Surfactant additives used to retain producibility while drilling
Of the many embodiments provided herein, one embodiment includes a method comprising: providing a drilling fluid comprising: an aqueous fluid; and a surfactant; and drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the surfactant forms a micelle within the well bore; and removing an oil block in the formation.
1. A method comprising:
providing a drilling fluid comprising:
an aqueous fluid; and
a surfactant selected from the group consisting of a block copolymer surfactant, a di-block polymer surfactant, a hydrophobically modified surfactant, a fluoro-surfactant, and any combination thereof; and
drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the surfactant forms a micelle within the well bore; and
removing an oil block in the formation.
2. The method of claim 1 wherein the subterranean formation has a retained producibility greater than about 20%.
3. The method of claim 1 wherein the drilling fluid further comprises a fluid loss control agent, wherein the fluid loss control agent forms a layer disposed on the subterranean formation.
4. The method of claim 1 wherein the surfactant is present in the drilling fluid in an amount of from about 0.01% to about 20% by weight of the drilling fluid.
5. The method of claim 1 wherein the micelle has a worm-like structure or a rodlike structure.
6. A method comprising:
providing a drilling fluid comprising:
an aqueous base fluid;
a surfactant selected from the group consisting of a block copolymer surfactant, a di-block polymer surfactant, a hydrophobically modified surfactant, a fluoro-surfactant, and any combination thereof;
a non-polar fluid; and
drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the surfactant forms a micelle that is capable of removing an oil block and the subterranean formation has a retained producibility greater than about 20%.
7. The method of claim 6 wherein the drilling fluid further comprises a fluid loss control agent, wherein the fluid loss control agent forms a layer disposed on the subterranean formation.
8. The method of claim 6 wherein the surfactant is present in the drilling fluid in an amount of from about 0.01% to about 20% by weight of the drilling fluid.
9. A method comprising:
providing a drilling fluid comprising:
an aqueous base fluid; and
a surfactant selected from the group consisting of a block copolymer surfactant, a di-block polymer surfactant, a hydrophobically modified surfactant, a fluoro-surfactant, and any combination thereof; and
drilling a well bore in a subterranean formation that comprises a pore throat; and
allowing the surfactant to remove an oil block, a water block, or both from the pore throat.
10. The method of claim 9 wherein the subterranean formation has a retained producibility greater than about 20%.
11. The method of claim 9 wherein the drilling fluid further comprises a fluid loss control agent, wherein the fluid loss control agent forms a layer disposed on the subterranean formation.
12. The method of claim 9 wherein the surfactant is present in the drilling fluid in an amount of from about 0.01% to about 20% by weight of the drilling fluid.