and cost Less interference with well flow for PL quality Better depth control Easier transportation, easier lift, less space

Tractor vs Coiled Tubing
No pumping capability Mechanical force limited ...

MULE Features
2 1/8” diameter for through tubing intervention Drives in casing sizes from 2 7/8” up to 9 5/8” Highly efficient motor and drive system Low cable current : 7/32” mono conductor cable used Side forces self-adjusting to maintain traction through entire load range Fail safe retraction

MULE Features (continued)

Microprocessor controlled Simultaneous data transmission while tractoring Bi-directional Compact surface control equipment Compatible with standard logging equipment

Tractor Specifications
? ? ? ? ? ? ? ?

Continuous pull 600lb Continuous speed 9 m /min (30 ft/min) Weight 200 lbs Length 24.5ft (Including 2 drive sections) Temperature rating 150 deg C Pressure rating 15,000 psi No hydraulic oil required Bi-directional drive

Sondex MULE Features
System Schematic

3rd Party Surface System

Tractor Control PC

Surface Control Panel

Line

? Compact - 19” Rack Unit, 5” high ? Runs off standard power supply - 110 v or 240v ? Simple to use ? Output 0-1000V, 0 - 1.5A. ? Various safety features ?Total Weight (inc transport case): 26Kg - 57lb

Key Issues For effective operation
Efficiency: ?Power limited by cable specifications ?Larger Cables generate higher drag loads

Safety: ?Arms Powered shut ?Safety spring shuts arms on power fail ?Shear pins allow pull on wireline to close tool

Key Issues For effective operation
Flexibility: ?Double drive unit to cope with difficult wells ?Wide rang of tubings / casings covered with one tool size ?Wheel design not sensitive to sand and other debris Reliability: ?Quality controlled manufacture & Test ?25 years of experience designing logging tools ?Track Record

Transport - Complete Kit
Downhole Tool: ?2 Cases, 10”x 7”x72” - 40kg, 88lb each ?1 Case, 10”x7”x48” - 25kg, 55lb

Surface Panel: ?1 Case, 24”x10”x24” - 26Kg, 57lb

Special Tool Kit: ?1 Case, 24”x8”x12” - 15Kg, 33lb

+ PC

TOTAL Shipping Weight - 312lb, 145Kg

Loads on Tractor

TRACTOR RELAYS HEAD TENSION AND LOAD TO SURFACE DURING TRACTORING

MULE Roller Centraliser
Designed to minimise toolstring rolling resistance: ? 4 Arms - high centering force ? Large rollers - lower rolling resistance ? Two rollers per arm - smoothes features

Tractor Simulation before the job
Cable size /weight selection Comparison of different well profiles Sensitivity to tool weight Sensitivity to tool and cable friction

+ WEST

Information required for planning
Open hole logs – image or caliper Maximum diameter in horizontal section Directional survey data for simulation Available rig up height / Pressure control equipment. Full completion details

Tractor Intervention Simulation Results

Tractor load vs depth Cable surface pull vs depth Cable safety factor Hold up depth Intervention limit Weak-point limit

Why use WEST?
Question: “If tools became stuck at the end of a complex deviated well, could the downhole weak-point deliberately be broken and the wireline be retrieved, without exceeding the maximum safe pull of the wireline?"
-

Answer: “Ask WEST. WEST processes the critical parameters including the downhole weakpoint and the wireline breaking strength in order to predict operational limits.”

Why use WEST?
WEST predicts whether a tractor is required WEST predicts whether a job is possible WEST predicts the wireline and tractor forces WEST predicts whether a job is safe to attempt

Planning Software

Wireline forces Simulation

Realtime Data from Tractor

Comparison with real data

Logistics
Tractor ready for shipping 2 downhole tools 2 surface power supplies Spares & Accessories Runs off 110 /240v single phase power.

Case History
Client: Mobil Service: Schlumberger PLT Tool String:MULE, Schlum CPLT, RST, Dual Flow View Max Deviation: Horizontal Total distance tractored: 3149m Results: “Excellent PL data”

Case History: Sondex Tractor Recent Run Record 15 tractor runs in 7 days on three wells
4 GR-CCL runs 1 Plug in 5in liner 1 plug in 2-7/8 liner 9 Perforating guns

Total footage 10,000 ft Max deviation 90 deg Completions 3-? tubing into 4-?in and 5in liner Offshore mast operation

The final tractor position was in the reservoir below this platform

Barefoot completions Sondex Tractor
Feedback reduces risk Control of force against formation Proven to work in wells with debris Can tractor in wide range of diameters Special adaptation – 3rd Drive section Worldwide experience & Reputation for reliability Dedicated design team

Tool running well in gravel & damaged pipe

Barefoot completions Risk minimisation

Planning Candidate well selection Simulations Well preparation Equipment preparation

Well Preparation
Why Clean?

Tractor can pass through debris

Excess debris can build up & block wellbore

Equipment Preparation Correct size of drive arms Passenger toolstring – suitable for OH & Horizontal. Extra drive section to help with fractured zones Twin tractors as back-up

Conclusion

Sondex Tractor is good choice for consolidated cased hole completions. Tool can tractor in wide range of hole sizes. Detailed planning is essential. Unknown factors (debris in well) pose greatest risk. Feedback available from tool reduces risk.

End of Presentation Visit our Website: www.sondex.com


相关文章:
井下牵引器研究进展
主要研制公司有 Welltec、 Sondex、 PowerTractor 等。 (2)伸缩式爬行牵引器。 此类牵引器通过两组可张开和收合的扶正器式抓靠臂交替撑 到管壁上,一组抓靠臂...
更多相关标签:
sondex板式换热器 | sondex | sondex官网 | 丹麦sondex板式换热器 | sondex测井仪官网 | sondex 中国 | sondex测井仪 | sondex公司 |