A Novel Stacking Heterogeneous Ensemble Model with Hybrid Wrapper-Based Feature Selection for Reservoir Productivity Predictions

Table 1

Parameters and abbreviations for the input and target variables.

Parameter type	Parameter	Abbreviation
Input variables	Effective thickness	ET
	Showing thickness	ST
	Leakage	Leakage
	Total hydrocarbon	TH
	Gamma ray	GR
	Compensated sonic	CS
	Compensated neutron	CN
	Compensated density	CD
	Deep lateral resistivity	DLR
	Short lateral resistivity	SLR
	The difference of depth lateral resistivity	DDLR
	The ratio of depth lateral resistivity	RDLR
	Porosity	Porosity
	Water saturation	WS
	Formation reserve coefficient	FRC
	Gas reserve coefficient	GRC
	Slickwater	SW
	Gelled acid	GA
	The volume of injected liquid	VIL
	Injection rates	IR
	Tubing pressure	TuP
	Stopped pump pressure	SPP
	Pressure decline speed	PDS
	Flow-back rate	FR
Target variables	The test production	TP