Integration of time-lapse gravity and production data to monitor gas reservoirs

Balza, Andrea; Li, Y.

doi:10.3997/2214-4609.201701788

Cited by 1 publication

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“…Several studies performed all over the world in the last two decades show the efficiency of the seafloor 4D gravity technique. These include feasibility studies, survey improvements, time-lapse gravity processing, application of inversion methods, use of borehole and gravity gradiometry information, and real data interpretation [7,[10][11][12]16,17,[19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of 4D Gravity Monitoring in Deep-Water Turbidites Reservoirs

et al. 2023

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We present a seafloor 4D gravity feasibility analysis for monitoring deep-water hydrocarbon reservoirs. To perform the study, we have simulated the gravity effect due to different density and pore pressure distributions derived from a realistic model of a turbiditic oil field in Campos Basin, offshore Brazil. These reservoirs are analogs of several other passive-margin turbiditic systems located around the world. We considered four reservoir scenarios including and not including seafloor subsidence. Our results indicate that the gravity responses are higher than the feasible value of 3 μGal 12 years following the base survey. The area of maximum gravity anomaly corresponds to where we suppose hydrocarbon extraction occurs. A maximum seafloor subsidence of 0.6 cm was estimated, resulting in no detectable gravity effects. Our results endorse the 4D seafloor gravity acquisition as a beneficial tool for monitoring deep-water passive-margin turbiditic reservoirs.

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