HYDRAULIC LATERAL DRILLING

hydraulic lateral drilling* New technique of lateral drilling
* High Pressure Fluid

* Piercing perpendicular to shaft
* With flexible pipe (coil tubing)

Objectives

* Increase the rate of marginal well production:
* Reduced formation damage
* Elimination of permeability barriers
* Improvement of the effective radius of drainage

Features

* Diameter: 2 inches
* Length: 300 feet
* Bending radius: 30 cms

How It’s Done

* Two stages:

Drilling casing with a 11/16 inch drill.
The actual drilling of the formation hydraulic ejector with a 5 / 8 inches.

* Oriented on training and directed perpendicular to the pit through a deflector shoe

Conventional vs lateral hydraulic drilling

Lateral Drilling

Design criteria and constraints

* You can build up to 10 lateral level

* Casing:

Rating: N – 80
Diameter: 7 inches
Weight: 29.0 lbs / ft

* Depth less than 3 100 meters

Requirements

* CBL-VDL electrical Profiles
* Petrophysical data (porosity, permeability, water saturation), Thickness of Training, Production Data
* Contact Water – Oil & Gas – Oil
* State mechanical casing

Technical Specifications

* Strawberry

Drill diameter: 11/16 inches
Material: Tungsten Carbide

* Motor background

Diameter: 1 7 / 8 inches
Weight: 14 Kg
Flow: 3-8 gallons per minute
RPM: 110-290
Maximum Torque: 70 Nm
Maximum power: 1.7 kW
Maximum weight on bit (WOB): 6000 lbs

* Flexible tubing

External diameter: 0.5 inches
Inner Diameter: 0.42 inches
Length: 7500 feet, 12,000 feet, 13,000 feet
Steel Grade: 2205

* Kevlar Hose

Outer Diameter: 0.25 inches
Length: 330 feet

* Jet drilling head

Diameter: 5 / 8 inches
Design: 3 holes 3 holes forward and backward
Dissipates 40% of the energy back, 60% forward

* Parameters drill casing

Flow: 5 to 5.5 gallons per minute
Pressure: 6000-7000 PSI
Time: 1.5 hours

* Parameters of penetration of the jet formation

Flow: 1.5 to 3 gallons per minute
Pressure: 3000-5000 PSI
Speed: 15 minutes by 330 feet

Install the deflector shoe and pipe work

Installing the engine and traction unit

Installing Kevlar hose

Development of hydraulic drilling

Depth drilled

Completion of drilling

Starting another hole at the same level

The 2nd hole

The 2nd hole on the side

Well IPR IPR vs lateral vertical depending on its length

World application

Conclusions

* This new technology allows to increase the production rate and thus recoverable reserves from marginal wells.
* Applicable in small reservoirs thicknesses.
* Has a greater effectiveness in older wells and low productivity.
* Not required large and expensive well service equipment.
* No additional equipment is required for the drilling of the casing.
* No need for extra stimulation.
* The operation has an average duration of two days per well.
* Not required for making specialized registries.
* No need to change the mechanical configuration of the well.

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