'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. 



Beme. 



Total. 



Less than 5 years . • • » • 



Il8 



12 



130 



Less than 10 years ..... 



30 



6 



36 



Less than 20 years ..... 



162 



31 



193 



Less than 35 years ..... 



16 



5- 



21 



Less than 5° years ..... 



9 



3 



12 



More than 50 years ..... 



143 



107 



250 



According to this table there were — 





Twingdn. 



Beme. 



Total. 



Remarks. 



At the end of 1890 . . 

 In 1888 .... 

 In 1880 



In 1870 . . • 

 In 1855 . . . 

 Previous to 1855 



478 

 360 



330 

 168 



152 



143 



164 



152 

 I46 



"5 

 no 



107 



642 

 512 

 476 

 283 

 262 

 250 



Including wells under 

 construction. 



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 ) 



