eiru_invoice_lines_statement/views/views.xml

<?xml version="1.0" encoding="UTF-8"?>

<openerp>
    <data>

        <record id="view_account_invoice_form" model="ir.ui.view">
            <field name="name">account.invoice.form</field>
            <field name="model">account.invoice</field>
            <field name="inherit_id" ref="account.invoice_form"/>
            <field name="arch" type="xml">
                <field name="comment" position="after">
                    <field string='Descripción Completa' name="description_completo"/>
                </field>
            </field>
        </record>
    </data>
</openerp>