US 11,814,901 B2
Conductive wellbore fluids and/or filtercakes, wellbore fluids for producing the same, and methods of use thereof
Brandi Katherine Price Hoelscher, Houston, TX (US); Cara Bovet, Houston, TX (US); and Albert Okhrimenko, Houston, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 16/097,821
Filed by M-I L.L.C., Houston, TX (US)
PCT Filed May 3, 2017, PCT No. PCT/US2017/030719
§ 371(c)(1), (2) Date Oct. 30, 2018,
PCT Pub. No. WO2017/192642, PCT Pub. Date Nov. 9, 2017.
Claims priority of provisional application 62/435,475, filed on Dec. 16, 2016.
Claims priority of provisional application 62/435,454, filed on Dec. 16, 2016.
Claims priority of provisional application 62/435,384, filed on Dec. 16, 2016.
Claims priority of provisional application 62/435,404, filed on Dec. 16, 2016.
Claims priority of provisional application 62/435,510, filed on Dec. 16, 2016.
Claims priority of provisional application 62/331,332, filed on May 3, 2016.
Claims priority of provisional application 62/331,317, filed on May 3, 2016.
Claims priority of provisional application 62/331,298, filed on May 3, 2016.
Prior Publication US 2019/0136114 A1, May 9, 2019
Int. Cl. E21B 49/00 (2006.01); E21B 21/00 (2006.01); E21B 7/00 (2006.01); E21B 33/138 (2006.01); E21B 47/12 (2012.01)
CPC E21B 49/00 (2013.01) [E21B 7/00 (2013.01); E21B 21/003 (2013.01); E21B 33/138 (2013.01); E21B 47/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of performing a wellbore operation comprising:
circulating an oil-based wellbore fluid having a conductive material therein within a wellbore, the oil-based wellbore fluid having a conductivity of at most 0.02 S/m when measured at 20 kHz, wherein the conductive material is a carbon black having volatile content, wherein the volatile content is below about 1% by weight of the carbon black; and
forming a filtercake having a conductivity at least two orders of magnitude higher than the oil-based wellbore fluid on at least a portion of a wall of the wellbore; wherein the carbon black has a pore volume of at least about 200 cm3 DBP/100 g carbon black and up to about 500 cm3 DBP/100 g carbon black; wherein the carbon black is present in the wellbore fluid in an amount of 1 to 30 pounds per barrel; wherein the oil-based wellbore fluid has a plastic viscosity of about 15-70 cP and a yield point of less than about 35 1b/100 ft2; wherein a circumscribing sphere encompassing an aggregate of the carbon black has a diameter of up to 3 micrometers;
wherein the oil-based fluid is an invert emulsion comprising an oleaginous and a non-oleaginous fluid; wherein the oleaginous fluid is at least 30 percent by volume of the total oil-based fluid, and wherein the non-oleaginous fluid comprises a 25 wt. % calcium chloride brine solution.