Download - Basic drilling for we adp 2014 k edit3
ODL – Domestic Drilling Department
Basic Drilling for WE ADP 201416 June 2014
DRILLING DEPARTMENT
ODL – Domestic Drilling Department
AGENDA
• Reason to drill a well
• Type of Oil and Gas Wells
• Geological Targets and Directional Well
• PTTEP Thailand Well Architecture
• Drilling Team/Rig Organization
• Drilling Equipments in Well Construction
• Well Cost
• Risk in DRILLING
• Working on the Rig
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ODL – Domestic Drilling Department
Reason for drilling a well
Why we drill a well?
• Gain information about the sub-surface
• Allow communication between surface and under ground to:
– Produce pore fluids: Hydrocarbon (oil and gas), Water
– Injection of fluids
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ODL – Domestic Drilling Department
DRILLING a WELL
Drilling a well to be planned following subsurface formation and structure that potentially provide trapping of hydrocarbon
WATER
OIL
GAS
ODL – Domestic Drilling Department
Wildcat / Exploration Well:
• A well drills in the area with little known geological
information.
Appraisal / Delineation Well:
• A well drills to investigate the extent of the reservoirs and
to evaluate potential.
Production / Development Well:
• A well drills to produce hydrocarbon.
In-filled Well:
• A well drills to optimize hydrocarbon recovery.
Types of Oil and Gas Wells
ODL – Domestic Drilling Department
• Geological Targets
Geological Target and Directional Well
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Geological Target and Directional Well
Vertical J shape S shape Horizontal
Well Type by Shape
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ODL – Domestic Drilling Department
1. Drilling surface section
2. Run surface casing
3. Cementing
4. Drilling intermediate section
5. Run intermediate casing
6. Cementing
7. Drilling production section
8. Electric logging
9. Run production casing
10.Cementing
11. Perforating8
DRILLING a WELL on GOT
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PTTEP Offshore Thailand well Architecture
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PTTEP S1 well Architecture
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Yom/PTO well LKU well
Yom
PTO
Main Seal
LKU
Ping
9-5/8” casing12-1/4” hole
900m
1700m
2000m
AHD
1200m
3000m 7” casing8-3/4” hole
9-5/8” casing12-1/4” hole
7” casing8-3/4” hole
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DRILLING TEAM / RIG– organization
ODL Drilling VP
Operation Manager
Engineering Manager
Drilling Engineer
Superintendent
DSV
Rig Site
Rig Contractor
PTTEP Support Team
Service Companies
OFFICE TEAM
Asset Team
Reservoir Eng.
PlanningGeologist & Geophysicist
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DRILLING TEAM / RIG– organization
Senior DSV
Rig Contractor
DSV
Well Site Geologist
Third Party(Service Companies)
Derrickman
Rousabout
Barge Master for offshore
RIG site team
PTTEP Support
Material Man
Completion Supervisor
Toolpusher
MWD/LWD
Wireline Logging
Directional Driller
Mud Engineer
Wellhead Engineer
H2S Services
Tubular Running
Mud Logging
Waste Management
Cementer
CateringPumpman
Driller
Roughneck
MechanicsElectricians
Welder
ODL – Domestic Drilling Department
Services companies involve during drilling phase - general
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ODL – Domestic Drilling Department
DRILLING EQUIPMENT IN WELL CONSTRUCTION
•Rig system• Rig Type• Rig Components
• Casing and Wellhead Mud • Cement• Downhole Drilling Tools• Formation Evaluation• Well Completion
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ODL – Domestic Drilling Department
TYPE OF RIG IN PTTEP OPERATION IN THAILAND
• Land rig – sling shot
• Offshore• Jack up rig
• Tender assisted rig
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Rig Type
Onshore Rig
• GW-80 and GWT-11
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Rig Type
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• Jack Up Rig
Exploration Well
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Rig Type
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• Tender Rig
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RIG COMPONENT
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• Hoisting System
RIG COMPONENT – hoisting system
ODL – Domestic Drilling Department
RIG COMPONENT – hoisting system
Hoisting System
• To provide a means of lowering or raising drilling strings, casing strings, and other subsurface equipment into or out of the hole. The principal components consist of– Derrick and Substructure
– Drilling Line
– Blocks
– Drawworks
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ODL – Domestic Drilling Department
RIG COMPONENT – hoisting system
Derrick and Substructure
Block
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Drawworks
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• Circulating System
RIG COMPONENT – circulating system
ODL – Domestic Drilling Department
RIG COMPONENT – circulating system
Circulating System
• The principal components of the rig circulating system include– Drilling fluid (mud)
– Mud pumps
– Mud pits
– Mud-mixing equipment
– Solid control equipment
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ODL – Domestic Drilling Department
RIG COMPONENT – circulating system
Mud-Mixing Equipment
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Shale Shaker
Mud Pumps Mud Pits
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• Rotating System
• Kelly• The rotating system
includes all of the
equipment used to achieve
bit rotation.
