Table T2. Measurements made by wireline tool strings.

Table T2. Measurements made by wireline tool strings.

Run

Tool string*

Typical
logging speed
(m/hr)

Tools^†

Measurement

Sample
interval
(cm)

Approximate
vertical resolution
(cm)

1 Triple combination (total length = ~36.05 m) 250-275 HNGS Spectral gamma ray 15 51

APS Porosity 5 and 15 43

HLDS Bulk density, PEF 15 38

DLL Resistivity 15 61

DIT-E Resistivity 15 76-200

TAP Temperature 1 per s NA

Tool acceleration 4 per s NA

Pressure 1 per s NA

2 Formation MicroScanner (FMS)/sonic combination (total length = ~33.4 m) 250-275 NGT Spectral gamma ray 15 46

GPIT Tool orientation 0.25 NA

LSS Sonic velocity 15 61

FMS Microresistivity 0.25 0.5

Run	Tool string*	Typical logging speed (m/hr)	Tools^†	Measurement	Sample interval (cm)	Approximate vertical resolution (cm)
1	Triple combination (total length = ~36.05 m)	250-275	HNGS	Spectral gamma ray	15	51
			APS	Porosity	5 and 15	43
			HLDS	Bulk density, PEF	15	38
			DLL	Resistivity	15	61
			DIT-E	Resistivity	15	76-200
			TAP	Temperature	1 per s	NA
				Tool acceleration	4 per s	NA
				Pressure	1 per s	NA
2	Formation MicroScanner (FMS)/sonic combination (total length = ~33.4 m)	250-275	NGT	Spectral gamma ray	15	46
			GPIT	Tool orientation	0.25	NA
			LSS	Sonic velocity	15	61
			FMS	Microresistivity	0.25	0.5

Notes: * = all tool and tool string names except the TAP tool are trademarks of Schlumberger. † = for additional information about tool physics and use consult ODP Logging Services at http://www.ldeo.columbia.edu/BRG/ODP. Tools: HNGS = hostile environment natural gamma ray sonde, APS = accelerator porosity sonde, HLDS = high-temperature lithodensity sonde, DLL = dual laterolog, DIT-E = dual induction tool, TAP = Lamont-Doherty temperature/acceleration/pressure tool, NGT = natural gamma spectrometry tool, GPIT = general purpose inclinometer tool, LSS = long-spaced sonic tool, FMS = Formation MicroScanner. PEF = photoelectric effect. NA = not applicable.