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To increxfse ;the f low-~ of " "sluggish weMs^ petroleum engineers recently devised α new process of fracturing

'_, the surrounding underground formations by hydraulic pressure.

It required a unique gelling agent: one that would { 1 ) quickly gel petroleum fractions (gasoline, kerosene, etc.) at outdoor temperatures with ordinary mixing equipment . . . ( 2 ) hold the gel for a few hours when pumped down the well under pressures extreme enough to crack rock and carry suspended sand deep into the fissures . . . ( 3 ) then allow the mixture to re-liquefy, leaving the sand to prop open the newly-made oil channels.

To meet all three tough requirements, Mallinckrodt laboratories developed an entirely new gelling agent. Result: higher oil production.

Whatever your products, you too may be able to cut costs, improve quality, increase output, if you utilize our 83 years* experience with more than 1500 fine chemicals.

What is your problem?

MALLINCKRODT CHEMICAL WHIMS Mallinckrodt St., St. Louis 7. Mo. · 72 Gold St.. New YorK. Ν. Υ.

CHICAGO · CINCINNATI · CLEVELAND · LOS ANGELES · MONTREAL· PHILADELPHIA · SAN FRANCISCO

Manufacturers of Medicinal, Photographic, Analytical and Industrial Fine Chemicals

V O L U M E 2 8, N O . 2 9 J U L Y 1 7 , 1 9 5 0 2449

REJUVENATED OIL WELLS Ί&>£_ ^G&^^&0Skz_

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