Process for rolling aluminum foils includes: providing first and second laminates each having two aluminum foils overlapped one to another between which a lubricant is interposed; lubricating one face of one laminate between the first and second laminate; coupling the first laminate with the second laminate obtaining a double laminate. The lubricated face is a contact face between the first and second laminate; or it is a non-contact face between the first and second laminate, in this case being provided the intermediate steps of winding the double laminate obtaining a wound double laminate having n coils; partially separating the wound double laminate by unwinding, by one coil, both the aluminum foils of one of the first and second laminate, obtaining an at least partially wound double laminate having an end portion constituted by a respective portion of both the aluminum foils of only one of the first and second laminate.

Process for rolling aluminum foils includes: providing first and second laminates each having two aluminum foils overlapped one to another between which a lubricant is interposed; lubricating one face of one laminate between the first and second laminate; coupling the first laminate with the second laminate obtaining a double laminate. The lubricated face is a contact face between the first and second laminate; or it is a non-contact face between the first and second laminate, in this case being provided the intermediate steps of winding the double laminate obtaining a wound double laminate having n coils; partially separating the wound double laminate by unwinding, by one coil, both the aluminum foils of one of the first and second laminate, obtaining an at least partially wound double laminate having an end portion constituted by a respective portion of both the aluminum foils of only one of the first and second laminate.

In an aluminum foil rolling process, first and second aluminum foils are provided, each having first and second faces, one face between the first and second faces is lubricated to obtain a first lubricated face. The foils are coupled to obtain a coupled foil having two outer faces and rolling the coupled foil, reducing the thickness of the coupled foil. One face between the two outer faces of the coupled foil is lubricated to obtain a coupled foil having a second lubricated face. The coupled foil is then wound to obtain a wound coupled foil. The coupled foil is partially separated by unwinding one of the first and second foils, to obtain a wound coupled foil. The wound coupled foil is unwound and rolled to obtain a coupled foil with reduced thickness and is then separated to obtain first and second foils with respective first and second reduced thicknesses.

In an aluminum foil rolling process, first and second aluminum foils are provided, each having first and second faces, one face between the first and second faces is lubricated to obtain a first lubricated face. The foils are coupled to obtain a coupled foil having two outer faces and rolling the coupled foil, reducing the thickness of the coupled foil. One face between the two outer faces of the coupled foil is lubricated to obtain a coupled foil having a second lubricated face. The coupled foil is then wound to obtain a wound coupled foil. The coupled foil is partially separated by unwinding one of the first and second foils, to obtain a wound coupled foil. The wound coupled foil is unwound and rolled to obtain a coupled foil with reduced thickness and is then separated to obtain first and second foils with respective first and second reduced thicknesses.

A method of controlling a downhole operation includes: deploying a work string into a wellbore, the work string comprising a deployment string and a bottomhole assembly (BHA); digitally marking a depth of the BHA; and using the digital mark to perform the downhole operation.

Process for rolling aluminium foils, comprising the steps of: a)-b) providing a first and a second laminate (1, 2) each comprising two aluminium foils overlapped one to another between which a lubricant is interposed; c) lubricating one face of one laminate between the first and second laminate; d) coupling the first laminate with the second laminate obtaining a double laminate, wherein d) the lubricated face is a contact face between the first and second laminate; or wherein d) the lubricated face is a non-contact face between the first and second laminate, in this case being provided the intermediate steps of d) winding the double laminate obtaining a wound double laminate (13) comprising n coils; ) partially separating the wound double laminate (13) by unwinding, by one coil, both the aluminium foils of one of the first and second laminate, obtaining an at least partially wound double laminate (18) comprising an end portion (19) constituted by a respective portion of both the aluminium foils of only one of the first and second laminate; d) unwinding the at least partially wound double laminate (18) obtaining a double laminate; e) rolling the double laminate; f) separating the double laminate obtaining two aluminium foils (4, 5) each have both faces opaque, and two aluminium foils (6, 7) each have an opaque face and a bright face.

Process for rolling aluminium foils, comprising the steps of: a)-b) providing a first and a second laminate (1, 2) each comprising two aluminium foils overlapped one to another between which a lubricant is interposed; c) lubricating one face of one laminate between the first and second laminate; d) coupling the first laminate with the second laminate obtaining a double laminate, wherein d) the lubricated face is a contact face between the first and second laminate; or wherein d) the lubricated face is a non-contact face between the first and second laminate, in this case being provided the intermediate steps of d) winding the double laminate obtaining a wound double laminate (13) comprising n coils; ) partially separating the wound double laminate (13) by unwinding, by one coil, both the aluminium foils of one of the first and second laminate, obtaining an at least partially wound double laminate (18) comprising an end portion (19) constituted by a respective portion of both the aluminium foils of only one of the first and second laminate; d) unwinding the at least partially wound double laminate (18) obtaining a double laminate; e) rolling the double laminate; f) separating the double laminate obtaining two aluminium foils (4, 5) each have both faces opaque, and two aluminium foils (6, 7) each have an opaque face and a bright face.

An aluminum foil rolling process includes: providing first and second aluminum foils, each having first and second faces; lubricating one face between the first and second faces to obtain a first lubricated face; coupling the first and second foils, thereby obtaining a coupled foil having two outer faces; rolling the coupled foil, reducing the thickness of the coupled foil; lubricating one face between the two outer faces of the coupled foil, obtaining a coupled foil having a second lubricated face; winding the coupled foil having the second lubricated face, obtaining a wound coupled foil; partially separating the coupled foil by unwinding one of the first and second foils, obtaining a wound coupled foil; unwinding the wound coupled foil; rolling the coupled foil thereby obtaining a coupled foil with reduced thickness; separating the coupled foil with reduced thickness obtaining a first and second foils with respective first and second reduced thicknesses.

An aluminum foil rolling process includes: providing first and second aluminum foils, each having first and second faces; lubricating one face between the first and second faces to obtain a first lubricated face; coupling the first and second foils, thereby obtaining a coupled foil having two outer faces; rolling the coupled foil, reducing the thickness of the coupled foil; lubricating one face between the two outer faces of the coupled foil, obtaining a coupled foil having a second lubricated face; winding the coupled foil having the second lubricated face, obtaining a wound coupled foil; partially separating the coupled foil by unwinding one of the first and second foils, obtaining a wound coupled foil; unwinding the wound coupled foil; rolling the coupled foil thereby obtaining a coupled foil with reduced thickness; separating the coupled foil with reduced thickness obtaining a first and second foils with respective first and second reduced thicknesses.