초록 ▼

The invention provides well-working fluid compositions containing certain hydrophobic organophilic water wettable fibrous materials to decrease the seepage loss of the fluid to subterranean formations in which the fluid is being used. Also disclosed is a process of reducing the seepage loss of well

The invention provides well-working fluid compositions containing certain hydrophobic organophilic water wettable fibrous materials to decrease the seepage loss of the fluid to subterranean formations in which the fluid is being used. Also disclosed is a process of reducing the seepage loss of well working fluids utilizing such fibrous materials.

대표청구항 ▼

An oil base well-working fluid comprising a major proportion of oil and a minor proportion but sufficient to substantially lower the seepage loss of a hydrophobic, organophilic, water wettable fibrous material comprising cotton which has been treated to be hydrophobic and organophilic, said fibrous

An oil base well-working fluid comprising a major proportion of oil and a minor proportion but sufficient to substantially lower the seepage loss of a hydrophobic, organophilic, water wettable fibrous material comprising cotton which has been treated to be hydrophobic and organophilic, said fibrous material having a particle size such that at least 90% by weight thereof present in a water suspension will pass through a 100 mesh screen. A water base well-working fluid comprising a major proportion of water and a minor proportion but sufficient to substantially lower the seepage loss of a hydrophobic, organophilic, water wettable fibrous material comprising cotton which has been treated to be hydrophobic and organophilic, said fibrous material having a particle size such that at least 90% by weight thereof present in a water suspension will pass through a 100 mesh screen.