id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iogr-1196	Jiang, Shaolong; Zhang, Guoqiang; Yuan, Renguo; Li, Xin; Feng, Enlong	Data Mining: Caliper Prediction Based on Gamma Logging While Drilling: DOI: 10.14800/IOGR.1196	2022	12	.pdf	application/pdf	4263	167	47	The calculation Eq. 1 to 4 are as follows: ���43' = �1���45 + �2���44,………………………………………..………………………………….(1) ��43' = �1��45 + �2��44,……………………………………………….………………………………(2) �1 = �4345 �4445 = �43−�45 2+ �43−�45 2 �44−�45 2+ �44−�45 2,………………………………………………………………………(3) �2 = 1 − �1,………………………………………………………..…………………………………….(4) Where ��� is the caliper, in; �� is gamma, API; �1, �2 are interpolation coefficients, related to geographic location; � is distance between two wells (m); �, � are X and Y coordinates of wellhead, m. Using the interpolation calculation method, we can get the predicted gamma curve and predicted caliper curve of G43 well (expressed with ��43' and ���43' respectively). Figure 9—Scatter fitting relationship between the difference gamma and the measured caliper. 9 ����43 = 0.6872∆���43 + 13.513 (� = 0.5765),………………………….………………………….(5) ����41 = 0.6946∆���41 + 12.911 (� = 0.5635),………………………….…………………………..(6)	cache/iogr-1196.pdf	txt/iogr-1196.txt