TY  - SER
AU  - Jia, Y.L.
AU  - Nie, R.S.
AU  - Meng, Y.F.
AU  - Wang, Y.H.
TI  - New Type Curves  for  Modeling Productivity of Horizontal Weli with  Negative Skin Factors
KW  - Curve Effect
KW  - Productivity
KW  - Horizontal
ER  -