Methods and compositions for using temporary, slow degrading, particulate agents in a subterranean formation
Methods, fluids, and compositions are provided for treating subterranean formations. The fluids can be servicing or drilling fluids including a base fluid and a particulate agent or biocide precursor particulate agent. The particulate agent can seal flow paths in the subterranean formation and subsequently can be degraded to allow flow to resume. The particulate agent may be a reaction product of a urea containing compound and an aldehyde containing compound. An example of such a reaction product is a methylene urea.
1. A servicing fluid comprising:
a base fluid and a solid particulate agent,
wherein the base fluid is selected from the group consisting of water, an aqueous fluid comprising salt, an oil, an ester, a non-aqueous solvent, a gas, and any combination thereof, and
wherein the solid particulate agent is selected from the group consisting of monomethylol urea, methylene diurea, dimethylene triurea, trimethylene tetraurea, isobutylidene diurea, crotonylidene diurea, and any combination thereof; and
wherein the solid particulate agent has a particle size ranging from about 0.1 microns to about 5,000 microns.
2. The servicing fluid of claim 1 , wherein the solid particulate agent is selected from the group consisting of monomethylol urea, methylene diurea, dimethylene triurea, trimethylene tetraurea, crotonylidene diurea, and any combination thereof.
3. The servicing fluid of claim 1 , further comprising from about 0.5 to about 50 percent by weight of the solid particulate agent.
4. The servicing fluid of claim 1 , wherein the solid particulate agent has a particle size ranging from about 3,000 microns to about 5,000 microns.
5. The servicing fluid of claim 1 , further comprising a proppant or sand.
6. The servicing fluid of claim 1 , wherein the servicing fluid is a member selected from the group consisting of a drilling fluid, a fluid loss pill, a lost circulation pill, a diverting fluid, a bridging fluid, a plugging fluid, an abrasive cutting fluid, a scouring fluid, a perforating fluid, a fracturing fluid, a gravel packing fluid, a acidizing fluid, a conformance fluid, and a completion fluid.
7. The servicing fluid of claim 1 , further comprising a member selected from the group consisting of a filler, a coating, a water soluble polymer, a weighting agent, a proppant, gravel, a viscosifying agent, a surfactant, an acid, an acid precursors, an enzyme, a chelating agent, a microbe, an oxidizer, a fluid loss agent, a pH buffer, a friction reducer, a biocide, and any combination thereof.