Food industry contributes to fracturing fluid formulation

Halliburton has introduced a hydraulic fracturing fluid formulation made with ingredients obtained from food suppliers. And no, the fluid is not considered edible.

Compounds used in fracing are under scrutiny as some members of Congress question its safety. The use of fracing in the US dates back to the 1940s. Currently, the development of shale plays and horizontal drilling has increased demand for frac services.

Halliburton said its CleanStim fluid system provides excellent pumpability, proppant transport, and retained conductivity. Laboratory tests showed over 90% retained conductivity after 24 hr of flow. The fluid can be applicable over a broad temperature range providing up to 30 minutes pumping time at 225° F.

CleanStim involves a gelling agent, crosslinker-buffer, breakers and a surfactant. Frac crews mix the CleanStim formulation with water at the job site.

Crews on conventional gelled frac jobs can use the CleanStim fluid. In addition, CleanStim components can provide friction reduction for water frac treatments commonly used in shale, Halliburton said.

Can nanosensors boost oil production?

Oil companies and service companies are helping finance a research consortium promoting nanotechnology. The consortium hopes that subsurface nanosensors can coax more oil and gas out of conventional reservoirs.

The Advanced Energy Consortium says it “seeks to build a vital and economical hydrocarbon bridge while renewable energy resources are being developed.” AEC seeks to use nanosensors to characterize reservoir rock formations.

The medical industry already uses nanotechnology—engineering on the level of atoms and molecules. Paul Ching, AEC executive director, said most major oil companies are researching nanotechnology.

AEC members include BP America Inc., Baker Hughes Inc., ConocoPhillips, Halliburton Energy Services Inc., Marathon Oil Corp., Occidental Oil & Gas Corp., Schlumberger Ltd., Royal Dutch Shell PLC, and Total SA. The Bureau of Economic Geology at the University of Texas manages AEC. Rice University is a collaborating technical partner.

Separate from AEC, ConocoPhillips announced a 3-year nanotechnology program with the University of Kansas to research and test new technologies for enhanced oil recovery.

Stephen Brand, ConocoPhillips senior vice-president of technology, said the inclusion of nanoparticles might yield more efficient, environmentally sensitive EOR technologies.