– Kelly (old fashion)
– Top drive
RIG COMPONENT – rotating system
ODL – Domestic Drilling Department
RIG COMPONENT – rotating system
Top Drive
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• Power System
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RIG COMPONENT – power system
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RIG COMPONENT – power system
ODL – Domestic Drilling Department
RIG COMPONENT – well control system
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ODL – Domestic Drilling Department
RIG COMPONENT – well control system
Well Control System
• To prevent uncontrolled flow of formation fluid from wellbore.
• Kick is defined as an unwanted influx of formation fluids into the wellbore.
• Blowout is defined as an uncontrolled flow of formation fluids to the surface or to another formation underground (underground blowout)
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ODL – Domestic Drilling Department
RIG COMPONENT – well control system
BOP stack
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Accumulator and
BOP control ’s Diagram
ODL – Domestic Drilling Department
Casing
Casing
• Conductor Pipe
• Surface Casing
• Intermediate Casing
• Production Casing
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ODL – Domestic Drilling Department
Well head & X’mas tree
Onshore Well Head Offshore Well Head
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ODL – Domestic Drilling Department
Wellhead & X’mas tree
Onshore X’mas tree Offshore X’mas tree
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ODL – Domestic Drilling Department
Function of Drilling Fluid Type of Drilling Fluid
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• Clean rock fragments and carry them
to surface.
• Exert sufficient hydrostatic pressure
against subsurface formation to
prevent formation fluid from flowing
into well (kick) without fracturing
formations.
• Keep the newly drilled borehole open
until steel casing can be cemented.
• Cool and lubricate the rotating string
and bit.
Mud
ODL – Domestic Drilling Department
Cement
Cementing Equipment
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ODL – Domestic Drilling Department
Cement
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ODL – Domestic Drilling Department
Downhole Drilling Tools - Bit
Drill Bit
Milled Tooth
Tungsten Carbide Insert
Diamond
PDC
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Downhole Drilling Tools - BHA
Mud Motor
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ODL – Domestic Drilling Department
• Data Acquisition
• Mud Logging
– Record drilling parameters
– Collect and Analyze cuttings
• Wireline Logging
• LWD (Logging While Drilling)
Formation Evaluation
ODL – Domestic Drilling Department
• Well Testing
• Identify Production Capacity
• Drill Stem Test (DST)
• Production Test
Formation Evaluation
186-0-78404-8186-0-78404-8186-0-78404-8
ODL – Domestic Drilling Department
Well Completion
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• Three basic types of completion
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Well Completion
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ODL – Domestic Drilling Department
Drilling Related Services :
• Drilling Rig Services
• Cementing Services
• Electric logging Services
• Mud logging Services
• Drilling Fluid Services
• Directional Drilling Services
• Tubular Running Services
• Rig Positioning Services
• Fishing Services
• H2S and Safety Preventive Services
• Drilling Project Management Services
WELL COST COMPONENTS
Support and Logistic Services :
• Weather Forecast Services
• Telecom Services
• Vessel or Transportation Services
• Helicopter or Fixed Wing Services
• Workshop and Repair Services
• Inspection Services
Long-Lead Items (Tangibles):
• Tubular (Casing and Tubing)
• Wellhead and X-mas Tree
• Casing and Cementing Equipment
• Completions and DownholeEquipment
• Bit
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Gulf of Thailand(1.5 – 6 M USD)
Onshore Thailand(0.8 – 25 M USD)
Myanmar Offshore & Andaman
(3– 40 M USD)
Deepwater Indonesia
(50– 70 M USD)
Australia Offshore(15 – 50 M USD)
Oman Onshore(6 – 8 M USD)
Iran Onshore(40 - 50 M USD)
Algeria Onshore(12 – 18 M USD)
WELL COST
ODL – Domestic Drilling Department
Work on the Rig
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RISK in DRILLING OPERATIONS
Problems related Working and Environmental Conditions:
• Heavy Machinery, Tools and Equipment
• High pressure / High Temperature
• Chemical and hazardous material i.e. H2S, CO2, toxic, radioactive
• Transportation i.e. Heavy truck, Vessels, Helicopter
• Weather i.e. Typhoon, Cyclone, Sand Storm
• Security
Problems related Hole Conditions:
• Stuck Pipe
• Loss Circulation
• Well Control Situation
• Blowout
ODL – Domestic Drilling Department
Work on the Rig
ODL – Domestic Drilling Department
Work on the Rig
ODL – Domestic Drilling Department
Work on the Rig
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THANK YOU