'74 



NOETLING : PETROLEUM IN BURMA. 



class for the Yenangyoung field as a whole and for the Twingon and 

 Berne tract separately : — 



Table showing the approximate age of the pit wells in the 

 Yenangyoung oil field. 





N 



UMBER OF WELLS. 



Age of well. 



Twingdn. 



Bemo. 



Total. 



Less than 5 years . . . . • 



118 



12 



130 



Less than 10 years ..... 



3° 



6 



36 



Less than 20 years ..... 



162 



31 



193 



Less than 35 years ..... 



16 



s 



21 



Less than So years ..... 



9 



3 



12 



More than 50 years ..... 



'43 



107 



250' 



According: to this table there were- 





Twingfin. 



Beme. 



Total. 



Remarks. 



At the end of 1890 



In 1SS8 .... 



478 

 360 



I64 

 152 



642 

 512 



Including wells 

 construction. 



under 



In 1880 .... 



33° 



146 



476 







In 1S70 .... 



1 68 



US 



283 







In 1855 .... 



152 



1 10 



262 







Previous to 1855 



■43 



107 



250 







It must of course be understood that these figures do not pretend 

 to express the correct number of wells in the year referred to, but 

 that they must only be taken approximately. Now the following 

 ( 220 ) 



