Downhole Hydrophone (DHH1) Standard

The DHH-1 downhole hydrophone is designed to fit directly above an analogue ASR-1 downhole satellite.  In addition a gamma tool can also be used to provide depth correlation.  The upper coupling is a PEH type which makes it ideal for tractor or pipe conveyed logging operations.

Main Features –

• PEH upper Coupling
• ASR Lower Coupling
• Standard 7 Conductor wireline
• Built in Amplifier
• Direct connection to ASR-1 downhole geophone
• Gamma Compatible
• Optimised for both VSP and hydraulic fracture monitoring work

Downhole Hydrophone (DHH2) Slim

The DHH-2 downhole hydrophone is slim variant of DHH-1 designed to fit directly above an analogue GSR-1 downhole geophone.  In addition a gamma tool can also be used to provide depth correlation. The coupling is an inline GO-7 style which makes it ideal for tractor or pipe conveyed logging operations.

Main Features –

• GO-7 in line coupler
• ASR Lower Coupling
• Standard 7 Conductor wireline
• Built in Amplifier
• Direct connection to GSR-1 downhole geophone
• Gamma Compatible -Optimised for both VSP and hydraulic fracture monitoring work

 

Specifications	(All hydrophones)
Sensor:	HTI-02-DHPC
Sensitivity:	71V/bar
Downhole Gain:	20dB
Element:	8.9 V/Bar
Diameter:	3-3/8” (DHH-1)
	1-11/16” (DHH-2)
Length:	17“ (DHH-1)
	25” (DHH-2)
Surface converter:	24 Bit
Sample rate:	250us Max
Frequency response:	10-1600Hz
Temperature:	400˚F/ 205˚C
Pressure:	10,000psi
Control panel:	DCP-2
Recording System:	GSP-1