WellStreamer 보어홀 하이드로폰 배열 WellStreamer Borehole hydrophone array
-HR 시추공 조사용
-빠르고 심플한 인필드 오퍼레이션
-고감도의 액셀레이션-프리 피에조 세라믹 센서
-작은 직경과 가벼운 무게
-탄성파 탐사 장비들과 호환성
Information
| Application | Borehole seismic surveys on land and in water areas using cross-hole seismic testing and tomography (CST), vertical seismic profiling (VSP), high-resolution VSP, low-frequency acoustic logging, seismic side scanning, etc. Engineering surveys for the construction of highly sensitive facilities Search for karsts, fractured and deconsolidated zones, and mining geophysics Mineral exploration Geotechnical monitoring of the soil foundation and determination of its load-bearing capacity, including in accordance with ASTM D4428 / D4428M standard Crosshole logging of concrete foundations, piles, retaining walls, diaphragm foundations, dams, etc. Soil stabilization control Control of the continuity and thickness of the ice wall during the mine shaft construction Cracks location in concrete hydroelectric dams Parallel seismic testing of pile or foundations |
|---|---|
| Number of channels | 4, 6, 12, 24, or 48 |
| Operating frequency | 10 - 10 000 Hz |
| Electric capacity of the piezoelectric element | 4 000 pF |
| Sensitivity of the piezoelectric element | 180 µV / Pa |
| Maximum working pressure | 60 atm |
| Destructive pressure | > 100 atm |
| Sensitivity to accelerations | acceleration-free |
| Change in sensitivity depending on the depth | no |
| Type of the preamplifier | low-noise asymmetrical |
| Gain of the preamplifier | |
| Power supply voltage | bipolar from ±11 to ±16 V |
| Current per channel | 10 mA |
| Output impedance of the preamplifier | 395 Ω |
| Maximum value of the output signal | ±3.8 V |
| Mean square voltage of the intrinsic electrical noise (output) in the working bandwidth does not exceed | 10 µV |
| Operating temperature range | -10 ÷ +70 °С |
| Storage temperature range | -40 ÷ +70 °С |
| Hydrophone module diameter | 42 mm |
| Length of the hydrophone module | 200 mm |
| Weight of the hydrophone module | 300 g |
| Inter-hydrophone distance on the array | on request, but ≥ 0.25 m |
| Cable shielding material | polyurethane |
| Longitudinal hermitization of the cable | yes |
| Shielding of the cable and hydrophone module | yes |
| Cable reinforcement | kevlar |
| Working load | 200 kg |
| Breaking load | > 400 kg |
| Cable diameter | 13 mm |
| Minimum bend radius of the cable | 120 mm |
| Minimum bend radius of the active section | 220 mm |
| Cable weight | 168 g/m |
| Weight of the 130-meter hydrophone array with a reel | 38 kg |
| Dimensions on a reel | 760×775×400 mm |
| Maximum length of the hydrophone array | 700 m |
| End connector | by agreement |
| 상품 구성 | Hydrophone array WellStreamer Battery with charger Holder for fixing the array on the wellhead |
