Patent ID: 7399731
Filing Date: 2008-07-15
Classification: C09K,G01V

Abstract:
1. A method of increasing the electrical conductivity of a non-aqueous wellbore fluid with a non-aqueous continuous phase, comprising adding to the wellbore fluid: a compound selected from the group consisting of: (i) one or more organic salts having the formula ((R (ii) one or more organic acids corresponding to said organic salts and being intended to form (R (iii) one or more oligomeric organic salts based on linked ((R (iv) one or more oligomeric organic acids corresponding to the oligomeric organic salts and being intended to form oligomerically linked (R (v) a mixture thereof; and an electrical conductivity-enhancing amount of an organic solubilizing agent selected from the group consisting of: ethylene glycol; neopentyl glycol; a C wherein: X is a negatively charged functional group, R Q is a covalent bond or a polar linkage group which connects a terminal atom of the principal straight chain of the organic group R p is a positive integer which is the number of organic groups R Z is a cation selected from the group consisting of Li m and n are positive integers which ensure that the organic salts are charge neutral; and wherein the concentration of the one or more organic salts in the non-aqueous continuous phase is in the range of 0.001 to 3 M at 20° C.