TITLE:
Mathematical Statistics Method of Evaluating Application Effects of a New Type of Gas Anchor
AUTHORS:
Jun Wang, Wen-He Li, Rong Zhong
KEYWORDS:
A New Type of Gas Anchor, Confidence Interval, Sampling Error, Application Effects Evaluation
JOURNAL NAME:
Energy and Power Engineering,
Vol.7 No.7,
July
23,
2015
ABSTRACT: Based on the basic formula of the confidence interval and the sampling error of mathematical statistics,
the mathematical statistics method of evaluating application effects of a new type of gas
anchor was given in this paper. By the method mentioned above, the confidence interval and the
sampling errors of the relevant mean value differences of Daqing Oilfield S block’s 150 wells, according
to the mean value differences of the liquid producing capacity per day, the oil production
per day, the submergence depth of the 10 sampling test wells, in which before and after a new type
of gas anchor were laid down, were calculated. The calculation results show that a new type of gas
anchor has a better effect of increasing oil production of oil well and enhancing pump efficiency.
Through the real value differences analysis of the liquid producing capacity per day, the oil production
per day, the submergence depth of 150 wells mentioned above, in which before and after a
new type of gas anchor were laid down, it was verified. By using the confidence interval and the
sampling errors of the liquid producing capacity per day, the oil production per day, the submergence
depth mentioned above, in which before and after a new type of gas anchor were laid down,
the application effects of a new type of gas anchor could be evaluated. And a mathematical statistics
method of evaluation application effects of a new type of gas anchor is presented.