52 NOETLING : PETROLEUM IN BURMA. 



limited to the north by the Natsin-yo, and south by the Aungban-yo. 

 Eastern and western limits are less well defined, but it may be said 

 that the wells do not extend beyond the eastern village of Twingon, 

 while west they extend right up to the boundary line of the 

 " Reserve." The area thus occupied by the pit wells may be esti- 

 mated at about 200 acres. 



The total area reserved for the native well diggers covers 3io - o2 

 acres, but as in the case of Berne it may be fairly doubted whether 

 petroleum is found all over this area. The Twingon tract is at pre- 

 sent exploited by 519 productive wells, which produce by far the 

 larger share of the yield of the pit wells, the average being 7,900 

 barrels a month. It seems at present at the zenith of its production, 

 in fact, it looks as if it had already passed it. 



To sum up, the area of the Yenangyoung oil field is made up 

 by- 









Acres. 



I. 



The Berne tract . 





. 3H'2 



2. 



The Kodoung tract 



. 



. 108 



3- 



The Twingon . 



. 



. 200 



Total . 349/2 



say, 350 acres, or rather more than half a square mile. 



The land north of the Twingon tract and adjoining it has not 

 yet been thoroughly tested ; there are two drilled wells in Block 

 2N., one of which has yielded oil, the other not. Both are, however, 

 closely situated to the boundary of the Reserve. It would, there- 

 fore, be hazardous to say anything definite : but I think I am not far 

 from the mark if I estimate the length of the whole of the Yenang- 

 young oil tract not to exceed 2 miles, while its average breadth 

 amounts barely to more than ^ mile. 



(d) Physical Geography. 

 The country in the neighbourhood of Yenangyoung forms part 

 of the low plateau like land which extends between the hi«h ele- 

 vations of the Shan hills and the Arrakan Yoma. Near Yenan- 

 ( 98 ) 



