Corpro Coring Presentation (3)

Transcript of Corpro Coring Presentation (3)

• Our exclusive focus: The CORE;

• Oilfield Service Company incorporated in 1988 in Aberdeen;

• Independent;

• Innovative, Creative & Service Oriented;

• Operating in more than 45 countries including the most remote areas;

• Nowadays cutting more than 50,000 ft / year worldwide.

“ FORMATION EVALUATION THROUGH THE CORE ”

General CommentsGeneral Comments

BRAZIL

INDIA

TUNISIA

RUSSIA

NORWAYU.K.

EGYPTLIBYA

ITALY

SAUDIARABIA

SUDAN

NIGERIA

ANGOLA

INDONESIA

AUSTRALIA

QATARU.A.E.

COLOMBIAVENEZUELA MALAYSIA

THAILAND

NEW ZEALAND

PHILIPPINES

SYRIAIRAN

IVORY COAST

USKAZAKHSTAN

PAKISTAN

VIETNAM

CHINA

AZERBAIJANTURKMENISTAN

MEXICO

ALGERIA

ARGENTINA

MOZAMBIQUE

UGANDA

Corpro – A global networkCorpro – A global network

Types of Damage due to Coring and Core Handling

•Fractures during drilling-inner barrel rotation

•Loss of core prior to entering core barrel

•Dilation / gas expansion during tripping out

•Loss of core during tripping out

•Mechanical damage during the pipe tripping process

•Mechanical damage during recovery at surface (rotation, shock and flexure)

FlexureFlexureDamageDamage

IntroductionIntroduction

PlanningPlanningCore Acquisition Program :

•Prepared based on meetings and all data made available,•All the aspects of the coring operations are covered with:

·Responsibilities,·Safety issues,·Mud design,·Procedures,·Coring Equipment,·Tripping Out Program,·Core Processing & Transportation,

•Require participation of all the teams (drilling, geology, reservoir,…)•Final details are discussed through 2 way email communications.

Tripping Out Program :·Designed based on local PVT data (Bubble point, Bo, Rs, reservoir pressure and temperature, range of permeability, etc…),·Reduce risks of core damage due to gas expansion

PlanningPlanning

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0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

Depth (ft)

Trip

Out

Spe

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in/S

tand

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Example:·From TD to 5000ft 2min/stand·From 5000 to 900ft 4min/stand·From 900ft to surface 8min/stand

Down Hole EquipmentDown Hole EquipmentBHA :

Down Hole EquipmentDown Hole Equipment

Core Barrel: 7” x 4”

Top Connection: 4 1/2” IF

Core Barrel Length: 6m

Core Barrel - Main ComponentsCore Barrel - Main Components

Outer Barrel Head

Stabiliser

Outer Barrel

Core Bit

Inner Barrel Head

TSS Inner Barrel

Lower Shoe

Core BarrelCore Barrel Down-hole OpDown-hole Op Core ProcessingCore Processing

Core BarrelCore Barrel

Corpro Core Barrel

Thin Sleeve System

Half Moon

Shoe

Outer Head

Corehead

Outer Assembly:•20-foot modular system•Automatic spacing

Inner Assembly:•2 component inner tube system

Half Moon Liner:•Pre split aluminium inner tube

Down Hole EquipmentDown Hole EquipmentCore Barrel :

Inner TubeInner TubeRecovery ProcedureRecovery Procedure

Core HandlingCore Handling

Core Bit TechnologyCore Bit Technology

Leading to:

• Increase Bit Life

• Improve Core Recovery

• Improve Core Quality

Spiral BladesTo ensure the best stabilisation of

the corehead

Radial BearingTo prevent any lateral movement

of the inner barrel Thrust BearingTo provide an efficient rotational independence between the inner

and outer barrel

Controlled Spacing

To guarantee a minimal flow in the throat

Core Bit TechnologyCore Bit TechnologyLowInvasion

Flow PortsEnsure 95% of the fluid to flow through the port and not to wash

or invade the core

Deflection AngleDirect the flow towards the OD of the hole, away from the core Throat Ports

Reduce the speed of the flow that will be

seen by the coreInner Gauge

As short as possible to minimise any further

damage to the core one it has been cut

Coreheads :MCP 6628 ½” x 4”

MCP 6828 ½” x 4”

MCP 5818 ½” x 4”

MCP 4728 ½” x 4”

Lower Shoe – Core catcher

Core Catcher

Lower Shoe

Upper Shoe

Coreheads 8 ½” x 4”Coreheads 8 ½” x 4”

MCT543MCP580

Core QualityCore Quality

Processing AreaProcessing Area

Core ProcessingCore Processing

Laydown Cradle

Shear Boot Clamp

Inner Tube Clamp

TSS – Pump Out ProcedureTSS – Pump Out Procedure

1.1. Remove Shear BootRemove Shear Boot

1.1. Remove Shear BootRemove Shear Boot

1.1. Remove Shear BootRemove Shear Boot2.2. Open ValveOpen Valve

1.1. Remove Shear BootRemove Shear Boot2.2. Open ValveOpen Valve

1.1. Remove Shear BootRemove Shear Boot2.2. Open ValveOpen Valve3.3. PumpPump

1.1. Remove Shear BootRemove Shear Boot2.2. Open ValveOpen Valve3.3. PumpPump4.4. Close ValveClose Valve

1.1. Remove Shear BootRemove Shear Boot2.2. Open ValveOpen Valve3.3. PumpPump4.4. Close ValveClose Valve5.5. Push Liner away from pistonPush Liner away from piston

Core HandlingCore HandlingCore Measuring & Marking-up :

Cie – well XXX

Core#1 - Box#1 - X of YTopDep

th

Bot

tom

Dep

th

·Measuring from the top,·Marking-up every one metre (or 3 feet) and labelling.

Core Cutting :·Half Moon Tube extraction from the steel tube TSS,·Core cutting (Air driven Saw)

Core Container :·Offer to the Core a safe, robust, protective and transportable environment,·Ensure that Core Quality is maintained through handling & transportation and brought to the Core Analysis Laboratory.

Core TransportationCore Transportation