Drilling

Induced seismicity, casing deformation, fracture stimulation design and well planning all require an understanding of the in situ stress state. Stress models are typically built in 1D along well profiles where sufficient data is available. However, this only provides accurate i... Read More.

Introduction: In May 2017 Ophir Energy announced that the ultra-deep water Ayame-1X exploration well had reached its total depth of 5394m TVDss. The well targeted multiple Cretaceous turbidite channel and fan complexes which were encountered as prognosed. Furthermore, the well dr... Read More.

Introduction : The Mississippian Meramec STACK play is an emerging unconventional target in the Anadarko Basin in west central Oklahoma. Prolific production results have been seen through the play from multiple prospective target intervals. While there has been newfound success, ... Read More.

Seismic inversion products are routinely used for earth modeling and influence the drilling program. However, this process is not trivial as the deepest target intervals are at around 12,000ft and the drilling windows are very narrow, in the range of 20-40ft. We demonstrate that ... Read More.

The in situ stress and elastic rock properties are first order controls on fracture stimulation behavior and consequently production. Understanding these properties at offset locations can facilitate optimal well placement and completion design. To achieve this objective, a coup... Read More.

The unusual present-day crustal stress pattern of the Australian continent has been the subject of scientific debate for over 25 years. The orientation of maximum horizontal present-day stress (SHmax) in continental Australia is unlike all other major tectonic plates in that the ... Read More.

In May 2017, Ophir announced that the ultra-deep water, Ayame-1X exploration well had reached its total depth of 5394 m TVDss. The well targeted multiple Cretaceous turbidite channel and fan complexes, which were encountered as prognosed. Furthermore, the well cased the longest r... Read More.

In frontier basins such as the deepwater blocks offshore Myanmar, determining the subsurface pore pressures is inherently challenging. Typically, offset well data is rare or irrelevant and the primary dataset is limited to seismic interval velocities with some form of interpretat... Read More.

Seismic lacks low frequencies, so for an absolute seismic inversion (which allows us to be quantitative) a so-called Low Frequency Model (LFM) is required.  Starting from an empty LFM, we would of course like to post Sand Vp values where there is Sand, Shale Vp values whe... Read More.

De-risking via objective quantitative interpretation (QI) is an essential part of successful hydrocarbon exploration and appraisal. Given suitable subsurface scenarios QI using AVO inversion can be used to identify lithologies, indicate pore fluid fill and determine net rock volu... Read More.