102 PROCEEDINGS OF THE PHILADELPHIA MEETING 



due either to filtration or to migration from more altered rocks lielow. In 

 cases of igneous rock metamorpliism the effects may be erratic, distillates in 

 small quantities being occluded in the magma, which also may contain inclu- 

 sions of the mother rock. The limitation of commercial oil pools to regions of 

 not too advanced alteration of the buried carbonaceous deposits bears unfa- 

 vorably on the "inorganic" theoi'y of the origin of petroleum. 



Presented 1)\' title in the alisence of the autlioi'. 



OIL POOLS OF SOUTHERN OKLAHOMA ANU NORTHERN TEXAS 



BY .JAMES H. GARDNER 



{Abstract) 



The Wheeler and Healdton oil pools In southern Oklahoma and the Petrolia 

 and Electra pools in northern Texas owe their origin to distinct folding of 

 strata within the influences of the Arlnickle and Wichita ^Mountains in south 

 ern Oklahoma. I'rominent structural features have been produced subsequent 

 to the deposition of the so-called Permian Red Beds which, near the uplifts, 

 lie unconformably on Pennsylvanian and lower beds. The main oil-bearing 

 sands lie in the Pennsylvanian with the exception of the Wheeler pool, which 

 bears oil from the basal member of the Red Beds. Structure contour maps of 

 the Wheeler and Healdton fields compare with Udden's map of the Petrolia 

 field and are typical of the main pools of northern Oklahoma and southern 

 Kansas. Underground stratigraphy from comparison of well logs shows per- 

 sistence of certain beds useful in the correlation of the oil sands in this newly 

 developed region which offers many possibilities of undeveloped production. 



Read in full from luamiscripi liy Arthur M. ]\Iiller in the absence of 

 the author. 



NATURAL GAS AT CLEVELAND, OHIO 

 BY FRA.XK R. V.\X HORN 



(Abstract) 



For many years gas has been found in the Upper Devonian Ohio shales at 

 depths of 600 to 800 feet. From 1905 to 1008 drilling M'as tried at depths of 

 2,600 to 2,800 feet in the region west of Cleveland, but with little success. 

 One well Is reported to have produced 250.000 cubic feet daily, but most of 

 them were left uncapped. Nothing more was done until about three years 

 ago, when several wells were drilled inside the city limits with considerable 

 success. Early in 1914 a boom developed, and now probably 600 wells have 

 been drilled or are partly finished. All reach about 2,700 feet to the Clinton 

 formation, which is never more than 14 feet thick. It Is very diflicult to ob- 

 tain any accurate records, but the reported volume ranges from 10 million 

 cubic feet in some to dry holes in others. Pressures range from 200 to 1,100 

 pounds per square inch. The writer knows of one well which came in March 

 with over four million cubic feet. In May it was producing but one million 

 cubic feet at a pressure of 350 pounds. Now it has dropped to 100,000 feet 



